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Enzymatic assays for probing mitochondrial apoptosis
Zhenyu Wang1, Claire Nicolas, Rodolphe Fischmeister
1INSERM UMR-S 769, LabEx LERMIT, 5 rue Baptiste Clément, Châtenay-Malabry, France.
Methods in Molecular Biology (Clifton, N.J.)
|January 31, 2015
Summary
Isolated mitochondria are crucial for studying cell death pathways and energy production. Assays evaluating mitochondrial membrane permeabilization (MMP) offer valuable insights for drug discovery and diagnostics.
Area of Science:
- Cell Biology
- Biochemistry
- Pharmacology
Background:
- Isolated mitochondria serve as key tools for analyzing mitochondrial function.
- Mitochondria play a critical role in cellular energy metabolism and apoptosis.
- Mitochondrial membrane permeabilization (MMP) is a critical event in cell death.
Purpose of the Study:
- To highlight the utility of isolated mitochondria in research.
- To discuss the role of mitochondria in cell life and death decisions.
- To present methods for evaluating MMP and its consequences.
Main Methods:
- Isolation of mitochondria from various tissue origins.
- In vitro assays to measure mitochondrial parameters.
- Evaluation of mitochondrial transmembrane potential (ΔΨm), swelling, respiration, ATP production, and cytochrome c release.
Main Results:
- Mitochondria actively participate in energy production and apoptosis.
- MMP leads to loss of ΔΨm, swelling, respiratory arrest, and cytochrome c release.
- Miniaturized assays allow for the assessment of these mitochondrial events.
Conclusions:
- Isolated mitochondria are invaluable for studying mitochondrial function and apoptosis.
- Assays evaluating MMP have broad applications in pharmacology, toxicology, and diagnostics.
- These methods are crucial for drug discovery and understanding disease mechanisms.
