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KMID : 0043320170400060727
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Archives of Pharmacal Research
2017 Volume.40 No. 6 p.727 ~ p.735
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Inhibition of cytochrome P450 and uridine 5′-diphospho-glucuronosyltransferases by MAM-2201 in human liver microsomes
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Kong Tae-Yeon
Kim Ju-Hyun
Kwon Soon-Sang
Cheong Jae-Chul
Kim Hee-Seung
In Moon-Kyo
Lee Hye-Suk
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Abstract
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MAM-2201, a synthetic cannabinoid, is a potent agonist of the cannabinoid receptors and is increasingly used as an illicit recreational drug. The inhibitory effects of MAM-2201 on major drug-metabolizing enzymes such as cytochrome P450s (CYPs) and uridine 5′-diphospho-glucuronosyltransferases (UGTs) have not yet been investigated although it is widely abused, sometimes in combination with other drugs. We evaluated the inhibitory effects of MAM-2201 on eight major human CYPs (CYPs 1A2, 2A6, 2B6, 2C8, 2C9, 2C19, 2D6, and 3A4) and six UGTs (UGTs 1A1, 1A3, 1A4, 1A6, 1A9, and 2B7) of pooled human liver microsomes; we thus explored potential MAM-2201-induced drug interactions. MAM-2201 potently inhibited CYP2C9-catalyzed diclofenac 4′-hydroxylation, CYP3A4-catalyzed midazolam 1′-hydroxylation, and UGT1A3-catalyzed chenodeoxycholic acid 24-acyl-glucuronidation, with Ki values of 5.6, 5.4 and 5.0 μM, respectively. MAM-2201 exhibited mechanism-based inhibition of CYP2C8-catalyzed amodiaquine N-de-ethylation with Ki and kinact values of 1.0 μM and 0.0738 min?1, respectively. In human liver microsomes, MAM-2201 (50 μM) negligibly inhibited CYP1A2, CYP2A6, CYP2B6, CYP2C19, CYP2D6, UGT1A1, UGT1A4, UGT1A6, UGT1A9, and UGT2B7. Based on these in vitro results, we conclude that MAM-2201 has the potential to trigger in vivo pharmacokinetic drug interactions when co-administered with substrates of CYP2C8, CYP2C9, CYP3A4, and UGT1A3.
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KEYWORD
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MAM-2201, Drug?drug interaction, Human liver microsomes, Cytochrome P450, UDP-glucuronosyltransferase
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