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J. Virol., 02 1995, 684-694, Vol 69, No. 2
SA Stohlman, CC Bergmann, RC van der Veen and DR Hinton
Acute infection of the central nervous system by the neurotropic JHM strain
of mouse hepatitis virus (JHMV) induces nucleocapsid protein specific
cytotoxic T lymphocytes (CTL) not found in the periphery (S. Stohlman, S.
Kyuwa, J. Polo, D. Brady, M. Lai, and C. Bergmann, J. Virol. 67:7050-7059,
1993). Peripheral induction of CTL specific for the nucleocapsid protein of
JHMV by vaccination with recombinant vaccinia viruses was unable to provide
significant protection to a subsequent lethal virus challenge. By contrast,
the transfer of nucleoprotein-specific CTL protected mice from a subsequent
lethal challenge by reducing virus replication within the central nervous
system, demonstrating the importance of the CTL response to this epitope in
JHMV infection. Transfer of these CTL directly into the central nervous
system was at least 10-fold more effective than peripheral transfer.
Histological analysis indicated that the CTL reduced virus replication in
ependymal cells, astrocytes, and microglia. Although the CTL were
relatively ineffective at reducing virus replication in oligodendroglia,
survivors showed minimal evidence of virus persistence within the central
nervous system and no evidence of chronic ongoing demyelination.
Copyright © 1995, American Society for Microbiology
Mouse hepatitis virus-specific cytotoxic T lymphocytes protect from lethal infection without eliminating virus from the central nervous system
Department of Neurology, USC School of Medicine, Los Angeles 90033.
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