粉样纤维结构将CHCHD10和CHCHD2与神经退行联系起来
Guohua Lv1, Nicole M Sayles2, Yun Huang3,4
1Department of Biochemistry, Weill Cornell Medicine, 1300 York Avenue, New York, NY 10021, United States.
bioRxiv : the preprint server for biology
|August 2, 2024
概括
CHCHD10蛋白质的N端异常域形成了粉样纤维. 与前性痴呆和ALS相关的突变破坏了这些纤维,这表明神经退行症的作用.
科学领域:
- 神经科学是一个神经科学.
- 结构生物学 结构生物学
- 分子生物学分子生物学
背景情况:
- CHCHD10蛋白质突变与罕见的前性痴呆症 (FTD) 和肌缩侧面硬化症 (ALS) 有关.
- 观察到CHCHD10蛋白在与这些神经退行性疾病相关的小鼠模型中聚合.
研究的目的:
- 为了研究CHCHD10聚合的结构基础.
- 确定与疾病相关的突变如何影响CHCHD10纤维素的形成和稳定性.
主要方法:
- 使用冷电子显微镜 (cryoEM) 来确定CHCHD10粉样纤维的结构.
- 与疾病相关突变相关的野生型 (WT) 和突变CHCHD10纤维结构的分析.
主要成果:
- CHCHD10的内在无序的N端域形成稳定的粉样纤维.
- 冷EM结构揭示了野生型CHCHD10纤维的原子细节.
- 疾病相关的CHCHD10突变与野生型纤维结构不相容.
- CHCHD10和CHCHD2之间的序列差异允许它们的共同聚合.
结论:
- CHCHD10粉样纤维的结构为FTD和ALS的分子机制提供了洞察力.
- 突变与野生型纤维结构的不相容解释了它们的病原性作用.
- CHCHD10和CHCHD2共同聚合的能力凸显了神经退行症中潜在的共享途径.
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