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Enhanced Green Fluorescent Protein Streaming Dielectrophoresis in Insulator-Based Microfluidic Devices
Jerry Sheu1, Sean Seyler1, A K M Fazlul Karim Rasel1
1School of Molecular Sciences, Arizona State University, Tempe, Arizona, USA.
Electrophoresis
|November 11, 2024
Summary
This study introduces a novel microfluidic system for precisely measuring protein dielectrophoretic susceptibility. This advancement enables accurate protein manipulation, advancing analytical biochemistry applications.
Area of Science:
- Biophysics
- Analytical Biochemistry
- Microfluidics
Background:
- Proteins can be manipulated by electric fields in microfluidic devices.
- Existing theories often underestimate the forces involved in protein manipulation.
- Experimental data is often difficult to interpret and compare.
Purpose of the Study:
- To present a clear and interpretable experimental system.
- To quantitatively determine the dielectrophoretic susceptibility of native-structure proteins.
- To enable accurate comparison with theoretical models.
Main Methods:
- Utilizing microfluidic devices with modest electric fields (10^5-10^6 V/m).
- Measuring dielectrophoretic susceptibility of unlabeled, unaggregated proteins.
- Employing sub-nanogram protein quantities and picoliter probed volumes.
Main Results:
- Quantitative determination of dielectrophoretic susceptibility achieved.
- Proteins manipulated without significant increases in local concentration.
- Analysis completed within 10 seconds.
Conclusions:
- The developed system provides a robust platform for protein analysis.
- Accurate measurement of protein dielectrophoretic susceptibility is now possible.
- This facilitates a deeper understanding of protein-field interactions.
