向与胺相关蛋白1中的全位,以抑制Fis1介导的线粒体功能障碍
Luis Rios1, Suman Pokhrel1, Sin-Jin Li2,3
1Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, CA, USA.
Nature communications
|July 19, 2023
概括
研究人员确定了SC9,一种通过准Drp1-Fis1相互作用来抑制病态线粒体裂变的小分子. 这一发现为各种疾病提供了潜在的治疗策略,而不会破坏细胞的基本功能.
科学领域:
- 细胞生物学 细胞生物学
- 生物化学 生物化学
- 药理学 药理学是指药理学的学科.
背景情况:
- 动氨酸相关蛋白1 (Drp1) 是一种GTPase,对线粒体分裂至关重要,涉及正常细胞过程和疾病.
- 通过Drp1-Fis1相互作用介导的病态线粒体裂变,在神经退行,缺血和败血症等条件下导致细胞死亡.
- 像P110这样的现有的抑制剂显示出有前途,但具有药理动力学限制.
研究的目的:
- 通过准Drp1.1,确定模仿P110治疗效益的小分子抑制剂.
- 为了发现选择性抑制病理Drp1-Fis1相互作用的化合物,同时保持生理线粒体裂变.
主要方法:
- P110在Drp1上的结合部位被映射到交换机I相邻的林 (SWAG).
- 使用选试验来识别与SWAG区域结合的小分子.
- 鉴定到的小分子的疗效在细胞模型和内毒性病的小鼠模型中进行了测试.
主要成果:
- 小分子SC9被确定为Drp1 SWAG区域的结合剂.
- SC9在细胞模型和内毒性病的小鼠模型中显示出降低病理的有效性,模仿P110的好处.
- 在不影响生理线粒体分裂的情况下,SC9可选择性地抑制病态Drp1-Fis1相互作用.
结论:
- 针对Drp1 SWAG的小分子,如SC9,代表了对Drp1介导病理的有希望的治疗途径.
- 这种方法可能提供一种策略,以减轻因线粒体过度分裂而导致的疾病.
- 这些已识别的化合物有可能应用于涉及其他GTPase家族成员的病理.
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