Endocytotic potential governs magnetic particle loading in dividing neural cells: studying modes of particle inheritance

Nanomedicine
Jacqueline A TickleDivya M Chari

Abstract

To achieve high and sustained magnetic particle loading in a proliferative and endocytotically active neural transplant population (astrocytes) through tailored magnetite content in polymeric iron oxide particles. MPs of varying magnetite content were applied to primary-derived rat cortical astrocytes ± static/oscillating magnetic fields to assess labeling efficiency and safety. Higher magnetite content particles display high but safe accumulation in astrocytes, with longer-term label retention versus lower/no magnetite content particles. Magnetic fields enhanced loading extent. Dynamic live cell imaging of dividing labeled astrocytes demonstrated that particle distribution into daughter cells is predominantly 'asymmetric'. These findings could inform protocols to achieve efficient MP loading into neural transplant cells, with significant implications for post-transplantation tracking/localization.

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Citations

Jun 5, 2019·Journal of Tissue Engineering and Regenerative Medicine·Jacqueline A Tickle, Divya M Chari

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Methods Mentioned

BETA
scanning electron microscopy
Fluorescence
flow cytometry

Software Mentioned

Prism
ImageJ
ZEN
Photoshop
Axiovision

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