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The function of programmed cell death 1 and its ligands in regulating autoimmunity and infection

Nature ImmunologyPublished 15 February 2007
Arlene H. Sharpe, E. John Wherry, Rafi Ahmed, Gordon J. Freeman
Citations1,496
SJR quartileQ1
SJR score10.39
SNIP3.81

TL;DR

The functions of PD-1 and its ligands in regulating antimicrobial and self-reactive T cell responses are examined and the therapeutic potential of manipulating this pathway is discussed.

Abstract

The programmed cell death 1 (PD-1) surface receptor binds to two ligands, PD-L1 and PD-L2. Studies have shown that PD-1-PD-L interactions control the induction and maintenance of peripheral T cell tolerance and indicate a previously unknown function for PD-L1 on nonhematopoietic cells in protecting tissues from autoimmune attack. PD-1 and its ligands have also been exploited by a variety of microorganisms to attenuate antimicrobial immunity and facilitate chronic infection. Here we examine the functions of PD-1 and its ligands in regulating antimicrobial and self-reactive T cell responses and discuss the therapeutic potential of manipulating this pathway.

Keywords

Immunology and MicrobiologyMedicine