Galanin receptor 2: A multifunctional modulator in neurological diseases - Structure, mechanisms, and therapeutic prospects.

Galanin receptor 2 (GALR2), as a subtype of neuropeptide galanin receptor, is predominantly expressed in the central and peripheral nervous systems. Accumulating evidence suggests that GALR2 is involved in the pathogenesis of depression, Alzheimer's disease, epilepsy, neuropathic pain, multiple sclerosis, as well as in neurological tumors. Here, we summarize the current knowledge on the molecular architecture, signal transduction mechanisms, and diverse biological functions of GALR2. In addition, we also discuss the involvement of GALR2 in neurological diseases, with a particular emphasis on evaluating its potential as a novel and viable therapeutic target for future drug development.