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J. Exp. Med.,
Volume 189, Number 10, May 17, 1999 1555-1564
By

From the * Department of Molecular and Experimental Medicine and the We have previously shown that interferon and tumor necrosis factor noncytopathically abolish
hepatitis B virus (HBV) replication from the hepatocyte and kidney tubular epithelial cells in
vivo. Here we show that a persistent lymphocytic choriomeningitis virus (LCMV) infection is
cleared from the hepatocyte noncytopathically when the same cytokines are induced in the
liver by antigen-nonspecific stimuli. These results indicate that, like HBV, LCMV is also susceptible to intracellular inactivation by cytokine-induced antiviral mechanisms that are operative in the hepatocyte. In contrast, LCMV is not cleared from intrahepatic nonparenchymal
cells or splenocytes, indicating that, unlike the hepatocyte, these cells do not produce the factors required to inactivate LCMV. Antiviral mechanisms like these may have evolved to maintain the functional integrity of vital organs in the face of massive infection.
Department of
Neuropharmacology, The Scripps Research Institute, La Jolla, California 92037
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