BIDIRECTIONAL ENTRY OF POLIOVIRUS INTO POLARIZED EPITHELIAL-CELLS

被引:27
作者
TUCKER, SP [1 ]
THORNTON, CL [1 ]
WIMMER, E [1 ]
COMPANS, RW [1 ]
机构
[1] SUNY STONY BROOK, DEPT MICROBIOL, STONY BROOK, NY 11794 USA
关键词
D O I
10.1128/JVI.67.1.29-38.1993
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The interactions of viruses with polarized epithelial cells are of some significance to the pathogenesis of disease because these cell types comprise the primary barrier to many virus infections and also serve as the sites for virus release from the host. Poliovirus-epithelial cell interactions are of particular interest since this virus is an important enteric pathogen and the host cell receptor has been identified. In this study, poliovirus was observed to adsorb to both the apical and basolateral surfaces of polarized monkey kidney (Vero C1008) and human intestinal (Caco-2) epithelial cells but exhibited preferential binding to the basolateral surfaces of both cell types. Localization of the poliovirus receptor by a receptor-specific monoclonal antibody (D171) revealed a similar distribution predominantly on basolateral membranes, and treatment of cells with antibody D171 inhibited virus adsorption to both membrane surfaces. Poliovirus was able to initiate infection with similar efficiency following adsorption to either surface, and infection was blocked at both surfaces by D171, indicating that functional receptor molecules are expressed on both surfaces at sufficient density to mediate efficient infection at the apical and basolateral plasma membranes. Poliovirus infection resulted in a decrease in transepithelial resistance which was inhibited by prior treatment with monoclonal antibody D171 and occurred prior to other visible cytopathic effects. These results have interesting implications for viral pathogenesis in the human gut.
引用
收藏
页码:29 / 38
页数:10
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