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Ultrasound‐Triggered Destruction of Folate‐Functionalized Mesoporous Silica Nanoparticle‐Loaded Microbubble for Targeted Tumor Therapy
Author(s) -
Lv Yongjiu,
Cao Yang,
Li Pan,
Liu Jianxin,
Chen Huali,
Hu Wenjing,
Zhang Liangke
Publication year - 2017
Publication title -
advanced healthcare materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.288
H-Index - 90
eISSN - 2192-2659
pISSN - 2192-2640
DOI - 10.1002/adhm.201700354
Subject(s) - hela , drug delivery , folate receptor , mesoporous silica , endocytosis , chemistry , nanoparticle , in vivo , biophysics , targeted drug delivery , in vitro , materials science , nanotechnology , cell , mesoporous material , biochemistry , medicine , cancer cell , microbiology and biotechnology , cancer , biology , catalysis
A multifunctional drug delivery vehicle, which combines the active targeted mesoporous silica nanoparticle (MSN) and microbubble (MB) drug delivery system, is proposed and fabricated. The resulting delivery vehicle integrates the merits of high drug loading capacity, multitargeting, and ultrasound‐guided releasing. Folate (FA), which serves as an active ligand, is modified to the surface of MSN (MSN‐FA) to enhance cell membrane translocation. MSN‐FA is loaded with tanshinone IIA (TAN), then encapsulated in a microbubble (denoted as MSN‐FA‐TAN‐MB) for more precise tumor targeting. The conjunction between FA and MSN is confirmed by fourier transform infrared spectroscopy (FTIR). The characteristics and morphology of MSN‐FA‐TAN‐MB are investigated by confocal microscopy and transmission electron microscopy. In vitro cytotoxicity and cellular uptake studies of MSN‐FA‐TAN‐MB are conducted on A549 and HeLa tumor cells. FA‐facilitated MSN‐FA‐TAN uptake is shown by HeLa cells that overexpress FA receptors via a FA‐receptor‐mediated endocytosis mechanism. The ultrasound response property of MSN‐FA‐TAN‐MB is also verified. MSN‐FA‐TAN‐MB shows significant antitumor efficacy in vivo with the assistance of FA, MB, and an external ultrasound irradiation. Thus, this multifunctional vehicle may provide a novel strategy for tumor targeting and imaging in tumor therapy.