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J. Virol., Mar 1995, 1429-1434, Vol 69, No. 3
S Hou, XY Mo, L Hyland and PC Doherty
The development of Sendai virus-specific cytotoxic T-lymphocyte (CTL)
effectors and precursors (CTLp) has been compared for mice that are
homozygous (-/-) for a disruption of the H-2I-Ab class II major
histocompatibility complex glycoprotein and for normal (+/+) controls. The
generation of CD8+ CTLp was not diminished in the -/- mice, though they
failed to make virus-specific immunoglobulin G class antibodies. While the
cellularity of the regional lymph nodes was decreased, the inflammatory
process assayed by bronchoalveolar lavage (BAL) of the pneumonic lung was
not modified, and potent CTL effectors were present in BAL populations
recovered from both groups at day 10 after infection. There was little
effect on virus clearance. Production of interleukin-2 by both freshly
isolated BAL inflammatory cells and cultured lymph node cells was greatly
diminished, though the -/- mice still made substantial levels of gamma
interferon. However, treating the mice with a single dose of a monoclonal
antibody to this cytokine, at least some of which is made by CD8+ T cells,
did not decrease CTLp frequencies. As found previously with CD4-depleted
H-2b mice, the development of Sendai virus-specific CD8+ T-cell-mediated
immunity is not compromised by the absence of a concurrent class II major
histocompatibility complex-restricted response.
Copyright © 1995, American Society for Microbiology
Host response to Sendai virus in mice lacking class II major histocompatibility complex glycoproteins
Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105.
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