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Vorinostat-eluting poly(DL-lactide-co-glycolide) nanofiber-coated stent for inhibition of cholangiocarcinoma cells

Authors Kwak TW, Lee HL, Song YH, Kim C, Kim JS, Seo SJ, Jeong YI, Kang DH

Received 16 May 2017

Accepted for publication 29 July 2017

Published 17 October 2017 Volume 2017:12 Pages 7669—7680

DOI https://doi.org/10.2147/IJN.S141920

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Lakshmi Kiran Chelluri

Peer reviewer comments 3

Editor who approved publication: Dr Thomas J Webster

Tae Won Kwak,1,* Hye Lim Lee,2,* Yeon Hui Song,2 Chan Kim,3 Jungsoo Kim,2 Sol-Ji Seo,2 Young-Il Jeong,2 Dae Hwan Kang2,4

1Medical Convergence Textile Center, Gyeongbuk, Republic of Korea; 2Biomedical Research Institute, Pusan National University Hospital, Pusan, Republic of Korea; 3Amogreentech Co. Ltd. Gyeonggi-do, Republic of Korea; 4Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Gyeongnam, Republic of Korea

*These authors contributed equally to this work

Purpose: The aim of this study was to fabricate a vorinostat (Zolinza™)-eluting nanofiber membrane-coated gastrointestinal (GI) stent and to study its antitumor activity against cholangiocarcinoma (CCA) cells in vitro and in vivo.
Methods: Vorinostat and poly(DL-lactide-co-glycolide) dissolved in an organic solvent was sprayed onto a GI stent to make a nanofiber-coated stent using an electro-spinning machine. Intact vorinostat and vorinostat released from nanofibers was used to assess anticancer activity in vitro against various CCA cells. The antitumor activity of the vorinostat-eluting nanofiber membrane-coated stent was evaluated using HuCC-T1 bearing mice.
Results: A vorinostat-incorporated polymer nanofiber membrane was formed on the surface of the GI stent. Vorinostat was continuously released from the nanofiber membrane over 10 days, and its release rate was higher in cell culture media than in phosphate-buffered saline. Released vorinostat showed similar anticancer activity against various CCA cells in vitro compared to that of vorinostat. Like vorinostat, vorinostat released from nanofibers induced acetylation of histone H4 and inhibited histone deacetylases 1·3·4/5/7 expression in vitro and in vivo. Furthermore, vorinostat nanofibers showed a higher tumor growth inhibition rate in HuCC-T1 bearing mice than vorinostat injections.
Conclusion: Vorinostat-eluting nanofiber membranes showed significant antitumor activity against CCA cells in vitro and in vivo. We suggest the vorinostat nanofiber-coated stent may be a promising candidate for CCA treatment.

Keywords: vorinostat, nanofiber, GI stent, cholangiocarcinoma, drug eluting

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