PDGFRA / CD140a ELISA Pair Set, Human ELISA Pair Set

Background

PDGFRα, also known as CD140a, together with the structurally homolog protein PDGFRβ (CD140b), are cell surface receptors for members of the platelet-derived growth factor family. They are members of the class III subfamily of receptor tyrosine kinase (RTKs) with the similar structure characteristics of five immunoglobulin -like domains in their extracellular region and a split kinase domain in their intracellular region. PDGFRα is expressed in oligodendrocyte progenitor cells and mesothelial cell, and binds all three ligand isoforms PDGF-AA, PDGF-BB and PDGF-AB with high affinity, whereas PDGFRβ dose not bind PDGF-AA. PDGF binding induces the receptor homo- and hetero-dimerization as well as activation of the receptor, and subsequently activates c-Src tyrosine kinase which relays signals to PI 3 kinase and MAPK cascades. PDGFRα thus plays an essential role in regulating proliferation, chemotaxis and migration of mesangial cells. Recent studies have indicated that PDGF Rα acts as a critical mediator of signaling in testis organogenesis and Leydig cell differentiation, and in addition, particularly important for kidney development.