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Real-time cell analysis of the cytotoxicity of a pH-responsive drug-delivery matrix based on mesoporous silica materials functionalized with ferrocenecarboxylic acid.
Analytica Chimica Acta 2019 March 22
During the past decade, accumulating studies have been conducted on the mesoporous silica materials as the matrix of controlled drug-delivery, in which the complicated post-synthesis procedures are often involved with the molecular design to achieve the efficacy. In this study, a simplified drug delivery system of anti-cancer drug of doxorubicin (DOX) based on mesoporous SBA-15 functionalized with ferrocenecarboxylic acid (FCA) was constructed. Through a combination of physicochemical characterizations, the presence of FCA that was anchored inside the pore wall of amine groups grafted SBA-15 exhibits electron-accessible behavior without affecting the intactness of composite material. The pH-responsive release of drug molecules was achieved through the conjugation of DOX with FCA in the interior channels of mesoporous composites, which also favors the more coverage of DOX. Furthermore, the real-time cell analysis was performed to monitor the release of DOX from the mesopores and resulting cytotoxicity of cancer cell of A549 was evaluated, which results in a calculated IC50 of 43.8 μg/ml (24 h). The constructed mesoporous FCA-SBA-15 composite material provides an integrated nanoplatform to exert controlled-delivery of anti-cancer drug molecules.
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