Kisspeptin-10

Also known as: KP-10, Metastin fragment

Kisspeptin-10 (KP-10), a decapeptide fragment of the metastin/kisspeptin-1 protein, acts as a potent agonist at the KISS1 receptor (KISS1R, GPR54). Its primary mechanism involves binding to KISS1R on hypothalamic gonadotropin-releasing hormone (GnRH) neurons, thereby stimulating GnRH secretion. This positions KP-10 as a critical upstream regulator of the hypothalamic-pituitary-gonadal (HPG) axis, modulating downstream luteinizing hormone (LH) and follicle-stimulating hormone (FSH) release. Key research findings from clinical trials demonstrate that exogenous KP-10 administration reliably increases LH and FSH levels in healthy adults, with effects dependent on dose and baseline reproductive status. Studies have explored its utility in diagnosing and treating hypogonadotropic hypogonadism, including conditions such as functional hypothalamic amenorrhea and delayed puberty. Additionally, KP-10 has been investigated for its role in modulating reproductive function in assisted reproductive technologies, with evidence suggesting it can trigger an LH surge comparable to human chorionic gonadotropin (hCG) but with a shorter duration of action. Clinically, KP-10 is being evaluated as a diagnostic tool for assessing hypothalamic GnRH reserve and as a potential therapeutic agent for infertility disorders linked to impaired GnRH signaling. Its rapid onset and reversible action offer advantages over traditional hormonal therapies, though its short half-life necessitates careful dosing regimens. Ongoing trials aim to refine its application in reproductive medicine, particularly for conditions where precise control of gonadotropin release is required. For research purposes only — not medical advice.

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