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Updated: Jan 28, 2026

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持续的STING-IRF7信号加剧LPS诱导的子宫内膜炎通过过度的中性粒细胞细胞外陷生成
Min Chu1,2, Ding Ma1,2, Zhan Song3
1Reproductive Medicine Center, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China.
Frontiers in immunology
|January 26, 2026
概括
干扰素基因刺激器 (STING) 途径通过促进中性粒细胞外细胞陷 (NET) 的形成,加剧慢性子宫内膜炎. 缺少STING可以减少炎症和组织损伤,这表明STING是子宫内膜炎的治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 生殖生物学 生殖生物学
背景情况:
- 干扰素基因刺激 (STING) 途径对先天免疫和慢性炎症至关重要.
- 过度的中性粒细胞激活和中性粒细胞细胞外陷 (NET) 形成有助于在持久性感染中损害组织.
- 在慢性炎症期间,STING在调节NET形成中的确切作用尚未完全理解.
研究的目的:
- 阐明STING信号影响慢性子宫内膜炎中NET形成的机制.
- 在此背景下,调查由STING调节的下游目标和信号轴.
- 评估针对慢性子宫内膜炎的STING通路的治疗潜力.
主要方法:
- 在野生类型和STING缺陷小鼠中的LPS诱导的小鼠子宫内膜炎模型.
- 评估髓氧化酶活性和NET形成.
- 使用分子和细胞测试识别STING下游目标.
- 在体外和体内验证使用隔离的中性粒细胞和淘汰赛小鼠识别的途径.
主要成果:
- 在子宫内膜炎模型中,STING缺陷显著抑制了髓氧化酶活性和NET形成.
- STING通过IRF7调节CD11b的表达,这反过来又驱动LCN2的表达.
- LCN2-MC4R-ICAM-1轴促进中性粒细胞的招募和NETosis,这是一个依赖于STING-IRF7通路的过程.
- 在子宫内膜免疫微环境中,STING缺乏减少了炎症透,并恢复了HOXA10的表达.
结论:
- 通过对CD11b进行上调和激活LCN2-ICAM-1轴,STING-IRF7通路会加剧子宫内膜炎症和组织损伤.
- 准STING信号通路为慢性子宫内膜炎提供了一个潜在的治疗策略.
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