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The role of the lateral dimension of graphene oxide in the regulation of cellular responses

Paper ID Volume ID Publish Year Pages File Format Full-Text
7289 544 2012 9 PDF Available
Title
The role of the lateral dimension of graphene oxide in the regulation of cellular responses
Abstract

The nanomaterial graphene oxide (GO) has attracted explosive interests in various areas. However, its performance in biological environments is still largely unknown, particularly with regard to cellular response to GO. Here we separated the GO sheets in different size and systematically investigated size effect of the GO in response to different types of cells. In terms of abilities to internalize GO, enormous discrepancies were observed in the six cell types, with only two phagocytes were found to be capable of internalizing GO. The 2 μm and 350 nm GO greatly differed in lateral dimensions, but equally contributed to the uptake amount in macrophages. Similar amounts of antibody opsonization and active Fcγ receptor-mediated phagocytosis were demonstrated the cause of this behavior. In comparison with the nanosized GO, the GO in micro-size showed divergent intracellular locations and induced much stronger inflammation responses. Present study provided insight into selective internalization, size-independent uptake, and several other biological behaviors undergone by GO. These findings might help build necessary knowledge for potential incorporation of the unique two-dimensional nanomaterial as a biomedical tool, and for avoiding potential hazards.

Keywords
Carbon; Cytokine; Cytotoxicity; Drug delivery; Inflammation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 33, Issue 16, June 2012, Pages 4013–4021
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us