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Related Experiment Video

Updated: Jun 4, 2026

Monitoring Electroporation-Induced Changes in Action Potential Generation in Genetically Engineered Tet-On Spiking HEK cells

Monitoring Electroporation-Induced Changes in Action Potential Generation in Genetically Engineered Tet-On Spiking HEK cells

Published on: September 6, 2024

Electroporation-induced electrosensitization.

Olga N Pakhomova¹, Betsy W Gregory, Vera A Khorokhorina

¹Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, Virginia, United States of America.

|February 25, 2011

Summary

Electric pulses (EPs) sensitize cells to subsequent EPs, increasing treatment efficiency. This cell sensitization effect can be leveraged to enhance electroporation applications or mitigate side effects in therapies.

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Area of Science:

Biophysics
Cell Biology
Biotechnology

Background:

Electroporation uses electric pulses (EPs) to disrupt cell membranes.
Current electrical models of electroporation have limited predictive power.
The biological consequences of electroporation on cell susceptibility are not well understood.

Purpose of the Study:

To investigate the role of electric pulse (EP) rate on cell membrane permeabilization and cell death.
To determine if biological consequences of electroporation alter cell susceptibility to subsequent EPs.
To explore how EP rate and exposure duration affect electroporation efficiency.

Main Methods:

Varied EP rates (0.001–2,000 Hz) with constant pulse parameters (duration, number, amplitude).
Assessed membrane permeabilization and lethal effects in mammalian cells.
Investigated the impact of exposure duration and delayed fractionation of EP trains.

Main Results:

EP treatment efficiency was minimal at high EP rates and increased as rates decreased below a threshold (0.1–500 Hz), correlating with ~10s total duration.
Longer exposure durations consistently enhanced electroporation efficiency.
Splitting EP trains with a 1-5 minute delay significantly increased treatment effects.

Conclusions:

Electric pulses induce a delayed, gradual sensitization in cells, increasing susceptibility to subsequent EPs.
This sensitization can markedly enhance treatment outcomes, allowing for reduced exposure dose or increased cell lethality.
Accounting for sensitization can optimize electroporation applications like sterilization and reduce side effects in therapies such as electrochemotherapy and gene therapy.