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Baeyer-Villiger Monooxygenase FMO5 as Entry Point in Drug Metabolism.

Abstract：

:Flavin-containing monooxygenases (FMOs) are emerging as effective players in oxidative drug metabolism. Until recently, the functions of the five human FMO isoforms were mostly linked to their capability of oxygenating molecules containing soft N- and S-nucleophiles. However, the human FMO isoform 5 was recently shown to feature an atypical activity as Baeyer-Villiger monooxygenase. With the aim of evaluating such an alternative entry point in the metabolism of active pharmaceutical ingredients, we selected and tested drug molecules bearing a carbonyl group on an aliphatic chain. Nabumetone and pentoxifylline, two widely used pharmaceuticals, were thereby demonstrated to be efficiently oxidized in vitro by FMO5 to the corresponding acetate esters with high selectivity. The proposed pathways explain the formation of a predominant plasma metabolite of pentoxifylline as well as the crucial transformation of the pro-drug nabumetone into the pharmacologically active compound. Using the recombinant enzyme, the ester derivatives of both drugs were obtained in milligram amounts, purified, and fully characterized. This protocol can potentially be extended to other FMO5 candidate substrates as it represents an effective and robust bench-ready platform applicable to API screening and metabolite synthesis.

journal_name

ACS Chem Biol

journal_title

ACS chemical biology

authors

Fiorentini F,Romero E,Fraaije MW,Faber K,Hall M,Mattevi A

doi

10.1021/acschembio.7b00470

subject

Has Abstract

pub_date

2017-09-15 00:00:00

pages

2379-2387

issue

9

eissn

1554-8929

issn

1554-8937

journal_volume

12

pub_type

杂志文章

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