Kisspeptin — Overview

Kisspeptin is a naturally occurring neuropeptide encoded by the KISS1 gene and is widely recognized as the master regulator of the reproductive hormone axis. It plays a central role in controlling GnRH (gonadotropin‑releasing hormone) secretion, making it essential for puberty, fertility, and overall reproductive function.

Originally discovered for its metastasis‑suppressing properties, early literature referred to it as “metastin.” Research focus later shifted toward its profound influence on reproductive signaling.

Background & Research Interest

Kisspeptin is extensively studied in laboratory settings involving:

• Hypothalamic–pituitary–gonadal (HPG) axis regulation
• Puberty onset and reproductive maturation
• Fertility and gonadotropin signaling
• GnRH pulsatility and neuroendocrine control
• Metastasis suppression pathways (historical research origin)

Its ability to activate KISS1R (GPR54) receptors on GnRH neurons makes it a key model peptide for understanding reproductive hormone cascades.

General Characteristics

• Peptide Type: Neuropeptide
• Active Form: Kisspeptin‑10 (10 amino acids)
• Receptor: KISS1R / GPR54
• Primary Function: Stimulates GnRH → LH/FSH → downstream sex hormone production
• Half‑Life: Short‑acting (~28 minutes) with pulsatile activity
• Discovery Context: Initially identified as a metastasis suppressor before its reproductive role was understood

Research Applications

Kisspeptin is commonly examined in studies involving:

• Fertility and reproductive endocrinology
• Puberty disorders and delayed maturation
• Hypogonadism models
• Natural LH/FSH stimulation pathways
• Comparisons to hCG in ovulation‑triggering research (notably in IVF models)

Form & Handling

• Form: Lyophilized powder
• Solubility: Reconstituted in sterile, research‑grade solvents
• Storage: Cool, dry environment; protect from light
• Purity: Typically ≥99% for controlled laboratory research

For laboratory research only. Not for human consumption.