Immunoglobulin responses at the mucosal interface.

Immunoglobulin responses at the mucosal interface.
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DOI:
10.1146/annurev-immunol-031210-101317
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发表时间:
2011
影响因子:
29.7
通讯作者:
Chorny A
Chorny A
中科院分区:
医学1区
文献类型:
--
作者:
Cerutti A;Chen K;Chorny A

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粘膜表面被大型共生细菌群落定植,是病原体进入的主要场所。为了防止微生物入侵,粘膜B细胞通过多种滤泡和滤泡外途径释放大量免疫球蛋白(Ig)分子。IGA是粘膜分泌物中含量最丰富的抗体亚型,其在一线免疫中的成功归功于其跨上皮细胞的跨细胞作用能力。除了将IgA转移到粘膜表面外,上皮细胞还教育粘膜免疫系统了解局部微生物区系的组成,并指示B细胞启动IgA反应,在保持免疫动态平衡的同时产生免疫保护。在这里,我们回顾了我们对控制粘膜表面产生IgA的细胞相互作用和信号通路的了解的最新进展,并讨论了粘膜IGD的调节和功能的新发现,黏膜IGD是我们的粘膜抗体库中最神秘的同种类型。
Mucosal surfaces are colonized by large communities of commensal bacteria and represent the primary site of entry for pathogenic agents. To prevent microbial intrusion, mucosal B cells release large amounts of immunoglobulin (Ig) molecules through multiple follicular and extrafollicular pathways. IgA is the most abundant antibody isotype in mucosal secretions and owes its success in frontline immunity to its ability to undergo transcytosis across epithelial cells. In addition to translocating IgA onto the mucosal surface, epithelial cells educate the mucosal immune system as to the composition of the local microbiota and instruct B cells to initiate IgA responses that generate immune protection while preserving immune homeostasis. Here we review recent advances in our understanding of the cellular interactions and signaling pathways governing IgA production at mucosal surfaces and discuss new findings on the regulation and function of mucosal IgD, the most enigmatic isotype of our mucosal antibody repertoire.
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