帕瑟诺利德通过抑制ZNF207/BUGZ促进的kinetochore-microtubule附着来破坏线粒分裂
Susana Eibes1, R Bhagya Lakshmi1, Girish Rajendraprasad1
1Cell Division and Cytoskeleton, Danish Cancer Institute, Copenhagen, Denmark.
The EMBO journal
|May 27, 2025
概括
帕特诺利德是一种天然的抗癌化合物,通过与kinetochore中的BUGZ蛋白结合来破坏细胞分裂. 这阻止了染色体正确地附着在线索上,揭示了一种新的抗真菌机制.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 帕瑟诺利德是一种天然化合物,具有已证明的抗癌特性.
- 它的抗真菌活性和细胞分裂中的精确作用机制仍然不完全理解.
- 之前的研究在很大程度上忽视了其在线粒分裂中的作用,阻碍了充分理解其治疗潜力.
研究的目的:
- 阐明帕瑟诺利德影响线粒分裂的特定机制.
- 为了研究细胞分裂期间的帕瑟诺利德的分子标.
- 为了探索超出其已知的活动的parthenolide的抗菌素潜力.
主要方法:
- 利用点击化学技术进行目标识别.
- 采用定量质谱法来分析蛋白相互作用.
- 进行细胞生物学实验,观察对线粒分裂的影响.
主要成果:
- 帕瑟诺利德在细胞环境中不会直接向微管.
- 鉴定ZNF207/BUGZ,一个kinetochore蛋白质,作为一个直接的结合伙伴的parthenolide.
- 证明帕瑟诺利德与BUGZ的Cys54有共性结合,抑制了基内托科尔-微小管附着.
结论:
- 帕特诺利德的抗癌活性部分是由其新型抗菌素功能介导的.
- 结合BUGZ破坏了必不可少的kinetochore-microtubule附件,这对于精确的染色体分离至关重要.
- 这一发现扩大了对帕瑟诺利德的作用机制及其作为抗癌剂的潜力的理解.
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