Structure-Based Design and Synthesis of N-Substituted 3-Amino-β-Carboline Derivatives as Potent αβ-Tubulin Degradation Agents
作者:Yong Li、Yan Liu、Zejiang Zhu、Wei Yan、Chufeng Zhang、Zhuang Yang、Peng Bai、Minghai Tang、Mingsong Shi、Wen He、Suhong Fu、Jiang Liu、Kai Han、Jiewen Li、Lixin Xie、Haoyu Ye、Jianhong Yang、Lijuan Chen
DOI:10.1021/acs.jmedchem.1c02159
日期:2022.2.10
So far, relatively few small molecules have been reported to promote tubulin degradation. Our previous studies have found that compound 2, a noncovalent colchicine-site ligand, was capable of promoting αβ-tubulin degradation. To further improve its antiproliferative activity, 66 derivatives or analogues of 2 were designed and synthesized based on 2-tubulin cocrystal structure. Among them, 12b displayed
迄今为止,促进微管蛋白降解的小分子报道相对较少。我们之前的研究发现化合物2是一种非共价秋水仙碱位点配体,能够促进 αβ-微管蛋白降解。为了进一步提高其抗增殖活性,基于2-微管蛋白共晶结构,设计合成了66种2的衍生物或类似物。其中, 12b显示出针对多种肿瘤细胞的纳摩尔效力,包括紫杉醇和阿霉素耐药细胞系。 12b与秋水仙碱位点结合,并通过泛素-蛋白酶体途径以浓度依赖性方式促进 αβ-微管蛋白降解。 X射线晶体结构显示12b的结合方式与2类似,但B环的构象略有变化,这导致12b与周围残基有更好的相互作用。 12b在 A2780S(紫杉醇敏感)和 A2780T(紫杉醇耐药)卵巢异种移植模型上,静脉注射 40 mg/kg(每周 3 次)剂量均能有效抑制肿瘤生长,TGI 分别为 92.42 和 79.75%,无明显副作用。效应,支持其作为肿瘤治疗化合物的潜在用途。