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Human TIGIT Recombinant Protein (RPES2480)

SKU:
RPES2480
Product Type:
Recombinant Protein
Species:
Human
$787
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Description

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Human TIGIT Recombinant Protein

TIGIT; also known as V-set and transmembrane domain-containing protein 3 (VSTM3) or V-set and immunoglobulin domain-containing protein 9 (VSIG9) is a new surface protein containing an immunoglobulin variable domain; a transmembrane domain and an immunoreceptor tyrosine-based inhibitory motif (ITIM). TIGIT is expressed on regulatory; memory; activated T cells and NK cells. It binds PVR with high affinity; and PVRL2 with lower affinity; but not PVRL3. Knockdown of TIGIT with siRNA in human memory T cells did not affect T cell responses; however; TIGIT inhibits NK cytotoxicity directly through its ITIM. TIGIT suppresses T cell activation by promoting the generation of mature immunoregulatory dendritic cells. The binding of PVR to TIGIT on human dendritic cells enhanced the production of IL-10 and diminished the production of IL-12p40. In addition; TIGIT counter inhibits the NK-mediated killing of tumor cells and protects normal cells from NK-mediated cytotoxicity thus providing an "alternative self" mechanism for MHC class I inhibition.Immune CheckpointImmune Checkpoint Targets   Co-inhibitory Immune Checkpoint Targets Immunotherapy   Cancer Immunotherapy   Targeted Therapy