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
Sarvetnick NE
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Datta S;Sarvetnick NE

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IL-21是利用细胞因子家族的γ-链中的一员,参与免疫和炎症过程。此外,这种细胞因子与人类和啮齿动物的自身免疫有关。为了研究IL-21影响免疫系统的机制,我们在非自身免疫性C57BL/6和自身免疫性NOD小鼠中研究了其在T细胞稳态和自身免疫中的作用。我们的数据表明,IL-21R敲除C57BL/6和NOD小鼠的淋巴细胞群大小增加,稳态增殖减少。此外,我们的实验结果表明IL-21抑制T细胞存活。这些数据表明IL-21的作用是限制T细胞池的大小。此外,我们的数据表明IL-21可能有助于自身免疫的发展。综上所述,我们的研究结果表明IL-21在调节T细胞稳态中发挥全局作用,促进T细胞淋巴样空间的持续适应。
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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