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Role of PD-1 in regulating T-cell immunity.
MedLine Citation:
PMID:  21061197     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
Programmed cell death-1 (PD-1) is a member of the CD28 superfamily that delivers negative signals upon interaction with its two ligands, PD-L1 or PD-L2. PD-1 and its ligands are broadly expressed and exert a wider range of immunoregulatory roles in T cells activation and tolerance compared with other CD28 members. Subsequent studies show that PD-1-PD-L interaction regulates the induction and maintenance of peripheral tolerance and protect tissues from autoimmune attack. PD-1 and its ligands are also involved in attenuating infectious immunity and tumor immunity, and facilitating chronic infection and tumor progression. The biological significance of PD-1 and its ligand suggests the therapeutic potential of manipulation of PD-1 pathway against various human diseases. In this review, we summarize our current understanding of PD-1 and its ligands ranging from discovery to clinical significance.
Authors:
Hyun-Tak Jin; Rafi Ahmed; Taku Okazaki
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Current topics in microbiology and immunology     Volume:  350     ISSN:  0070-217X     ISO Abbreviation:  Curr. Top. Microbiol. Immunol.     Publication Date:  2011  
Date Detail:
Created Date:  2011-06-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0110513     Medline TA:  Curr Top Microbiol Immunol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  17-37     Citation Subset:  IM    
Affiliation:
Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA 30322, USA.
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