ERRα-KDM5C抑制了STING增强剂的活性,以调节乳腺癌进展中的I型干扰素信号传递
Zu-Hui Xu1,2, Jie Chen1,3, Ying He4
1Department of Laboratory Medicine, First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China.
Cell death & disease
|February 18, 2026
概括
与雌激素相关的受体α (ERRα) 和KDM5C调节了STING增强剂的活性. 削减ERRα激活STING信号,抑制乳腺瘤的生长.
科学领域:
- 分子生物学分子生物学
- 癌症生物学 癌症生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 增强剂活性调节对于基因表达和细胞功能至关重要.
- 控制动态增强剂活动的机制尚未完全理解.
- 刺痛通路与免疫反应和癌症有关.
研究的目的:
- 研究雌激素相关受体α (ERRα) 在调节增强剂活性中的作用.
- 阐明ERRα和KDM5C在控制基因表达中的相互作用.
- 确定ERRα-KDM5C复合体对STING信号和乳腺癌进展的影响.
主要方法:
- 在活性增强剂中对ERRα和KDM5C的同时占用性分析.
- 在乳腺癌细胞中ERRα的耗尽研究.
- 在STING增强剂中评估基因素修饰 (H3K4me3,H3K4me1).
- 增强器RNA (eRNA) 和STING基因转录的测量.
- 通过转录学分析TBK1-IRF3通路,I型干扰素 (IFN) 和IFN刺激基因 (ISG).
- 在体外和体内对乳腺瘤细胞生长的评估.
主要成果:
- ERRα与KDM5C形成一个复合体,共占有包括STING位点在内的活性增强剂.
- 缺少ERRα导致STING增强剂过度激活 (增加H3K4me3,减少H3K4me1,增加eRNA转录).
- 消耗ERRα增强STING基因转录和TBK1-IRF3通路激活,增加IFN和ISG的表达.
- 失去ERRα在体外和体内显著降低了乳腺瘤细胞的生长,部分是通过STING信号激活.
结论:
- 该ERRα-KDM5C复合体作为STING增强剂活性的关键调节者.
- ERRα-KDM5C复合体控制着STING信号传递,影响着乳腺瘤的进展.
- 准ERRα-KDM5C相互作用可能为乳腺癌提供治疗策略.
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