IL-21 limits peripheral lymphocyte numbers through T cell homeostatic mechanisms.
IL-21 limits peripheral lymphocyte numbers through T cell homeostatic mechanisms.
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DOI:
10.1371/journal.pone.0003118
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发表时间:
2008-09-05
期刊:
影响因子:
3.7
通讯作者:
Sarvetnick NE
中科院分区:
文献类型:
--
作者:
Datta S;Sarvetnick NE
IL-21, a member of the common γ-chain utilizing family of cytokines, participates in immune and inflammatory processes. In addition, the cytokine has been linked to autoimmunity in humans and rodents. To investigate the mechanism whereby IL-21 affects the immune system, we investigated its role in T cell homeostasis and autoimmunity in both non-autoimmune C57BL/6 and autoimmune NOD mice. Our data indicate that IL-21R knockout C57BL/6 and NOD mice show increased size of their lymphocyte population and decreased homeostatic proliferation. In addition, our experimental results demonstrate that IL-21 inhibits T cell survival. These data suggest that IL-21 acts to limit the size of the T cell pool. Furthermore, our data suggest IL-21 may contribute to the development of autoimmunity. Taken together, our results suggest that IL-21 plays a global role in regulating T cell homeostasis, promoting the continuous adaptation of the T cell lymphoid space.
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