The Journal of Experimental Medicine
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Published 6 September 2005. doi:10.1084/jem.20050227
Rockefeller University Press, 0022-1007 $8.00
JEM, Volume 202, Number 5, 697-706
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ARTICLE

Unexpected prolonged presentation of influenza antigens promotes CD4 T cell memory generation

Dawn M. Jelley-Gibbs, Deborah M. Brown, John P. Dibble, Laura Haynes, Sheri M. Eaton, and Susan L. Swain

Trudeau Institute Inc., Saranac Lake, NY 12983

CORRESPONDENCE Dawn M. Jelley-Gibbs: djgibbs{at}trudeauinstitute.org

The kinetics of presentation of influenza virus–derived antigens (Ags), resulting in CD4 T cell effector and memory generation, remains undefined. Naive influenza-specific CD4 T cells were transferred into mice at various times after influenza infection to determine the duration and impact of virus-derived Ag presentation. Ag-specific T cell responses were generated even when the donor T cells were transferred 3–4 wk after viral clearance. Transfer of naive CD4 T cells during early phases of infection resulted in a robust expansion of highly differentiated effectors, which then contracted to a small number of memory T cells. Importantly, T cell transfer during later phases of infection resulted in a modest expansion of effectors with intermediate phenotypes, which were capable of persisting as memory with high efficiency. Thus, distinct stages of pathogen-derived Ag presentation may provide a mechanism by which T cell heterogeneity is generated and diverse memory subsets are maintained.


Abbreviations used: Ag, antigen; CFSE, carboxyfluorescein diacetate succinimidyl ester; DLN, draining LN; HA, hemagglutinin; Tg, transgenic.


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