Abstract:
:To find Delta(8)-Delta(7) sterol isomerase (EBP) selective ligands, various arylpiperazines previously studied and structurally related to some sigma receptors ligands were preliminarily screened. Consequently, a novel series of 2- or 2,6-disubstituted (CH(3), CH(3)O, Cl, F) cis- and trans-4-(4-aryl)cyclohexyl-1-(2-pyridyl)piperazines was developed. Radioreceptor binding assays evidenced cis-19, cis-30 and cis-33 as new ligands with nanomolar affinity toward EBP site and a good selectivity relative to EBP-related sigma receptors. The most selective 2,6-dimethoxy derivative (cis-33) demonstrated the highest potency (EC(50) = 12.9 microM) and efficacy (70%) in inhibiting proliferation of human prostate cancer PC-3 cell line. Among the reference compounds, sigma(2) agonist 36 (PB28) reached the maximum efficacy (100%), suggesting the contribution of the sigma(2) receptor to the antiproliferative activity. This novel class of EBP inhibitors represents a valuable tool for investigating the last steps of cholesterol biosynthesis and related pathologies, as well as a starting point for developing new anticancer drugs.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Berardi F,Abate C,Ferorelli S,de Robertis AF,Leopoldo M,Colabufo NA,Niso M,Perrone Rdoi
10.1021/jm800965bsubject
Has Abstractpub_date
2008-12-11 00:00:00pages
7523-31issue
23eissn
0022-2623issn
1520-4804pii
10.1021/jm800965bjournal_volume
51pub_type
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