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10:39
Purification of Mitochondria from Yeast Cells
Published on: August 24, 2009
Mitochondrial death pathways in yeast and mammalian cells
Wen-Chih Cheng1, Kelly M Leach, J Marie Hardwick
1W Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, MD 21205, USA.
Biochimica Et Biophysica Acta
|May 15, 2008
Summary
Mitochondrial fission proteins in mammals mediate programmed cell death. Conserved in other species, their exact role in cell death mechanisms remains unclear, with debate on whether fission itself is the cause.
Area of Science:
- Cell Biology
- Evolutionary Biology
Background:
- Mitochondria are key in mammalian programmed cell death, regulated by Bcl-2 proteins.
- The role of mitochondria in cell death in non-mammalian species is debated.
Purpose of the Study:
- To explore the conserved role of mitochondrial fission/division proteins in programmed cell death across species.
- To investigate the molecular mechanisms linking these proteins to cell death pathways.
Main Methods:
- Review of existing evidence on mitochondrial fission factors and cell death.
- Comparative analysis of conserved cell death regulators in mammals, flies, worms, and yeast.
Main Results:
- Mammalian mitochondrial fission proteins show pro-death capacity, potentially interacting with Bcl-2 family proteins.
- Homologues of these factors are conserved in diverse species, suggesting a shared role in cell death.
Conclusions:
- The function of mitochondrial fission proteins in cell death is conserved but mechanistically undefined across species.
- Evidence suggests fission and cell death functions may be separable, impacting understanding of programmed cell death origins.
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