Cited by 37Bioactive Compounds and Antitumor AgentsNitric Oxide and Endothelin EffectsRedox biology and oxidative stress

Inhibition of human vascular nadph oxidase by apocynin derived oligophenols

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Mora-Pale, Mauricio, Weïwer, Michel, Yu, Jingjing, Linhardt, Robert J., Dordick, Jonathan S.·2009·Bioorganic & Medicinal Chemistry

Abstract

Enzymatic oxidation of apocynin, which may mimic in vivo metabolism, affords a large number of oligomers (apocynin oxidation products, AOP) that inhibit vascular NADPH oxidase. In vitro studies of NADPH oxidase activity were performed to identify active inhibitors, resulting in a trimer hydroxylated quinone (IIIHyQ) that inhibited NADPH oxidase with an IC(50)=31nM. Apocynin itself possessed minimal inhibitory activity. NADPH oxidase is believed to be inhibited through prevention of the interaction between two NADPH oxidase subunits, p47(phox) and p22(phox). To that end, while apocynin was unable to block the interaction of his-tagged p47(phox) with a surface immobilized biotinylated p22(phox) peptide, the IIIHyQ product strongly interfered with this interaction (apparent IC(50)=1.6microM). These results provide evidence that peroxidase-generated AOP, which consist of oligomeric phenols and quinones, inhibit critical interactions that are involved in the assembly and activation of human vascular NADPH oxidase.

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Crossref · 10.1016/j.bmc.2009.05.061

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  • Apocynin was long considered as a specific Nox2 inhibitor, but several studies have shown that this is not the case.

    “Apocynin was long considered as specific Nox2 inhibitor. However, several studies have shown that this is indeed not the case.”

    From Functions of ROS in Macrophages and Antimicrobial Immunity (2021) · cites this paper as [398]

  • Apocynin directly scavenges ROS due to its antioxidant capacities.

    “Instead, apocynin directly scavenges ROS due to its antioxidant capacities [340,395,396,397,398].”

    From Functions of ROS in Macrophages and Antimicrobial Immunity (2021) · cites this paper as [398]

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Research works printed but not linked: 3

  1. [31]Vejraska M Micek R Stipek S Biochim Biophys Acta 2005 1722 143 147 15716123
  2. [32]Dodd OJM Pearse DB Am J Physiol Heart Circ Physiol 2000 279 303 312 10899070
  3. [33]Muijers RBR van den Worm E Folkerts G Beukelman CJ Koster AS Postma DS Nijkamp FP Brit J Pharmacol 2000 130 932 936 10864902 PMC1572147

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Authors
Mora-Pale, M., Weïwer, M., Yu, J., Linhardt, R. J., & Dordick, J. S.
Affiliations
Rensselaer Polytechnic Institute (US)
Corresponding author
  • Linhardt, Robert J.
  • Dordick, Jonathan S.
Venue
Bioorganic & Medicinal Chemistry
Publisher
Elsevier BV
Published
2009-07
Volume
17
Issue
14
Pages
5146-5152
ISSN
0968-0896 (ISSN-L)
OpenAlex
W2137518469
Cited by
36
References
50
Citations by year
2026: 1 · 2023: 2 · 2022: 1 · 2021: 6 · 2019: 2 · 2018: 3 · 2016: 2 · 2015: 2 · 2014: 1 · 2013: 5 · 2012: 6
FWCI
5.29
Type
journal article
Language
en
Open access
Locations
  • Bioorganic & Medicinal Chemistry (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Center for Complementary and Integrative Health (R21AT002115, AT002115)
Topics
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Toxicology › Bioactive Compounds and Antitumor Agents
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
apocynin, NADPH oxidase, quinones, p47phox, p22phox, enzyme inhibition, oligomerization
MeSH terms
Acetophenones, Amino Acid Sequence, Biotin, Cells, Cultured, Enzyme Inhibitors, Humans, Molecular Sequence Data, Peroxidase, Oxidation-Reduction, Peptides, Superoxides, NADPH Oxidases, Endothelial Cells, Cytochromes c

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