alexa Determinants of reovirus interaction with the intestinal M cells and absorptive cells of murine intestine.
Immunology

Immunology

Journal of Vaccines & Vaccination

Author(s): Wolf JL, Kauffman RS, Finberg R, Dambrauskas R, Fields BN,

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Abstract Reovirus type 1 penetrates the gastrointestinal tract in suckling mice via specialized epithelial cells, designated membranous cells, or M cells, located in the epithelium overlying Peyer's patches. We have examined whether the interaction of reovirus with murine mucosa of in situ closed ileal loops is influenced by mouse age or strain or reovirus serotype. Neither mouse age (suckling or adult), strain (C3H/HeJ or Balb/cJ), nor reovirus serotype (types 1 and 3) affected reovirus adherence to and transport through M cells. In all conditions, reovirions adhered to the M-cell surface and were transported across M cells in endocytic vesicles. The adherence to and endocytosis by M cells of type 1 reovirus and reassortants with the viral hemagglutinin of type 1 were selective in suckling mice; type 1 virus was not adherent to nor endocytosed by absorptive cells. In adult mice, type 1 reovirions adhered to the surface of a minority of absorptive cells but were never seen within absorptive cell cytoplasm. In contrast, type 3 reovirus and reassortants with the viral hemagglutinin of type 3 adhered to and were endocytosed not only by M cells but also by absorptive cells of suckling mice. Virions accumulated within lysosomelike bodies in absorptive cells but transport of virions across absorptive cells was not observed. These studies indicate that (a) adherence of reovirus to the apical surface of and transcellular transport by M cells is independent of viral serotype or viral surface proteins, (b) adherence of reovirus to and transcellular transport by M cells is independent of mouse age after 9 days and comparable in two mouse strains, and (c) adherence of reovirus to and their endocytosis by absorptive cells of suckling mice is determined by the viral hemagglutinin (sigma 1 protein).
This article was published in Gastroenterology and referenced in Journal of Vaccines & Vaccination

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