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Fabrication of multifunctional triple-responsive platform based on CuS-capped periodic mesoporous organosilica nanoparticles for chemo-photothermal therapy

Authors Cheng XY, Li DJ, Lin AQ, Xu J, Wu L, Gu HJ, Huang ZY, Liu JY, Zhang YM, Yin XF

Received 6 March 2018

Accepted for publication 27 April 2018

Published 26 June 2018 Volume 2018:13 Pages 3661—3677


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Dr Linlin Sun

Xiangyang Cheng,1,* Dejian Li,2,* Aiqi Lin,3 Jun Xu,1 Liang Wu,1 Huijie Gu,1 Zhongyue Huang,1 Jiangyi Liu,1 Yiming Zhang,1 Xiaofan Yin1

1Department of Orthopedics, Minhang Branch, Zhongshan Hospital, Fudan University, Shanghai 201199, China; 2Department of Orthopedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201301, China; 3Department of Retired, Minhang Branch, Zhongshan Hospital, Fudan University, Shanghai 201199, China

*These authors contributed equally to this work

Introduction: For an ideal drug delivery system, the outstanding drug-loading capacity and specific control of the release of therapeutics at the desired lesions are crucial. In this work, we developed a triple-responsive nanoplatform based on copper sulfide (CuS)-capped yolk-shell-structured periodic mesoporous organosilica nanoparticles (YSPMOs) for synergetic chemo-photothermal therapy.
Methods: Herein, the YSPMOs were employed as a drug carrier, which exhibited a high doxorubicin (DOX) loading capacity of 386 mg/g. In this controlled-release drug delivery system, CuS serves as a gatekeeper to modify YSPMOs with reduction-cleavable disulfide bond (YSPMOs@CuS). CuS could not only avoid premature leakage in the delivery process, but also endowed the excellent photothermal therapy (PTT) ability.
Results: Upon entering into cancer cells, the CuS gatekeeper was opened with the breaking of disulfide bonds and the DOX release from YSPMOs(DOX)@CuS in response to the intracellular acidic environment and external laser irradiation. Such a precise control over drug release, combined with the photothermal effect of CuS nanoparticles, is possessed by synergistic chemo-photothermal therapy for cancer treatment. Both in vitro and in vivo experimental data indicated that the synergistic effect of YSPMOs(DOX)@CuS showed efficient antitumor effect. In addition, low systemic toxicity was observed in the pathologic examinations of liver, spleen, lungs, and kidneys.
Conclusion: This versatile nanoplatform combination of PTT, chemotherapeutics, and gating components shows general potential for designing multifunctional drug delivery systems.

Keywords: periodic mesoporous organosilica, CuS, triple-responsive release, chemo-photothermal therapy

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