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Related Experiment Video

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Electroporation induced changes in extracellular vesicle profile.

M Singh1, G Mazaheri-Tehrani2, I Martin-Fabiani2

  • 1School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK.

Drug Delivery
|September 22, 2025
PubMed
Summary

Electroporation alters extracellular vesicle (EV) properties crucial for drug delivery systems (DDSs). Optimization is needed to maintain EV integrity and profile for therapeutic applications.

Keywords:
Extracellular vesiclesdrug deliveryelectroporationloadingnanoparticle

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Area of Science:

  • Biotechnology
  • Nanomedicine
  • Materials Science

Background:

  • Extracellular vesicles (EVs) show potential as drug delivery systems (DDSs).
  • Electroporation is a common method for loading therapeutic payloads but requires optimization for EV applications.
  • Understanding electroporation's impact on EV integrity and characteristics is vital for their therapeutic use.

Purpose of the Study:

  • To investigate the effects of electroporation on the physical and protein profile of extracellular vesicles (EVs).
  • To evaluate how varying electroporation parameters influence EV characteristics for potential drug delivery applications.

Main Methods:

  • EVs were isolated and subjected to electroporation with varied voltages, pulse numbers, and pulse widths.
  • Analysis included particle concentration, size distribution, polydispersity index (PDI), zeta potential (ZP), and protein concentration.
  • Western blotting was used to assess changes in EV surface markers.

Main Results:

  • Suspension in electroporation buffer (EB) reduced EV concentration, increased particle size, and decreased zeta potential (ZP).
  • Electroporation parameters (EPs) variably affected EV profiles, reducing surface protein concentration and leading to more neutral ZP.
  • Native EV characteristics were not fully recovered after washing post-electroporation.

Conclusions:

  • Electroporation protocols significantly impact fundamental EV properties, potentially affecting their efficacy as drug delivery systems (DDSs).
  • Further optimization of electroporation buffers (EBs) and protocols is necessary to preserve the native EV profile after payload loading.