Discovery of Novel Benzimidazole and Indazole Analogues as Tubulin Polymerization Inhibitors with Potent Anticancer Activities
作者:Yichang Ren、Yuxi Wang、Gang Li、Zherong Zhang、Lingling Ma、Binbin Cheng、Jianjun Chen
DOI:10.1021/acs.jmedchem.0c01837
日期:2021.4.22
Novel indazole and benzimidazole analogues were designed and synthesized as tubulin inhibitors with potent antiproliferative activities. Among them, compound 12b exhibited the strongest inhibitory effects on the growth of cancer cells with an average IC50 value of 50 nM, slightly better than colchicine. 12b exhibited nearly equal potency against both, a paclitaxel-resistant cancer cell line (A2780/T
设计并合成了新型吲唑和苯并咪唑类似物,作为具有有效抗增殖活性的微管蛋白抑制剂。其中,化合物12b对癌细胞的生长表现出最强的抑制作用,平均IC 50值为50 nM,略高于秋水仙碱。12b对紫杉醇抗性癌细胞系(A2780 / T,IC 50 = 9.7 nM)和相应的亲代细胞系(A2780S,IC 50 = 6.2 nM)表现出几乎相等的效力,因此在体外有效克服了对紫杉醇的抗性。12b的晶体结构通过X射线晶体学分析,将与微管蛋白复合的化合物拆分至2.45Å分辨率,并确认其直接结合至秋水仙碱位点。此外,12b在黑素瘤肿瘤模型中显示出显着的体内抗肿瘤功效,肿瘤生长抑制率分别为78.70%(15 mg / kg)和84.32%(30 mg / kg)。总的来说,这项工作表明12b是一种有前途的铅化合物,作为潜在的抗癌剂值得进一步研究。