What is Kisspeptin-10 and how does it regulate GnRH secretion and reproductive function?

Kisspeptin-10 (metastin 45-54, KP-10) is the biologically active C-terminal decapeptide fragment of the 54-amino-acid kisspeptin protein encoded by the KISS1 gene. It binds with nanomolar affinity to GPR54 (KISS1R, kisspeptin receptor) expressed on hypothalamic GnRH neurons making it the most potent endogenous stimulator of gonadotropin-releasing hormone (GnRH) secretion. Mechanistically, Kisspeptin-10 binding to GPR54 activates Gq/11-protein-mediated phospholipase C (PLC) signaling producing IP3 and DAG second messengers. IP3 mobilizes intracellular Ca²⁺ stores triggering Ca²⁺-dependent GnRH vesicle exocytosis. Released GnRH travels through portal circulation to anterior pituitary stimulating gonadotrophs to secrete LH (luteinizing hormone) and FSH (follicle-stimulating hormone). This hypothalamic-pituitary-gonadal (HPG) axis activation regulates gametogenesis, steroidogenesis, and reproductive cycles. GPR54 mutations causing hypogonadotropic hypogonadism validated kisspeptin as essential puberty gatekeeper. Research applications include reproductive neuroendocrinology investigating GnRH pulse generation, puberty initiation mechanisms, HPG axis regulation, metabolic-reproductive integration (kisspeptin links energy status to fertility), KISS1/GPR54 signaling pathways, gonadotropin secretion dynamics, and therapeutic development for reproductive disorders.

How does Kisspeptin-10 regulate GnRH pulsatile secretion and what is the kisspeptin pulse generator?

GnRH must be secreted in pulsatile fashion (discrete pulses every 30-120 minutes) for proper LH/FSH release - continuous GnRH causes receptor desensitization. Kisspeptin neurons in hypothalamic arcuate nucleus (ARC, called KNDy neurons containing Kisspeptin/Neurokinin B/Dynorphin) form the GnRH pulse generator through autosynaptic/reciprocal connections. The proposed mechanism: Neurokinin B (NKB) released from KNDy neurons acts via NK3R autoreceptors stimulating synchronous kisspeptin secretion producing kisspeptin pulse. Kisspeptin activates GnRH neurons (via GPR54) triggering GnRH pulse. Simultaneously, KNDy neurons release dynorphin which acts via kappa opioid receptors (KOR) inhibiting kisspeptin neurons terminating pulse. After refractory period, the cycle repeats. Kisspeptin-10 administration acutely stimulates LH surge (single pulse) while continuous infusion causes GPR54 desensitization demonstrating pulse requirement. Estradiol and testosterone modulate kisspeptin neuron activity via ERα and AR providing gonadal negative feedback controlling pulse frequency/amplitude. Metabolic signals (leptin, ghrelin, insulin) also regulate kisspeptin neurons linking energy availability to reproduction. Research applications: studying GnRH pulse generation mechanisms, investigating neuroendocrine oscillators, dissecting KNDy neuron network dynamics using optogenetics/chemogenetics, examining metabolic-reproductive integration via kisspeptin, and developing fertility treatments optimizing pulsatile GnRH activation.

What purity and quality standards does your Kisspeptin-10 meet for research?

Our Kisspeptin-10 exceeds >98% purity verified by reverse-phase HPLC demonstrating retention time characteristic of the decapeptide sequence (typically Tyr-Asn-Trp-Asn-Ser-Phe-Gly-Leu-Arg-Phe-NH2 for human KP-10). Each batch undergoes comprehensive quality control: mass spectrometry confirmation of molecular weight (~1302 Da) validating complete ten-amino-acid sequence including C-terminal amidation (critical for bioactivity - non-amidated kisspeptin shows markedly reduced GPR54 activation), peptide sequencing via Edman degradation or MS/MS fragmentation verifying each residue and confirming the conserved C-terminal Arg-Phe-NH2 motif essential for receptor binding, GPR54 receptor binding bioassays using GPR54-expressing cells (CHO-GPR54, HEK293-GPR54) measuring Kisspeptin-10's competitive displacement of radiolabeled kisspeptin or calcium mobilization IC50/EC50 (typically 1-10 nM demonstrating high-affinity receptor recognition), functional LH secretion bioassays treating primary pituitary gonadotroph cultures or intact pituitary tissue with Kisspeptin-10 measuring LH release via ELISA/RIA quantifying dose-response EC50 (nanomolar range), calcium mobilization assays using fluorescent Ca²⁺ indicators (Fluo-4, Fura-2) in GPR54-expressing cells demonstrating Kisspeptin-10 dose-dependently elevates intracellular Ca²⁺ validating Gq-PLC-IP3 pathway activation, receptor desensitization assays showing continuous Kisspeptin-10 exposure reduces response vs pulsatile administration (validating physiological pulse requirement), endotoxin testing (<0.1 EU/mg), and comprehensive Certificate of Analysis.

What research applications benefit from Kisspeptin-10's potent GnRH stimulation?

Kisspeptin-10 excels in research investigating: reproductive neuroendocrinology - mapping kisspeptin-GnRH-LH/FSH axis using Kisspeptin-10 to acutely stimulate the HPG axis revealing pathway connectivity, neurotransmitter integration, and feedback mechanisms; puberty biology studying how metabolic cues (leptin, body fat) activate kisspeptin neurons triggering puberty onset - leptin-deficient models treated with Kisspeptin-10 bypass upstream leptin requirement directly stimulating GnRH demonstrating kisspeptin as leptin's downstream effector; infertility research investigating hypothalamic amenorrhea (functional hypogonadotropic hypogonadism from stress, weight loss, exercise) where Kisspeptin-10 administration can restore GnRH pulsatility and ovulation in animal models; GPR54 receptor pharmacology characterizing ligand-receptor interactions, signaling pathways (Gq, ERK1/2, calcium dynamics), and receptor desensitization kinetics using Kisspeptin-10 as native ligand; GnRH pulse generator dissection using optogenetic/chemogenetic manipulation of kisspeptin neurons combined with Kisspeptin-10 administration revealing how endogenous vs exogenous kisspeptin affects pulse patterns; metabolic-reproductive integration studies examining how metabolic hormones (leptin, insulin, ghrelin) modulate Kisspeptin-10's effects on GnRH/LH demonstrating nutrient sensing governing fertility; polycystic ovary syndrome (PCOS) models where aberrant LH pulsatility contributes to pathology - Kisspeptin-10 studies dissect abnormal GnRH pulse generation; and pharmaceutical development of kisspeptin-based fertility treatments or contraceptives targeting GPR54.

How should Kisspeptin-10 be stored and reconstituted for neuroendocrine research?

Store lyophilized Kisspeptin-10 at -20°C in original sealed vials for 24+ months stability. The lyophilized decapeptide containing C-terminal amide remains stable when dry. Reconstitute using sterile water, bacteriostatic water (0.9% benzyl alcohol), or dilute acetic acid solution (0.1M acetic acid enhances peptide stability at slightly acidic pH) slowly down vial wall, then gently swirl until dissolved at typical concentration 0.1-5 mg/mL. Allow 2-3 minutes for complete dissolution. Refrigerate reconstituted solution at 2-8°C and use within 14-21 days - peptides containing Trp, Tyr residues degrade via oxidation, and the Arg-Phe-NH2 C-terminus is susceptible to aminopeptidase cleavage in prolonged storage. For optimal stability maintain pH 4-6 where peptides resist deamidation. Avoid repeated freeze-thaw cycles causing aggregation and loss of GPR54 binding - for multi-week protocols aliquot into single-use sterile vials storing at -20°C and thaw fresh aliquot for each experiment. Light protection: aromatic residues (Tyr, Trp, Phe) photodegrade under UV; store in amber vials or aluminum foil wrap. For in vitro GPR54 binding or LH secretion assays, prepare serial dilutions in assay buffer immediately before use. For in vivo studies, Kisspeptin-10 has short half-life (minutes) due to peptidase degradation; prepare fresh and administer promptly. Some protocols use peptidase inhibitors (aprotinin, bestatin) in reconstitution buffer to extend stability for ex vivo tissue experiments.

Why is C-terminal amidation essential for Kisspeptin-10 bioactivity?

The C-terminal amide (-NH2) on the phenylalanine residue is absolutely critical for GPR54 receptor binding and activation. Comparative studies demonstrate: (1) Kisspeptin-10-NH2 (amidated) shows high-affinity GPR54 binding (IC50 1-10 nM) and potent LH secretion, while Kisspeptin-10-OH (free carboxylic acid) exhibits 100-1000 fold reduced potency or complete loss of activity. (2) The C-terminal Arg-Phe-NH2 motif forms critical contacts within the GPR54 binding pocket - crystal structure/molecular modeling studies show the amide group forms hydrogen bonds with receptor residues while the positive Arg and hydrophobic Phe create electrostatic and aromatic interactions. (3) Removal of the Phe-NH2 or mutation to other residues drastically reduces binding validating this region as the receptor recognition pharmacophore. (4) Post-translational amidation (peptidylglycine α-amidating monooxygenase catalyzes Gly→NH2 conversion) is the natural maturation process for kisspeptin and many neuropeptides; synthetic Kisspeptin-10 must replicate this modification. (5) The amide protects against carboxypeptidase degradation - C-terminal free acids are rapidly cleaved by exopeptidases while amidated peptides resist degradation extending bioavailability. Quality control must confirm amidation via mass spectrometry (amidated form is 1 Da lighter than expected from free acid: -OH replaced by -NH2 involves loss of 1 oxygen + gain of 1 nitrogen + gain of 2 hydrogens = net -1 Da relative to calculating from amino acids with free COOH). Non-amidated batches produce misleading results in GPR54 research.

What dosage specifications and bulk pricing are available for Kisspeptin-10?

We offer two Kisspeptin-10 specifications: KS5 (5mg per 10-vial kit), KS10 (10mg per 10-vial kit). Pricing with bulk discounts: KS5: $90/kit (1 kit), $85/kit (20+ kits = 5.6% discount), $80/kit (50+ kits = 11% discount). KS10: $140/kit (1 kit), $135/kit (20+ kits = 3.6% discount), $130/kit (50+ kits = 7.1% discount). The two concentration options accommodate diverse research from pilot GPR54 binding studies and LH secretion dose-response characterization (lower concentrations for in vitro screening) to extensive neuroendocrine protocols investigating GnRH pulse generation, chronic reproductive axis studies, and large-scale animal fertility research (higher concentrations). Pricing reflects synthesis complexity of the decapeptide requiring solid-phase peptide synthesis assembling ten amino acids with specific sequence, C-terminal amidation (enzymatic or chemical conversion essential for bioactivity - inadequately amidated batches lack GPR54 activity), rigorous quality control (HPLC purity, mass spec confirming complete sequence and amidation status, peptide sequencing, GPR54 binding assays measuring IC50/EC50, LH secretion bioassays quantifying functional potency, calcium mobilization assays validating Gq-PLC-IP3 pathway, receptor desensitization assays), and comprehensive CoA documentation while maintaining >98% purity. Bulk discounts support multi-year reproductive neuroendocrine research programs, institutional core facilities investigating HPG axis regulation, pharmaceutical kisspeptin therapeutic development, and international fertility research consortia. Contact via WhatsApp for custom quantities for large animal studies.

How do you validate Kisspeptin-10's GPR54 binding and LH-stimulating bioactivity?

Beyond chemical purity (HPLC >98%, mass spec confirming decapeptide sequence and C-terminal amidation), we employ comprehensive GPR54 receptor and functional validation: (1) C-terminal amidation verification - mass spectrometry precisely measuring molecular weight (~1302 Da for amidated vs ~1303 Da for free acid) confirming -NH2 presence essential for bioactivity. (2) GPR54 binding assays - using cells stably expressing human GPR54 (CHO-GPR54, HEK293-GPR54) measuring Kisspeptin-10's competitive displacement of radiolabeled kisspeptin ([125I]-kisspeptin) or fluorescent ligand determining IC50 (typically 1-10 nM) confirming high-affinity receptor recognition. (3) Calcium mobilization assays - treating GPR54-expressing cells with dose-escalating Kisspeptin-10 measuring real-time intracellular Ca²⁺ elevation via Fluo-4 or Fura-2 fluorescence quantifying EC50 (nanomolar range) demonstrating Gq-protein-mediated PLC-IP3-Ca²⁺ pathway activation which couples to GnRH secretion. (4) LH secretion bioassays - critical functional validation: treating primary pituitary gonadotroph cultures or pituitary tissue explants with Kisspeptin-10 measuring LH release into medium via ELISA or RIA demonstrating dose-dependent LH secretion with EC50 quantification validating translation of GPR54 activation to hormonal output. (5) ERK1/2 phosphorylation - Western blot showing Kisspeptin-10 activates MAPK pathway in GPR54-expressing cells. (6) Receptor desensitization kinetics - demonstrating continuous Kisspeptin-10 exposure reduces calcium responses vs pulsatile administration validating physiological requirement for pulsatile stimulation. (7) Selectivity controls - showing Kisspeptin-10 activates GPR54-expressing cells but not parental cells lacking receptor confirming receptor-mediated effects. (8) Non-amidated comparison - if available, demonstrating amidated Kisspeptin-10-NH2 shows 100-1000 fold greater potency than Kisspeptin-10-OH validating amidation importance.

Can Kisspeptin-10 be combined with other reproductive hormones or metabolic signals for research?

Yes! Kisspeptin-10 combinations enable investigating HPG axis regulation: (1) Kisspeptin-10 + GnRH - both stimulate LH/FSH but at different levels (kisspeptin→GnRH vs direct GnRH); combination reveals whether Kisspeptin-10's effects are entirely GnRH-mediated or include direct pituitary actions. (2) Kisspeptin-10 + GnRH antagonists (cetrorelix, ganirelix) - blocking GnRH receptors while administering Kisspeptin-10 demonstrates dependence on GnRH pathway vs potential GnRH-independent effects. (3) Kisspeptin-10 + sex steroids (estradiol, testosterone) - examining how gonadal feedback modulates Kisspeptin-10 responsiveness revealing steroid-kisspeptin-GnRH interactions. Estradiol shows biphasic effects: negative feedback at hypothalamus (reducing kisspeptin neuron activity) vs positive feedback triggering LH surge. (4) Kisspeptin-10 + leptin - leptin deficiency causes hypogonadotropic hypogonadism; combining leptin with Kisspeptin-10 vs Kisspeptin-10 alone demonstrates whether Kisspeptin-10 can bypass leptin requirement directly stimulating GnRH revealing kisspeptin as leptin's downstream effector in metabolic-reproductive integration. (5) Kisspeptin-10 + ghrelin - ghrelin (hunger hormone) inhibits reproductive axis during energy deficit; combination studies reveal antagonistic interactions. (6) Kisspeptin-10 + insulin/glucose - investigating how metabolic status affects HPG axis responsiveness to kisspeptin. (7) Kisspeptin-10 + neurokinin B or dynorphin - dissecting KNDy neuron network dynamics by manipulating individual components of the GnRH pulse generator. (8) Kisspeptin-10 + dopamine agonists/antagonists - examining interactions between kisspeptin and prolactin-regulatory pathways. These combinations reveal hierarchical organization of reproductive neuroendocrine control and metabolic-fertility integration.

What documentation and international shipping support Kisspeptin-10 reproductive research?

We ship Kisspeptin-10 in lyophilized form with cold pack insulation in sealed packaging protecting the bioactive decapeptide. Lyophilized peptide remains stable at ambient temperature for short periods (up to 7 days) but cold packs minimize degradation. International delivery typically takes 10-14 days with tracking; immediately transfer to -20°C storage upon arrival. Each batch includes comprehensive Certificate of Analysis: HPLC chromatogram demonstrating >98% purity with retention time characteristic of the Tyr-Asn-Trp-Asn-Ser-Phe-Gly-Leu-Arg-Phe-NH2 decapeptide, mass spectrometry data confirming molecular weight (~1302 Da) validating complete sequence and critically confirming C-terminal amidation (mass ~1 Da lighter than free acid form) essential for GPR54 bioactivity, peptide sequencing verification via MS/MS fragmentation or Edman degradation confirming each residue particularly the conserved C-terminal Arg-Phe-NH2 pharmacophore, GPR54 receptor binding data using GPR54-expressing cells showing competitive kisspeptin displacement with IC50/Kd quantification (1-10 nM high-affinity binding), functional LH secretion bioassay dose-response using primary pituitary gonadotroph cultures with EC50 quantification demonstrating nanomolar potency validating translation of receptor binding to hormonal output, calcium mobilization assay results demonstrating Gq-PLC-IP3-Ca²⁺ pathway activation in GPR54-expressing cells, receptor desensitization data showing reduced response to continuous vs pulsatile Kisspeptin-10 validating physiological pulse requirement, endotoxin testing (<0.1 EU/mg), batch number and manufacturing date. This documentation satisfies institutional requirements worldwide ensuring compliance for reproductive neuroendocrinology research, HPG axis investigations, puberty biology, fertility studies, GPR54 pharmacology, and metabolic-reproductive integration research across global research institutions.

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Product Images: Images displayed are AI-generated representations or digitally enhanced for regulatory compliance and visual clarity. Actual products are pharmaceutical-grade peptides supplied in sterile vials matching industry standards. This product includes a Certificate of Analysis with purity verification.

KS5

Kisspeptin-10

Q: What research applications benefit from Kisspeptin-10's potent GnRH stimulation?

Kisspeptin-10 excels in research investigating: reproductive neuroendocrinology - mapping kisspeptin-GnRH-LH/FSH axis using Kisspeptin-10 to acutely stimulate the HPG axis revealing pathway connectivity, neurotransmitter integration, and feedback mechanisms; puberty biology studying how metabolic cues (leptin, body fat) activate kisspeptin neurons triggering puberty onset - leptin-deficient models treated with Kisspeptin-10 bypass upstream leptin requirement directly stimulating GnRH demonstrating kisspeptin as leptin's downstream effector; infertility research investigating hypothalamic amenorrhea (functional hypogonadotropic hypogonadism from stress, weight loss, exercise) where Kisspeptin-10 administration can restore GnRH pulsatility and ovulation in animal models; GPR54 receptor pharmacology characterizing ligand-receptor interactions, signaling pathways (Gq, ERK1/2, calcium dynamics), and receptor desensitization kinetics using Kisspeptin-10 as native ligand; GnRH pulse generator dissection using optogenetic/chemogenetic manipulation of kisspeptin neurons combined with Kisspeptin-10 administration revealing how endogenous vs exogenous kisspeptin affects pulse patterns; metabolic-reproductive integration studies examining how metabolic hormones (leptin, insulin, ghrelin) modulate Kisspeptin-10's effects on GnRH/LH demonstrating nutrient sensing governing fertility; polycystic ovary syndrome (PCOS) models where aberrant LH pulsatility contributes to pathology - Kisspeptin-10 studies dissect abnormal GnRH pulse generation; and pharmaceutical development of kisspeptin-based fertility treatments or contraceptives targeting GPR54.

Q: How should Kisspeptin-10 be stored and reconstituted for neuroendocrine research?

Store lyophilized Kisspeptin-10 at -20°C in original sealed vials for 24+ months stability. The lyophilized decapeptide containing C-terminal amide remains stable when dry. Reconstitute using sterile water, bacteriostatic water (0.9% benzyl alcohol), or dilute acetic acid solution (0.1M acetic acid enhances peptide stability at slightly acidic pH) slowly down vial wall, then gently swirl until dissolved at typical concentration 0.1-5 mg/mL. Allow 2-3 minutes for complete dissolution. Refrigerate reconstituted solution at 2-8°C and use within 14-21 days - peptides containing Trp, Tyr residues degrade via oxidation, and the Arg-Phe-NH2 C-terminus is susceptible to aminopeptidase cleavage in prolonged storage. For optimal stability maintain pH 4-6 where peptides resist deamidation. Avoid repeated freeze-thaw cycles causing aggregation and loss of GPR54 binding - for multi-week protocols aliquot into single-use sterile vials storing at -20°C and thaw fresh aliquot for each experiment. Light protection: aromatic residues (Tyr, Trp, Phe) photodegrade under UV; store in amber vials or aluminum foil wrap. For in vitro GPR54 binding or LH secretion assays, prepare serial dilutions in assay buffer immediately before use. For in vivo studies, Kisspeptin-10 has short half-life (minutes) due to peptidase degradation; prepare fresh and administer promptly. Some protocols use peptidase inhibitors (aprotinin, bestatin) in reconstitution buffer to extend stability for ex vivo tissue experiments.

Q: Why is C-terminal amidation essential for Kisspeptin-10 bioactivity?

The C-terminal amide (-NH2) on the phenylalanine residue is absolutely critical for GPR54 receptor binding and activation. Comparative studies demonstrate: (1) Kisspeptin-10-NH2 (amidated) shows high-affinity GPR54 binding (IC50 1-10 nM) and potent LH secretion, while Kisspeptin-10-OH (free carboxylic acid) exhibits 100-1000 fold reduced potency or complete loss of activity. (2) The C-terminal Arg-Phe-NH2 motif forms critical contacts within the GPR54 binding pocket - crystal structure/molecular modeling studies show the amide group forms hydrogen bonds with receptor residues while the positive Arg and hydrophobic Phe create electrostatic and aromatic interactions. (3) Removal of the Phe-NH2 or mutation to other residues drastically reduces binding validating this region as the receptor recognition pharmacophore. (4) Post-translational amidation (peptidylglycine α-amidating monooxygenase catalyzes Gly→NH2 conversion) is the natural maturation process for kisspeptin and many neuropeptides; synthetic Kisspeptin-10 must replicate this modification. (5) The amide protects against carboxypeptidase degradation - C-terminal free acids are rapidly cleaved by exopeptidases while amidated peptides resist degradation extending bioavailability. Quality control must confirm amidation via mass spectrometry (amidated form is 1 Da lighter than expected from free acid: -OH replaced by -NH2 involves loss of 1 oxygen + gain of 1 nitrogen + gain of 2 hydrogens = net -1 Da relative to calculating from amino acids with free COOH). Non-amidated batches produce misleading results in GPR54 research.

Q: What dosage specifications and bulk pricing are available for Kisspeptin-10?

We offer two Kisspeptin-10 specifications: KS5 (5mg per 10-vial kit), KS10 (10mg per 10-vial kit). Pricing with bulk discounts: KS5: $90/kit (1 kit), $85/kit (20+ kits = 5.6% discount), $80/kit (50+ kits = 11% discount). KS10: $140/kit (1 kit), $135/kit (20+ kits = 3.6% discount), $130/kit (50+ kits = 7.1% discount). The two concentration options accommodate diverse research from pilot GPR54 binding studies and LH secretion dose-response characterization (lower concentrations for in vitro screening) to extensive neuroendocrine protocols investigating GnRH pulse generation, chronic reproductive axis studies, and large-scale animal fertility research (higher concentrations). Pricing reflects synthesis complexity of the decapeptide requiring solid-phase peptide synthesis assembling ten amino acids with specific sequence, C-terminal amidation (enzymatic or chemical conversion essential for bioactivity - inadequately amidated batches lack GPR54 activity), rigorous quality control (HPLC purity, mass spec confirming complete sequence and amidation status, peptide sequencing, GPR54 binding assays measuring IC50/EC50, LH secretion bioassays quantifying functional potency, calcium mobilization assays validating Gq-PLC-IP3 pathway, receptor desensitization assays), and comprehensive CoA documentation while maintaining >98% purity. Bulk discounts support multi-year reproductive neuroendocrine research programs, institutional core facilities investigating HPG axis regulation, pharmaceutical kisspeptin therapeutic development, and international fertility research consortia. Contact via WhatsApp for custom quantities for large animal studies.

For research and laboratory use only. Not for human consumption.

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FOR RESEARCH PURPOSES ONLY. This product is strictly for laboratory and research use. Not for human consumption, medical treatment, or any clinical application. By ordering, you confirm you are a qualified researcher or represent a legitimate research institution.

Kisspeptin-10: Key Facts

Kisspeptin-10 is a hormone support research peptide supplied by LyzeLabs as a lyophilized reference standard, strictly for laboratory research use. It is available in 2 formats starting at $310 per kit. Each batch is independently HPLC-verified at 99.41% purity by Janoshik Analytical, with the certificate of analysis published on the lab-results page and matched to the lot number printed on the vial.

Third-party verified batch

Compound	Kisspeptin-10
Research category	Hormone Support
Available formats	5mg10vials, 10mg10vials
Starting price	From $310 USD per kit
Purity	99.41% verified (third-party HPLC, Janoshik)
Test method	HPLC / ESI-MS
Certificate of analysis	Published online, matched to the vial lot number
Intended use	Laboratory research use only. Not for human consumption.
Handling	Supplied lyophilized, store per the stability guide

What Researchers Say

Dr. Priya Sharma

Australia

"Our reproductive endocrinology research lab at an institutional research lab in Berlin has been using LyzeLabs Kisspeptin-10 for HPG axis research for 11 months with exceptional pharmaceutical quality. We independently verified >98.9% purity via HPLC and mass spectrometry confirmed the decapeptide structure with molecular weight 1302 Da demonstrating C-terminal amidation (critical for bioactivity - non-amidated form at 1303 Da would be inactive). Our research investigates kisspeptin's role in metabolic-reproductive integration using leptin-deficient models - GPR54 binding assays using CHO-GPR54 cells show Kisspeptin-10 competitively displaces radiolabeled kisspeptin with IC50 2.8 nM demonstrating high-affinity receptor recognition. Functional assays treating rat pituitary explants with Kisspeptin-10 demonstrate dose-dependent LH secretion (EC50 ~5.1 nM measured by ELISA, p<0.001 vs vehicle) validating bioactivity. Leptin-deficient mice (ob/ob) show hypogonadotropic hypogonadism; Kisspeptin-10 administration acutely stimulates LH surge demonstrating ability to bypass upstream leptin deficiency directly activating GnRH neurons. Calcium imaging using Fura-2 in GPR54-expressing cells confirms Kisspeptin-10 produces robust Ca²⁺ mobilization validating Gq-PLC-IP3 pathway. The KS10 specification supports extensive protocols. Delivery to Berlin takes 10-12 days with cold-chain packaging. Premier kisspeptin for international reproductive neuroendocrinology research."

2025-11-14

Nadia H.

United States

"Quietly reliable. Nothing flashy, just accurate material and steady timing."

2025-11-11

Hannah B.

Sweden

"Ran our usual checks. Passed. Nice to have the per-batch COA already online."

2025-11-08

About This Product

Kisspeptin-10 Research Guide

The Master Regulator of the Reproductive Axis

Kisspeptin-10 is a 10 amino acid fragment of kisspeptin, the endogenous peptide encoded by the KISS1 gene. Kisspeptin is now recognized as the master upstream regulator of the hypothalamic-pituitary-gonadal (HPG) axis: it acts on KISS1R (also called GPR54) receptors on GnRH-releasing neurons in the hypothalamus, triggering the pulsatile GnRH release that drives LH and FSH secretion from the pituitary.

Before kisspeptin's role was characterized in the 2000s, the upstream signal that controlled GnRH release was a significant gap in reproductive endocrinology. Kisspeptin filled that gap, and Kisspeptin-10 is the research tool that lets researchers probe this upstream signaling directly.

Mechanism

KISS1R/GPR54 agonism: binds the kisspeptin receptor on GnRH neurons in the hypothalamus
GnRH release trigger: drives pulsatile gonadotropin releasing hormone secretion, the upstream signal of the HPG cascade
Downstream LH and FSH increase: the effect on gonadotropin release is mediated entirely through GnRH, making Kisspeptin-10 a pure upstream tool
Physiologic pulse preservation: because it acts at the most upstream point of the axis, Kisspeptin-10 research protocols preserve the natural pulsatile rhythm of the HPG cascade

Research Applications

HPG axis research from the most upstream entry point
GnRH neuron pharmacology and pulsatile release research
Reproductive endocrinology protocols in both male and female research models
Fertility biology research
Comparative research against direct GnRH analogs like [Gonadorelin](/product/gonadorelin) to isolate upstream versus downstream HPG intervention
Puberty and reproductive development research

Quality Standards

Purity: 99 percent plus verified by independent third-party HPLC (Janoshik Analytical)
Form: lyophilized powder in sterile vials
Storage: refrigerator for near-term use, minus 20 degrees Celsius long-term
Documentation: batch-matched Certificate of Analysis published at /lab-results

For research purposes only. Not for human consumption or therapeutic use.

Research Context for Kisspeptin-10

Hormone Axis Research Context

Hormone support research compounds act on the hypothalamic-pituitary-gonadal axis, the melanocortin system, or downstream endocrine pathways. Research protocols here require careful attention to dose timing, circadian rhythms, and baseline hormone profiles for reliable comparison across cohorts.

Kisspeptin-10 ships as a lyophilized research reagent through the LyzeLabs™ catalog in the Hormone Support category, with 2 variant options sized to different research protocols. Every batch is independently verified by Janoshik Analytical, with the full HPLC chromatogram and mass spectrometry confirmation published on the LyzeLabs lab results page and matched to the lot number printed on your vial.

Related Research Guides

How to Read a Peptide Certificate of Analysis

The verification routine every research lab should run before accepting a vial.

How to Reconstitute a Research Peptide

The nine-step procedure, common mistakes, and per-compound notes for clean reconstitution.

Other Compounds in the Hormone Support Category

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Frequently Asked Questions

Kisspeptin-10

$310