Intracellular Delivery of Bleomycin by Combined Application of Electroporation and Sonoporation in Vitro

Intracellular Delivery of Bleomycin by Combined Application of Electroporation and Sonoporation... In this study, we aimed to determine whether the combination of electroporation (EP) and ultrasound (US) waves (sonoporation) can result in an increased intracellular delivery of anticancer drug bleomycin. CHO cells were treated with electric pulses (1 or 8 high voltage pulses of 800 or 1200 V/cm, 100 μs or 1 low voltage pulse of 100 or 250 V/cm, 100 ms) and with 880 kHz US of 320 or 500 kPa peak negative pressure, 100 % duty cycle, applied for 2 s in the presence or absence of exogenously added contrast agent microbubbles. Various sequential or simultaneous combinations of EP and sonoporation were used. The results of the study showed that i) sequential treatment of cells by EP and sonoporation enhanced bleomycin electrosonotransfer at the reduced energy of electric field and US; ii) sequential combination of EP and sonoporation induced a summation effect which at some conditions was more prominent when the cells were treated first by EP and then by sonoporation; iii) the most efficient intracellular delivery of bleomycin was achieved by the simultaneous application of cell EP and sonoporation resulting in percentage of reversibly porated cells above the summation level; and iv) compared with sequential application of EP and sonoporation, simultaneous use of electric pulses and US increased cell viability in the absence of bleomycin. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Membrane Biology Springer Journals

Intracellular Delivery of Bleomycin by Combined Application of Electroporation and Sonoporation in Vitro

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Publisher
Springer Journals
Copyright
Copyright © 2016 by Springer Science+Business Media New York
Subject
Life Sciences; Biochemistry, general; Human Physiology
ISSN
0022-2631
eISSN
1432-1424
DOI
10.1007/s00232-016-9911-4
pmid
27317391
Publisher site
See Article on Publisher Site

Abstract

In this study, we aimed to determine whether the combination of electroporation (EP) and ultrasound (US) waves (sonoporation) can result in an increased intracellular delivery of anticancer drug bleomycin. CHO cells were treated with electric pulses (1 or 8 high voltage pulses of 800 or 1200 V/cm, 100 μs or 1 low voltage pulse of 100 or 250 V/cm, 100 ms) and with 880 kHz US of 320 or 500 kPa peak negative pressure, 100 % duty cycle, applied for 2 s in the presence or absence of exogenously added contrast agent microbubbles. Various sequential or simultaneous combinations of EP and sonoporation were used. The results of the study showed that i) sequential treatment of cells by EP and sonoporation enhanced bleomycin electrosonotransfer at the reduced energy of electric field and US; ii) sequential combination of EP and sonoporation induced a summation effect which at some conditions was more prominent when the cells were treated first by EP and then by sonoporation; iii) the most efficient intracellular delivery of bleomycin was achieved by the simultaneous application of cell EP and sonoporation resulting in percentage of reversibly porated cells above the summation level; and iv) compared with sequential application of EP and sonoporation, simultaneous use of electric pulses and US increased cell viability in the absence of bleomycin.

Journal

The Journal of Membrane Biology – Springer Journals

Published: Jun 17, 2016

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