1
|
Ren X, Huo M, Wang M, Lin H, Zhang X, Yin J, Chen Y, Chen H. Highly Catalytic Niobium Carbide (MXene) Promotes Hematopoietic Recovery after Radiation by Free Radical Scavenging. ACS NANO 2019; 13:6438-6454. [PMID: 31180624 DOI: 10.1021/acsnano.8b09327] [Citation(s) in RCA: 112] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Ionizing radiation (IR) has been extensively used in industry and radiotherapy, but IR exposure from nuclear or radiological accidents often causes serious health effects in an exposed individual, and its application in radiotherapy inevitably brings undesirable damage to normal tissues. In this work, we have developed ultrathin two-dimensional (2D) niobium carbide (Nb2C) MXene as a radioprotectant and explored its application in scavenging free radicals against IR. The 2D Nb2C MXene features intriguing antioxidant properties in effectively eliminating hydrogen peroxide (H2O2), hydroxyl radicals (•OH), and superoxide radicals (O2•-). Pretreatment with biocompatible polyvinylpyrrolidone (PVP)-functionalized Nb2C nanosheets (Nb2C-PVP NSs) significantly reduces IR-induced production of reactive oxygen species (ROS), resulting in enhanced cell viability in vitro. A single intravenous injection of Nb2C-PVP significantly enhances the survival rate of 5 and 6.5 Gy irradiated mice to 100% and 81.25%, respectively, and significantly increases bone marrow mononuclear cells after IR. Critically, Nb2C-PVP reverses the damage of the hematopoietic system in irradiated mice. Single administration of Nb2C-PVP significantly increases superoxide dismutase (SOD) activities, decreases malondialdehyde levels, and thereby reduces IR-induced pathological damage in the testis, small intestine, lung, and liver of 5 Gy irradiated mice. Importantly, Nb2C-PVP is almost completely eliminated from the mouse body on day 14 post treatment, and no obvious toxicities are observed during the 30-day post treatment period. Our study pioneers the application of 2D MXenes with intrinsic radioprotective nature in vivo.
Collapse
Affiliation(s)
- Xiangyi Ren
- Department of Radiation Biology, Institute of Radiation Medicine , Fudan University , Shanghai , 200032 , People's Republic of China
| | - Minfeng Huo
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai , 200050 , People's Republic of China
- University of Chinese Academy of Science , Beijing , 100049 , People's Republic of China
| | - Mengmeng Wang
- Department of Radiation Biology, Institute of Radiation Medicine , Fudan University , Shanghai , 200032 , People's Republic of China
| | - Han Lin
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai , 200050 , People's Republic of China
- University of Chinese Academy of Science , Beijing , 100049 , People's Republic of China
| | - Xuxia Zhang
- Department of Radiation Biology, Institute of Radiation Medicine , Fudan University , Shanghai , 200032 , People's Republic of China
| | - Jun Yin
- Department of Radiation Biology, Institute of Radiation Medicine , Fudan University , Shanghai , 200032 , People's Republic of China
| | - Yu Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai , 200050 , People's Republic of China
| | - Honghong Chen
- Department of Radiation Biology, Institute of Radiation Medicine , Fudan University , Shanghai , 200032 , People's Republic of China
| |
Collapse
|