Hepatic Cellular Distribution of Silica Nanoparticles by Surface Energy Modification

International Journal of Molecular Sciences
A-Rang LeeJin-Kyu Park

Abstract

The cellular distribution of silica nanoparticles (NPs) in the liver is not well understood. Targeting specific cells is one of the most important issues in NP-based drug delivery to improve delivery efficacy. In this context, the present study analyzed the relative cellular distribution pattern of silica NPs in the liver, and the effect of surface energy modification on NPs. Hydrophobic NP surface modification enhanced NP delivery to the liver and liver sinusoid fFendothelial cells (LSECs). Conversely, hydrophilic NP surface modification was commensurate with targeting hepatic stellate cells (HSCs) rather than other cell types. There was no notable difference in NP delivery to Kupffer cells or hepatocytes, regardless of hydrophilic or hydrophobic NP surface modification, suggesting that both the targeting of hepatocytes and evasion of phagocytosis by Kupffer cells are not associated with surface energy modification of silica NPs. This study provides useful information to target specific cell types using silica NPs, as well as to understand the relationship between NP surface energy and the NP distribution pattern in the liver, thereby helping to establish strategies for cell targeting using various NPs.

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Citations

Sep 3, 2020·Cells·Maximiliano L CacicedoMatthias Bros

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Methods Mentioned

BETA
fluorescence microscopy
dynamic light scattering
fluorescence imaging

Software Mentioned

GraphPad InStat
ToupView
GraphPad

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