The Role and Mechanism of Zinc-Sensitive Receptor GPR39 in Disease Occurrence and Treatment
WEN Xin1,2, TIE Yanqing2 *, WANG Shusong3 *
Zinc is an essential trace element for regulating human physiological activities and many metabolic processes. Zn2+, as a second messenger, is widely involved in cell proliferation and differentiation, nucleic acid and protein synthesis, and many other important physiological activities. Extracellular Zn2+ binds to a variety of cell surface proteins, the most notable of which is the zinc receptor, GPR39 (G protein-coupled receptor 39), for which Zn2+ is the only known endogenous ligand. GPR39 can activate Ca2+ signaling under the influence of Zn2+, leading to phosphorylation of ERK1/2 and AKT, and ultimately activating ERK/MAPK, AKT/PI3K and other downstream signal transduction pathways. This article will review the structure, function, signal transduction pathway of GPR39 and its role in disease development and treatment.