Related Experiment Video
Updated: Jun 5, 2026

Isolation and Functional Analysis of Mitochondria from Cultured Cells and Mouse Tissue
Published on: March 23, 2015
Pathophysiological implications of mithochondrial cell death control
1Institut Gustave Roussy, INSERM, U848, Université Paris Sud, Villejuif, France.
Abstract:
Mitochondria are not only the cell's powerhouse; they also constitute the weapon store for cellular suicide. In response to multiple distinct insults, mitochondrial membranes are permeabilized in a highly regulated fashion. Mitochondrial outer membrane permeabilization results in the cytosolic release of several factors that are normally secluded within the mitochondrial intermembrane space. Once in the cytosol, these factors act as (or activate) catabolic hydrolases that digest of the cell's content, thus causing cell death and facilitating the subsequent corpse removal. Multiple lethal signal transduction molecules, toxins and experimental anticancer agents can induce mitochondrial membrane permeabilization, a property that is taken advantage for tumour therapy. Conversely, some pharmacological agents have been designed to inhibit mitochondrial membrane permeabilization and can be used for the experimental avoidance of unwarranted cell death, for instance in stroke or myocardial infarction. Altogether, it appears that mitochondrial cell death control has wide physiological, pathological and pharmacological implications.
Insights
Mitochondria control cell death by releasing factors that trigger cell digestion. This process is targeted in cancer therapy and can be inhibited to prevent cell death in conditions like stroke.
Area of Science:
- Cell Biology
- Biochemistry
- Pharmacology
Background:
- Mitochondria are central to cellular energy production.
- Mitochondria also play a critical role in regulated cell death pathways.
- Mitochondrial outer membrane permeabilization (MOMP) is a key event in apoptosis.
Purpose of the Study:
- To explore the dual role of mitochondria in cell life and death.
- To investigate the mechanisms and implications of mitochondrial membrane permeabilization.
- To highlight the therapeutic potential of targeting mitochondrial cell death.
Main Methods:
- Review of existing literature on mitochondrial function and cell death.
- Analysis of signaling pathways involved in mitochondrial permeabilization.
- Discussion of pharmacological agents affecting mitochondrial integrity.
Main Results:
- Mitochondrial outer membrane permeabilization releases factors that induce cellular digestion.
- This regulated cell death pathway is activated by various stimuli, including toxins and anticancer agents.
- Inhibition of MOMP can prevent cell death in conditions like stroke and myocardial infarction.
Conclusions:
- Mitochondrial membrane permeabilization is a critical, highly regulated process.
- Targeting mitochondrial cell death offers therapeutic strategies for cancer and ischemic diseases.
- Mitochondrial control of cell death has broad physiological and pathological significance.
More Related Videos
Related Concept Videos
Mitochondria
Mitochondrial Membranes
Electron Transport Chain: Complex I and II
ROS generation is regulated and maintained at moderate levels necessary...
Overview of Cell Death
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the 20th century...
Cellular Injury I: Introduction
Cellular Injury IV: Necrosis

