Heparan sulfate proteoglycans (HSPGs) can be divided into general categories of
cell-associated forms, including syndecans, glypicans, and secreted extracellular matrix forms, such as perlecan. Glypicans contain six family members to date and are proteins bound to the outer surface of the plasma membrane by a glycosyl-phosphatidylinositol anchor and involved in cellular adhesion and migration and function as accessory molecules for signaling receptors, (Filmus, 2008 & Gui, 2006). Current publications indicate the main function of membrane-attached glypicans is to regulate the signaling of Wnts, Hedgehogs, fibroblast growth factors and bone morphogenetic proteins (BMPs), (Filmus, 2008).Glypican-1 (GPC1) is over-expressed in human gliomas and appears to have a greater capability of promoting FGF-2 signaling in some gliomas versus HSPGs in normal astrocytes. Additional observations suggest that GPC1 can impact the growth of pancreatic cancer cells by attenuating tumor angiogenesis, (Whipple, 2008).
Applications:
Suitable for use in Western Blot and Immunoprecipitation. Other applications not tested.
Recommended Dilution:
Western Blot: 0.5ug/ml
Immunoprecipitation: 1:50
Optimal dilutions to be determined by the researcher.
Storage and Stability:
May be stored at 4 degrees C for short-term only. For long-term storage and to avoid repeated freezing and thawing, aliquot and store at -20 degrees C. Aliquots are stable for at least 12 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.