BPTF Is Essential for T Cell Homeostasis and Function.

BPTF Is Essential for T Cell Homeostasis and Function.
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DOI:
10.4049/jimmunol.1600642
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发表时间:
2016-12-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Wan YY
Wan YY
中科院分区:
其他
文献类型:
--
作者:
Wu B;Wang Y;Wang C;Wang GG;Wu J;Wan YY

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溴结构域PHD指转录因子(BPTF)是一种广泛表达的ATP依赖性染色质重塑因子,对表观遗传学调节DNA可及性和基因表达至关重要。虽然BPTF对胸腺细胞的发育很重要,但其在成熟T细胞中的功能在很大程度上仍不清楚。通过特异性地从发育中的T细胞的晚期DN 3/DN 4阶段删除BPTF,我们发现BPTF通过细胞内在方式对T细胞的稳态至关重要。此外,BPTF对Treg细胞的维持和功能至关重要。Treg细胞特异性BPTF缺失导致Foxp 3表达减少,非淋巴器官中淋巴细胞浸润增加和全身性自身免疫综合征。因此,这些发现揭示了BPTF在T和Treg细胞功能和免疫稳态中的重要作用。
Bromodomain PHD Finger Transcription Factor (BPTF), a ubiquitously expressed ATP-dependent chromatin-remodeling factor, is critical for epigenetically regulating DNA accessibility and gene expression. While BPTF is important for the development of thymocytes, its function in mature T cells remains largely unknown. By specifically deleting BPTF from late DN3/DN4 stage of developing T cells, we found that BPTF was critical for the homeostasis of T cells via a cell intrinsic manner. In addition, BPTF was essential for the maintenance and function of Treg cells. Treg cell-specific BPTF deletion led to reduced Foxp3 expression, increased lymphocyte infiltration in the non-lymphoid organs and a systemic autoimmune syndrome. These findings therefore reveal a vital role for BPTF in T and Treg cell function and immune homeostasis.
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