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  • Title: Eomesodermin driven IL-10 production in effector CD8+ T cells promotes a memory phenotype.
    Author: Reiser J, Sadashivaiah K, Furusawa A, Banerjee A, Singh N.
    Journal: Cell Immunol; 2019 Jan; 335():93-102. PubMed ID: 30528350.
    Abstract:
    CD8+ T cell differentiation is controlled by the transcription factors T-bet and Eomesodermin, in concert with the cytokines IL-2, IL-10 and IL-12. Among these pathways, the mechanisms by which T-box proteins and IL-10 interact to promote a memory T cell fate remain poorly understood. Here, we show that Eomes and IL-10 drive a central memory phenotype in murine CD8+ T cells. Eomes expression led to increased IL-10 expression by the effector CD8+ T cells themselves as well as an increase in the level of the lymph node homing selectin CD62L. Furthermore, exposure of effector CD8+ T cells to IL-10 maintained CD62L expression levels in culture. Thus, Eomes promotes a step-wise transition of effector T cells towards a memory phenotype, synergizing with IL-10 to enhance the expression of CD62L. The early augmentation of lymph node homing markers by Eomes may facilitate the retention of effector T cells in the relatively low inflammatory milieu of the secondary lymphoid organs that promotes central memory development.
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