需要p97/VCP进行侵袭体的断片自
Maria Körner1, Paul Müller1, Hirak Das2
1Biocenter, Chair of Biochemistry I, University of Würzburg, Würzburg, Germany.
Nature communications
|May 7, 2025
概括
细胞通过选择性自清除有毒的蛋白质聚合物,称为侵略体. 在p97/VCP unfoldase对于侵略性分解和随后的清除至关重要,防止神经退行性疾病链接.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 神经科学是一个神经科学.
背景情况:
- 当蛋白质质量控制 (PQC) 系统被压倒时,甲状动物细胞形成攻击体来隔离蛋白质.
- 侵略性细胞的形成和清除对于蛋白质稳定至关重要,并且与神经退行性疾病有关.
- 攻击性清除机制仍然不太了解.
研究的目的:
- 研究负责清除含有内源蛋白质的侵略体的途径.
- 为了确定参与激进分解和降解的关键分子参与者.
- 为了阐明p97/VCP unfoldase在攻击性细胞清除中的作用.
主要方法:
- 接近性依赖生物化 (Proximitome) 分析攻击性细胞.
- 调查TAX1BP1,Hsp70,26S蛋白酶和p97/VCP在攻击性细胞清除中的作用.
- 利用p97/VCP的药理抑制来评估其在攻击性分解和自中所需的作用.
主要成果:
- 侵略体通过选择性自取决于货物受体TAX1BP1.1被清除.
- Hsp70和p97/VCP (具有辅因子UFD1-NPL4,FAF1) 对于攻击性分解是关键的,而26S蛋白质组则不是.
- p97/VCP活动对于侵略性分解和随后的自细胞吞是必不可少的,即使存在其他侵蚀性因素.
结论:
- 由TAX1BP1调解的选择性自是侵袭性细胞清除的主要途径.
- 通过去除无处不在的客户端,p97/VCP unfoldase 在分解侵略体中发挥着至关重要的作用.
- 干扰p97/VCP功能会损害侵袭性解体和自,突出其在防止蛋白质稳定性崩和潜在神经退行症方面的重要性.
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