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Patterning Cells on Optically Transparent Indium Tin Oxide Electrodes
Published on: August 20, 2007
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Opto-Electric Cellular Biosensor Using Optically Transparent Indium Tin Oxide (ITO) Electrodes.
Chang K Choi1, Chuck H Margraves1, Seung I Jun2
1The University of Tennessee, Dept. of Mechanical, Aerospace, and Biomedical Engineering, Knoxville, TN 37996 USA; Chang K. Choi, Presently at Oak Ridge National Laboratory, Bioscience Division, Oak Ridge, TN 37831 USA.
Sensors (Basel, Switzerland)
|November 24, 2016
Summary
Indium tin oxide (ITO) biosensors enable simultaneous optical and electrical analysis of endothelial cell behavior and drug toxicity. This technology offers integrated cellular analysis for various living cells.
Area of Science:
- Biomedical Engineering
- Cell Biology
- Materials Science
Background:
- Indium tin oxide (ITO) biosensors are crucial for real-time cellular monitoring.
- Understanding endothelial cell (EC) dynamics is vital for tissue engineering and drug development.
Purpose of the Study:
- To develop and characterize ITO biosensors for simultaneous optical and electrical measurements of ECs.
- To investigate EC attachment, spreading, proliferation, and cytotoxic effects.
- To demonstrate the integrated cellular analysis capabilities of the opto-electric biosensor system.
Main Methods:
- Fabrication of optically thin ITO biosensors.
- Simultaneous differential interference contrast microscopy (DICM) and micro-impedance measurements.
- Digital image processing to quantify cell-covered electrode area.
- Confocal microscopy and interference reflection contrast microscopy (IRCM) for cytotoxicity assessment.
Main Results:
- Demonstrated dynamic optical and electrical cellular characteristics using ITO biosensors.
- Observed qualitative agreement between cell-covered electrode area and electrical impedance during EC attachment.
- Successfully detected in vitro cytotoxicity of endothelial cells induced by cytochalasin D.
Conclusions:
- Optically thin ITO biosensors provide a unique platform for simultaneous, integrated cellular analysis.
- The developed biosensor system facilitates dynamic monitoring of cell behavior and toxicity.
- This technology has broad applications in studying living cells and their responses to stimuli.
