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  • Title: Anti-idiotypic antibody identifies the cellular receptor of reovirus type 3.
    Author: Gaulton G, Co MS, Greene MI.
    Journal: J Cell Biochem; 1985; 28(1):69-78. PubMed ID: 3875619.
    Abstract:
    The binding and subsequent infectivity of reovirus to target cells are mediated by interaction with specific cell surface viral receptors. To gain a more detailed understanding of the biochemistry of the reovirus receptor and the cellular consequences of viral attachment, we have studied the binding of type 3 reovirus (Dearing strain) in a quantitative manner utilizing an antiidiotypic antibody probe. A syngeneic monoclonal antiidiotypic antibody (87.92.6) was prepared by immunization with hybridoma cells which secrete an antireovirus hemagglutinin-specific antibody. This antiidiotypic antibody was previously shown to specifically recognize the cell surface receptor for reovirus type 3. In this report, we demonstrate that antiidiotype mimicked reovirus tropism in binding to murine thymomas; antiidiotype inhibited the binding of reovirus to specific targets, but not the binding of anti-H-2; and cross linking of receptor-bound antiidiotype by antiimmunoglobulin induced patching, but not capping of reovirus receptors. Utilizing radiolabeled antiidiotype, we next quantitate the number of reovirus receptors on R1.1 and YAC thymoma cells and, finally, report on the preliminary identification of the reovirus receptor as a 67,000-Da membrane glycoprotein.
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