Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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Outline of Final Research Achievements |
The expression of the drug metabolizing enzymes is regulated by ligand-activated transcriptional factors. The purpose of the present study was to elucidate whether the expressions of UDP-glucuronosyltransferase isoforms are regulated by Wnt/β-catenin pathway, which is involved in embryonic development and tissue homeostasis. Huh-7 cells were treated by 30 mM LiCl, that promotes transcriptional activation of target genes by β-catenin signaling pathway. Consequently, UGT1A1, UGT1A4, UGT1A6, UGT1A9, and UGT2B7 mRNAs were increased by 2.5-, 6.4-, 2.8-, 3.3-, and 2.8-fold, respectively, following LiCl exposure for 72 hr in Huh-7 cells. Moreover, sulindac, which is known to suppress the expression of β-catenin, was exposed to Huh-7 cells with LiCl. As a result, the induction rates of UGT1A6 and UGT2B7 mRNAs were decreased by 1.8- and 1.2-fold, respectively. These results suggested that the expression of UGT1A6 and UGT2B7 mRNAs are regulated by Wnt/β- catenin pathway in Huh-7 cells.
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