The zinc finger transcription factor Zbtb7b represses CD8-lineage gene expression in peripheral CD4+ T cells.
The zinc finger transcription factor Zbtb7b represses CD8-lineage gene expression in peripheral CD4+ T cells.
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DOI:
10.1016/j.immuni.2008.09.019
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发表时间:
2008-12-19
期刊:
影响因子:
32.4
通讯作者:
Bosselut R
中科院分区:
文献类型:
--
作者:
Wang L;Wildt KF;Castro E;Xiong Y;Feigenbaum L;Tessarollo L;Bosselut R
How CD4-CD8 expression is maintained in mature T cells is largely unknown. The present study has examined the role in this process of the zinc finger protein Zbtb7b, a critical factor for the commitment of MHC II-restricted thymocytes to the CD4 lineage, that remains expressed in mature CD4 cells. We show that Zbtb7b acts in peripheral CD4 cells to suppress CD8-lineage gene expression, including that of CD8 and cytotoxic effector genes perforin and Granzyme B, and is important for the proper repression of IFNγ during effector differentiation. The inappropriate expression of IFNγ by Zbtb7b-deficient CD4 cells required the activities of Eomesodermin and Runx3 transcription factors. Runx activity was needed for Granzyme B expression, indicating that Runx proteins control expression of the cytotoxic program. We conclude that a key function of Zbtb7b in the mature CD4 T cell compartment is to repress CD8-lineage gene expression.
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