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Electroporation: a general phenomenon for manipulating cells and tissues
1Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge 02139.
Journal of Cellular Biochemistry
|April 1, 1993
Summary
Electroporation uses electrical pulses to temporarily permeabilize cell membranes, enabling molecular transport. This versatile technique has diverse applications in cell biology, medicine, and drug delivery.
Area of Science:
- Biophysics
- Cell Biology
- Biotechnology
Background:
- Electroporation is a cell membrane phenomenon with established and emerging applications.
- Common uses include DNA introduction, reagent delivery, and selective cell loading.
- Emerging applications involve tissue electroporation for cancer therapy, gene therapy, and drug delivery.
Purpose of the Study:
- To review the basic phenomena, mechanisms, and applications of electroporation.
- To highlight the versatility of electroporation in biological and medical contexts.
- To discuss current understanding and future potential of electroporation techniques.
Main Methods:
- Electroporation involves applying short electrical pulses (microseconds to milliseconds) to membranes.
- For isolated cells, pulse magnitudes range from 10^3 to 10^4 V/cm.
- A transmembrane voltage of 0.5–1.5 V triggers reversible electrical breakdown (REB).
Main Results:
- Electroporation causes a significant increase in molecular transport across the cell membrane.
- Reversible electrical breakdown leads to rapid membrane discharge and elevated transmembrane voltage.
- Membrane recovery can be slow, and cell stress may occur due to chemical imbalances.
Conclusions:
- Electroporation is a universal membrane phenomenon applicable to both cell and artificial membranes.
- The technique facilitates intracellular delivery, cell modification, and therapeutic interventions.
- Further exploration of tissue electroporation holds promise for advanced medical treatments.