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Magnetic multiwalled carbon nanotubes with controlled release of epirubicin: an intravesical instillation system for bladder cancer

Authors Suo N, Wang M, Jin Y, Ding J, Gao X, Sun X, Zhang H, Cui M, Zheng J, Li N, Jin X, Jiang S

Received 4 October 2018

Accepted for publication 4 January 2019

Published 15 February 2019 Volume 2019:14 Pages 1241—1254


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Dr Mian Wang

Ning Suo,1 Muwen Wang,1 Yang Jin,1 Jun Ding,2 Xueping Gao,3 Xiaoliang Sun,1 Haiyang Zhang,1 Meng Cui,4 Jilu Zheng,1 Nianlu Li,5 Xunbo Jin,1,* Shaobo Jiang1,*

1Department of Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China; 2Department of Mechanical Engineering, University of Maryland, Baltimore County, Baltimore, MD, 21250, USA; 3School of Material Science and Engineering, Shandong University, Jinan 250100, China; 4Department of Urology, Shandong Provincial Maternity and Childcare Hospital, Jinan 250014, China; 5School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China

*These authors contributed equally to this work

Background: Traditional intravesical instillation treatment in bladder cancer has limited efficacy, which results in a high frequency of recurrence.
Purpose: The aim of this study was to report on an epirubicin (EPI)-loaded magnetic multiwalled carbon nanotube (mMWCNTs-EPI) system for intravesical instillation in place of the current formulation.
Methods: The mMWCNTs-EPI system was formulated with carboxylated MWCNTs, Fe3O4 magnetic nanoparticles, and EPI. Features and antitumor activity of the system were investigated.
Results: Under the effect of external magnets, the mMWCNTs-EPI system showed sustained release and prolonged retention behavior and better antitumor activity than free EPI. The mMWCNTs-EPI system had higher efficiency in enhancing cytotoxicity and inhibiting proliferation in vitro and in vivo than free EPI. Our studies also revealed the atoxic nature of mMWCNTs.
Conclusion: These findings suggested that mMWCNTs are effective intravesical instillation agents with great potential for clinical application.

Keywords: carbon nanotubes, intravesical instillation, epirubicin, intravesical drug delivery

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