Mitotic trafficking of silicon microparticles.

Nanoscale
Rita E SerdaM Ferrari

Abstract

Multistage carriers were recently introduced by our laboratory, with the concurrent objectives of co-localized delivery of multiple therapeutic agents, the "theranostic" integration of bioactive moieties with imaging contrast, and the selective, potentially personalized bypassing of the multiplicity of biological barriers that adversely impact biodistribution of vascularly injected particulates. Mesoporous ("nanoporous") silicon microparticles were selected as primary carriers in multi-stage devices, with targets including vascular endothelia at pathological lesions. The objective of this study was to evaluate biocompatibility of mesoporous silicon microparticles with endothelial cells using in vitro assays with an emphasis on microparticle compatibility with mitotic events. We observed that vascular endothelial cells, following internalization of silicon microparticles, maintain cellular integrity, as demonstrated by cellular morphology, viability and intact mitotic trafficking of vesicles bearing silicon microparticles. The presence of gold or iron oxide nanoparticles within the porous matrix did not alter the cellular uptake of particles or the viability of endothelial cells subsequent to engulfment of microparticles. Endoth...Continue Reading

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