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Proliferative expansion and acquisition of effector activity by memory CD4+ T cells in the lungs following pulmonary virus infection
Journal article   Peer reviewed

Proliferative expansion and acquisition of effector activity by memory CD4+ T cells in the lungs following pulmonary virus infection

Erika L Wissinger, Whitney W Stevens, Steven M Varga and Thomas J Braciale
The Journal of immunology (1950), Vol.180(5), pp.2957-2966
03/01/2008
DOI: 10.4049/jimmunol.180.5.2957
PMCID: PMC2855534
PMID: 18292518

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Abstract

The memory CD4+ T cell response to the respiratory syncytial virus (RSV) attachment (G) protein in the lungs of primed BALB/c mice undergoing challenge pulmonary RSV infection is dominated by effector T cells expressing a single Vbeta-chain, Vbeta14. We have used Vbeta14 expression to examine the kinetics of the activation, accumulation, and acquisition of the effector activity of memory CD4+ T cells responding to pulmonary infection. This analysis revealed that proliferative expansion and effector CD4+ T cell differentiation preferentially occur in the respiratory tract following rapid activation within and egress from the lymph nodes draining the respiratory tract. These findings suggest that, in response to natural infection at a peripheral mucosal site such as the lungs, memory CD4+ T cell expansion and differentiation into activated effector T cells may occur predominantly in the peripheral site of infection rather than exclusively in the lymph nodes draining the site of infection.
Animals CD4-Positive T-Lymphocytes - immunology CD4-Positive T-Lymphocytes - metabolism CD4-Positive T-Lymphocytes - pathology CD4-Positive T-Lymphocytes - virology Cell Movement - immunology Cell Proliferation Epitopes, T-Lymphocyte - immunology Female Genetic Vectors Immunologic Memory Kinetics Lung - immunology Lung - pathology Lung - virology Mice Mice, Inbred BALB C Respiratory Syncytial Virus Infections - immunology Respiratory Syncytial Virus Infections - metabolism Respiratory Syncytial Virus Infections - pathology Respiratory Syncytial Viruses - genetics Respiratory Syncytial Viruses - immunology Vaccinia virus - genetics Vaccinia virus - immunology Viral Envelope Proteins - administration & dosage Viral Envelope Proteins - genetics Viral Envelope Proteins - immunology

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