1
|
Zhao Q, Zhao Q, Li J, Yi L. Antibacterial Activity and Action Mechanism of Bacteriocin Paracin wx7 as a Selective Biopreservative against Vancomycin-Resistant Enterococcus faecalis in Fresh-Cut Lettuce. Foods 2024; 13:1448. [PMID: 38790749 PMCID: PMC11119456 DOI: 10.3390/foods13101448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Revised: 05/03/2024] [Accepted: 05/06/2024] [Indexed: 05/26/2024] Open
Abstract
Fresh-cut vegetables are widely consumed, but there is no food preservative available to selectively inhibit vancomycin-resistant E. faecalis, which is a serious health menace in fresh-cut vegetables. To develop a promising food biopreservative, a bacteriocin, paracin wx7, was synthesized, showing selective inhibition against E. faecalis with MIC values of 4-8 μM. It showed instant bactericidal mode within 1 h at high concentrations with concomitant cell lysis against vancomycin-resistant E. faecalis. Its lethal effect was visualized in a dose-dependent manner by PI/SYTO9 staining observation. The results of an in vivo control experiment carried out on E. faecalis in fresh-cut lettuce showed that 99.97% of vancomycin-resistant E. faecalis were dead after 64 μM paracin wx7 treatment for 7 days without influencing total bacteria. Further, the action mechanism of paracin wx7 was investigated. Confocal microscopy showed that paracin wx7 was located both on the cell envelope and in cytoplasm. For the cell envelope, the studies of membrane permeability using SYTOX Green dyeing and DNA leakage revealed that paracin wx7 damaged the membrane integrity of E. faecalis. Simultaneously, it exhibited membrane depolarization after analysis using DiSC3(5). Damage to the cell envelope resulted in cell deformation observed by scanning electron microscopy. On entering the cytoplasm, the paracin wx7 induced the production of endogenous reactive oxygen species.
Collapse
Affiliation(s)
- Qian Zhao
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Qingling Zhao
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Jiabo Li
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Lanhua Yi
- College of Food Science, Southwest University, Chongqing 400715, China
- Research Center for Fruits and Vegetables Logistics Preservation and Nutritional Quality Control, Southwest University, Chongqing 400715, China
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Southwest University, Chongqing 400715, China
| |
Collapse
|
2
|
An JX, Zhang BQ, Liang HJ, Zhang ZJ, Liu YQ, Zhang SY. Antifungal Activity and Putative Mechanism of HWY-289, a Semisynthetic Protoberberine Derivative, against Botrytis cinerea. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:7716-7726. [PMID: 38536397 DOI: 10.1021/acs.jafc.3c08858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
The emergence of resistant pathogens has increased the demand for alternative fungicides. The use of natural products as chemical scaffolds is a potential method for developing fungicides. HWY-289, a semisynthetic protoberberine derivative, demonstrated broad-spectrum and potent activities against phytopathogenic fungi, particularly Botrytis cinerea (with EC50 values of 1.34 μg/mL). SEM and TEM imaging indicated that HWY-289 altered the morphology of the mycelium and the internal structure of cells. Transcriptomics revealed that it could break down cellular walls through amino acid sugar and nucleotide sugar metabolism. In addition, it substantially decreased chitinase activity and chitin synthase gene (BcCHSV) expression by 53.03 and 82.18% at 1.5 μg/mL, respectively. Moreover, this impacted the permeability and integrity of cell membranes. Finally, HWY-289 also hindered energy metabolism, resulting in a significant reduction of ATP content, ATPase activities, and key enzyme activities in the TCA cycle. Therefore, HWY-289 may be a potential candidate for the development of plant fungicides.
Collapse
Affiliation(s)
- Jun-Xia An
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Bao-Qi Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Hong-Jie Liang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Zhi-Jun Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Science, Huzhou University, Huzhou 313000, China
| | - Shao-Yong Zhang
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Science, Huzhou University, Huzhou 313000, China
| |
Collapse
|
3
|
Li S, Jiang S, Jia W, Guo T, Wang F, Li J, Yao Z. Natural antimicrobials from plants: Recent advances and future prospects. Food Chem 2024; 432:137231. [PMID: 37639892 DOI: 10.1016/j.foodchem.2023.137231] [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: 05/04/2023] [Revised: 08/09/2023] [Accepted: 08/19/2023] [Indexed: 08/31/2023]
Abstract
Plant-based antimicrobial substances have emerged as promising alternatives to conventional antibiotics and preservatives. Although many review studies have been done in this field, many of these reviews solely focus on specific compounds from particular perspectives. This paper aims to provide a comprehensive review on the various types of plant-based antimicrobial substances, the extraction and purification processes, as well as the application and safety issues. Combining different natural plant-derived substances shows promise in enhancing antimicrobial activities. Moreover, despite the existence of various methods (e.g., microwave-assisted extraction, supercritical fluid extraction) to extract and purify antimicrobial substances, isolating pure compounds remains a laborious process. Sustainability issues should also be considered when developing extraction methods. Additionally, the extraction process generates a significant amount of plant waste, necessitating proper utilization to ensure economic viability. Lastly, not all plant-derived substances are safe, and further research is needed to investigate their toxicity before widespread application.
Collapse
Affiliation(s)
- Shuo Li
- School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China
| | - Shanxue Jiang
- School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China; State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing 100048, China; China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China.
| | - Wenting Jia
- School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China
| | - Tongming Guo
- School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China
| | - Fang Wang
- School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China; State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing 100048, China; China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China
| | - Jing Li
- School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China; State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing 100048, China; China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China
| | - Zhiliang Yao
- School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China; State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing 100048, China; China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China.
| |
Collapse
|
4
|
She P, Yang Y, Li L, Li Y, Liu S, Li Z, Zhou L, Wu Y. Repurposing of the antimalarial agent tafenoquine to combat MRSA. mSystems 2023; 8:e0102623. [PMID: 38047647 PMCID: PMC10734505 DOI: 10.1128/msystems.01026-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 10/25/2023] [Indexed: 12/05/2023] Open
Abstract
IMPORTANCE This study represents the first investigation into the antimicrobial effect of TAF against S. aureus and its potential mechanisms. Our data highlighted the effects of TAF against MRSA planktonic cells, biofilms, and persister cells, which is conducive to broadening the application of TAF. Through mechanistic studies, we revealed that TAF targets bacterial cell membranes. In addition, the in vivo experiments in mice demonstrated the safety and antimicrobial efficacy of TAF, suggesting that TAF could be a potential antibacterial drug candidate for the treatment of infections caused by multiple drug-resistant S. aureus.
Collapse
Affiliation(s)
- Pengfei She
- Department of Laboratory Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Yifan Yang
- Department of Laboratory Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Linhui Li
- Department of Laboratory Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Yimin Li
- Department of Laboratory Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Shasha Liu
- Department of Laboratory Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Zehao Li
- Department of Laboratory Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Linying Zhou
- Department of Laboratory Medicine, The Affiliated Changsha Hospital of Xiangya School of Medicine (The First Hospital of Changsha), Central South University, Changsha, China
| | - Yong Wu
- Department of Laboratory Medicine, The Affiliated Changsha Hospital of Xiangya School of Medicine (The First Hospital of Changsha), Central South University, Changsha, China
| |
Collapse
|
5
|
Xiong Y, Chen Z, Bai B, Peng Y, Liu S, Fang D, Wen Z, Shang Y, Lin Z, Han S, Yu Z. Thiazolopyrimidinone Derivative H5-23 Enhances Daptomycin Activity against Linezolid-Resistant Enterococcus faecalis by Disrupting the Cell Membrane. ACS Infect Dis 2023; 9:2523-2537. [PMID: 38014911 DOI: 10.1021/acsinfecdis.3c00387] [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] [Indexed: 11/29/2023]
Abstract
The increasing emergence and dissemination of multidrug-resistant (MDR) Gram-positive pathogens pose a serious threat to global public health. Previous reports have demonstrated that the compound H5-23, which has a thiazolopyrimidinone core structure, exhibited antibacterial activity against Staphylococcus epidermidis in vitro. However, the antibacterial activity in vivo and mechanism of action of H5-23 against MDR bacteria have not been fully studied. In this study, we report that H5-23 has wide-spectrum antibacterial activity against Gram-positive bacteria. When combined with daptomycin (DAP), H5-23 demonstrates enhanced antimicrobial activity, effectively killing both planktonic and persister cells, as well as eradicating biofilm formation by linezolid-resistant Enterococcus faecalis. The development of resistance shows that H5-23 has a low propensity to induce antibiotic resistance compared to that of linezolid in vitro. Mechanistic studies reveal that H5-23 increases membrane permeability and disrupts membrane integrity, resulting in increased production of reactive oxygen species (ROS), metabolic perturbations, and ultimately cell death. Additionally, we demonstrate the synergistic antibacterial effect of H5-23 combined with DAP in a murine model. These findings suggest that H5-23 is a promising antimicrobial agent and provides a potential strategy for enhancing the efficacy of DAP in combating multidrug-resistant E. faecalis.
Collapse
Affiliation(s)
- Yanpeng Xiong
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
- Department of Infectious Diseases and Shenzhen Key Laboratory for Endogenous Infections, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen Nanshan People's Hospital and the Sixth Affiliated Hospital of Shenzhen University Medical School, Shenzhen 518052, China
| | - Zhong Chen
- Department of Infectious Diseases and Shenzhen Key Laboratory for Endogenous Infections, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen Nanshan People's Hospital and the Sixth Affiliated Hospital of Shenzhen University Medical School, Shenzhen 518052, China
| | - Bing Bai
- Department of Infectious Diseases and Shenzhen Key Laboratory for Endogenous Infections, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen Nanshan People's Hospital and the Sixth Affiliated Hospital of Shenzhen University Medical School, Shenzhen 518052, China
| | - Yalan Peng
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Shanghong Liu
- Department of Infectious Diseases and Shenzhen Key Laboratory for Endogenous Infections, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen Nanshan People's Hospital and the Sixth Affiliated Hospital of Shenzhen University Medical School, Shenzhen 518052, China
| | - Di Fang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Zewen Wen
- Department of Infectious Diseases and Shenzhen Key Laboratory for Endogenous Infections, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen Nanshan People's Hospital and the Sixth Affiliated Hospital of Shenzhen University Medical School, Shenzhen 518052, China
| | - Yongpeng Shang
- Department of Infectious Diseases and Shenzhen Key Laboratory for Endogenous Infections, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen Nanshan People's Hospital and the Sixth Affiliated Hospital of Shenzhen University Medical School, Shenzhen 518052, China
| | - Zhiwei Lin
- Department of Infectious Diseases and Shenzhen Key Laboratory for Endogenous Infections, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen Nanshan People's Hospital and the Sixth Affiliated Hospital of Shenzhen University Medical School, Shenzhen 518052, China
- Laboratory of Respiratory Disease, People's Hospital of Yangjiang, Yangjiang 529500, China
| | - Shiqing Han
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Zhijian Yu
- Department of Infectious Diseases and Shenzhen Key Laboratory for Endogenous Infections, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen Nanshan People's Hospital and the Sixth Affiliated Hospital of Shenzhen University Medical School, Shenzhen 518052, China
| |
Collapse
|