Anti-CaSR Antibody

Calcium sensing receptor, CaSR, is a unique G protein-coupled receptor activated by extracellular Ca2+, Mg2+, Sr2+, Mn2+, Ba2+, Ni2+, Al2+, Gd3+, amino acids, polyamines, pH and ionic strength (Quinn, S.J. et al., 1998). CaSR is a cell surface dimer located in the caveolin-rich plasma membrane domains (Kifor, O., et al., 1998). CaSR tightly regulates extracellular calcium levels to avoid hyper/hypo-calcemia through complex interactions with PTH, calcitonin, and vitamin D by balancing their effects on the parathyroid glands, bone, kidney, and intestine (Díaz-Soto, G. et al., 2016). Additionally, CaSR has been identified in the nervous system and recent studies suggest CaSR as a direct target of reducing Aβ42 secretion that may contribute to Alzheimer’s Disease (Armato, U., et al., 2013). Recent studies have shown CaSR negatively impacts the formation and progression of neuroblastomas by calcium exposure leading NB cells overexpressing CaSR to undergo apoptosis by means of activating ERK1/2 (Casalà, C., et al., 2013).