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BLOC1S1 减弱 B. Melitensis 16M 通过 TDP-43 的空间限制来触发 LPS 触发的自

Shicheng Wan^1,2, Miao Han¹, Mengfei Zhang^1,3

¹College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|September 12, 2025

概括

溶酶体相关有机体复合体1亚单元1 (BLOC1S1) 的生物发生通过隔离TDP-43抑制布鲁塞拉自,而布鲁塞拉LPS通过AMPK信号诱导自. 这揭示了宿主-病原体相互作用的双重机制.

科学领域:

细胞生物学细胞生物学
免疫学免疫学免疫学
微生物学微生物学

背景情况:

溶酶体相关细胞器官复合体1亚单元1 (BLOC1S1) 的生物发生已知具有抗布鲁塞拉效应.
BLOC1S1对布鲁塞拉诱导的自的影响仍未得到研究.
羊精子干细胞 (mGSCs-I-SB) 作为细胞模型.

研究的目的:

研究布鲁塞拉脂多糖 (LPS) 和BLOC1S1在mGSCs-I-SB.中调节自的相互作用.
阐明BLOC1S1对Brucella自的作用背后的分子机制.

主要方法:

使用了来自B. melitensis 16M和大肠杆菌的LPS.
评估了自标志物 (LC3B-II/LC3B-I比率,通过TEM形成自溶酶体).
进行了RNA测序,蛋白质组分析,共免疫沉和亚细胞局部化研究.

主要成果:

B. melitensis 16M LPS诱导AMPK依赖的自,与大肠杆菌LPS不同.
BLOC1S1过度表达减弱了自和减少了自解酶体的形成.
BLOC1S1重新编程了溶酶体路径和线粒体代谢,在细胞质中隔离TDP-43,以抑制ATG7mRNA的稳定性.

结论:

B. melitensis 16M LPS驱动AMPK依赖的自,而BLOC1S1通过TDP-43细胞质封存抑制它.
这项研究阐明了布鲁塞拉-宿主相互作用中的双重调节机制.
BLOC1S1已经成为一种潜在的治疗菌病和TDP-43相关疾病的治疗点.

关键词:

布鲁塞拉菌种群 (Brucella sppp) 是一种 BLOC1S1S1 的一个区块.在LPS中使用LPS.在TDP-43中.自自是自的过程.

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