期刊
RSC ADVANCES
卷 7, 期 3, 页码 1439-1442出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra25349k
关键词
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资金
- QualityNano project
- German Research Foundation (DFG) within the 'Forschungsstipendium' [ME 4296/1-1]
- SFI Industry fellowship [15/IFA/3057]
- Luca Boselli the EU H2020 Nanofacturing projects [646364]
- Science Foundation Ireland (SFI) [15/IFA/3057] Funding Source: Science Foundation Ireland (SFI)
D-amino acid oxidase (DAAO) is an enzyme which generates reactive oxygen species (ROS) and it is believed to have potential uses as a novel therapeutic molecule if internalized by cancer cells or if they are localized close to their plasma membrane. When conjugated onto iron oxide nanoparticles (NPs), the enzyme can be magnetically directed to targeted locations with an increased efficacy. A subsequent injection of DAAO substrate D-alanine can initiate ROS production and induce apoptosis of cells surrounding the NP-DAAO complex. Here, we describe a platform for optimal bioconjugation using monodisperse g-Fe2O3 NPs (similar to 10 nm) resulting in high DAAO loading, stable NP-DAAO dispersions and more than 90% enzymatic activity recovery, which is retained using the particles in human serum. Lastly, since the NP-DAAO system is designed for cancer therapy, we proved its efficacy in killing SKOV-3, U87 and HCT-116 cancer cells.
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