Basic features of a cell electroporation model: illustrative behavior for two very different pulses

Area of Science:

• Biophysics
• Computational Biology
• Cellular Electrophysiology

Background:

• Cell electroporation is crucial for drug delivery and cancer therapy.
• Accurate modeling of dynamic membrane changes during electroporation is needed.

Purpose of the Study:

• To develop a comprehensive model for cell electroporation.
• To simulate dynamic membrane property modifications and solute transport.

Main Methods:

• Developed a multiscale model incorporating passive and active electrical components.
• Simulated responses to idealized and experimental pulse waveforms (long and short pulses).
• Analyzed transmembrane voltage, membrane conductance, and solute transport (calcein, propidium).

Main Results:

• Long pulses (100 μs) create two pore subpopulations (~1.5 nm and ~12 nm).
• Short pulses (10 ns) generate more numerous, smaller pores (<3 nm).
• Model demonstrates distinct electrical and poration behaviors for different pulse types.

Conclusions:

• The model accurately simulates cell electroporation dynamics and solute transport.
• It provides insights into pulse-dependent pore formation for biological applications.
• Future extensions can incorporate lipid composition and slower post-pulse membrane changes.