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Kisspeptin-10: Research Overview

What is Kisspeptin-10? Kisspeptin-10 is a ten-amino-acid C-terminal fragment of kisspeptin, the peptide product of the KiSS-1 gene. It acts as an agonist at the GPR54 receptor, also designated KISS1R, and is studied in reproductive-endocrinology research on GnRH pulse regulation. It is supplied strictly as a research chemical for laboratory use.
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Technical profile

CompoundKisspeptin-10 (KP-10)
ClassDecapeptide (10 amino acids); C-terminal fragment of the KiSS-1 gene product
SequenceTyr-Asn-Trp-Asn-Ser-Phe-Gly-Leu-Arg-Phe-NH₂
Receptor targetGPR54, also designated KISS1R — a G-protein-coupled receptor
Molecular weight~1302.4 g/mol (approximate)
Form suppliedLyophilized powder, sealed vial
StorageLyophilized: 2–8 °C, protected from light.
VerificationHPLC purity ≥99%, sterility, endotoxins, heavy metals — documented on the batch COA

What does the research literature cover?

Kisspeptin signalling is an established topic in reproductive endocrinology, where the KiSS-1/GPR54 system is studied as an upstream regulator of gonadotropin-releasing hormone. Published research covers:

Important context: this section describes the scope of published research on the kisspeptin system. It is not a claim about what the research material supplied here does in humans, and it should not be read as suggesting any human application. Research-grade Kisspeptin-10 has no approved human use in any jurisdiction.

Why purity matters for Kisspeptin-10 research

Kisspeptin-10 carries a C-terminal amide and residues — notably tryptophan and arginine — that make it sensitive to oxidation and to incomplete deprotection during synthesis. Deamidated or truncated species can shift apparent receptor potency by a wide margin in GPR54 assays. Every VP Peptides Kisspeptin-10 batch ships with a Certificate of Analysis documenting ≥99% HPLC purity plus sterility, endotoxin and heavy-metal testing from independent third-party testing.

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Frequently asked questions

Is Kisspeptin-10 approved for human use?

No. Kisspeptin-10 is not approved by the FDA or any other regulatory agency for human use. Its appearance in investigator-led, ethics-approved academic research does not constitute regulatory approval, and it does not apply to research-grade material. The product described here is supplied strictly as a research chemical for in-vitro and laboratory investigation — it is not a drug, supplement, or food ingredient.

What does a Kisspeptin-10 Certificate of Analysis include?

Each batch COA documents HPLC purity (≥99% specification), sterility, endotoxin and heavy-metal screening results, along with batch number and test date.

How should Kisspeptin-10 be stored in the lab?

Lyophilized vials should be kept at 2–8 °C and protected from light. Because the sequence contains oxidation-prone residues, minimising repeated freeze–thaw cycles is common practice.

How does Kisspeptin-10 relate to other kisspeptin isoforms?

The KiSS-1 gene product is processed into peptides of differing lengths that share a common C-terminal region. Kisspeptin-10 is the shortest of these fragments and retains the C-terminal sequence responsible for GPR54/KISS1R engagement, which is why it is frequently chosen as a tool compound in receptor studies.

KISS1R signaling upstream of GnRH

In reproductive-endocrinology research, kisspeptin is characterized as an upstream regulator of the neuroendocrine axis rather than an effector at the gonad. The peptide is the endogenous ligand for KISS1R (also called GPR54), a G-protein-coupled receptor expressed on gonadotropin-releasing hormone (GnRH) neurons of the hypothalamus. Binding is described as engaging Gαq/11 and β-arrestin-dependent intracellular pathways, and the resulting effect on GnRH neurons is reported to be both pre- and postsynaptic: presynaptically the peptide is described as increasing excitatory drive to these neurons, while postsynaptically it is reported to suppress certain potassium currents and activate nonselective cation currents, producing sustained depolarization and increased firing.

Because it sits at this control point, kisspeptin has become a widely used tool for interrogating how the GnRH system is organized. Studies have examined receptor desensitization, internalization and recycling as mechanisms that shape the duration of signaling, and human genetic work identified loss-of-function mutations in the kisspeptin pathway in cases of isolated GnRH deficiency — findings that established the pathway's role in the neuroendocrine control of the reproductive axis and its sensitivity to sex-steroid feedback and metabolic cues.

Kisspeptin is an investigational compound: it has been the subject of human reproductive-physiology research, but it is not an approved drug in any jurisdiction, and material supplied here is a laboratory research reagent only. The summaries above describe published neuroendocrine mechanism and receptor pharmacology; they are not statements about clinical use, and nothing here is a claim regarding fertility or any effect in humans.

Selected research references

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Research use only. All products described on this page are furnished for laboratory research purposes only and are not for human or veterinary use, not for use in food or cosmetics, and not for any diagnostic or therapeutic application. Nothing on this page is medical advice or a claim of safety or efficacy in humans. Research summaries reference publicly available preclinical literature; specific citations are listed in the references above.