Affiliation:
1. Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana 59840
Abstract
ABSTRACT
Recovery from leukemia induced by Friend virus complex (FV) requires strong CD4
+
helper, CD8
+
cytotoxic T-lymphocyte, and B-cell responses. The development of these immune responses is dependent on the major histocompatibility complex (MHC) (
H-2
) genotype of the mouse. In
H-2
b/b
mice, which spontaneously recover from FV-induced erythroleukemia, neutralization of gamma interferon (IFN-γ) in vivo inhibited recovery, which indicated that IFN-γ was a necessary component of the immune response to FV. Furthermore, in
H-2
b/b
mice, high numbers of IFN-γ-producing cells were detected after FV infection, whereas in
H-2
a/b
mice, which have a low-recovery phenotype, only low numbers of IFN-γ-producing cells were detected. Similarly,
H-2
bm14/b
mice, which cannot recover from FV infection due to a point mutation in one allele of the
H-2D
b
gene, also had low numbers of IFN-γ-producing T cells. Surprisingly, this effect was observed for both CD8
+
and CD4
+
T cells. These findings reveal a novel influence of MHC class I genes on CD4
+
T-cell responses to viral infection. Furthermore, the influence of MHC class I genotype on the generation of both IFN-γ-producing CD4
+
and CD8
+
T cells helps explain the major impact of the
H-2D
gene on recovery from FV disease.
Publisher
American Society for Microbiology
Subject
Virology,Insect Science,Immunology,Microbiology
Cited by
26 articles.
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