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The theranostic efficiency of tumor-specific, pH-responsive, peptide-modified, liposome-containing paclitaxel and superparamagnetic iron oxide nanoparticles

Authors Zheng XC, Ren W, Zhang S, Zhong T, Duan XC, Yin YF, Xu MQ, Hao YL, Li ZT, Li H, Liu M, Li ZY, Zhang X

Received 15 November 2017

Accepted for publication 25 January 2018

Published 13 March 2018 Volume 2018:13 Pages 1495—1504


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Dr Lei Yang

Xiu-Chai Zheng,1,2,* Wei Ren,1,2,* Shuang Zhang,1,2 Ting Zhong,1,2 Xiao-Chuan Duan,1,2 Yi-Fan Yin,1,2 Mei-Qi Xu,1,2 Yan-Li Hao,1,2 Zhan-Tao Li,1,2 Hui Li,1,2 Man Liu,1,2 Zhuo-Yue Li,1,2 Xuan Zhang1,2

1Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, School of Pharmaceutical Sciences, Peking University, Beijing, People’s Republic of China; 2Department of Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing, People’s Republic of China

*These authors contributed equally to this work

Background: In the present study, the tumor-specific, pH-responsive peptide H7K(R2)2 -modified, theranostic liposome-containing paclitaxel (PTX) and superparamagnetic iron oxide nanoparticles (SPIO NPs), PTX/SPIO-SSL-H7K(R2)2, was prepared by using H7K(R2)2 as the targeting ligand, SPIO NPs as the magnetic resonance imaging (MRI) agent, PTX as antitumor drug.
Methods: The PTX/SPIO-SSL-H7K(R2)2 was prepared by a thin film hydration method. The characteristics of PTX/SPIO-SSL-H7K(R2)2 were evaluated. The targeting effect, MRI, and antitumor activity of PTX/SPIO-SSL-H7K(R2)2 were investigated detail in vitro and in vivo in human breast carcinoma MDA-MB-231 cell models.
Results: Our results of in vitro flow cytometry, in vivo imaging, and in vivo MR imaging confirmed the pH-responsive characteristic of H7K(R2)2 in MDA-MB-231 cell line in vitro and in vivo. The results of in vivo MRI and in vivo antitumor activity confirmed the theranostic effect of PTX/SPIO-SSL-H7K(R2)2 in MDA-MB-231 tumor-bearing model.
Conclusion: Considering all our in vitro and in vivo results, we conclude that we developed targeting modified theranostic liposome which could achieve both role of antitumor and MRI.

Keywords: tumor-specific pH-responsive peptide, paclitaxel, superparamagnetic iron oxide nanoparticles, liposome, theranostic efficiency

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