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Xu B, Cai G, Gao Y, Chen M, Xu C, Wang C, Yu D, Qi D, Li R, Wu J. Nanofibrous Dressing with Nanocomposite Monoporous Microspheres for Chemodynamic Antibacterial Therapy and Wound Healing. ACS OMEGA 2023; 8:38481-38493. [PMID: 37867710 PMCID: PMC10586453 DOI: 10.1021/acsomega.3c05271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 09/20/2023] [Indexed: 10/24/2023]
Abstract
The excessive use of antibiotics and consequent bacterial resistance have emerged as crucial public safety challenges for humanity. As a promising antibacterial treatment, using reactive oxygen species (ROS) can effectively address this problem and has the advantages of being highly efficient and having low toxicity. Herein, electrospinning and electrospraying were employed to fabricate magnesium oxide (MgO)-based nanoparticle composited polycaprolactone (PCL) nanofibrous dressings for the chemodynamic treatment of bacteria-infected wounds. By utilizing electrospraying, erythrocyte-like monoporous PCL microspheres incorporating silver (Ag)- and copper (Cu)-doped MgO nanoparticles were generated, and the unique microsphere-filament structure enabled efficient anchoring on nanofibers. The composite dressings produced high levels of ROS, as confirmed by the 2,7-dichloriflurescin fluorescent probe. The sustained generation of ROS resulted in efficient glutathione oxidation and a remarkable bacterial killing rate of approximately 99% against Staphylococcus aureus (S. aureus). These dressings were found to be effective at treating externally infected wounds. The unique properties of these composite nanofibrous dressings suggest great potential for their use in the medical treatment of bacteria-infected injuries.
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Affiliation(s)
- Bingjie Xu
- MOE Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Guoqiang Cai
- NICE Zhejiang Technology Co., Ltd, Hangzhou 310013, China
- Key Laboratory of Green Cleaning Technology & Detergent of Zhejiang Province, Lishui 323000, China
| | - Yujie Gao
- MOE Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Key Laboratory of Green Cleaning Technology & Detergent of Zhejiang Province, Lishui 323000, China
| | - Mingchao Chen
- MOE Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Chenlu Xu
- Department of Oral and Maxillofacial Surgery, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Chenglong Wang
- MOE Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Dan Yu
- Department of Oral and Maxillofacial Surgery, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Dongming Qi
- MOE Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Key Laboratory of Green Cleaning Technology & Detergent of Zhejiang Province, Lishui 323000, China
| | - Renhong Li
- MOE Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jindan Wu
- MOE Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Key Laboratory of Green Cleaning Technology & Detergent of Zhejiang Province, Lishui 323000, China
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Shenoy RUK, Rama A, Govindan I, Naha A. The purview of doped nanoparticles: Insights into their biomedical applications. OPENNANO 2022. [DOI: 10.1016/j.onano.2022.100070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Hu P, Wang S, Zhuo Y. Strengthened CO2 adsorption over Ce/Al-promoted MgO for fast capture. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120518] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Li X, Hong X, Yang Y, Zhao J, Diko CS, Zhu Y. Enhanced antibacterial activity of acid treated MgO nanoparticles on Escherichia coli. RSC Adv 2021; 11:38202-38207. [PMID: 35498104 PMCID: PMC9043910 DOI: 10.1039/d1ra06221b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 11/23/2021] [Indexed: 12/19/2022] Open
Abstract
Acid treatment is one of the effective methods that directly modifies surface physical and chemical properties of inorganic materials, which improves the materials' application potential. In this work, the surface modified MgO nanoparticles (NPs) were prepared through a facile acid-treatment method at room temperature. Compared with the untreated sample, the surviving Escherichia coli (E. coli, ATCC 25922) colonies of the modified MgO NPs decreased from 120 to 54 (102 CFU mL-1). The enhanced antibacterial activity may be due to the improvement of oxygen vacancies and absorbed oxygen (OA) content (from 41.6% to 63.1%) as confirmed by electron spin resonance (ESR) and X-ray photoelectron spectroscopy (XPS). These findings revealed that the acid treatment method could directly modify the surface of MgO NPs to expose more oxygen vacancies, which would promote reactive oxygen species (ROS) generation. The membrane tube and single ROS scavenging results further indicated that the increased antibacterial ability originated from the synergetic effect of ROS damage (especially ˙O2 -) and direct contact between H-MgO NPs and E. coli.
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Affiliation(s)
| | | | - Yan Yang
- Dalian Maritime University China
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