Opto-Electric Cellular Biosensor Using Optically Transparent Indium Tin Oxide (ITO) Electrodes
Abstract
Indium tin oxide (ITO) biosensors are used to perform simultaneous optical and electrical measurements in order to examine the dynamic cellular attachment, spreading, and proliferation of endothelial cells (ECs) as well as cytotoxic effects when exposed to cytochalasin D. A detailed description of the fabrication of these sensors is provided and their superior optical characteristics are qualitatively shown using four different microscopic images. Differential interference contrast microscopy (DICM) images were acquired simultaneously with micro-impedance measurements as a function of frequency and time. A digital image processing algorithm quantified the cell-covered electrode area as a function of time. In addition, cytotoxicity effects, produced by the toxic agent cytochalasin D, were examined using micro-impedance measurements, confocal microscopy images of stained actin-filaments, and interference reflection contrast microscopy (IRCM) capable of examining the bottom morphology of a cell. The results of this study show (1) the dynamic optical and electrical cellular characteristics using optically thin ITO biosensors; (2) qualitative agreement between cell-covered electrode area and electrical impedance during cellular attachment; (3) in vitro cytotoxicity detection of ECs due to 3 µM cytochalasin D. The present opto-electric biosensor system is unique in that a simultaneous and integrated cellular analysis is possible for a variety ofmore »
- Authors:
-
- Univ. of Tennessee, Knoxville, TN (United States). Dept. of Mechanical, Aerospace and Biomedical Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Biosciences Division
- Univ. of Tennessee, Knoxville, TN (United States). Dept. of Mechanical, Aerospace and Biomedical Engineering
- Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1628564
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Sensors
- Additional Journal Information:
- Journal Volume: 8; Journal Issue: 5; Journal ID: ISSN 1424-8220
- Publisher:
- MDPI AG
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 47 OTHER INSTRUMENTATION; 42 ENGINEERING; Chemistry; Engineering; Instruments & Instrumentation
Citation Formats
Choi, Chang, Margraves, Chuck, Jun, Seung, English, Anthony, Rack, Philip, and Kihm, Kenneth. Opto-Electric Cellular Biosensor Using Optically Transparent Indium Tin Oxide (ITO) Electrodes. United States: N. p., 2008.
Web. doi:10.3390/s8053257.
Choi, Chang, Margraves, Chuck, Jun, Seung, English, Anthony, Rack, Philip, & Kihm, Kenneth. Opto-Electric Cellular Biosensor Using Optically Transparent Indium Tin Oxide (ITO) Electrodes. United States. https://doi.org/10.3390/s8053257
Choi, Chang, Margraves, Chuck, Jun, Seung, English, Anthony, Rack, Philip, and Kihm, Kenneth. Thu .
"Opto-Electric Cellular Biosensor Using Optically Transparent Indium Tin Oxide (ITO) Electrodes". United States. https://doi.org/10.3390/s8053257. https://www.osti.gov/servlets/purl/1628564.
@article{osti_1628564,
title = {Opto-Electric Cellular Biosensor Using Optically Transparent Indium Tin Oxide (ITO) Electrodes},
author = {Choi, Chang and Margraves, Chuck and Jun, Seung and English, Anthony and Rack, Philip and Kihm, Kenneth},
abstractNote = {Indium tin oxide (ITO) biosensors are used to perform simultaneous optical and electrical measurements in order to examine the dynamic cellular attachment, spreading, and proliferation of endothelial cells (ECs) as well as cytotoxic effects when exposed to cytochalasin D. A detailed description of the fabrication of these sensors is provided and their superior optical characteristics are qualitatively shown using four different microscopic images. Differential interference contrast microscopy (DICM) images were acquired simultaneously with micro-impedance measurements as a function of frequency and time. A digital image processing algorithm quantified the cell-covered electrode area as a function of time. In addition, cytotoxicity effects, produced by the toxic agent cytochalasin D, were examined using micro-impedance measurements, confocal microscopy images of stained actin-filaments, and interference reflection contrast microscopy (IRCM) capable of examining the bottom morphology of a cell. The results of this study show (1) the dynamic optical and electrical cellular characteristics using optically thin ITO biosensors; (2) qualitative agreement between cell-covered electrode area and electrical impedance during cellular attachment; (3) in vitro cytotoxicity detection of ECs due to 3 µM cytochalasin D. The present opto-electric biosensor system is unique in that a simultaneous and integrated cellular analysis is possible for a variety of living cells.},
doi = {10.3390/s8053257},
journal = {Sensors},
number = 5,
volume = 8,
place = {United States},
year = {Thu May 01 00:00:00 EDT 2008},
month = {Thu May 01 00:00:00 EDT 2008}
}
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