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Updated: Jul 17, 2026
09:39
Live Imaging of Cell Extrusion from the Epidermis of Developing Zebrafish
Published on: June 27, 2011
Flow-guided carriers: an in vivo study in zebrafish embryos
Santiago Paramés-Estévez1, Ana B Dávila-Ibáñez2, Alberto Otero-Cacho3
1Grupo de Física No Lineal, Universidade de Santiago de Compostela, Spain. alberto.perez.munuzuri@usc.es.
Nanoscale
|July 15, 2026
Summary
Particle shape significantly impacts nanoparticle transport in blood vessels. Spherical nanoparticles access smaller vessels faster than cylindrical ones, informing nanocarrier design for improved drug delivery.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Vascular Biology
Background:
- Nanoparticle geometry is crucial for vascular transport, but in vivo effects are not fully understood.
- Early hydrodynamic transport dynamics are vital for nanocarrier delivery systems.
Purpose of the Study:
- To investigate the influence of nanoparticle shape on transport within the zebrafish embryo cardiovascular system.
- To quantify the spatiotemporal distribution of spherical versus cylindrical nanoparticles in vivo.
Main Methods:
- Injected fluorescently labeled spherical and cylindrical polymer nanoparticles into zebrafish embryos.
- Quantified nanoparticle distribution by measuring fluorescence intensity in blood vessels at 2, 5, and 10 minutes post-injection.
- Focused on early hydrodynamic transport before cellular uptake.
Main Results:
- Spherical nanoparticles showed a significantly faster increase in fluorescence intensity in small vessels compared to cylindrical ones.
- Demonstrated enhanced microvascular access for spherical nanoparticles.
- Resolved intravascular distribution dynamics within the first 15 minutes post-injection.
Conclusions:
- Nanoparticle shape dictates transport efficiency in confined vascular networks.
- Spherical nanoparticles exhibit a transport advantage in vivo.
- Findings support rational design of nanoparticle delivery systems based on shape.
