IGFBP-3 BioAssay(TM) ELISA Kit, Human

Sandwich ELISA quantitative detection kit for Human IGFBP-3 in cell culture supernates, serum and plasma (heparin, EDTA).\n\nInsulin-like growth factor (IGF)-binding protein-3 (IGFBP-3) is a major determinant of circulating levels of the IGFs and is clinically useful for the evaluation of GH deficiency and for predicting the response to GH treatment. The circulating level of IGFBP-3 is inversely related to the risk of several common cancers, and that antiproliferative agents such as antiestrogens and retinoids act in part by up-regulating IGFBP-3 gene (IGFBP3) expression.1 Insulin-like growth factor-binding protein (IGFBP)-3, well characterized as the carrier of insulin-like growth factor (IGF), has been reported to have intrinsic bioactivity that is independent of IGF binding. IGFBP-3 has an IGF-independent, antiproliferative effect in undifferentiated and early differentiated but not in terminally differentiated chondrocytes.2 IGFBP-3 possesses both growth-inhibitory and potentiating effects on cells that are independent of IGF action and are mediated through specific. IGFBP-3 binding proteins/receptors locate at the cell membrane, cytosol, or nuclear compartments and in the extrIGFBP-3llular matrix.3 IGFBP3 is also located on chromosome 7.4 The standard product used in this kit is recombinant human IGFBP-3, consisting of 265 amino acids with the molecular mass of 29kD. As a result of glycosylation, the molecular mass is 41kD.\n\nAssay Range:\n156.2pg/ml-10,000pg/ml\n\nSensitivity:\n< 10 pg/ml\n\nCrossreactivity:\nThere is no detectable cross-reactivity with other relevant proteins.\n\nUniprot ID:\nB3KPF0\n\nEntrez Gene ID:\n3486\n\nKit Components:\n96-well plate pre-coated with anti-IGFBP-3, Human\nLyophilized recombinant IGFBP-3, Human standard, 10ng/tube, 2Ea\nUSB Cat No Kit Component\n143696 Avidin-Biotin-Peroxidase Complex (ABC), 130ul (1:100 dilution)\n143697 Sample diluent buffer, 30ml\n143698 Antibody diluent buffer, 12ml\n143699 ABC diluent buffer, 12ml\n143700 TMB color developing agent, 10ml\n143701 TMB stop solution, 10ml\n\nStorage and Handling:\nStore at 4 degrees C for 6 months, at -20 degrees C for 12 months. Avoid multiple freeze-thaw cycles.

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SPECIFICATIONS

Catalog Number

143878

Size

96Tests

References

1. Deal, C.; Ma, J.; Wilkin, F.; Paquette, J.; Rozen, F.; Ge, B.; Hudson, T.; Stampfer, M.; Pollak, M. Novel promoter polymorphism in insulin-like growth factor-binding protein-3: correlation with serum levels and interaction with known regulators. J. Clin. Endocr. Metab. 86: 1274-1280, 2001. \n2. Spagnoli, A.; Torello, M.; Nagalla, S. R.; Horton, W. A.; Pattee, P.; Hwa, V.; Chiarelli, F.; Roberts, C. T., Jr.; Rosenfeld, R. G. Identification of STAT-1 as a molecular target of IGFBP-3 in the process of chondrogenesis. J. Biol. Chem. 277: 18860-18867, 2002. \n3. Weinzimer, S. A.; Gibson, T. B.; Collett-Solberg, P. F.; Khare, A.; Liu, B.; Cohen, P. Transferrin is an insulin-like growth factor-binding protein-3 binding protein. J. Clin. Endocr. Metab. 86: 1806-1813, 2001. \n4. Ehrenborg, E.; Larsson, C.; Stern, I.; Janson, M.; Powell, D. R.; Luthman, H. Contiguous localization of the genes encoding human insulin-like growth factor-binding proteins 1 (IGBP1) and 3 (IGBP3) on chromosome 7. Genomics 12: 497-502, 1992. \n