Cited by 765Cell death mechanisms and regulationMitochondrial Function and PathologyRedox biology and oxidative stress

Superoxide in Apoptosis

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Cai, Jiyang, Jones, Dean P.·1998·Journal of Biological Chemistry

Abstract

Activation of apoptosis is associated with generation of reactive oxygen species. The present research shows that superoxide is produced by mitochondria isolated from apoptotic cells due to a switch from the normal 4-electron reduction of O2 to a 1-electron reduction when cytochrome c is released from mitochondria. Bcl-2, a protein that protects against apoptosis and blocks cytochrome c release, prevents superoxide production when it is overexpressed. The switch in electron transfer provides a mechanism for redox signaling that is concomitant with cytochrome c-dependent activation of caspases. The block of cytochrome c release provides a mechanism for the apparent antioxidant function of Bcl-2.

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  1. Johnson, T. M., Yu, Z. X., Ferrans, V. J., Lowenstein, R. A., and Finkel, T. (1996) Proc. Natl. Acad. Sci. U. S. A. 93, 11848 -11852
  2. Mayer, M., and Noble, M. (1994) Proc. Natl. Acad. Sci. U. S. A. 91, 7496 -7500
  3. Chu, Z. L., McKinsey, T. A., Liu, L., Gentry, J. J., Malim, M. H., and Ballard, D. W. (1997) Proc. Natl. Acad. Sci. U. S. A. 94, 10057-10062
  4. Kharbanda, S., Pandey, P., Schefield, L., Israels, S., Roncinske, R., Yoshida, K., Bharti, A., Yuan, Z-M., Saxena, S., Weichselbaum, R., Nalin, C., and Kufe, D. (1997) Proc. Natl. Acad. Sci. U. S. A. 94, 6932-6942
  5. Staal, F. J., Roederer, M., Herzenberg, L. A., and Herzenberg, L. A. (1990) Proc. Natl. Acad. Sci. U. S. A. 87, 9943-9947

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Authors
Cai, J., & Jones, D. P.
Affiliations
Emory University (US)
Corresponding author
Jones, Dean P.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1998-05
Volume
273
Issue
19
Pages
11401-11404
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1980969730
Cited by
765
References
45
Citations by year
2026: 3 · 2025: 4 · 2024: 6 · 2023: 5 · 2022: 12 · 2021: 16 · 2020: 9 · 2019: 12 · 2018: 13 · 2017: 14 · 2016: 18 · 2015: 16 · 2014: 17 · 2013: 20 · 2012: 29
FWCI
19.81
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • University of Minnesota
  • National Institutes of Health
  • National Eye Institute (EY07892)
  • National Institute of Environmental Health Sciences (ES09047, R01ES009047)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • 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
Keywords
superoxide, apoptosis, reactive oxygen species, cytochrome c release, mitochondria, Bcl-2, redox signaling, caspase activation, electron transfer, antioxidant function
MeSH terms
Cytochrome c Group, Glutathione, Humans, Mitochondria, Oxidation-Reduction, Superoxides, Time Factors, Apoptosis, HL-60 Cells, Proto-Oncogene Proteins c-bcl-2, Staurosporine

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