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The application of hyaluronic acid-derivatized carbon nanotubes in hematoporphyrin monomethyl ether-based photodynamic therapy for in vivo and in vitro cancer treatment

Authors Shi J, Ma R, Wang L, Zhang J, Liu R, Li L, Liu Y, Hou L, Yu X, Gao J, Zhang Zhenzhong, Zhou S, Zhang H

Received 19 March 2013

Accepted for publication 23 April 2013

Published 1 July 2013 Volume 2013:8(1) Pages 2361—2373


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 5

Jinjin Shi,* Rourou Ma,* Lei Wang, Jing Zhang, Ruiyuan Liu, Lulu Li, Yan Liu, Lin Hou, Xiaoyuan Yu, Jun Gao, Zhenzhong Zhang

School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, People's Republic of China

*These authors contributed equally to this work

Abstract: Carbon nanotubes (CNTs) have shown great potential in both photothermal therapy and drug delivery. In this study, a CNT derivative, hyaluronic acid-derivatized CNTs (HA-CNTs) with high aqueous solubility, neutral pH, and tumor-targeting activity, were synthesized and characterized, and then a new photodynamic therapy agent, hematoporphyrin monomethyl ether (HMME), was adsorbed onto the functionalized CNTs to develop HMME-HA-CNTs. Tumor growth inhibition was investigated both in vivo and in vitro by a combination of photothermal therapy and photodynamic therapy using HMME-HA-CNTs. The ability of HMME-HA-CNT nanoparticles to combine local specific photodynamic therapy with external near-infrared photothermal therapy significantly improved the therapeutic efficacy of cancer treatment. Compared with photodynamic therapy or photothermal therapy alone, the combined treatment demonstrated a synergistic effect, resulting in higher therapeutic efficacy without obvious toxic effects to normal organs. Overall, it was demonstrated that HMME-HA-CNTs could be successfully applied to photodynamic therapy and photothermal therapy simultaneously in future tumor therapy.

Keywords: photodynamic therapy, photothermal therapy, HA-derivatized carbon nanotubes, tumor targeting, synergistic effect, hematoporphyrin monomethyl ether

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