Biglycan (BGN) is a small leucine-rich repeat proteoglycan (SLRP) which is found in a variety of extracellular matrix tissues, including bone, cartilage and tendon. It is an important structural component of articular cartilage and participates in the assembly of the chondrocyte extracellular matrix through formation of protein interactions with type VI collagen and large proteoglycan aggregates. In humans, Biglycan is encoded by the BGN gene. It is mapped to Xq28. Biglycan is believed to play a role in the mineralisation of bone, and its core protein binds to the growth factors BMP-4 and influences its bioactivity. It has been reported that the presence of biglycan is necessary for BMP-4 to exert its effects on osteoblasts. There is also evidence that biglycan can bind to TGF-beta 1. In addition, Biglycan plays an important role in cell signaling. Sample Type: Cell culture supernates, serum, plasma (heparin, EDTA) and tissue homogenates Intended Use: For quantitative detection of human Biglycan in cell culture supernates, serum, plasma (heparin, EDTA) and tissue homogenates. Sensitivity: <10pg/ml Range: 156-10,000pg/ml Specificity: Natural and recombinant human Biglycan Test Principle: This human Biglycan BioAssay(TM) ELISA Kit was based on standard sandwich enzyme-linked immune-sorbent assay technology. A monoclonal antibody from mouse specific for Biglycan has been precoated onto 96-well plates. Standards(NSO, D38-K368) and test samples are added to the wells, a biotinylated detection polyclonal antibody from goat specific for Biglycan is added subsequently and then followed by washing with PBS or TBS buffer. Avidin-Biotin-Peroxidase Complex was added and unbound conjugates were washed away with PBS or TBS buffer. HRP substrate TMB was used to visualize HRP enzymatic reaction. TMB was catalyzed by HRP to produce a blue color product that changed into yellow after adding acidic stop solution. The density of yellow is proportional to the human Biglycan amount of sample captured in plate. Kit Components: 96-well plate precoated with human Biglycan antibody, 1 Lyophilized recombinant human Biglycan standard, 10ng/tube*2 Biotinylated human Biglycan antibody, 130ul (dilution 1:100) Avidin-Biotin-Peroxidase Complex (ABC), 130ul (dilution 1:100) Sample diluent buffer, 30ml Antibody diluent buffer, 12ml ABC diluent buffer, 12ml TMB color developing agent, 10ml TMB stop solution, 10ml Storage and Stability: Store powder at 4C liquid at -20C. Store other components at 4C. Stable for at least 6 months For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
