Kisspeptin

Kisspeptin refers to a family of endogenous peptides encoded by the KISS1 gene. It is best known for its role in reproductive endocrine signaling, especially its ability to stimulate gonadotropin-releasing hormone (GnRH) neurons in the hypothalamus. Research around kisspeptin examines puberty timing, fertility physiology, luteinizing hormone (LH) release, reproductive hormone feedback, and hypothalamic-pituitary-gonadal axis regulation.

Kisspeptin binds to the KISS1 receptor, also known as GPR54, on GnRH neurons and related signaling cells. Activation of this pathway can promote GnRH release, which then signals the pituitary to regulate LH and follicle-stimulating hormone (FSH). These hormones coordinate downstream gonadal steroid production and reproductive-cycle physiology. Kisspeptin is therefore studied as an upstream regulator of reproductive hormone signaling.

• GnRH pulse generation and hypothalamic reproductive signaling.
• LH and FSH regulation in reproductive endocrine models.
• Puberty onset, fertility physiology, and gonadal feedback loops.
• KISS1/GPR54 genetics and reproductive development research.
• Interactions between metabolism, energy status, and reproductive hormone signaling.

• de Roux N et al. Hypogonadotropic hypogonadism due to loss of function of the KiSS1-derived peptide receptor GPR54. Proceedings of the National Academy of Sciences, 2003.
• Seminara SB et al. The GPR54 gene as a regulator of puberty. New England Journal of Medicine, 2003.
• Oakley AE, Clifton DK, and Steiner RA. Kisspeptin signaling in the brain. Endocrine Reviews, 2009.