Description
Principle of the Assay: Mouse vitronectin will bind to the affinity purified capture antibody coated on the microtiter plate. Free and ligand bound enzyme will react with the antibody on the plate. After appropriate washing steps, biotinylated anti-mouse vitronectin primary antibody binds to the captured protein. Excess antibody is washed away and bound polyclonal antibody is reacted with peroxidase conjugated streptavidin. Following an additional washing step, TMB substrate is used for color development at 450nm. A standard calibration curve is prepared along with the samples to be measured using dilutions of mouse vitronectin. The amount of color development is directly proportional to the concentration of total vitronectin in the sample.
Background: Vitronectin is an abundant plasma glycoprotein that helps regulate coagulation, fibrinolysis, complement activation, and cell adhesion [1,3,7]. Vitronectin binds to glycosaminoglycans, collagen, plasminogen and urokinase receptors. It also may control the clearance of vascular thrombi by binding and stabilizing PAI-1. In binding PAI-1, it extends the lifetime of active PAI-1 [4,5]. Vitronectin may also be involved in the regulation of bone metabolism [2]