α-Synuclein phase separation and amyloid aggregation are modulated by C-terminal truncations

α-Synuclein phase separation and amyloid aggregation are modulated by C-terminal truncations
复制标题

α-突触核蛋白相分离和淀粉样蛋白聚集由 C 端截短调节

DOI:
10.1002/1873-3468.14361
复制
发表时间:
2022-05-06
期刊:
影响因子:
3.5
通讯作者:
Liu, Yinghui
Liu, Yinghui
中科院分区:
生物学3区
文献类型:
--
作者:
Huang, Shuai;Mo, Xiaoli;Liu, Yinghui

文献摘要

被引文献

相似文献

α-突触核蛋白 (α-Syn) 的聚集是帕金森病 (PD) 的一个关键病理标志。 α-Syn 经过液-液相分离 (LLPS) 以驱动淀粉样蛋白聚集。 α-Syn 的 LLPS 是如何调节的仍然很大程度上未知。在这里,我们发现 C 端区域通过静电相互作用调节 α-Syn 相分离。野生型 (WT) 和 PD 疾病相关的截短 α-Syn 可以在冷凝物中共存。截短的α-Syn可以显着促进WT α-Syn相分离。进一步的研究表明,截短的 α-Syn 通过调节相分离加速了 WT α-Syn 转化为淀粉样蛋白聚集体。总之,我们的研究结果揭示了 C 端结构域在 α-Syn LLPS 中的作用,并为理解截短的 α-Syn 在 PD 病理学中的机制铺平了道路。
The aggregation of alpha-synuclein (alpha-Syn) is a key pathological hallmark of Parkinson's disease (PD). alpha-Syn undergoes liquid-liquid phase separation (LLPS) to drive amyloid aggregation. How the LLPS of alpha-Syn is regulated remains largely unknown. Here, we discovered that the C-terminal region modulates alpha-Syn phase separation through electrostatic interactions. The wild-type (WT) and PD disease-related truncated alpha-Syn can co-exist in the condensates. The truncated alpha-Syn could dramatically promote WT alpha-Syn phase separation. Further studies demonstrated that the truncated alpha-Syn accelerated WT alpha-Syn turning to amyloid aggregates by modulation of phase separation. Together, our findings disclose the role of the C-terminal domain in the LLPS of alpha-Syn and pave the path for understanding the mechanism of truncated alpha-Syn in PD pathology.