Gonadotropin-releasing hormone receptor (GnRHR)

The **gonadotropin-releasing hormone receptor** (**GnRHR**) is a seven-transmembrane G protein-coupled receptor primarily expressed on pituitary gonadotrope cells. It mediates the action of hypothalamic gonadotropin-releasing hormone (GnRH), which stimulates synthesis and secretion of luteinizing hormone (LH) and follicle-stimulating hormone (FSH). These hormones are essential for gametogenesis and steroidogenesis in both sexes. The activation pathway involves coupling with Gq/11 proteins leading to phospholipase C activation and downstream signaling cascades. Clinically, this target is modulated by both agonist and antagonist drugs for indications such as infertility treatment as well as sex steroid-dependent cancers. The original query referred to "luteinizing hormone release modulation," which describes a physiological process rather than a specific molecular entity; thus it should be mapped specifically to its canonical mediator—the **gonadotropin-releasing hormone receptor**[2][3][4].

Other names

Luteinizing hormone-releasing hormone receptorLHRHRGnRH receptorGNRHR

Agonists stimulate the GnRHR to increase LH/FSH secretion initially; chronic stimulation leads to desensitization/downregulation and suppression of gonadotropins. Antagonists block the GnRHR to immediately suppress LH/FSH secretion.