开发基于palbociclib的新型CDK4/6抑制剂,探索守门员背后的后口袋
Lina Li1, Fengquan Chen2, Mengzhe Li2
1Department of Pharmacy, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, People's Republic of China.
与palbociclib.m相比,一种新型化合物17m显示了对乳腺癌细胞的增强CDK4/6抑制和抗增殖作用. 这种选择性抑制剂表现出改善的代谢稳定性,提供了一个有前途的新疗法途径.
科学领域:
- 药用化学 医学化学
- 分子生物学分子生物学
- 在瘤学瘤学.
背景情况:
- 循环素依赖性激酶4和6 (CDK4/6) 抑制剂与内分泌治疗相结合,是激素受体阳性,人体表皮生长因子受体2-阴性 (HR+/HER2-) 乳腺癌的标准治疗方法.
- 开发具有提高疗效和选择性的新型CDK4/6抑制剂仍然是乳腺癌治疗的关键目标.
研究的目的:
- 设计和合成新的palbociclib衍生物作为强效和选择性的CDK4/6抑制剂.
- 评估合成化合物的体外抗增殖活性,细胞循环停止能力和代谢稳定性.
主要方法:
- 基于结构的药物设计被用来创建一系列新的palbociclib衍生物.
- 进行了体外测试,以评估CDK4/6抑制活性,对MDA-MB-453细胞的抗增殖作用,以及对其他循环素依赖激酶的选择性.
- 西部斑点分析被用来通过检查酸化Rb水平来确认细胞内CDK4/6抑制.
- 用小鼠肝脏显微体来评估代谢稳定性,以确定半衰期.
主要成果:
- 化合物17m对MDA-MB-453细胞系表现出比已批准的药物palbociclib.lib更强大的CDK4/6抑制和抗增殖活性.
- 化合物17m对CDK4/6比其他CDK家族成员 (CDK1,CDK2,CDK3,CDK5,CDK7,CDK9) 具有显著的选择性.
- 17m在MDA-MB-453细胞中有效诱导G1细胞周期停止,并且与小鼠肝脏显微体中的palbociclib相比,显示出更高的代谢稳定性 (更长的半衰期).
结论:
- 化合物17m是一种有前途的新型CDK4/6抑制剂,与palbociclib相比,具有更高的功效,选择性和代谢稳定性.
- 这些发现支持进一步调查17m化合物作为HR+/HER2-乳腺癌的潜在治疗剂.
更多相关视频
06:00Through the Looking Glass: Time-lapse Microscopy and Longitudinal Tracking of Single Cells to Study Anti-cancer Therapeutics
Published on: May 14, 2016
08:49Identification of Mediators of T-cell Receptor Signaling via the Screening of Chemical Inhibitor Libraries
Published on: January 22, 2019
相关概念视频
Inhibition of Cdk Activity
M-Cdk Drives Transition Into Mitosis
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
Positive Regulator Molecules
Targeted Cancer Therapies
There are several types of targeted therapies against...
Anaphase Promoting Complex
Combination Therapies and Personalized Medicine
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
