A GPR54-activating mutation in a patient with central precocious puberty.
Teles. Milena Gurgel MG; Bianco. Suzy D C SD; Brito. Vinicius Nahime VN; Trarbach. Ericka B EB; Kuohung. Wendy W; Xu. Shuyun S; Seminara. Stephanie B SB; Mendonca. Berenice B BB; Kaiser. Ursula B UB; Latronico. Ana Claudia AC
Key Findings
- A specific GPR54 mutation (Arg386Pro) causes prolonged signaling after kisspeptin binding.
- The mutation was identified in a girl with idiopathic central precocious puberty.
- In vitro tests showed the mutant receptor stays active longer than the normal version.
Practical Outcomes
- For biohackers, this study mainly warns that boosting kisspeptin signaling could unintentionally trigger early reproductive hormone activation. It doesn’t provide a usable protocol or dosage for longevity or performance, and suggests caution if experimenting with kisspeptin‑10.
Summary
Scientists found a genetic change (Arg386Pro) in the GPR54 receptor that makes it stay active longer when kisspeptin binds, and this over‑activity is linked to a girl developing puberty far earlier than normal.
Abstract
Gonadotropin-dependent, or central, precocious puberty is caused by early maturation of the hypothalamic-pituitary-gonadal axis. In girls, this condition is most often idiopathic. Recently, a G protein-coupled receptor, GPR54, and its ligand, kisspeptin, were described as an excitatory neuroregulator system for the secretion of gonadotropin-releasing hormone (GnRH). In this study, we have identified an autosomal dominant GPR54 mutation--the substitution of proline for arginine at codon 386 (Arg386Pro)--in an adopted girl with idiopathic central precocious puberty (whose biologic family was not available for genetic studies). In vitro studies have shown that this mutation leads to prolonged activation of intracellular signaling pathways in response to kisspeptin. The Arg386Pro mutant appears to be associated with central precocious puberty.
Study Information
pubmed
2008
2008-02-14T00:00:00.000Z
10.1056/nejmoa073443