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Mitochondrial membrane permeabilization in cell death.

Guido Kroemer1, Lorenzo Galluzzi, Catherine Brenner

  • 1Institut Gustave Roussy, Institut National de la Santé et de la Recherche Médicale Unit "Apoptosis, Cancer and Immunity," Université de Paris-Sud XI, Villejuif, France.

Physiological Reviews
|January 24, 2007
PubMed
Summary
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Mitochondrial membrane permeabilization (MMP) is the critical event determining cell fate, integrating signals to control cell death. Targeting MMP offers therapeutic strategies for diseases and cancer.

Area of Science:

  • Cell Biology
  • Biochemistry
  • Pathology

Background:

  • Mitochondria play a central role in regulating cell death.
  • Mitochondrial membrane permeabilization (MMP) is a key event in various cell death pathways.
  • Diverse cellular signals converge on mitochondria to influence cell fate.

Purpose of the Study:

  • To elucidate the role of mitochondria as a central integrator of cell death signals.
  • To highlight mitochondrial membrane permeabilization (MMP) as the decisive event in cell death.
  • To discuss the therapeutic potential of targeting MMP.

Main Methods:

  • Review of existing literature on cell death mechanisms.
  • Analysis of signaling pathways involving the Bcl-2 family and the mitochondrial permeability transition pore complex.

Related Experiment Videos

  • Integration of knowledge on metabolic, redox, and signaling inputs to mitochondria.

    • Main Results:

    • Mitochondria integrate numerous proapoptotic signals, with MMP being the critical determinant of cell survival or death.
    • MMP leads to the release of factors that execute cell death and cessation of mitochondrial functions.
    • MMP is a common critical event in pathological cell death and a target for therapeutic intervention.

    Conclusions:

    • Mitochondria are central regulators of cell death, with MMP as the decisive step.
    • Inhibiting MMP can prevent pathological cell death, while inducing MMP is a strategy for cancer therapy.
    • Understanding MMP mechanisms provides avenues for novel therapeutic strategies.