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Doxorubicin Loaded Chitosan–W 18 O 49 Hybrid Nanoparticles for Combined Photothermal–Chemotherapy
Author(s) -
Yuan Shanmei,
Hua Jisong,
Zhou Yinyin,
Ding Yin,
Hu Yong
Publication year - 2017
Publication title -
macromolecular bioscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.924
H-Index - 105
eISSN - 1616-5195
pISSN - 1616-5187
DOI - 10.1002/mabi.201700033
Subject(s) - photothermal therapy , doxorubicin , chitosan , nanoparticle , hela , cytotoxicity , photothermal effect , in vivo , biophysics , chemistry , drug delivery , materials science , nanotechnology , dynamic light scattering , in vitro , chemotherapy , biochemistry , medicine , biology , surgery , microbiology and biotechnology
Combined treatment is more effective than single treatment against most forms of cancer. In this work, doxorubicin loaded chitosan–W 18 O 49 nanoparticles combined with the photothermal therapy and chemotherapy are fabricated through the electrostatic interaction between positively charged chitosan and negatively charged W 18 O 49 nanoparticles. The in vitro and in vivo behaviors of these nanoparticles are examined by dynamic light scattering, transmission electron microscopy, cytotoxicity, near‐infrared fluorescence imaging, and tumor growth inhibition experiment. These nanoparticles have a mean size around 110 nm and show a pH sensitive drug release behavior. After irradiation by the 980 nm laser, these nanoparticles show more pronounced cytotoxicity against HeLa cells than that of free doxorubicin or photothermal therapy alone. The in vivo experiments confirm that their antitumor ability is significantly improved, resulting in superior efficiency in impeding tumor growth and extension of the lifetime of mice.