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Updated: Jun 17, 2026
08:15
Understanding the Changes in Mitochondrial Morphology through Dynamic and Three-dimensional Fluorescence Micrographs
Published on: August 15, 2025
Organellar vs cellular control of mitochondrial dynamics
Brigham B Hyde1, Gilad Twig, Orian S Shirihai
1Department of Medicine, Boston University Medical Center, Boston, MA 02118, USA.
Seminars in Cell & Developmental Biology
|January 19, 2010
Summary
Mitochondrial dynamics, involving fusion and fission, are vital for cellular functions and energy production. This review explores the local and global signals regulating these crucial mitochondrial processes.
Area of Science:
- Cell Biology
- Mitochondrial Biology
Background:
- Mitochondrial dynamics, encompassing fusion and fission, are essential for maintaining mitochondrial health and function.
- These processes facilitate the exchange of contents between mitochondria, impacting cellular bioenergetics and various cellular pathways.
- Dysregulation of mitochondrial dynamics is implicated in numerous diseases.
Purpose of the Study:
- To review the local and global signals that regulate mitochondrial fusion and fission.
- To elucidate how these signals impact mitochondrial bioenergetics and overall mitochondrial population status.
- To provide a comprehensive understanding of the control mechanisms governing mitochondrial dynamics.
Main Methods:
- Literature review of studies on mitochondrial dynamics.
- Analysis of signaling pathways involved in mitochondrial fusion and fission.
- Integration of information on local and global regulatory mechanisms.
Main Results:
- Mitochondrial dynamics are regulated by both intrinsic (local) and extrinsic (global) factors.
- Local regulation involves the mitochondrion's microenvironment, affecting its ability to fuse, divide, or move.
- Global regulation involves nuclear-encoded factors and cellular signaling systems that modulate mitochondrial protein activity.
Conclusions:
- Both local and global signals are critical and interactive in controlling mitochondrial dynamics.
- Understanding these regulatory signals is key to comprehending mitochondrial population status.
- This knowledge is fundamental for targeting mitochondrial dysfunction in disease.
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