Peptide detail

Leuprorelin

Leuprorelin is a synthetic nonapeptide analog of gonadotropin-releasing hormone (GnRH). Its primary mechanism of action involves initial stimulation followed by profound and sustained desensitization of pituitary GnRH receptors, leading to a downregulation of gonadotropin (LH and FSH) secretion and, consequently, a suppression of gonadal steroidogenesis. This results in a medical castration state. In research, it is extensively used as a model compound to study the effects of sex hormone ablation in various contexts, including oncology (e.g., prostate and breast cancer models), endocrinology (e.g., precocious puberty, endometriosis), and reproductive biology. Key characteristics include its high potency, superagonist activity, and the necessity for sustained-release depot formulations (e.g., acetate or pamoate salts) to maintain continuous receptor downregulation, which distinguishes it from native GnRH's pulsatile action. Its peptide structure (pGlu-His-Trp-Ser-Tyr-D-Leu-Leu-Arg-Pro-NHEt) incorporates a D-amino acid substitution to enhance metabolic stability.