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Analyzing mitochondrial changes during apoptosis.

Roberta A Gottlieb1, David J Granville

  • 1Department of Molecular and Experimental Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA. robbieg@scripps.edu

Methods (San Diego, Calif.)
|June 11, 2002
PubMed
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This study reviews methods to detect mitochondrial changes during programmed cell death. Key techniques include fluorescence microscopy and flow cytometry to monitor cytochrome c release and mitochondrial membrane potential loss.

Area of Science:

  • Cell Biology
  • Biochemistry
  • Molecular Biology

Background:

  • Mitochondria are crucial in initiating programmed cell death (apoptosis).
  • The release of cytochrome c from mitochondria is a key event in apoptosis.
  • Assessing mitochondrial alterations is vital for understanding cell death pathways.

Purpose of the Study:

  • To summarize widely used methods for evaluating mitochondrial changes during apoptosis.
  • To provide an overview of techniques for detecting cytochrome c release and mitochondrial membrane potential loss.

Main Methods:

  • Fluorescence microscopy for visualizing cytochrome c translocation and mitochondrial membrane potential.
  • Flow cytometry for measuring mitochondrial membrane potential.
  • Immunoblotting following subcellular fractionation or digitonin permeabilization for quantifying cytochrome c.

Related Experiment Videos

  • Studies using isolated mitochondria to investigate cytochrome c release mechanisms.

    • Main Results:

    • Various techniques allow for the assessment of mitochondrial integrity and function during apoptosis.
    • Specific methods enable the detection and quantification of key apoptotic factors like cytochrome c.
    • The loss of mitochondrial membrane potential is a measurable hallmark of apoptosis.

    Conclusions:

    • Multiple experimental approaches are available to study mitochondrial involvement in apoptosis.
    • These methods facilitate the detailed investigation of molecular events leading to programmed cell death.
    • Understanding these mitochondrial alterations is essential for research in cell death and disease.