NDLI: Cytotoxicity and genotoxicity of multi-walled carbon nanotubes with human ocular cells

Content Provider	Springer Nature Link
Author	Yan, Lu Li, GuoXing Zhang, Shu Sun, Fei Huang, XiaoJie Zhang, Qian Dai, LiMing Lu, Fan Liu, Yong
Copyright Year	2013
Abstract	Cytotoxicity and genotoxicity of plasma-modified multi-walled carbon nanotubes (MWCNTs), including hydroxyl-MWCNTs (MWCNT-OH), carboxyl-MWCNTs (MWCNT-COOH) and pristine MWCNTs, with human ocular cells (e.g. retinal pigment epithelium (RPE) cells) have been studied in this work. The addition of MWCNT-based materials caused few change in cell morphology while the presence of MWCNTs was observed inside the cells using transmission electron microscopy (TEM), suggesting possibility of MWCNTs passing through the cell membranes without damaging cells. Cell viability measurements suggested that MWCNT-COOH exhibited better biocompatibility than other MWCNT materials studied in this work. Lactate Dehydrogenase (LDH) release level was found to be less than 30% with all types of MWCNT-based materials. Reactive Oxygen Species (ROS) generation was visible but not severe with addition of nanotubes. A smaller oxidative stress level was obtained from MWCNT-COOH. Cell apoptosis was found to be less than 1.5% with addition of MWCNT-based materials. Particularly MWCNTs were found to be swallowed by cells and released by cells after 72 h without damaging cells, which may be considered as a potential vector for ocular genetic diseases. Plasma modification of MWCNTs particularly with -COOH was found to be an efficient way to improve ocular biocompatibility of MWCNTs, suggesting a fast and useful way to modify MWCNTs for applications in areas such as biology and biomedicine.
Starting Page	2347
Ending Page	2352
Page Count	6
File Format	PDF
ISSN	10016538
Journal	Chinese Science Bulletin
Volume Number	58
Issue Number	19
e-ISSN	18619541
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-04-27
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	multi-walled carbon nanotubes ocular biocompatibility retinal pigment epithelium (RPE) cells cytotoxicity genotoxicity Science Life Sciences Physics Chemistry/Food Science Earth Sciences Engineering
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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