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在AID/HAT1中介的JAG1/NOTCH信号的表观遗传原始化驱动了TNBC中瘤微环境的重编程
Junna Jiao1, Zhuangwei Lv2, Kai Zhang2
1School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang Engineering Technology Research Center of immune checkpoint drug for Liver-Intestinal Tumors, Xinxiang Medical University, Xinxiang, Henan 453003, People's Republic of China.
Cellular signalling
|September 10, 2025
概括
激活诱导的cytidine去氨酶 (AID) 通过激活NOTCH信号来表观遗传驱动三阴性乳腺癌 (TNBC). 准AID/HAT1-JAG1轴可能会克服治疗耐药性,并增强TNBC中的免疫治疗.
科学领域:
- 在瘤学瘤学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 免疫学 免疫学 免疫学
背景情况:
- 三阴性乳腺癌 (TNBC) 是具有侵略性的,缺乏向治疗.
- 瘤微环境 (TME) 显著影响TNBC进展和治疗耐药性.
- 在TNBC中涉及NOTCH信号,但其上游调节器和阻力机制尚不清楚.
研究的目的:
- 为了确定TNBC的新型表观遗传驱动因素.
- 阐明激活诱导的cytidine deaminase (AID) 在TNBC病原和TME重编程中的作用.
- 研究NOTCH信号中的AID/HAT1-JAG1轴及其治疗潜力.
主要方法:
- 研究了AID在TNBC模型中的作用.
- 使用染色体免疫沉试验来识别AID/HAT1结合部位.
- 评估了AID抗剂 (4-脱氧氨) 和HAT1抑制剂 (MG149) 对TNBC进展和TME的影响.
- 对AID和JAG1表达和免疫细胞透的临床TNBC队列进行分析.
主要成果:
- 艾滋病在表观遗传上通过HAT1招募到JAG1促进体来调节NOTCH信号,从而诱导H4K5乙化.
- 对AID或HAT1的遗传或药理抑制抑制了TNBC的进展,并重塑了TME.
- 准AID/HAT1-JAG1轴可以增强T细胞,NK细胞和B细胞的透.
- 艾滋病和JAG1的同时表达与增加的免疫透相关,并预测TNBC的生存率较低.
结论:
- 艾滋病是TNBC可塑性的主表观遗传调节器,通过乙化依赖NOTCH激活.
- 在TNBC中,AID/HAT1-JAG1轴是TME组成和治疗耐药性的关键决定因素.
- 针对这一轴提供了一种克服耐药性的双重战略,以及在AID阳性TNBC中精确免疫治疗的蓝图.
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