SASP因子IL-6通过cGAS-STING-NFκB内衰老非正规通路维持细胞自主衰老细胞
Florencia Herbstein1, Melanie Sapochnik1, Alejandra Attorresi1
1Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA)-CONICET-Partner Institute of the Max Planck Society, Buenos Aires, Argentina.
Aging cell
|July 16, 2024
概括
洲际蛋白-6 (IL-6) 通过内分泌途径维持细胞衰老,而不是分泌. 这种细胞内IL-6机制控制瘤生长,并为衰老提供了新的治疗策略.
科学领域:
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
背景情况:
- 衰老细胞通过衰老相关的分泌表现型 (SASP) 释放因子.
- 干白素-6 (IL-6) 是一个关键的SASP因子,具有双重作用:增强生产细胞的衰老,并诱导邻近细胞的增殖.
- 在IL-6的对比作用背后的机制尚未完全理解.
研究的目的:
- 阐明IL-6影响细胞衰老的机制.
- 研究细胞内IL-6信号在衰老和瘤生长中的作用.
- 在基于衰老的疗法中探索向IL-6通路的治疗潜力.
主要方法:
- 使用细胞模型研究IL-6在衰老中的作用.
- 分析了IL-6信号通路,包括内分泌机制,cGAS-STING和NFκB激活.
- 评估IL-6操纵对NOD/SCID小鼠瘤生长的影响.
主要成果:
- 细胞衰老是由内分泌IL-6机制维持的,而不是IL-6的分泌.
- 细胞内IL-6与细胞内受体相互作用,激活cGAS-STING和NFκB通路.
- 在衰老细胞中停活IL-6促进瘤发生,而其再表达控制瘤生长.
结论:
- 通过内分泌途径,IL-6维持细胞自主衰老,这与其对分泌的瘤原生效应不同.
- 这种细胞内IL-6信号通路对于衰老和瘤生长控制至关重要.
- 准内分泌IL-6通路为与衰老相关的疾病提供了新的治疗机会.
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