Artocarpin isolated from an agricultural plant Artocarpus communis has shows anti‐inflammation and anticancer activities. In this study, we utilized recombinant human UDP‐glucuronosyltransferasesupersomes (UGTs) and human liver microsomes to explore its inhibitory effect on UGTs and cytochrome p450 enzymes (CYPs). Chemical inhibition studies and screening assays with recombinant human CYPs were used to identify if CYP isoform is involved in artocarpin metabolism. Artocarpin showed strong inhibition against UGT1A3, UGT1A6, UGT1A7, UGT1A8, UGT1A9, UGT1A10, UGT2B7, CYP2C8 and CYP3A4. In particular, artocarpin exhibited competitive inhibition against CYP3A4 and noncompetitive inhibition against UGT1A3 and UGT1A7. The half inhibition concentration values for CYP3A4, UGT1A3 and UGT1A7 were 4.67, 3.82 and 4.82 μm, and the inhibition kinetic parameters for them were 0.78, 2.67 and 3.14 μm, respectively. After artocarpin was incubated in human liver microsomes and determined by HPLC, we observed its main metabolites (M1 and M2). In addition, we proved that CYP2D6 played the key role in the biotransformation of artocarpin in human liver microsomes. The result of molecular docking further confirmed that artocarpin interacted with CYP2D6, CYP2C8 and CYP3A4 through hydrogen bonds. This study provided preliminary results for further research on artocarpin or artocarpin‐containing herbs.
Biomedical Chromatography – Wiley
Published: Jan 1, 2018
Keywords: ; ; ;
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