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Updated: Aug 5, 2026

Activation of Apoptosis by Cytoplasmic Microinjection of Cytochrome c
Published on: June 29, 2011
[Molecular control of apoptosis]
1Hôpital Universitaire de Genève, Belle-Idée, 2, chemin du Petit Bel-Air, 1225 Chêne-Bourg, Geneva, Switzerland. Michel.Dubois-Dauphin.medecine.unige.ch
Abstract:
Apoptotic cell death is a natural event necessary to shaping the developing nervous system and is a feature of neurodegenerative disease pathology. Subtle interactions between pro- and anti-apoptotic molecules are controlled by environmental factors such as trophic factors. The mitochondrion is a major component regulating these interactions. At the time of apoptosis, proteases, called caspases, are activated to ensure cell breakdown. In living cells, intracellular components ensure the inhibition of caspases. As such, caspases are therapeutic targets to induce or to prevent apoptosis.
Insights
Apoptotic cell death, crucial for development and disease, involves mitochondria and caspases. Targeting caspases offers therapeutic potential for controlling cell death.
Area of Science:
- Neurobiology
- Cellular Biology
- Biochemistry
Context:
- Apoptotic cell death is vital for nervous system development and neurodegenerative disease.
- Environmental factors like trophic factors modulate apoptotic pathways.
- Mitochondria play a central role in regulating apoptosis.
Purpose:
- To explore the molecular mechanisms of apoptosis, focusing on the role of mitochondria and caspases.
- To understand how environmental factors influence the balance of cell death.
- To identify caspases as potential therapeutic targets.
Summary:
- Apoptosis involves a complex interplay of pro- and anti-apoptotic molecules.
- Mitochondria are key regulators of these interactions.
- Caspases, proteases activated during apoptosis, are normally inhibited in living cells.
Impact:
- Understanding these pathways can lead to novel therapeutic strategies for neurodegenerative diseases.
- Targeting caspase activation or inhibition could offer new treatments.
- This research highlights the mitochondrion's critical role in cell fate decisions.
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