Electropermeabilization

Electropermeabilization, also known as electroporation, is a technique that uses short, high‑intensity electric pulses to transiently increase the permeability of cell membranes. The electric field induces the formation of aqueous pores in the lipid bilayer, allowing molecules such as dyes, nucleic acids, or drugs to enter or exit the cell. The process is highly controllable; pulse duration, amplitude, frequency, and number can be adjusted to target specific cell types or subcellular structures while minimizing irreversible damage.

The method is widely used in molecular biology for the transfection of plasmids, RNA, and protein therapeutics into adherent or suspension cells. In medical applications, electropermeabilization underpins electrochemotherapy, a cancer treatment that combines electric pulses with chemotherapeutic agents to enhance drug uptake by malignant cells. It also forms the basis of gene therapy strategies and vaccine delivery, where plasmid DNA encoding antigens is introduced directly into muscle or skin cells.

Nanoporation, a variant that employs sub‑microsecond pulses, has been explored for ex vivo manipulation of immune cells, improving the efficiency of CAR‑T cell manufacturing. Safety considerations include careful optimization of electroporation parameters to avoid excessive heating or cell lysis, and adherence to electrical safety standards when treating tissues in vivo.

The technique’s versatility, relative simplicity, and minimal requirement for reagents have made electropermeabilization a cornerstone of both basic research and translational medicine.