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  • Title: Development and function of agonist-induced CD25+Foxp3+ regulatory T cells in the absence of interleukin 2 signaling.
    Author: D'Cruz LM, Klein L.
    Journal: Nat Immunol; 2005 Nov; 6(11):1152-9. PubMed ID: 16227983.
    Abstract:
    Interleukin 2 signaling is believed to be critically involved in several aspects of CD25(+) CD4(+) regulatory T cell biology, such as intrathymic development, peripheral survival and suppressive function. Here we have analyzed the effects of interleukin 2 or CD25 deficiency on agonist-driven thymic development and the peripheral homeostasis of an antigen-specific population of regulatory T cells positive for forkhead family transcription factor Foxp3 and have correlated our observations with polyclonal suppressor populations. We found that the differentiation, acquisition of functional capacity and formation of a sizeable pool of suppressor T cells in the thymus was independent of interleukin 2 signaling, but that interleukin 2 was essential for the survival of mature Foxp3(+) regulatory T cells.
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