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CAS no.: 374675-21-5
Molecular Weight: 1300.47 (Kisspeptin-10)
Kisspeptin is a naturally occurring peptide that has been studied for its central role in regulating the body’s reproductive hormone system. Research has shown that it helps activate key signaling pathways in the brain that control the release of reproductive hormones (including GnRH, LH, and FSH), which are essential for fertility and reproductive function.
Scientific studies in both animals and humans have explored how kisspeptin interacts with brain circuits, hormone levels, and metabolic signals to influence reproductive health. Researchers have also investigated its potential role in understanding puberty, fertility disorders, and how the brain and body communicate to regulate reproductive processes.
This product is provided strictly for laboratory research. It is not intended for human or animal use.
Sources: https://pubmed.ncbi.nlm.nih.gov/18239046/,
https://pubmed.ncbi.nlm.nih.gov/19297519/
First identified during studies on reproductive hormones, Kisspeptin gained its name from the town of Hershey, Pennsylvania, famous for the chocolate “Kiss.”
This peptide originates from the KISS1 gene, initially linked to a metastasis suppressor gene and later recognized as a regulator of the hypothalamic–pituitary–gonadal axis. Research shows that kisspeptin neurons stimulate gonadotropin-releasing hormone (GnRH) activity, influencing hormone signaling across the reproductive system.
In laboratory environments, Kisspeptin Peptide (5mg) supports controlled exploration of gonadotropin secretion, GnRH pulse generation, and the broader kisspeptin signaling network. It serves as a precise tool for studying neuroendocrine communication and peptide-based regulatory mechanisms.
What is kisspeptin? It’s a peptide first identified in the late 1990s during research on the KISS1 gene, which was linked to metastasis suppression. Its name comes from Hershey, Pennsylvania, the home of the chocolate “Kiss.” [1]
Classified as a neuropeptide, Kisspeptin plays a vital role in understanding hormonal regulation. It acts on the gonadotropin-releasing hormone (GnRH) neurons, which control the hypothalamic–pituitary–gonadal (HPG) axis. By triggering GnRH secretion, it helps regulate luteinizing hormone (LH) and gonadotropin release.
In peptide studies, Kisspeptin Peptide (5mg) provides researchers with reliable material for exploring reproductive function, gene expression, and hormone signaling in controlled laboratory settings.
The discovery of Kisspeptin peptides began with research on the KISS1 gene, first recognized for suppressing tumor metastasis. Scientists later found that this gene’s peptide product also activated gonadotropin-releasing hormone (GnRH) neurons, linking it to reproductive hormone control.
This connection was first detailed by researchers (Clifton DK Steiner RA), who identified how Kisspeptin signaling stimulates GnRH activity within the hypothalamic–pituitary–gonadal axis. This shift from oncology to neuroendocrinology marked a major advancement in peptide science.
Researchers identified GPR54, also known as KISS1R, as the primary kisspeptin receptor responsible for kisspeptin signaling. Since then, studies have produced kisspeptin analogs, kisspeptin agonist compounds, and related derivatives for precise lab investigations.
These findings continue to support research into GnRH secretion, hormone regulation, and the molecular mechanisms driving reproductive processes.
Kisspeptin is a short peptide ligand encoded by the KISS1 gene and synthesized as a biologically active fragment that binds to G protein-coupled receptor 54 (GPR54). Kisspeptin is one of the natural ligands involved in reproductive signaling. Its molecular structure includes a specific peptide sequence of amino acids responsible for receptor selectivity and signaling precision.
Kisspeptin peptides are derived from the KISS1 gene—the exact gene responsible for the peptide ligand—which encodes a biologically active sequence that binds to the GPR54 (KISS1R) receptor. The most studied variant, Kisspeptin-10, consists of a short amino acid sequence that serves as a biologically active fragment of the KISS1 gene product.
This compact sequence supports receptor binding and efficient signaling activity in controlled research settings. Researchers verify purity and identity using analytical methods such as high-performance liquid chromatography (HPLC) and mass spectrometry, ensuring accuracy and reproducibility in laboratory investigations.
Each verified batch ensures reproducibility in studies focused on gonadotropin secretion, peptide ligand interactions, and neuroendocrine regulation in controlled experimental systems.
Kisspeptin has distinct molecular properties that enable it to bind precisely to the GPR54 (KISS1R) receptor, a G protein–coupled receptor central to hormone signaling. This interaction activates intracellular pathways within gonadotropin-releasing hormone neurons, regulating GnRH secretion from the hypothalamus.
Acting as a neuropeptide, Kisspeptin integrates hormonal and neuronal signals that coordinate reproductive activity. It serves as a key regulator in the hypothalamic–pituitary–gonadal (HPG) axis, influencing luteinizing hormone (LH) and gonadotropin release. [2]
Researchers value its molecular stability and receptor specificity for exploring reproductive function and complex neuroendocrine mechanisms in well-controlled laboratory environments.
Kisspeptin Peptide (5mg) is provided in a lyophilized or freeze-dried powder form to maintain molecular stability during storage and transport. The process removes moisture under vacuum, preserving peptide integrity and preventing degradation.
Each batch undergoes HPLC and mass spectrometry testing to verify purity, sequence, and molecular weight. Research-grade quality ensures accurate dosing and reliable experimental outcomes. When reconstituted with sterile solvents, Kisspeptin retains activity under appropriate laboratory conditions.
Packaged in sterile, sealed vials, it meets strict laboratory standards and supports reproducibility in hormone signaling, gene expression, and neuroendocrine system research studies.
In research, Kisspeptin acts as a primary regulator of reproductive hormone signaling through the hypothalamic–pituitary–gonadal (HPG) axis. Studies on the kisspeptin system help explain how this peptide coordinates neuroendocrine communication and reproductive feedback. It stimulates gonadotropin-releasing hormone (GnRH) neurons, initiating hormonal cascades that control luteinizing hormone (LH) and follicle-stimulating hormone (FSH) secretion.
Scientists study this peptide to understand the timing of puberty, fertility regulation, and neuroendocrine communication. Because of its precise receptor interaction, Kisspeptin provides a dependable tool for exploring hormone balance, gene expression, and reproductive feedback loops.
Kisspeptin has been observe to activate specific hypothalamic neurons that control the release of gonadotropin-releasing hormone (GnRH). This activation triggers the secretion of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) from the anterior pituitary.
Through this pathway, Kisspeptin connects the brain to the reproductive system as part of the hypothalamic–pituitary–gonadal (HPG) axis. Researchers observe how estrogen positive feedback and sex steroids enhance Kisspeptin signaling and increase kisspeptin gene expression, amplifying GnRH and LH release during specific reproductive phases.
Scientists use Kisspeptin to examine how hormonal rhythms, puberty onset, and reproductive cycles are regulated. Its signaling differs from other neuropeptides, offering unique insight into gonadotropin secretion, GnRH pulse generation, and overall reproductive function in advanced neuroendocrine models.
In experimental studies, central and peripheral administration of kisspeptin activates neurons in the rat hypothalamus. These neurons stimulate gonadotropin-releasing hormone (GnRH) release.
This activation promotes LH secretion and follicle-stimulating hormone (FSH) release, both vital for reproductive signaling. Through binding with the GPR54 (KISS1R) receptor, Kisspeptin maintains hormonal feedback balance within the HPG axis.
Researchers use this peptide to model neuroendocrine signaling and study how kisspeptin expression shapes reproductive hormone control across different experimental and biological systems.
Kisspeptin directly stimulates kisspeptin and GnRH neurons in the hypothalamus, initiating hormonal activity that drives reproductive signaling. This interaction activates the GnRH pulse generator, which regulates rhythmic GnRH release and downstream hormonal surges. [3] It also increases the secretion of luteinizing hormone (LH) and follicle-stimulating hormone (FSH), both critical for maintaining reproductive timing.
Kisspeptin’s signaling integrates environmental, neural, and hormonal cues that influence fertility cycles. Research demonstrates its vital role in coordinating hormone surges through GPR54 (KISS1R) activation.
Laboratory studies involving kisspeptin administration use this peptide to model neuroendocrine mechanisms and evaluate how pulse generation within the GnRH pulse generator supports reproductive axis synchronization in both male and female experimental models.
Current Kisspeptin research explores its influence across several scientific fields, including reproductive biology, endocrinology, and oncology. Studies examine its role in puberty onset, hormonal regulation, and fertility control through the hypothalamic–pituitary–gonadal (HPG) axis.
Researchers also investigate Kisspeptin’s connection to tumor metastasis and neuroendocrine signaling. These studies show how kisspeptin signaling integrates hormonal, neuronal, and cellular communication, supporting continued exploration in reproductive function, gene expression, and behavioral regulation.
Research on Kisspeptin has helped define how puberty begins and how the brain regulates reproductive hormone activity. Laboratory studies in female rats show that Kisspeptin stimulates gonadotropin-releasing hormone (GnRH) neurons. This activity influences the timing of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) release.
These findings link Kisspeptin signaling to sexual maturation, gonadal development, and overall reproductive coordination. Experiments using kisspeptin activation models reveal how hormonal cycles are regulated through feedback loops in the hypothalamic–pituitary–gonadal (HPG) axis. [4] Scientists continue to explore kisspeptin gene expression and kisspeptin levels as crucial factors in reproductive control and neuroendocrine balance.
Researchers use exogenous Kisspeptin in laboratory studies to analyze how hormonal feedback loops regulate fertility and reproductive timing. It interacts with gonadotropin-releasing hormone (GnRH) neurons to influence luteinizing hormone (LH) and follicle-stimulating hormone (FSH) release.
These processes help synchronize communication between the brain and reproductive organs. [5] Experimental work examines how kisspeptin signaling affects ovarian and testicular activity under varying hormonal conditions.
By studying these interactions, scientists gain a clearer understanding of neuroendocrine control, hormone regulation, and reproductive stability within the hypothalamic–pituitary–gonadal (HPG) axis framework used in controlled research environments.
The link between Kisspeptin and cancer research began with the discovery of the KISS1 gene as a metastasis suppressor gene, known as the metastasis suppressor gene kiss in early literature. Early studies found that increased kisspeptin expression correlated with reduced tumor spread in experimental models.
Researchers soon focused on how kisspeptin signaling interacts with the GPR54 (KISS1R) receptor to regulate cell movement and communication. Laboratory studies now use kisspeptin analogs to explore molecular mechanisms behind tumor metastasis, cell adhesion, and migration control. [6] This research continues to expand understanding of gene expression patterns and how cellular signaling contributes to metastasis suppression.
Scientific studies show that Kisspeptin plays a vital role in linking the brain’s neuroendocrine systems with hormonal regulation. It affects neuronal activity in regions associated with mood, motivation, and reproductive behavior in research contexts.
Research also indicates that kisspeptin neurons interact with neurotransmitters and endogenous opioid peptide systems to coordinate hormonal and behavioral responses. [7] Laboratory models use Kisspeptin to study how environmental and neural signals shape hormone release through the hypothalamic–pituitary–gonadal (HPG) axis.
Ongoing research explores how kisspeptin signaling supports neuroendocrine balance, behavioral coordination, and hormone feedback under carefully monitored experimental and physiological conditions.
Laboratory research on Kisspeptin has revealed its central role in controlling gonadotropin-releasing hormone (GnRH) activity and maintaining hypothalamic–pituitary–gonadal (HPG) axis coordination.
Studies consistently show that kisspeptin signaling regulates puberty onset, fertility cycles, and hormonal synchronization in laboratory studies. Investigations highlight how GPR54 (KISS1R) activation drives luteinizing hormone (LH) and follicle-stimulating hormone (FSH) release.
Research also explores its function as a metastasis suppressor gene, linking it to tumor and cellular regulation. Ongoing experiments continue to confirm kisspeptin’s importance as a key peptide for studying reproductive function, neuroendocrine communication, and gene expression mechanisms in scientific research.
Each batch of Kisspeptin Peptide (5mg) undergoes strict analytical verification to confirm purity, identity, and molecular stability. Quality assurance testing uses advanced methods such as HPLC and mass spectrometry to validate peptide composition. These tests confirm sequence integrity, molecular weight, and consistency between production runs.
Verified Certificates of Analysis (COAs) provide transparency for researchers. Through this process, laboratories receive reliable, research-grade peptides that meet stringent standards for reproducibility, purity, and experimental reliability in scientific applications.
Each Kisspeptin Peptide (5mg) batch includes a Certificate of Analysis (COA) detailing purity percentage, molecular weight, and verified peptide sequence. Analytical methods such as HPLC and mass spectrometry confirm identity and composition. Testing occurs under controlled laboratory conditions to maintain precision and consistency.
The COA ensures transparency for researchers and verifies research-grade quality. Peptides Online provides COAs with every order to support traceability and quality verification. This allows you to buy Kisspeptin with confidence. These documents support reproducibility, traceability, and adherence to strict quality assurance standards across all peptide-based research applications.
The peptide profile of Kisspeptin confirms alignment with the reference sequence derived from the KISS1 gene. Using HPLC, analysts examine retention time to verify purity and consistency across production batches. Mass spectrometry and peptide mapping validate sequence integrity and molecular accuracy.
Independent third-party labs may also perform verification for transparency. A purity level of ≥98% is maintained to support reproducible research outcomes. All chromatograms, purity reports, and analytical data appear within the COA, providing scientists with complete documentation for quality assurance.
Kisspeptin Peptide (5mg) is supplied as a lyophilized powder to preserve its structural integrity and research-grade quality. The freeze-drying process maintains peptide stability during shipping and long-term storage. To protect its molecular composition, the product should remain sealed, dry, and stored at low temperatures away from light and moisture.
After reconstitution, refrigeration is recommended for short-term use. Under proper handling, Kisspeptin remains stable for extended periods, as supported by analytical monitoring. Peptides Online packages each vial under controlled laboratory conditions to ensure consistent purity, accuracy, and reliability for ongoing peptide-based research applications.
Kisspeptin Peptide (5mg) is provided as a lyophilized powder to maintain maximum stability and preserve structural integrity. The freeze-drying process removes moisture, protecting the peptide during transport and long-term storage.
This dry format allows precise reconstitution for consistent laboratory testing. Each vial is sealed under sterile conditions to maintain purity and prevent contamination. The lyophilized form supports reproducibility in research focused on kisspeptin signaling, gonadotropin secretion, and gene expression.
Peptides Online follows strict laboratory protocols to guarantee quality, accuracy, and dependable performance in advanced peptide-based research studies.
Store Kisspeptin Peptide (5mg) in its lyophilized state at or below –20°C to preserve molecular stability. Keep vials tightly sealed and protected from moisture and light. For reconstitution, use sterile solvents in a clean environment to maintain purity.
After reconstitution, refrigerate for short-term use or freeze for longer storage. Avoid repeated freeze–thaw cycles, as they may degrade peptide quality. Handle Kisspeptin samples in temperature-controlled conditions to ensure consistent results and maintain research-grade reliability throughout all experimental applications and laboratory studies.
Kisspeptin Peptide (5mg) is intended strictly for laboratory research use only. It is not approved for human, veterinary, or diagnostic purposes. This product must be handled exclusively by qualified professionals in controlled research environments following all safety and compliance standards. The information provided here is for scientific and educational reference. It should not be interpreted as medical, therapeutic, or legal advice. All data are presented to promote transparency, accuracy, and responsible research use of Kisspeptin Peptide (5mg) in academic and laboratory-based investigations.
