需要SEL1L-HRD1相互作用才能形成一个功能性的HRD1 ERAD复合体
Liangguang Leo Lin1, Huilun Helen Wang1, Brent Pederson2
1Department of Molecular Physiology and Biological Physics, University of Virginia, School of Medicine, Charlottesville, VA, 22903, USA.
Nature communications
|February 16, 2024
概括
一种致病性SEL1L突变通过破坏ERAD复合体,在小鼠中引起部分胚胎致死性和动脉缩. 这突出了SEL1L的特点.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- SEL1L-HRD1复合体是内质网膜 (ER) 相关降解 (ERAD) 的保护途径.
- 对SEL1L在ERAD复合体形成中的作用及其在哺乳动物中的生理相关性的体内证据有限.
研究的目的:
- 在哺乳动物中研究SEL1L-HRD1复合物的体内功能.
- 阐明SEL1L介导ERAD复合体形成的分子机制及其与疾病的联系.
主要方法:
- 产生和分析携带致病性SEL1L变体 (p.Ser658Pro) 的小鼠.
- 生物化学测试以评估蛋白质稳定性和蛋白质与蛋白质相互作用.
- 蛋白质组分析以确定SEL1L和HRD1相互作用体.
主要成果:
- 在小鼠中,SEL1LS658P变异导致部分胚胎致死性,发育延迟和小脑动.
- 这种变体降低了SEL1L蛋白的稳定性,并减弱了SEL1L-HRD1相互作用.
- SEL1L对于招募UBE2J1和DERLIN到HRD1至关重要,形成一个功能性的HRD1ERAD综合体.
结论:
- SEL1L-HRD1 ERAD通路对于哺乳动物的发育和神经功能至关重要.
- 对于组装一个功能性的HRD1 ERAD复合体,SEL1L是不可或缺的.
- SEL1L-HRD1 ERAD功能障碍与神经系统疾病有关.
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