1. Fabrication of pH-sensitive graphene oxide–Benazepril carrier as biosafety controlled release systems
- Author
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Li Yujiao, Jianfang Wang, Liu Tianxiong, Xiaoming Zhao, Xianzhe Chen, and Dongyi Zhang
- Subjects
Fabrication ,Materials science ,lcsh:Biotechnology ,Biomedical Engineering ,Biophysics ,Oxide ,Benazepril ,Bioengineering ,Nanotechnology ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,law.invention ,Biomaterials ,Mice ,Biosafety ,chemistry.chemical_compound ,law ,lcsh:TP248.13-248.65 ,medicine ,Animals ,Humans ,Graphene ,Oxides ,General Medicine ,Benzazepines ,Containment of Biohazards ,Hydrogen-Ion Concentration ,021001 nanoscience & nanotechnology ,Controlled release ,0104 chemical sciences ,chemistry ,Delayed-Action Preparations ,Drug release ,Graphite ,Caco-2 Cells ,0210 nano-technology ,Drug carrier ,medicine.drug - Abstract
A novel graphene oxide (GO)-based carrier was fabricated for the controlled release of Benazepril (BENA). Freeze dried samples of GO–BENA carrier were prepared for controlled drug release at different pHs (pH = 2, 7, and 10) and release kinetics indicate BENA desorption from GO is by Fickian diffusion. The BENA yield from the carrier amounted to ~55% of the adsorbed material in a strongly acidic medium after 50 h. Binding fractions of BENA to 10 mg/L GO was determined for different solution concentrations of the drug. In vitro assays of cell proliferation (WST-1 kit), cell structural integrity (LDH kit) and flow cytometric indicators of necrosis in three different cell lines (CACO-2, SGC-7901, and primary mouse hepatic fibroblast) all demonstrated that the GO carrier had a good biocompatibility. The pH-dependent release sensitivity of the GO-based carrier suggests that it is a potential candidate for use in the controlled release of drugs in the acidic environment of the stomach.
- Published
- 2020