期刊
ANALYTICAL CHEMISTRY
卷 88, 期 15, 页码 7530-7538出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.analchem.6b00665
关键词
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资金
- Australian Institute for Nanoscale Science and Technology, The University of Sydney
- Australian Leadership Award scholarship
The toxicity of nanomaterials raises major concerns because of the impact that nanomaterials may have on health, which remains poorly understood. We need to explore the fate of individual nanoparticles in cells at nano and molecular levels to establish their safety. Conformational changes in secondary protein structures are one of the main indicators of impaired biological function, and hence, the ability to identify these changes at a nanoscale level offers unique insights into the nanotoxicity of materials. Here, we used nanoscale infrared spectroscopy and demonstrated for the first time that nano diamond-induced alterations in both extra- and intracellular secondary protein structures lead to the formation of antiparallel beta-sheet, beta-turns, intermolecular beta-sheet, and aggregation of proteins. These conformational changes of the protein structure may result in the loss of functionality of proteins and in turn lead to adverse effects.
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