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Meng W, Liu C, Wu G, Bai Z, Wang Z, Chen S, Wan S, Liu W. Design, synthesis and antibacterial activity evaluation of ebselen derivatives in NDM-1 producing bacteria. RSC Med Chem 2024; 15:1959-1972. [PMID: 38903944 PMCID: PMC11107446 DOI: 10.1039/d4md00031e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 03/10/2024] [Indexed: 06/22/2024] Open
Abstract
New Delhi-β-lactamase-1 (NDM-1) is a type of metal-β-lactamase. NDM-1-expressing bacteria can spread rapidly across the globe via plasmid transfer, which greatly undermines the clinical efficacy of the carbapenem. Research on NDM-1 inhibitors has attracted extensive attention. However, there are currently no clinically available NDM-1 inhibitors. Our research group has reported that 1,2-benzisoselenazol-3(2H)-one derivatives as covalent NDM-1 inhibitors can restore the efficacy of meropenem (Mem) against NDM-1 producing strains. In this study, 22 compounds were designed and synthesized, which restored the Mem susceptibility of NDM-1-expressing Escherichia coli. and its minimum inhibitory concentration (MIC) was reduced by 2-16 times. Representative compound A4 showed significant synergistic antibacterial activity against NDM-1-producing carbapenem-resistant Enterobacteriaceae (CRE) isolates. The in vitro NDM-1 enzyme inhibitory activity test showed that the IC50 was 1.26 ± 0.37 μM, which had low cytotoxicity. When combined with meropenem, it showed good combined antibacterial activity. Electrospray ionization mass spectrometry (ESI-MS) analysis demonstrates that compound A4 covalently binds to NDM-1 enzyme. In summary, compound A4 is a potent NDM-1 covalent inhibitor and provides a potential lead compound for drug development in resistant bacteria.
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Affiliation(s)
- Wanli Meng
- Key Laboratory of Marine Pharmacology, Ministry of Education, College of Medicine, Ocean University of China Qingdao 266003 China
| | - Chenyu Liu
- Faculty of Science, Hong Kong Polytechnic University Kowloon 100872 Hong Kong China
| | - Guangxin Wu
- Key Laboratory of Marine Pharmacology, Ministry of Education, College of Medicine, Ocean University of China Qingdao 266003 China
| | - Zhongyue Bai
- Key Laboratory of Marine Pharmacology, Ministry of Education, College of Medicine, Ocean University of China Qingdao 266003 China
| | - Zhihao Wang
- Key Laboratory of Marine Pharmacology, Ministry of Education, College of Medicine, Ocean University of China Qingdao 266003 China
| | - Sheng Chen
- Faculty of Science, Hong Kong Polytechnic University Kowloon 100872 Hong Kong China
| | - Shengbiao Wan
- Key Laboratory of Marine Pharmacology, Ministry of Education, College of Medicine, Ocean University of China Qingdao 266003 China
| | - Wandong Liu
- Key Laboratory of Marine Pharmacology, Ministry of Education, College of Medicine, Ocean University of China Qingdao 266003 China
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2
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Chen Z, Yang S, Zhao Z, Feng L, Sheng J, Deng R, Wang B, He Y, Luo D, Chen M, Chen L, Chang K. Smart Tumor Cell-Derived DNA Nano-Tree Assembly for On-Demand Macrophages Reprogramming. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2307188. [PMID: 38145350 PMCID: PMC10933644 DOI: 10.1002/advs.202307188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 12/07/2023] [Indexed: 12/26/2023]
Abstract
Without coordinated strategies to balance the population and activity of tumor cells and polarized macrophages, antitumor immunotherapy generally offers limited clinical benefits. Inspired by the "eat me" signal, a smart tumor cell-derived proximity anchored non-linear hybridization chain reaction (Panel-HCR) strategy is established for on-demand regulation of tumor-associated macrophages (TAMs). The Panel-HCR is composed of a recognition-then-assembly module and a release-then-regulation module. Upon recognizing tumor cells, a DNA nano-tree is assembled on the tumor cell surface and byproduct strands loaded with CpG oligodeoxynucleotides (CpG-ODNs) are released depending on the tumor cell concentration. The on-demand release of CpG-ODNs can achieve efficient regulation of M2 TAMs into the M1 phenotype. Throughout the recognition-then-assembly process, tumor cell-targeted bioimaging is implemented in single cells, fixed tissues, and living mice. Afterward, the on-demand release of CpG-ODNs regulate the transformation of M2 TAMs into the M1 phenotype by stimulating toll-like receptor 9 to activate the NF-κB pathway and increasing inflammatory cytokines. This release-then-regulation process is verified to induce strong antitumor immune responses both in vitro and in vivo. Altogether, this proposed strategy holds tremendous promise for on-demand antitumor immunotherapy.
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Affiliation(s)
- Zhiguo Chen
- Department of Clinical Laboratory Medicine, Southwest HospitalArmy Medical University (Third Military Medical University)30 Gaotanyan, Shapingba DistrictChongqing400038China
- Department of Gastroenterology, Southwest HospitalArmy Medical University (Third Military Medical University)30 Gaotanyan, Shapingba DistrictChongqing400038China
| | - Sha Yang
- Department of Clinical Laboratory Medicine, Southwest HospitalArmy Medical University (Third Military Medical University)30 Gaotanyan, Shapingba DistrictChongqing400038China
| | - Zhuyang Zhao
- Department of Clinical Laboratory Medicine, Southwest HospitalArmy Medical University (Third Military Medical University)30 Gaotanyan, Shapingba DistrictChongqing400038China
| | - Liu Feng
- Department of Clinical Laboratory Medicine, Southwest HospitalArmy Medical University (Third Military Medical University)30 Gaotanyan, Shapingba DistrictChongqing400038China
| | - Jing Sheng
- Department of Clinical Laboratory Medicine, Southwest HospitalArmy Medical University (Third Military Medical University)30 Gaotanyan, Shapingba DistrictChongqing400038China
| | - Ruijia Deng
- Department of Clinical Laboratory Medicine, Southwest HospitalArmy Medical University (Third Military Medical University)30 Gaotanyan, Shapingba DistrictChongqing400038China
| | - Binpan Wang
- Department of Clinical Laboratory Medicine, Southwest HospitalArmy Medical University (Third Military Medical University)30 Gaotanyan, Shapingba DistrictChongqing400038China
| | - Yuan He
- Department of Clinical Laboratory Medicine, Southwest HospitalArmy Medical University (Third Military Medical University)30 Gaotanyan, Shapingba DistrictChongqing400038China
| | - Dan Luo
- Department of Biological and Environmental EngineeringCornell UniversityIthacaNY14853‐5701USA
| | - Ming Chen
- Department of Clinical Laboratory Medicine, Southwest HospitalArmy Medical University (Third Military Medical University)30 Gaotanyan, Shapingba DistrictChongqing400038China
| | - Lei Chen
- Department of Gastroenterology, Southwest HospitalArmy Medical University (Third Military Medical University)30 Gaotanyan, Shapingba DistrictChongqing400038China
| | - Kai Chang
- Department of Clinical Laboratory Medicine, Southwest HospitalArmy Medical University (Third Military Medical University)30 Gaotanyan, Shapingba DistrictChongqing400038China
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Jin W, Xu C, Dong N, Chen K, Zhang D, Ning J, Li Y, Zhang G, Ke J, Hou A, Chen L, Chen S, Chan KF. Identification of isothiazolones analogues as potent bactericidal agents against antibiotic resistant CRE and MRSA strains. BMC Chem 2023; 17:183. [PMID: 38104171 PMCID: PMC10724953 DOI: 10.1186/s13065-023-01100-3] [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: 05/29/2023] [Accepted: 12/08/2023] [Indexed: 12/19/2023] Open
Abstract
Carbapenem-resistant Enterobacterales (CRE) has emerged as a worldwide spread nosocomial superbug exhibiting antimicrobial resistance (AMR) to all current antibiotics, leaving limited options for treating its infection. To discovery novel antibiotics against CRE, we designed and synthesized a series of 14 isothiazol-3(2H)-one analogues subjected to antibacterial activity evaluation against Escherichia coli (E. coli) BL21 (NDM-1) and clinical strain E. coli HN88 for investigating their structure-activity relationships (SAR). The results suggested that 5-chloroisothiazolone core with an N-(4-chlorophenyl) substitution 5a was the most potent antibacterial activity against the E. coli BL21 (NDM-1) with MIC value of less than 0.032 μg/mL, which was at least 8000-fold higher than the positive control Meropenem (MRM). It also displayed 2048-fold potent than the positive control MRM against E. coli HN88. Additionally, SAR analysis supported the conclusion that compounds with a chloro-group substituted on the 5-position of the heterocyclic ring was much more potent than other positions. The board spectrum analysis suggested that compound 5a showed a promising antimicrobial activity on MRSA and CRE pathogens. Meanwhile, cytotoxicity study of compound 5a suggested that it had a therapeutic index value of 875, suggesting future therapeutic potential. In vivo efficacy study declared that compound 5a could also protect the BALB/c mice against American type culture collection (ATCC) 43,300. Further screening of our compounds against a collection of CRE strains isolated from patients indicated that compound 5 g displayed much stronger antibacterial activity compared with MRM. In conclusion, our studies indicated that isothiazolones analogues could be potent bactericidal agents against CRE and MRSA pathogens.
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Affiliation(s)
- Wenbin Jin
- Key Laboratory of External Drug Delivery System and Preparation Technology in Universities of Yunnan and Faculty of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, Yunnan, China.
- State Key Laboratory of Chemical Biology and Drug Discovery and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Chen Xu
- State Key Laboratory of Chemical Biology and Drug Discovery and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Ning Dong
- State Key Laboratory of Chemical Biology and Drug Discovery and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
- Department of Medical Microbiology, School of Biology and Basic Medical Sciences, Suzhou Medical College of Soochow University, Suzhou, China
| | - Kaichao Chen
- State Key Laboratory of Chemical Biology and Drug Discovery and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Die Zhang
- Key Laboratory of External Drug Delivery System and Preparation Technology in Universities of Yunnan and Faculty of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, Yunnan, China
| | - Jinhua Ning
- Key Laboratory of External Drug Delivery System and Preparation Technology in Universities of Yunnan and Faculty of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, Yunnan, China
| | - Yunbing Li
- Department of Medical Microbiology, School of Biology and Basic Medical Sciences, Suzhou Medical College of Soochow University, Suzhou, China
| | - Guangfen Zhang
- Department of Medical Microbiology, School of Biology and Basic Medical Sciences, Suzhou Medical College of Soochow University, Suzhou, China
| | - Jin Ke
- Key Laboratory of External Drug Delivery System and Preparation Technology in Universities of Yunnan and Faculty of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, Yunnan, China
| | - Anguo Hou
- Key Laboratory of External Drug Delivery System and Preparation Technology in Universities of Yunnan and Faculty of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, Yunnan, China
| | - Linyun Chen
- Key Laboratory of External Drug Delivery System and Preparation Technology in Universities of Yunnan and Faculty of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, Yunnan, China
| | - Sheng Chen
- Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Kin-Fai Chan
- State Key Laboratory of Chemical Biology and Drug Discovery and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
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4
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Mukhopadhyay S, Zhang P, To KKW, Liu Y, Bai C, Leung SSY. Sequential treatment effects on phage-antibiotic synergistic application against multi-drug-resistant Acinetobacter baumannii. Int J Antimicrob Agents 2023; 62:106951. [PMID: 37574030 DOI: 10.1016/j.ijantimicag.2023.106951] [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: 03/16/2023] [Revised: 07/05/2023] [Accepted: 08/05/2023] [Indexed: 08/15/2023]
Abstract
Bacteriophage (phage) therapy, exploiting phages which are the natural enemies of bacteria, has been re-introduced to treat multidrug-resistant (MDR) bacterial infections. However, some intrinsic drawbacks of phages are overshadowing their clinical use, particularly the narrow host spectrum and rapid emergence of resistance upon treatment. The use of phage-antibiotic combinations exhibiting synergistic bacterial killing [termed 'phage-antibiotic synergy' (PAS)] has therefore been proposed. It is well reported that the types and doses of phages and antibiotics are critical in achieving PAS. However, the impact of treatment order has received less research attention. As such, this study used an Acinetobacter baumannii phage vB_AbaM-IME-AB2 and colistin as a model PAS combination to elucidate the order effects in-vitro. While application of the phage 8 h before colistin treatment demonstrated the greatest antibacterial synergy, it failed to prevent the development of phage resistance. On the other hand, simultaneous application and antibiotic followed by phage application were able to suppress/delay the development of resistance effectively, and simultaneous application demonstrated superior antibacterial and antibiofilm activities. Further in-vivo investigation is required to confirm the impact of treatment order on PAS.
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Affiliation(s)
- Subhankar Mukhopadhyay
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong Special Administrative Region
| | - Pengfei Zhang
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong Special Administrative Region
| | - Kenneth K W To
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong Special Administrative Region
| | - Yannan Liu
- Emergency Medicine Clinical Research Centre, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Changqing Bai
- Department of Respiratory, Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Guangdong, China
| | - Sharon S Y Leung
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong Special Administrative Region.
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5
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Si Z, Pethe K, Chan-Park MB. Chemical Basis of Combination Therapy to Combat Antibiotic Resistance. JACS AU 2023; 3:276-292. [PMID: 36873689 PMCID: PMC9975838 DOI: 10.1021/jacsau.2c00532] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 11/10/2022] [Accepted: 11/10/2022] [Indexed: 06/10/2023]
Abstract
The antimicrobial resistance crisis is a global health issue requiring discovery and development of novel therapeutics. However, conventional screening of natural products or synthetic chemical libraries is uncertain. Combination therapy using approved antibiotics with inhibitors targeting innate resistance mechanisms provides an alternative strategy to develop potent therapeutics. This review discusses the chemical structures of effective β-lactamase inhibitors, outer membrane permeabilizers, and efflux pump inhibitors that act as adjuvant molecules of classical antibiotics. Rational design of the chemical structures of adjuvants will provide methods to impart or restore efficacy to classical antibiotics for inherently antibiotic-resistant bacteria. As many bacteria have multiple resistance pathways, adjuvant molecules simultaneously targeting multiple pathways are promising approaches to combat multidrug-resistant bacterial infections.
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Affiliation(s)
- Zhangyong Si
- School
of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637459
| | - Kevin Pethe
- Lee
Kong Chian School of Medicine, Nanyang Technological
University, Singapore 636921
- Singapore
Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore 637551
| | - Mary B. Chan-Park
- School
of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637459
- Lee
Kong Chian School of Medicine, Nanyang Technological
University, Singapore 636921
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6
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C-terminal modification of a de novo designed antimicrobial peptide via capping of macrolactam rings. Bioorg Chem 2022; 130:106251. [DOI: 10.1016/j.bioorg.2022.106251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 10/20/2022] [Accepted: 11/01/2022] [Indexed: 11/06/2022]
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7
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Yue K, Xu C, Wang Z, Liu W, Liu C, Xu X, Xing Y, Chen S, Li X, Wan S. 1,2-Isoselenazol-3(2H)-one derivatives as NDM-1 inhibitors displaying synergistic antimicrobial effects with meropenem on NDM-1 producing clinical isolates. Bioorg Chem 2022; 129:106153. [DOI: 10.1016/j.bioorg.2022.106153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/16/2022] [Accepted: 09/12/2022] [Indexed: 11/30/2022]
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8
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Synergistic Antimicrobial Effect of Colistin in Combination with Econazole against Multidrug-Resistant Acinetobacter baumannii and Its Persisters. Microbiol Spectr 2022; 10:e0093722. [PMID: 35467374 PMCID: PMC9241926 DOI: 10.1128/spectrum.00937-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Colistin is a last-line antibiotic which acts by causing membrane permeabilization in Gram-negative bacteria. However, its clinical value has been limited by its toxicity and the emergence of resistant organisms. In this study, we showed that econazole and colistin can act synergistically to produce a strong antimicrobial effect sufficient for eradication of starvation-induced tolerant and multidrug-resistant populations of Acinetobacter baumannii, a notorious pathogen causing recalcitrant infections, both in vitro and in mouse infection models. Investigation of the underlying mechanism showed that, while colistin disrupts the membrane structure, econazole causes the dissipation of proton motive force, eliciting a vicious cycle of membrane structural damages and disruption of membrane protein functions, and eventually cell death. This drug combination therefore achieves our goal of using a much smaller dosage of colistin to produce a much stronger antimicrobial effect to tackle the problems of toxicity and resistance associated with colistin usage. IMPORTANCE Findings described in this study constitute concrete evidence that it is possible to significantly enhance the antimicrobial activity of colistin by using an antifungal drug, econazole, as a colistin adjuvant. We showed that this drug combination can kill not only multidrug-resistant A. baumannii but also the tolerant subpopulation of such strains known as persisters, which may cause chronic and recurrent infections in clinical settings. The synergistic killing effect of the econazole and colistin combination was also observable in mouse infection models at a very low concentration, suggesting that such a drug combination has high potential to be used clinically. Findings in this study therefore have important implications for enhancing its clinical application potential as well as developing new approaches to enhance treatment effectiveness and reduce suffering in patients.
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Xu C, Liu C, Chen K, Zeng P, Chan EWC, Chen S. Otilonium bromide boosts antimicrobial activities of colistin against Gram-negative pathogens and their persisters. Commun Biol 2022; 5:613. [PMID: 35729200 PMCID: PMC9213495 DOI: 10.1038/s42003-022-03561-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 06/02/2022] [Indexed: 11/09/2022] Open
Abstract
Colistin is the last-line antibiotic against Gram-negative pathogens. Here we identify an FDA-approved drug, Otilonium bromide (Ob), which restores the activity of colistin against colistin-resistant Gram-negative bacteria in vitro and in a mouse infection model. Ob also reduces the colistin dosage required for effective treatment of infections caused by colistin-susceptible bacteria, thereby reducing the toxicity of the drug regimen. Furthermore, Ob acts synergistically with colistin in eradicating multidrug-tolerant persisters of Gram-negative bacteria in vitro. Functional studies and microscopy assays confirm that the synergistic antimicrobial effect exhibited by the Ob and colistin involves permeabilizing the bacterial cell membrane, dissipating proton motive force and suppressing efflux pumps, resulting in membrane damages, cytosol leakage and eventually bacterial cell death. Our findings suggest that Ob is a colistin adjuvant which can restore the clinical value of colistin in combating life-threatening, multidrug resistant Gram-negative pathogens. The drug otilonium bromide restores the activity of colistin against colistinresistant Gram-negative bacteria in vitro and in a mouse infection model, suggesting that this combination may restore the value of colistin in treatment of antibiotic resistant disease.
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Affiliation(s)
- Chen Xu
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong
| | - Chenyu Liu
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong
| | - Kaichao Chen
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong
| | - Ping Zeng
- State Key Lab of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Edward Wai Chi Chan
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong.,State Key Lab of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Sheng Chen
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong.
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10
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Xu C, Dong N, Chen K, Yang X, Zeng P, Hou C, Chi Chan EW, Yao X, Chen S. Bactericidal, anti-biofilm, and anti-virulence activity of vitamin C against carbapenem-resistant hypervirulent Klebsiella pneumoniae. iScience 2022; 25:103894. [PMID: 35243252 PMCID: PMC8873610 DOI: 10.1016/j.isci.2022.103894] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 12/15/2021] [Accepted: 02/04/2022] [Indexed: 12/27/2022] Open
Affiliation(s)
- Chen Xu
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong
| | - Ning Dong
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong
| | - Kaichao Chen
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong
| | - Xuemei Yang
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong
| | - Ping Zeng
- State Key Lab of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Changshun Hou
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon, Hong Kong
| | - Edward Wai Chi Chan
- State Key Lab of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Xi Yao
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon, Hong Kong
| | - Sheng Chen
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong
- Corresponding author
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11
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Li H, Mattingly AE, Jania LA, Smith R, Melander RJ, Ernst RK, Koller BH, Melander C. Benzimidazole Isosteres of Salicylanilides Are Highly Active Colistin Adjuvants. ACS Infect Dis 2021; 7:3303-3313. [PMID: 34752055 DOI: 10.1021/acsinfecdis.1c00463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Multidrug-resistant bacterial infections have become a global threat. We recently disclosed that the known IKK-β inhibitor IMD-0354 and subsequent analogues abrogate colistin resistance in several Gram-negative strains. Herein, we report the activity of a second-generation library of IMD-0354 analogues incorporating a benzimidazole moiety as an amide isostere. We identified several analogues that show increased colistin potentiation activity against Gram-negative bacteria.
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Affiliation(s)
- Haoting Li
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Anne E. Mattingly
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Leigh A. Jania
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Richard Smith
- Department of Microbial Pathogenesis, University of Maryland-Baltimore, Baltimore, Maryland 21201, United States
| | - Roberta J. Melander
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Robert K. Ernst
- Department of Microbial Pathogenesis, University of Maryland-Baltimore, Baltimore, Maryland 21201, United States
| | - Beverley H. Koller
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Christian Melander
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
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12
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Yi L, Zeng P, Wong KY, Chan KF, Chen S. Controlling Listeria monocytogenes in ready-to-eat leafy greens by amphipathic α-helix peptide zp80 and its antimicrobial mechanisms. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.112412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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13
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Wang M, Chan EWC, Xu C, Chen K, Yang C, Chen S. Econazole as adjuvant to conventional antibiotics is able to eradicate starvation-induced tolerant bacteria by causing proton motive force dissipation. J Antimicrob Chemother 2021; 77:425-432. [PMID: 34747463 DOI: 10.1093/jac/dkab384] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 09/28/2021] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVES Bacterial antibiotic tolerance is responsible for the recalcitrance of chronic infections. This study aims to investigate a potential drug that can effectively kill antibiotic-tolerant bacteria and evaluate the ability of this drug on the eradication of tolerant cells both in vitro and in vivo. METHODS The in vitro effect of econazole on eradicating starvation-induced tolerant bacterial populations was studied by testing the amount of survival bacteria in the presence of econazole combining conventional antibiotics. Proton motive force (PMF) was determined after econazole treatment by DiOC2(3). Finally, mouse infection models were used to detect the ability of econazole on killing the tolerant populations in vivo. RESULTS Econazole eradicated starvation-induced tolerant cells of various bacterial species within 24 or 96 h when used in combination with conventional antibiotics. Moreover, mouse survival rate drastically increased along with the decrease of in vivo bacterial count after treatment of infected mice with the econazole and ceftazidime combination for 72 h. PMF was found to have dissipated almost completely in econazole-treated cells. CONCLUSIONS Econazole could act in combination with conventional antibiotics to effectively eradicate bacterial tolerant cells. The combined use of econazole and ceftazidime was shown to be effective for eradicating tolerant cells in a mouse infection model. The ability of econazole to eradicate tolerant cells was due to its ability to cause dissipation of bacterial transmembrane PMF. Econazole-mediated PMF disruption is a feasible strategy for the treatment of chronic and recurrent bacterial infections.
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Affiliation(s)
- Miaomiao Wang
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong
| | - Edward Wai Chi Chan
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Chen Xu
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong
| | - Kaichao Chen
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong
| | - Chen Yang
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong
| | - Sheng Chen
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong
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Hou C, Xu C, Yi B, Huang X, Cao C, Lee Y, Chen S, Yao X. Mechano-Induced Assembly of a Nanocomposite for "Press-N-Go" Coatings with Highly Efficient Surface Disinfection. ACS APPLIED MATERIALS & INTERFACES 2021; 13:19332-19341. [PMID: 33871976 DOI: 10.1021/acsami.1c03156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Using antimicrobial coatings to control the spread of pathogenic microbes is appreciated in public and healthcare settings, but the performance of most antimicrobial coatings could not fulfill the increasing requirements, particularly the ease of preparation, high durability, rapid response, and high killing efficiency. Herein, we develop a new type of mechano-induced assembly of nanocomposite coating by simple "Press-N-Go" procedures on various substrates such as glassware, gloves, and fabrics, in which the coating shows strong adhesion, high shear stability, and high stiffness, making it durable in daily use to withstand common mechanical deformation and scratches. The coating also shows remarkable disinfection effectiveness over 99.9% to clinically significant multiple drug-resistant bacterial pathogens upon only 6 s near-infrared irradiation, which can be further improved to over 99.9999% upon another 6 s treatment. We envision that the coating can provide convenience and values to control pathogen spread for easily contaminated substrates in high-risk areas.
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Affiliation(s)
- Changshun Hou
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon 999077, P. R. China
| | - Chen Xu
- Department of Infectious Diseases and Public Health, City University of Hong Kong, Kowloon 999077, P. R. China
| | - Bo Yi
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon 999077, P. R. China
| | - Xin Huang
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon 999077, P. R. China
| | - Chunyan Cao
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon 999077, P. R. China
| | - Youngjin Lee
- Department of Neuroscience, City University of Hong Kong, Kowloon 999077, P. R. China
| | - Sheng Chen
- Department of Infectious Diseases and Public Health, City University of Hong Kong, Kowloon 999077, P. R. China
| | - Xi Yao
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon 999077, P. R. China
- Shenzhen Research Institute, City University of Hong Kong, Shenzhen 518075, P. R. China
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