TCR repertoire and Foxp3 expression define functionally distinct subsets of CD4+ regulatory T cells.
TCR repertoire and Foxp3 expression define functionally distinct subsets of CD4+ regulatory T cells.
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TCR 库和 Foxp3 表达定义了功能上不同的 CD4+ 调节性 T 细胞亚群。
DOI:
10.4049/jimmunol.0900514
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发表时间:
2009-09-01
影响因子:
4.4
通讯作者:
Kraj, Piotr
中科院分区:
文献类型:
--
作者:
Kuczma, Michal;Pawlikowska, Iwona;Kopij, Magdalena;Podolsky, Robert;Rempala, Grzegorz A.;Kraj, Piotr
Despite extensive research efforts to characterize peripheral regulatory T cells (Treg) expressing transcription factor Foxp3, their subset complexity, phenotypic characteristics, TCR repertoire and antigen specificities remain ambiguous. Here, we identify and define two subsets of peripheral Treg cells differing in Foxp3 expression level and TCR repertoires. Treg cells expressing a high level of Foxp3 and TCRs not utilized by naive CD4+ T cells present a stable suppressor phenotype and dominate the peripheral Treg population in unmanipulated mice. The second Treg subset, expressing a lower level of Foxp3 and utilizing TCRs shared with naive CD4+ T cells constitutes a small fraction of all Treg cells in unmanipulated mice and enriches Treg population with the same antigen specificities as expressed by activated/effector T cells. This Treg subset undergoes extensive expansion during response to antigen when it becomes a major population of antigen-specific Treg cells. Thus, Treg cells expressing TCRs shared with naive CD4+ T cells have a flexible phenotype and may downregulate Foxp3 expression which may restore immune balance at the conclusion of immune response or convert these cells to effector T cells producing inflammatory cytokines.
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影响因子:
32.4
作者:
Ernst, B;Lee, DS;Surh, CD
通讯作者:
Surh, CD
影响因子:
32.4
作者:
Fontenot, JD;Rasmussen, JP;Rudensky, AY
通讯作者:
Rudensky, AY
影响因子:
32.4
作者:
Hill, Jonathan A.;Feuerer, Markus;Benoist, Christophe
通讯作者:
Benoist, Christophe
影响因子:
30.5
作者:
Hsieh, CS;Zheng, Y;Rudensky, AY
通讯作者:
Rudensky, AY
影响因子:
64.8
作者:
Marson, Alexander;Kretschmer, Karsten;Young, Richard A.
通讯作者:
Young, Richard A.