在急性周周炎之后,IKZF1通过表观遗传调节线粒体功能来加剧炎症反应
Guanya Liu1,2,3, Pengfei Hu1,2,3, Ying Dong4
1Department of General Surgery, Huadong Hospital, Fudan University, Shanghai, China.
Frontiers in immunology
|September 29, 2025
概括
转录因子IKZF1通过沉默SDHB驱动腹膜炎中的巨细胞炎症,导致线粒体功能障碍. 向IKZF1或增强乙化为急性炎症条件提供了潜在的治疗方法.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 细胞的新陈代谢
背景情况:
- 巨细胞对免疫反应至关重要,但当过度激活时可能导致组织损伤.
- 急性腹膜炎涉及失调的巨细胞炎症.
- 转录因子IKZF1在围炎引起的巨细胞激活中的作用尚不清楚.
研究的目的:
- 研究IKZF1在调节急性周周炎期间的炎症反应中的分子机制.
- 探索针对IKZF1进行治疗干预的潜力.
主要方法:
- 膜炎的小鼠结和穿孔 (CLP) 模型.
- 分析IKZF1表达,线粒体功能 (ROS,ATP,糖酸盐) 和SDHB乙化.
- 使用列纳利多米德 (IKZF1抑制剂) 和酸盐补充剂.
- 染色体免疫沉降 (ChIP) 和共免疫沉降 (Co-IP) 试验.
主要成果:
- 在CLP周周炎期间,巨细胞中的IKZF1表达增加.
- 列纳利多米德治疗抑制了IKZF1,减少了炎症,并减轻了肺损伤.
- 通过HDAC3招募,IKZF1抑制了SDHB表达,导致线粒体功能障碍和炎症.
- 乙酸补充恢复了SDHB乙化,并抵消了炎症.
结论:
- IKZF1通过HDAC3-介导脱乙化通过表观遗传沉默SDHB加剧腹腔炎中的巨细胞炎症.
- 这会扰乱线粒体的新陈代谢,并放大促炎信号.
- 向IKZF1或增强乙化为急性炎症条件提供了新的治疗策略,IKZF1作为潜在的生物标志物.
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