Effect of Recombinant Murine Interferon-Beta on the Replication of Murine Cytomegalovirus

Abstract
Pretreatment of mouse embryo fibroblasts (MEF) with recombinant murine interferon-.beta. (rMuIFN-.beta.) induced a high level of intracellular 2'',5''-oligoadenylate (2-5A) synthetase activity. However, murine cytomegalovirus (MCMV) replicated under such condition, indicating that MCMV is relatively insensitive in vitro to rMuIFN-.beta.. Thus, there was a dissociation of 2-5A synthetase activity and antiviral activity against MCMV. In contrast to MCMV, the two parameters were closely associated in the case of vesicular stomatitis virus (VSV).