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Updated: Jun 20, 2026
09:39
Live Imaging of Cell Extrusion from the Epidermis of Developing Zebrafish
Published on: June 27, 2011
14.7K
Dynamic changes of extracellular vesicles during zebrafish organogenesis
Linda-Marie Mulzer1, Tim Felger2, Luis E Muñoz3,4
1Department of Pediatrics and Adolescent Medicine, Division of Neonatology and Pediatric, Intensive Care University Hospital Erlangen, Erlangen, Germany. linda-marie.mulzer@uk-erlangen.de.
Cell Communication and Signaling : CCS
|February 3, 2025
Summary
Zebrafish embryogenesis involves dynamic changes in extracellular vesicles (EVs), with increasing numbers and sizes observed during early development, suggesting a key role in organogenesis.
Area of Science:
- Developmental Biology
- Cell Biology
- Biochemistry
Background:
- Extracellular Vesicles (EVs) are vital for intercellular communication and cell differentiation.
- Zebrafish embryogenesis is a critical period for development, yet EV dynamics remain largely unexplored.
- Understanding EV roles in zebrafish development can provide insights into vertebrate embryogenesis.
Purpose of the Study:
- To investigate the changes in size and concentration of EVs during zebrafish embryogenesis.
- To characterize different types of EVs (small and large) and their temporal dynamics.
- To correlate EV characteristics with specific developmental stages in zebrafish.
Main Methods:
- Isolation and characterization of EVs from zebrafish larvae at 24, 48, 72, and 96 hours post-fertilization.
- Utilized flow cytometry, transmission electron microscopy (TEM), and nanoparticle tracking analysis (NTA).
- Western Blotting was employed for further sample validation.
Main Results:
- High purity of isolated EV samples confirmed by flow cytometry and TEM.
- Nanoparticle tracking analysis differentiated small EVs (sEVs) and large EVs (lEVs), indicating distinct EV types are utilized.
- Total EV concentration significantly increased up to 72 hours post-fertilization, with sEV size also increasing, peaking at 72 hours.
Conclusions:
- Zebrafish larvae exhibit significant changes in EV number and size during early embryogenesis, particularly up to 72 hours post-fertilization.
- The observed EV dynamics suggest a crucial role in organogenesis, preceding the main phases of maturation and growth.
- Increasing sEV size may reflect an enhanced capacity for cargo transport required during rapid organ development.
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