Interactions of viruses and microparticles with apical plasma membranes of M cells: implications for human immunodeficiency virus transmission.

Interactions of viruses and microparticles with apical plasma membranes of M cells: implications for human immunodeficiency virus transmission.
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病毒和微粒与 M 细胞顶端质膜的相互作用:对人类免疫缺陷病毒传播的影响。

DOI:
10.1086/314800
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发表时间:
1999
期刊:
The Journal of infectious diseases.
影响因子:
--
通讯作者:
Neutra,MR
Neutra,MR
中科院分区:
--
文献类型:
--
作者:
Neutra,MR

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在直肠粘膜中,淋巴小叶相关上皮的特化M细胞将抗原从粘膜表面以泡状方式运输到有组织的粘膜淋巴组织中,在那里诱导免疫反应。细菌和病毒可以利用这一机制来启动粘膜或全身感染。病毒病原体,包括呼肠孤病毒、脊髓灰质炎病毒,可能还有人类免疫缺陷病毒(HIV),可以通过附着在M细胞的顶膜进入肠道或直肠粘膜,但参与这些相互作用的膜成分尚不清楚。上皮细胞顶端表面的糖蛋白涂层起扩散屏障的作用,限制颗粒和微生物对膜糖脂和某些肠细胞寡糖表位的访问,但允许选择性地与M细胞黏附。M细胞膜糖脂的可及性和其活跃的内吞活性可促进HIV进入直肠粘膜。
In the rectal mucosa, specialized M cells of the lymphoid follic—associated epithelium conduct vesicular transport of antigens from the mucosal surface into organized mucosal lymphoid tissues, where immune responses are induced. Bacteria and viruses may exploit this mechanism to initiate mucosal or systemic infection. Viral pathogens, including reovirus, poliovirus, and possibly human immunodeficiency virus (HIV), can enter the intestinal or rectal mucosa by adhering to apical membranes of M cells, but the membrane components involved in these interactions are unknown. Glycoprotein coats on the apical surfaces of epithelial cells act as diffusion barriers that limit access of particles and microorganisms to membrane glycolipids and to certain oligosaccharide epitopes of enterocytes but allow selective adherence to M cells. The accessibility of membrane glycolipids of M cells, along with their active endocytic activity, could promote entry of HIV into the rectal mucosa.
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