Fezf2为免疫耐受性编排一个自抗原表达的胸膜程序
Hiroyuki Takaba1, Yasuyuki Morishita2, Yoshihiko Tomofuji3
1Department of Immunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo 113-0033, Japan; Takayanagi Osteonetwork Project, Exploratory Research for Advanced Technology Program, Japan Science and Technology Agency (JST), Tokyo 113-0033, Japan.
Cell
|November 7, 2015
概括
Fezf2 是一种新型的转录因子,可以独立于 Aire 调节胸腺内受组织限制的抗原 (TRA). 这一发现揭示了建立免疫耐受性和预防自身免疫的第二个关键途径.
科学领域:
- 免疫学
- 分子生物学
- 遗传学
背景情况:
- 自我耐受对于预防自身免疫性疾病至关重要.
- 骨髓胸膜上皮细胞 (mTECs) 表达受组织限制的抗原 (TRAs),以消除自我反应的T细胞.
- 转录因子Aire被认为是mTEC中TRA表达的主要调节剂.
研究的目的:
- 研究Fezf2在mTEC中调节TRA表达的作用.
- 确定Fezf2在建立免疫耐受性方面是否独立于Aire.
- 阐明在胸腺中TRA表达的机制.
主要方法:
- 在mTEC中使用了针对Fezf2的特定基因淘汰的小鼠模型.
- 对周围器官的自身抗体产生和炎症细胞透进行了分析.
- 在Fezf2缺乏和Aire缺乏小鼠之间进行了自身免疫表型的比较.
- 研究调节Fezf2和Aire表达的信号通路.
主要成果:
- 独立于Aire,Fezf2直接调节mTEC中的各种TRA基因.
- 在mTEC中缺乏Fezf2的小鼠表现出严重的自身免疫症状,与缺乏Aire的小鼠不同.
- Fezf2和Aire是由不同的信号通道调节的.
- 通过Fezf2和Aire促进了不同的蛋白质类.
结论:
- 与Aire一起,Fezf2是mTEC中TRA表达的关键调节者.
- 通过控制TRA表达,两个涉及Fezf2和Aire的独立途径确保了免疫耐受性.
- Fezf2的失调有助于自身免疫性疾病.
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