期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 28, 页码 31745-31756出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c05041
关键词
acute kidney injury; carbon nanodots; reactive oxygen species; antioxidant
资金
- National Natural Science Foundation of China [81772710, 81972388]
- Project of Invigorating Health Care through Science, Technology and Education
- Jiangsu Provincial Key Medical Discipline (Laboratory) [ZDXKB2016014]
- China Postdoctoral Science Foundation [2019T120418, 2018M640477]
- Fundamental Research Funds for the Central Universities [14380221]
- Ministry of Science and Technology of China [2017YFA0700503]
As a reactive oxygen species (ROS)-promoted disease, acute kidney injury (AKI) is associated with high mortality and morbidity, but no effective pharmacological treatment is available. Kidney-targeted and ROS-reactive antioxidants are in urgent demand for AKI treatment. A promising nanotechnology-based strategy for targeting renal tubules offers new perspectives for AKI treatment but remains challenging because of the glomerular filtration barrier, which requires ultrasmall-sized therapeutics for penetration and filtration. Here, we fabricated four potential antioxidative carbon nanodots (CNDs) with ultrasmall size. After balancing the antioxidant properties and biocompatibility, m-phenylenediamine-based CNDs (PDA-CNDs) were chosen for further research. PDA-CNDs demonstrated remarkable antioxidant properties for scavenging multiple toxic free radicals, enabling efficient protection of cells under various oxidative stresses in vitro. Moreover, fluorescence imaging revealed that PDA-CNDs preferentially accumulated in the injured kidney of mice with ischemia-reperfusion (IR)-induced AKI. Blood renal function tests and kidney tissue staining revealed the therapeutic efficacy of PDA-CNDs for AKI in both the murine IR-induced AKI model and cisplatin-induced AKI model. Collectively, this is the first study revealing that specific rationally designed CNDs could be a promising pharmacological treatment for AKI induced by ROS.
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