Kisspeptin
Upstream regulator of GnRH neurons and the hypothalamic-pituitary-gonadal axis.
Mechanism of Action
Kisspeptin is a neuropeptide encoded by the KISS1 gene. It binds to the G protein-coupled receptor KISS1R (formerly GPR54). Kisspeptin neurons in the arcuate and anteroventral periventricular (AVPV) nuclei are the primary upstream regulators of gonadotropin-releasing hormone (GnRH) neurons. By stimulating GnRH release, kisspeptin drives the secretion of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) from the anterior pituitary, making it a master regulator of reproductive endocrinology and pubertal onset.
Evidence Level
Clinical Trial - Human
1 study published
Pharmacology
Molecular Weight
~1299 Da (Kisspeptin-10)
Half-Life
~30 seconds (kisspeptin-10, IV); minutes (subcutaneous)
Bioavailability
Low oral; SC and IV used in research