Kisspeptin Research Overview (also known as Metastin, KP-54, KISS1 peptide, Kisspeptin-10, KP-10)

What Is Kisspeptin?

Kisspeptin is a family of neuropeptides processed from the KISS1 gene product that serve as the essential upstream regulator of the hypothalamic-pituitary-gonadal (HPG) axis. Discovered in 2003, Kisspeptin neurons in the hypothalamus receive signals from sex steroids, energy status, and circadian systems and translate them into GnRH pulses governing reproduction. Without Kisspeptin signaling, the entire reproductive axis is silent.

Role in Reproductive Physiology

Kisspeptin neurons in two hypothalamic populations integrate hormonal feedback and environmental signals to modulate GnRH secretion frequency and amplitude. Inactivating mutations in KISS1 or its receptor produce complete hypogonadotropic hypogonadism in humans, establishing Kisspeptin as the master regulator of fertility. Its signaling is also responsive to energy availability — leptin, ghrelin, and metabolic status all modulate Kisspeptin neuron activity, explaining why extreme undernutrition suppresses reproductive function.

Clinical Research

Kisspeptin-10 and Kisspeptin-54 are in clinical trials for infertility treatment, IVF ovulation triggering, and hypothalamic amenorrhea — where Kisspeptin infusion restores LH pulsatility and menstrual function in women with stress- or exercise-related loss of reproductive cycling.

Quick Reference

Research Indications

Research Protocols

As reported in cited literature and research-community logs (see Research Citations below), not a personal dosing recommendation.

Peptide Interactions

Reported Research Time Points

Safety Notes

Included for harm-reduction awareness only, in the event this compound is encountered outside its labeled research use. Inclusion here does not imply RUO Codes endorses, recommends, or instructs human use.

Quality Indicators

Research Citations

• Effects of Kisspeptin on Sexual Brain Processing and Penile Tumescence in Men With Hypoactive Sexual Desire Disorder
  Comninos, A.N., Wall, M.B., Demetriou, L., et al., 2023, JAMA Network Open
• Effects of Kisspeptin Administration in Women With Hypoactive Sexual Desire Disorder
  Comninos, A.N., Wall, M.B., Demetriou, L., et al., 2022, JAMA Network Open
• Kisspeptin-54 triggers egg maturation in women undergoing in vitro fertilization
  Jayasena, C.N., Abbara, A., Comninos, A.N., et al., 2014, Journal of Clinical Investigation
• Use of kisspeptin to trigger oocyte maturation during in vitro fertilisation (IVF) treatment
  Abbara, A., Eng, P.C., Phylactou, M., et al., 2022, Frontiers in Endocrinology
• Hypogonadotropic hypogonadism due to loss of function of the KiSS1-derived peptide receptor GPR54
  de Roux, N., Genin, E., Carel, J.C., et al., 2003, Proceedings of the National Academy of Sciences
• The GPR54 gene as a regulator of puberty
  Seminara, S.B., Messager, S., Chatzidaki, E.E., et al., 2003, New England Journal of Medicine
• Impaired kisspeptin signaling decreases metabolism and promotes glucose intolerance and obesity
  Tolson, K.P., Garcia, C., Yen, S., et al., 2014, Journal of Clinical Investigation
• Kisspeptins: a multifunctional peptide system with a role in reproduction, cancer and the cardiovascular system
  Mead, E.J., Maguire, J.J., Kuc, R.E., Davenport, A.P., 2007, British Journal of Pharmacology
• KISS1/KISS1R in cancer: Friend or foe?
  Guzman, S., Brackstone, M., Radovick, S., Babwah, A.V., Bhattacharya, M.M., 2012, Frontiers in Endocrinology
• Potent Vasoconstrictor Kisspeptin-10 Induces Atherosclerotic Plaque Progression and Instability
  Dong, F., Zhao, Y., Li, W., et al., 2017, Journal of the American Heart Association
• Emerging Therapeutic Potential of Kisspeptin and Neurokinin B
  Mills, E.G.A., Dhillo, W.S., Comninos, A.N., 2024, Endocrine Reviews
• Intranasal kisspeptin administration rapidly stimulates gonadotropin release in humans
  Abbara, A., Horton, R., Turnbull, P., et al., 2025, eBioMedicine