PMID- 26413621 OWN - NLM STAT- MEDLINE DCOM- 20151130 LR - 20190715 IS - 1533-4880 (Print) IS - 1533-4880 (Linking) VI - 15 IP - 3 DP - 2015 Mar TI - Inhibition of Viability of the Respiratory Epithelial Cells Using Functionalized Graphene Oxide. PG - 2060-6 AB - The viability of A549 cells, a human lung carcinoma epithelial cell line, was evaluated after exposure to graphene oxide (GO) and its derivatives (dodecylamine GO (DA-GO), reduced GO (rGO), and sodium dodecyl sulfate rGO (SDS-rGO)). A decrease in the relative amounts of C-OH bonds and an increase in the number of C-C and C-N bonds in the C 1s spectra indicated that the reduction of GO to rGO and the surface functionalization of GO has taken place. The appearance of amine stretching bands, out-of-plane C-H stretching vibrations, and S = O stretching bands in the infrared spectra indicated the formation of DA-GO, rGO, and SDS-rGO, respectively. Low concentrations (3-25 microg/mL) of GO, rGO, and SDS-rGO were found to be mildly toxic, whereas DA-GO exhibited severe dose-dependent toxicity over the same concentration range. High concen- trations (50-400 microg/mL) of GO and all its derivatives resulted in severe toxicity to the A549 cells. It is believed that surface functionality strongly affects the viability of A549 cells. FAU - Park, Chang Seok AU - Park CS FAU - Choi, Kyoung Soon AU - Choi KS FAU - Shin, Jong Wook AU - Shin JW FAU - Kim, Soo Young AU - Kim SY LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Nanosci Nanotechnol JT - Journal of nanoscience and nanotechnology JID - 101088195 RN - 0 (Amines) RN - 0 (Oxides) RN - 368GB5141J (Sodium Dodecyl Sulfate) RN - 7782-42-5 (Graphite) RN - YWY9OD6A2K (dodecylamine) SB - IM MH - Amines/chemistry MH - Cell Line, Tumor MH - Cell Survival/drug effects MH - Epithelial Cells/*cytology/*drug effects MH - Graphite/*adverse effects/*chemistry MH - Humans MH - Lung/*pathology MH - Models, Molecular MH - Molecular Conformation MH - Oxidation-Reduction MH - Oxides/*chemistry MH - Sodium Dodecyl Sulfate/chemistry MH - Surface Properties EDAT- 2015/09/29 06:00 MHDA- 2015/12/15 06:00 CRDT- 2015/09/29 06:00 PHST- 2015/09/29 06:00 [entrez] PHST- 2015/09/29 06:00 [pubmed] PHST- 2015/12/15 06:00 [medline] AID - 10.1166/jnn.2015.9539 [doi] PST - ppublish SO - J Nanosci Nanotechnol. 2015 Mar;15(3):2060-6. doi: 10.1166/jnn.2015.9539.