Foxo3 Transcription Factor Drives Pathogenic T Helper 1 Differentiation by Inducing the Expression of Eomes.

Foxo3 Transcription Factor Drives Pathogenic T Helper 1 Differentiation by Inducing the Expression of Eomes.
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DOI:
10.1016/j.immuni.2016.09.010
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发表时间:
2016-10-18
期刊:
影响因子:
32.4
通讯作者:
Dejean, Anne S.
Dejean, Anne S.
中科院分区:
医学1区
文献类型:
--
作者:
Stienne, Caroline;Michieletto, Michael F.;Benamar, Mehdi;Carrie, Nadege;Bernard, Isabelle;Xuan-Hung Nguyen;Lippi, Yannick;Duguet, Fanny;Liblau, Roland S.;Hedrick, Stephen M.;Saoudi, Abdelhadi;Dejean, Anne S.

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转录因子Foxo 3在髓样细胞功能中起着至关重要的作用,但其在淋巴样细胞中的作用仍然不清楚。在这里,我们已经表明,Foxo 3的表达增加后,T细胞受体接合,并发挥了特定的作用,在极化的CD 4 + T细胞向致病性T辅助细胞-1(Th 1)细胞产生干扰素-γ(IFN-γ)和粒细胞单核细胞集落刺激因子(GM-CSF)。因此,Foxo 3缺陷小鼠表现出对实验性自身免疫性脑脊髓炎的易感性降低。在分子水平上,我们鉴定了Eomes作为CD 4 + T细胞中Foxo 3的直接靶基因,并且我们已经表明,在Foxo 3缺陷的CD 4 + T细胞中Eomes的基于慢病毒的过表达恢复了IFN-γ和GM-CSF的产生。因此,Foxo 3-Eomes通路是实现致病性Th 1细胞分化和神经炎症发展所需的完整特化基因程序的核心。
The transcription factor Foxo3 plays a crucial role in myeloid cell function but its role in lymphoid cells remains poorly defined. Here, we have shown that Foxo3 expression was increased after T cell receptor engagement and played a specific role in the polarization of CD4+ T cells towards pathogenic T helper-1 (Th1) cells producing interferon-γ (IFN-γ) and granulocyte monocyte colony stimulating factor (GM-CSF). Consequently, Foxo3-deficient mice exhibited reduced susceptibility to experimental autoimmune encephalomyelitis. At the molecular level, we identified Eomes as a direct target gene for Foxo3 in CD4+ T cells and we have shown that lentiviral-based overexpression of Eomes in Foxo3-deficient CD4+ T cells restored both IFN-γ and GM-CSF production. Thus, the Foxo3-Eomes pathway is central to achieve the complete specialized gene program required for pathogenic Th1 cell differentiation and development of neuroinflammation.
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