Related Experiment Videos
The 'harmless' release of cytochrome c
O Von Ahsen1, N J Waterhouse, T Kuwana
1Division of Cellular Immunology, La Jolla Institute for Allergy and Immunology, 10355 Science Center Drive, San Diego, California, CA 92121, USA.
Cell Death and Differentiation
|February 15, 2001
Summary
Cytochrome c release from mitochondria is key to apoptosis. This review explores how Bcl-2 proteins mediate this release via outer membrane permeabilization, preserving mitochondrial function.
Area of Science:
- Cell Biology
- Biochemistry
- Molecular Biology
Background:
- Cytochrome c release from mitochondria is a critical event in apoptosis.
- The precise mechanism of cytochrome c release has been a long-standing question in cell death research.
Purpose of the Study:
- To review the evidence implicating Bcl-2 family proteins in the mechanism of cytochrome c release.
- To discuss the implications of cytochrome c release for cellular recovery and apoptosis regulation.
Main Methods:
- Literature review focusing on studies investigating cytochrome c release.
- Analysis of experimental data on mitochondrial membrane permeability and function.
Main Results:
- Evidence suggests Bcl-2 family proteins regulate cytochrome c release.
- This release involves selective outer mitochondrial membrane permeabilization.
- Inner mitochondrial membrane integrity and function are largely preserved.
Conclusions:
- Cytochrome c release is mediated by Bcl-2 proteins through a mechanism that maintains mitochondrial viability.
- This suggests that apoptosis commitment may be regulated downstream of cytochrome c release.