Triazole Bridged Flavonoid Dimers as Potent, Nontoxic, and Highly Selective Breast Cancer Resistance Protein (BCRP/ABCG2) Inhibitors
作者:Xuezhen Zhu、Iris L. K. Wong、Kin-Fai Chan、Jiahua Cui、Man Chun Law、Tsz Cheung Chong、Xuesen Hu、Larry M. C. Chow、Tak Hang Chan
DOI:10.1021/acs.jmedchem.9b00963
日期:2019.9.26
identifies potent, nontoxic, and highly selective BCRP inhibitors. A homodimer, Ac22(Az8)2, with m-methoxycarbonylbenzyloxy substitution at C-3 of the flavone moieties and a bis-triazole-containing linker (21 atoms between the two flavones) showed low toxicity (IC50 toward L929, 3T3, and HFF-1 > 100 μM), potent BCRP-inhibitory activity (EC50 = 1–2 nM), and high BCRP selectivity (BCRP selectivity over MRP1
本工作描述了各种由三唑桥连的类黄酮二聚体的合成,并鉴定了有效,无毒和高选择性的BCRP抑制剂。同二聚体,AC22(AZ8)2,与米在C-3的黄酮部分的-methoxycarbonylbenzyloxy取代和双-含三唑的接头(两个黄酮之间21个原子)显示出低毒性(IC 50朝向L929,3T3,和HFF-1> 100μM),有效的BCRP抑制活性(EC 50 = 1-2 nM)和高的BCRP选择性(相对于MRP1的BCRP选择性和P-gp> 455-909)。Ac22(Az8)2抑制BCRP-ATPase活性,阻断BCRP的药物外流活性,提高细胞内药物的积累,最终恢复BCRP过表达细胞的药物敏感性。它不会下调表面BCRP蛋白的表达来增强药物保留。因此,Ac22(Az8)2和类似的类黄酮二聚体似乎是有前途的候选者,可以进一步发展成联合疗法以克服具有BCRP过表达的MDR癌症。