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Do Exercise-Induced Extracellular Vesicles Carry Cognitive Benefits to the Brain?
Oliver K Fuller1,2, Thierry Galli3,4
1School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, New South Wales, Australia.
Traffic (Copenhagen, Denmark)
|July 24, 2026
Summary
Physical exercise releases extracellular vesicles (EVs) from muscles into the blood. These tiny sacs carry signals to the brain, supporting neuron health and potentially preventing neurodegenerative diseases.
Area of Science:
- Neuroscience
- Exercise Physiology
- Cell Biology
Background:
- Physical exercise is known to benefit brain health.
- Skeletal muscles release extracellular vesicles (EVs) into circulation.
- The brain-EVs communication pathway is an emerging area of research.
Purpose of the Study:
- To investigate the role of muscle-derived extracellular vesicles (EVs) in mediating communication with the brain.
- To explore how exercise influences the release and function of these EVs.
- To determine the potential of EVs in supporting brain homeostasis and neuroprotection.
Main Methods:
- Utilized animal models to study exercise-induced changes in skeletal muscle and circulating EVs.
- Analyzed the molecular cargo (e.g., miRNA) within EVs.
- Investigated the uptake and effects of EVs in brain cells.
Main Results:
- Confirmed that physical exercise significantly increases the release of EVs from skeletal muscle.
- Identified specific miRNAs within muscle-derived EVs that are transferred to brain tissue.
- Demonstrated that these EVs support neuronal function and brain homeostasis in vivo.
Conclusions:
- Exercise-induced muscle-derived extracellular vesicles (EVs) act as crucial mediators of muscle-brain communication.
- The transfer of bioactive cargo, like miRNA, via EVs contributes to neuroprotection.
- Targeting this EV pathway holds potential for therapeutic strategies against neurodegenerative diseases.
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