Epitopes described in "Cross-reactive influenza virus-specific CD8+ T cells contribute to lymphoproliferation in Epstein-Barr virus-associated infectious mononucleosis."

Reference
Article Authors:Shalyn C Clute; Levi B Watkin; Markus Cornberg; Yuri N Naumov; John L Sullivan; Katherine Luzuriaga; Raymond M Welsh; Liisa K Selin
Article Title:Cross-reactive influenza virus-specific CD8+ T cells contribute to lymphoproliferation in Epstein-Barr virus-associated infectious mononucleosis.
Reference Detail
Reference ID:1000190
Abstract:The marked proliferation of activated CD8+ T cells is pathognomonic of EBV-associated infectious mononucleosis (IM), common in young adults. Since the diversity and size of the memory CD8+ T cell population increase with age, we questioned whether IM was mediated by the reactivation of memory CD8+ T cells specific to previously encountered pathogens but cross-reactive with EBV. Of 8 HLA-A2+ IM patients, 5 had activated T cells specific to another common virus, as evidenced by a significantly higher number of peripheral blood influenza A virus M1(58-66)-specific T cells compared with healthy immune donors. Two patients with an augmented M1 response had tetramer-defined cross-reactive cells recognizing influenza M1 and EBV-BMLF1(280-288), which accounted for up to one-third of their BMLF1-specific population and likely contributed to a skewed M1-specific T cell receptor repertoire. These epitopes, with only 33% sequence similarity, mediated differential effects on the function of the cross-reactive T cells, which may contribute to alterations in disease outcome. EBV could potentially encode an extensive pool of T cell epitopes that activate other cross-reactive memory T cells. Our results support the concept that cross-reactive memory CD8+ T cells activated by EBV contribute to the characteristic lymphoproliferation of IM.
Affiliations:Department of Pathology, Program in Immunology and Virology, University of Massachusetts Medical School, Worcester, Massachusetts 01655, USA.
Date:2005
Reference Type:Literature
PubMed ID:16308574
Journal:J Clin Invest
Journal Volume:115
Article Pages:3602-12
Journal ISSN:0021-9738
Article Chemical List:gov.nih.nlm.ncbi.www.jaxb.impl.NameOfSubstanceImpl@7dbdba31;gov.nih.nlm.ncbi.www.jaxb.impl.NameOfSubstanceImpl@330b2775;gov.nih.nlm.ncbi.www.jaxb.impl.NameOfSubstanceImpl@214b8c81;gov.nih.nlm.ncbi.www.jaxb.impl.NameOfSubstanceImpl@66f57a3a;gov.nih.nlm.ncbi.www.jaxb.impl.NameOfSubstanceImpl@7e2baaa4;gov.nih.nlm.ncbi.www.jaxb.impl.NameOfSubstanceImpl@64d035b2;gov.nih.nlm.ncbi.www.jaxb.impl.NameOfSubstanceImpl@21756cd3
Article MeSH List:Adolescent; Adult; CD8-Positive T-Lymphocytes(cytology; immunology; metabolism; virology); Cell Proliferation; Chemokine CCL4; Dose-Response Relationship, Drug; Enzyme-Linked Immunosorbent Assay; Epitopes(chemistry); Flow Cytometry; Genes, MHC Class I; HLA-A2 Antigen(chemistry); Herpesvirus 4, Human(metabolism); Humans; Immunologic Memory; Infectious Mononucleosis(virology); Influenza A virus(immunology); Interferon-gamma(metabolism); K562 Cells; Leukocytes, Mononuclear(cytology); Lymphocyte Activation; Lymphocytes(cytology; virology); Macrophage Inflammatory Proteins(metabolism); Orthomyxoviridae(genetics); Peptides(chemistry); Receptors, Antigen, T-Cell(metabolism); T-Lymphocytes(immunology; virology); Time Factors
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