Cited by 782Mitochondrial Function and PathologyCell death mechanisms and regulationCardiac Ischemia and Reperfusion

Cell-permeable Peptide Antioxidants Targeted to Inner Mitochondrial Membrane inhibit Mitochondrial Swelling, Oxidative Cell Death, and Reperfusion Injury

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Zhao, Kesheng, Zhao, Guo-Min, Wu, Dunli, Soong, Yi, Birk, Alex V., Schiller, Peter W., Szeto, Hazel H.·2004·Journal of Biological Chemistry

Abstract

Reactive oxygen species (ROS) play a key role in promoting mitochondrial cytochrome c release and induction of apoptosis. ROS induce dissociation of cytochrome c from cardiolipin on the inner mitochondrial membrane (IMM), and cytochrome c may then be released via mitochondrial permeability transition (MPT)-dependent or MPT-independent mechanisms. We have developed peptide antioxidants that target the IMM, and we used them to investigate the role of ROS and MPT in cell death caused by t-butylhydroperoxide (tBHP) and 3-nitropropionic acid (3NP). The structural motif of these peptides centers on alternating aromatic and basic amino acid residues, with dimethyltyrosine providing scavenging properties. These peptide antioxidants are cell-permeable and concentrate 1000-fold in the IMM. They potently reduced intracellular ROS and cell death caused by tBHP in neuronal N(2)A cells (EC(50) in nm range). They also decreased mitochondrial ROS production, inhibited MPT and swelling, and prevented cytochrome c release induced by Ca(2+) in isolated mitochondria. In addition, they inhibited 3NP-induced MPT in isolated mitochondria and prevented mitochondrial depolarization in cells treated with 3NP. ROS and MPT have been implicated in myocardial stunning associated with reperfusion in ischemic hearts, and these peptide antioxidants potently improved contractile force in an ex vivo heart model. It is noteworthy that peptide analogs without dimethyltyrosine did not inhibit mitochondrial ROS generation or swelling and failed to prevent myocardial stunning. These results clearly demonstrate that overproduction of ROS underlies the cellular toxicity of tBHP and 3NP, and ROS mediate cytochrome c release via MPT. These IMM-targeted antioxidants may be very beneficial in the treatment of aging and diseases associated with oxidative stress.

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  • SS-31 prevents Ca2+ induced cytochrome c release and inhibits 3-NP-induced activation of the MPT pore and mitochondrial depolarization in isolated mitochondria.

    “SS-31 also prevents Ca2+ induced cytochrome c release and inhibits 3-NP-induced activation of the MPT pore and mitochondrial depolarization in isolated mitochondria178.”

    From Mitochondrial Approaches for Neuroprotection (2008) · cites this paper as [178]

  • Peptides containing tyrosine residues have been found effectively to scavenge oxygen radicals and peroxynitrite and to inhibit lipid peroxidation.

    “Peptides containing tyrosine residues have been found effectively to scavenge oxygen radicals and peroxynitrite and to inhibit lipid peroxidation (304, 349).”

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  1. Matthews, R. T., Yang, L., Browne, S., Baik, M., and Beal, M. F. (1998) Proc. Natl. Acad. Sci. U. S. A. 95, 8892-8897
  2. Ott, M., Robertson, J. D., Gogvadze, V., Zhivotovsky, B., and Orrenius, S. (2002) Proc. Natl. Acad. Sci. U. S. A. 99, 1259 -1263
  3. Jurgensmeier, J. M., Xie, Z., Deveraux, Q., Ellerby, L., Bredesen, D., and Reed, J. C. (1998) Proc. Natl. Acad. Sci. U. S. A. 95, 4997-5002
  4. Gouras, G. K., Xu, H., Gross, R. S., Greenfield, J. P., Hai, B., Wang, R., and Greengard, P. (2000) Proc. Natl. Acad. Sci. U. S. A. 97, 1202-1205

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Authors
Zhao, K., Zhao, G.-M., Wu, D., Soong, Y., Birk, A. V., Schiller, P. W., & Szeto, H. H.
Affiliations
  • Cornell University (US)
  • Montreal Clinical Research Institute (CA)
Corresponding author
Szeto, Hazel H.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2004-08
Volume
279
Issue
33
Pages
34682-34690
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2055456981
Cited by
782
References
57
Citations by year
2026: 18 · 2025: 25 · 2024: 38 · 2023: 46 · 2022: 45 · 2021: 50 · 2020: 43 · 2019: 39 · 2018: 50 · 2017: 32 · 2016: 47 · 2015: 49 · 2014: 41 · 2013: 43 · 2012: 43
FWCI
7.34
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • Memorial Sloan-Kettering Cancer Center
  • National Institutes of Health
  • National Institute on Drug Abuse (DA08924, K01DA018268, P01DA008924)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cardiac Ischemia and Reperfusion
Keywords
inner mitochondrial membrane, mitochondrial permeability transition, reactive oxygen species, mitochondrial swelling, oxidative cell death, cytochrome c release, ischemia-reperfusion injury, myocardial stunning, tert-butyl hydroperoxide, 3-nitropropionic acid, mitochondrial reactive oxygen species, apoptosis, oxidative stress
MeSH terms
Animals, Antioxidants, Calcium, Cardiolipins, Cell Survival, Humans, Hydrogen Peroxide, Intracellular Membranes, Liver, Male, Mitochondria, Mitochondria, Liver, Nitro Compounds, Oxygen, Oxygen Consumption, Peptides, Propionates, Time Factors, Tyrosine, Reperfusion, Reperfusion Injury, Cell Death, Reactive Oxygen Species, Oxidative Stress, Caco-2 Cells, tert-Butylhydroperoxide, Amino Acid Motifs, Cytochromes c, Mice

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