Kisspeptin

Overview

Kisspeptin is a neuropeptide that acts as the master upstream regulator of the hypothalamic-pituitary-gonadal (HPG) axis. Produced by neurons in the hypothalamic arcuate and anteroventral periventricular nuclei, it is the primary activator of GnRH (gonadotropin-releasing hormone) neurons, making it the gatekeeper of reproductive function.

Mechanism of Action

Kisspeptin binds to GPR54 (KISS1R) on GnRH neurons, stimulating GnRH release. This cascade triggers LH and FSH secretion from the pituitary, which drives gonadal hormone production (testosterone and estrogen). Kisspeptin integrates metabolic, stress, and photoperiod signals to regulate reproductive function appropriately for environmental conditions.

Research Context

The discovery of kisspeptin's role in puberty initiation and reproductive regulation has been one of the most significant developments in reproductive endocrinology. Research explores its use in fertility treatment, diagnosis of reproductive disorders, and understanding of puberty mechanisms.

Key Research Areas

Considerations for Researchers

Multiple kisspeptin forms exist (Kisspeptin-10, -54, etc.) with different potencies and durations. Verify which form you are purchasing. Store at -20C.