CRIF1-CDK2接口抑制剂:一种前所未有的细胞辐射敏感性调节策略
Qian Ran1, Yang Xiang1, Preyesh Stephen2
1Department of Blood Transfusion, Irradiation Biology Laboratory , Xinqiao Hospital , Chongqing , 400037 , China.
Journal of the American Chemical Society
|January 18, 2019
概括
针对CRIF1- CDK2相互作用的新药候选药物可以选择性地抑制骨髓瘤细胞的增殖并增强放射敏感性. 这种方法克服了克林依赖激酶 (CDK) 针对癌症治疗的选择性问题.
科学领域:
- 癌症学
- 分子生物学
- 药物发现
背景情况:
- 循环依赖激酶 (CDK) 是细胞循环的关键调节剂,已被确立为癌症标.
- CDK 抑制剂经常面临选择性挑战,导致治疗失败.
- 通过与CDK2的相互作用,CR6相互作用因子1 (CRIF1) 对细胞周期产生负面调节.
研究的目的:
- 识别针对CRIF1-CDK2相互作用接口的新型小分子.
- 在骨肉瘤 (OS) 模型中评估这些抑制剂的疗效和选择性.
- 评估这些抑制剂在OS细胞中增强辐射敏感性的潜力.
主要方法:
- 在CRIF1-CDK2交互界面的形识别.
- 针对CRIF1进行大型复合库的虚拟选
- 使用OS细胞系和骨介质干细胞 (BMSC) 进行细胞增殖测定.
- 结合性亲和性研究和G2/M停止和亡诱导的评估.
- 与电离辐射 (IR) 联合治疗的评估.
主要成果:
- 四种化合物可以选择性地抑制OS细胞的增殖,而不会影响BMSC.
- 这些抑制剂对CRIF1具有显著的结合 afinity.
- 用IR和抑制剂的联合治疗显著增强了瘤生长的抑制 (从19. 9%增加到59. 6%).
- 这些抑制剂促进了OS细胞的G2/ M停止和亡,与CDK2过度激活和化变化有关.
- 克里夫1抗击效应模仿了接口抑制剂的作用.
结论:
- 已经确定了针对CRIF1- CDK2相互作用的新型分子.
- 这些化合物在癌症治疗中提供了选择性的CDK向方法.
- 鉴定到的抑制剂增强了骨肉瘤细胞的辐射敏感性,从而提出了新的治疗策略.
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