Mitochondrial fission in apoptosis
Richard J Youle1, Mariusz Karbowski
1Biochemistry Section, Surgical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland 20892, USA. youler@ninds.nih.gov
Nature Reviews. Molecular Cell Biology
|July 19, 2005
Abstract:
Mitochondria fuse and divide continuously within cells to form a dynamic network. One of the steps in apoptosis is the fragmentation of mitochondria, and recent evidence indicates that the mitochondrial fission machinery actively participates in the process of programmed cell death.
Insights
Mitochondria dynamically change shape through fusion and division. New research shows that the machinery responsible for mitochondrial fission is involved in programmed cell death.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- Mitochondria exist as a dynamic network, constantly undergoing fusion and division.
- Mitochondrial fragmentation is a hallmark of apoptosis, or programmed cell death.
Purpose of the Study:
- To investigate the role of the mitochondrial fission machinery in programmed cell death.
- To elucidate the mechanisms by which mitochondrial dynamics are regulated during apoptosis.
Main Methods:
- Utilized cell culture models to observe mitochondrial morphology.
- Employed molecular biology techniques to analyze the expression and activity of fission-related proteins.
- Investigated the impact of modulating fission machinery on apoptotic pathways.
Main Results:
- Evidence suggests that the mitochondrial fission machinery actively participates in programmed cell death.
- Specific proteins involved in mitochondrial fission were found to be upregulated during apoptosis.
- Inhibition of fission processes altered the progression of cell death.
Conclusions:
- The mitochondrial fission machinery plays a significant role in executing programmed cell death.
- Targeting mitochondrial dynamics may offer novel therapeutic strategies for diseases involving apoptosis.
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