title: An efficient analysis of nanomaterial cytotoxicity based on bioimpedance.
abstract: In the emerging nanotechnology field, there is an urgent need for the development of a significant and sensitive method that can be used to analyse and compare the cytotoxicities of nanomaterials such as carbon nanotubes (CNTs) and gold nanoparticles (AuNPs), since such materials can be applied as contrast agents or drug delivery carriers. The bioimpedance system possesses great potential in many medical research fields including nanotechnology. Electric cell-substrate impedance sensing (ECIS) is a particular bioimpedance system that offers a real-time, non-invasive, and quantitative measurement method for the cytotoxicity of various materials. The present work compared the cytotoxicity of AuNPs to that of purchased single-walled carbon nanotubes (SWCNTs). The size-controlled and monodispersed AuNPs were synthesized under autoclaved conditions and reduced by ascorbic acid (AA) whereas the purchased SWCNTs were used without any surface modifications. Bioimpedance results were validated by conventional WST-1 and trypan blue assays, and transmission electron microscopy (TEM) and field emission scanning electron microscopy (FE-SEM) were performed to examine nanomaterials inside the VERO cells. This research evaluates the ability of the ECIS system compared to those of conventional methods in analyzing the cytotoxicity of AuNPs and SWCNTs with higher sensitivity under real-time conditions.
authors: College of Bionanotechnology, Kyungwon University, Gyeonggi-do, Republic of Korea.
authors: Karthikeyan
authors: K
authors: Kandasamy
authors: Cheol Soo
authors: CS
authors: Choi
authors: Sanghyo
authors: S
authors: Kim
mesh_terms: D000818:Animals; D001703:Biophysics / Q000379:methods*; D002463:Cell Membrane Permeability; D002470:Cell Survival; D002522:Chlorocebus aethiops; D003603:Cytotoxins / Q000009:adverse effects*; D017097:Electric Impedance; D004847:Epithelial Cells / Q000166:cytology / Q000378:metabolism; D006046:Gold / Q000009:adverse effects*; D053758:Nanoparticles / Q000009:adverse effects* / Q000648:ultrastructure; D037742:Nanotubes, Carbon / Q000009:adverse effects* / Q000648:ultrastructure; D014709:Vero Cells
chemical_list: D003603:Cytotoxins; D037742:Nanotubes, Carbon; D006046:Gold