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暂时的金黄色葡萄球菌感染通过ATF-3/CHOP通道促进持续的椎间盘退化
Lemeng Ren1, Yichen Li1, Jianlin Yin2
1Department of Orthopedics, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 200000 Shanghai, China.
Frontiers in bioscience (Landmark edition)
|August 6, 2025
概括
过渡性金黄色葡萄球菌感染通过激活ATF3-CHOP通路,导致持续的细胞内膜网膜应激,导致逐渐的椎间盘退化. 准这种途径可能会减轻磁盘退化.
科学领域:
- 生物医学研究的研究.
- 细胞生物学 细胞生物学
- 分子病理学分子病理学
背景情况:
- 金色葡萄球菌感染是椎间盘退化 (IDD) 的重要因素.
- 细胞内膜网膜应激 (ERS) 是一种由细菌感染影响的关键细胞机制.
- 了解ERS在S. aureus引起的IDD中的作用对于开发治疗策略至关重要.
研究的目的:
- 为了研究细胞内膜网膜应激 (ERS) 在黄金杆菌诱导的椎间盘退化 (IDD) 中的作用.
- 阐明S. aureus感染后持续的IDD所涉及的特定信号通路.
主要方法:
- 在体外和体内对S. aureus暴露后核细胞 (NPC) 的评估.
- 利用西方斑点,流细胞测量,TUNEL和细胞分析的组织学染色.
- 采用RNA测序,siRNA,lentiviral载体和Atf3-knockout小鼠来研究ATF3通路的作用.
主要成果:
- 黄金菌感染导致Aggrecan和原II的减少,NPC亡和衰老的增加,以及持续的ER胀.
- ATF3-CHOP通路被短暂的黄金色杆菌感染激活,与渐进的IDD相关,亡增加,并在体内增加P21表达.
- 在ATF3淘汰赛中,S. aureus诱导的NPC亡和衰老减弱,而在ATF3淘汰赛中,小鼠表现出较轻的IDD.
结论:
- 暂时的金黄色细菌感染可以通过持续的ER压力和ATF3-CHOP信号通路诱导渐进的IDD.
- ATF3-CHOP通路代表了缓解由S. aureus感染引起的磁盘退化潜在的治疗标.
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