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Journal ArticleDOI

PD-1 inhibits T-cell receptor induced phosphorylation of the ZAP70/CD3ζ signalosome and downstream signaling to PKCθ

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TLDR
It is demonstrated that PD‐1 modulation of T‐cell function involves inhibition of TCR‐mediated phosphorylation of ZAP70 and association with CD3ζ andPD‐1 signaling attenuates PKCθ activation loop phosphorylated in a cognate TCR signal.
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This article is published in FEBS Letters.The article was published on 2004-09-10. It has received 627 citations till now. The article focuses on the topics: Immunoreceptor tyrosine-based activation motif & Immunoreceptor tyrosine-based inhibitory motif.

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PD-1 and its ligands in tolerance and immunity

TL;DR: Current understanding of the immunoregulatory functions of PD-1 and its ligands and their therapeutic potential are discussed and an inhibitory bidirectional interaction between PD-L1 and B7-1 is discovered, revealing new ways the B7:CD28 family regulates T cell activation and tolerance.
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Molecular mechanisms of T cell co-stimulation and co-inhibition

TL;DR: The mechanisms through which T cell activation, differentiation and function is controlled by co-stimulatory and co-inhibitory receptors are reviewed.
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Fundamental Mechanisms of Immune Checkpoint Blockade Therapy

TL;DR: The current state of understanding of T-cell costimulatory mechanisms and checkpoint blockade, primarily of CTLA4 and PD-1, is reviewed, and conceptual gaps in knowledge are highlighted.
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The PD-1 pathway in tolerance and autoimmunity

TL;DR: This review highlights how PD‐1 and its ligands defend against potentially pathogenic self‐reactive effector T cells by simultaneously harnessing two mechanisms of peripheral tolerance: (i) the promotion of Treg development and function and (ii) the direct inhibition of potentially pathogen self-reactive T cells that have escaped into the periphery.
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CTLA-4 and PD-1 receptors inhibit T-cell activation by distinct mechanisms

TL;DR: In this paper, CTLA-4 and PD-1 signaling inhibited Akt phosphorylation by preventing CD3/CD28-mediated upregulation of glucose metabolism and Akt activity, but each accomplished this regulation using separate mechanisms.
References
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Journal ArticleDOI

Autoimmune Dilated Cardiomyopathy in PD-1 Receptor-Deficient Mice

TL;DR: Results indicate that PD-1 may be an important factor contributing to the prevention of autoimmune diseases and high-titer circulating IgG autoantibodies reactive to a 33-kilodalton protein expressed specifically on the surface of cardiomyocytes.
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Expression of the PD-1 antigen on the surface of stimulated mouse T and B lymphocytes

TL;DR: The results suggest that the expression of thePD-1 antigen is tightly regulated and induced by signal transduction through the antigen receptor and do not exclude the possibility that the PD- 1 antigen may play a role in clonal selection of lymphocytes although PD-1 expression is not required for the common pathway of apoptosis.
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The ‘Shp'ing news: SH2 domain-containing tyrosine phosphatases in cell signaling

TL;DR: A small, highly conserved subfamily of protein-tyrosine phosphatases, members of which are present in both vertebrates and invertebrates, and the key targets of each Shp have remained elusive are identified.
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