Effect of Celecoxib on Differentiation of Human Induced Pluripotent Stem Cells into Hepatocytes Involves STAT5 Activation

Drug Metabolism and Disposition : the Biological Fate of Chemicals
Hiroki OkumuraTamihide Matsunaga

Abstract

The liver abundantly expresses various drug-metabolizing enzymes and, thus, plays a central role in drug metabolism. In this regard, cytochrome P450 (CYP) is responsible for drug metabolism in the liver. Therefore, since CYP3A4 accounts for approximately 30% of the CYPs, the prediction of hepatic CYP3A4-mediated pharmacokinetics is essential for drug development. Human induced pluripotent stem cell-derived hepatocytes (hiHep) have become a major model of drug metabolism in drug development studies. However, drug metabolizing activities, such as those involving CYP3A4, are lower in hiHep than in human primary hepatocytes (HPHs). Recently, it was revealed that celecoxib upregulates the expression of CYPs to normal levels through the activation of signal transducer and transcriptional activation factor 5 (STAT5). Therefore, we investigated whether celecoxib treatment could normalize the low drug metabolism activities in hiHep. The mRNA expression levels of hepatic markers [asialoglycoprotein receptor 1 (ASGR1) and tyrosine aminotransferase (TAT)] and metabolic enzymes (UDP-glucuronosyltransferase 1A1 and CYP3A4) in hiHep significantly increased after celecoxib treatment. These mRNA expression levels were 7-, 1/3-, 1/2-, and 1/10-f...Continue Reading

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Citations

Aug 14, 2019·Nihon yakurigaku zasshi. Folia pharmacologica Japonica·Takahiro Iwao, Tamihide Matsunaga

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