TPBG Antibody

Code CSB-RA669019A0HU
Size US$350Purchase it in Cusabio online store
(only available for customers from the US)
  • IHC image of CSB-RA669019A0HU diluted at 1:100 and staining in paraffin-embedded human placenta tissue performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4°C overnight. The primary is detected by a Goat anti-rabbit IgG polymer labeled by HRP and visualized using 0.05% DAB.
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Product Details


The recombinant TPBG antibody was prepared by obtaining the antibody genes, cloning the genes into a plasma vector to construct vector clone, transfecting the vector clone into a mammalian cell line for transient expression, and purifying the antibody by affinity-chromatography. This recombinant TPBG antibody has been verified to detect the TPBG protein from Human in the ELISA, IHC.

TPBG is an oncofetal cell surface glycoprotein that plays a role in cell migration and EMT. TPBG is limitedly expressed in normal tissue but overexpressed in diverse solid tumors. Upregulation of TPBG has been found in various types of malignancies including bladder, breast, and pancreas cancers, and is associated with a dismal clinical outcome. TPBG regulates cytoskeletal organization and cell motility in mammalian embryonic cell lines via modulating Wnt signaling and interacts with scaffolding protein to regulate cell-surface expression of receptor and transporter.

Uniprot No. Q13641
Target Names TPBG
Alternative Names Trophoblast glycoprotein (5T4 oncofetal antigen) (5T4 oncofetal trophoblast glycoprotein) (5T4 oncotrophoblast glycoprotein) (M6P1) (Wnt-activated inhibitory factor 1) (WAIF1), TPBG, 5T4
Species Reactivity Human
Immunogen A synthesized peptide derived from human 5T4
Immunogen Species Homo sapiens (Human)
Conjugate Non-conjugated
Clonality Monoclonal
Isotype Rabbit IgG
Clone No. 1D4
Purification Method Affinity-chromatography
Concentration It differs from different batches. Please contact us to confirm it.
Buffer Rabbit IgG in phosphate buffered saline, pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
Form Liquid
Tested Applications ELISA, IHC
Recommended Dilution
Application Recommended Dilution
IHC 1:50-1:200
Protocols ELISA Protocol
Immunohistochemistry (IHC) Protocol
Troubleshooting and FAQs Antibody FAQs
Storage Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.
Lead Time Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.

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Target Background

May function as an inhibitor of Wnt/beta-catenin signaling by indirectly interacting with LRP6 and blocking Wnt3a-dependent LRP6 internalization.
Gene References into Functions
  1. In extravillous trophoblasts, 5T4 may function in epithelial-to-mesenchymal transition during placentation. The role of syncytiotrophoblast 5T4 is unknown, but its abundance in shed syncytial vesicles may signify route of sensitization of the maternal immune system. PMID: 28481180
  2. Collectively, these findings demonstrate that an anti-5T4 antibody-drug conjugate reduces the fraction of cancer stem cells (CSC), and prevents local recurrence and suggest a novel therapeutic approach for patients with head and neck squamous cell carcinoma. PMID: 27780858
  3. We obtained GWS evidence (P < 2.7 x 10(-6)) for gene-based association in the total sample with a novel locus, TPBG (P = 1.8 x 10(-6)). PMID: 28183528
  4. In conclusion, the present study provided evidence that TPBG is involved in PDAC metastasis, and that TPBG and its associated signaling pathways may be a suitable target for pancreatic ductal adenocarcinoma therapy. PMID: 25738465
  5. 5T4 expression is mechanistically associated with the directional movement of cells through epithelial mesenchymal transition, facilitation of CXCL12/CXCR4 chemotaxis, blocking of canonical Wnt/beta-catenin while favouring non-canonical pathway signalling PMID: 25066861
  6. Tyrosine 325 plus the leucine-rich repeat 1 surface centered on a second exposed aromatic residue, phenylalanine 97, are essential for inhibition of Wnt/beta-catenin signaling. PMID: 24582434
  7. The surface expression of 5T4 marks the use of the CXCR4 rather than the CXCR7 receptor, with distinct consequences for CXCL12 exposure. PMID: 22956548
  8. 5T4 is a potential new antigen for targeted therapies such as immunotherapy in MPM, as it is overexpressed on mesothelioma cells and recognised by 5T4-specific cytotoxic T-cells. PMID: 22498111
  9. Glycosylation and epitope mapping of the 5T4 glycoprotein oncofoetal antigen PMID: 11903056
  10. Results sugest that 5T4 is a transient marker of human embryonic stem cell differentiation & that 5T4 phenotype, colony seeding density and culture conditions influence the maintenance of pluripotent hES cells and their differentiation to neural lineages. PMID: 16616918
  11. there is a repertoire of CD8 T cell recognition of 5T4 in normal human donors and some candidate HLA-A*0201 epitopes have been identified PMID: 16646078
  12. the mRNA expression of trophoblast glycoprotein is up-regulated in cells circulating within blood from women with preeclampsia. PMID: 17978129
  13. 5T4-based cancer vaccine: cytotoxic T lymphocyte epitopes identified in Trovax-vaccinated colorectal cancer patients PMID: 18567615
  14. colorectal cancer patients who had preexisting cell proliferative responses to 5T4 were longer-term survivors PMID: 18833005

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Subcellular Location Cell membrane; Single-pass type I membrane protein.
Tissue Specificity Expressed by all types of trophoblasts as early as 9 weeks of development. Specific for trophoblastic cells except for amniotic epithelium. In adult tissues, the expression is limited to a few epithelial cell types but is found on a variety of carcinoma.
Database Links

HGNC: 12004

OMIM: 190920

KEGG: hsa:7162

STRING: 9606.ENSP00000358765

UniGene: Hs.71947


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