Human Glypican 1 Antibody Summary
Accession # P35052
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Detection of Glypican 1 in MDA‑MB‑231 Human Cell Line by Flow Cytometry. MDA-MB-231 human breast cancer cell line was stained with Goat Anti-Human Glypican 1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4519, filled histogram) or isotype control antibody (Catalog # AB-108-C, open histogram), followed by Phycoerythrin-conjugated Anti-Goat IgG Secondary Antibody (Catalog # F0107).
Glypican 1 in MDA‑MB‑231 Human Cell Line. Glypican 1 was detected in immersion fixed MDA-MB-231 human breast cancer cell line using Goat Anti-Human Glypican 1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4519) at 10 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (red; Catalog # NL001) and counterstained with DAPI(blue). Specific staining was localized to cytoplasmic. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.
Preparation and Storage
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: Glypican 1
The Glypicans (glypiated proteoglycans) are a small multigene family of GPI-linked proteoglycans that play a key role in growth factor signaling (1, 2, 3, 4). There are six known mammalian Glypicans. They all share a common-sized protein core of 60‑70 kDa, an N-terminus which likely forms a compact globular domain, 14 conserved cysteines that form multiple intrachain disulfide bonds, and a number of C-terminal N- and O-linked carbohydrate attachment sites. Based on exon organization and the location of O-linked glycosylation sites, at least two subfamilies of Glypicans are known, with one subfamily containing Glypicans 1, 2, 4 and 6, and another subfamily containing Glypicans 3 and 5 (3, 5). Human Glypican 1 (GPC-1) is synthesized as a 558 amino acid (aa) preproprecursor that contains a 23 aa signal sequence, a 507 aa mature segment, and a 28 aa C-terminal prosegment (6, 7). There are two potential N-linked and four potential O-linked sites for glycosylation or glycanation. There are potentially two heparan sulfate (HS) modifications on GPC-1 that could contribute to a native molecular weight of approximately 200 kDa (7, 8, 9). Mature human GPC-1 shares 91% aa identity with mature mouse GPC-1. There are two potential splice variants of human GPC-1. Both show an alternate start site at Met73, while one has an additional 65 aa substitution for the C-terminal 264 amino acids (10, 11). Cells known to express GPC-1 include neurons, smooth and skeletal muscle cells, keratinocytes, osteoblasts, Schwann cells, immature dendritic cells, and tumor, plus tumor-associated vascular endothelial cells (8, 9, 12‑15). The function of GPC-1 is complex and varied. As a proteoglycan, it appears to make use of its HS adduct to impact select growth factor activity (16). This is accomplished by having juxtramembrane HS attachment sites, and a flexible, GPI-linkage (17). Data suggests GPC-1 and sulfation enzymes may collaborate to regulate FGF signaling. HS modules that are rich in 2-O- and 6-O- sulfate upregulate FGF-2 activation of FGFR1c (18). Similarly, FGF-1 requires both 2-O- and 6-O-sulfation to bind to FGFR2c and 3c. By contract, FGF-1 requires no sulfation to bind to FGFR2b, and FGF-8b needs only 6-O-sulfation to activate FGFR3c. Thus, many FGF receptor isoform specific effects may be attributed to an interaction between Glypican family members and the cell sulfation system (19).
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- Fransson, L-A. et al. (2004) Cell. Mol. Life Sci. 61:1016.
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- GenBank Accession # P35052.
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- Lories, V. et al. (1989) J. Biol. Chem. 264:7009.
- GenBank Accession # EAW71184.
- GenBank Accession # EAW71183.
- Chernousov, M.A. et al. (2006) J. Neurosci. 26:508.
- Wegrowski, Y. et al. (2006) Clin. Exp. Immunol. 144:485.
- Qiao, D. et al. (2003) J. Biol. Chem. 278:16045.
- Kayed, H. et al. (2006) Int. J. Oncol. 29:1139.
- Selleck, S.B. (2006) SciSTKE, April 4:pe17.
- Qiao, D. et al. (2003) J. Biol. Chem. 278:16045.
- Su, G. et al. (2006) Am. J. Pathol. 168:2014.
- Allen, B.L. and A.C. Rapraeger (2003) J. Cell Biol. 163:637.
Citations for Human Glypican 1 Antibody
R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.
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Receptor tyrosine kinase inhibitor Sunitinib and integrin antagonist peptide HM-3 show similar lipid raft dependent biphasic regulation of tumor angiogenesis and metastasis
Authors: J Hu, W Wang, C Liu, M Li, E Nice, H Xu
J. Exp. Clin. Cancer Res., 2019;38(1):381.
Sample Types: Cell Lysates
Applications: Western Blot
Overexpression of glypican-1 implicates poor prognosis and their chemoresistance in oesophageal squamous cell carcinoma
Authors: Hisashi Hara
Br J Cancer, 2016;115(1):66-75.
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