Cited by 222Nitric Oxide and Endothelin EffectsMitochondrial Function and PathologyCardiac Ischemia and Reperfusion

A mitochondria-targeted S -nitrosothiol modulates respiration, nitrosates thiols, and protects against ischemia-reperfusion injury

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Prime, Tracy A., Blaikie, Frances H., Evans, Cameron, Nadtochiy, Sergiy M., James, Andrew M., Dahm, Christina C., Vitturi, Dario A., Patel, Rakesh P. +10 more·2009·Proceedings of the National Academy of Sciences

Abstract

Nitric oxide (NO • ) competitively inhibits oxygen consumption by mitochondria at cytochrome c oxidase and S -nitrosates thiol proteins. We developed mitochondria-targeted S -nitrosothiols (MitoSNOs) that selectively modulate and protect mitochondrial function. The exemplar MitoSNO1, produced by covalently linking an S -nitrosothiol to the lipophilic triphenylphosphonium cation, was rapidly and extensively accumulated within mitochondria, driven by the membrane potential, where it generated NO • and S -nitrosated thiol proteins. MitoSNO1-induced NO • production reversibly inhibited respiration at cytochrome c oxidase and increased extracellular oxygen concentration under hypoxic conditions. MitoSNO1 also caused vasorelaxation due to its NO • generation. Infusion of MitoSNO1 during reperfusion was protective against heart ischemia-reperfusion injury, consistent with a functional modification of mitochondrial proteins, such as complex I, following S -nitrosation. These results support the idea that selectively targeting NO • donors to mitochondria is an effective strategy to reversibly modulate respiration and to protect mitochondria against ischemia-reperfusion injury.

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  • Prior work showed that complex I is inhibited by various nitric oxide donors in vitro and that this inhibition is associated with S-nitrosation.

    “previous work has shown that complex I is inhibited by various nitric oxide donors in vitro and that this inhibition is associated with S-nitrosation2,10,11,21–24.”
  • MitoSNO contains an S-nitrosating moiety attached to a lipophilic triphenylphosphonium cation that leads to its rapid and extensive uptake within mitochondria in vivo.

    “We used MitoSNO to examine mitochondrial S-nitrosation specifically, as it contains an S-nitrosating moiety attached to a lipophilic triphenylphosphonium cation that leads to its rapid and extensive uptake within mitochondria in vivo11.”
  • Pre-ischemic or postischemic use of mitochondrially targeted S-nitrosothiols lessens ischemia-reperfusion injury.

    “In separate studies, pre-ischemic (306) or postischemic (336) use of these reagents lessened ischemia-reperfusion injury”

    From Redox regulation of mitochondrial function (2012) · cites this paper as [336]

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Authors
Prime, T. A., Blaikie, F. H., Evans, C., Nadtochiy, S. M., James, A. M., Dahm, C. C., Vitturi, D. A., Patel, R. P., Hiley, C. R., Abakumova, I., Requejo, R., Chouchani, E. T., Hurd, T. R., Garvey, J. F., Taylor, C. T., Brookes, P. S., Smith, R. A. J., & Murphy, M. P.
Affiliations
  • MRC Mitochondrial Biology Unit (GB)
  • University of Otago (NZ)
  • University of Rochester Medicine (US)
  • Department of Pathology and Center for Free Radical Biology, University of Alabama at Birmingham, 901 19th Street South, Birmingham, AL 35294;
  • University of Alabama at Birmingham (US)
  • University of Cambridge (GB)
  • MRC Mitochondrial Biology Unit, Hills Road, Cambridge CB2 0XY, United Kingdom;
  • University College Dublin (IE)
Venue
Proceedings of the National Academy of Sciences
Published
2009-06-30
Volume
106
Issue
26
Pages
10764-10769
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2061490621
Cited by
222
References
20
Citations by year
2026: 2 · 2025: 8 · 2024: 7 · 2023: 9 · 2022: 11 · 2021: 8 · 2020: 11 · 2019: 8 · 2018: 11 · 2017: 9 · 2016: 16 · 2015: 11 · 2014: 28 · 2013: 24 · 2012: 18
FWCI
13.03
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • University of Otago
  • Health Research Board
  • Science Foundation Ireland
  • National Institutes of Health
  • Medical Research Council
  • National Heart, Lung, and Blood Institute (HL-071158, R01HL071158)
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cardiac Ischemia and Reperfusion
Keywords
nitric oxide, S-nitrosylation, cytochrome c oxidase inhibition, mitochondrial respiration, ischemia-reperfusion injury, heart protection, triphenylphosphonium, membrane potential, hypoxia, vasorelaxation, complex I, mitochondrial proteins
MeSH terms
Animals, Aorta, Thoracic, Cell Line, Heart, HeLa Cells, Humans, Male, Mice, Inbred C57BL, Mitochondria, Mitochondria, Heart, Nitric Oxide, Oxygen Consumption, Mass Spectrometry, Sulfhydryl Compounds, Vasodilation, Reperfusion Injury, Nitrosation, Rats, Sprague-Dawley, S-Nitrosothiols, Myoblasts, Electron Transport Complex I, Mice, Rats, Membrane Potential, Mitochondrial, In Vitro Techniques

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