Quantitative model of small molecules uptake after in vitro cell electropermeabilization

Area of Science:

• Biophysics
• Cell Biology
• Biotechnology

Background:

• Electropermeabilization involves applying electric pulses to temporarily alter cell membrane permeability.
• This process is crucial for transmembrane transport of molecules into cells.
• Understanding and controlling electropermeabilization is key for various biotechnological applications.

Purpose of the Study:

• To develop a model for diffusion-driven transmembrane transport of small molecules during electropermeabilization.
• To optimize parameters influencing molecular flow between intracellular and extracellular spaces.
• To analyze the impact of cell size distribution on cell permeabilization and survival.

Main Methods:

• Development of a mathematical model for diffusion-driven transmembrane transport.
• Division of the electropermeabilization process into permeabilizing and resealing phases.
• Analysis of molecular uptake as a function of time, voltage, and pulse duration.

Main Results:

• The model accurately describes transmembrane transport caused by electropermeabilization.
• Optimization of parameters allows for controlled study of molecular uptake.
• Cell size distribution significantly influences cell permeabilization and survival curves.

Conclusions:

• The developed model provides a robust framework for studying electropermeabilization-induced molecular transport.
• Precise control over experimental parameters is essential for efficient and reversible cell permeabilization.
• Cell size heterogeneity is a critical factor affecting cellular response to electric pulses.