Abstract
Observations of apoptosis in virtual anaerobiosis have raised doubts on the significance of reactive oxygen species in the cascade of events of programmed cell death. This work presents evidence that cells and mitochondrial preparations produce similar levels of hydrogen peroxide under either aerobic or virtually anaerobic conditions. These levels are relevant to the increased production of radicals induced by a ceramide analog that promotes apoptosis. This ceramide acts at center o of mitochondrial complex III.
Keywords
MeSH Terms
Affiliated Institutions
Related Publications
Direct Effect of Ceramide on the Mitochondrial Electron Transport Chain Leads to Generation of Reactive Oxygen Species
Ceramide is a sphingolipid that is generated in the signaling of inflammatory cytokines such as tumor necrosis factor (TNF), which exerts many functional roles depending on the ...
Programmed cell death and Bcl-2 protection in very low oxygen
Programmed cell death (PCD) is a fundamental feature of animal cells, but the mechanism remains unknown. Similarly, the Bcl-2 oncoprotein can suppress PCD in a variety of cell t...
Superoxide dismutases: Dual roles in controlling ROS damage and regulating ROS signaling
Superoxide dismutases (SODs) are universal enzymes of organisms that live in the presence of oxygen. They catalyze the conversion of superoxide into oxygen and hydrogen peroxide...
Tumor necrosis factor α induces a caspase-independent death pathway in human neutrophils
Tumor necrosis factor α (TNF-α) is a cytokine with multiple roles in the immune system, including the induction and potentiation of cellular functions in neutrophils (PMNs). TNF...
The Permeability Transition Pore Complex: A Target for Apoptosis Regulation by Caspases and Bcl-2–related Proteins
Early in programmed cell death (apoptosis), mitochondrial membrane permeability increases. This is at least in part due to opening of the permeability transition (PT) pore, a mu...
Publication Info
- Year
- 1998
- Type
- article
- Volume
- 430
- Issue
- 3
- Pages
- 338-342
- Citations
- 152
- Access
- Closed
External Links
Social Impact
Social media, news, blog, policy document mentions
Citation Metrics
Cite This
Identifiers
- DOI
- 10.1016/s0014-5793(98)00688-7
- PMID
- 9688567