转录因子BATF开创了通过与IRF4相互作用的效应体CD8+T细胞的分化程序
Sotaro Fujisawa1, Yamato Tanabe2, Arisa Hojo1
1Department of Molecular Genetics, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan.
Cell reports
|August 7, 2025
概括
基本氨酸拉链转录因子ATF-like (BATF) 是一个先驱转录因子,在病毒感染期间对CD8+T细胞 (CTL) 差异化至关重要. 它启动了染色体重塑,与IRF4合作,以实现全效的CTL开发.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 病毒学 病毒学
背景情况:
- CD8+ T 细胞 (CTL) 对病毒免疫非常重要.
- 转录因子调节了CTL分化.
- 在早期CTL重编程中,BATF的作用尚未完全被理解.
研究的目的:
- 研究BATF在急性病毒感染期间CTL分化中的作用.
- 阐明BATF控制表观基因和转录基因重编程的机制.
- 确定BATF和IRF4在效应器CTL开发中的相互作用.
主要方法:
- 在BATF缺陷的CTL中分析基因表达和染色质可访问性.
- 对转录因子结合动态的研究.
- 使用突变蛋白质评估BATF-IRF4相互作用.
- 对抗原特异性CTL增殖和分化的研究.
主要成果:
- 失去BATF显著改变了基因表达,染色质可访问性和转录因子结合.
- 在BATF-IRF4相互作用对于效应器CTL分化,染色质重塑和扩散至关重要.
- 根据BATF的说法,BATF可以独立启动染色体重塑,但随后的表观基因组变化需要IRF4.
- BATF的结合在很大程度上独立于IRF4,而IRF4的结合则取决于BATF.
结论:
- 随着对抗原的接触,BATF作为一个开创性的转录因子,在CTL中启动染色质重组.
- 在BATF和IRF4之间的合作对于动态表观基因组和转录基因组重编程至关重要,从而导致效应器CTL分化.
- 在协调CTL对病毒感染反应的早期阶段,BATF的作用是根本性的.
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