GSBS Student Publications


Attrition of T cell memory: selective loss of LCMV epitope-specific memory CD8 T cells following infections with heterologous viruses

UMMS Affiliation

Graduate School of Biomedical Sciences; Department of Pathology



Document Type


Medical Subject Headings

Animals; Antigens, Viral; CD8-Positive T-Lymphocytes; Cell Line, Transformed; Dimerization; Epitopes, T-Lymphocyte; H-2 Antigens; Immunodominant Epitopes; Immunoglobulin G; Immunologic Memory; Interferon Type II; Lymphocytic choriomeningitis virus; Major Histocompatibility Complex; Mice; Mice, Inbred BALB C; Mice, Inbred C57BL; Muromegalovirus; Pichinde virus; Receptors, Antigen, T-Cell, alpha-beta; Staining and Labeling; Vaccinia virus; Virus Diseases


Life Sciences | Medicine and Health Sciences


Using a variety of techniques, including limiting dilution assays (LDA), intracellular IFNgamma assays, and Db-IgG1 MHC dimer staining to measure viral peptide-specific T cell number and function, we show here that heterologous virus infections quantitatively delete and qualitatively alter the memory pool of T cells specific to a previously encountered virus. We also show that a prior history of a virus infection can alter the hierarchy of the immunodominant peptide response to a second virus and that virus infections selectively reactivate memory T cells with distinct specificities to earlier viruses. These results are consistent with a model for the immune system that accommodates memory T cell populations for multiple pathogens over the course of a lifetime.

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Citation: Immunity. 1999 Dec;11(6):733-42.

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Link to Article in PubMed

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