Cited by 31Mitochondrial Function and PathologyRedox biology and oxidative stressCancer and biochemical research

Succinate is the controller of O 2 − /H2O2 release at mitochondrial complex I : negative modulation by malate, positive by cyanide

Zoccarato, Franco, Cavallini, Lucia, Alexandre, Adolfo·2009·Journal of Bioenergetics and Biomembranes

Abstract

Mitochondrial production of H(2)O(2) is low with NAD substrates (glutamate/pyruvate, 3 and 2 mM) (G/P) and increases over ten times upon further addition of succinate, with the formation of a sigmoidal curve (semimaximal value at 290 microM, maximal H(2)O(2) production at 600 microM succinate). Malate counteracts rapidly the succinate induced increased H(2)O(2) release and moves the succinate dependent H(2)O(2) production curve to the right. Nitric oxide (NO) and carbon monoxide (CO) are cytochrome c oxidase inhibitors which increase mitochondrial ROS production. Cyanide (CN(-)) was used to mimic NO and CO. In the presence of G/P and succinate (300 microM), CN(-) progressively increased the H(2)O(2) release rate, starting at 1.5 microM. The succinate dependent H(2)O(2) production curve was moved to the left by 30 microM CN(-). The V(max) was little modified. We conclude that succinate is the controller of mitochondrial H(2)O(2) production, modulated by malate and CN(-). We propose that succinate promotes an interaction between Complex II and Complex I, which activates O(2)(-) production.

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Crossref · 10.1007/s10863-009-9238-2

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Authors
Zoccarato, F., Cavallini, L., & Alexandre, A.
Affiliations
University of Padua (IT)
Corresponding author
Alexandre, Adolfo
Venue
Journal of Bioenergetics and Biomembranes
Published
2009-08
Volume
41
Issue
4
Pages
387-393
ISSN
  • 0145-479X (ISSN-L)
  • 1573-6881
OpenAlex
W2471095462
Cited by
31
References
37
Citations by year
2026: 1 · 2022: 1 · 2021: 1 · 2020: 3 · 2019: 1 · 2017: 2 · 2016: 2 · 2015: 2 · 2013: 6 · 2012: 5
FWCI
1.61
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Bioenergetics and Biomembranes (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cancer and biochemical research
Keywords
succinic acid, mitochondrial complex I, superoxide production, hydrogen peroxide release, malate, cyanide, nitric oxide, carbon monoxide, cytochrome c oxidase inhibition, mitochondrial reactive oxygen species
MeSH terms
Animals, Cells, Cultured, Cyanides, Dose-Response Relationship, Drug, Hydrogen Peroxide, Malates, Mitochondria, Superoxides, Reactive Oxygen Species, Succinic Acid, Electron Transport Complex I, Rats

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