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Updated: Mar 15, 2026
Murine Neural Plate Targeting by In Utero Nano-Injection NEPTUNE at Embryonic Day 7.5
Published on: February 14, 2022
Active diffusion of nanoparticles of maternal origin within the embryonic brain
Mikhail Yuryev1, Mónica Pa Ferreira2, Vimalkumar Balasubramanian2
1Neuroscience Center, University of Helsinki, FI-00014 Helsinki, Finland.
Aim:
To investigate porous silicon (PSi) nanoparticles (NPs) behavior in the embryonic brain.
Materials & Methods:
Fluorescently labeled PSi NPs were injected into the embryonic brains intraventricularly and to the mother intravenously (iv.). Brain histology from different time points up to 3 days was analyzed and live brains imaged with two-photon microscopy.
Results:
PSi NPs were able to penetrate 80% of the embryonic cortical depth. Particle motility was confirmed in real-time in vivo. PSi NPs were able to penetrate the embryonic cortex after either iv. maternal or intraventricular injection. No developmental of macromorphological changes or increased cell apoptosis was observed.
Conclusion:
PSi NPs penetrate deep in the brain tissues of embryos after intraventricular injection and after iv. injection to the mother.
