CD222 Mouse anti-Human, Alexa Fluor 647, Clone: MEM-238, BD

Description

• The MEM-238 monoclonal antibody specifically binds to CD222, which is also known as the Insulin-like growth factor 2 Receptor (IGF2R, IGF-II Receptor), Cation-independent mannose 6-phosphate receptor (CIMPR), or Mannose-6 phosphate receptor (M6PR)
• CD222 is ubiquitously expressed by a variety of cell types as a cell surface type I transmembrane glycoprotein
• However, in the course of receptor trafficking between the cell surface and intracellular compartments, the majority of CD222 is found within cells
• Cell surface CD222 functions as a multifunctional receptor that binds to a large number of extracellular ligands including acid hydrolases, insulin-like growth factors, latent TGF- β, leukemia inhibitory factor (LIF), proliferin, prorenin, plasminogen, and Herpes simplex vir us
• It regulates extracellular Insulin-like growth factor II (IGF-II/IGF-2) levels by binding and internalizing the growth factor for lysosomal degradation
• This effectively removes IGF-II from the circulation and tissues and thus prevents it from signaling through the growth-stimulatory Insulin-like growth factor I Receptor (IGF-1R, CD221) pathway
• However, studies have reported that IGF-II may activate some cellular functions through CD222 as well
• A soluble form of the CD222 extracellular region can also be detected in human serum and may play a role in regulating IGF-II activity
• CD222 serves as a surface receptor for latent TGFβ and can complex with plasminogen and CD87, a urokinase-type plasminogen activator receptor, to activate latent TGF- β
• CD222 also binds to a variety of Mannose 6-phosphate (M6P)-containing proteins, including extracellular and newly-synthesized lysosomal enzymes, and transports them to lysosomes.