容易聚合的α-synuclein蛋白质形式和失调的分子特征在synucleinopathy患者的虫形尾
Ehraz Anis1, Saima Zameer1, Joshua Wierenga1
1Center for Neurodegenerative Science, Van Andel Research Institute; Grand Rapids, MI, USA.
bioRxiv : the preprint server for biology
|November 24, 2025
概括
像帕金森病这样的同核蛋白病变可能起源于尾. 附录中的α-synuclein聚合,由α-synuclein种子放大试验 (alpha-synuclein-SAA) 证实,表明肠道参与神经退行.
科学领域:
- 神经科学是一个神经科学.
- 胃肠病学 胃肠病学
- 分子生物学分子生物学
背景情况:
- 包括帕金森病在内的同核蛋白病变涉及α-synuclein聚合.
- 肠道,特别是尾,越来越多地涉及到同核蛋白病变的发展.
- 在尾中α-synuclein聚合的机制尚不清楚.
研究的目的:
- 研究尾组织中的α-synuclein聚合.
- 通过基因组和表观基因组分析,探索聚合的分子基础.
- 在附录中描述alpha-synuclein蛋白质形式及其聚合倾向.
主要方法:
- 在死后的尾组织上进行的α-synuclein种子放大试验 (alpha-synuclein-SAA).
- 附录组织的总RNA测序和DNA甲基化分析.
- 顶向下质谱 (TD-MS) 和α-synuclein蛋白质形式的in silico建模.
主要成果:
- 在68.75%的synucleinopathy患者的尾样本中,α-synuclein-SAA呈阳性.
- 基因组分析揭示了与蛋白质折叠,免疫力和纤毛功能相关的改变基因表达.
- TD-MS确定了具有更高聚合倾向的独特尾α-synuclein蛋白质形式.
结论:
- 附录显示了对α-synuclein的亲聚合环境.
- 附录中的α-synuclein异质保护体可能会导致synucleinopathy的发展.
- 这些发现支持了在帕金森病的发病过程中肠-大脑轴理论.
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