Recombinant Human T-cell immunoreceptor with Ig and ITIM domains (TIGIT), partial

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Code CSB-EP675446HU
Size US$306
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  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
  • Based on the SEQUEST from database of E.coli host and target protein, the LC-MS/MS Analysis result of CSB-EP675446HU could indicate that this peptide derived from E.coli-expressed Homo sapiens (Human) TIGIT.
  • Based on the SEQUEST from database of E.coli host and target protein, the LC-MS/MS Analysis result of CSB-EP675446HU could indicate that this peptide derived from E.coli-expressed Homo sapiens (Human) TIGIT.
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Product Details

Greater than 90% as determined by SDS-PAGE.
Target Names
Uniprot No.
Research Area
Alternative Names
DKFZp667A205; ENSMUSG00000071552; FLJ39873; RGD1563191; T cell immunoreceptor with Ig and ITIM domains; TIGIT; TIGIT_HUMAN; V-set and immunoglobulin domain containing 9; V-set and immunoglobulin domain-containing protein 9; V-set and transmembrane domain containing 3; V-set and transmembrane domain-containing protein 3; VSIG9; VSTM3; Washington University cell adhesion molecule; WUCAM
Homo sapiens (Human)
Expression Region
Target Protein Sequence
Note: The complete sequence including tag sequence, target protein sequence and linker sequence could be provided upon request.
Mol. Weight
26.0 kDa
Protein Length
Extracellular Domain
Tag Info
N-terminal 6xHis-SUMO-tagged
Liquid or Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Tris-based buffer,50% glycerol
Troubleshooting and FAQs
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time
3-7 business days
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet & COA
Please contact us to get it.

The recombinant Human TIGIT protein is encoded by the gene of TIGIT (22-141aa). The gene of TIGIT was cloned in a system (E.coli) that supported the expression of TIGIT and translation of messenger RNA. Modification of TIGIT by recombinant DNA technology could lead to the expression of the target protein. The protein was fused with N-terminal 6xHis-SUMO tag in the production. The purity is 90% determined by SDS-PAGE.

TIGIT (VSIG9, VSTM3) is a protein coding gene that encodes T-cell immunoreceptor with Ig and ITIM domains. According to some studies, TIGIT may have the following features.
TIGIT, an inhibitory receptor expressed on lymphocytes, has recently been proposed as a major emerging target for cancer immunotherapy. TIGIT has an intrinsic suppressive function of T cells. The surface protein TIGIT inhibits T cell activation by promoting the generation of mature immunoregulatory dendritic cells. TIGIT is a key inhibitor of the cancer immune cycle. The immunosensor TIGIT regulates antitumor and antiviral CD8+ T cell effector functions. The TIGIT/CD226 axis regulates human T cell function. Interaction of TIGIT with PVR and PVRL2 inhibits human NK cell cytotoxicity. TIGIT, a new immunotherapy target, is moving from the lab to the bedside.

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Target Background

Binds with high affinity to the poliovirus receptor (PVR) which causes increased secretion of IL10 and decreased secretion of IL12B and suppresses T-cell activation by promoting the generation of mature immunoregulatory dendritic cells.
Gene References into Functions
  1. The activation of PD-1 and TIGIT may exert negative regulatory effects and inhibit the immune response to cancer cells, resulting in immune escape of cancer cells. PMID: 30262800
  2. These findings highlight the importance of the TIGIT/CD226/PVR axis as an immune checkpoint barrier that could hinder future "cure" strategies requiring potent HIV-specific CD8(+) T cells PMID: 28084312
  3. High expression of TIGIT and Helios identifies CD4+ T cells with impaired immunological functions, primarily among patients with an advanced stage of Sezary syndrome. PMID: 27592800
  4. Natural killer cells and cytotoxic T cells express both TIGIT and DNAM-1 receptors, and in certain cases their effector functions are dictated by TIGIT or DNAM-1 signaling. Agonist and antagonist antibodies targeting either TIGIT or DNAM-1 present many therapeutic options for diseases spanning from cancer to auto-immunity. (Review) PMID: 28035916
  5. TIGIT contributes to functional T-cell impairment and associates with poor clinical outcome in acute myelogenous leukemia. The study suggests that blockade of TIGIT to restore T-cell function and antitumor immunity may represent a novel effective leukemia therapeutic. PMID: 26763253
  6. Blimp-1 binds to the promoters of PD-1 and TIGIT and positively regulates their expression in patients with acute myeloid leukemia. PMID: 28629373
  7. Data show that gastric cancer cells inhibit T-cell metabolism through CD155/TIGIT signaling. PMID: 28883004
  8. Our data provide important structural and biochemical determinants responsible for the recognition of nectin-2 by TIGIT. PMID: 27978489
  9. TIGIT is a powerful negative regulator of CD4(+) T cells in systemic lupus erythematosus. PMID: 28108989
  10. TIGIT signaling in NK cells after MDSC coculture led to a decrease in the phosphorylation of ZAP70/Syk and ERK1/2. PMID: 27503932
  11. energetic basis for the TIGIT/nectin-2 interaction and revealed that an "aromatic key" of nectin-2 is critical for this interaction, whereas variations in the lock were tolerated. PMID: 28515320
  12. TIGIT-positive circulating follicular helper T cells display robust B-cell help functions: potential role in sickle cell alloimmunization. PMID: 26250578
  13. implying that TIGIT exerts immunosuppressive effects by competing with DNAM-1 for the same ligand, CD155 PMID: 26842126
  14. These findings identify TIGIT as a novel marker of dysfunctional HIV-specific T cells PMID: 26741490
  15. This study shows that HBZ-induced TIGIT plays a pivotal role in attenuating host immune responses and shaping a microenvironment favorable to human T-cell leukemia virus type 1. PMID: 26735971
  16. a novel mechanism that links TIGIT expression with NK-cell functional heterogeneity, and this mechanism might partially explain why individuals have different susceptibilities to infection, autoimmune disease, and cancer. PMID: 26171588
  17. Human regulatory T cells expressing the receptors TIGIT and CD226 display widely divergent phenotypes in regard to expansion and activation. PMID: 25994968
  18. TIGIT and PD-1 blockade additively increased proliferation, cytokine production, and degranulation of tumor-antigen-specific CD8 T cells and CD8 TILs. TIGIT and PD-1 regulate the expansion and function of these T cells in melanoma. PMID: 25866972
  19. The results identify a bacterium-dependent, tumor-immune evasion mechanism in which tumors exploit the Fap2 protein of F. nucleatum to inhibit immune cell activity via TIGIT. PMID: 25680274
  20. Findings suggest that TIGIT is a key checkpoint inhibitor of chronic antiviral and antitumor responses through impairing CD226 function when disrupting its homodimerization. PMID: 25465800
  21. TIGIT/PVR ligation signaling mediates suppression of IFN-gamma production via the NF-kappaB pathway. PMID: 24817116
  22. TIGIT is phosphorylated at its cytoplasmic tail after its ligation with PVR. PMID: 23154388
  23. The Tim-3 pathway appears to control regulatory (Treg) and effector T cell balance via altering cell proliferation and apoptosis during hepatitis C virus infection. PMID: 22706088
  24. TIGIT can inhibit T cell functions by competing with CD226 and can also directly inhibit T cells in a T cell-intrinsic manner. PMID: 22427644
  25. data suggest a cis-trans receptor clustering mechanism for cell adhesion and signaling by the TIGIT/PVR complex and provide structural insights into how the PVR family of immunoregulators function PMID: 22421438
  26. that soluble Vstm3 attenuates T-cell responses in vitro and in vivo PMID: 21416464
  27. TIGIT exerts immunosuppressive effects by binding to poliovirus receptor and modulating cytokine production by dendritic cells. PMID: 19011627
  28. a novel immunoreceptor, Washington University Cell Adhesion Molecule, which is expressed on human follicular B helper T cells, was described. PMID: 19197944
  29. 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. PMID: 19815499

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Subcellular Location
Cell membrane; Single-pass type I membrane protein.
Tissue Specificity
Expressed at low levels on peripheral memory and regulatory CD4+ T-cells and NK cells and is up-regulated following activation of these cells (at protein level).
Database Links

HGNC: 26838

OMIM: 612859

KEGG: hsa:201633

STRING: 9606.ENSP00000373167

UniGene: Hs.421750

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