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Updated: Mar 18, 2026

Fast and Specific Assessment of the Halogenating Peroxidase Activity in Leukocyte-enriched Blood Samples
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Characterization of chemical features of potent myeloperoxidase inhibitors

Jalal Soubhye1, Franck Meyer2, Paul Furtmüller3

  • 1Laboratoire de Chimie Pharmaceutique Organique, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium.

Future Medicinal Chemistry
|July 13, 2016
PubMed
Abstract

Insights

Researchers identified a new potent inhibitor for myeloperoxidase (MPO), an enzyme linked to inflammation. This discovery aids in designing new anti-inflammatory drugs by understanding MPO inhibition mechanisms.

Area of Science:

  • Biochemistry
  • Pharmacology
  • Immunology

Background:

  • Myeloperoxidase (MPO) plays a key role in immunity but also contributes to inflammatory diseases through its oxidative product, hypochlorous acid (HOCl).
  • MPO's damaging oxidative effects present it as a therapeutic target for novel anti-inflammatory agents.

Purpose of the Study:

  • To elucidate the mechanism of MPO inhibition.
  • To guide drug design and improve virtual screening accuracy.
  • To understand the structure-activity relationship of MPO inhibitors.

Main Methods:

  • Docking experiments
  • Kinetic studies
  • In vitro assays

Main Results:

  • Potent MPO inhibitors require both high affinity for the active site and an oxidizable group.
  • A novel MPO inhibitor, 4-(3-hydroxy-phenoxy)-butylamine (5), was identified with an IC50 of 86 nM.

Conclusions:

  • Hydroxy-phenoxy alkylamine derivatives show promise as MPO inhibitors.
  • These compounds represent a valuable starting point for developing more effective MPO-targeted anti-inflammatory therapies.
Keywords:
E′HBSBhydrogen bondirreversible inhibitormechanism of inhibitionmyeloperoxidase inhibitoroxidizable groupreversible inhibitorsalt bridgestandard reduction potential

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