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1996-02-27
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Document 0519
DOCN M9630519
TI CD8+ T-cell epitopes within the surface glycoprotein of a neurotropic
coronavirus and correlation with pathogenicity.
DT 9603
AU Castro RF; Perlman S; Department of Microbiology, University of Iowa,
Iowa City 52242,; USA.
SO J Virol. 1995 Dec;69(12):8127-31. Unique Identifier : AIDSLINE
MED/96079072
AB CD8+ T cells with cytotoxic activity against the surface glycoprotein
(S) of mouse hepatitis virus, strain JHM, have been identified in the
central nervous system (CNS) of both acutely and chronically infected
C57BL/6 mice. In this report, two specific epitopes recognized by these
CNS-derived cells were identified, using a panel of peptides chosen
because they conformed to the allele-specific binding motif for MHC
class I H-2Kb and H-2Db. The active peptides encompassed residues 510 to
518 (CSLWNGPHL, H-2Db) and 598 to 605 (RCQIFANI, H-2Kb). Both epitopes
are located within the region of the S protein previously shown to be
prone to deletion after passage in animals. These deleted strains are
generally less neurovirulent than the wild-type virus but still are able
to cause demyelination. Since C57BL/6 mice become persistently infected
more commonly than many other strains of mice, these data are consistent
with a role for CD8+ T-cell escape mutants in the pathogenesis of the
demyelinating disease. This is the first report of CD8+ T-cell epitope
localization within the S protein, the protein most strongly implicated
thus far in pathogenesis in the host.
DE Amino Acid Sequence Animal Base Sequence
Brain/*IMMUNOLOGY/PATHOLOGY/*VIROLOGY Coronavirus
Infections/*IMMUNOLOGY/PATHOLOGY Cytotoxicity, Immunologic
CD8-Positive T-Lymphocytes/*IMMUNOLOGY/VIROLOGY DNA Primers DNA,
Viral/ANALYSIS Epitopes/*ANALYSIS Gastroenteritis Virus,
Murine/*IMMUNOLOGY/ISOLATION & PURIF/ *PATHOGENICITY Genes, Viral H-2
Antigens/CHEMISTRY/*IMMUNOLOGY Major Histocompatibility Complex Mice
Mice, Inbred BALB C Mice, Inbred C57BL Molecular Sequence Data
Mutagenesis Polymerase Chain Reaction Sequence Deletion Support, U.S.
Gov't, P.H.S. Viral Structural Proteins/CHEMISTRY/*IMMUNOLOGY JOURNAL
ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).