title: CD4 T-cell memory generation and maintenance.
abstract: Immunologic memory is the adaptive immune system's powerful ability to remember a previous antigen encounter and react with accelerated vigor upon antigen re-exposure. It provides durable protection against reinfection with pathogens and is the foundation for vaccine-induced immunity. Unlike the relatively restricted immunologic purview of memory B cells and CD8 T cells, the field of CD4 T-cell memory must account for multiple distinct lineages with diverse effector functions, the issue of lineage commitment and plasticity, and the variable distribution of memory cells within each lineage. Here, we discuss the evidence for lineage-specific CD4 T-cell memory and summarize the known factors contributing to memory-cell generation, plasticity, and long-term maintenance.
authors.affiliation: Department of Pathobiological Sciences; Comparative Biomedical Sciences Graduate Program, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA.
authors.forename: David J
authors.initials: DJ
authors.lastname: Gasper
authors.affiliation: Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA.
authors.forename: Melba Marie
authors.initials: MM
authors.lastname: Tejera
authors.affiliation: Department of Pathobiological Sciences; Comparative Biomedical Sciences Graduate Program, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA.
authors.forename: M
authors.initials: M
authors.lastname: Suresh
mesh_terms: D015496:CD4-Positive T-Lymphocytes / Q000276:immunology*; D006801:Humans; D007156:Immunologic Memory