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 Vol 9: Interleukin-4 Regulates Eomesodermin in CD8  T Cell Development and Differentiation.


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This article is from PLoS ONE, volume 9.AbstractInterleukin IL-4 is a cytokine classically associated with CD4+ T helper type 2 differentiation, but has been recently shown to also be required for the development of CD8+ innate-like lymphocytes. CD8+ innate-like lymphocytes are non-conventional lymphocytes that exhibit characteristics typically associated with memory CD8+ T cells, including expression of the T-box transcription factor Eomesodermin Eomes. Here we investigate the signaling pathways required for IL-4 induction of Eomes and CD8+ innate-like lymphocyte markers in murine CD8SP thymocytes and peripheral CD8+ T cells. We demonstrate that IL-4 is sufficient to drive Eomes expression and the CD8+ innate-like lymphocyte phenotype through cooperation between STAT6- and Akt-dependent pathways. Furthermore, we show that while IL-4 has little effect on the induction of Eomes in the setting of robust T cell receptor TCR activation, this cytokine promotes Eomes in the setting of attenuated TCR stimulation in mature CD8+ T cells suggesting that cytokine signaling pathways may direct cell fate when TCR signals are limiting.



Autor: Carty, Shannon A.; Koretzky, Gary A.; Jordan, Martha S.

Fuente: https://archive.org/







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