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The cytokine TGF-β co-opts signaling via STAT3-STAT4 to promote the differentiation of human TFH cells.


Schmitt N, Liu Y, Bentebibel SE, Munagala I, Bourdery L, Venuprasad K, Banchereau J, Ueno H

Understanding the developmental mechanisms of follicular helper T cells (TFH cells) in humans is relevant to the clinic. However, the factors that drive the differentiation of human CD4(+) helper T cells into TFH cells remain largely undefined. Here we found that transforming growth factor-β (TGF-β) provided critical additional signals for the transcription factors STAT3 and STAT4 to promote initial TFH differentiation in humans. This mechanism did not appear to be shared by mouse helper T cells. Developing human TFH cells that expressed the transcriptional repressor Bcl-6 also expressed RORγt, a transcription factor typically expressed by the TH17 subset of helper T cells. Our study documents a mechanism by which TFH cells and TH17 cells emerge together in inflammatory environments in humans, as is often observed in many human autoimmune diseases.

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Antibody

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Published
September, 2014

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  • Mouse IgG
    C15410206
    Rabbit IgG

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