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Zhu C, Bai Y, Zhao X, Liu S, Xia X, Zhang S, Wang Y, Zhang H, Xu Y, Chen S, Jiang J, Wu Y, Wu X, Zhang G, Zhang X, Hu J, Wang L, Zhao Y, Bai Y. Antimicrobial Peptide MPX with Broad-Spectrum Bactericidal Activity Promotes Proper Abscess Formation and Relieves Skin Inflammation. Probiotics Antimicrob Proteins 2023; 15:1608-1625. [PMID: 36626016 DOI: 10.1007/s12602-022-10035-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2022] [Indexed: 01/11/2023]
Abstract
Bacteria have developed antibiotic resistance during the large-scale use of antibiotics, and multidrug-resistant strains are common. The development of new antibiotics or antibiotic substitutes has become an important challenge for humankind. MPX is a 14 amino acid peptide belonging to the MP antimicrobial peptide family. In this study, the antibacterial spectrum of the antimicrobial peptide MPX was first tested. The antimicrobial peptide MPX was tested for antimicrobial activity against the gram-positive bacterium S. aureus ATCC 25923, the gram-negative bacteria E. coli ATCC 25922 and Salmonella enterica serovar Typhimurium CVCC541, and the fungus Candida albicans ATCC 90029. The results showed that MPX had good antibacterial activity against the above four strains, especially against E. coli, for which the MIC was as low as 15.625 μg/mL. The study on the bactericidal mechanism of the antimicrobial peptide revealed that MPX can destroy the integrity of the cell membrane, increase membrane permeability, and change the electromotive force of the membrane, thereby allowing the contents to leak out and mediating bacterial death. A mouse acute infection model was used to evaluate the therapeutic effect of MPX after acute infection of subcutaneous tissue by S. aureus. The study showed that MPX could promote tissue repair in S. aureus infection and alleviate lung damage caused by S. aureus. In addition, skin H&E staining showed that MPX treatment facilitated the formation of appropriate abscesses at the subcutaneous infection site and facilitated the clearance of bacteria by the skin immune system. The above results show that MPX has good antibacterial activity and broad-spectrum antibacterial potential and can effectively prevent the invasion of subcutaneous tissue by S. aureus, providing new ideas and directions for the immunotherapy of bacterial infections.
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Affiliation(s)
- Chunling Zhu
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, China
- College of Veterinary Medicine, Jilin University, Changchun, 130000, China
| | - Yilin Bai
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, China
| | - Xueqin Zhao
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Shanqin Liu
- School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Xiaojing Xia
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Shouping Zhang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Yimin Wang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Huihui Zhang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Yanzhao Xu
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Shijun Chen
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Jinqing Jiang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Yundi Wu
- School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, 453003, China
- School of Biomedical Engineering, State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, China
| | - Xilong Wu
- School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, 453003, China
- School of Biomedical Engineering, State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, China
| | - Gaiping Zhang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Xueming Zhang
- College of Veterinary Medicine, Jilin University, Changchun, 130000, China
| | - Jianhe Hu
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Lei Wang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, China.
- School of Biomedical Engineering, State Key Laboratory of Marine Resource Utilization in the South China Sea, Hainan University, Haikou, 570228, China.
| | - Yaya Zhao
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, China.
| | - Yueyu Bai
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, 453003, China.
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Peng T, Guo W, Zhang Y, Wang Y, Zhu K, Guo Y, Wang Y, Lu Y, Yan H. The Core-Shell Heterostructure CNT@Li 2FeSiO 4@C as a Highly Stable Cathode Material for Lithium-Ion Batteries. Nanoscale Res Lett 2019; 14:326. [PMID: 31624928 PMCID: PMC6797695 DOI: 10.1186/s11671-019-3165-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 09/30/2019] [Indexed: 06/10/2023]
Abstract
The reasonable design of nanostructure is the key to solving the inherent defects and realizing a high performance of Li2FeSiO4 cathode materials. In this work, a novel heterostructure CNT@Li2FeSiO4@C has been designed and synthesized and used as a cathode material for lithium-ion battery. It is revealed that the product has a uniform core-shell structure, and the thickness of the Li2FeSiO4 layer and the outer carbon layer is about 19 nm and 2 nm, respectively. The rational design effectively accelerates the diffusion of lithium ions, improves the electric conductivity, and relieves the volume change during the charging/discharging process. With the advantages of its specific structure, CNT@Li2FeSiO4@C has successfully overcome the inherent shortcomings of Li2FeSiO4 and shown good reversible capacity and cycle properties.
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Affiliation(s)
- Tao Peng
- School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang, 464000, People's Republic of China.
- Key Laboratory of Microelectronics and Energy of Henan Province, Henan Joint International Research Laboratory of New Energy Storage Technology, Xinyang Normal University, Xinyang, 464000, People's Republic of China.
| | - Wei Guo
- School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang, 464000, People's Republic of China
- Key Laboratory of Microelectronics and Energy of Henan Province, Henan Joint International Research Laboratory of New Energy Storage Technology, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Yingge Zhang
- School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang, 464000, People's Republic of China
- Key Laboratory of Microelectronics and Energy of Henan Province, Henan Joint International Research Laboratory of New Energy Storage Technology, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Yangbo Wang
- School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang, 464000, People's Republic of China
- Key Laboratory of Microelectronics and Energy of Henan Province, Henan Joint International Research Laboratory of New Energy Storage Technology, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Kejia Zhu
- School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang, 464000, People's Republic of China
- Key Laboratory of Microelectronics and Energy of Henan Province, Henan Joint International Research Laboratory of New Energy Storage Technology, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Yan Guo
- School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang, 464000, People's Republic of China
- Key Laboratory of Microelectronics and Energy of Henan Province, Henan Joint International Research Laboratory of New Energy Storage Technology, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Yinghui Wang
- School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang, 464000, People's Republic of China
- Key Laboratory of Microelectronics and Energy of Henan Province, Henan Joint International Research Laboratory of New Energy Storage Technology, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Yang Lu
- School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang, 464000, People's Republic of China
- Key Laboratory of Microelectronics and Energy of Henan Province, Henan Joint International Research Laboratory of New Energy Storage Technology, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Hailong Yan
- School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang, 464000, People's Republic of China
- Key Laboratory of Microelectronics and Energy of Henan Province, Henan Joint International Research Laboratory of New Energy Storage Technology, Xinyang Normal University, Xinyang, 464000, People's Republic of China
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