Sulfortransferases in a Human Colon Carcinoma Cell Line, Caco-2
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概要
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We investigated the expression of sulfotransferases (STs) in the human colon carcinoma cell line, Caco-2,which is widely used as a human intestine model for orally administered drugs. By reverse transcription-polymerase chain reaction (RT-PCR), we could detect mRNA expressions of phenol STs (P-ST), hydroxysteroid ST (HS-ST) and estrogen ST (E-ST). Treatment with 1,25-dihydroxyvitamine D_3,which induces CYP3A4 expression in Caco-2 cells, did not affect the ST expression of the cells. We detected significant P-ST activity toward 2-naphthol and dopamine in the cell extract. We also observed detectable HS-ST activity toward dehydroepiandrosterone (DHEA), but no E-ST activity toward β-estradiol was observed in the extract. Analyses by RT-PCR and separation of P-ST activities on ion-exchange column chromatography showed that the thermolabile monoamine phenol sulfotransferase (M-PST) is dominant in Caco-2 cells.
- 公益社団法人日本薬学会の論文
- 2000-07-01
著者
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TAMURA Hiro-omi
Kyoritsu College of Pharacy
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Satoh Tomoko
Kyoritsu College Of Pharmacy
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MATSUI Michio
Kyoritsu College of Pharmacy
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