雌激素受体α介导信号抑制I型干扰素反应以促进乳腺癌发生
Li-Bo Cao1,2,3, Zi-Lun Ruan1,2,3, Yu-Lin Yang1,2,3
1Department of Infectious Diseases, Medical Research Institute, Zhongnan Hospital of Wuhan University, College of Life Sciences, Wuhan University, Wuhan 430072, China.
Journal of molecular cell biology
|July 13, 2023
概括
雌激素受体α (ERα) 抑制I型干扰素反应,促进乳腺癌的生长. 用富尔韦斯特兰特阻断ERα可以增强抗瘤效果,这表明了新的治疗策略.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 内分泌学 在内分泌学.
背景情况:
- 雌激素受体α (ERα) 是约70%的乳腺癌的关键驱动因素,但其在致癌过程中的作用尚未完全理解.
- I型干扰素 (IFN) 反应在抗病毒免疫和癌症监测中起着至关重要的作用.
研究的目的:
- 研究ERα在调节乳腺癌I型IFN反应中的作用.
- 阐明ERα影响IFN刺激基因 (ISG) 转录的机制.
- 评估向ERα与I型IFN治疗结合的治疗潜力.
主要方法:
- 使用细胞系进行体外研究,以评估ERα对IFN-β诱导的ISG转录的影响.
- 机理学研究涉及基因组变异分析 (H2A.Z) 和蛋白质与蛋白质相互作用试验 (STAT2).
- 使用异种移植小鼠模型的体内研究和对临床患者数据的分析.
主要成果:
- 雌激醇的ERα激活抑制IFN-β诱导的ISG转录,而ERα缺乏或富尔韦斯特兰特治疗可以增强它.
- ERα通过诱导H2A.Z和与STAT2相互作用来抑制ISG转录,从而破坏ISGF3复合体.
- 富尔韦斯特兰与IFN-β结合抑制了小鼠的ERα+乳腺瘤生长.
- 在ERα+乳腺癌患者中,较高的ISG水平与更好的长期存活相关.
结论:
- 通过两种不同的机制,ERα作为I型IFN反应的负调节剂,从而促进乳腺癌发生.
- 向ERα可能会提高ERα+乳腺癌I型IFN基疗法的疗效.
- ERα和IFN反应之间的相互作用是乳腺癌进展和患者结果的关键因素.
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