Novel 4-(4-Aryl)cyclohexyl-1-(2-pyridyl)piperazines as Δ8−Δ7 Sterol Isomerase (Emopamil Binding Protein) Selective Ligands with Antiproliferative Activity
摘要:
To find Delta(8)-Delta(7) sterol isomerase (EBP) selective ligands, various arylpiperazines previously studied and structurally related to some a receptors ligands were preliminarily screened. Consequently, a novel series of 2- or 2,6-disubstituted (CH3, CH3O, 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 a receptors. The most selective 2,6-dimethoxy derivative (cis-33) demonstrated the highest potency (EC50 = 12.9 mu M) 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 its a starting point for developing new anticancer drugs.
Novel 4-(4-Aryl)cyclohexyl-1-(2-pyridyl)piperazines as Δ8−Δ7 Sterol Isomerase (Emopamil Binding Protein) Selective Ligands with Antiproliferative Activity
摘要:
To find Delta(8)-Delta(7) sterol isomerase (EBP) selective ligands, various arylpiperazines previously studied and structurally related to some a receptors ligands were preliminarily screened. Consequently, a novel series of 2- or 2,6-disubstituted (CH3, CH3O, 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 a receptors. The most selective 2,6-dimethoxy derivative (cis-33) demonstrated the highest potency (EC50 = 12.9 mu M) 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 its a starting point for developing new anticancer drugs.
[EN] COMPOUNDS AND METHODS OF PROMOTING MYELINATION<br/>[FR] COMPOSÉS ET PROCÉDÉS DE STIMULATION DE LA MYÉLINISATION
申请人:UNIV CASE WESTERN RESERVE
公开号:WO2018022904A2
公开(公告)日:2018-02-01
A method of promoting the generation of oligodendrocytes from oligodendrocyte precursor cells by enhancing their survival and/or maturation includes administering to the cell an effective amount of an agent that enhances and/or induces accumulation of Δ8,9-unsaturated sterol intermediates of the cholesterol biosynthesis pathway in the oligodendrocyte precursor cells.