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Wang H, Li P, Yu D, Zhang Y, Wang Z, Liu C, Qiu H, Liu Z, Ren J, Qu X. Unraveling the Enzymatic Activity of Oxygenated Carbon Nanotubes and Their Application in the Treatment of Bacterial Infections. Nano Lett 2018; 18:3344-3351. [PMID: 29763562 DOI: 10.1021/acs.nanolett.7b05095] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Carbon nanotubes (CNTs) and their derivatives have emerged as a series of efficient biocatalysts to mimic the function of natural enzymes in recent years. However, the unsatisfiable enzymatic efficiency usually limits their practical usage ranging from materials science to biotechnology. Here, for the first time, we present the synthesis of several oxygenated-group-enriched carbon nanotubes (o-CNTs) via a facile but green approach, as well as their usage as high-performance peroxidase mimics for biocatalytic reaction. Exhaustive characterizations of the enzymatic activity of o-CNTs have been provided by exploring the accurate effect of various oxygenated groups on their surface including carbonyl, carboxyl, and hydroxyl groups. Because of the "competitive inhibition" effect among all of these oxygenated groups, the catalytic efficiency of o-CNTs is significantly enhanced by weakening the presence of noncatalytic sites. Furthermore, the admirable enzymatic activity of these o-CNTs has been successfully applied in the treatment of bacterial infections, and the results of both in vitro and in vivo nanozyme-mediated bacterial clearance clearly demonstrate the feasibility of o-CNTs as robust peroxidase mimics to effectively decrease the bacterial viability under physiological conditions. We believe that the present study will not only facilitate the construction of novel efficient nanozymes by rationally adjusting the degree of the "competitive inhibition" effect, but also broaden the biological usage of o-CNT-based nanomaterials via their satisfactory enzymatic activity.
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Affiliation(s)
- Huan Wang
- State Key Laboratory of Rare Earth Resources Utilization and Laboratory of Chemical Biology , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022 , P. R. China
- University of Science and Technology of China , Hefei 230029 , P. R. China
| | - Penghui Li
- MOE Key Laboratory of Green Chemistry, College of Chemistry , Sichuan University , Chengdu 610064 , P. R. China
| | - Dongqin Yu
- State Key Laboratory of Rare Earth Resources Utilization and Laboratory of Chemical Biology , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022 , P. R. China
- University of Science and Technology of China , Hefei 230029 , P. R. China
| | - Yan Zhang
- State Key Laboratory of Rare Earth Resources Utilization and Laboratory of Chemical Biology , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022 , P. R. China
- Graduate School of the Chinese Academy of Sciences , Beijing 100039 , P. R. China
| | - Zhenzhen Wang
- State Key Laboratory of Rare Earth Resources Utilization and Laboratory of Chemical Biology , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022 , P. R. China
- Graduate School of the Chinese Academy of Sciences , Beijing 100039 , P. R. China
| | - Chaoqun Liu
- State Key Laboratory of Rare Earth Resources Utilization and Laboratory of Chemical Biology , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022 , P. R. China
- Graduate School of the Chinese Academy of Sciences , Beijing 100039 , P. R. China
| | - Hao Qiu
- State Key Laboratory of Rare Earth Resources Utilization and Laboratory of Chemical Biology , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022 , P. R. China
- University of Science and Technology of China , Hefei 230029 , P. R. China
| | - Zhen Liu
- State Key Laboratory of Rare Earth Resources Utilization and Laboratory of Chemical Biology , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022 , P. R. China
| | - Jinsong Ren
- State Key Laboratory of Rare Earth Resources Utilization and Laboratory of Chemical Biology , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022 , P. R. China
| | - Xiaogang Qu
- State Key Laboratory of Rare Earth Resources Utilization and Laboratory of Chemical Biology , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022 , P. R. China
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