Kisspeptin-10

Kisspeptin-10, also known as KP-10 or the metastin fragment, is a short 10-amino-acid peptide derived from the larger kisspeptin protein encoded by the KISS1 gene. In research it is characterized as a ligand at the KISS1R receptor, also called GPR54.

It serves as a tool compound for investigating kisspeptin-receptor pathways in the laboratory. This page describes receptor-pathway research only.

It is reputed in peptide and men's-health circles for its role in the reproductive hormone axis, popularly associated with supporting testosterone, LH, and fertility signaling.

Kisspeptin-10 is anecdotally discussed in biohacking and fertility-research communities for its purported role upstream in the hypothalamic-pituitary-gonadal axis, where it is thought to help stimulate GnRH release. It is a popular topic in conversations about natural hormone support.

Researchers are investigating kisspeptin-10 for its potential to influence luteinizing hormone (LH) and testosterone signaling, as well as its interest as a tool in fertility and reproductive-endocrinology research. It is popularly associated with libido and reproductive-health inquiry, framed in strictly clinical terms.

These are areas of active or preclinical investigation and community interest, not outcomes established in humans.

Kisspeptin fragments are studied in preclinical and animal research for KISS1R (GPR54) signaling and its role in the GnRH-driven neuroendocrine axis. Studies examine receptor activation, downstream signaling, and neuroendocrine pathway activity in controlled model systems.

These experiments describe mechanisms measured in animal and cell-based research. Laboratory observations do not predict human outcomes.

Provided as a lyophilized powder kept sealed at -20°C and protected from light. Kisspeptin-10 is a relatively hydrophobic peptide (its sequence includes several aromatic and nonpolar residues), so it tends to clump or leave undissolved particles in plain bacteriostatic water. In research handling it is therefore dissolved first in a small volume of slightly acidic (dilute acetic acid) water, then topped up with bacteriostatic water to the working volume.

Once fully dissolved and clear, the solution is stored at 4°C for near-term experiments or aliquoted at -80°C for extended storage. An HPLC certificate of analysis is included with each lot.