Advances in the study of berberine and its derivatives: a focus on anti-inflammatory and anti-tumor effects in the digestive system

Kun Zou, Zhao Li, Yong Zhang, Hao-Yue Zhang, Bo Li, Wei-Liang Zhu, Ji-Ye Shi, Qi Jia, Yi-Ming Li, Kun Zou, Zhao Li, Yong Zhang, Hao-Yue Zhang, Bo Li, Wei-Liang Zhu, Ji-Ye Shi, Qi Jia, Yi-Ming Li

Abstract

It has been widely recognized that inflammation, particularly chronic inflammation, can increase the risk of cancer and that the simultaneous treatment of inflammation and cancer may produce excellent therapeutic effects. Berberine, an alkaloid isolated from Rhizoma coptidis, has broad applications, particularly as an antibacterial agent in the clinic with a long history. Over the past decade, many reports have demonstrated that this natural product and its derivatives have high activity against both cancer and inflammation. In this review, we summarize the advances in studing berberine and its derivatives as anti-inflammatory and anti-tumor agents in the digestive system; we also discuss their structure-activity relationship. These data should be useful for the development of this natural product as novel anticancer drugs with anti-inflammation activity.

Figures

Figure 1
Figure 1
The molecular basis of cancer-related inflammation.
Figure 2
Figure 2
Structure of berberine.
Figure 3
Figure 3
Summary of the anti-inflammatory effect of berberine.
Figure 4
Figure 4
Summary of the anti-tumor effect of berberine. “→” stands for inhibition or down-regulation.
Figure 5
Figure 5
Structures of compounds 1 and 2.
Figure 6
Figure 6
Structures of compounds 3–9.
Figure 7
Figure 7
Structures of compounds 10–18.
Figure 8
Figure 8
Structures of compounds 19–23.

References

    1. Coussens LM, Werb Z. Inflammation and cancer. Nature 2002; 420: 860–7.
    1. Crusz SM, Balkwill FR. Inflammation and cancer: advance and new agents. Nat Rev Clin Oncol 2015; 12: 584–96.
    1. Mbeunkui F. Johannn DJ Jr. Cancer and the tumor microenvironment: a review of an essential relationship. Cancer Chemother Pharmacol 2009; 63: 571–82.
    1. Sutcliffe S, Platz EA. Inflammation and prostate cancer: a focus on infection. Curr Urol Rep 2008; 9: 243–9.
    1. Liu Z, Xiao B, Mao XH, Zou QM. Research progress on relationship between inflammation and tumor. Prog Mod Biomed 2009; 9: 591–4.
    1. Sziosarek PW, Grimshaw MJ, Kulbe H, Wlison JL, Wilbanks GD, Burke F, et al. Expression and regulation of tumor necrosis factor alpha in normal and malignant ovarian epithelium. Mol Cancer Ther 2006; 5: 382–90.
    1. Balkwill F. Tumour necrosis factor and cancer. Nat Rev Cancer 2009; 9: 361–71.
    1. Jin X, Song X, Cao YB, Jiang YY, Sun QY. Research progress in structural modification and pharmacological activities of berberine. J Pharma Prac 2014; 32: 171–5.
    1. Jabbarzadeh Kaboli P, Rahmat A, Ismail P, Ling KH. Targets and mechanisms of berberine, a natural drug with potential to treat cancer with special focus on breast cancer. Eur J Pharmacol 2014; 740: 584–95.
    1. Ortiz LM, Lombardi P, Tillhon M, Scovassi Al. Berberine, an epiphany against cancer. Molecules 2014; 19: 12349–67.
    1. Sun Y, Xun K, Wang Y, Chen X. A systematic review of the anticancer properties of berberine: a natural product from Chinese herbs. Anti-cancer Drugs 2009; 13: 757–69.
    1. Tang J, Feng Y, Tsao S, Wang N, Curtain R, Wang Y. Berberine and Coptidis rhizoma as novel antineoplastic agents: a review of traditional use and biomedical investigations. J Ethnopharmacol 2009; 13: 5–17.
    1. Wang Y, Kheir MM, Chai Y, Hu J, Xing D, Lei F, et al. Comprehensive study in the inhibitory effect of berberine on gene transcription, including TATA box. PLoS One 2011; 6: e23495.
    1. Huang ZJ, Zeng Y, Lan P, Sun PH, Chen WM. Advances in structural modifications and biological activities of berberine: an active compound in traditional Chinese medicine. Mini Rev Med Chem 2011; 11: 1122–9.
    1. Li B, Zhu WL, Chen KX. Advances in the study of berberine and its derivatives. Acta Pharm Sin 2008; 43: 773–87.
    1. Amasheh M, Fromm A, Krug SM, Amasheh S, Andress S, Zeitz M, et al. TNF alpha-induced and berberine-antagonized tight junction barrier impairment via tyrosine kinase, Akt and NF kappa B singaling. J Cell Sci 2010; 123: 4145–55.
    1. Li N, Gu L, Qu l, Gong J, Li Q, Zhu W, et al. Berberine attenuates pro-inflammatory cytokine-induced tight junction disruption in an in vitro model of intestinal epithelial cell. Eur J Pharm Sci 2010; 40: 1–8.
    1. Gu L, Li N, Gong J, Li Q, Zhu W, Li J. Berberine ameliorates intestinal epithelial tight-junction damage and down-regulates myosin light chain kinase pathways in a mouse model of endotoxinemia. J Infect Dis 2011; 203: 1602–12.
    1. Amasheh M, Grotjohann I, Amasheh S, Fromm A, Soderholm JD, Zeitz M, et al. Regulation of mucosal structure and barrier function in rat colon exposed to tumor necrosis factor alpha and interferon gamma in vitro: a novel model for studying the pathomechanisms of inflammatory bowel disease cytokines. Scand J Gastroenterol 2009; 44: 1226–35.
    1. Zhou H, Mineshhita S. The effect of berberine chloride on experiment colitis in rat in vivo and in vitro. J Pharmacol Exp Ther 2000; 294: 822–9.
    1. De Plean IG, Han XB, Liu X, Hsueh W, Ghosh S, May MJ. Lipopolysaccharide induces CXCL2/macrophage inflammatory protein-2 gene expression in enterocytes via NF-kappaB activation: independence from endogenous TNF-alpha and platelet-activating factor. Immunology 2006; 118: 153–63.
    1. Remppis A, Bea F, Greten HJ, Buttler A, Wang H, Zhou Q, et al. Rhizoma Coptidis inhibits LPS-induced MCP-1/CCL2 production in murine macrophages via an AP-1 and NF-kappaB-dependent pathway. Mediators Inflamm 2010; 2010: 1–8.
    1. Li F, Wang HD, Lu DX, Wang YP, Qi RB, Fu YM, et al. Neutral sulfate berberine modulates cytokine secretion and increases survival in endotoxemic mice. Acta Pharmacol Sin 2006; 27: 1199–205.
    1. Zhang Q, Piao XL, Piao XS, Lu T, Wang D, Kim SW. Preventive effect of Coptis chinensis and berberine on intestinal injury in rats challenged with lipopolysaccharides. Food Chem Toxicol 2010; 49: 61–9.
    1. Li HM, Wang YY, Wang HD, Cao WJ, Yu XH, Lu DX, et al. Berberine protects against lipopolysaccharide-induced intestinal injury in mice via alpha 2 adrenoceptor-independent mechanisns. Acta Pharmacol Sin 2011; 32: 1362–74.
    1. Jeong HW, Hsu KC, Lee JW, Ham M, Huh JY, Shin HJ, et al. Berberine suppresses pro-inflammatory responses through AMPK activation in macrophages. Am J Physiol Endocrinol Metab 2009; 296: E955–64.
    1. Yan F, Wang L, Shi Y, Cao H, Liu L, Washington MK, et al. Berberine promotes recovery of colitis and inhibits inflammatory responses in colonic macrophages and epithelial cells in DSS-treated mice. Am J Physiol Gastrointest Liver Physiol 2012; 302: G504–14.
    1. Kuo CL, Chi CW, Liu TY. The anti-inflammatory potential of berberine in vitro and in vivo. Cancer Lett 2004; 203: 127–37.
    1. Jeong HW, Hsu KC, Lee JW, Ham M, Huh JY, Kim WS, et al. Berberine suppresses proinflammatory responses through AMPK activation in macrophages. Am J Physiol Endocrinol Metab 2009; 296: E955–64.
    1. Kim WS, Lee YS, Cha SH, Jeong HW, Choe SS, Lee MR, et al. Berberine improves lipid dysregulation in obesity by controlling central and peripheral AMPK activity. Am J Physiol Endocrinol Metab 2009; 296: E812–9.
    1. Germoush MO, Mahmoud AM. Berberine mitigates cyclophosphamide-induced hepatotoxicity by modulating antioxidant status and inflammatory cytokines. J Cancer Res Clin Oncol 2014; 140: 1103–9.
    1. Lou TJ, Zhang ZA, Xi ZL. Berberine inhibits inflammatory response and ameliorates insulin resistance in hepatocytes. Inflammation 2011; 34: 659–67.
    1. Chueh WH, Lin JY. Protective effect of isoquinoline alkaloid berberine on spontaneous inflammation in the spleen, liver and kidney of non-obese diabetic mice through down-regulating gene expression ratios of pro-/anti-inflammatory and Th1/Th2 cytokines. Food Chem 2012; 131: 1263–71.
    1. Youn MJ, So HS, Cho HJ, Kim HJ, Kim Y, Lee JH, et al. Berberine, a natural product, combined with cisplatin enhanced apoptosis through a mitochondria/caspase-mediated pathway in HeLa cells. Biol Pharm Bull 2008; 31: 789–95.
    1. Yu M, Tong X, Qi B, Qu H, Dong S, Yu S, et al. Berberine enhances chemosensitivity to irinotecan in colon cancer via inhibition of NF-κB. Mol Med Rep 2014; 9: 249–54.
    1. Peng PL, Kuo WH, Tseng HC, Chou FP. Synergistic tumor-killing effect of radiation and berberine combined treatment in lung cancer: the contribution of autophagic cell death. Int J Radiat Oncol Biol Phys 2008; 70: 529–42.
    1. Lo KW, To KF, Huang DP. Focus on nasopharyngeal carcinoma. Cancer Cell 2004; 5: 423–8.
    1. Li CH, Wu DF, Ding Y, Zhao Y, Zhou KY, Xu DF. Berberine hydrochloride impact on physiological processes and modulation of Twist levels in nasopharyngeal carcinoma CNE-1 cells. Asian Pac J Cancer Prev 2014; 15: 1851–7.
    1. Li CH, Peng G, Li JY, Wang XJ, Xu DF, Zhou KY. Antitumor effect of berberine hydrochloride in the serum and plasma on nasopharyngeal carcinoma CNE-1 cell: A comparative study. J Med Postgra 2013; 26: 676–9.
    1. Cai YC, Xian LJ. Inhibition of berberine on growth of human nasopharyngeal carcinoma cells CNE-2 in vivo and in vitro. Zhongcaoyao 2006; 37: 1521–6.
    1. Tang FQ, Wang DS, Duan CJ, Huang DM, Wu Y, Chen Y, et al. Berberine inhibits metastasis of nasopharyngeal carcinoma 5-8F cells by targeting Rho kinase-mediated Ezrin phosphorylation at threonine 567. J Biol Chem 2009; 284: 27456–66.
    1. Liu SJ, Sun YM, Tian DF, He YC, Zeng L, He Y, et al. Down-regulated NM23-H1 expression is associated with intracranial invasion of nasopharyngeal carcinoma. Br J Cancer 2008; 98: 363–9.
    1. Ho Y, Tsao SW, Zeng M, Lui VW. STAT3 as a therapeutic target for Epstein-Barr virus (EBV)-associated nasopharyngeal carcinoma. Cancer Lett 2013; 330: 141–9.
    1. Lui VW, Wang EY, Ho Y, Hong B, Wong SC, Tao Q, et al. STAT3 activation contributes directly to Epstein-Barr virus-mediated invasiveness of nasopharyngeal cancer cells in vitro. Int J Cancer 2009; 125: 1884–93.
    1. Liu YP, Tan YN, Wang ZL, Zeng L, Lu ZX, Li LL, et al. Phosphorylation and nuclear translocation of STAT3 regulated by the Epstein-Barr virus latent membrane protein 1 in nasopharyngeal carcinoma. Int J Mol Med 2008; 21: 153–62.
    1. Tsang CM, Cheung YC, Lui VW. Berberine suppresses tumorigenicity and growth of nasopharyngeal carcinoma cells by inhibiting STAT3 activation induced by tumor associated fibroblasts. BMC Cancer 2013; 13: 619.
    1. Kuo CL, Chi CW, Liu TY. Modulation of apoptosis by berberine through inhibition of cyclooxygenase-2 and Mcl-1 expression in oral cancer cells. In Vivo 2005; 19: 247–52.
    1. Refaat A, Abd-Rabou A, Reda A. TRAIL combinations: The new “trail” for cancer therapy. Oncol Lett 2014; 7: 1327–32.
    1. Refaat A, Abdelhamed S, Yagita H, Inoue H, Yokoyama S, Hayakawa Y, et al. Berberine enhances tumor necrosis factor-related apoptosis-inducing ligand-mediated apoptosis in breast cancer. Oncol Lett 2013; 6: 840–4.
    1. Sha SM, Zhang YG, Xu B, Wang HH, Kong XY, Wu KC. Effect of berberine on cell proliferation and apoptosis in gastric carcinoma cells. Modern Oncol 2011; 19: 629–33.
    1. Lou JL, Qiu QY, Lin HS, Qi X, Pei YX, He XJ, et al. The effect of berberine on cell proliferation, cell cycle and CD44V6 expression in gastric cancer cell. Chin J Immunol 2004; 20: 315–7.
    1. Lai Y, Shen Y, Liu XH, Zhang Y, Zeng Y, Liu YF. Interleukin-8 induces the endothelial cell migration through the activation of phosphoinositide 3-kinase-Rac1/RhoA pathway. Int J Biol Sci 2011; 7: 782–91.
    1. Ning Y, Manegold PC, Hong YK, Zhang W, Pohl A, Lurje G, et al. Interleukin-8 is associated with proliferation, migration, angiogenesis and chemosensitivity in vitro and in vivo in colon cancer cell line models. Int J Cancer 2011; 128: 2038–49.
    1. Mantena SK, Sharma SD, Katiyar SK. Berberine, a natural product, induces G1-phase cell cycle arrest and caspase-3-dependent apoptosis in human prostate carcinoma cells. Mol Cancer Ther 2006; 5: 296–308.
    1. Eom KS, Hong JM, Youn MJ, Youn MJ, So HS, Park R, et al. Berberine induces G1 arrest and apoptosis in human glioblastoma T98G cells through mitochondrial/caspases pathway. Biol Pharm Bull 2008; 31: 558–62.
    1. Zhang XZ, Wang N, Liu DW, Tang GY, Zhang HY. Synergistic inhibitory effect of berberine and d-linmonene on human gastric carcinoma cell line MGC803. J Med Food 2014; 17: 955–62.
    1. Li GY, Yang LX, Wang YP. The study apoptosis of human gastric carcinoma BGC-823 cell induced by berberine. Pharmacol Clin Chin 2005; 21: 16–8.
    1. Chen G, Ke SD, Wang QG, Hu SM. Effect of berberine on proliferation and apoptosis of gastric adenocarcinoma cells AGS. Res Integr Tradit West Med 2011; 3: 4–7.
    1. Lin CC, Lin SY, Chung JG, Lin JP, Chen GY, Kao ST. Down-regulation of cyclin B1 and up-regulation of Wee1 by berberine promotes entry of leukemia cells into the G2/M-phase of the cell cycle. Anticancer Res 2006; 26: 1097–104.
    1. Serafim TL, Oliveira PJ, Sardao VA, Perkins E, Parke D, Holy J. Different concentrations of berberine result in distinct cellular localization patterns and cell cycle effects in a melanoma cell line. Cancer Chemother Pharmacol 2008; 61: 1007–18.
    1. Wang N, Feng Y, Zhu M, Tsang CM, Man K, Tong Y, et al. Berberine induces autophagic cell death and mitochondrial apoptosis in liver cancer cells: the cellular mechanism. J Cell Biochem 2010; 111: 1426–36.
    1. Dai JY, Dou KF, Wang CH, Zhao P, Lau WB, Tao L, et al. The interaction of HAb18G/CD147 with integrin alpha6beta1 and its implications for the invasion potential of human hepatoma cells. BMC Cancer 2009; 9: 337.
    1. Kuang YH, Chen X, Su J, Wu LS, Liao LQ, Li D, et al. RNA interference targeting the CD147 induces apoptosis of multi-drug resistant cancer cells related to XIAP depletion. Cancer Lett 2009; 276: 189–95.
    1. Hou Q, Tang X, Liu HQ, Tang J, Yang Y, Jing X, et al. Berberine induced cell death in human hepatoma cells in vitro by downregulating CD147. Cancer Sci 2011; 102: 1287–92.
    1. Ji C, Yang B, Yang YL, He SH, Miao DS, He L, et al. Exogenous cell-permeable C6 ceramide sensitizes multiple cancer cell lines to doxorubicin-induced apoptosis by promoting AMPK activation and Mtorc1 inhibition. Oncogene 2010; 29: 6557–68.
    1. Yang XL, Huang N. Berberine induces selective apoptosis through the AMPK-mediated mitochondrial/caspase pathway in hepatocellular. Mol Med Rep 2013; 8: 505–10.
    1. Wang XN, Han X, Xu LN, Yin LH, Xu YW, Qi Y, et al. Enhancement of apoptosis of human hepatocellular carcinoma SMMC-7721 cells through synergy of berberine and evodiamine. Phytomedicine 2008; 15: 106–8.
    1. Wang L, Wei D, Han X, Zhang W, Fan C, Zhang J, et al. The combinational effect of vincristine and berberine on growth inhibition and apoptosis induction in hepatoma cells. J Cell Biochem 2014; 115: 721–30.
    1. Wang RH. Pathological change of HEP-G2 cells induced by radioactive particle 125I combined with berberine. Chin J Curr Adv Gen Surg 2012; 15: 841–4.
    1. Hur JM, Hyun MS, Lim SY, Lee WY, Kim D. The combination of berberine and irradiation enhances anti-cancer effects via activation of p38 MAPK pathway and ROS generation in human hepatoma cells. J Cell Biochem 2009; 107: 955–64.
    1. Wang N, Feng Y, Lau EP, Tsang C, Ching Y, Man K, et al. F-actin reorganization and inactivation of rho signaling pathway involved in the inhibitory effect of Coptidis Rhizoma on hepatoma cell migration. Integr Cancer Ther 2010; 9: 354–64.
    1. Liu B, Wang GS, Yang J, Pan X, Yang Z, Zang L. Berberine inhibits human hepatoma cell invasion without cytotoxicity in healthy hepatocytes. PloS One 2011; 6: e21416.
    1. Ma C, Tang KL, Liu Q, Zhu R, Cao Z. Calmodulin as a potential target by which berberine induces cell cycle arrest in human hepatoma Bel7402 cells. Chem Biol Drug Des 2013; 81: 775–83.
    1. Choi MS, Yuk DY, Oh JH, Jung HY, Han SB, Moon DC, et al. Berberine inhibits human neuroblastoma cell growth through induction of p53-dependent apoptosis. Anticancer Res 2008; 28: 3777–84.
    1. Choi MS, Oh JH, Kim SM, Jung HY, Yoo HS, Lee YM, et al. Berberine inhibits p53-dependent cell growth through induction of apoptosis of prostate cancer cells. Int J Oncol 2009; 34: 1221–30.
    1. Wang N, Zhu MF, Wang XB, Tan HY, Tsao SW, Feng Y. Berberine-induced tumor suppressor p53 up-regulation gets involved in the regulatory network of MIR-23a in hepatocellular carcinoma. Biochim Biophys Acta 2014; 1839: 849–57.
    1. Cai YC, Xia Q, Luo RZ, Huang P, Sun Y, Shi Y, et al. Berberine inhibits the growth of human colorectal adenocarcinoma in vitro and in vivo. J Nat Med 2014; 68: 53–62.
    1. Chang JR, Wang JH, Kuang ZY, Deng RD, Gui SH. Regulation mechanism of berberine and evodiamine on cell cycle by miR-17-92 cluster in colorectal cancer HT29 cells. Pharmacol Clin Chin Mater Med 2014; 30: 19–22.
    1. Wu K, Yang JX, Zhou QX. Study on the effects of berberine on colon carcinoma in vitro. Chin Pharm 2010; 21: 1360–1.
    1. Wheeler DL, Dunn EF, Harari PM. Understanding resistance to EGFR inhibitors-impact on future treatment strategies. Nat Rev Clin Oncol 2010; 7: 493–507.
    1. Wang LH, Cao HL, Lu N, Liu L, Wang B, Hu T, et al. Berberine inhibits proliferation and down-regulates epidermal growth factor receptor through activation of Cb1 in colon tumor cells. PLoS One 2013; 8: e56666.
    1. Chidambara Murthy KN, Jayaprakasha GK, Patil BS. The natural alkaloid berberine targets multiple pathways to induce cell death in cultured human colon cancer cells. Eur J Pharmacol 2012; 688: 14–21.
    1. Wang LH, Liu LP, Shi Y, Cao H, Chaturvedi R, Calcutt MW, et al. Berberine induces caspase-independent cell death in colon tumor cells through activation of apoptosis-inducing factor. PLoS One 2012; 7: e36418.
    1. Wu K, Yang JX, Zhou QX. Preventive effect of berberine on experimental colon cancer and relationship with cyclooxygenase-2 expression. Chin Chin Mat Med 2010; 35: 2768–72.
    1. Kaur J, Sanyal SN. Modulation of inflammatory changes in early stages of colon cancer through activation of PPARgamma by diclofenac. Eur J Cancer Prev 2010; 19: 319–27.
    1. Dionne S, Levy E, Levesque D, Seidman EG. PPARgamma ligand 15-deoxy-delta 12,14-prostaglandin J2 sensitizes human colon carcinoma cells to TWEAK-induced apoptosis. Anticancer Res 2010; 30: 157–66.
    1. Wu K, He BC, Zhou QX. Preventive and curative effects of berberine on experimental colon cancer in rats and its relationship to expression of peroxisome proliferator-activated receptor γ. Chin J Biologicals 2011; 24: 952–6.
    1. Thirupurasundari CJ, Padmini R, Devaraj SN. Effect of berberine on the antioxidant status, ultrastructural modifications and protein bound carbohydrates in azoxymethane-induced colon cancer in rats. Chem Biol Interact 2008; 177: 190–5.
    1. Lee DU, Kang YJ, Park MK, Lee YS, Seo HG, Kim TS, et al. Effects of 13-alkyl-substituted berberine alkaloids on the expression of COX-II, TNF-alpha, iNOS, and IL-12 production in LPS-stimulated macrophages. Life Sci 2003; 73: 1401–12.
    1. Zhao WL, Li YB, Wang YX, Wang YX, Bi CW, Shao RG, et al. Synthesis and structure-activity relationship of 13-substituted berberine derivatives as anti-cancer agents. Chin Med Herald 2013; 10: 17–20.
    1. Ding YP, Ye XL, Zhu JY, Zhu XK, Li XG. Synthesis of 8-alkyl-13-bromo-berberine hydrochloride derivatives and their effect on proliferation of human HepG2 cell line. Chin Tradit Herb Drugs 2010; 41: 1765–70.
    1. Li Q, Zhang L, Zu Y, Liu T, Zhang B, He W. Generation of reactive oxygen species by a novel berberine-bile acid analog mediates apoptosis in hepatocarcinoma SMMC-7721 cells. Biochem Biophys Res Commun 2013; 433: 432–7.
    1. Bi CW, Zhang CX, Li YB, Zhao WL, Shao RG, Mei L, et al. Synthesis and structure-activity relationship of cycloberberine as anti-cancer agent. Acta Pharm Sin 2013; 48: 1800–6.
    1. Bhowmik D, Hossain M, Buzzetti F, D'Auria R, Lombardi P, Kumar GS. Biophysical studies on the effect of the 13 position substitution of the anticancer alkaloid berberine on its DNA binding. J Phys Chem 2012; 116: 2314–24.
    1. Jin X, Yan L, Li HJ, Wang RL, Hu ZL, Jiang YY, et al. Novel triazolyl berberine derivatives prepared via CuAAC click chemistry: synthesis, anticancer activity and structure-activity relationships. Anticancer Agents Med Chem 2015; 15: 89–98.
    1. Li YB, Zhao WL, Wang YX, Zhang CX, Jiang JD, Bi CW, et al. Discovery, synthesis and biological evaluation of cycloprotoberberine derivatives as potential antitumor agents. Eur J Med Chem 2013; 68: 463–72.
    1. Guamán Ortiz LM, Tillhon M, Parks M, Dutto I, Prosperi E, Savio M, et al. Multiple effects of berberine derivatives on colon cancer cells. BioMed Res Int 2014; 2014: 924585.
    1. Guamán Ortiz LM, Croce AL, Aredia F, Sapienza S, Fiorillo G, Syeda TM, et al. Effect of new berberine derivatives on colon cancer cells. Acta Biochim Biophys Sin 2015; 47: 824–33.
    1. Min YD, Kwon HC, Yang MC, Lee KH, Choi SU, Lee KR. Isolation of limonoids and alkaloids from Phellodendron amurense and their multidrug resistance (MDR) reversal activity. Acta Pharm Sin 2007; 30: 58–63.
    1. Li B, Wang GH, Yang M, Xu ZJ, Zeng BB, Wang HY, et al. Overman rearrangement and PomeranzeFritsch reaction for the synthesis of benzoazepinoisoquinolones to discover novel antitumor agents. Eur J Med Chem 2013; 70: 677–84.
    1. Li B, Wang GH, Xu ZJ, Zhang Y, Haung XG, Zeng BB, et al. Discovery of N-substituted 3-arylisoquinolone derivatives as antitumor agents originating from O-substituted 3-arylisoquinolines via [2,3] or [3,3] rearrangement. Eur J Med Chem 2014; 77: 204–10.

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