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Biomedical Microdevices

, 20:88 | Cite as

Combination therapy comprising irreversible electroporation and hydroxycamptothecin loaded electrospun membranes to treat rabbit VX2 subcutaneous cancer

  • Lizhe Wang
  • Jian Chang
  • Yaqin Qu
  • Renna Qiu
Article
  • 81 Downloads

Abstract

Irreversible electroporation (IRE) is a kind of promising cancer treatment technology. However, local recurrence still occurs because of incomplete ablation. The aim of this study was to investigate the combined therapy of IRE and a hydroxycamptothecin loaded electrospun membrane (EM/HCPT) to treat rabbit VX2 subcutaneous cancer. HCPT loaded membranes were developed by electrospinning. Mechanical test and in vitro drug release study of EM/HCPT were performed. 24 rabbits with subcutaneous VX2 tumor were randomly divided into four groups: the control group, the EM/HCPT group, the IRE ablation group, and the IRE + EM/HCPT group. The tumor cells were ablated by IRE first, followed by subcutaneous implantation of EM/HCPT to release HCPT constantly in order to damage the residual cancer cells. The tumor inhibition efficacy was assessed by the tumor real-time monitoring, histological and immunofluorescent analyses, and transmission electron microscopy (TEM) examination. Assessment of the release from EM/HCPT showed that HCPT release lasted for about 7 days. The in vivo antitumor efficacy assessment, histological and immunofluorescent analyses, and TEM examination showed that IRE + EM/HCPT had the best tumor inhibition ability. In addition, the biochemical analyses and hematoxylin and eosin (H&E) staining of normal organs indicated that IRE + EM/HCPT treatment was safe. Our study provided a new concept in cancer treatment and might promote the application of IRE.

Keywords

Irreversible electroporation Hydroxycamptothecin Electrospun membrane VX2 cancer Combination therapy 

Notes

Acknowledgements

We thank Elixigen Corporation (Huntington Beach, California, USA) for helping in proofreading and editing the English of final manuscript.

Compliance with ethical standards

Conflict of interest

The authors report no declarations of interest.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.The First Hospital of Jilin UniversityJilinChina
  2. 2.China-Japan Union Hospital of Jilin UniversityJilinChina

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