Abstract
The CD8+ cytotoxic T cell response to pathogens is thought to be CD4+ helper T cell independent because infectious agents provide their own inflammatory signals. Mice that lack CD4+ T cells mount a primary CD8 response to Listeria monocytogenes equal to that of wild-type mice and rapidly clear the infection. However, protective memory to a challenge is gradually lost in the former animals. Memory CD8+ T cells from normal mice can respond rapidly, but memory CD8+ T cells that are generated without CD4 help are defective in their ability to respond to secondary encounters with antigen. The results highlight a previously undescribed role for CD4 help in promoting protective CD8 memory development.
MeSH Terms
Adoptive Transfer
Animals
CD8-Positive T-Lymphocytes/immunology,transplantation
Cytotoxicity, Immunologic
Genes, MHC Class II
Immunization
Immunologic Memory
Interferon-gamma/biosynthesis
Listeria monocytogenes/genetics,immunology
Listeriosis/immunology
Mice
Mice, Inbred C57BL
Ovalbumin/biosynthesis,genetics,immunology
T-Lymphocyte Subsets/immunology
T-Lymphocytes, Helper-Inducer/immunology
Chemicals
Interferon-gamma
Ovalbumin
Authors & Affiliations
2 authors, click to expand affiliations / ORCID
Sun Joseph C
Department of Immunology and the Howard Hughes Medical Institute, University of Washington, Seattle, WA 98195, USA.
Bevan Michael J
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