Unexpected role for the B cell-specific Src family kinase B lymphoid kinase in the development of IL-17-producing γδ T cells.

Unexpected role for the B cell-specific Src family kinase B lymphoid kinase in the development of IL-17-producing γδ T cells.
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DOI:
10.4049/jimmunol.1002766
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发表时间:
2010-12-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Hayes SM
Hayes SM
中科院分区:
其他
文献类型:
--
作者:
Laird RM;Laky K;Hayes SM

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αβ 和 γδ T 细胞上的 Ag 受体不仅在它们识别的配体的性质上有所不同,而且在它们的信号传导潜力上也有所不同。我们假设αβ-和γδTCR信号转导的差异是由于与这两种TCR偶联的细胞内信号通路的差异造成的。为了研究这一点,我们采用转录分析来鉴定编码在成熟 αβ 和 γδ T 细胞群中差异表达的信号分子的基因。出乎意料的是,我们发现B淋巴激酶(Blk)是一种主要在B细胞中表达的Src家族激酶,在γδT细胞中表达,但在αβT细胞中不表达。对 Blk 缺陷小鼠的分析表明,Blk 是产生 IL-17 的 γδ T 细胞发育所必需的。此外,Blk 在淋巴前体细胞中表达,并以这种能力在个体发育过程中调节胸腺细胞结构中发挥作用。
The Ag receptors on αβ and γδ T cells differ not only in the nature of the ligands that they recognize but also in their signaling potential. We hypothesized that the differences in αβ- and γδTCR signal transduction were due to differences in the intracellular signaling pathways coupled to these two TCRs. To investigate this, we employed transcriptional profiling to identify genes encoding signaling molecules that are differentially expressed in mature αβ and γδ T cell populations. Unexpectedly, we found that B lymphoid kinase (Blk), a Src family kinase expressed primarily in B cells, is expressed in γδ T cells but not in αβ T cells. Analysis of Blk-deficient mice revealed that Blk is required for the development of IL-17-producing γδ T cells. Furthermore, Blk is expressed in lymphoid precursors and, in this capacity, plays a role in regulating thymus cellularity during ontogeny.
白介素7的肠细胞表达诱导了伽玛达尔塔T细胞和佩耶的斑块的发展。
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