Foxp3通过与AML1/Runx1相互作用来控制调节性T细胞功能
Masahiro Ono1, Hiroko Yaguchi, Naganari Ohkura
1Department of Experimental Pathology, Institute for Frontier Medical Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan.
Nature
|March 23, 2007
概括
调节性T细胞 (T) 维持免疫平衡. 转录因子Foxp3与AML1相互作用,抑制IL-2和IFN-,控制T(R) 细胞功能和免疫反应.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 转录因子功能的作用
背景情况:
- 自然产生的CD25+CD4+调节性T细胞 (T(R细胞) 对于维持免疫自我耐受性和免疫平衡至关重要.
- T (R) 细胞抑制异常免疫反应,防止自身免疫性疾病和过敏.
- 转录因子Foxp3是T(R) 细胞发育和功能的关键调节者,其子宫外表达赋予抑制活性.
研究的目的:
- 阐明Foxp3控制T(R) 细胞功能的分子机制,包括细胞因子的产生和T(R) 细胞相关分子的表达.
- 研究转录因子AML1 (急性髓性白血病1) /Runx1在调节T(R) 细胞相关基因表达中的作用.
- 探索准Foxp3-AML1相互作用以控制T细胞介导免疫反应的潜力.
主要方法:
- 研究了Foxp3和AML1在自然T(R) 细胞中的相互作用.
- 分析了这种相互作用对IL-2和IFN-gamma的基因表达的影响.
- 评估了对T(R) 细胞相关分子的上调和整体抑制活性的影响.
主要成果:
- 证明AML1/Runx1激活了常规CD4+T细胞中的IL-2和IFN-玛基因表达.
- 表明Foxp3在自然T(R) 细胞中与AML1进行物理相互作用.
- 提供了证据表明,这种Foxp3-AML1相互作用抑制IL-2和IFN-马生成,调节T(R) 细胞分子,并赋予抑制活性.
结论:
- 福克斯p3和AML1之间的相互作用是控制T(R) 细胞功能和抑制活性的关键机制.
- 这种由Foxp3和AML1进行的转录控制对于维持免疫平衡至关重要.
- 准Foxp3-AML1相互作用为调节T细胞介导的免疫反应在生理和病理条件下提供了潜在的策略.
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