Follicular B cell trafficking within the spleen actively restricts humoral immune responses.

Follicular B cell trafficking within the spleen actively restricts humoral immune responses.
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DOI:
10.1016/j.immuni.2010.07.016
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发表时间:
2010-08-27
期刊:
影响因子:
32.4
通讯作者:
Sebzda E
Sebzda E
中科院分区:
医学1区
文献类型:
--
作者:
Hoek KL;Gordy LE;Collins PL;Parekh VV;Aune TM;Joyce S;Thomas JW;Van Kaer L;Sebzda E

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滤泡(FO)和边缘区(MZ)B细胞维持在脾脏内的不同位置,但这种分离的遗传基础仍然是谜。我们现在报告说,B细胞隔离需要通过转录因子Klf 2对迁移受体进行谱系特异性调节。此外,使用基因靶向小鼠,我们表明,改变脾B细胞迁移赋予一个显着的体内功能获得表型FO B细胞,包括能够快速响应MZ相关抗原和病原体的T细胞依赖性的方式。这项工作表明,在野生型动物中,幼稚FO B细胞被主动从MZ中清除,从而限制了它们对血源性病原体的反应能力。
Follicular (FO) and marginal zone (MZ) B cells are maintained in distinct locations within the spleen but the genetic basis for this separation is still enigmatic. We now report that B cell sequestration requires lineage-specific regulation of migratory receptors by the transcription factor, Klf2. Moreover, using gene-targeted mice we show that altered splenic B cell migration confers a significant in vivo gain-of-function phenotype to FO B cells, including the ability to quickly respond to MZ-associated antigens and pathogens in a T cell-dependent manner. This work demonstrates that in wild-type animals, naïve FO B cells are actively removed from the MZ, thus restricting their capacity to respond to blood-borne pathogens.
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