Annals of Biomedical Engineering

, Volume 35, Issue 7, pp 1264–1275 | Cite as

Electric Fields around and within Single Cells during Electroporation—A Model Study

  • Brian J. Mossop
  • Roger C. Barr
  • Joshua W. Henshaw
  • Fan Yuan
Article

Abstract

One of the key issues in electric field-mediated molecular delivery into cells is how the intracellular field is altered by electroporation. Therefore, we simulated the electric field in both the extracellular and intracellular domains of spherical cells during electroporation. The electroporated membrane was modeled macroscopically by assuming that its electric resistivity was smaller than that of the intact membrane. The size of the electroporated region on the membrane varied from zero to the entire surface of the cell. We observed that for a range of values of model constants, the intracellular current could vary several orders of magnitude whereas the maximum variations in the extracellular and total currents were less than 8% and 4%, respectively. A similar difference in the variations was observed when comparing the electric fields near the center of the cell and across the permeabilized membrane, respectively. Electroporation also caused redirection of the extracellular field that was significant only within a small volume in the vicinity of the permeabilized regions, suggesting that the electric field can only facilitate passive cellular uptake of charged molecules near the pores. Within the cell, the field was directed radially from the permeabilized regions, which may be important for improving intracellular distribution of charged molecules.

Keywords

Intracellular electric field Single cells Electroporation Molecular delivery 

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Copyright information

© Biomedical Engineering Society 2007

Authors and Affiliations

  • Brian J. Mossop
    • 1
  • Roger C. Barr
    • 1
  • Joshua W. Henshaw
    • 1
  • Fan Yuan
    • 1
  1. 1.Department of Biomedical EngineeringDuke UniversityDurhamUSA

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