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The Fabrication and Operation of a Continuous Flow, Micro-Electroporation System with Permeabilization Detection
Published on: January 7, 2022
Dynamics and control of the two-pulse protocol in electroporation: numerical exploration
1Mechanical, Aerospace, and Biomedical Engineering Department, University of Tennessee, Knoxville, TN 37996, USA.
Mathematical Biosciences
|March 31, 2011
Summary
Electroporation uses electrical pulses to create temporary pores in cell membranes for drug delivery. A new feedback control method precisely manages pore size, improving drug delivery accuracy and preventing cell damage.
Area of Science:
- Biophysics
- Cell Biology
- Biotechnology
Background:
- Electroporation utilizes external voltages to induce transient pores in cell membranes, enabling various biological and medical applications due to low toxicity and immunogenicity.
- A two-pulse electroporation protocol enhances drug delivery, such as gene electrotransfer, by combining fast, high-magnitude, and slow, low-magnitude electrical pulses.
Purpose of the Study:
- To investigate the dynamics and control of the two-pulse electroporation protocol using a macroscopic model.
- To address limitations of the conventional open-loop protocol, which struggles to sustain specific pore radii and predict delivery rates.
- To develop and evaluate a feedback mechanism for precise control over electroporation and ensure accurate, safe drug delivery.
Main Methods:
- Macroscopic modeling of electroporation dynamics.
- Numerical simulations of the two-pulse protocol.
- Development and testing of a feedback control algorithm.
Main Results:
- Numerical simulations revealed limitations in the conventional two-pulse protocol, with certain pore radii being unsustainable.
- The conventional protocol necessitates larger pores than ideal for targeted molecules and lacks a priori delivery rate prediction.
- A straightforward feedback algorithm demonstrated robust control, achieving desired pore radii and precise electroporation without prior model knowledge.
Conclusions:
- The study highlights the limitations of open-loop two-pulse electroporation for controlled drug delivery.
- A feedback control strategy effectively overcomes these limitations, enabling precise control over pore size and delivery rates.
- The developed feedback algorithm shows promise for experimental implementation, potentially improving the safety and efficacy of electroporation-based therapies.
