PT - JOURNAL ARTICLE AU - Andria L. Del Tredici AU - Carsten B. Andersen AU - Erika A. Currier AU - Steven R. Ohrmund AU - Luke C. Fairbain AU - Birgitte W. Lund AU - Norman Nash AU - Roger Olsson AU - Fabrice Piu TI - Identification of the First Synthetic Steroidogenic Factor 1 Inverse Agonists: Pharmacological Modulation of Steroidogenic Enzymes AID - 10.1124/mol.107.040089 DP - 2008 Mar 01 TA - Molecular Pharmacology PG - 900--908 VI - 73 IP - 3 4099 - http://molpharm.aspetjournals.org/content/73/3/900.short 4100 - http://molpharm.aspetjournals.org/content/73/3/900.full SO - Mol Pharmacol2008 Mar 01; 73 AB - Steroidogenic factor SF-1, a constitutively active nuclear hormone receptor, is essential to the development of adrenal and gonadal glands and acts as a shaping factor of sexual determination and differentiation. Its effects are exerted primarily through the control of the synthesis of steroid hormones. The functional cell-based assay Receptor Selection and Amplification Technology (R-SAT) was used to identify potent and selective SF-1 inverse agonists through the screening of a chemical library of drug-like small-molecule entities. Among them, 4-(heptyloxy)phenol (AC-45594), a prototype inverse agonist lead, was used to show that SF-1 constitutive activity can be pharmacologically modulated by a synthetic ligand. In a physiological system of endocrine function, the expression of several reported SF-1 target genes, including SF-1 itself, was inhibited by treatment with AC-45594 and analogs. Thus, pharmacological modulation of SF-1 is critical to its function as an endocrine master regulator and has potentially important consequences to diseases in which SF-1 activity is critical. The American Society for Pharmacology and Experimental Therapeutics