Discovery of a simplified deguelin analog as an HSP90 C-terminal inhibitor for HER2-positive breast cancer
作者:Cong-Truong Nguyen、Minh Thanh La、Jihyae Ann、Gibeom Nam、Hyun-Ju Park、Jung Min Park、Yoon-Jae Kim、Ji Young Kim、Jae Hong Seo、Jeewoo Lee
DOI:10.1016/j.bmcl.2021.128134
日期:2021.8
cells with little cytotoxicity to normal cells. Mechanistic studies of compound 37 carried out by HSP90α C-terminal inhibitor screening, the induction of the heat shock response and downregulation of HSP90 client proteins indicated that the antitumor activity of 37 in breast cancer cells could be attributed to the destabilization and inactivation of HSP90 client proteins by the binding of 37 to the C-terminal
设计为热休克蛋白 90 (HSP90) C 末端抑制剂的 deguelin C 环截短支架的一系列O取代类似物被研究作为抗人表皮生长因子受体 2 (HER2) 阳性乳腺癌的新型抗肿瘤剂. 在合成的化合物中,化合物37对曲妥珠单抗敏感和曲妥珠单抗耐药的乳腺癌细胞均显示出显着的抑制作用,对正常细胞的细胞毒性很小。通过HSP90α C-末端抑制剂筛选、热休克反应的诱导和HSP90客户蛋白的下调对化合物37进行的机理研究表明37的抗肿瘤活性乳腺癌细胞中的37与 HSP90 的 C 端结构域结合,导致 HSP90 客户蛋白的不稳定和失活。化合物37与 HSP90 同源模型的分子对接研究表明,其S异构体与 C 端结构域的 ATP 结合位点非常吻合,形成关键相互作用。