Abstract:During thymocyte development, medullary thymic epithelial cells (mTECs) provide appropriate instructive cues in the thymic microenvironment for not only negative selection but also the generation of regulatory T (Treg) cells. Here, we identify that miR-155, a microRNA whose expression in Treg cells has previously been shown to be crucial for their development and homeostasis, also contributes to thymic Treg (tTreg) cell differentiation by promoting mTEC maturation. Mechanistically, we show that RANKL stimulati… Show more
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