Category Archives: Breast cancer

Chrysin

Cancer:
Lung cancer, breast cancer, leukemia, gastric, colon

Action: Anti-inflammatory, induces apoptosis, inhibits HIF-1 α, immunomodulatory

Chrysin (5,7-dihydroxyflavone) is a natural and biologically active compound extracted from many plants (including Scutellaria baicalensis (Georgi), Passiflora caerulea (L.), Passiflora incarnate (L.))., honey, and propolis. It possesses potent anti-inflammatory, anti-oxidant properties, promotes cell death, and perturbs cell-cycle progression. Chrysin induced p38-MAPK activation, and using a specific p38-MAPK inhibitor, SB203580, attenuated chrysin-induced p21 (Waf1/Cip1) expression (Weng et al., 2005).

MDR; NSCLC

Chrysin is a major flavonoid in Scutellaria baicalensis, a widely used traditional Chinese and Japanese medicine. Novel links of pro-inflammatory signals, AKR1C1/1C2 expression and drug resistance in human non-small lung cancer have been demonstrated, and the protein kinase C pathway may play an important role in this process. It is thought that chrysin may act as a potential adjuvant therapy for drug-resistant non-small lung cancer, especially for those with AKR1C1/1C2 overexpression (Wang et al., 2007).

Gastric Cancer, Colon Cancer

Additionally, derivatives of chrysin have been shown to have strong activities against SGC-7901 human gastric cell line and HT-29 human colon cancer cell lines (Zheng et al., 2003).

Breast Cancer

While Chrysin is a potent breast cancer resistance protein inhibitor, it was found to have no significant effect on toptecan pharmacokinetics in rats (Zhang et al., 2005).

VEGF, HIF-1

Chrysin was found to inhibit hypoxia-inducible factor-1α (HIF-1α) expression through AKT signaling. Inhibition of HIF-1α by chrysin resulted in abrogation of vascular endothelial growth factor expression (Fu et al., 2007).

Leukemia

Chrysin has been shown to inhibit proliferation and induce apoptosis, and is more potent than other tested flavonoids in leukemia cells, where chrysin is likely to act via activation of caspases and inactivation of Akt signaling in the cells (Khoo et al., 2010).

Immune

The chemo-preventive action of chrysin has been found to specifically inhibit the enzymatic activity of IDO-1 but not mRNA expression in human neuronal stem cells (hNSC), confirmed by cell-based assay and qRT-PCR. These results suggest that attenuation of immune suppression via inhibition of IDO-1 enzyme activity may be one of the important mechanisms of polyphenols in chemoprevention or combinatorial cancer therapy (Chen et al., 2012).

References

Chen SS, Corteling R, Stevanato L, Sinden J. (2012). Polyphenols Inhibit Indoleamine 3,5-Dioxygenase-1 Enzymatic Activity — A Role of Immunomodulation in Chemoprevention. Discovery Medicine.


Fu B, Xue J, Li Z, et al. (2007). Chrysin inhibits expression of hypoxia-inducible factor-1 α through reducing hypoxia-inducible factor-1 α stability and inhibiting its protein synthesis. Mol Cancer Ther, 6:220. doi: 10.1158/1535-7163.MCT-06-0526


Khoo BY, Chua SL, Balaram P. (2010). Apoptotic Effects of Chrysin in Human Cancer Cell Lines. Int. J. Mol. Sci, 11(5), 2188-2199. doi:10.3390/ijms11052188


Wang HW, Lin CP, Chiu JH, et al. (2007). Reversal of inflammation-associated dihydrodiol dehydrogenases (AKR1C1 and AKR1C2) overexpression and drug resistance in nonsmall cell lung cancer cells by wogonin and chrysin. International Journal of Cancer, 120(9), 2019-2027.


Weng MS, Ho YS, Lin JK. (2005). Chrysin induces G1 phase cell-cycle arrest in C6 glioma cells through inducing p21Waf1/Cip1 expression: involvement of p38 mitogen-activated protein kinase. Biochem Pharmacol, 69(12):1815-27.


Zhang S, Wang X, Sagawa K, Morris ME. (2005). Flavonoids chrysin and benzoflavone, potent breast cancer resistance protein inhibitors, have no significant effect on topotecan pharmacokinetics in rats or mdr1a/1b (,äì/,äì) mice. Drug Metabolism and Disposition, 33(3), 341-348.


Zheng X, Meng WD, Xu YY, Cao JG, & Qing FL. (2003). Synthesis and anti-cancer effect of chrysin derivatives. Bioorganic & Medicinal Chemistry Letters, 13(5), 881-884.

Camptothecin

Cancer: Breast, colon

Action: Cytostatic

Breast Cancer

Recently, natural product DNA topoisomerase I inhibitors 10-hydroxycamptothecin (HCPT) and camptothecin (CPT) have been shown to have therapeutic effects in both in vitro and in vivo models of human breast cancer. After evaluation, the apoptotic pathways were characterized in vitro and in vivo in the human breast cancer cell lines MCF-7 and MDA-MB-468.

The elevation of p53 protein levels in MCF-7 cells treated with CPT was significantly inhibited by preincubation with DNA breaks inhibitor aphidicolin, while the elevation of p21WAF1/CIP1 protein levels was not inhibited. The elevation of p21WAF1/CIP1 in MDA-MB-468 cells treated with CPT was not inhibited by aphidicolin. Using Northern blot analysis, the transcription of p21WAF1/CIP1 was shown to increase in a dose-dependent manner in MCF-7 and MDA-MB-468 cells treated with HCPT or CPT.

Results suggest that treatment with HCPT and CPT results in increased levels of p21WAF1/CIP1 protein and mRNA, and that they induce apoptosis in human breast cancer cells through both p53-dependent and -independent pathways. Findings may be significant in further understanding the mechanisms of actions of camptothecins in the treatment of human cancers (Liu & Zhang, 1998).

Colon Cancer

10-Hydroxycamptothecin (10-HCPT), an indole alkaloid isolated from a Chinese tree, Camptotheca acuminate , inhibits the activity of topoisomerase I and has a broad spectrum of anti-cancer activity in vitro and in vivo. 10-HCPT significantly repressed the proliferation of Colo 205 cells at a relatively low concentration (5-20 nM). Flow cytometry analysis and Western blot and apoptosis assays demonstrated that low-dose 10-HCPT arrested Colo 205 cells in the G2 phase of the cell-cycle and triggered apoptosis through a caspase-3-dependent pathway. No acute toxicity was observed after an oral challenge of 10-HCPT in BALB/c-nude mice every 2 days.

Results suggest that a relatively low dose of 10-HCPT (p.o.) is able to inhibit the growth of colon cancer, facilitating the development of a new protocol of human trials with this anti-cancer drug (Ping et al., 2006).

References

Liu W, & Zhang R (1998). Up-regulation of p21WAF1/CIP1 in human breast cancer cell lines MCF-7 and MDA-MB-468 undergoing apoptosis induced by natural product anti-cancer drugs 10-hydroxycamptothecin and camptothecin through p53-dependent and independent pathways. International Journal of Oncology, 12(4), 793-804.


Ping YH, Lee HC, Lee JY, et al. (2006). Anti-cancer effects of low-dose 10-hydroxycamptothecin in human colon cancer. Oncology Reports, 15(5), 1273-9.

Campesterol

Cancer: Breast, prostate

Action: Anti-angiogenic, anti-oxidative

Anti-angiogenic

Campesterol, a plant sterol in nature, is known to have cholesterol-lowering and anti-carcinogenic effects. Since angiogenesis is essential for cancer, it was surmised that an anti-angiogenic effect may be involved in the anti-cancer action of this compound. This study investigated the effect of campesterol on basic fibroblast growth factor (bFGF)-induced angiogenesis in vitro in human umbilical vein endothelial cells (HUVECs) and an in vivo chorioallantoic membrane (CAM) model.

Campesterol, isolated from an ethylacetate fraction of Chrysanthemum coronarium (L.), showed a weak cytotoxicity in non-proliferating HUVECs. Within the non-cytotoxic concentration range, campesterol significantly inhibited the bFGF-induced proliferation and tube formation of HUVECs in a concentration-dependent manner, without affecting the motility of HUVECs. Furthermore, campesterol effectively disrupted the bFGF-induced neovascularization in chick chorioallantoic membranes (CAM) in vivo.

Taken together, these results support a potential anti-angiogenic action of campesterol via an inhibition of endothelial cell proliferation and capillary differentiation (Choi et al., 2007).

Metastatic Breast Cancer

Porphyra dentata, an edible red macroalgae, is used as a folk medicine in Asia. The in vitro and in vivo protective effects of a sterol fraction from P. dentata against breast cancer, linked to tumor-induced myeloid derived-suppressor cells (MDSCs), was investigated.

A sterol fraction containing cholesterol, β-sitosterol, and campesterol was prepared by solvent fractionation of methanol extract of P. dentata   in silica gel column chromatography. This sterol fraction in vitro significantly inhibited cell growth and induced apoptosis in 4T1 metastatic breast cancer cells. Intraperitoneal injection of this sterol fraction at 10 and 25  mg/kg body weight into 4T1 cell-implanted tumor BALB/c mice significantly inhibited the growth of tumor nodules and increased the survival rate of mice.

Two likely mechanisms for this effect can be suggested. First, the sample might cause the apoptosis of 4T1 cells. The other possible mechanism is that the sample may down-regulate the suppressive activity of MDSCs by affecting their ROS accumulation and arginase activity. This inhibition would be consistent with the use of Porphyra dentata as a folk medicine to treat inflammatory disorders and also for breast cancer (Kazlowska, Lin, Chang & Tsai, 2013).

Prostate Cancer

In the in vitro studies, both beta-sitosterol and campesterol inhibited the growth of human prostate cancer (PC-3) cells by 70% and 14%, respectively, while cholesterol supplementation increased the growth by 18% when compared with controls. Phytosterols (PS) mixture inhibited the invasion of PC-3 cells into Matrigel-coated membranes by 78% while cholesterol increased it by 43% as compared with the cells in the control media. PS supplementation reduced the binding of PC-3 cells to laminin by 15-38% and fibronectin by 23% while cholesterol increased binding to type IV collagen by 36%. It was concluded that PS indirectly (in vivo as a dietary supplement) and directly (in tissue culture media) inhibited the growth and metastasis of PC-3 cells (Awad et al., 2001).

References

Awad AB, Fink CS, Williams H, Kim U. (2001). In vitro and in vivo (SCID mice) effects of phytosterols on the growth and dissemination of human prostate cancer PC-3 cells. Eur J Cancer Prev, 10(6):507-13.


Choi JM, Lee EO, Lee HJ, et al. (2007). Identification of campesterol from chrysanthemum coronarium l. and its anti-angiogenic activities. Phytotherapy Research, 21(10), 954-959.


Kazlowska K, Lin HTV, Chang SH, Tsai GJ. (2013). In vitro and in vivo anti-cancer effects of sterol fraction from red algae porphyra. Evidence-Based Complementary and Alternative Medicine, 2013(2013), 493869. http://dx.doi.org/10.1155/2013/493869.

Caffeic acid phenethyl ester (CAPE)

Cancer:
Breast, prostate, leukemia, cervical., oral., melanoma

Action: EMT, anti-mitogenic, anti-carcinogenic, anti-inflammatory, immunomodulatory

Anti-mitogenic, Anti-carcinogenic, Anti-inflammatory, Immunomodulatory Properties

Caffeic acid phenethyl ester (CAPE), an active component of propolis from honeybee hives, is known to have anti-mitogenic, anti-carcinogenic, anti-inflammatory, and immunomodulatory properties. A variety of in vitro pharmacology for CAPE has been reported. A study using CAPE showed a positive effect on reducing carcinogenic incidence. It is known to have anti-mitogenic, anti-carcinogenic, anti-inflammatory, and immunomodulatory properties in vitro (Orban et al., 2000) Another study also showed that CAPE suppresses acute immune and inflammatory responses and holds promise for therapeutic uses to reduce inflammation (Huang et al., 1996).

Caffeic acid phenethyl ester (CAPE) specifically inhibits NF-κB at µM concentrations and shows ability to stop 5-lipoxygenase-catalyzed oxygenation of linoleic acid and arachidonic acid. Previous studies have demonstrated that CAPE exhibits anti-oxidant, anti-inflammatory, anti-proliferative, cytostatic, anti-viral., anti-bacterial., anti-fungal., and, most importantly, anti-neoplastic properties (Akyol et al., 2013).

Multiple Immunomodulatory and Anti-inflammatory Activities

The results show that the activation of NF-kappa B by tumor necrosis factor (TNF) is completely blocked by CAPE in a dose- and time-dependent manner. Besides TNF, CAPE also inhibited NF-kappa B activation induced by other inflammatory agents including phorbol ester, ceramide, hydrogen peroxide, and okadaic acid. Since the reducing agents reversed the inhibitory effect of CAPE, it suggests the role of critical sulfhydryl groups in NF-kappa B activation. CAPE prevented the translocation of the p65 subunit of NF-kappa B to the nucleus and had no significant effect on TNF-induced I kappa B alpha degradation, but did delay I kappa B alpha resynthesis. When various synthetic structural analogues of CAPE were examined, it was found that a bicyclic, rotationally constrained, 5,6-dihydroxy form was superactive, whereas 6,7-dihydroxy variant was least active.

Thus, overall our results demonstrate that CAPE is a potent and a specific inhibitor of NF-kappa B activation and this may provide the molecular basis for its multiple immunomodulatory and anti-inflammatory activities (Natarajan et al., 1996).

Breast Cancer

Aqueous extracts from Thymus serpyllum (ExTs), Thymus vulgaris (ExTv), Majorana hortensis (ExMh), and Mentha piperita (ExMp), and the phenolic compounds caffeic acid (CA), rosmarinic acid (RA), lithospermic acid (LA), luteolin-7-O-glucuronide (Lgr), luteolin-7-O-rutinoside (Lr), eriodictiol-7-O-rutinoside (Er), and arbutin (Ab), were tested on two human breast cancer cell lines: Adriamycin-resistant MCF-7/Adr and wild-type MCF-7/wt.

ExMh showed the highest cytotoxicity, especially against MCF-7/Adr, whereas ExMp was the least toxic; particularly against MCF-7/wt cells. RA and LA exhibited the strongest cytotoxicity against both MCF-7 cell lines, over 2-fold greater than CA and Lgr, around 3-fold greater than Er, and around 4- to 7-fold in comparison with Lr and Ab. Except for Lr and Ab, all other phytochemicals were more toxic against MCF-7/wt, and all extracts exhibited higher toxicity against MCF-7/Adr. It might be concluded that the tested phenolics exhibited more beneficial properties when they were applied in the form of extracts comprising their mixtures (Berdowska et al., 2013).

Prostate Cancer

Evidence is growing for the beneficial role of selective estrogen receptor modulators (SERM) in prostate diseases. Caffeic acid phenethyl ester (CAPE) is a promising component of propolis that possesses SERM activity. CAPE-induced inhibition of AKT phosphorylation was more prominent (1.7-folds higher) in cells expressing ER-α such as PC-3 compared to LNCaP. In conclusion, CAPE enhances the anti-proliferative and cytotoxic effects of DOC and PTX in prostate cancer cells (Tolba et al., 2013).

EMT, Prostate Cancer

CAPE suppressed the expression of Twist 2 and growth of PANC-1 xenografts without significant toxicity. CAPE could inhibit the orthotopic growth and EMT of pancreatic cancer PANC-1 cells accompanied by down-regulation of vimentin and Twist 2 expression (Chen et al., 2013).

CAPE is a well-known NF-κB inhibitor. CAPE has been used in folk medicine as a potent anti-inflammatory agent. Recent studies indicate that CAPE treatment suppresses tumor growth and Akt signaling in human prostate cancer cells (Lin et al., 2013). Combined treatments of CAPE with chemotherapeutic drugs exhibit synergistic suppression effects. Pharmacokinetic studies suggest that intraperitoneal injection of CAPE at concentration of 10mg/kg is not toxic. CAPE treatment sensitizes cancer cells to chemotherapy and radiation treatments. In addition, CAPE treatment protects therapy-associated toxicities (Liu et al., 2013).

Cervical Cancer

CAPE preferentially induced S- and G2 /M-phase cell-cycle arrests and initiated apoptosis in human cervical cancer lines. The effect was found to be associated with increased expression of E2F-1, as there is no CAPE-mediated induction of E2F-1 in the pre-cancerous cervical Z172 cells. CAPE also up-regulated the E2F-1 target genes cyclin A, cyclin E and apoptotic protease activating of factor 1 (Apaf-1) but down-regulated cyclin B and induced myeloid leukemia cell differentiation protein (Mcl-1) (Hsu et al., 2013).

Oral Cancer

CAPE attenuated SCC-9 oral cancer cells migration and invasion at noncytotoxic concentrations (0  µM to 40 µM). CAPE exerted its inhibitory effects on MMP-2 expression and activity by upregulating tissue inhibitor of metalloproteinase-2 (TIMP-2) and potently decreased migration by reducing focal adhesion kinase (FAK) phosphorylation and the activation of its downstream signaling molecules p38/MAPK and JNK (Peng et al., 2012).

Melanoma

CAPE is suggested to suppress reactive-oxygen species (ROS)-induced DNA strand breakage in human melanoma A2058 cells when compared to other potential protective agents. CAPE can be applied not only as a chemo-preventive agent but also as an anti-metastatic therapeutic agent in lung cancer and because CAPE is a nuclear factor-κB (NF-κB) inhibitor and 5α reductase inhibitor, it has potential for the treatment of prostate cancer (Ozturk et al., 2012).

References

Akyol S, Ozturk G, Ginis Z, et al. (2013). In vivo and in vitro antõneoplastic actions of caffeic acid phenethyl ester (CAPE): therapeutic perspectives. Nutr Cancer, 65(4):515-26. doi: 10.1080/01635581.2013.776693.


Berdowska I, Ziel iński B, Fecka I, et al. (2013). Cytotoxic impact of phenolics from Lamiaceae species on human breast cancer cells. Food Chem, 15;141(2):1313-21. doi: 10.1016/j.foodchem.2013.03.090.


Chen MJ, Shih SC, Wang HY, et al. (2013). Caffeic Acid phenethyl ester inhibits epithelial-mesenchymal transition of human pancreatic cancer cells. Evid Based Complement Alternat Med, 2013:270906. doi: 10.1155/2013/270906.


Hsu TH, Chu CC, Hung MW, et al. (2013). Caffeic acid phenethyl ester induces E2F-1-mediated growth inhibition and cell-cycle arrest in human cervical cancer cells. FEBS J, 280(11):2581-93. doi: 10.1111/febs.12242.


Huang MT, Ma W, Yen P, et al. (1996). Inhibitory effects of caffeic acid phenethyl ester (CAPE) on 12-O-tetradecanoylphorbol-13-acetate-induced tumor promotion in mouse skin and the synthesis of DNA, RNA and protein in HeLa cells. Carcinogenesis, 17(4):761–5. doi:10.1093/carcin/17.4.761.


Lin HP, Lin CY, Liu CC, et al. (2013). Caffeic Acid phenethyl ester as a potential treatment for advanced prostate cancer targeting akt signaling. Int J Mol Sci, 14(3):5264-83. doi: 10.3390/ijms14035264.


Liu CC, Hsu JM, Kuo LK, et al. (2013). Caffeic acid phenethyl ester as an adjuvant therapy for advanced prostate cancer. Med Hypotheses, 80(5):617-9. doi: 10.1016/j.mehy.2013.02.003.


Natarajan K, Singh S, Burke TR Jr, Grunberger D, Aggarwal BB. (1996). Caffeic acid phenethyl ester is a potent and specific inhibitor of activation of nuclear transcription factor NF-kappa B. Proc Natl Acad Sci USA, 93(17):9090-5.


Orban Z, Mitsiades N, Burke TR, Tsokos M, Chrousos GP. (2000). Caffeic acid phenethyl ester induces leukocyte apoptosis, modulates nuclear factor-kappa B and suppresses acute inflammation. Neuroimmunomodulation, 7(2): 99–105. doi:10.1159/000026427.


Ozturk G, Ginis Z, Akyol S, et al. (2012). The anti-cancer mechanism of caffeic acid phenethyl ester (CAPE): review of melanomas, lung and prostate cancers. Eur Rev Med Pharmacol Sci, 16(15):2064-8.


Peng CY, Yang HW, Chu YH, et al. (2012). Caffeic Acid phenethyl ester inhibits oral cancer cell metastasis by regulating matrix metalloproteinase-2 and the mitogen-activated protein kinase pathway. Evid Based Complement Alternat Med, 2012:732578. doi: 10.1155/2012/732578.


Tolba MF, Esmat A, Al-Abd AM, et al. (2013). Caffeic acid phenethyl ester synergistically enhances docetaxel and paclitaxel cytotoxicity in prostate cancer cells. IUBMB Life, 65(8):716-29. doi: 10.1002/iub.1188.

Blueberin

Cancer: Colon, prostate, cervical., breast

Action: Anti-inflammatory, blood sugar regulation

Blueberin is isolated from Vaccinium arctostaphylos (L.).

Colon Cancer

Research has shown that diets rich in phenolic compounds such as those associated with blueberries such as blueberin may be associated with lower risks of several chronic diseases including cancer.

To probe this effect, the bioactivities of various components of blueberries were investigated and their potential anti-proliferation and apoptosis induction effects were investigated using two colon cancer cell lines, HT-29 and Caco-2. Polyphenols in three blueberry cultivars, Briteblue, Tifblue, and Powderblue, were extracted and freeze-dried. The extracts were further separated into phenolic acids, tannins, flavonols, and anthocyanins using an HLB cartridge and LH20 column. The phenolic acid fraction showed relatively lower bioactivities with 50% inhibition at 1000 µg/mL. The greatest anti-proliferation effect among all four fractions was from the anthocyanin fractions. Both HT-29 and Caco-2 cell growth was significantly inhibited by >50% by the anthocyanin fractions at concentrations of 15−50 µg/mL. Anthocyanin fractions also resulted in 2−7 times increase in DNA fragmentation, indicating the induction of apoptosis. The effective dosage levels are close to the reported range of anthocyanin concentrations in rat plasma. These findings suggest that blueberry intake may reduce colon cancer risk (Yi, 2005).

Prostate Cancer; AR+, AR-

The role of polyphenol fractions from both wild and cultivated blueberry fruit was probed in the inhibitory effects on the proliferation of LNCaP, an androgen-sensitive prostate cancer cell line, and DU145, a more aggressive androgen insensitive prostate cancer cell line. When 20µg/ml of a wild blueberry polyphenol fraction was added to LNCaP media, growth was inhibited to 11% of control with an IC50 of 13.3µg/ml. Two similar polyphenol-rich fractions from cultivated blueberries at the same concentration inhibited LNCaP growth to 57% and 26% of control with an IC50 of 22.7 and 5.8µg/ml, respectively. Differences in cell growth inhibition of LNCaP and DU145 cell lines by blueberry fractions rich in polyphenols indicate that blueberry proanthocyanidins have an effect primarily on androgen-dependent growth of prostate cancer cells. Possible molecular mechanisms for growth inhibition are reviewed (Schmidt, 2006).

Prostate Cancer

The mechanism(s) by which three flavonoid-enriched fractions from lowbush blueberry (Vaccinium angustifolium) down-regulate matrix metalloproteinase (MMP) activity in DU145 human prostate cancer cells were investigated. Regulation of MMPs is crucial to regulate extracellular matrix (ECM) proteolysis which is important in metastasis. Findings indicate that blueberry flavonoids may use multiple mechanisms in down-regulating MMP activity in these cells (Matchett, 2005).

Cervical Cancer, Breast Cancer

Blueberin, extracted with hexane, 50% hexane/ethyl acetate, ethyl acetate, ethanol, and 70% acetone/water at ambient temperature was tested for in vitro anti-cancer activity on cervical and breast cancer cell lines. Ethanol extracts strongly inhibited CaSki and SiHa cervical cancer cell lines and MCF-7 and T47-D breast cancer cell lines. An unfractionated aqueous extract of raspberry and the ethanol extract of blueberry significantly inhibited mutagenesis by both direct-acting and metabolically activated carcinogens (Wedge et al., 2001).

Anti-inflammatory

The reduction of fasting glucose was correlated with the reduction of serum CRP in the Blueberin group whereas in the Placebo group CRP levels were not significantly reduced. Furthermore, the Blueberin also significantly reduced the levels of plasma enzymes ALT, AST and GGT, indicating that, in addition to anti-diabetes effects, the Blueberin also possess pharmacologically relevant anti-inflammatory properties (Abidov et al., 2006).

References

Abidov M, Ramazanov A, Jimenez Del Rio M, Chkhikvishvili I. (2006). Effect of Blueberin on fasting glucose, C-reactive protein and plasma aminotransferases, in female volunteers with diabetes type 2: double-blind, placebo controlled clinical study. Georgian Med News, (141):66-72.

Matchett MD, MacKinnon, L, Sweeney MI, Gottschall-Pass KT, Hurta, RAR. (2006). Inhibition of matrix metalloproteinase activity in DU145 human prostate cancer cells by flavonoids from lowbush blueberry (Vaccinium angustifolium): possible roles for protein kinase C and mitogen-activated protein-kinase-mediated events. The Journal of Nutritional Biochemistry. doi: 10.1016/j.jnutbio.2005.05.014.

Schmidt BM, Erdman Jr JW, Lila MA. (2006). Differential effects of blueberry proanthocyanidins on androgen sensitive and insensitive human prostate cancer cell lines. Cancer Letters, 231(2):240-246. doi: 10.1021/jf049238n.

Wedge DE, Meepagala KM, Magee JB, et al. (2001). Anti-carcinogenic Activity of Strawberry, Blueberry, and Raspberry Extracts to Breast and Cervical Cancer Cells. Journal of Medicinal Food, 4(1):49-51. doi: 10.1089/10966200152053703.

Yi W, Fischer J, Krewer G, Akoh C. (2005). Phenolic Compounds from Blueberries Can Inhibit Colon Cancer Cell Proliferation and Induce Apoptosis. J. Agric. Food Chem, 53(18):7320–7329. doi: 10.1021/jf051333o.

Bezielle

Cancer: Metastatic and ER-negative Breast

Action: Anti-cancer

Breast Cancer

Bezielle is an orally administered aqueous extract of Scutellaria barbata for treatment of advanced and metastatic breast cancer. Phase I trials showed promising tolerability and efficacy. In our study, we used a combined proteomic-metabolomic approach to investigate the molecular pathways affected by Bezielle in ER-positive BT474 and ER-negative SKBR3 cell lines. Bezielle's ability to induce oxidative stress was associated with the changes in expression of redox potential maintaining enzymes: glutathione- and thioredoxin-related proteins and peroxiredoxins. In regards to cell metabolism, decreased expression of α-enolase was associated with a reduction of de novo (13) C-lactate formation.

By inhibiting glucose metabolism, cells reacted by lowering the expression of glucose transporters and resulting in decreased intracellular glucose concentration. Decreased expression of fatty acid synthase and reduced concentration of phosphocholine indicated considerable changes in phospholipid metabolism. Ultimately, by inhibiting the major energy-producing pathways, Bezielle caused depletion of ATP and NAD(H). Both cell lines were responsive, thus suggesting that Bezielle has the potential to be effective against ER-negative breast cancers. In conclusion, Bezielle's cytotoxicity toward cancer cells is primarily based on inhibition of metabolic pathways that are preferentially activated in tumor cells thus explaining its specificity for cancer cells (Klawitter et al., 2011).

Anti-cancer

Chen et al. (2012) found that the cytotoxic activity of the Bezielle extract in vitro co-purified with a defined fraction containing multiple flavonoids. They isolated several of these Bezielle flavonoids, and examined their possible roles in the selective anti-tumor cytotoxicity of Bezielle. The results support the hypothesis that a major Scutellaria flavonoid, scutellarein, possesses many if not all of the biologically relevant properties of the total extract. Like Bezielle, scutellarein induced increasing levels of ROS of mitochondrial origin, progressive DNA damage, protein oxidation, depletion of reduced glutathione and ATP, and suppression of both OXPHOS and glycolysis.

Like Bezielle, scutellarein was selectively cytotoxic towards cancer cells.

Carthamidin, a flavonone found in Bezielle, also induced DNA damage and oxidative cell death. Two well known plant flavonoids, apigenin and luteolin, had limited and not selective cytotoxicity that did not depend on their pro-oxidant activities. We also provide evidence that the cytotoxicity of scutellarein was increased when other Bezielle flavonoids, not necessarily highly cytotoxic or selective on their own, were present. This indicates that the activity of total Bezielle extract might depend on a combination of several different compounds present within it (Chen et al., 2012).

References

Chen V, Staub RE, Baggett S, et al. (2012). Identification and analysis of the active phytochemicals from the anti-cancer botanical extract Bezielle. PLoS One, 7(1):e30107. doi: 10.1371/journal.pone.0030107.


Klawitter J, Klawitter J, Gurshtein J, et al. (2011). Bezielle (BZL101)-induced oxidative stress damage followed by redistribution of metabolic fluxes in breast cancer cells: a combined proteomic and metabolomic study. Int J Cancer. 129(12):2945-57. doi: 10.1002/ijc.25965.

Berberine

Cancer:
Liver,leukemia, breast, prostate, epidermoid (squamous-cell carcinoma), cervical.,testicular, melanoma, lymphoma, hepatoma

Action: Radio-sensitizer, anti-inflammatory, cell-cycle arrest, angiogenesis, chemo-enhancing, anti-metastatic, anti-oxidative

Berberine is a major phytochemical component of the roots and bark of herbal plants such as Berberis, Hydrastis canadensis and Coptis chinensis. It has been implicated in the cytotoxic effects on multiple cancer cell lines.

Anti-inflammatory

Berberine is an isoquinoline alkaloid widely distributed in natural herbs, including Rhizoma Coptidis chinensis and Epimedium sagittatum (Sieb. et Zucc.), a widely prescribed Chinese herb (Chen et al., 2008). It has a broad range of bioactivities, such as anti-inflammatory, anti-bacterial., anti-diabetes, anti-ulcer, sedation, protection of myocardial ischemia-reperfusion injury, expansion of blood vessels, inhibition of platelet aggregation, hepato-protective, and neuroprotective effects (Lau et al., 2001; Yu et al., 2005; Kulkarni & Dhir, 2010; Han et al., 2011; Ji, 2011). Berberine has been used in the treatment of diarrhea, neurasthenia, arrhythmia, diabetes, and so forth (Ji, 2011).

Angiogenesis, Chemo-enhancing

Inhibition of tumor invasion and metastasis is an important aspect of berberine's anti-cancer activities (Tang et al., 2009; Ho et al., 2009). A few studies have reported berberine's inhibition of tumor angiogenesis (Jie et al., 2011; Hamsa & Kuttan, 2012). In addition, its combination with chemotherapeutic drugs or irradiation could enhance the therapeutic effects (Youn et al., 2008; Hur et al., 2009).

Cell-cycle Arrest

The potential molecular targets and mechanisms of berberine are rather complicated. Berberine interacts with DNA or RNA to form a berberine-DNA or a berberine-RNA complex, respectively (Islam & Kumar. 2009; Li et al., 2012). Berberine is also identified as an inhibitor of several enzymes, such as N-acetyltransferase (NAT), cyclooxygenase-2 (COX-2), and telomerase (Sun et al., 2009).

Other mechanisms of berberine are mainly related to its effect on cell-cycle arrest and apoptosis, including regulation of cyclin-dependent kinase (CDK) family of proteins (Sun et al., 2009; Mantena, Sharma, & Katiyar, 2006) and expression regulation of B-cell lymphoma 2 (Bcl-2) family of proteins (such as Bax, Bcl-2, and Bcl-xL) (Sun et al., 2009), and caspases (Eom et al., 2010; Mantena, Sharma, & Katiyar, 2006). Furthermore, berberine inhibits the activation of the nuclear factor κ-light-chain-enhancer of activated B cells (NF-κB) and induces the formation of intracellular reactive oxygen species (ROS) in cancer cells (Sun et al., 2009; Eom et al., 2010). Interestingly, these effects might be specific for cancer cells (Sun et al., 2009).

Several studies have shown that berberine has anti-cancer potential by interfering with the multiple aspects of tumorigenesis and tumor progression in both in vitro and in vivo experiments. These observations have been well summarized in recent reports (Sun et al., 2009; Tan et al., 2011). Berberine inhibits the proliferation of multiple cancer cell lines by inducing cell-cycle arrest at the G1 or G 2 / M phases and by apoptosis (Sun et al., 2009; Eom et al., 2010; Burgeiro et al., 2011). In addition, berberine induces endoplasmic reticulum stress (Chang et al., 1990; Eom et al., 2010) and autophagy (Wang et al., 2010) in cancer cells.

However, compared with clinically prescribed anti-cancer drugs, the cytotoxic potency of berberine is much lower, with an IC50 generally at 10 µM to 100 µM depending on the cell type and treatment duration in vitro (Sun et al., 2009). Besides, berberine also induces morphologic differentiation in human teratocarcinoma (testes) cells (Chang et al., 1990).

Anti-metastatic

The effect of berberine on invasion, migration, metastasis, and angiogenesis is mediated through the inhibition of focal adhesion kinase (FAK), NF-κB, urokinase-type plasminogen-activator (u-PA), matrix metalloproteinase 2 (MMP-2), and matrix metalloproteinase 9 (MMP-9) (Ho et al., 2009; Hamsa & Kuttan. (2011); reduction of Rho kinase-mediated Ezrin phosphorylation (Tang et al., 2009); reduction of the expression of COX-2, prostaglandin E, and prostaglandin E receptors (Singh et al., 2011); down-regulation of hypoxia-inducible factor 1 (HIF-1), vascular endothelial growth factor (VEGF), pro-inflammatory mediators (Jie et al., 2011; Hamsa & Kuttan, 2012).

Hepatoma, Leukaemia

The cytotoxic effects of Coptis chinensis extracts and their major constituents on hepatoma and leukaemia cells in vitro have been investigated. Four human liver cancer cell lines, namely HepG2, Hep3B, SK-Hep1 and PLC/PRF/5, and four leukaemia cell lines, namely K562, U937, P3H1 and Raji, were investigated. C. chinensis exhibited strong activity against SK-Hep1 (IC50 = 7 microg/mL) and Raji (IC50 = 4 microg/mL) cell lines. Interestingly, the two major compounds of C. chinensis, berberine and coptisine, showed a strong inhibition on the proliferation of both hepatoma and leukaemia cell lines. These results suggest that the C. chinensis extract and its major constituents berberine and coptisine possess active anti-hepatoma and anti-leukaemia activities (Lin, 2004).

Leukemia

The steady-state level of nucleophosmin/B23 mRNA decreased during berberine-induced (25 g/ml, 24 to 96 hours) apoptosis of human leukemia HL-60 cells. A decline in telomerase activity was also observed in HL-60 cells treated with berberine. A stable clone of nucleophosmin/B23 over-expressed in HL-60 cells was selected and found to be less responsive to berberine-induced apoptosis. About 35% to 63% of control vector–transfected cells (pCR3) exhibited morphological characteristics of apoptosis, while about 8% to 45% of nucleophosmin/B23-over-expressed cells (pCR3-B23) became apoptotic after incubation with 15 g/ml berberine for 48 to 96 hours.

These results indicate that berberine-induced apoptosis is associated with the down-regulation of nucleophosmin/B23 and telomerase activity. Nucleophosmin/B23 may play an important role in the control of the cellular response to apoptosis induction (Hsing, 1999).

Prostate Cancer

In vitro treatment of androgen-insensitive (DU145 and PC-3) and androgen-sensitive (LNCaP) prostate cancer cells with berberine inhibited cell proliferation and induced cell death in a dose-dependent (10-100 micromol/L) and time-dependent (24–72 hours) manner. Berberine significantly (P < 0.05-0.001) enhanced apoptosis of DU145 and LNCaP cells with induction of a higher ratio of Bax/Bcl-2 proteins, disruption of mitochondrial membrane potential., and activation of caspase-9, caspase-3, and poly(ADP-ribose) polymerase.

The effectiveness of berberine in checking the growth of androgen-insensitive, as well as androgen-sensitive, prostate cancer cells without affecting the growth of normal prostate epithelial cells indicates that it may be a promising candidate for prostate cancer therapy (Mantena, 2006).

In another study, the treatment of human prostate cancer cells (PC-3) with berberine-induced dose-dependent apoptosis; however, this effect of berberine was not seen in non-neoplastic human prostate epithelial cells (PWR-1E). Berberine-induced apoptosis was associated with the disruption of the mitochondrial membrane potential., release of apoptogenic molecules (cytochrome c and Smac/DIABLO) from mitochondria and cleavage of caspase-9,-3 and PARP proteins.

Berberine-induced apoptosis was blocked in the presence of the anti-oxidant, N-acetylcysteine, through the prevention of disruption of mitochondrial membrane potential and subsequently release of cytochrome c and Smac/DIABLO. Taken together, these results suggest that the berberine-mediated cell death of human prostate cancer cells is regulated by reactive oxygen species, and therefore suggests that berberine may be considered for further studies as a promising therapeutic candidate for prostate cancer (Meeran, 2008).

Breast Cancer

DNA microarray technology has been used to understand the molecular mechanism underlying the anti-cancer effect of berberine carcinogenesis in two human breast cancer cell lines, the ER-positive MCF-7 and ER-negative MDA-MB-231 cells; specifically, whether it affects the expression of cancer-related genes. Treatment of the cancer cells with berberine markedly inhibited their proliferation in a dose- and time-dependent manner. The growth-inhibitory effect was much more profound in MCF-7 cell line than that in MDA-MB-231 cells.

IFN-β is among the most important anti-cancer cytokines, and the up-regulation of this gene by berberine is, at least in part, responsible for its anti-proliferative effect. The results of this study implicate berberine as a promising extract for chemoprevention and chemotherapy of certain cancers (Kang, 2005).

Breast Cancer Metastasis

Berberine also inhibits the growth of Anoikis-resistant MCF-7 and MDA-MB-231 breast cancer cell lines by inducing cell-cycle arrest. Anoikis, or detachment-induced apoptosis, may prevent cancer progression and metastasis by blocking signals necessary for survival of localized cancer cells. Resistance to anoikis is regarded as a prerequisite for metastasis; however, little is known about the role of berberine in anoikis-resistance.

The anoikis-resistant cells have a reduced growth rate and are more invasive than their respective adherent cell lines. The effect of berberine on growth was compared to that of doxorubicine, which is a drug commonly used to treat breast cancer, in both the adherent and anoikis-resistant cell lines. Berberine promoted the growth inhibition of anoikis-resistant cells to a greater extent than doxorubicine treatment. Treatment with berberine-induced cell-cycle arrest at G0/G1 in the anoikis-resistant MCF-7 and MDA-MB-231 cells was compared to untreated control cells. These results reveal that berberine can efficiently inhibit growth by inducing cell-cycle arrest in anoikis-resistant MCF-7 and MDA-MB-231 cells. Further analysis of these phenotypes is essential for understanding the effect of berberine on anoikis-resistant breast cancer cells, which would be relevant for the therapeutic targeting of breast cancer metastasis (Kim, 2010).

Melanoma

Berberine inhibits melanoma cancer cell migration by reducing the expressions of cyclooxygenase-2, prostaglandin E2 and prostaglandin E2 receptors. The effects and associated molecular mechanism of berberine on human melanoma cancer cell migration using melanoma cell lines A375 and Hs294 were probed in an in vitro cell migration assay, indicating that over- expression of cyclo-oxygenase (COX)-2, its metabolite prostaglandin E2 (PGE2) and PGE2 receptors promote the migration of cells.

Moreover, berberine inhibited the activation of nuclear factor-kappa B (NF-kB), an up- stream regulator of COX-2, in A375 cells, and treatment of cells with caffeic acid phenethyl ester, an inhibitor of NF-kB, inhibited cell migration. Together, these results indicate that berberine inhibits melanoma cell migration, an essential step in invasion and metastasis, by inhibition of COX-2, PGE2 and PGE2 receptors (Sing, 2011).

Cell-cycle Arrest, Squamous-cell Carcinoma

The in vitro treatment of human epidermoid carcinoma A431 cells with berberine decreases cell viability and induces cell death in a dose (5-75 microM)- and time (12–72 hours)-dependent manner, which was associated with an increase in G(1) arrest. G(0)/G(1) phase of the cell-cycle is known to be controlled by cyclin dependent kinases (Cdk), cyclin kinase inhibitors (Cdki) and cyclins.

Pre-treatment of A431 cells with the pan-caspase inhibitor (z-VAD-fmk) significantly blocked the berberine-induced apoptosis in A431 cells confirmed that berberine-induced apoptosis is mediated through activation of caspase 3-dependent pathway.

Together, these results indicate berberine as a chemotherapeutic agent against human epidermoid carcinoma A431 (squamous-cell) cells in vitro; further in vivo studies are required to determine whether berberine could be an effective chemotherapeutic agent for the management of non-melanoma skin cancers (Mantena, 2006).

Cervical Cancer, Radio-sensitizer

Cervical cancer remains one of the major killers amongst women worldwide. In India, a cisplatin based chemo/radiotherapy regimen is used for the treatment of advanced cervical cancer. Evidence shows that most of the chemotherapeutic drugs used in current clinical practice are radio-sensitizers. Natural products open a new avenue for treatment of cancer, as they are generally tolerated at high doses. Animal studies have confirmed the anti-tumorigenic activity of natural products, such as curcumin and berberine.

Berberine is a natural chemo-preventive agent, extracted from Berberis aristata, which has been shown to suppress and retard carcinogenesis by inhibiting inflammation.

The combined therapy of cisplatin/berberine and radiotherapy produced up-regulation of pro-apoptotic proteins Bax and p73, while causing down regulation of the anti-apoptotic proteins Bcl-xL, COX-2, cyclin D1. This additionally was accompanied by increased activity of caspase-9 and caspase-3, and reduction in telomerase activity. Results demonstrated that the treatment combination of berberine/cisplatin had increased induction of apoptosis relative to cisplatin alone (Komal., Singh, & Deshwal., 2013).

Anti-oxidative; Breast, Liver and Colon Cancer

The effect of B. vulgaris extract and berberine chloride on cellular thiobarbituric acid reactive species (TBARS) formation (lipid peroxidation), diphenyle–alpha-picrylhydrazyl (DPPH) oxidation, cellular nitric oxide (NO) radical scavenging capability, superoxide dismutase (SOD), glutathione peroxidase (GPx), acetylcholinesterase (AChE) and alpha-gulcosidase activities were spectrophotometrically determined.

Barberry crude extract contains 0.6 mg berberine/mg crude extract. Barberry extract showed potent anti-oxidative capacity through decreasing TBARS, NO and the oxidation of DPPH that is associated with GPx and SOD hyperactivation. Both berberine chloride and barberry ethanolic extract were shown to have inhibitory effect on the growth of breast, liver and colon cancer cell lines (MCF7, HepG2 and CACO-2, respectively) at different incubation times starting from 24 hours up to 72 hours and the inhibitory effect increased with time in a dose-dependent manner.

This work demonstrates the potential of the barberry crude extract and its active alkaloid, berberine, for suppressing lipid peroxidation, suggesting a promising use in the treatment of hepatic oxidative stress, Alzheimer and idiopathic male factor infertility. As well, berberis vulgaris ethanolic extract is a safe non-toxic extract as it does not inhibit the growth of PBMC that can induce cancer cell death (Abeer et al., 2013).

Source:

Alkaloids Isolated from Natural Herbs as the Anti-cancer Agents. Evidence-Based Complementary and Alternative Medicine. Volume 2012 (2012) http://dx.doi.org/10.1155/2012/485042

References

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Hamsa TP & Kuttan G. (2011). Berberine inhibits pulmonary metastasis through down-regulation of MMP in metastatic B16F-10 melanoma cells. Phytotherapy Research, 26(4):568–578.


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Kim JB, Yu JH, Ko E, et al. (2010). The alkaloid Berberine inhibits the growth of Anoikis-resistant MCF-7 and MDA-MB-231 breast cancer cell lines by inducing cell-cycle arrest. Phytomedicine, 17(6):436-40. doi: 10.1016/j.phymed.2009.08.012.


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Singh T, Vaid M, Katiyar N, et al. (2011). Berberine, an isoquinoline alkaloid, inhibits melanoma cancer cell migration by reducing the expressions of cyclooxygenase-2, prostaglandin E and prostaglandin E receptors. Carcinogenesis, 32(1):86–92.


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Berbamine

Cancer: Breast, leukemia, liver, neutropenia

Action: Anti-metastatic, chemo-sensitizer

Breast Cancer, Leukemia

Berbamine (BER), isolated from the Chinese herb Berberis amurensis and Berberis vulgaris (L.), selectively induces apoptosis in certain breast cancer and leukemia cell lines.

Studies have shown that berbamine suppresses the growth, migration and invasion in highly-metastatic human breast cancer cells by possibly inhibiting Akt and NF-kappaB signaling with their upstream target c-Met and downstream targets Bcl-2/Bax, osteopontin, VEGF, MMP-9 and MMP-2.

BER has synergistic effects with anti-cancer agents trichostatin A, celecoxib and carmofur on inhibiting the growth of MDA-MB-231 cells and reducing the ratio of Bcl-2/Bax and/or VEGF expressions in the cancer cells. These findings suggest that berbamine may have wide therapeutic and/or adjuvant therapeutic application in the treatment of human breast cancer and other cancers (Wang, 2009).

MDR, Leukemia stem cells

Previous studies have shown that berbamine selectively induces apoptosis of imatinib (IM)-resistant-Bcr/Abl-expressing leukemia cells from the K562 cell line and CML patients. Berbamine derivatives obtained by synthesis were found to have very high activity in vitro. Six of these exhibited consistent high anti-tumor activity for imatinib-resistant K562 leukemia cells. Their IC(50) values at 48h were 0.36-0.55 microM, whereas berbamine IC(50) value was 8.9 microM. Cell cycle analysis results showed that compound 3h could reduce G0/G1 cells. In particular, these compounds displayed potent inhibition of the cytoplasm-to-nucleus translocation of NF-kappaB p65 which plays a critical role in the survival of leukemia stem cells (Xie, 2009).

Liver Cancer, Leukemia

Meng et al. (2013) reported that berbamine and one of its derivatives, bbd24, potently suppressed liver cancer cell proliferation and induced cancer cell death by targeting Ca2+/calmodulin-dependent protein kinase II (CAMKII). Furthermore, berbamine inhibited the in vivo tumorigenicity of liver cancer cells in NOD/SCID mice and downregulated the self-renewal abilities of liver cancer-initiating cells. Berbamine inhibits proliferation and induces apoptosis of KU812 leukaemia cells by increasing Smad3 activity (Kapoor, 2012).

Chronic Myeloid Leukemia, Leukopenia

During imatinib therapy, many patients with chronic myeloid leukemia (CML) develop severe neutropenia, leading to treatment interruptions, and potentially compromising response to imatinib. Berbamine (a bisbenzylisoquinoline alkaloid) has been widely used in Asian countries for managing leukopenia associated with chemotherapy. With berbamine support, the time to achieve complete cytogenetic response was significantly shorter (median, 6.5 vs. 10 months, p = 0.007). There were no severe adverse events associated with berbamine treatment. In conclusion, the present study reveals the potential clinical value of berbamine in the treatment of CML with imatinib-induced neutropenia (Zhao et al., 2011).

References

Kapoor S. (2012). Emerging role of berbamine as an anti-cancer agent in systemic malignancies besides chronic myeloid leukemia. Zhejiang Univ Sci B, 13(9):761-2.


Meng Z, Li T, Ma X, et al. (2013). Berbamine Inhibits the Growth of Liver Cancer Cells and Cancer-Initiating Cells by Targeting Ca2+/Calmodulin-Dependent Protein Kinase II. Mol Cancer Ther.


Wang S, Liu Q, Zhang Y, et al. (2009). Suppression of growth, migration and invasion of highly-metastatic human breast cancer cells by berbamine and its molecular mechanisms of action. Mol Cancer, 8:81.


Xie J, Ma T, Gu Y, et al. (2009). Berbamine derivatives: A novel class of compounds for anti-leukemia activity. Eur J Med Chem, 44(8):3293-8. doi: 10.1016/j.ejmech.2009.02.018


Zhao Y, Tan Y, Wu G, et al. (2011). Berbamine overcomes imatinib-induced neutropenia and permits cytogenetic responses in Chinese patients with chronic-phase chronic myeloid leukemia. Int J Hematol, 94(2):156-62. doi: 10.1007/s12185-011-0887-7.

Artemisinin

Cancer: Breast, leukemia, gastric

Action: Anti-cancer

Artemisinin is isolated from Artemisia annua (L.).

Anti-cancer

Artemisinin and related compounds (artemisinins) is a frontline treatment for malaria. According to experimental evidence from more than 400 literature studies, 558 key proteins were derived and the artemisinins-rewired protein interaction network was constructed. Topological properties were analyzed to show that the protein network was a scale-free biological system. Five key pathways including PI3K-Akt, T cell receptor, Toll-like receptor, TGF-beta and insulin signaling pathways were involved in artemisinins-mediated anti-cancer effects (Huang et al., 2013).

Breast Cancer

Artemisinin has previously been shown to have selective toxicity towards cancer cells in vitro. The potential of artemisinin to prevent breast cancer development has been investigated in rats treated with a single oral dose (50 mg/kg) of 7,12-dimethylbenz[a]anthracene (DMBA), known to induce multiple breast tumors. Starting from the day immediately after DMBA treatment, one group of rats was provided with a powdered rat-chow containing 0.02% artemisinin, whereas a control group was provided with plain powdered food. For 40 weeks, both groups of rats were monitored for breast tumors.

Oral artemisinin significantly delayed (P<.002) and in some animals prevented (57% of artemisinin-fed versus 96% of the controls developed tumors, P<.01) breast cancer development in the monitoring period. In addition, breast tumors in artemisinin-fed rats were significantly fewer (P<.002) and smaller in size (P<.05) when compared with controls. Since artemisinin is a relatively safe compound that causes no known side-effects even at high oral doses, the present data indicate that artemisinin may be a potent chemoprevention agent (Lai, 2006).

Leukemia

Artemisinin is also a well-known anti-leukemic agent. The effect of artemisinin on cellular differentiation in the human promyelocytic leukemia HL-60 cell culture system has been investigated. Artemisinin markedly increased the degree of HL-60 leukemia cell differentiation when simultaneously combined with low doses of 1α,25-dihydoxyvitamin D3 [1,25-(OH)2D3] or all-trans retinoic acid (all-trans RA).

Extracellular-regulated kinase (ERK) inhibitors markedly inhibited HL-60 cell differentiation induced by artemisinin in combination with 1,25-(OH)2D3 or all-trans RA, whereas phosphatidylinositol 3-kinase (PI3-K) inhibitors did not. Particularly, protein kinase C (PKC) inhibitors inhibited HL-60 cell differentiation induced by artemisinin in combination with 1,25-(OH)2D3 but not with all-trans RA. Artemisinin enhanced PKC activity and protein level of PKCβI isoform in only 1,25-(OH)2D3-treated HL-60 cells.

Taken together, these results indicate that artemisinin strongly enhances the action of low doses of 1α,25-dihydoxyvitamin D3 [1,25-(OH)2D3] and all-trans retinoic acid in leukemia cell differentiation (Kim, 2003).

Gastric Cancer

Zhang et al. (2013) found that artemisinin inhibited growth and modulated expression of cell-cycle regulators in gastric cancer cells (AGS and MKN74 cells). Treatment with artemisinin was also associated with induction of p27kip1 and p21kip1, two negative cell-cycle regulators. Furthermore, we revealed that artemisinin treatment led to an increased expression of p53.

The side-effects from the artemisinin class of medications are similar to the symptoms of malaria: nausea, vomiting, anorexia, and dizziness. Mild blood abnormalities have also been noted. A rare but serious adverse effect is allergic reaction (Leonardi et al., 2001).

References

Huang C, Ba Q, Yue Q, et al. (2013). Artemisinin rewires the protein interaction network in cancer cells: network analysis, pathway identification, and target prediction. Mol Biosyst. Kim SH, Kim HJ, Kim TS. (2003). Differential involvement of protein kinase C in human promyelocytic leukemia cell differentiation enhanced by artemisinin. European Journal of Pharmacology, 482(1–3):67–76. doi:10.1016/j.ejphar.2003.09.057.


Lai H, Singh NP. (2006). Oral artemisinin prevents and delays the development of 7, 12-dimethylbenz [a] anthracene (DMBA)-induced breast cancer in the rat. Cancer Letters, 231(1):43–48. doi: 10.1016/j.canlet.2005.01.019.


Leonardi E, Gilvary G, White NJ, Nosten F. (2001). Severe allergic reactions to oral artesunate: a report of two cases'. Trans. R. Soc. Trop. Med. Hyg, 95(2):182–3. doi:10.1016/S0035-9203(01)90157-9.


Sun H, Meng X, Han J, et al. (2013) Anti-cancer activity of DHA on gastric cancer-an in vitro and in vivo study. Tumor Biol.


Zhang HT, Wang YL, Zhang J, Zhang QX. (2013). Artemisinin inhibits gastric cancer cell proliferation through up-regulation of p53. Tumor Biol.

Antrodia camphorata

 

Cancer: Leukemia, colorectal., ER+ ovarian cancer

Action: Anti-cancer

Antrodia Camphorata [(M. Zang & C.H. Su) Sheng H. Wu, Ryvarden & T.T.] is a native Taiwanese mushroom which is used in Asian folk medicine. It is also known as Ganoderma camphoratum (M. Zang & C.H. Su) and Taiwanofungus camphoratus [(M. Zang & C.H. Su) Sheng H. Wu, Z.H. Yu, Y.C. Dai & C.H. Su].

Anti-tumor

Mycotherapy is defined as the study of the use of extracts and compounds obtained from mushrooms as medicines or health-promoting agents. An increasing number of studies in the past few years have revealed mushroom extracts as potent anti-tumor agents. Also, numerous studies have been conducted on bioactive compounds isolated from mushrooms reporting the heteropolysaccharides, β-glucans, α-glucans, proteins, complexes of polysaccharides with proteins, fatty acids, nucleoside antagonists, terpenoids, sesquiterpenes, lanostanoids, sterols and phenolic acids, as promising anti-tumor agents (Popović et al., 2013).

Leukemia

Antrodia camphorata (AC) is a native Taiwanese mushroom, which is used in Asian folk medicine as a chemo-preventive agent. The triterpenoid-rich fraction (FEA) was obtained from the ethanolic extract of AC and characterized by high performance liquid chromatography (HPLC). FEA caused DNA damage in leukemia HL60 cells which was characterized by phosphorylation of H2A.X and Chk2. It also exhibited apoptotic effect which was correlated to the enhancement of PARP cleavage and to the activation of caspase 3.

Taken together, these results provide the first evidence that pure AC component inhibits tumor growth in an in vivo model, thereby backing the traditional anti-cancer use of AC in Asian countries (Du et al., 2012).

Colon Cancer

Antrodia camphorata (AC) grown on germinated brown rice (CBR) was studied in HT-29 human colon cancer cells. CBR 80% ethanol EtOAc fraction showed the strongest inhibitory activity against HT-29 cell proliferation. Induction of G0/G1 cell-cycle arrest on human colon carcinoma cell was observed in CBR EtOAc fraction-treated cells. We found that CBR decreased the level of proteins involved in G0/G1 cell-cycle arrest and apoptosis. CBR EtOAc fraction inhibited the β-catenin signaling pathway, supporting its suppressive activity on the level of cyclin D1 (Park, Lim, & Park, 2013).

A new enynyl-benzenoid, antrocamphin O (1,4,7-dimethoxy-5-methyl-6-(3'-methylbut-3-en-1-ynyl)benzo[d][1,3]dioxide), and the known benzenoids antrocamphin A and 7-dimethoxy-5-methyl-1,3-benzodioxole, were isolated from the fruiting bodies of Antrodia camphorata (Taiwanofungus camphoratus). The benzenoids were tested successfully for cytotoxicity against the HT29, HTC15, DLD-1, and COLO 205 colon cancer cell lines (Chen et al., 2013).

ER+ Ovarian Cancer

MTT and colony formation assays showed that Antrodia camphorata (AC) induced a dose-dependent reduction in SKOV-3 cell growth. Immunoblot analysis demonstrated that HER-2/neu activity and tyrosine phosphorylation were significantly inhibited by AC. Furthermore, AC treatment significantly inhibited the activation of PI3K/Akt and their downstream effector β-catenin (Yang et al., 2013).

References

Chen PY, Wu JD, Tang KY, et al. (2013). Isolation and synthesis of a bioactive benzenoid derivative from the fruiting bodies of Antrodia camphorata. Molecules, 18(7):7600-8. doi: 10.3390/molecules18077600.


Du YC, Chang FR, Wu TY, et al. (2012). Anti-leukemia component, dehydroeburicoic acid from Antrodia camphorata induces DNA damage and apoptosis in vitro and in vivo models. Phytomedicine. doi:10.1016/j.phymed.2012.03.014


Park DK, Lim YH, Park HJ. (2013). Antrodia camphorata Grown on Germinated Brown Rice Inhibits HT-29 Human Colon Carcinoma Proliferation Through Inducing G0/G1 Phase Arrest and Apoptosis by Targeting the β -Catenin Signaling. J Med Food, 16(8):681-91. doi: 10.1089/jmf.2012.2605.


Popovi ć V, Zivkovi ć J, Davidovi ć S, et al. (2013). Mycotherapy Of Cancer: An Update On Cytotoxic And Anti-tumor Activities Of Mushrooms, Bioactive Principles And Molecular Mechanisms Of Their Action. Curr Top Med Chem.


Yang HL, Lin KY, Juan YC, et al. (2013). The anti-cancer activity of Antrodia camphorata against human ovarian carcinoma (SKOV-3) cells via modulation of HER-2/neu signaling pathway. J Ethnopharmacol, 148(1):254-65. doi: 10.1016/j.jep.2013.04.023.

Angelicin

Cancer: Leukemia, colon, ER+ Ovarian

Action: Apoptotic, anti-cancer

Angelicin is a furanocoumarin. It can be found in Bituminaria bituminosa and is structurally related to psoralens, a well-known chemical class of photosensitizers used for its anti-proliferative activity in treatment of different skin diseases.

Induces Apoptosis

The cellular cytotoxicity of angelicin was examined by cell viability assay, DNA fragmentation by DNA ladder assay, and activation of caspases and Bcl-2 family proteins by Western blot analyzes. The results suggest that angelicin increased cellular cytotoxicity in a dose- and time-dependent manner with IC(50) of 49.56 µM at 48 hours of incubation.

In addition, angelicin dose-dependently downregulated the expression of anti-apoptotic proteins including Bcl-2, Bcl-xL, and Mcl-1 suggesting the involvement of the intrinsic mitochondria-mediated apoptotic pathway which did not participate in Fas/FasL-induced caspase-8-mediated extrinsic, MAP kinases, and PI3K/AKT/GSK-3β pathway.

Taken together, these data indicate that angelicin is an effective apoptosis-inducing natural compound of human SH-SY5Y neuroblastoma cells which suggests that this compound may have a role in future therapies for human neuroblastoma cancer (Rahman et al., 2012).

Anti-cancer

Three crude drugs Saussureae Radix, Psoraleae Semen and Aurantti Fructus Immaturus significantly inhibited the proliferation of temperature-sensitive rat lymphatic endothelial (TR-LE) cells in vitro. Angelicin isolated from Aurantti Fructus Immaturus showed selective inhibition of the proliferation of TR-LE cells (Jeong et al., 2013). Angelicin, isolated from Bituminaria morisiana was subjected to cytotoxicity screening against a panel of human cancer cells (Leonti et al., 2010).

References

Jeong D, Watari K, Shirouzu T, et al. (2013). Studies on lymphangiogenesis inhibitors from Korean and Japanese crude drugs. Biol Pharm Bull, 36(1):152-7.


Leonti M, Casu L, Gertsch J, et al. (2010). A pterocarpan from the seeds of Bituminaria morisiana. J Nat Med. 64(3):354-7. doi: 10.1007/s11418-010-0408-7.


Rahman MA, Kim NH, Yang H, Huh SO. (2012). Angelicin induces apoptosis through intrinsic caspase-dependent pathway in human SH-SY5Y neuroblastoma cells. Mol Cell Biochem, 369(1-2):95-104. doi: 10.1007/s11010-012-1372-1.

Aloe-emodin (See also Emodin)

Cancer:
Nasopharyngeal., ER α degradation, Lung, breast, oral., glioblastoma, liver cancer prevention

Action: Cytostatic, radio-sensitizing, chemo-sensitizing

Nasopharyngeal Carcinoma

Aloe-emodin (AE), a natural., biologically active compound from Aloe vera leaves has been shown to induce apoptosis in several cancer cell lines in vitro. Investigation showed that AE induced G2/M phase arrest by increasing levels of cyclin B1 bound to Cdc2, and also caused an increase in apoptosis of nasopharyngeal carcinoma (NPC) cells, which was characterized by morphological changes, nuclear condensation, DNA fragmentation, caspase-3 activation, cleavage of poly (ADP-ribose) polymerase (PARP) and increased sub-G(1) population. Treatment of NPC cells with AE also resulted in a decrease in Bcl-X(L) and an increase in Bax expression.

Collectively, results indicate that the caspase-8-mediated activation of the mitochondrial death pathway plays a critical role in AE-induced apoptosis of NPC cells (Lin et al., 2010).

Glioblastoma

Aloe emodin arrested the cell-cycle in the S phase and promoted the loss of mitochondrial membrane potential in glioblastoma U87 cells that indicated the early event of the mitochondria-induced apoptotic pathway. It plays an important role in the regulation of cell growth and death (Ismail et al., 2013).

Breast Cancer

The anthraquinones emodin and aloe-emodin are also abundant in the rhizome Rheum palmatum and can induce cytosolic estrogen receptor α (ER α) degradation; it primarily affected nuclear ER α distribution similar to the action of estrogen when protein degradation was blocked. In conclusion, our data demonstrate that emodin and aloe-emodin specifically suppress breast cancer cell proliferation by targeting ER α protein stability through distinct mechanisms (Huang et al., 2013).

Lung Cancer

Photoactivated aloe-emodin induced anoikis and changes in cell morphology, which were in part mediated through its effect on cytoskeleton in lung carcinoma H460 cells. The expression of protein kinase Cδ (PKCδ) was triggered by aloe-emodin and irradiation in H460 cells. Furthermore, the photoactivated aloe-emodin-induced cell death and translocation of PKCδ from the cytosol to the nucleus was found to be significantly inhibited by rottlerin, a PKCδ-selective inhibitor (Chang et al., 2012).

Oral Cancer; Radio-sensitizing, Chemo-sensitizing

The treatment of cancer with chemotherapeutic agents and radiation has two major problems: time-dependent development of tumor resistance to therapy (chemoresistance and radioresistance) and nonspecific toxicity toward normal cells. Many plant-derived polyphenols have been studied intensively for their potential chemo-preventive properties and are pharmacologically safe.

These compounds include genistein, curcumin, resveratrol, silymarin, caffeic acid phenethyl ester, flavopiridol, emodin, green tea polyphenols, piperine, oleandrin, ursolic acid, and betulinic acid. Recent research has suggested that these plant polyphenols might be used to sensitize tumor cells to chemotherapeutic agents and radiation therapy by inhibiting pathways that lead to treatment resistance. These agents have also been found to be protective from therapy-associated toxicities.

Treatment with aloe-emodin at 10 to 40 microM resulted in cell-cycle arrest at G2/M phase. The alkaline phosphatase (ALP) activity in KB cells increased upon treatment with aloe-emodin when compared to controls. This is one of the first studies to focus on the expression of ALP in human oral carcinomas cells treated with aloe-emodin. These results indicate that aloe-emodin has anti-cancer effect on oral cancer, which may lead to its use in chemotherapy and chemo-prevention of oral cancer (Xiao et al., 2007).

Liver Cancer Prevention

In Hep G2 cells, aloe-emodin-induced p53 expression and was accompanied by induction of p21 expression that was associated with a cell-cycle arrest in G1 phase. In addition, aloe-emodin had a marked increase in Fas/APO1 receptor and Bax expression. In contrast, with p53-deficient Hep 3B cells, the inhibition of cell proliferation of aloe-emodin was mediated through a p21-dependent manner that did not cause cell-cycle arrest or increase the level of Fas/APO1 receptor, but rather promoted aloe-emodin-induced apoptosis by enhancing expression of Bax.

These findings suggest that aloe-emodin may be useful in liver cancer prevention (Lian et al., 2005).

References

Chang WT, You BJ, Yang WH, et al. (2012). Protein kinase C delta-mediated cytoskeleton remodeling is involved in aloe-emodin-induced photokilling of human lung cancer cells. Anti-cancer Res, 32(9):3707-13.

Huang PH, Huang CY, Chen MC, et al. (2013). Emodin and Aloe-Emodin Suppress Breast Cancer Cell Proliferation through ER α Inhibition. Evid Based Complement Alternat Med, 2013:376123. doi: 10.1155/2013/376123.

Ismail S, Haris K, Abdul Ghani AR, et al. (2013). Enhanced induction of cell-cycle arrest and apoptosis via the mitochondrial membrane potential disruption in human U87 malignant glioma cells by aloe emodin. J Asian Nat Prod Res.

Lian LH, Park EJ, Piao HS, Zhao YZ, Sohn DH. (2005). Aloe Emodin‐Induced Apoptosis in Cells Involves a Mitochondria‐Mediated Pathway. Basic & Clinical Pharmacology & Toxicology, 96(6):495–502.

Lin, ML, Lu, YC, Chung, JG, et al. (2010). Aloe-emodin induces apoptosis of human nasopharyngeal carcinoma cells via caspase-8-mediated activation of the mitochondrial death pathway. Cancer Letters, 291(1), 46-58. doi: 10.1016/j.canlet.2009.09.016.

Xiao B, Guo J, Liu D, Zhang S. (2007). Aloe-emodin induces in vitro G2/M arrest and alkaline phosphatase activation in human oral cancer KB cells. Oral Oncol, 43(9):905-10.

Alismol

Cancer: Breast, cervical, colorectal

Action: Inhibits Ca2+ influx

Breast Cancer, Cervical Carcinoma, Colorectal Carcinoma

Bioassay-guided isolation of the active hexane fractions of Curcuma zedoaria led to the identification of five pure compounds, namely, curzerenone (1), neocurdione (2), curdione (3), alismol (4), and zederone (5) and a mixture of sterols, namely, campesterol (6), stigmasterol (7), and β -sitosterol (8).

Curzerenone and alismol significantly inhibited cell proliferation in human cancer cell lines MCF-7 breast cancer, Ca Ski cervical carcinoma, and HCT-116 colorectal carcinoma in a dose-dependent manner. It can be suggested that curzerenone and alismol are modulated by apoptosis via caspase-3 signaling pathway. The findings of the present study support the use of Curcuma zedoaria rhizomes in traditional medicine for the treatment of cancer-related diseases. Thus, two naturally occurring sesquiterpenoids, curzerenone and alismol, hold great promise for use in chemo-preventive and chemotherapeutic strategies (Syed Abdul Rahman, Abdul Wahab, & Abd Malek, 2013).

Ca2+ influx

Alismol inhibited mainly Ca2+ influx through a voltage-dependent Ca2+ channel (Matsuda et al., 1987) and Alismol, a sesquiterpenoid isolated from Alismatis Rhizoma, caused a sustained, though weak, anti-hypertensive action in all the experimental models, but did not significantly affect the plasma renin activity, ACE activity and the level of aldosterone (Yamahara et al., 1989).

References

Matsuda H, Kobayashi G, Yamahara J, et al. (1987). Effects of alismol isolated from Alismatis Rhizoma on calcium-induced contraction in the rabbit thoracic aorta. Life Sci, 41(15):1845-52.


Syed Abdul Rahman SN, Abdul Wahab N, & Abd Malek SN. (2013). In vitro morphological assessment of apoptosis induced by anti-proliferative constituents from the rhizomes of Curcuma zedoaria. Evidence-Based Complementary and Alternative Medicine, 2013(2013), 257108. doi: 10.1155/2013/257108.


Yamahara J, Kobayashi G, Iwamoto M, et al. (1989). The effect of alismol isolated from alismatis rhizoma on experimental hypertensive models in rats. Phytotherapy Research, 3(2):57–60. doi: 10.1002/ptr.2650030205

β Sitosterol

Cancer: Breast, multiple myeloma

Action: Anti-oxidative

Breast Cancer

While many factors are involved in the etiology of cancer, it has been clearly established that diet significantly impacts one's risk for this disease. More recently, specific food components have been identified which are uniquely beneficial in mitigating the risk of specific cancer subtypes. Plant sterols are well known for their effects on blood cholesterol levels, however research into their potential role in mitigating cancer risk remains in its infancy. The cholesterol modulating actions of plant sterols may overlap with their anti-cancer actions.

Breast cancer is the most common malignancy affecting women and there remains a need for effective adjuvant therapies for this disease, for which plant sterols may play a distinctive role (Grattan, 2013).

Porphyra dentata, an edible red macroalgae, is used as a folk medicine in Asia. The in vitro and in vivo protective effects of a sterol fraction from P. dentata against breast cancer, linked to tumor-induced myeloid derived-suppressor cells (MDSCs), was investigated.

A sterol fraction containing cholesterol, β-sitosterol, and campesterol was prepared by solvent fractionation of methanol extract of P. dentata    in silica gel column chromatography. This sterol fraction in vitro significantly inhibited cell growth and induced apoptosis in 4T1 cancer cells.

The sterol fraction from P. dentata showed potential for protecting an organism from 4T1 cell-based tumor genesis. The anti-cancer effects potentially are a result of the presence of beta-sitosterol and campesterol. This sterol-containing fraction reduced tumorgenesis and increased the survival rate of 4T1-engrafted mice. This inhibition would be consistent with the use of Porphyra dentata as a folk medicine to treat inflammatory disorders and also for breast cancer (Kazlowska et al., 2013).

The role of reactive oxygen species (ROS) in association with AMP-activated protein kinase (AMPK) and c-Jun N-terminal kinase (JNK) pathways was demonstrated in beta-sitosterol-treated multiple myeloma U266 cells. Beta-sitosterol exerted cytotoxicity, increased sub-G1 apoptotic population and activated caspase-9 and -3, cleaved poly (ADP-ribose) polymerase (PARP) followed by decrease in mitochondrial potential in U266 cells. Beta-sitosterol promoted ROS production, activated AMPK, acetyl-CoA carboxylase (ACC) and JNK in U266 cells. Also, beta-sitosterol attenuated the phosphorylation of AKT, mammalian target of rapamycin and S6K, and the expression of cyclooxygenase-2 and VEGF in U266 cells (Sook et al., 2013).

Cancer: Breast, skin epidermoid carcinoma, lung epithelial carcinoma

Action: Promotes apoptosis, antioxidant activity

Among many cancers, breast cancer in females and lung cancer in males are the most frequently diagnosed cancers and the leading cause of cancer death for each sex in both economically developed and developing countries [1]. Lung cancer accounted for 13% of the total cases and 18% of the deaths due to cancer occurred in 2008 [1]. Skin cancer is the major cutaneous malignancy and about 76,250 people are estimated to be diagnosed for skin cancer in 2013 [2]. Incidence rate for melanoma has been rising from past three decades. Breast cancer is by far the most frequent cancer among women with an estimated 23% of all cancers and is the most frequent cause of cancer death in women [1].

The use of natural, synthetic or biological agents to prevent, reverse or suppress the growth and progression of cancer is referred as chemoprevention of cancer [3]. It is one of the most promising strategies for cancer control, and is accomplished by various means including chemoprevention by phytochemicals from vegetables, fruits, spices, teas, herbs and medicinal plants thus making it as one of the most feasible means of cancer control [4]. Phytochemicals are secondary plant metabolites and have been used for centuries throughout the world in traditional cures and herbal remedies, and as ayurvedic and homeopathic medicines in India. More recently, there has been a considerable interest in secondary plant metabolites because of their potential preventative effects on chronic diseases including cancer.

Many studies have demonstrated that phytochemicals in common fruits and vegetables can have complementary and overlapping mechanisms of action, including antioxidant activity, scavenging free radicals and regulation of gene expression, including oncogenes and tumor suppressor genes, in cell proliferation and cell differentiation; induction of cell-cycle arrest and apoptosis; modulation of enzyme activities in detoxification, oxidation and reduction; stimulation of the immune system; regulation of hormone metabolism; and antibacterial and antiviral effects [5-7]. Phytosterols (PS) are triterpenes that are important structural components of plant membranes. More than 200 different types of phytosterols have been reported in plant species. The richest sources of phytosterols are vegetable oils, nuts, cereal products, fruits and berries [8]. Structural resemblance of PS with cholesterol enables them to displace low-density lipoprotein (LDL) cholesterol in the human intestine [9]. Protective effects of PS against cardiovascular diseases (CVD), colon and breast cancer developments have been widely documented. The most common dietary phytosterols are β-sitosterol, campesterol and stigmasterol. Among these, the most abundant phytosterol is β-sitosterol. Studies have shown that β-sitosterol exhibits anti-inflammatory, angiogenic and immune-modulating properties [10]. β-sitosterol is reported to activate Fas signaling in breast cancer cells [11], and induce cell cycle arrest and apoptotic cell death in prostate cancer cells [12,13].

Herein, we evaluated the efficacy of β-sitosterol on three different cancer cell lines including human skin epidermoid carcinoma cell line (A431), human lung epithelial carcinoma cell line (A549) and human breast adenocarcinoma cell line (MDA-MB-231). It was observed that as compared to A431 and A549 cells, β-sitosterol showed prominent growth inhibitory and pro-apoptotic activity in MDA-MB-231 cells. Further, study provides valuable insight into the chemopreventive efficacy and associated molecular alterations of β-sitosterol in breast cancer cells in culture.

The current study shows that β-Sitosterol (ST), a dietary phytosterol has stronger anticancer activity against breast cancer cells compared to lung and skin cancer cells which may be attributed to the differential expression of genes including hormones, receptors and tissue specific proteins. Along with anti-proliferative and growth inhibitory effect, ST induced G0/G1 cell cycle arrest via modulation of cell cycle regulators CDK4, cyclin D1, p21/Cip1and p27/Kip1 breast cancer cells. Further ST caused cell death involves the induction of apoptosis in breast cancer cells via mitochondrial membrane depolarization and increase in Bax/Bcl-2 ratio. This study provides valuable insight into the chemopreventive efficacy and associated molecular alterations of ST in breast cancer cells. However, further studies are needed to understand and assess the potential clinical utility of ST as a chemopreventive agent against breast cancer.

References

Grattan BJ Jr. (2013). Plant sterols as anti-cancer nutrients: evidence for their role in breast cancer. Nutrients, 5(2):359-87. doi: 10.3390/nu5020359.


Kazlowska K, Lin HTV, Chang SH, Tsai GJ. Evidence-Based Complementary and Alternative Medicine. (2013). In vitro and in vivo anti-cancer effects of sterol fraction from red algae porphyra. Evidence-Based Complementary and Alternative Medicine, 2013(2013), 493869. http://dx.doi.org/10.1155/2013/493869.


Sook SH, Lee HJ, Kim JH, et al. (2013). Reactive Oxygen Species-Mediated Activation of AMP-Activated Protein Kinase and c-Jun N-terminal Kinase Plays a Critical Role in Beta-Sitosterol-Induced Apoptosis in Multiple Myeloma U266 cells. Phytother Res. doi: 10.1002/ptr.4999.

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2.American Cancer Society: Cancer Facts and Figures: 2010. Atlanta: American Cancer Society; 2010::1-62.


3.Anne S, Tsao M, Edward S, Kim M, Waun Ki Hong M. Chemoprevention of cancer. Am Cancer J Clin 2004, 54:150-180.


4.Nishino H, Tokuda H, Satomi Y, Masuda M, Onozuka M, Yamaguchi S, Takayasu J: Cancer chemoprevention by phytochemicals and their related compounds. Asian Pacific J Cancer 2000, 1:49-55.


5.Dragsted L, Strube M, Larsen J: Cancer-protective factors in fruits and vegetables: biochemical and biological background. Pharmacol Toxicol 1993, 72:116-135.

6.Demirkol O, Adams C, Ercal N: Biologically important thiols in various vegetables and fruits. J Agric Food Chem 2004, 52:8151-8154.

7.Chandra S, Sah K, Bagewadi A, Keluskar V, Shetty A: Additive and synergistic effect of phytochemicals in prevention of oral cancer. Eur J Gen Dent 2012, 1:142-147.

8.Valsta L, Lemström A, Ovaskainen M, Lampi A, Toivo J, Korhonen T, Piironen V: Estimation of plant sterol and cholesterol intake in Finland: quality of new values and their effect on intake. Br J Nutr 2007, 92:671-678.


9.Trautwein E, Lin Y, Mel S, Molhuizen H, Ntanios F: Proposed mechanisms of cholesterol-lowering action of plant sterols. Eur J Lipid Sci Technol 2003, 105:171-185.


10.Bouic P, Lamprecht J: Plant Sterols and Sterolins: A review of their Immune-modulating properties sterols & sterolins. Altern Med Rev 1999, 4:170-177.


11.Awad A, Chinnam M, Fink C, Bradford P: Beta-Sitosterol activates Fas signaling in human breast cancer cells. Phytomedicine 2007, 14:747-754.


12.Awad A, Burr A, Fink C: Effect of resveratrol and beta-sitosterol in combination on reactive oxygen species and prostaglandin release by PC-3 cells. Prostaglandins Leukot Essent Fat Acids 2005, 72:219-226.

13.Von Holtz R, Fink C, Awad A: Beta-Sitosterol activates the sphingomyelin cycle and induces apoptosis in LNCaP human prostate cancer cells. Nutr Cancer 1998, 32:8-12.

Decursin

Cancer: Prostate, breast, fibrosarcoma, sarcoma

Action: MDR, inflammation, anti-cancer, angiogenesis

Decursin is isolated from Angelica gigas (Nakai).

Angelica gigas NAKAI is used to treat dysmenorrhea, amenorrhea, menopause, abdominal pain, injuries, migraine, and arthritis. The physicochemical and toxicological characterization of compounds in A. gigas NAKAI, decursin, decursinol angelate, diketone decursin, ether decursin, epoxide decursin and oxim decursin, have been extensively studied (Mahat et al., 2012).

Sarcoma; Anti-cancer

The in vivo anti-tumor activities of decursinol angelate (1) and decursin (2) isolated from the roots of Angelica gigas were investigated. These two compounds, when administered consecutively for 9 days at 50 and 100 mg/kg i.p. in mice, caused a significant increase in the life span and a significant decrease in the tumor weight and volume of mice inoculated with Sarcoma-180 tumor cells. These results suggest that decursinol angelate (1) and decursin (2) from A. gigas have anti-tumor activities (Lee et al., 2003).

Fibrosarcoma

Decursin and related coumarin compounds in herbal extracts have a number of biological activities against inflammation, angiogenesis and cancer. The human fibrosarcoma cell line, HT1080, was treated with TNFα (tumor necrosis factor α) in the presence or absence of CSL-32. Treatment of HT1080 cells with a derivative of decursin (CSL-32) inhibited their proliferation, without affecting cell viability, and TNF α-induced expression of pro-inflammatory mediators, such as MMP-9 (matrix metalloproteinase-9) and IL-8 (interleukin-8) (Lee et al., 2012).

Prostate Cancer

Androgen and androgen receptor (AR) signaling are crucial for the genesis of prostate cancer (PCa), which can often develop into androgen-ligand-independent diseases that are lethal to patients. As current chemotherapy is largely ineffective for PCa and has serious toxic side-effects, a collaborative effort has been initiated to identify and develop novel, safe and naturally occurring agents that target AR signaling from Oriental medicinal herbs for the chemoprevention and treatment of PCa. The discovery of decursin from an Oriental formula containing Korean Angelica gigas Nakai (Dang Gui) root as a novel anti-androgen/AR agent has been highlighted and the mechanisms to account for the specific anti-AR actions have been identified: rapid block of AR nuclear translocation, inhibition of binding of 5-dihydrotestesterone to AR, and increased proteasomal degradation of AR protein. Structure-activity analyzes reveal a critical requirement of the side-chain on decursin or its structural isomer decursinol angelate for anti-AR, cell-cycle arrest and pro-apoptotic activities.

This work demonstrates the feasibility of using activity-guided fractionation in cell culture assays combined with mechanistic studies to identify novel anti-androgen/AR agents from complex herbal mixtures (Lu et al., 2007).

MDR

Combination cancer therapy is one of the attractive approaches to overcome drug resistance of cancer cells. In the present study, Jang et al (2013) investigated the synergistic effect of decursin from Angelica gigas and doxorubicin on the induction of apoptosis in three human multiple myeloma cells. The combined treatment reduced mitochondrial membrane potential., suppressed the phosphorylation of JAK2, STAT3, and Src, activated SHP-2, and attenuated the expression of cyclind-D1 and survivin in U266 cells.

Overall, the combination treatment of decursin and doxorubicin can enhance apoptotic activity via mTOR and/or STAT3 signaling pathway in multiple myeloma cells.

Breast Cancer

Decursin significantly reduced protein expression and enzymatic activity of Pin1 in MDA-MB-231 cells. Kim et al (2013) found that decursin treatment enhanced the p53 expression level and failed to down-regulate Pin1 in the cells transfected with p53 siRNA, indicating the importance of p53 in the decursin-mediated Pin1 inhibition in MDA-MB-231 cells. Decursin stimulated association between peptidyl-prolyl cis/trans isomerase Pin1 to p53. Moreover, decursin facilitated p53 transcription in MDA-MB-231 cells. Overall, the study suggests the potential of decursin as an attractive cancer therapeutic agent for breast cancer by targeting Pin1.

References

Jang J, Jeong SJ, Kwon HY, Jung JH, et al. (2013). Decursin and Doxorubicin Are in Synergy for the Induction of Apoptosis via STAT3 and/or mTOR Pathways in Human Multiple Myeloma Cells. Evid Based Complement Alternat Med. 2013:506324. doi: 10.1155/2013/506324.

Kim JH, Jung JH, Kim SH, Jeong SJ. (2013). Decursin Exerts Anti-cancer Activity in MDA-MB-231 Breast Cancer Cells Via Inhibition of the Pin1 Activity and Enhancement of the Pin1/p53 Association.Phytother Res. doi: 10.1002/ptr.4986.

Lee S, Lee YS, Jung SH, et al. (2003). Anti-tumor activities of decursinol angelate and decursin from Angelica gigas. Arch Pharm Res, 26(9):727-30.

Lee SH, Lee JH, Kim EJ, et al. (2012). A novel derivative of decursin, CSL-32, blocks migration and production of inflammatory mediators and modulates PI3K and NF- κB activities in HT1080 cells. Cell Biol Int, 36(7):683-8. doi: 10.1042/CBI20110257.

Lu JX, Kim SH, Jiang C, Lee JJ, Guo JM. (2007). Oriental herbs as a source of novel anti-androgen and prostate cancer chemo-preventive agents. Acta Pharmacologica Sinica, 28, 1365–1372. doi:10.1111/j.1745-7254.2007.00683.x

Mahat B, Chae JW, Baek IH, et al. (2012). Physicochemical characterization and toxicity of decursin and their derivatives from Angelica gigas. Biol Pharm Bull, 35(7):1084-90.

Ukrain

Cancer: Breast, pancreatic, bladder, colorectal

Action: Damages DNA

Ukrain has been described as a semi-synthetic Chelidonium majus alkaloid derivative, consisting of three chelidonine alkaloids combined to triaziridide. Panzer et al. (2000) found the actions of Ukrain to be similar to the Chelidonium majus alkaloids from which it is prepared. Chelidonium majus contains a range of more than 30 alkaloids, most notably isochinolin derivatives (chelidonine, coptisine, berberin etc.). Chemical analyzes of Ukrain were inconsistent with the proposed trimeric structure and demonstrated that at least some commercial preparations of Ukrain consist of a mixture of C. majus alkaloids (including chelidonine) (Panzer et al., 2000).

Ukrain was developed in 1978 by Dr. Wassil J. Nowicky, director of the Ukrainian Anti-Cancer Institute of Vienna, Austria, and was first presented at the 13th International Congress of Chemotherapy in Vienna in August 1983. In 2004 and 2006, Nowicky was nominated for the Nobel Prize in Chemistry. The manufacturer of Ukrain is Nowicky Pharma, A-1040 Vienna, Austria.

Several reports describe Eastern European clinical trials using Ukrain for people with various types of cancer (Susak et al., 1996). The mechanism of action of Ukrain is unknown whereas the mechanism of action of thiotepa is known. The drug works by damaging the DNA of cells, leaving the cell unable to divide.

The proposed activity of Ukrain includes cytotoxicity from effects on cellular oxygen consumption, inhibition of DNA, RNA, and protein synthesis, and induction of apoptosis. In vitro studies demonstrate weak inhibition of tubulin polymerization causing arrest at G2/M phase of the cell-cycle. Limited in vitro data support the claim that Ukrain has selective cytotoxicity against cancer cells. Ukrain also is promoted for its claimed ability to increase total T-cell count and T-helper lymphocytes, while decreasing T-suppressor cells. In vitro activation of splenic lymphocytes also was reported (Colombo et al., 1996; Panzer et al., 2000; Uglyanitsa et al., 1998).

Ukrain has no drug approval in the EU. In the UK, Ukrain neither hasmarketing authorization nor is it registered under the “traditional use” label. It is not FDA-approved in the US but is approved in Mexico, and in the United Arab Emirates, as a standard anti-cancer medication. According to the manufacturer, NSC 631570 (=Ukrain) has drug licences in several states of the former Soviet Union (Ukraine, Georgia, Turkmenistan, Belarus/White Russia, Azerbaijan Republic, Tadshikistan, and the Ukraine. They also claim, without validation, that Ukrain has also been designated as an Orphan Drug for pancreatic cancer in the USA and in Australia (Human life Science Holding, n.d.).

There are seven RCTs assessing the efficacy of Ukrain for various cancer types (Ernst & Schmidt, 2005). The majority of these studies were published in two different journals between 1995 and 2002 by four different groups of authors, three from  Belarus and one from Germany. They relate to colorectal (Susak et al., 1995; Susak et al., 1996) rectal (Bondar et al., 1998), bladder (Uglyanitsa et al., 1998), pancreatic (Zemskov et al., 2000; Zemskov et al., 2002), and breast cancers (Uglyanitsa et al., 2000). Ukrain exposure induced apoptosis in a dose- and time-dependent manner with 50 µg/mL Ukrain leading to >50% cell death after 48 hour exposure for all three breast cancer cell lines.

Ukrain administration (12.5 mg/kg) led to significant inhibition of 4T07 tumor growth in vivo and sustained protective anti-tumor immunity following secondary challenge. Findings demonstrate the in vitro and in vivo cytotoxic effects of Ukrain on breast cancer cells and may provide insight into designing Ukrain-based therapies for breast cancer patients (Bozeman et al., 2012).

While common anti-cancer drugs are toxic both against cancer and normal cells (cytostatics), Ukrain is allegedly only toxic against cancer cells (“malignocytolytic”). Some studies suggest that there was no evidence to suggest selective cytotoxicity previously reported for Ukrain (Panzer et al., 2000). Research carried out at the National Cancer Institute where Ukrain was tested on the screening panel with 60 cell lines from eight human cancer types, it was revealed to be cytotoxic against all the solid cancer cell lines tested (Boehm & Ernst, 2013).

References

Boehm, K., Ernst, E. (2013) CAM-Cancer Consortium. Ukrain [online document]. http://cam-cancer.org/CAM-Summaries/Herbal-products/Ukrain. August 21, 2013.


Bondar, G.V., Borota, A.V., Yakovets, Y.I., Zolotukhin, S.E.(1998)  Comparative evaluation of the complex treatment of rectal cancer patients (chemotherapy and X-ray therapy, Ukrain monotherapy). Drugs Exp Clin Res 1998;24:221-6.

Bozeman, E.N., Srivatsan, S., Mohammadi, H., et al. (2012) Ukrain, a plant derived semi-synthetic compound, exerts anti-tumor effects against murine and human breast cancer and induce protective anti-tumor immunity in mice.  Exp Oncol. 2012 Dec;34(4):340-7.


Colombo, M.L., Bosisio, E.. (1996) Pharmacological activities of Chelidonium majus L. (papaveracea). Pharmacol Res 1996;33:127-34.


Ernst, E., Schmidt, K. (2005) Ukrain – a new cancer cure? A systematic review of randomised clinical trials. BMC Cancer 2005;5:69-75.


Human life Science Holding. (n.d) http://www.open-cc.com/English/1_04.asp Accessed 2 December 2013


Panzer, A., Hamel, E., Joubert, A.M., Bianchi, P.C., Seegers, J.C.. (2000) Ukrain (TM), a semisynthetic Chelidonium majus alkaloid derivative, acts by inhibition of tubulin polymerization in normal and malignant cell lines. Cancer Lett 2000;160(2):149-57.


Susak, Y.M., Yaremchuk, O.Y., Zemskov, V.S., Kravchenko, O.B., et al. (1995) Randomised clinical study of Ukrain on colorectal cancer. Eur J Cancer 1995;31:S153 Abstract 733.


Susak, Y.M., Zemskov, V.S., Yaremchuk, O.Y., et al. (1996) Comparison of chemotherapy and x-ray therapy with Ukrain monotherapy for colorectal cancer. Drugs Exptl Clin Res 1996;22:115–22.


Uglyanitsa, K.N., Nechiporenko, N.A., Nefyodov, L.I., Brzosko, W.J. (1998) Ukrain therapy of stage T1NOMO bladder cancer patients. Drugs Exp Clin Res 1998;24:227-30.

Thymoquinone

Cancer: Osteosarcoma, pancreatic, colorectal., lung, liver, melanoma, breast

Action: Anti-inflammatory

For centuries, the black seed (Nigella sativa (L.)) herb and oil have been used in Asia, Middle East and Africa to promote health and fight disease. Thymoquinone (TQ) is the major phytochemical constituent of Nigella sativa (L.) oil extract. Phytochemical compounds are emerging as a new generation of anti-cancer agents with limited toxicity in cancer patients.

Osteosarcoma

The anti-proliferative and pro-apoptotic effects of TQ were evaluated in two human osteosarcoma cell lines with different p53 mutation status. TQ decreased cell survival dose-dependently and, more significantly, in p53-null MG63 cells (IC(50) = 17 muM) than in p53-mutant MNNG/HOS cells (IC(50) = 38 muM). Cell viability was reduced more selectively in MG63 tumor cells than in normal human osteoblasts.

It was therefore suggested that the resistance of MNNG/HOS cells to drug-induced apoptosis is caused by the up-regulation of p21(WAF1) by the mutant p53 (transcriptional activity was shown by p53 siRNA treatment) which induces cell-cycle arrest and allows repair of DNA damage.

Collectively, these findings show that TQ induces p53-independent apoptosis in human osteosarcoma cells. As the loss of p53 function is frequently observed in osteosarcoma patients, these data suggest the potential clinical usefulness of TQ for the treatment of these malignancies (Roepke et al., 2007).

Pancreatic Ductal Adenocarcinoma

Inflammation has been identified as a significant factor in the development of solid tumor malignancies. It has recently been shown that thymoquinone (Tq) induces apoptosis and inhibited proliferation in PDA cells. The effect of Tq on the expression of different pro-inflammatory cytokines and chemokines was analyzed by real-time polymerase chain reaction (PCR). Tq dose- and time-dependently significantly reduced PDA cell synthesis of MCP-1, TNF-alpha, interleukin (IL)-1beta and Cox-2. Tq also inhibited the constitutive and TNF-alpha-mediated activation of NF-kappaB in PDA cells and reduced the transport of NF-kappaB from the cytosol to the nucleus. Our data demonstrate previously undescribed anti-inflammatory activities of Tq in PDA cells, which are paralleled by inhibition of NF-kappaB. Tq as a novel inhibitor of pro-inflammatory pathways provides a promising strategy that combines anti-inflammatory and pro-apoptotic modes of action (Chehl et al., 2009).

Lung cancer, Hepatoma, Melanoma, Colon Cancer, Breast Cancer

The potential impact of thymoquinone (TQ) was investigated on the survival., invasion of cancer cells in vitro, and tumor growth in vivo. Exposure of cells derived from lung (LNM35), liver (HepG2), colon (HT29), melanoma (MDA-MB-435), and breast (MDA-MB-231 and MCF-7) tumors to increasing TQ concentrations resulted in a significant inhibition of viability through the inhibition of Akt phosphorylation leading to DNA damage and activation of the mitochondrial-signaling pro-apoptotic pathway. Administration of TQ (10 mg/kg/i.p.) for 18 days inhibited the LNM35 tumor growth by 39% (P < 0.05). Tumor growth inhibition was associated with significant increase in the activated caspase-3. In this context, it has been demonstrated that TQ treatment resulted in a significant inhibition of HDAC2 proteins. In view of the available experimental findings, it is contended that thymoquinone and/or its analogues may have clinical potential as an anti-cancer agent alone or in combination with chemotherapeutic drugs such as cisplatin (Attoub et al., 2012).

Colon Cancer

It was reported that TQ inhibits the growth of colon cancer cells which was correlated with G1 phase arrest of the cell-cycle. Furthermore, TUNEL staining and flow cytometry analysis indicate that TQ triggers apoptosis in a dose- and time-dependent manner. These results indicate that TQ is anti-neoplastic and pro-apoptotic against colon cancer cell line HCT116. The apoptotic effects of TQ are modulated by Bcl-2 protein and are linked to and dependent on p53. Our data support the potential for using the agent TQ for the treatment of colon cancer (Gali-Muhtasib et al., 2004).

References

Attoub S, Sperandio O, Raza H, et al. (2012). Thymoquinone as an anti-cancer agent: evidence from inhibition of cancer cells viability and invasion in vitro and tumor growth in vivo. Fundam Clin Pharmacol, 27(5):557-569. doi: 10.1111/j.1472-8206.2012.01056.x


Chehl N, Chipitsyna G, Gong Q, Yeo CJ, Arafat HA. (2009). Anti-inflammatory effects of the Nigella sativa seed extract, thymoquinone, in pancreatic cancer cells. HPB (Oxford), 11(5):373-81. doi: 10.1111/j.1477-2574.2009.00059.x.


Gali-Muhtasib H, Diab-Assaf M, Boltze C, et al. (2004). Thymoquinone extracted from black seed triggers apoptotic cell death in human colorectal cancer cells via a p53-dependent mechanism. Int J Oncol, 25(4):857-66


Roepke M, Diestel A, Bajbouj K, et al. (2007). Lack of p53 augments thymoquinone-induced apoptosis and caspase activation in human osteosarcoma cells. Cancer Biol Ther, 6(2):160-9.

Thymoquinone

Cancer: Osteosarcoma, pancreatic, colorectal., lung, liver, melanoma, breast

Action: Anti-inflammatory

For centuries, the black seed (Nigella sativa (L.)) herb and oil have been used in Asia, Middle East and Africa to promote health and fight disease. Thymoquinone (TQ) is the major phytochemical constituent of Nigella sativa (L.) oil extract. Phytochemical compounds are emerging as a new generation of anti-cancer agents with limited toxicity in cancer patients.

Osteosarcoma

The anti-proliferative and pro-apoptotic effects of TQ were evaluated in two human osteosarcoma cell lines with different p53 mutation status. TQ decreased cell survival dose-dependently and, more significantly, in p53-null MG63 cells (IC(50) = 17 muM) than in p53-mutant MNNG/HOS cells (IC(50) = 38 muM). Cell viability was reduced more selectively in MG63 tumor cells than in normal human osteoblasts.

It was therefore suggested that the resistance of MNNG/HOS cells to drug-induced apoptosis is caused by the up-regulation of p21(WAF1) by the mutant p53 (transcriptional activity was shown by p53 siRNA treatment) which induces cell-cycle arrest and allows repair of DNA damage.

Collectively, these findings show that TQ induces p53-independent apoptosis in human osteosarcoma cells. As the loss of p53 function is frequently observed in osteosarcoma patients, these data suggest the potential clinical usefulness of TQ for the treatment of these malignancies (Roepke et al., 2007).

Pancreatic Ductal Adenocarcinoma

Inflammation has been identified as a significant factor in the development of solid tumor malignancies. It has recently been shown that thymoquinone (Tq) induces apoptosis and inhibited proliferation in PDA cells. The effect of Tq on the expression of different pro-inflammatory cytokines and chemokines was analyzed by real-time polymerase chain reaction (PCR). Tq dose- and time-dependently significantly reduced PDA cell synthesis of MCP-1, TNF-alpha, interleukin (IL)-1beta and Cox-2. Tq also inhibited the constitutive and TNF-alpha-mediated activation of NF-kappaB in PDA cells and reduced the transport of NF-kappaB from the cytosol to the nucleus. Our data demonstrate previously undescribed anti-inflammatory activities of Tq in PDA cells, which are paralleled by inhibition of NF-kappaB. Tq as a novel inhibitor of pro-inflammatory pathways provides a promising strategy that combines anti-inflammatory and pro-apoptotic modes of action (Chehl et al., 2009).

Lung cancer, Hepatoma, Melanoma, Colon Cancer, Breast Cancer

The potential impact of thymoquinone (TQ) was investigated on the survival., invasion of cancer cells in vitro, and tumor growth in vivo. Exposure of cells derived from lung (LNM35), liver (HepG2), colon (HT29), melanoma (MDA-MB-435), and breast (MDA-MB-231 and MCF-7) tumors to increasing TQ concentrations resulted in a significant inhibition of viability through the inhibition of Akt phosphorylation leading to DNA damage and activation of the mitochondrial-signaling pro-apoptotic pathway. Administration of TQ (10 mg/kg/i.p.) for 18 days inhibited the LNM35 tumor growth by 39% (P < 0.05). Tumor growth inhibition was associated with significant increase in the activated caspase-3. In this context, it has been demonstrated that TQ treatment resulted in a significant inhibition of HDAC2 proteins. In view of the available experimental findings, it is contended that thymoquinone and/or its analogues may have clinical potential as an anti-cancer agent alone or in combination with chemotherapeutic drugs such as cisplatin (Attoub et al., 2012).

Colon Cancer

It was reported that TQ inhibits the growth of colon cancer cells which was correlated with G1 phase arrest of the cell-cycle. Furthermore, TUNEL staining and flow cytometry analysis indicate that TQ triggers apoptosis in a dose- and time-dependent manner. These results indicate that TQ is anti-neoplastic and pro-apoptotic against colon cancer cell line HCT116. The apoptotic effects of TQ are modulated by Bcl-2 protein and are linked to and dependent on p53. Our data support the potential for using the agent TQ for the treatment of colon cancer (Gali-Muhtasib et al., 2004).

References

Attoub S, Sperandio O, Raza H, et al. (2012). Thymoquinone as an anti-cancer agent: evidence from inhibition of cancer cells viability and invasion in vitro and tumor growth in vivo. Fundam Clin Pharmacol, 27(5):557-569. doi: 10.1111/j.1472-8206.2012.01056.x


Chehl N, Chipitsyna G, Gong Q, Yeo CJ, Arafat HA. (2009). Anti-inflammatory effects of the Nigella sativa seed extract, thymoquinone, in pancreatic cancer cells. HPB (Oxford), 11(5):373-81. doi: 10.1111/j.1477-2574.2009.00059.x.


Gali-Muhtasib H, Diab-Assaf M, Boltze C, et al. (2004). Thymoquinone extracted from black seed triggers apoptotic cell death in human colorectal cancer cells via a p53-dependent mechanism. Int J Oncol, 25(4):857-66


Roepke M, Diestel A, Bajbouj K, et al. (2007). Lack of p53 augments thymoquinone-induced apoptosis and caspase activation in human osteosarcoma cells. Cancer Biol Ther, 6(2):160-9.

Polyphyllin D

Paris polyphylla is a traditional Chinese medicinal herb that has been used in treating cancer for thousands of years. Polyphyllin D is the steroidal saponin of P. polyphylla.

Breast Cancer

Polyphyllin D elicits apoptosis through mitochondria dysfunction. In vivo study demonstrated that daily administration of Polyphyllin D (2.73 mg/kg body weight) through intravenous injection for ten days in nude mice bearing MCF-7 cells effectively reduced tumor growth for 50% in terms of tumor weight and size, given no significant toxicity in heart and liver to the host. All these findings provide novel insights that Polyphyllin D could serve as a candidate in breast cancer treatment (Lee et al., 2005).

Reference

Lee MS, Yuet-Wa JC, Kong SK, et al. (2005). Effects of Polyphyllin D, a steroidal saponin in Paris polyphylla, in growth inhibition of human breast cancer cells and in xenograft. Cancer Biol Ther, 4(11):1248-54.

Oxymatrine or Compound Matrine (Ku Shen)

Cancer: Sarcoma, pancreatic, breast, liver, lung, oral., rectal., stomach, leukemia, adenoid cystic carcinoma

Action: Anti-inflammatory, anti-proliferative, chemo-sensitizer, chemotherapy support, cytostatic, radiation support, anti-angiogenesis

Ingredients: ku shen (Sophora flavescens), bai tu ling (Heterosmilax chinensis).

TCM functions: Clearing Heat, inducing diuresis, cooling Blood, removing Toxin, dispersing lumps and relieving pain (Drug Information Reference in Chinese: See end, 2000-12).

Indications: Pain and bleeding caused by cancer.

Dosage and usage:

Intramuscular injection: 2-4 ml each time, twice daily; intravenous drip: 12 ml mixed in 200 ml NaCl injection, once daily. The total amount of 200 ml administration makes up a course of treatment. 2-3 consecutive courses can be applied.

Anti-cancer

Oxymatrine, isolated from the dried roots of Sophora flavescens (Aiton), has a long history of use in traditional Chinese medicine to treat inflammatory diseases and cancer. Kushen alkaloids (KS-As) and kushen flavonoids (KS-Fs) are well-characterized components in kushen. KS-As containing oxymatrine, matrine, and total alkaloids have been developed in China as anti-cancer drugs. More potent anti-tumor activities were identified in KS-Fs than in KS-As in vitro and in vivo (Sun et al., 2012). The four major alkaloids in compound Ku Shen injection are matrine, sophoridine, oxymatrine and oxysophocarpine (Qi, Zhang, & Zhang, 2013).

Sarcoma

When a high dose was used, the tumor-inhibitory rate of oxymatrine was 31.36%, and the vascular density of S180 sarcoma was lower than that in the control group and the expression of VEGF and bFGF was down-regulated. Oxymatrine hence has an inhibitory effect on S180 sarcoma and strong inhibitory effects on angiogenesis. Its mechanism may be associated with the down-regulating of VEGF and bFGF expression (Kong et al., 2003).

T Cell Leukemia

Matrine, a small molecule derived from the root of Sophora flavescens AIT was demonstrated to be effective in inducing T cell anergy in human T cell leukemia Jurkat cells.

The results showed that passage of the cells, and concentration and stimulation time of ionomycin on the cells could influence the ability of T cell anergy induction.

The cells exposed to matrine showed markedly decreased mRNA expression of interleukin-2, an indicator of T cell anergy. Pre-incubation with matrine or ionomycin could also shorten extracellular signal-regulated kinase (ERK) and suppress c-Jun NH(2)-terminal kinase (JNK) expression on the anergic Jurkat cells when the cells were stimulated with anti-OKT-3 plus anti-CD28 antibodies. Thus, matrine is a strong candidate for further investigation as a T cell immunotolerance inducer (Li et al., 2010).

Osteosarcoma

Results showed that treatment with oxymatrine resulted in a significant inhibition of cell proliferation and DNA synthesis in a dose-dependent manner, which has been attributed to apoptosis. Oxymatrine considerably inhibited the expression of Bcl-2 whilst increasing that of Bax.

Oxymatrine significantly suppressed tumor growth in female BALB/C nude mice bearing osteosarcoma MNNG/HOS xenograft tumors. In addition, no evidence of drug-related toxicity was identified in the treated animals by comparing the body weight increase and mortality (Zhang et al., 2013).

Pancreatic Cancer

Oxymatrine decreased the expression of angiogenesis-associated factors, including nuclear factor κB (NF-κB) and vascular endothelial growth factor (VEGF). Finally, the anti-proliferative and anti-angiogenic effects of oxymatrine on human pancreatic cancer were further confirmed in pancreatic cancer xenograft tumors in nude mice (Chen et al., 2013).

Furthermore, oxymatrine treatment led to the release of cytochrome c and activation of caspase-3 proteins. Oxymatrine can induce apoptotic cell death of human pancreatic cancer, which might be attributed to the regulation of Bcl-2 and IAP families, release of mitochondrial cytochrome c and activation of caspase-3 (Ling et al., 2011).

Rectal Carcinoma

Eighty-four patients diagnosed with rectal carcinoma at the People”s Hospital of Yichun city in Jiangxi province from September 2006 to September 2011, were randomly divided into two groups: therapeutic group and control group. The patients in the therapeutic group were treated with compound matrine and intensity modulated radiation therapy (IMRT) (30 Gy/10 f/2 W), while the patients in control group were treated with IMRT.

The clinical effect and survival rate in the therapeutic group were significantly higher (47.6%) than those in the control group (21.4%). All patients were divided by improvement, stability, and progression of disease in accordance with Karnofsky Performance Scale (KPS). According to the KPS, 16 patients had improvement, 17 stabilized and 9 had disease progress in the therapeutic group.

However, the control group had 12 improvements, 14 stabilized, and 16 disease progress. Quality of life in the therapeutic group was higher than that in the control group by rank sum test. The level of sIL-2R and IL-8 in the therapeutic group was lower on the first and 14th day, post radiation, when compared to the control group. However, there was no significant difference on the first day and 14th day, between both experimental groups post therapy, according to the student test. Compound matrine can decrease the side-effects of IMRT, significantly inhibit sIL-2R and IL-8 in peripheral blood from radiation, and can improve survival quality in patients with rectal cancer (Yin et al., 2013).

Gastric Cancer

Seventy-six cases of advanced gastric cancer were collected from June 2010 to November 2011, and randomly divided into either an experimental group or control group. Patients in the two groups were treated with matrine injection combined with SP regimen, or SP regimen alone, respectively. The effectiveness rate of the experimental group and control group was 57.5% and 52.8% respectively.

The treatment of advanced gastric cancer with matrine injection, combined with the SP regimen, can significantly improve levels of white blood cells and hemoglobin, liver function, incidence of diarrhea and constipation, and neurotoxicity, to improve the quality of life in patients with advanced gastric cancer (Xia, 2013).

Adenoid Cystic Carcinoma

Adenoid cystic carcinoma (ACC-2) cells were cultured in vitro. MTT assay was used to measure the cell proliferative effect. Compound radix Sophorae flavescentis injection could inhibit the proliferation of ACC-2 cells in vitro, and the dosage effect relationship was significant (P < 0.01). Radix Sophorae flavescentis injection could enhance ACC-2 cells Caspase-3 protein expression (P < 0.05 or P < 0.01), in a dose-dependent manner. It also could effectively restrain human adenoid cystic carcinoma ACC-2 cells Caspases-3 protein expression, and induce apoptosis, inhibiting tumor cell proliferation (Shi & Hu, 2012).

Breast Cancer; Chemotherapy

A retrospective analysis of oncological data of 70 postoperative patients with breast cancer from January 2008 to August 2011 was performed. According to the treatment method, the patients were divided into a therapy group (n=35) or control group (n=35). Patients in the control group were treated with the taxotere, adriamycin and cyclophosphamide regimen (TAC). The therapy group was treated with a combination of TAC and sophora root injection. Improved quality of life and incidence of adverse events, before and after treatment, for 2 cycles (21 days for a cycle) were compared.

The improvement rate of total quality of life in the therapy group was higher than that of the control group (P < 0.05). The drop of white blood cells and platelets, gastrointestinal reaction, elevated SGPT, and the incidence of hair loss in the therapy group were lower than those of the control group (P < 0.05).

Sophora root injection combined with chemotherapy in treatment of breast cancer can enhance the effect of chemotherapy, reduce toxicity and side-effects, and improve quality of life (An, An, & Wu, 2012).

Lung cancer; Pleural Effusion

The therapeutic efficiency of Fufang Kushen Injection Liquid (FFKSIL), IL-2, α-IFN on lung cancer accompanied with malignancy pleural effusions, was observed.

One hundred and fifty patients with lung cancer, accompanied with pleural effusions, were randomly divided into treatment and control groups. The treatment group was divided into three groups: injected FFKSIL plus IL-2, FFKSIL plus α-tFN, and IL-2 plus α>-IFN, respectively. The control group was divided into three groups and injected FFKSIL, IL-2 and α>-IFN, respectively. The effective rate of FFKSIL, IL-2, and α-IFN in a combination was significantly superior to single pharmacotherapy. The effective rate of fufangkushen plus ct-IFN was highest. The effect of FFKSIL, IL-2, and α-IFN, in a combination, on lung cancer with pleural effusions was significantly better than single pharmacotherapy. Moreover, the effect of FFKSIL plus IL-2 or α-IFN had the greatest effect (Hu & Mei, 2012).

Gastric Cancer

Administration of FFKSIL significantly enhanced serum IgA, IgG, IgM, IL-2, IL-4 and IL-10 levels, decreased serum IL-6 and TNF-αlevels, lowered the levels of lipid peroxides and enhanced GSH levels and activities of GSH-dependent enzymes. Our results suggest that FFKSIL blocks experimental gastric carcinogenesis by protecting against carcinogen-induced oxidative damage and improving immunity activity (Zhou et al., 2012).

Colorectal Cancer; Chemotherapy

Eighty patients after colorectal cancer resection were randomly divided into two groups: 40 patients in the control group were treated with routine chemotherapy including 5-fluorouridine(5-FU), calcium folinate(CF) and oxaliplatin, and 40 patients in the experimental group were treated with the same chemotherapy regime combined with 20 mLád-1 compound Kushen injection, for 10d during chemotherapy. In the control group the numbers of CD3+,CD4+T cells,NK cells and CD4+/CD8+ ratio significantly declined relative to prior to chemotherapy (P < 0.05), while CD8+T lymphocyte number increased significantly. In the experimental group, there were no significant differences between the numbers of CD3+,CD4+,CD8+T cells ,NK cells, and CD4+/CD8+ ratio, before and after chemotherapy (P > 0.05).

Compound Kushen injection can improve the immunologic function of patients receiving chemotherapy after colorectal cancer resection (Chen, Yu, Yuan, & Yuan, 2009).

NSCLC; Chemotherapy

A total of 286 patients with advanced NSCLC were enrolled for study. The patients were treated with either compound Kushen injection in combination with NP (NVB + CBP) chemotherapy (vinorelbine and carboplatin, n = 144), or with NP (NVB + CBP) chemotherapy alone (n = 142). The following indicators were observed: levels of Hb, WBC, PLT and T cell subpopulations in blood, serum IgG level, short-term  efficacy, adverse effects and quality of life.

The gastrointestinal reactions and the myelosuppression in the combination chemotherapy group were alleviated when compared with the chemotherapy alone group, showing a significant difference (P < 0.05). CD (8)(+) cells were markedly declined in the combination chemotherapy group, and the CD (4)(+)/CD (8)(+) ratio showed an elevation trend in the chemotherapy alone group. The Karnofsky Performance Scale (KPS) scores and serum IgM and IgG levels were higher in the combination chemotherapy group than those in the chemotherapy alone group (P < 0.01 and P < 0.05).

The compound Kushen injection plus NP chemotherapy regimen showed better therapeutic effect, reduced adverse effects of chemotherapy and improved the quality of life in patients with stage III and IV NSCLC (Fan et al., 2010).

Lung Adenocarcinoma

Different concentrations of matrine injection could inhibit the growth of SPCA/I human lung adenocarcinoma cells. There was a positive correlation between the inhibition rate and the drug concentration. Different concentrations of matrine injection combined with anti-tumor drugs had a higher growth inhibition rate than anti-tumor drugs alone. Matrine injection has direct growth suppression effect on SPCA/I human lung adenocarcinoma cells and SS+ injection combined with anti-tumor drugs shows a significant synergistic effect on tumor cells (Zhu, Jiang, Lu, Guo, & Gan, 2008).

Liver Cancer

Fifty-seven patients with unresectable primary liver cancer were randomly divided into 2 groups. The treatment group with 27 cases was treated by TACE combined with composite Kushen injection, and the control group with 30 cases was treated by TACE alone. One, two, and three year survival rates of the treatment group were 67%, 48%, and 37% respectively, and those of control group were 53%, 37%, and 20% respectively. There were significant differences between both groups (P < 0.05).

Combined TACE with composite Kushen injection can increase the efficacy of patients with unresectable primary liver cancer (Wang & Cheng, 2009).

Chemotherapy

Ten RCTs were included in a meta-analysis, whose results suggest that compared with chemotherapy alone, the combination had a statistically significant benefit in healing efficacy and improving quality of life. As well,  the combination also had a statistically significant benefit in myelosuppression, white blood cell, hematoblast, liver function and in reducing the gastroenteric reaction, decreasing the of CD3, CD4, CD4/CD8, and NK cells (Huang et al., 2011).

Colorectal Cancer, NSCLC, Breast Cancer; Chemotherapy

Fufang kushen Injection might improve the efficacies of chemotherapy in patients with colorectal cancer, NSCLC and breast cancer.

The results of a meta-analysis of 33 studies of randomized controlled trials with a total of 2,897 patients demonstrated that the short-term efficacies in patients with colorectal cancer, NSCLC, and breast cancer receiving Fufangkushen Injection plus chemotherapy were significantly better than for those receiving chemotherapy alone. However the results for patients with gastric cancer on combined chemotherapy were not significantly different from those for patients on chemotherapy alone (Fang, Lin, & Fan, 2011).

References

An, A.J., An, G.W., & Wu, Y.C. (2012). Observation of compound recipe light yellow Sophora root injection combined with chemotherapy in treatment of 35 postoperative patients with breast cancer. Medical & Pharmaceutical Journal of Chinese People”s Liberation Army, 24(10), 43-46. doi: 10.3969/j.issn.2095-140X.2012.10.016.


Chen, G., Yu, B., Yuan, S.J., & Yuan, Q. (2009). Effects of compound Kushen injection on the immunologic function of patients after colorectal cancer resection. Evaluation and Analysis of Drug-Use in Hospitals of China, 2009(9), R735.3. doi: cnki:sun:yypf.0.2009-09-025.


Chen H, Zhang J, Luo J, et al. (2013). Anti-angiogenic effects of oxymatrine on pancreatic cancer by inhibition of the NF-κB-mediated VEGF signaling pathway. Oncol Rep, 30(2):589-95. doi: 10.3892/or.2013.2529.


Fan, C.X., Lin, C.L., Liang, L., Zhao, Y.Y., Liu, J., Cui, J., Yang, Q.M., Wang, Y.L., & Zhang, A.R. (2010). Enhancing effect of compound Kushen injection in combination with chemotherapy for patients with advanced non-small-cell lung cancer. Chinese Journal of Oncology, 32(4), 294-297.


Fang, L., Lin, N.M., Fan, Y. (2011). Short-term  efficacies of Fufangkushen Injection plus chemotherapy in patients with solid tumors: a meta-analysis of randomized trials. Zhonghua Yi Xue Za Zhi, 91(35):2476-81.


Hu, D.J., & Mei, X.D. (2012). Observing therapeutic efficiency of fufangkushen injection, IL-2, α-IFN on lung cancer accompanied with malignancy pleural effusions. Journal of Clinical Pulmonology, 17(10), 1844-1845.


Huang S, Fan W, Liu P, Tian J. (2011). Meta-analysis of compound matrine injection combined with cisplatin chemotherapy for advanced gastric cancer. Zhongguo Zhong Yao Za Zhi, 36(22):3198-202.


Kong, Q-Z., Huang, D-S., Huang, T. et al. (2003). Experimental study on inhibiting angiogenesis in mice S180 by injections of three traditional Chinese herbs. Chinese Journal of Hospital Pharmacy, 2003-11. doi: CNKI:SUN:ZGYZ.0.2003-11-002


Li T, Wong VK, Yi XQ, et al. (2010). Matrine induces cell anergy in human Jurkat T cells through modulation of mitogen-activated protein kinases and nuclear factor of activated T-cells signaling with concomitant up-regulation of anergy-associated genes expression. Biol Pharm Bull, 33(1):40-6.


Ling Q, Xu X, Wei X, et al. (2011). Oxymatrine induces human pancreatic cancer PANC-1 cells apoptosis via regulating expression of Bcl-2 and IAP families, and releasing of cytochrome c. J Exp Clin Cancer Res, 30:66. doi: 10.1186/1756-9966-30-66.


Qi, L., Zhang, J., Zhang, Z. (2013). Determination of four alkaloids in Compound Kushen Injection by high performance liquid chromatography with ionic liquid as mobile phase additive. Chinese Journal of Chromatography, 31(3): 249-253. doi: 10.3724/SP.J.1123.2012.10039.


Shi, B., & Xu, H. (2012). Effects of compound radix Sophorae flavescentis injection on proliferation, apoptosis and caspase-3 expression in adenoid cystic carcinoma ACC-2 cells. Chinese Pharmacological Bulletin, 5(10), 721-724.


Sun M, Cao H, Sun L, et al. (2012). Anti-tumor activities of kushen: literature review. Evid Based Complement Alternat Med, 2012:373219. doi: 10.1155/2012/373219.


Wang, H.M., & Cheng, X.M. (2009). Composite Ku Shen injection combined with hepatic artery embolism on unresectable primary liver cancer. Modern Journal of Integrated Traditional Chinese and Western Medicine, 18(2), 1334–1335.


Xia, G. (2013). Clinical observation of compound matrine injection combined with SP regimen in advanced gastric cancer. Journal of Liaoning Medical University, 2013(1), 37-38.


Yin, W.H., Sheng, J.W., Xia, H.M., Chen, J., Wu, Y.W., & Fan, H.Z. (2013). Study on the effect of compound matrine on the level of sIL-2R and IL-8 in peripheral blood cells of patients with rectal cancer to radiation. Global Traditional Chinese Medicine, 2013(2), 100-104.


Zhang Y, Sun S, Chen J, et al. (2013). Oxymatrine induces mitochondria dependent apoptosis in human osteosarcoma MNNG/HOS cells through inhibition of PI3K/Akt pathway. Tumor Biol.


Zhou, S-K., Zhang, R-L., Xu, Y-F., Bi, T-N. (2012) Anti-oxidant and Immunity Activities of Fufang Kushen Injection Liquid. Molecules 2012, 17(6), 6481-6490; doi:10.3390/molecules17066481


Zhu, M.Y., Jiang, Z.H., Lu, Y.W., Guo, Y., & Gan, J.J. (2008). Matrine and anti-tumor drugs in inhibiting the growth of human lung cancer cell line. Journal of Chinese Integrative Medicine, 6(2), 163-165. doi: 10.3736/jcim20080211.