Role of Polymeric Immunoglobulin Receptor in IgA and IgM Transcytosis.

Role of Polymeric Immunoglobulin Receptor in IgA and IgM Transcytosis.
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聚合免疫球蛋白受体在 IgA 和 IgM 转胞吞作用中的作用

DOI:
10.3390/ijms22052284
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发表时间:
2021-02-25
影响因子:
5.6
通讯作者:
Wang JY
Wang JY
中科院分区:
生物学2区
文献类型:
--
作者:
Wei H;Wang JY

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多聚体免疫球蛋白受体(PIgR)是由多聚体免疫球蛋白受体(PIgR)介导的,由多聚体免疫球蛋白受体(PIgR)介导的多聚体IgA和IgM从基底外侧表面到粘膜顶端的跨细胞转运,随后分泌到黏膜液中。分泌型免疫球蛋白A和免疫球蛋白M在黏膜免疫应答病原性感染中起重要作用。PIgR结合和识别聚合物Ig A和Ig M需要连接链(J链),这是形成和稳定聚合物Ig结构所必需的一种小蛋白质。最近的研究发现,B区和B1区边缘带细胞特异性蛋白(MZB1)是一种新的聚合物IgA和IgM形成的调节因子。MZB1可能通过促进J链与Ig的结合来促进IgA和IgM的转胞作用。本文综述了pIgR在IgA和IgM跨细胞转运中的作用,J链在聚合的IgA和IgM的形成和识别中的作用,并着重介绍了分子伴侣蛋白MZB1作用的最新研究进展。
Transcytosis of polymeric IgA and IgM from the basolateral surface to the apical side of the epithelium and subsequent secretion into mucosal fluids are mediated by the polymeric immunoglobulin receptor (pIgR). Secreted IgA and IgM have vital roles in mucosal immunity in response to pathogenic infections. Binding and recognition of polymeric IgA and IgM by pIgR require the joining chain (J chain), a small protein essential in the formation and stabilization of polymeric Ig structures. Recent studies have identified marginal zone B and B1 cell-specific protein (MZB1) as a novel regulator of polymeric IgA and IgM formation. MZB1 might facilitate IgA and IgM transcytosis by promoting the binding of J chain to Ig. In this review, we discuss the roles of pIgR in transcytosis of IgA and IgM, the roles of J chain in the formation of polymeric IgA and IgM and recognition by pIgR, and focus particularly on recent progress in understanding the roles of MZB1, a molecular chaperone protein.
聚合免疫球蛋白受体在人肝细胞癌炎症诱导的肿瘤转移中的作用。
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