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Comparative Study
. 2003 Dec 1;171(11):5853-64.
doi: 10.4049/jimmunol.171.11.5853.

Distinct effects of STAT5 activation on CD4+ and CD8+ T cell homeostasis: development of CD4+CD25+ regulatory T cells versus CD8+ memory T cells

Matthew A Burchill  1 , Christine A Goetz, Martin Prlic, Jennifer J O'Neil, Ian R Harmon, Steven J Bensinger, Laurence A Turka, Paul Brennan, Stephen C Jameson, Michael A Farrar
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Comparative Study

Distinct effects of STAT5 activation on CD4+ and CD8+ T cell homeostasis: development of CD4+CD25+ regulatory T cells versus CD8+ memory T cells

Matthew A Burchill et al. J Immunol. .

Abstract (V体育2025版)

Using transgenic mice that express a constitutively active version of STAT5b, we demonstrate that STAT5 plays a key role in governing B cell development and T cell homeostasis. STAT5 activation leads to a 10-fold increase in pro-B, but not pro-T, cells. Conversely, STAT5 signaling promotes the expansion of mature alphabeta T cells (6-fold increase) and gammadelta and NK T cells (3- to 4-fold increase), but not of mature B cells. In addition, STAT5 activation has dramatically divergent effects on CD8(+) vs CD4(+) T cells, leading to the selective expansion of CD8(+) memory-like T cells and CD4(+)CD25(+) regulatory T cells VSports手机版. These results establish that activation of STAT5 is the primary mechanism underlying both IL-7/IL-15-dependent homeostatic proliferation of naive and memory CD8(+) T cells and IL-2-dependent development of CD4(+)CD25(+) regulatory T cells. .

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