▶ KISSPEPTIN-10 · SUBTOPIC · MECHANISM
KISSPEPTIN-10 Mechanism
For Laboratory Research Use Only. The mechanistic information below is descriptive of published research. No human dose is recommended. No clinical claim is made.
MECHANISM OF ACTION
Ten-amino-acid C-terminal fragment of kisspeptin (encoded by KISS1). Direct GPR54 (KISS1R) agonist driving endogenous GnRH neuron firing and downstream LH/FSH release. Imperial College London reproductive-medicine research; investigational anti-anhedonia signal.
PHARMACOKINETIC HALF-LIFE
Reported half-life for KISSPEPTIN-10: Very short (minutes) plasma. Half-life determines the kinetic window across which receptor occupancy is maintained and frames the dosing rhythm used in published literature.
PRIMARY SEQUENCE
KISSPEPTIN-10 is a defined sequence: Tyr-Asn-Trp-Asn-Ser-Phe-Gly-Leu-Arg-Phe-NH₂. Synthesis proceeds via solid-phase peptide synthesis with HPLC-verified identity confirmation.
MECHANISTIC OUTCOMES IN LITERATURE
The following outcomes are the mechanistic endpoints reported in the peer-reviewed literature, with GIGARESEARCH evidence grades. Grades reflect study quality and replication, not clinical recommendation.
Dhillo 2005 JCEM · single SC kisspeptin-10 doses produce LH/FSH pulses.
Kisspeptin-54 (not 10) Phase 2 trigger for oocyte maturation in IVF (Abbara 2014/2017).
Restoration of LH pulsatility in hypothalamic amenorrhea reported in pilot trials.
MECHANISM Q+A
▶ What does kisspeptin do?
Kisspeptin-10 binds the KISS1R / GPR54 receptor on hypothalamic GnRH neurons, triggering Gαq signaling, neuronal depolarization, and downstream GnRH secretion. The result is a pulse of LH and FSH from the anterior pituitary, increasing gonadal steroid production.
▶ What's the difference between kisspeptin-10 and kisspeptin-54?
Kisspeptin-54 is the longer (54-residue) endogenous peptide; kisspeptin-10 is the shorter active fragment that is sufficient for receptor binding and biological activity. Both reduce to the same core C-terminal motif in vivo.
CITED LITERATURE
- Dhillo WS, Chaudhri OB, Patterson M, et al.. Kisspeptin-54 stimulates the hypothalamic-pituitary gonadal axis in human males. J Clin Endocrinol Metab 2005. PMID 15883247. link
- de Roux N, et al.. Hypogonadotropic hypogonadism due to loss of function of the KiSS1-derived peptide receptor GPR54. Proc Natl Acad Sci U S A 2003. PMID 12944565. link
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▶ LAST UPDATED · 2026-05-19