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缺陷的Lamtor5通过放松v-ATPase和溶酶体酸化的调节导致自身免疫
Wei Zhang1, Zhou Sha1, Yunzhe Tang1
1School of Medicine, Nanjing University of Chinese Medicine, Nanjing, 210046, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|April 19, 2024
概括
晚期内/溶酶体适配体,MAPK和mTOR激活器5 (Lamtor5) 缺乏会损害溶酶体功能和mTORC1激活,导致全身性红斑狼 (SLE) 和自身免疫性疾病.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 分子医学是分子医学.
背景情况:
- lysosome 功能障碍与自身免疫性疾病有关,但调节机制尚不清楚.
- 晚期内体/溶酶体适配体,MAPK和mTOR激活器5 (Lamtor5) 在免疫平衡中的作用尚不清楚.
研究的目的:
- 为了研究Lamtor5在免疫恒温中的生理作用.
- 阐明Lamtor5调节 lysosome功能和mTORC1信号传递的机制.
- 为了确定Lamtor5是否与系统性红斑狼 (SLE) 有关.
主要方法:
- 从SLE患者的外周血液单核细胞 (PBMC) 中分析Lamtor5水平.
- 产生和分析骨髓 Lamtor5 废除的小鼠.
- 在巨细胞和PBMC中评估溶酶体功能,mTORC1激活和自身溶酶体通路.
- 研究Lamtor5和真空H+-ATPase (v-ATPase) 之间的物理关联.
主要成果:
- 在SLE患者的PBMC中,Lamtor5水平下降.
- 在小鼠中,骨髓 Lamtor5 切除会导致类似于 SLE 的表现.
- 拉姆托5缺乏通过影响v-ATPase组合来损害溶解体酸化,并削弱mTORC1的激活.
- 自解酶体通路被削弱,而在缺乏Lamtor5的细胞中,炎症反应是异常的.
结论:
- 兰特5通过整合v-ATPase活性, lysosome功能和mTOR信号传递,对免疫平衡至关重要.
- 拉姆托5缺乏症有助于SLE的发病.
- 拉姆托5代表了SLE和其他自身免疫性疾病的潜在治疗标.
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