Pregnenolone acetate

Pregnenolone acetate is a synthetic C3-acetate ester derivative of the endogenous steroid pregnenolone, which serves as the primary precursor in the biosynthesis of progestogens, glucocorticoids, mineralocorticoids, androgens, and estrogens (PubChem CID 92439). In biological systems, pregnenolone is synthesized from cholesterol by the mitochondrial enzyme CYP11A1 and is critical for endocrine function. Beyond its role as a metabolic intermediate, pregnenolone acts as a neurosteroid, influencing neuronal plasticity and cognitive function by binding to Microtubule-Associated Protein 2 (MAP2) to promote microtubule assembly and stability (Fontaine-Lenoir et al., 2006). Historically, pregnenolone acetate was utilized in the 1940s and 1950s for its perceived anti-inflammatory properties in conditions such as rheumatoid arthritis before being largely superseded by more potent synthetic corticosteroids (PubMed). Because pregnenolone acetate is a chemical compound and therapeutic agent rather than a biological entity that mediates drug action, it is classified as a ligand/drug rather than a traditional therapeutic target.

Other names

3β-acetoxypregn-5-en-20-onePregnen-3β-ol-20-one acetateArthenolone acetatePrenolone acetateAcetoxypregnenolone

Pregnenolone acetate acts as a synthetic prodrug that is hydrolyzed in vivo to pregnenolone. Pregnenolone functions as a metabolic precursor to all major steroid hormone classes and acts as a neurosteroid by binding to Microtubule-Associated Protein 2 (MAP2) to enhance microtubule polymerization and by allosterically modulating GABA-A and NMDA receptors.