What Is Kisspeptin-10?

Dhillo et al. (J. Clin. Endocrinol. Metab.): IV Kisspeptin-10 (1mcg/kg) potently stimulates LH pulse frequency and testosterone secretion in healthy men, establishing its role as a reproductive axis activator.

George et al.: Kisspeptin-10 infusion restores LH pulsatility and increases testosterone in men with type 2 diabetes-associated hypogonadism, demonstrating therapeutic potential.

Abbara et al. (J. Clin. Invest.): Kisspeptin-54 triggers oocyte maturation in women undergoing IVF with significantly lower risk of ovarian hyperstimulation syndrome (OHSS) vs. hCG trigger.

Jayasena et al.: Kisspeptin-10 administration increases LH secretion in women, with response magnitude dependent on menstrual cycle phase (strongest in preovulatory phase).

Ramaswamy et al.: Continuous Kisspeptin-10 infusion leads to desensitization of the HPG axis within 24-48 hours, indicating pulsatile dosing protocols are necessary for sustained efficacy.

In a 2026 study on mice, researchers demonstrated that phosphatidylinositol 4-kinase alpha is essential for the postnatal survival of GnRH neurons, though not for their embryonic development. The study found that knocking out this enzyme caused prepubertal neuron death, resulting in infertility in both sexes.

Polymorphisms in genes regulating insulin metabolism, steroidogenesis, and the hypothalamic-pituitary-ovarian axis were found to drive the clinical variability of Polycystic Ovary Syndrome. A 2026 review investigated these genetic markers to highlight their role in the disorder's pathophysiology.

High KISS1 expression and the PPARG, NOTCH, and PDGFB pathways were identified as key regulators of juxtaglomerular cell tumor development and renin secretion in a 2026 spatial transcriptomic analysis. The study demonstrated that REN expression positively correlates with KISS1 across multiple tumor types.

A 2026 study in female Wistar rats demonstrated that photoperiod-dependent melatonin signaling and estradiol synergistically modulate hypothalamic gene networks crucial for pubertal regulation. Researchers found that long-day photoperiods advanced puberty, while melatonin suppressed Kiss1 and GnRH expression in vitro.

A 2026 study in female dogs demonstrated that kisspeptin (KISS1) and Ki-67 expression significantly increased in the endometrium during estrus. These findings suggest that local kisspeptin signaling plays a coordinated role in endometrial proliferation and tissue remodeling during the reproductive cycle.

Kisspeptin-10 was found to attenuate pulmonary arterial hypertension and vascular remodeling in a mouse model by restoring mitochondrial homeostasis, according to a 2026 study. The peptide also demonstrated an ability to inhibit hypoxia-induced cell proliferation in vitro.

A 2026 study in ewes demonstrated that the initiation of ovarian activity is associated with concurrent increases in plasma kisspeptin-10 and neurokinin B concentrations, alongside reduced dynorphin A levels. These findings suggest these neuropeptides regulate the timing of reproductive onset.

A 2026 study demonstrated that Kisspeptin-10 promoted ovarian follicle development, enhanced hormone secretion, and increased follicular cell proliferation in mice. The peptide was found to suppress apoptosis and autophagy by activating the PI3K/AKT/ERK signaling pathway.

A 2026 meta-analysis demonstrated significantly higher serum kisspeptin levels in women with polycystic ovary syndrome compared to controls. Researchers found this elevation was most pronounced in overweight and obese patients, highlighting a potential interaction between metabolic status and reproductive neuroendocrine regulation.

A 2026 study in female mice demonstrated that sustained GABAergic input suppresses the burst firing and synchronization of arcuate kisspeptin neurons through both GABAA and GABAB receptors. These findings suggest GABAergic inputs can modulate the frequency of reproductive hormone pulse generator activity.

A 2026 study found that gestodene reduced post-hatching survival, decreased egg production, and inhibited the spawning ability of female Japanese medaka. The contraceptive adversely affected overall reproduction without altering the expression of genes associated with female mating receptivity.

A 2026 case report identified inherited missense mutations in the GNRHR and KISS1 genes in a patient with idiopathic hypogonadotropic hypogonadism and congenital hemi-arrhinia. The study demonstrated that a four-stage surgical reconstruction successfully improved aesthetic outcomes without altering nasal airflow.

A 2026 study in male rats demonstrated that cadmium exposure delayed pubertal onset and reduced serum testosterone levels. The research found that this disruption was linked to decreased hypothalamic expression of Kiss1, Kiss1r, and Gnrh1 genes within the kisspeptin-GnRH axis.

A 2026 study found that central infusion of the adipokine asprosin restored erectile function, copulatory behavior, and testicular morphology in rats treated with selective serotonin reuptake inhibitors. The research demonstrated that asprosin improved sperm concentration and motility while modulating central reproductive circuits.

A 2026 review found that LEPRb mutations disrupt hypothalamic circuitry upstream of GnRH neurons, impairing reproductive function and causing hypogonadotropic hypogonadism. The study investigated the central role of kisspeptin-mediated signaling in leptin-dependent reproductive regulation.