Kisspeptin-10

What Is Kisspeptin-10?

Kisspeptin-10 (KP-10), also known as Metastin (45-54), is a synthetic peptide composed of 10 amino acids derived from the C-terminal active fragment of the larger kisspeptin-54 protein, encoded by the human KISS1 gene. As a research compound, it has attracted significant scientific interest for its potent neuroendocrine and signaling properties, extensively documented in preclinical and clinical research models.

Its underlying biological role relates to the activation of the GPR54 receptor (also known as KISS1R), a G-protein-coupled receptor central to the hypothalamic-pituitary-gonadal (HPG) axis. Studies indicate that Kisspeptin-10 stimulates gonadotropin-releasing hormone (GnRH) secretion, modulates downstream luteinizing hormone (LH) and follicle-stimulating hormone (FSH) release, and influences metastasis suppression pathways — processes central to reproductive maturation, fertility regulation, and cellular signaling research (Kotani et al., 2001; Seminara et al., 2003).

Mechanism of Action

Kisspeptin-10 is studied for its high-affinity binding to the GPR54/KISS1R receptor, triggering Gq/11α signaling, calcium mobilization, and downstream activation of the ERK1/2 and p38 MAPK phosphorylation cascades (Ohtaki et al., 2001; Castaño et al., 2009). This signaling pathway drives GnRH neuron depolarization and modulates kisspeptin-dependent reproductive and neuroendocrine processes.

Key Areas of Research

Reproductive Axis & Fertility

Preclinical and clinical models show robust stimulation of LH pulse frequency and amplitude following Kisspeptin-10 administration, with effects on ovulation, spermatogenesis, and gonadal steroid output (George et al., 2011).

Puberty Onset

Research demonstrates that GPR54 activation by kisspeptin advances pubertal development in rodents and primates, with loss-of-function mutations producing hypogonadotropic hypogonadism (Navarro et al., 2004; Shahab et al., 2005).

Metastasis Suppression & Oncology

Originally identified as a metastasis suppressor, KP-10 has demonstrated inhibition of tumor cell migration and invasion across multiple cancer cell line models (Lee et al., 1996; Ohtaki et al., 2001).

Neuroendocrine & Behavioral Signaling

Studies highlight kisspeptin involvement in emotional processing, sexual behavior, and limbic-system modulation, indicating broader CNS signaling roles beyond classical reproductive function (Comninos et al., 2017).

Research Use Only

Kisspeptin-10 supplied by Peptidos.eu is intended exclusively for laboratory and scientific research. It is not approved for human or animal consumption and must not be used as a medicine or diagnostic tool.

Disclaimer

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