Mitochondria and cell death signalling.
Ella Hall-Younger1, Stephen Wg Tait1
1Cancer Research UK Scotland Institute, UK; School of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Glasgow, G61 1BD, UK.
Current Opinion in Cell Biology
|April 11, 2025
Summary
Mitochondria play a key role in cell death. Signals from nonlethal mitochondrial outer membrane permeabilisation (MOMP) trigger inflammation and impact immunity, genome stability, and senescence.
Area of Science:
- Cell Biology
- Immunology
- Molecular Biology
Background:
- Mitochondria are vital organelles regulating cellular life and death.
- Mitochondrial outer membrane permeabilisation (MOMP) is a key event in apoptosis.
- Nonlethal apoptotic stress involving minority MOMP has broad biological implications.
Purpose of the Study:
- To explore how mitochondria signal inflammation upon MOMP.
- To discuss targeting mitochondrial inflammation for cancer immunotherapy.
- To highlight mitochondria's role in pyroptosis and ferroptosis.
Main Methods:
- Review of recent studies on MOMP and mitochondrial signaling.
- Analysis of mechanisms linking mitochondrial damage to inflammatory pathways.
- Exploration of therapeutic strategies targeting mitochondrial inflammation.
Main Results:
- Mitochondrial signaling following MOMP can initiate inflammatory responses.
- Targeting mitochondrial inflammation presents a potential strategy to enhance anti-tumor immunity.
- Mitochondria are implicated in diverse cell death modalities beyond apoptosis.
Conclusions:
- Mitochondrial signals under nonlethal apoptotic stress have extensive biological functions.
- Understanding mitochondrial roles in cell death and inflammation is crucial for therapeutic development.
- Mitochondria are central regulators of cellular fate and inflammatory processes.
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