PMID- 18328811 OWN - NLM STAT- MEDLINE DCOM- 20080422 LR - 20221207 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 369 IP - 3 DP - 2008 May 9 TI - Functional polymorphisms in carboxylesterase1A2 (CES1A2) gene involves specific protein 1 (Sp1) binding sites. PG - 939-42 LID - 10.1016/j.bbrc.2008.02.120 [doi] AB - Carboxylesterase 1 (CES1) is involved in metabolic activation of a variety of prodrugs into active derivatives and plays an important role in pharmacokinetics. We previously reported that a single nucleotide polymorphism (SNP), -816A/C of the CES1A2 gene associates with the responsiveness to an angiotensin-converting enzyme (ACE) inhibitor, imidapril, whose activity is achieved by CES1. To identify relevant functional polymorphisms, we re-sequenced the CES1A2 promoter region ( approximately 1kb) in 100 Japanese hypertensive patients. Altogether 10 SNPs and one insertion/deletion (I/D) were identified, among which seven SNPs and one I/D residing between -62 and -32 were in almost complete linkage disequilibrium (D'=1.00, r2=0.97). They consisted a minor and a major haplotype, the allele frequencies of which were 22% and 74%, respectively. The minor haplotype possessed two putative Sp1 binding sites while the major haplotype did not have any Sp1 binding site. The minor haplotype had a higher transcription and Sp1 binding activities than the major haplotype, invitro. The original -816A/C was in high linkage disequilibrium with these haplotypes (D'=0.92, r2=0.85), and well agreed with the efficacy of imidapril medication. These results suggest that the Sp1 binding site variation in the CES1A2 promoter is functional, and are good candidates for the pharmacogenetic studies of CES1-activated drugs. FAU - Yoshimura, Mika AU - Yoshimura M AD - Department of Molecular Epidemiology, Medical Research Institute, Tokyo Medical Dental University, 2-3-10 Kanda-surugadai, Chiyoda-ku, Tokyo 101-0062, Japan. FAU - Kimura, Tomomi AU - Kimura T FAU - Ishii, Miho AU - Ishii M FAU - Ishii, Keisuke AU - Ishii K FAU - Matsuura, Tadashi AU - Matsuura T FAU - Geshi, Eiichi AU - Geshi E FAU - Hosokawa, Masakiyo AU - Hosokawa M FAU - Muramatsu, Masaaki AU - Muramatsu M LA - eng PT - Journal Article DEP - 20080306 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Angiotensin-Converting Enzyme Inhibitors) RN - 0 (Antihypertensive Agents) RN - 0 (Imidazolidines) RN - 0 (Sp1 Transcription Factor) RN - BW7H1TJS22 (imidapril) RN - EC 3.1.1.1 (Carboxylesterase) RN - EC 3.1.1.1 (carboxylesterase 1A2, human) SB - IM MH - Amino Acid Sequence MH - Angiotensin-Converting Enzyme Inhibitors/*pharmacokinetics MH - Antihypertensive Agents/*pharmacokinetics MH - Asian People/genetics MH - Base Sequence MH - Binding Sites MH - Carboxylesterase/*genetics/metabolism MH - Electrophoretic Mobility Shift Assay MH - Gene Frequency MH - Haplotypes MH - Humans MH - Imidazolidines/*pharmacokinetics MH - Linkage Disequilibrium MH - Molecular Sequence Data MH - *Polymorphism, Single Nucleotide MH - Promoter Regions, Genetic MH - Sp1 Transcription Factor/*metabolism EDAT- 2008/03/11 09:00 MHDA- 2008/04/23 09:00 CRDT- 2008/03/11 09:00 PHST- 2008/02/21 00:00 [received] PHST- 2008/02/27 00:00 [accepted] PHST- 2008/03/11 09:00 [pubmed] PHST- 2008/04/23 09:00 [medline] PHST- 2008/03/11 09:00 [entrez] AID - S0006-291X(08)00408-7 [pii] AID - 10.1016/j.bbrc.2008.02.120 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2008 May 9;369(3):939-42. doi: 10.1016/j.bbrc.2008.02.120. Epub 2008 Mar 6.