Sensory Adaptation in Naive Peripheral CD4 T Cells

T cell receptor interactions with peptide/major histocompatibility complex (pMHC) ligands control the selection of T cells in the thymus as well as their homeostasis in peripheral lymphoid organs. Here we show that pMHC contact modulates the expression of CD5 by naive CD4 T cells in a process that r...

Descripción completa

Detalles Bibliográficos
Autores principales: Smith, Katy, Seddon, Benedict, Purbhoo, Marco A., Zamoyska, Rose, Fisher, Amanda G., Merkenschlager, Matthias
Formato: Texto
Lenguaje:English
Publicado: The Rockefeller University Press 2001
Materias:
Original Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2195983/
https://www.ncbi.nlm.nih.gov/pubmed/11696591
Descripción
Sumario:T cell receptor interactions with peptide/major histocompatibility complex (pMHC) ligands control the selection of T cells in the thymus as well as their homeostasis in peripheral lymphoid organs. Here we show that pMHC contact modulates the expression of CD5 by naive CD4 T cells in a process that requires the continued expression of p56(lck). Reduced CD5 levels in T cells deprived of pMHC contact are predictive of elevated Ca(2)+ responses to subsequent TCR engagement by anti-CD3 or nominal antigen. Adaptation to peripheral pMHC contact may be important for regulating naive CD4 T cell responsiveness.

Ejemplares similares