Neutralizing antibodies in Borna disease virus-infected rats
Hatalski, C.G. | Kliche, S. | Stitz, L. | Lipkin, W.I.
Borna disease is a neurologic syndrome caused by infection with a nonsegmented, negative-strand RNA virus, Borna disease virus. Infected animals have antibodies to two soluble viral proteins, p40 and p23, and a membrane-associated viral glycoprotein, gpl8. We examined the time course for the development of neutralization activity and the expression of antibodies to individual viral proteins in sera of infected rats. The appearance of neutralizing activity correlated with the development of immunoreactivity to gpl8, but not p40 or p23. Monospecific and monoclonal antibodies to native gpl8 and recombinant nonglycosylated gpl8 were also found to have neutralizing activity and to immunoprecipitate viral particles or subparticles. These findings suggest that gpl8 is likely to be present on the surface of the viral particles and is likely to contain epitopes important for virus neutralization.
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