Defining determinant molecular properties for the blockade of the apamin-sensitive SKCa channel in guinea-pig hepatocytes:: the influence of polarizability and molecular geometry

被引:6
作者
Galanakis, D [1 ]
Ganellin, CR
机构
[1] Aristotle Univ Thessaloniki, Sch Pharm, Dept Pharmaceut Chem, Thessaloniki 54124, Greece
[2] UCL, Dept Chem, London WC1E 6BT, England
关键词
polarizability; QSAR; SKCa blockers; apamin; UCL; 1848;
D O I
10.1016/j.bmcl.2004.05.031
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
QSAR studies of a series of blockers of the SKCa channel in guinea-pig hepatocytes suggests that the polarizability of the blocker is an important factor controlling the binding to the channel. It is suggested that, upon binding, an ion-pair is formed, a process that is promoted by the reorganization of the water molecules. The polarizability is not adequate to describe the potency of the most potent blockers with a good stereochemical fit to the channel, presumably due to more specific interactions taking place. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:4031 / 4035
页数:5
相关论文
共 29 条
[1]  
BENTON DCH, 1999, BRIT J PHARMACOL, V128, P39
[2]  
Castle NA, 1999, PERSPECT DRUG DISCOV, V16, P131
[3]   DEQUALINIUM - A POTENT INHIBITOR OF APAMIN-SENSITIVE K(+) CHANNELS IN HEPATOCYTES AND OF NICOTINIC RESPONSES IN SKELETAL-MUSCLE [J].
CASTLE, NA ;
HAYLETT, DG ;
MORGAN, JM ;
JENKINSON, DH .
EUROPEAN JOURNAL OF PHARMACOLOGY, 1993, 236 (02) :201-207
[4]   Isolation of a novel potassium channel gene hSKCa3 containing a polymorphic CAG repeat: a candidate for schizophrenia and bipolar disorder? [J].
Chandy, KG ;
Fantino, E ;
Wittekindt, O ;
Kalman, K ;
Tong, LL ;
Ho, TH ;
Gutman, GA ;
Crocq, MA ;
Ganguli, R ;
Nimgaonkar, V ;
Morris-Rosendahl, DJ ;
Gargus, JJ .
MOLECULAR PSYCHIATRY, 1998, 3 (01) :32-37
[5]   The nature of topological parameters. I. Are topological parameters 'fundamental properties'? [J].
Charton, M .
JOURNAL OF COMPUTER-AIDED MOLECULAR DESIGN, 2003, 17 (02) :197-209
[6]   Bis-quinolinium cyclophanes:: 8,14-diaza-1,7(1,4)-diquinolinacyclo-tetradecaphane (UCL 1848), a highly potent and selective, nonpeptidic blocker of the apamin-sensitive Ca2+-activated K+ channel [J].
Chen, JQ ;
Galanakis, D ;
Ganellin, CR ;
Dunn, PM ;
Jenkinson, DH .
JOURNAL OF MEDICINAL CHEMISTRY, 2000, 43 (19) :3478-3481
[7]   Model studies of the function of blockers on the small conductance potassium ion channel [J].
Ciechanwicz-Rutkowska, C ;
Lewinski, K ;
Oleksyn, B ;
Stec, B .
JOURNAL OF PEPTIDE RESEARCH, 2003, 62 (03) :125-133
[8]   EFFECTS OF APAMIN, QUININE AND NEUROMUSCULAR BLOCKERS ON CALCIUM-ACTIVATED POTASSIUM CHANNELS IN GUINEA-PIG HEPATOCYTES [J].
COOK, NS ;
HAYLETT, DG .
JOURNAL OF PHYSIOLOGY-LONDON, 1985, 358 (JAN) :373-394
[9]   AM1-SM2 AND PM3-SM3 PARAMETERIZED SCF SOLVATION MODELS FOR FREE-ENERGIES IN AQUEOUS-SOLUTION [J].
CRAMER, CJ ;
TRUHLAR, DG .
JOURNAL OF COMPUTER-AIDED MOLECULAR DESIGN, 1992, 6 (06) :629-666
[10]   AN SCF SOLVATION MODEL FOR THE HYDROPHOBIC EFFECT AND ABSOLUTE FREE-ENERGIES OF AQUEOUS SOLVATION [J].
CRAMER, CJ ;
TRUHLAR, DG .
SCIENCE, 1992, 256 (5054) :213-217