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Cited by 326

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Nanoparticle Geometry and Surface Orientation Influence Mode of Cellular Uptake

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Herd, Heather, Daum, Nicole, Jones, Arwyn T., Huwer, Hanno, Ghandehari, Hamidreza, Lehr, Claus-Michael·2013·ACS Nano
DOI 10.1021/nn304439f
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Abstract

In order to engineer safer nanomaterials, there is a need to understand, systematically evaluate, and develop constructs with appropriate cellular uptake and intracellular fates. The overall goal of this project is to determine the uptake patterns of silica nanoparticle geometries in model cells, in order to aid in the identification of the role of geometry on cellular uptake and transport. In our experiments we observed a significant difference in the viability of two phenotypes of primary macrophages; immortalized macrophages exhibited similar patterns. However, both primary and immortalized epithelial cells did not exhibit toxicity profiles. Interestingly uptake of these geometries in all cell lines exhibited very different time-dependent patterns. A screening of a series of chemical inhibitors of endocytosis was performed to isolate the uptake mechanisms of the different particles. The results show that all geometries exhibit very different uptake profiles and that this may be due to the orientation of the nanoparticles when they interact with the cell surface. Additionally, evidence suggests that these uptake patterns initialize different downstream cellular pathways, dependent on cell type and phenotype.

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Citations

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Cited by

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Metadata

Authors
Herd, H., Daum, N., Jones, A. T., Huwer, H., Ghandehari, H., & Lehr, C.-M.
Venue
ACS Nano
Publisher
American Chemical Society (ACS)
Published
2013-02-22
Volume
7
Issue
3
Pages
1961-1973
ISSN
  • 1936-0851 (ISSN-L)
  • 1936-086X
DOI
10.1021/nn304439f
OpenAlex
W2011934424
Cited by
326
References
4
FWCI
10.42
Type
journal article
Language
en
Open access
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