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Zeng H, Yuan X, Yang X, Liu L, Lin Y, Xie L, Chai X, Xu K, Du G, Zhang L. Synthesis and application of hypochlorite ratiometric fluorescence probe based on cellulose. Int J Biol Macromol 2024; 260:129660. [PMID: 38253145 DOI: 10.1016/j.ijbiomac.2024.129660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/26/2023] [Accepted: 01/19/2024] [Indexed: 01/24/2024]
Abstract
Cellulose is the most abundant natural polymer with good biocompatibility and easy modification characteristics. In this paper, a novel cellulose fluorescence probe CNS for detecting ClO- was prepared by modifying microcrystalline cellulose (MCC). The fluorescence detection results indicate that CNS exhibits a highly specific "ratiometric" and "colorimetric" fluorescence response to ClO-. In the presence of ClO-, the fluorescence color changes from green to cyan. In addition, the color of the solution changes from yellow to colorless, which can be observed with the "naked eye". Considering the good selectivity and anti-interference ability of CNS, the probe can be used for the detection of ClO- in real water samples. Importantly, CNS composite films and test papers were prepared and showed practicability in the detection of ClO-, highlighting its broad application potentials.
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Affiliation(s)
- Heyang Zeng
- Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China
| | - Xushuo Yuan
- Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China
| | - Xinjie Yang
- Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China
| | - Li Liu
- Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China
| | - Yanfei Lin
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China.
| | - Linkun Xie
- Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China
| | - Xijuan Chai
- Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China
| | - Kaimeng Xu
- Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China
| | - Guanben Du
- Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China.
| | - Lianpeng Zhang
- Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China.
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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] [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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