Recombinant Human IGFBP3

Stable at 2-8C, but best kept desiccated -20C. Upon reconstitution, stable for up to 1 week at 2-8C. For longer term, store in working aliquots at -20C-80C. Avoid repeated freeze/thaw cycles.

Insulin-like Growth Factor-Binding Protein 3(IGF-BP3) is a 30 kDa cysteine-rich secreted protein. It is the major IGF binding protein present in the plasma of human and animals and it is also found in alpha-granules of platelets. In addition to its ability to modulate the activity of IGF-I and IGF-II, IGF-BP3 exerts inhibitory effects on follicle stimulating hormone (FSH) activity. Decreased plasma levels of IGF-BP3 often results in dwarfism, whereas elevated levels of IGF-BP3 may lead to acromegaly. The expression of IGF-BP3 in fibroblasts is stimulated by mitogenic growth factors such as Bombesin, Vasopressin, PDGF, and EGF.

Centrifuge vial prior to opening. Add sterile distilled water or aqueous buffer to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at <=-20C. Further dilutions should be made in appropriate buffered solutions.

Less than 1EU/ug of rHuIGF-BP3 as determined by LAL method.