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Homeostasis of Naive and Memory T Lymphocytes


Conventional CD4(+) and CD8(+) T lymphocytes comprise a mixture of naive and memory cells. Generation and survival of these T-cell subsets is under strict homeostatic control and reflects contact with self-major histocompatibility complex (MHC) and certain cytokines. Naive T cells arise in the thymus via T-cell receptor (TCR)-dependent positive selection to self-peptide/MHC complexes and are then maintained in the periphery through self-MHC interaction plus stimulation via interleukin-7 (IL-7). By contrast, memory T cells are largely MHC-independent for their survival but depend strongly on stimulation via cytokines. Whereas typical memory T cells are generated in response to foreign antigens, some arise spontaneously through contact of naive precursors with self-MHC ligands; we refer to these cells as memory-phenotype (MP) T cells. In this review, we discuss the generation and homeostasis of naive T cells and these two types of memory T cells, focusing on their relative interaction with MHC ligands and cytokines.

Type Journal
ISBN 1943-0264 (Electronic) 1943-0264 (Linking)
Authors Kawabe, T.; Yi, J.; Sprent, J.
Responsible Garvan Author Prof Jonathan Sprent
Publisher Name Cold Spring Harbor Perspectives in Biology
Published Date 2021-09-30
Published Volume 13
Published Issue 9
Published Pages a037879
Status Published in-print
DOI 10.1101/cshperspect.a037879
URL link to publisher's version