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Nano “Chocolate Waffle” for near‐IR Responsive Drug Releasing System
Author(s) -
Lee Junseok,
Park Hansoo,
Kim Won Jong
Publication year - 2015
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201403228
Subject(s) - drug delivery , photothermal therapy , cytotoxicity , hela , materials science , doxorubicin , nanotechnology , nano , mesoporous silica , drug , chemistry , mesoporous material , organic chemistry , pharmacology , cell , in vitro , composite material , medicine , biochemistry , surgery , chemotherapy , catalysis
A majority of the photo‐responsive drug‐delivery systems that are currently being studied require a complicated synthesis method. Here, we prepare a near‐infrared responsive, photothermally controllable, drug‐delivery carrier by a simple mixing and extraction process without the incorporation of toxic chemicals. A blend of doxorubicin (DOX), an anticancer drug, and a phase‐change material (PCM) are loaded onto the mesoporous structure of silica‐coated graphene oxide (GO@MS) to form a waffle‐like structure, which is confirmed by various physicochemical analyses. The cytotoxicity of DOX/PCM‐loaded GO@MS (DOX/PCM‐GO@MS) against HeLa cells is 50 times higher than that of free DOX, and this improved activity can be attributed to the photothermal effectiveness of GO@MS. Additionally, the cytotoxicity and uptake mechanism of the PCM‐based material are analyzed by flow cytometry. Taken together, our results suggest an enormous potential for spatio‐temporal control in photothermally responsive drug‐delivery systems.