Secretory IgA: arresting microbial pathogens at epithelial borders.

Secretory IgA: arresting microbial pathogens at epithelial borders.
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DOI:
10.3109/08820131003622635
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发表时间:
2010
影响因子:
2.8
通讯作者:
Forbes SJ
Forbes SJ
中科院分区:
医学4区
文献类型:
--
作者:
Mantis NJ;Forbes SJ

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分泌型IgA(SIgA),肠道分泌物中的主要抗体类别。虽然SIgA在保护肠道上皮细胞免受肠道病原体和毒素侵害方面的作用早已被认识到,但令人惊讶的是,人们对实现这一目标的分子机制知之甚少。本文综述了目前对SIgA如何发挥作用以防止微生物病原体和毒素进入肠道上皮的了解。我们还讨论了我们实验室最近检测特定保护性单抗IgA与沙门氏菌相互作用的工作,并在此工作的基础上提出,SIgA具有以前未被认识到的直接干扰粘膜表面微生物毒力的能力。
Secretory IgA (SIgA), the predominant class of antibody found in intestinal secretions. While SIgA’s role in protecting the intestinal epithelium from the enteric pathogen and toxins has long been recognized, surprisingly little is known about the molecular mechanisms by which this is achieved. The present review summarizes the current understanding of how SIgA functions to prevent microbial pathogens and toxins from gaining access to the intestinal epithelium. We also discuss recent work from our laboratory examining the interaction of a particular protective monoclonal IgA with Salmonella and propose, based on this work, that SIgA has a previously unrecognized capacity to directly interfere with microbial virulence at mucosal surfaces.
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