超越对抗性:IL-4利用TNF信号来塑造其在单细胞和巨细胞中的基因表达特征
Ruoxi Yuan1, Chao Yang1, Bikash Mishra1,2
1HSS Research Institute and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY.
bioRxiv : the preprint server for biology
|August 6, 2025
概括
瘤亡因子 (TNF) 令人惊的是,它能够促进IL-4 (IL-4) 基因表达,而IL-4可选择性地抑制TNF反应. 这种细胞因子交叉,涉及表观遗传机制,促进炎症和组织修复.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 细胞因子交叉,特别是亲和抗炎信号之间的交叉抑制,对于免疫调节至关重要.
- 在炎症和组织修复过程中,瘤亡因子 (TNF) 和介质蛋白-4 (IL-4) 之间的相互作用仍然不完全理解.
研究的目的:
- 研究人体单细胞中TNF和IL-4之间的交叉调节机制和皮肤伤口愈合模型.
- 阐明这种细胞因子相互作用对基因表达和免疫反应的功能后果.
主要方法:
- 主要的人类单细胞培养和皮肤伤口愈合模型.
- 分析TNF和IL-4诱导的基因表达模式.
- 对表观遗传修饰的研究,包括基因素标记和转录因子合作 (NF-κB,STAT6).
主要成果:
- 与人们对交叉抑制的预期相反,TNF作为IL-4诱导的基因表达的辅助刺激剂.
- IL-4选择性地抑制了TNF诱导的干扰素 (IFN) 反应,对其他炎症基因的影响最小.
- 通过TNF和IL-4对参与炎症和组织修复的基因组的协同诱导.
- 表观遗传机制,包括H3K27me3删除和IRF1抑制,介导了交叉通话.
结论:
- 通过TNF辅助刺激确定了一种通过TNF辅助刺激扩大IL-4反应的新机制.
- 证明了对抗性细胞因子之间的复杂交互,涉及对免疫和组织修复至关重要的特定基因反应的合作.
- 突出了表观遗传调节在炎症和愈合期间调解细胞因子相互作用中的作用.
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