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He J, Lin X, Zhang D, Hu H, Chen X, Xu F, Zhou M. Wake biofilm up to enhance suicidal uptake of gallium for chronic lung infection treatment. Biomaterials 2024; 310:122619. [PMID: 38805955 DOI: 10.1016/j.biomaterials.2024.122619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 05/05/2024] [Accepted: 05/16/2024] [Indexed: 05/30/2024]
Abstract
The hypometabolic and nutrient-limiting condition of dormant bacteria inside biofilms reduces their susceptibility to antibacterial agents, making the treatment of biofilm-dominating chronic infections difficult. Herein, we demonstrate an intratracheal aerosolized maltohexaose-modified catalase-gallium integrated nanosystem that can 'wake up' dormant Pseudomonas aeruginosa biofilm to increase the metabolism and nutritional iron demand by reconciling the oxygen gradient. The activated bacteria then enhance suicidal gallium uptake since gallium acts as a 'Trojan horse' to mimic iron. The internalized gallium ions disrupt biofilms by interfering with the physiological processes of iron ion acquisition and utilization, biofilm formation, and quorum sensing. Furthermore, aerosol microsprayer administration and bacteria-specific maltohexaose modification enable accumulation at biofilm-infected lung and targeted release of gallium into bacteria to improve the therapeutic effect. This work provides a potential strategy for treating infection by reversing the dormant biofilm's resistance condition.
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Affiliation(s)
- Jian He
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, China; Institute of Translational Medicine, Zhejiang University, Hangzhou, 310029, China
| | - Xiuhui Lin
- Department of Infectious Diseases, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, China
| | - Dongxiao Zhang
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, China; Zhejiang University-University of Edinburgh Institute (ZJU-UoE Institute), Zhejiang University School of Medicine, Zhejiang University, Haining, 314400, China
| | - Huiqun Hu
- Department of Infectious Diseases, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, China
| | - Xiaoyuan Chen
- Departments of Diagnostic Radiology, Surgery, Chemical and Biomolecular Engineering, and Biomedical Engineering, Yong Loo Lin School of Medicine and Faculty of Engineering, National University of Singapore, Singapore, 119074, Singapore; Clinical Imaging Research Centre, Centre for Translational Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117599, Singapore; Nanomedicine Translational Research Program, NUS Center for Nanomedicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore; Institute of Molecular and Cell Biology, Agency for Science, Technology, and Research (A*STAR), 61 Biopolis Drive, Proteos, Singapore, 138673, Singapore.
| | - Feng Xu
- Department of Infectious Diseases, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, China.
| | - Min Zhou
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, China; The National Key Laboratory of Biobased Transportation Fuel Technology, Zhejiang University, Hangzhou, 310027, China; Zhejiang University-University of Edinburgh Institute (ZJU-UoE Institute), Zhejiang University School of Medicine, Zhejiang University, Haining, 314400, China; Institute of Translational Medicine, Zhejiang University, Hangzhou, 310029, China.
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Jan H, Ghayas S, Higazy D, Ahmad NM, Yaghmur A, Ciofu O. Antibacterial and anti-biofilm activities of antibiotic-free phosphatidylglycerol/docosahexaenoic acid lamellar and non-lamellar liquid crystalline nanoparticles. J Colloid Interface Sci 2024; 669:537-551. [PMID: 38729002 DOI: 10.1016/j.jcis.2024.04.186] [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: 03/18/2024] [Revised: 04/18/2024] [Accepted: 04/25/2024] [Indexed: 05/12/2024]
Abstract
Infectious diseases, particularly those associated with biofilms, are challenging to treat due to an increased tolerance to commonly used antibiotics. This underscores the urgent need for innovative antimicrobial strategies. Here, we present an alternative simple-by-design approach focusing on the development of biocompatible and antibiotic-free nanocarriers from docosahexaenoic acid (DHA) that has the potential to combat microbial infections and phosphatidylglycerol (DOPG), which is attractive for use as a biocompatible prominent amphiphilic component of Gram-positive bacterial cell membranes. We assessed the anti-bacterial and anti-biofilm activities of these nanoformulations (hexosomes and vesicles) against S. aureus and S. epidermidis, which are the most common causes of infections on catheters and medical devices by different methods (including resazurin assay, time-kill assay, and confocal laser scanning microscopy on an in vitro catheter biofilm model). In a DHA-concentration-dependent manner, these nano-self-assemblies demonstrated strong anti-bacterial and anti-biofilm activities, particularly against S. aureus. A five-fold reduction of the planktonic and a four-fold reduction of biofilm populations of S. aureus were observed after treatment with hexosomes. The nanoparticles had a bacteriostatic effect against S. epidermidis planktonic cells but no anti-biofilm activity was detected. We discuss the findings in terms of nanoparticle-bacterial cell interactions, plausible alterations in the phospholipid membrane composition, and potential penetration of DHA into these membranes, leading to changes in their structural and biophysical properties. The implications for the future development of biocompatible nanocarriers for the delivery of DHA alone or in combination with other anti-bacterial agents are discussed, as novel treatment strategies of Gram-positive infections, including biofilm-associated infections.
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Affiliation(s)
- Habibullah Jan
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen Ø, Denmark
| | - Sana Ghayas
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen Ø, Denmark
| | - Doaa Higazy
- Department of Immunology and Microbiology, Costerton Biofilm Center, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen N, Denmark
| | - Nasir Mahmood Ahmad
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen Ø, Denmark
| | - Anan Yaghmur
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen Ø, Denmark.
| | - Oana Ciofu
- Department of Immunology and Microbiology, Costerton Biofilm Center, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen N, Denmark.
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Yan P, Zhuang S, Li M, Zhang J, Wu S, Xie H, Wu H. Combined environmental pressure induces unique assembly patterns of micro-plastisphere biofilm microbial communities in constructed wetlands. WATER RESEARCH 2024; 260:121958. [PMID: 38896886 DOI: 10.1016/j.watres.2024.121958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 06/09/2024] [Accepted: 06/17/2024] [Indexed: 06/21/2024]
Abstract
The characteristics and dynamics of micro-plastisphere biofilm on the surface of microplastics (MPs) within artificial ecosystems, such as constructed wetlands (CWs), remain unclear, despite these ecosystems' potential to serve as sinks for MPs. This study investigates the dynamic evolution of micro-plastisphere biofilm in CWs, utilizing simulated wastewater containing sulfamethoxazole and humic acid, through physicochemical characterization and metagenomic analysis. Two different types of commercial plastics, including non-degradable polyethylene and degradable polylactic acid, were shredded into MPs and studied. The findings reveal that the types, shape and incubation time of MPs, along with humic acid content in wastewater, affected the quantity and quality of biofilms, such as the biofilm composition, spatial structure and microbial communities. After just 15 days into incubation, numerous microbials were observed on MP samples, with increases in biofilms content and enhanced humification of extracellular polymeric substances over time. Additionally, microbial communities on polylactic acid MPs, or those incubated for longer time, exhibit higher diversity, connectivity and stability, along with reduced vulnerability. Conversely, biofilms on polyethylene MPs were thicker, with higher potential for greenhouse gas emission and increased risk of antibiotic resistance genes. The addition of humic acid demonstrated opposite effects on biofilms across environmental interfaces, possibly due to its dual potential to produce light-induced free radicals and serve as a carbon source. Binning analysis further uncovered a unique assembly pattern of nutrients cycle genes and antibiotic resistance genes, significantly correlated within micro-plastisphere microbial communities, under the combined stress of nutrition and sulfamethoxazole. These results emphasize the shaping of micro-plastisphere biofilm characteristics by unique environmental conditions in artificial ecosystems, and the need to understand how DOM and other pollutants covary with MP pollution.
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Affiliation(s)
- Peihao Yan
- School of Environmental Science & Engineering, Shandong University, Qingdao 266237, PR China
| | - Shuzhen Zhuang
- School of Environmental Science & Engineering, Shandong University, Qingdao 266237, PR China
| | - Mingjun Li
- School of Environmental Science & Engineering, Shandong University, Qingdao 266237, PR China
| | - Jian Zhang
- School of Environmental Science & Engineering, Shandong University, Qingdao 266237, PR China; College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014, PR China.
| | - Shubiao Wu
- Department of Agroecology, Aarhus University, Tjele 8830, Denmark
| | - Huijun Xie
- Environment Research Institute, Shandong University, Qingdao, 266247, PR China
| | - Haiming Wu
- School of Environmental Science & Engineering, Shandong University, Qingdao 266237, PR China.
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Schlafer S, Johnsen KK, Kjærbølling I, Schramm A, Meyer RL, Jørgensen MR. The efficacy and safety of an enzyme-containing lozenge for dental biofilm control-a randomized controlled pilot trial. J Dent 2024; 147:105107. [PMID: 38830531 DOI: 10.1016/j.jdent.2024.105107] [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: 03/17/2024] [Revised: 05/21/2024] [Accepted: 05/31/2024] [Indexed: 06/05/2024] Open
Abstract
OBJECTIVES To evaluate the effect of daily use of a multiple-enzyme lozenge on de novo plaque formation, on gingivitis development, and on the oral microbiome composition. METHODS This trial with two parallel arms included 24 healthy adults allocated to the Active (n = 12) or Placebo (n = 12) group. Subjects consumed one lozenge three times daily for seven days, and no oral hygiene procedures were allowed. Differences in de novo plaque accumulation between a baseline period, and one and seven days of intervention were assessed by the Turesky-modification of the Quigley-and-Hein-Plaque-Index (TM-QHPI). The development of gingivitis after seven days of intervention was assessed by the Gingival Index (GI). Plaque and saliva samples were collected at baseline and after seven days of intervention, and evaluated by 16S rRNA gene sequencing. RESULTS All subjects completed the study, and no adverse events were reported. After one day, the average TM-QHPI was significantly lower in the Active than in the Placebo group, as compared to baseline (p = 0.012). After 7 days, average TM-QHPI values did not differ significantly between groups (p = 0.37). GI values did not increase during the intervention period, with no difference between groups (p = 0.62). Bacterial richness increased in both plaque and saliva samples over a seven-day oral hygiene-free period, with a statistically significant difference for the saliva samples (p = 0.0495) between groups. CONCLUSIONS A multiple-enzymes lozenge decreased the build-up of de novo plaque after one day and slowed down the process of species increment in saliva. The lozenge may be an adjunct to regular mechanical plaque removal. CLINICAL SIGNIFICANCE Dental plaque is the main cause of caries, gingivitis, and periodontitis. The search for therapeutic adjuncts to mechanical plaque removal that have no harmful effects on the oral microbiome is important. Treatment with multiple plaque-matrix degrading enzymes is a promising non-biocidal approach to plaque control.
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Affiliation(s)
- Sebastian Schlafer
- Department of Dentistry and Oral Health, Section for Oral Ecology, Cariology, Faculty of Health, Aarhus University, Aarhus, Denmark.
| | - Karina K Johnsen
- Department of Dentistry and Oral Health, Section for Oral Ecology, Cariology, Faculty of Health, Aarhus University, Aarhus, Denmark
| | | | - Andreas Schramm
- Department of Biology, Section for Microbiology, Aarhus University, Aarhus, Denmark
| | - Rikke L Meyer
- Interdisciplinary Nanoscience Center (iNANO), Faculty of Natural Sciences, Aarhus University, Aarhus, Denmark
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Hameed S, Sharif S, Ovais M, Xiong H. Emerging trends and future challenges of advanced 2D nanomaterials for combating bacterial resistance. Bioact Mater 2024; 38:225-257. [PMID: 38745587 PMCID: PMC11090881 DOI: 10.1016/j.bioactmat.2024.04.033] [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] [Received: 03/11/2024] [Revised: 04/25/2024] [Accepted: 04/29/2024] [Indexed: 05/16/2024] Open
Abstract
The number of multi-drug-resistant bacteria has increased over the last few decades, which has caused a detrimental impact on public health worldwide. In resolving antibiotic resistance development among different bacterial communities, new antimicrobial agents and nanoparticle-based strategies need to be designed foreseeing the slow discovery of new functioning antibiotics. Advanced research studies have revealed the significant disinfection potential of two-dimensional nanomaterials (2D NMs) to be severed as effective antibacterial agents due to their unique physicochemical properties. This review covers the current research progress of 2D NMs-based antibacterial strategies based on an inclusive explanation of 2D NMs' impact as antibacterial agents, including a detailed introduction to each possible well-known antibacterial mechanism. The impact of the physicochemical properties of 2D NMs on their antibacterial activities has been deliberated while explaining the toxic effects of 2D NMs and discussing their biomedical significance, dysbiosis, and cellular nanotoxicity. Adding to the challenges, we also discussed the major issues regarding the current quality and availability of nanotoxicity data. However, smart advancements are required to fabricate biocompatible 2D antibacterial NMs and exploit their potential to combat bacterial resistance clinically.
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Affiliation(s)
- Saima Hameed
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, PR China
- School of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, PR China
| | - Sumaira Sharif
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Lahore, Pakistan
| | - Muhammad Ovais
- BGI Genomics, BGI Shenzhen, Shenzhen, 518083, Guangdong, PR China
| | - Hai Xiong
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, PR China
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Xiao J, Guo Z, Lv G, Yan Z, Liu T, Wang Y, Liu H, Martínez J, Yin L, Liu X, Jiang H, Weizmann Y, Wang X. Neutrophil Extracellular Traps-Inspired Bismuth-Based Polypeptide Nanonets for Synergetic Treatment of Bacterial Infections. Adv Healthc Mater 2024:e2401993. [PMID: 39072961 DOI: 10.1002/adhm.202401993] [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: 05/30/2024] [Indexed: 07/30/2024]
Abstract
Excessive use of antibiotics and the formation of bacterial biofilms can lead to persistent infections caused by drug-resistant bacteria, rendering ineffective immune responses and even life-threatening. There is an urgent need to explore synergistic antibacterial therapies across all stages of infection. Drawing inspiration from the antibacterial properties of neutrophil extracellular traps (NETs) and integrating the bacterial biofilm dispersal mechanism involving boronic acid-catechol interaction, the multifunctional bismuth-based polypeptide nanonets (PLBA-Bi-Fe-TA) are developed. These nanonets are designed to capture bacteria through a coordination complex involving cationic polypeptides (PLBA) with boronic acid-functionalized side chains, alongside metal ions (bismuth (Bi) and iron (Fe)), and tannic acid (TA). Leveraging the nanoconfinement-enhanced high-contact network-driven multiple efficiency, PLBA-Bi-Fe-TA demonstrates the excellent ability to swiftly capture bacteria and their extracellular polysaccharides. This interaction culminates in the formation of a highly hydrophilic complex, effectively enabling the rapid inhibition and dispersion of antibiotic-resistant bacterial biofilms, while Fe-TA shows mild photothermal ability to further assist fluffy mature biofilm. In addition, Bi is beneficial to regulate the polarization of macrophages to pro-inflammatory phenotype to further kill escaping biofilm bacteria. In summary, this novel approach offers a promising bionic optimization strategy for treating bacterial-associated infections at all stages through synergetic treatment.
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Affiliation(s)
- Jiang Xiao
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Zengchao Guo
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Gang Lv
- Mathematics and Physics Department, North China electronic Power University, Baoding, 210096, China
| | - Zhihong Yan
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Tengfei Liu
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Yihan Wang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Hao Liu
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Jesús Martínez
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Lihong Yin
- School of Public Health, Southeast University, Nanjing, 210009, China
| | - Xiaohui Liu
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Hui Jiang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Yossi Weizmann
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva, 8410501, Israel
| | - Xuemei Wang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
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Wu L, Li L, Qiao L, Li C, Zhang S, Yin X, Du Z, Sun Y, Qiu J, Chang X, Wang B, Hua Z. Programmable Bacteria with Dynamic Virulence Modulation System for Precision Antitumor Immunity. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2404069. [PMID: 39058336 DOI: 10.1002/advs.202404069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 07/11/2024] [Indexed: 07/28/2024]
Abstract
Engineered bacteria-mediated antitumor approaches have been proposed as promising immunotherapies for cancer. However, the off-target bacterial toxicity narrows the therapeutic window. Living microbes will benefit from their controllable immunogenicity within tumors for safer antitumor applications. In this study, a genetically encoded microbial activation strategy is reported that uses tunable and dynamic expression of surface extracellular polysaccharides to improve bacterial biocompatibility while retaining therapeutic efficacy. Based on screening of genes associated with Salmonella survival in macrophages, a novel attenuated Salmonella chassis strain AIS (htrA gene-deficient) highly enriched in tumors after administration and rapidly cleared from normal organs are reported. Subsequently, an engineered bacterial strain, AISI-H, is constructed based on the AIS strain and an optimized quorum-sensing regulatory system. The AISI-H strain can achieve recovery of dynamic tumor-specific bacterial virulence through a novel HTRA-RCSA axis-based and quorum-sensing synthetic gene circuit-mediated increase in extracellular polysaccharide content. These strains act "off" in normal organs to avoid unwanted immune activation and "on" in tumors for precise tumor suppression in mice. The AISI-H strain shows significant tumor inhibition and potent activation of anticancer immunity in a melanoma mouse model. The AISI-H strain exhibits excellent biocompatibility. This bacterial regulation strategy expands the applications of microbe-based antitumor therapeutics.
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Affiliation(s)
- Leyang Wu
- Department of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing, Jiangsu, 21008, P. R. China
- Nanjing Generecom Biotechnology Co., Ltd., Nanjing, Jiangsu, 210023, P. R. China
- Changzhou High-Tech Research Institute of Nanjing University and Jiangsu TargetPharma Laboratories, Inc., Changzhou, Jiangsu, 213164, P. R. China
| | - Lin Li
- Department of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing, Jiangsu, 21008, P. R. China
| | - Liyuan Qiao
- Department of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing, Jiangsu, 21008, P. R. China
| | - Chenyang Li
- Department of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing, Jiangsu, 21008, P. R. China
| | - Shuhui Zhang
- Department of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing, Jiangsu, 21008, P. R. China
| | - Xingpeng Yin
- Department of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing, Jiangsu, 21008, P. R. China
| | - Zengzheng Du
- Department of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing, Jiangsu, 21008, P. R. China
| | - Ying Sun
- Department of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing, Jiangsu, 21008, P. R. China
| | - Jiahui Qiu
- Department of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing, Jiangsu, 21008, P. R. China
| | - Xiaoyao Chang
- Department of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing, Jiangsu, 21008, P. R. China
| | - Bohao Wang
- Department of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing, Jiangsu, 21008, P. R. China
| | - Zichun Hua
- Department of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing, Jiangsu, 21008, P. R. China
- Nanjing Generecom Biotechnology Co., Ltd., Nanjing, Jiangsu, 210023, P. R. China
- Changzhou High-Tech Research Institute of Nanjing University and Jiangsu TargetPharma Laboratories, Inc., Changzhou, Jiangsu, 213164, P. R. China
- Faculty of Pharmaceutical Sciences, Xinxiang Medical University, Xinxiang, Henan, 453002, P. R. China
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Park J, Xiang Z, Liu Y, Li CH, Chen C, Nagaraj H, Nguyen T, Nabawy A, Koo H, Rotello VM. Surface-Charge Tuned Polymeric Nanoemulsions for Carvacrol Delivery in Interkingdom Biofilms. ACS APPLIED MATERIALS & INTERFACES 2024; 16:37613-37622. [PMID: 39007413 DOI: 10.1021/acsami.4c06618] [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: 07/16/2024]
Abstract
Biofilms, intricate microbial communities entrenched in extracellular polymeric substance (EPS) matrices, pose formidable challenges in infectious disease treatment, especially in the context of interkingdom biofilms prevalent in the oral environment. This study investigates the potential of carvacrol-loaded biodegradable nanoemulsions (NEs) with systematically varied surface charges─cationic guanidinium (GMT-NE) and anionic carboxylate (CMT-NE). Zeta potentials of +25 mV (GMT-NE) and -33 mV (CMT-NE) underscore successful nanoemulsion fabrication (∼250 nm). Fluorescent labeling and dynamic tracking across three dimensions expose GMT-NE's superior diffusion into oral biofilms, yielding a robust antimicrobial effect with 99.99% killing for both streptococcal and Candida species and marked reductions in bacterial cell viability compared to CMT-NE (∼4-log reduction). Oral mucosa tissue cultures affirm the biocompatibility of both NEs with no morphological or structural changes, showcasing their potential for combating intractable biofilm infections in oral environment. This study advances our understanding of NE surface charges and their interactions within interkingdom biofilms, providing insights crucial for addressing complex infections involving bacteria and fungi in the demanding oral context.
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Affiliation(s)
- Jungmi Park
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Zhenting Xiang
- Biofilm Research Laboratories, Levy Center for Oral Health, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, 240 S 40th Street, Philadelphia, Pennsylvania 19104, United States
| | - Yuan Liu
- Biofilm Research Laboratories, Levy Center for Oral Health, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Preventive and Restorative Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Cheng-Hsuan Li
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Chider Chen
- Department of Oral and Maxillofacial Surgery and Pharmacology, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Harini Nagaraj
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Tiffany Nguyen
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Ahmed Nabawy
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Hyun Koo
- Biofilm Research Laboratories, Levy Center for Oral Health, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, 240 S 40th Street, Philadelphia, Pennsylvania 19104, United States
- Center for Innovation and Precision Dentistry, School of Dental Medicine, School of Engineering and Applied Sciences, University of Pennsylvania, 240 S 40th Street, Philadelphia, Pennsylvania 19104, United States
- Department of Bioengineering, School of Engineering and Applied Sciences, University of Pennsylvania, 210 S 33rd Street, Philadelphia, Pennsylvania 19104, United States
| | - Vincent M Rotello
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
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9
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Ao J, Zhang X, You Y, Chen Y, Liu Z, Gao J, Qin C, Hao L, Zhao J, Jiang R. Bioinspired Hybrid Nanostructured PEEK Implant with Enhanced Antibacterial and Anti-inflammatory Synergy. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 39034661 DOI: 10.1021/acsami.4c06322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Abstract
Implant-associated infections and excessive immune responses are two major postsurgical issues for successful implantation. However, conventional strategies including antibiotic treatment and inflammatory regulation are always compromised due to the comodification of various biochemical agents and instances of functional interference. It is imperative to provide implant surfaces with satisfactory antibacterial and anti-inflammatory properties. Here, a dual-effect nanostructured polyetheretherketone (PEEK) surface (NP@PDA/Zn) with bionic mechano-bactericidal nanopillars and immobilized immunomodulatory Zn2+ is designed. The constructed hybrid nanopillars display remarkable antibacterial performance against Gram-negative and Gram-positive strains through the synergy of physical and chemical bactericidal effects imposed by nanopillars and Zn2+. Meanwhile, the immunoregulatory property is evaluated through the investigation of macrophage polarization both in vitro and in vivo, and the results reveal that NP@PDA/Zn could downregulate the expression of M1-related cytokines and decrease the M1 macrophage recruitment to lower the inflammatory response. Notably, the surface exhibited exceptional biocompatibility with discerning biocidal activity between bacterial and mammalian cells and antioxidant performance that effectively scavenges ROS, minimizing potential cytotoxicity. Taken together, NP@PDA/Zn presents a convenient and promising strategy of combining synergistic bactericidal activity and inflammatory regulation without any mutual interference, which can support the development of multifunctional implant-associated materials.
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Affiliation(s)
- Ji Ao
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
| | - Xin Zhang
- School of Chemistry and Pharmaceutical Engineering, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250117, China
- College of Chemistry, Jilin University, Changchun 130022, China
| | - Yunhao You
- Department of Spine Surgery, Qilu Hospital of Shandong University, Jinan 250012 China
| | - Yuxiang Chen
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
- Department of Mechanical Engineering, The University of Hong Kong, SAR, Hong Kong 999077, China
| | - Zequan Liu
- School of Chemistry and Pharmaceutical Engineering, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250117, China
| | - Jie Gao
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
| | - Chenyang Qin
- School of Chemistry and Pharmaceutical Engineering, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250117, China
| | - Lingwan Hao
- School of Chemistry and Pharmaceutical Engineering, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250117, China
| | - Jie Zhao
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
| | - Rujian Jiang
- School of Chemistry and Pharmaceutical Engineering, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250117, China
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10
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Gil-Miranda A, Macnicol J, Orellana-Guerrero D, Samper JC, Gomez DE. Reproductive Tract Microbiota of Mares. Vet Sci 2024; 11:324. [PMID: 39058008 PMCID: PMC11281493 DOI: 10.3390/vetsci11070324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2024] [Revised: 06/29/2024] [Accepted: 07/09/2024] [Indexed: 07/28/2024] Open
Abstract
The female reproductive tract microbiota is a complex community of microorganisms that might be crucial in maintaining a healthy reproductive environment. Imbalances in the bacterial community (dysbiosis) and the reduction of beneficial organisms and pathogen proliferation are associated with disease. Endometritis is a common cause of fertility problems in mares, and it is still challenging to diagnose and treat based on routine culture results of certain microorganisms. Although high-throughput sequencing studies provide helpful information regarding the composition of the reproductive tract microbiota in mares, there are still challenges in defining a "normal" microbiota. The primary objective of this literature review is to summarize the current knowledge regarding the microbiota present in the reproductive tract of mares, including the vagina, cervix, and uterus. The second objective is to describe the relevant factors that can impact the reproductive microbiota of mares, including the estrous cycle stage, the type of species (genera) investigated, season, and geographic location. The rationality of identifying the normal microbiota in the reproductive tract of a mare will likely aid in understanding the impact of the microbiota on the host's reproductive health and contribute to the treatment and prevention of equine sub and infertility issues.
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Affiliation(s)
- Ana Gil-Miranda
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada; (A.G.-M.); (J.M.)
| | - Jennifer Macnicol
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada; (A.G.-M.); (J.M.)
| | | | - Juan C. Samper
- Department of Large Animal Clinical Sciences, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843-4475, USA;
| | - Diego E. Gomez
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada; (A.G.-M.); (J.M.)
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11
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Carvalho FS, Tarabal VS, Livio DF, Cruz LF, Monteiro APF, Parreira AG, Guimarães PPG, Scheuerman K, Chagas RCR, da Silva JA, Gonçalves DB, Granjeiro JM, Sinisterra RD, Segura MEC, Granjeiro PA. Production and characterization of the lipopeptide with anti-adhesion for oral biofilm on the surface of titanium for dental implants. Arch Microbiol 2024; 206:354. [PMID: 39017726 DOI: 10.1007/s00203-024-04078-1] [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: 04/24/2024] [Accepted: 07/02/2024] [Indexed: 07/18/2024]
Abstract
Titanium implants are subject to bacterial adhesion and peri-implantitis induction, and biosurfactants bring a new alternative to the fight against infections. This work aimed to produce and characterize the biosurfactant from Bacillus subtilis ATCC 19,659, its anti-adhesion and antimicrobial activity, and cell viability. Anti-adhesion studies were carried out against Streptococcus sanguinis, Staphylococcus aureus, Fusobacterium nucleatum, Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, and Proteus mirabilis as the minimum inhibitory concentration and the minimum bactericidal concentration. Cell viability was measured against osteoblast and fibroblast cells. The biosurfactant was classified as lipopeptide, with critical micelle concentration at 40 µg mL- 1, and made the titanium surface less hydrophobic. The anti-adhesion effect was observed for Staphylococcus aureus and Streptococcus sanguinis with 54% growth inhibition and presented a minimum inhibitory concentration of 15.7 µg mL- 1 for Streptococcus sanguinis and Aggregatibacter actinomycetemcomitans. The lipopeptide had no cytotoxic effect and demonstrated high potential application against bacterial biofilms.
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Affiliation(s)
- Fernanda Souza Carvalho
- Biotechnological Processes and Macromolecules Purification Laboratory, Campus Centro Oeste, Federal University of São João del-Rei, Divinópolis, MG, 35501-296, Brazil
| | - Vinícius Souza Tarabal
- Biotechnological Processes and Macromolecules Purification Laboratory, Campus Centro Oeste, Federal University of São João del-Rei, Divinópolis, MG, 35501-296, Brazil
| | - Diego Fernandes Livio
- Biotechnological Processes and Macromolecules Purification Laboratory, Campus Centro Oeste, Federal University of São João del-Rei, Divinópolis, MG, 35501-296, Brazil
| | - Luísa F Cruz
- Biotechnological Processes and Macromolecules Purification Laboratory, Campus Centro Oeste, Federal University of São João del-Rei, Divinópolis, MG, 35501-296, Brazil
| | - Ana P F Monteiro
- Chemistry Department, Federal University of Minas Gerais, Presidente Antônio Carlos Ave., 6627, Belo Horizonte, MG, 31270901, Brazil
| | - Adriano Guimarães Parreira
- Microbiology Laboratory, State University of Minas Gerais, Paraná Ave., 3001, Divinópolis, MG, 35501-179, Brazil
| | - Pedro P G Guimarães
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Presidente Antônio Carlos Ave., 6627, Belo Horizonte, MG, 31270901, Brazil
| | - Karina Scheuerman
- Restorative Dentistry Department, Faculty of Dentistry, Federal University of Minas Gerais, Presidente Antônio Carlos Ave., 6627, Belo Horizonte, MG, 31270901, Brazil
| | - Rafael Cesar Russo Chagas
- Laboratory of Bioactive and Catalytic Compounds, Federal University of São João Del-Rei, Campus Centro Oeste, Sebastião Gonçalves Coelho St., 400, Divinópolis, MG, 35501-296, Brazil
| | - José Antônio da Silva
- Biotechnological Processes and Macromolecules Purification Laboratory, Campus Centro Oeste, Federal University of São João del-Rei, Divinópolis, MG, 35501-296, Brazil
| | - Daniel Bonoto Gonçalves
- Department of Biosystems Engineering, Federal University of São João del-Rei, Campus Dom Bosco, Padre João Pimentel St., 80, São João del Rei, MG, 36301-158, Brazil
| | - José Mauro Granjeiro
- Bioengineering Laboratory, National Institute of Metrology, Quality and Technology, Nossa Senhora das Graças Ave., 50, Duque de Caxias, RJ, 25250020, Brazil
- Dental Clinical Research, Dentistry School, Fluminense Federal University, Mario Santos Braga St., 28, Niterói, RJ, 24020140, Brazil
| | - Ruben Dario Sinisterra
- Chemistry Department, Federal University of Minas Gerais, Presidente Antônio Carlos Ave., 6627, Belo Horizonte, MG, 31270901, Brazil
| | - Maria E C Segura
- Restorative Dentistry Department, Faculty of Dentistry, Federal University of Minas Gerais, Presidente Antônio Carlos Ave., 6627, Belo Horizonte, MG, 31270901, Brazil
| | - Paulo Afonso Granjeiro
- Biotechnological Processes and Macromolecules Purification Laboratory, Campus Centro Oeste, Federal University of São João del-Rei, Divinópolis, MG, 35501-296, Brazil.
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12
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Li L, Xie Y, Wang J, Sun Q, Gao M, Li C. Biofilm microenvironment-activated multimodal therapy nanoplatform for effective anti-bacterial treatment and wound healing. Acta Biomater 2024; 183:221-234. [PMID: 38849021 DOI: 10.1016/j.actbio.2024.06.002] [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: 03/05/2024] [Revised: 05/30/2024] [Accepted: 06/03/2024] [Indexed: 06/09/2024]
Abstract
Antimicrobial drug development faces challenges from bacterial resistance, biofilms, and excessive inflammation. Here, we design an intelligent nanoplatform utilizing mesoporous silica nanoparticles doped with copper ions for loading copper sulfide (DM/Cu2+-CuS). The mesoporous silica doped with tetrasulfide bonds responds to the biofilm microenvironment (BME), releasing Cu2+ions, CuS along with hydrogen sulfide (H2S) gas. The release of hydrogen sulfide within 72 h reached 793.5 µM, significantly higher than that observed with conventional small molecule donors. H2S induces macrophages polarization towards the M2 phenotype, reducing inflammation and synergistically accelerating endothelial cell proliferation and migration with Cu2+ions. In addition, H2S disrupts extracellular DNA within biofilms, synergistically photothermal enhanced peroxidase-like activity of CuS to effectively eradicate biofilms. Remarkably, DM-mediated consumption of endogenous glutathione enhances the anti-biofilm activity of H2S and improves oxygen species (ROS) destruction efficiency. The combination of photothermal therapy (PTT), chemodynamic therapy (CDT), and gas treatment achieves sterilization rates of 99.3 % and 99.6 % against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli), respectively, in vitro under 808 nm laser irradiation. Additionally, in vivo experiments demonstrate a significant biosafety and antibacterial potential. In summary, the H2S donor developed in this study exhibits enhanced biocompatibility and controlled release properties. By integrating BME-responsive gas therapy with antibacterial ions, PTT and CDT, a synergistic multimodal strategy is proposed to offer new therapeutic approaches for wound healing. STATEMENT OF SIGNIFICANCE: The advanced DMOS/Cu2+-CuS (DMCC) multimodal therapeutic nanoplatform has been developed for the treatment of drug-resistant bacterial wound infections and has exhibited enhanced therapeutic efficacy through the synergistic effects of photothermal therapy, chemodynamic therapy, Cu2+ions, and H2S. The DMCC exhibited exceptional biocompatibility and could release CuS, Cu2+, and H2S in response to elevated concentrations of glutathione within the biofilm microenvironment. H2S effectively disrupted the biofilm structure. Meanwhile, peroxidase activity of CuS combined with GSH-mediated reduction of Cu2+ to Cu+ generated abundant hydroxyl radicals under acidic conditions, leading to efficient eradication of pathogenic bacteria. Furthermore, both H2S and Cu2+ could modulate M2 macrophages polarization and regulate immune microenvironment dynamics. These strategies collectively provided a novel approach for developing antibacterial nanomedical platforms.
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Affiliation(s)
- Lei Li
- Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, PR China
| | - Yulin Xie
- Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, PR China
| | - Junrong Wang
- Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, PR China
| | - Qianqian Sun
- Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, PR China
| | - Minghong Gao
- Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, PR China.
| | - Chunxia Li
- Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, PR China.
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13
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Jandl B, Dighe S, Gasche C, Makristathis A, Muttenthaler M. Intestinal biofilms: pathophysiological relevance, host defense, and therapeutic opportunities. Clin Microbiol Rev 2024:e0013323. [PMID: 38995034 DOI: 10.1128/cmr.00133-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2024] Open
Abstract
SUMMARYThe human intestinal tract harbors a profound variety of microorganisms that live in symbiosis with the host and each other. It is a complex and highly dynamic environment whose homeostasis directly relates to human health. Dysbiosis of the gut microbiota and polymicrobial biofilms have been associated with gastrointestinal diseases, including irritable bowel syndrome, inflammatory bowel diseases, and colorectal cancers. This review covers the molecular composition and organization of intestinal biofilms, mechanistic aspects of biofilm signaling networks for bacterial communication and behavior, and synergistic effects in polymicrobial biofilms. It further describes the clinical relevance and diseases associated with gut biofilms, the role of biofilms in antimicrobial resistance, and the intestinal host defense system and therapeutic strategies counteracting biofilms. Taken together, this review summarizes the latest knowledge and research on intestinal biofilms and their role in gut disorders and provides directions toward the development of biofilm-specific treatments.
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Affiliation(s)
- Bernhard Jandl
- Faculty of Chemistry, Institute of Biological Chemistry, University of Vienna, Vienna, Austria
- Vienna Doctoral School in Chemistry (DoSChem), University of Vienna, Vienna, Austria
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
| | - Satish Dighe
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
| | - Christoph Gasche
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna, Austria
- Loha for Life, Center for Gastroenterology and Iron Deficiency, Vienna, Austria
| | - Athanasios Makristathis
- Department of Laboratory Medicine, Division of Clinical Microbiology, Medical University of Vienna, Vienna, Austria
| | - Markus Muttenthaler
- Faculty of Chemistry, Institute of Biological Chemistry, University of Vienna, Vienna, Austria
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
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14
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Wang L, Liu P, Wu Y, Pei H, Cao X. Inhibitory effect of Lonicera japonica flos on Streptococcus mutans biofilm and mechanism exploration through metabolomic and transcriptomic analyses. Front Microbiol 2024; 15:1435503. [PMID: 39027105 PMCID: PMC11256199 DOI: 10.3389/fmicb.2024.1435503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Accepted: 06/05/2024] [Indexed: 07/20/2024] Open
Abstract
Introduction Streptococcus mutans was the primary pathogenic organism responsible for dental caries. Lonicera japonica flos (LJF) is a traditional herb in Asia and Europe and consumed as a tea beverage for thousands of years. Methods The inhibitory effect and mechanism of LJF on biofilm formation by S. mutans was investigated. The active extracts of LJF were validated for their inhibitory activity by examining changes in surface properties such as adherence, hydrophobicity, auto-aggregation abilities, and exopolysaccharides (EPS) production, including water-soluble glucan and water-insoluble glucan. Results and discussion LJF primarily inhibited biofilm formation through the reduction of EPS production, resulting in alterations in cell surface characteristics and growth retardation in biofilm formation cycles. Integrated transcriptomic and untargeted metabolomics analyses revealed that EPS production was modulated through two-component systems (TCS), quorum sensing (QS), and phosphotransferase system (PTS) pathways under LJF stress conditions. The sensing histidine kinase VicK was identified as an important target protein, as LJF caused its dysregulated expression and blocked the sensing of autoinducer II (AI-2). This led to the inhibition of response regulator transcriptional factors, down-regulated glycosyltransferase (Gtf) activity, and decreased production of water-insoluble glucans (WIG) and water-soluble glucans (WSG). This is the first exploration of the inhibitory effect and mechanism of LJF on S. mutans, providing a theoretical basis for the application of LJF in functional food, oral health care, and related areas.
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Affiliation(s)
| | | | | | | | - Xueli Cao
- Beijing Technology and Business University, Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Beijing, China
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15
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Spoelstra GB, Blok SN, Reali Nazario L, Noord L, Fu Y, Simeth NA, IJpma FFA, van Oosten M, van Dijl JM, Feringa BL, Szymanski W, Elsinga PH. Synthesis and preclinical evaluation of novel 18F-vancomycin-based tracers for the detection of bacterial infections using positron emission tomography. Eur J Nucl Med Mol Imaging 2024; 51:2583-2596. [PMID: 38644432 PMCID: PMC11224109 DOI: 10.1007/s00259-024-06717-7] [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: 01/18/2024] [Accepted: 04/14/2024] [Indexed: 04/23/2024]
Abstract
INTRODUCTION Bacterial infections are a major problem in medicine, and the rapid and accurate detection of such infections is essential for optimal patient outcome. Bacterial infections can be diagnosed by nuclear imaging, but most currently available modalities are unable to discriminate infection from sterile inflammation. Bacteria-targeted positron emission tomography (PET) tracers have the potential to overcome this hurdle. In the present study, we compared three 18F-labelled PET tracers based on the clinically applied antibiotic vancomycin for targeted imaging of Gram-positive bacteria. METHODS [18F]FB-NHS and [18F]BODIPY-FL-NHS were conjugated to vancomycin. The resulting conjugates, together with our previously developed [18F]PQ-VE1-vancomycin, were tested for stability, lipophilicity, selective binding to Gram-positive bacteria, antimicrobial activity and biodistribution. For the first time, the pharmacokinetic properties of all three tracers were compared in healthy animals to identify potential binding sites. RESULTS [18F]FB-vancomycin, [18F]BODIPY-FL-vancomycin, and [18F]PQ-VE1-vancomycin were successfully synthesized with radiochemical yields of 11.7%, 2.6%, and 0.8%, respectively. [18F]FB-vancomycin exhibited poor in vitro and in vivo stability and, accordingly, no bacterial binding. In contrast, [18F]BODIPY-FL-vancomycin and [18F]PQ-VE1-vancomycin showed strong and specific binding to Gram-positive bacteria, including methicillin-resistant Staphylococcus aureus (MRSA), which was outcompeted by unlabeled vancomycin only at concentrations exceeding clinically relevant vancomycin blood levels. Biodistribution showed renal clearance of [18F]PQ-VE1-vancomycin and [18F]BODIPY-FL-vancomycin with low non-specific accumulation in muscles, fat and bones. CONCLUSION Here we present the synthesis and first evaluation of the vancomycin-based PET tracers [18F]BODIPY-FL-vancomycin and [18F]PQ-VE1-vancomycin for image-guided detection of Gram-positive bacteria. Our study paves the way towards real-time bacteria-targeted diagnosis of soft tissue and implant-associated infections that are oftentimes caused by Gram-positive bacteria, even after prophylactic treatment with vancomycin.
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Affiliation(s)
- G B Spoelstra
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Hanzeplein 1, Groningen, 9713GZ, The Netherlands
| | - S N Blok
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Hanzeplein 1, Groningen, 9713GZ, The Netherlands
| | - L Reali Nazario
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Hanzeplein 1, Groningen, 9713GZ, The Netherlands
| | - L Noord
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Hanzeplein 1, Groningen, 9713GZ, The Netherlands
| | - Y Fu
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, Groningen, 9747AG, The Netherlands
| | - N A Simeth
- Institute for Organic and Biomolecular Chemistry, Department of Chemistry, University of Göttingen, Tammannstraβe 2, 37077, Göttingen, Germany
| | - F F A IJpma
- Department of Trauma Surgery, University of Groningen, University Medical Center Groningen, Hanzeplein 1, Groningen, 9713GZ, The Netherlands
| | - M van Oosten
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, Groningen, 9713GZ, The Netherlands
| | - J M van Dijl
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, Groningen, 9713GZ, The Netherlands
| | - B L Feringa
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, Groningen, 9747AG, The Netherlands
| | - W Szymanski
- Department of Radiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, Groningen, 9713GZ, The Netherlands
- Department of Medicinal Chemistry, Photopharmacology and Imaging, University of Groningen, Groningen Research Institute of Pharmacy, Antonius Deusinglaan 1, Groningen, 9713AV, The Netherlands
| | - P H Elsinga
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Hanzeplein 1, Groningen, 9713GZ, The Netherlands.
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16
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Ohmura T, Skinner DJ, Neuhaus K, Choi GPT, Dunkel J, Drescher K. In Vivo Microrheology Reveals Local Elastic and Plastic Responses Inside 3D Bacterial Biofilms. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2314059. [PMID: 38511867 DOI: 10.1002/adma.202314059] [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: 12/22/2023] [Revised: 03/08/2024] [Indexed: 03/22/2024]
Abstract
Bacterial biofilms are highly abundant 3D living materials capable of performing complex biomechanical and biochemical functions, including programmable growth, self-repair, filtration, and bioproduction. Methods to measure internal mechanical properties of biofilms in vivo with spatial resolution on the cellular scale have been lacking. Here, thousands of cells are tracked inside living 3D biofilms of the bacterium Vibrio cholerae during and after the application of shear stress, for a wide range of stress amplitudes, periods, and biofilm sizes, which revealed anisotropic elastic and plastic responses of both cell displacements and cell reorientations. Using cellular tracking to infer parameters of a general mechanical model, spatially-resolved measurements of the elastic modulus inside the biofilm are obtained, which correlate with the spatial distribution of the polysaccharides within the biofilm matrix. The noninvasive microrheology and force-inference approach introduced here provides a general framework for studying mechanical properties with high spatial resolution in living materials.
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Affiliation(s)
- Takuya Ohmura
- Biozentrum, University of Basel, Spitalstrasse 41, Basel, 4056, Switzerland
| | - Dominic J Skinner
- Department of Mathematics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139-4307, USA
- NSF-Simons Center for Quantitative Biology, Northwestern University, Evanston, IL, 60201, USA
| | - Konstantin Neuhaus
- Biozentrum, University of Basel, Spitalstrasse 41, Basel, 4056, Switzerland
- Department of Physics, Philipps-Universität Marburg, Renthof 5, 35032, Marburg, Germany
| | - Gary P T Choi
- Department of Mathematics, The Chinese University of Hong Kong, N.T., Hong Kong
| | - Jörn Dunkel
- Department of Mathematics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139-4307, USA
| | - Knut Drescher
- Biozentrum, University of Basel, Spitalstrasse 41, Basel, 4056, Switzerland
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17
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Babeer A, Bukhari S, Alrehaili R, Karabucak B, Koo H. Microrobotics in endodontics: A perspective. Int Endod J 2024; 57:861-871. [PMID: 38761098 DOI: 10.1111/iej.14082] [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: 12/08/2023] [Revised: 04/28/2024] [Accepted: 04/29/2024] [Indexed: 05/20/2024]
Abstract
Microorganisms are the primary aetiological factor of apical periodontitis. The goal of endodontic treatment is to prevent and eliminate the infection by removing the microorganisms. However, microbial biofilms and the complex root canal anatomy impair the disinfection process. Effective and precise endodontic therapy could potentially be achieved using advanced multifunctional technologies that have the ability to access hard-to-reach surfaces and perform simultaneous biofilm killing, removal, and detection of microorganisms. Advances in microrobotics are providing novel therapeutic and diagnostic opportunities with high precision and efficacy to address current biofilm-related challenges in biomedicine. Concurrently, multifunctional magnetic microrobots have been developed to overcome the disinfection challenges of current approaches to disrupt, kill, and retrieve biofilms with the goal of enhancing the efficacy and precision of endodontic therapy. This article reviews the recent advances of microrobotics in healthcare and particularly advances to overcome disinfection challenges in endodontics, and provides perspectives for future research in the field.
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Affiliation(s)
- Alaa Babeer
- Department of Oral Biology, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
- Department of Endodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Sarah Bukhari
- Department of Endodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Department of Endodontics, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Rayan Alrehaili
- Department of Endodontics, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Bekir Karabucak
- Department of Endodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Hyun Koo
- Biofilm Research Labs, Department of Orthodontics, Divisions of Pediatric Dentistry and Community of Oral Health, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Center for Innovation and Precision Dentistry, School of Dental Medicine, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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18
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Kyei L, Piedl K, Menegatti C, Miller EM, Mevers E. Discovery of Biofilm Inhibitors from the Microbiota of Marine Egg Masses. JOURNAL OF NATURAL PRODUCTS 2024; 87:1635-1642. [PMID: 38814458 PMCID: PMC11217947 DOI: 10.1021/acs.jnatprod.4c00376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 05/14/2024] [Accepted: 05/16/2024] [Indexed: 05/31/2024]
Abstract
Biofilms commonly develop in immunocompromised patients, which leads to persistent infections that are difficult to treat. In the biofilm state, bacteria are protected against both antibiotics and the host's immune system; currently, there are no therapeutics that target biofilms. In this study, we screened a chemical fraction library representing the natural product capacity of the microbiota of marine egg masses, namely, the moon snail egg collars. This led to the identification of active fractions targeting both Pseudomonas aeruginosa and Staphylococcus aureus biofilms. Subsequent analysis revealed that a subset of these fractions were capable of eradicating preformed biofilms, all against S. aureus. Bioassay-guided isolation led us to identify pseudochelin A, a known siderophore, as a S. aureus biofilm inhibitor with an IC50 of 88.5 μM. Mass spectrometry-based metabolomic analyses revealed widespread production of pseudochelin A among fractions possessing S. aureus antibiofilm properties. In addition, a key biosynthetic gene involved in producing pseudochelin A was detected on 30% of the moon snail egg collars and pseudochelin A is capable of inhibiting the formation of biofilms (IC50 50.6 μM) produced by ecologically relevant bacterial strains. We propose that pseudochelin A may have a role in shaping the microbiome or protecting the egg collars from microbiofouling.
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Affiliation(s)
- Lois Kyei
- Department
of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Karla Piedl
- Department
of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Carla Menegatti
- Department
of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Eleanor M. Miller
- Department
of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Emily Mevers
- Department
of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
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19
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Jayaraman S, Rajendhran N, Kannan MA, Ramasamy T. Quercetin disrupts biofilm formation and attenuates virulence of Aeromonas hydrophila. Arch Microbiol 2024; 206:326. [PMID: 38922407 DOI: 10.1007/s00203-024-04034-z] [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: 02/04/2024] [Accepted: 06/05/2024] [Indexed: 06/27/2024]
Abstract
Aeromonas hydrophila poses significant health and economic challenges in aquaculture owing to its pathogenicity and prevalence. Overuse of antibiotics has led to multidrug resistance and environmental pollution, necessitating alternative strategies. This study investigated the antibacterial and antibiofilm potentials of quercetin against A. hydrophila. Efficacy was assessed using various assays, including antibacterial activity, biofilm inhibition, specific growth time, hemolysis inhibition, autoaggregation, and microscopic evaluation. Additionally, docking analysis was performed to explore potential interactions between quercetin and virulence proteins of A. hydrophila, including proaerolysin, chaperone needle-subunit complex of the type III secretion system, and alpha-pore forming toxin (PDB ID: 1PRE, 2Q1K, 6GRK). Quercetin exhibited potent antibacterial activity with 21.1 ± 1.1 mm zone of inhibition at 1.5 mg mL-1. It also demonstrated significant antibiofilm activity, reducing biofilm formation by 46.3 ± 1.3% at the MIC and attenuating autoaggregation by 55.9 ± 1.5%. Hemolysis was inhibited by 41 ± 1.8%. Microscopic analysis revealed the disintegration of the A. hydrophila biofilm matrix. Docking studies indicated active hydrogen bond interactions between quercetin and the targeted virulence proteins with the binding energy -3.2, -5.6, and -5.1 kcal mol⁻1, respectively. These results suggest that quercetin is an excellent alternative to antibiotics for combating A. hydrophila infection in aquaculture. The multifaceted efficacy of quercetin in inhibiting bacterial growth, biofilm formation, virulence factors, and autoaggregation highlights the potential for aquaculture health and sustainability. Future research should delve into the precise mechanisms of action and explore synergistic combinations with other compounds for enhanced efficacy and targeted interventions.
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Affiliation(s)
- Sudharshini Jayaraman
- Laboratory of Aquabiotics/Nanoscience, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, 620024, India
| | - Nandhini Rajendhran
- Laboratory of Aquabiotics/Nanoscience, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, 620024, India
| | - Monika Adhilaxmi Kannan
- Laboratory of Aquabiotics/Nanoscience, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, 620024, India
| | - Thirumurugan Ramasamy
- Laboratory of Aquabiotics/Nanoscience, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, 620024, India.
- Central University of Tamil Nadu, Thiruvarur, Tamil Nadu, 610 005, India.
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Qin M, Zhang X, Ding H, Chen Y, He W, Wei Y, Chen W, Chan YK, Shi Y, Huang D, Deng Y. Engineered Probiotic Bio-Heterojunction with Robust Antibiofilm Modality via "Eating" Extracellular Polymeric Substances for Wound Regeneration. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2402530. [PMID: 38924628 DOI: 10.1002/adma.202402530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 06/14/2024] [Indexed: 06/28/2024]
Abstract
The compact three-dimensional (3D) structure of extracellular polymeric substances (EPS) within biofilms significantly hinders the penetration of antimicrobial agents, making biofilm eradication challenging and resulting in persistent biofilm-associated infections. To address this challenge, a solution is proposed: a probiotic bio-heterojunction (P-bioHJ) combining Lactobacillus rhamnosus with MXene (Ti3C2) quantum dots (MQDs)/FeS heterojunction. This innovation aims to break down the saccharides in EPS, enabling effective combat against biofilm-associated infections. Initially, the P-bioHJ targets saccharides through metabolic processes, causing the collapse of EPS and allowing infiltration into bacterial colonies. Simultaneously, upon exposure to near-infrared (NIR) irradiation, the P-bioHJ produces reactive oxygen species (ROS) and thermal energy, deploying physical mechanisms to combat bacterial biofilms effectively. Following antibiofilm treatment, the P-bioHJ adjusts the oxidative environment, reduces wound inflammation by scavenging ROS, boosts antioxidant enzyme activity, and mitigates the NF-κB inflammatory pathway, thereby accelerating wound healing. In vitro and in vivo experiments confirm the exceptional antibiofilm, antioxidant/anti-inflammatory, and wound-regeneration properties of P-bioHJ. In conclusion, this study provides a promising approach for treating biofilm-related infections.
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Affiliation(s)
- Miao Qin
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Xiumei Zhang
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Haiyang Ding
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Yanbai Chen
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Wenxuan He
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Yan Wei
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030060, China
| | - Weiyi Chen
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030060, China
| | - Yau Kei Chan
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, 999077, China
| | - Yiwei Shi
- NHC Key Laboratory of Pneumoconiosis, Shanxi Key Laboratory of Respiratory Diseases, Department of Pulmonary and Critical Care Medicine, The First Hospital of Shanxi Medical University, Taiyuan, 030001, China
| | - Di Huang
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030060, China
| | - Yi Deng
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, 999077, China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
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21
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Jara J, Alba C, Del Campo R, Fernández L, Sáenz de Pipaón M, Rodríguez JM, Orgaz B. Linking preterm infant gut microbiota to nasograstric enteral feeding tubes: exploring potential interactions and microbial strain transmission. Front Pediatr 2024; 12:1397398. [PMID: 38952433 PMCID: PMC11215057 DOI: 10.3389/fped.2024.1397398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 06/03/2024] [Indexed: 07/03/2024] Open
Abstract
Introduction Preterm birth is a growing problem worldwide. Staying at a neonatal intensive care unit (NICU) after birth is critical for the survival of preterm infants whose feeding often requires the use of nasogastric enteral feeding tubes (NEFT). These can be colonized by hospital-associated pathobionts that can access the gut of the preterm infants through this route. Since the gut microbiota is the most impactful factor on maturation of the immune system, any disturbance in this may condition their health. Therefore, the aim of this study is to assess the impact of NEFT-associated microbial communities on the establishment of the gut microbiota in preterm infants. Material and methods A metataxonomic analysis of fecal and NEFT-related samples obtained during the first 2 weeks of life of preterm infants was performed. The potential sharing of strains isolated from the same set of samples of bacterial species involved in NICU's outbreaks, was assessed by Random Amplification of Polymorphic DNA (RAPD) genotyping. Results In the samples taken 48 h after birth (NEFT-1 and Me/F1), Staphylococcus spp. was the most abundant genera (62% and 14%, respectively) and it was latter displaced to 5.5% and 0.45%, respectively by Enterobacteriaceae. Significant differences in beta diversity were detected in NEFT and fecal samples taken at day 17 after birth (NEFT-3 and F3) (p = 0.003 and p = 0.024, respectively). Significant positive correlations were found between the most relevant genera detected in NEFT-3 and F3. 28% of the patients shared at least one RAPD-PCR profile in fecal and NEFT samples and 11% of the total profiles were found at least once simultaneously in NEFT and fecal samples from the same patient. Conclusion The results indicate a parallel bacterial colonization of the gut of preterm neonates and the NEFTs used for feeding, potentially involving strain sharing between these niches. Moreover, the same bacterial RAPD profiles were found in neonates hospitalized in different boxes, suggesting a microbial transference within the NICU environment. This study may assist clinical staff in implementing best practices to mitigate the spread of pathogens that could threaten the health of preterm infants.
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Affiliation(s)
- J. Jara
- Department of Galenic Pharmacy and Food Science, School of Veterinary Sciences, University Complutense of Madrid (UCM), Madrid, Spain
| | - C. Alba
- Department of Nutrition and Food Science, School of Veterinary Sciences, University Complutense of Madrid (UCM), Madrid, Spain
| | - R. Del Campo
- Department of Microbiology, Ramón y Cajal University Hospital and Ramón y Cajal Health Research Institute (IRYCIS), Madrid, Spain
| | - L. Fernández
- Department of Galenic Pharmacy and Food Science, School of Veterinary Sciences, University Complutense of Madrid (UCM), Madrid, Spain
| | - M. Sáenz de Pipaón
- Department of Neonatology, La Paz University Hospital of Madrid, Madrid, Spain
- Department of Pediatrics, Autonoma University of Madrid, Madrid, Spain
| | - J. M. Rodríguez
- Department of Nutrition and Food Science, School of Veterinary Sciences, University Complutense of Madrid (UCM), Madrid, Spain
| | - B. Orgaz
- Department of Galenic Pharmacy and Food Science, School of Veterinary Sciences, University Complutense of Madrid (UCM), Madrid, Spain
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22
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Song X, Kang J, Wei X, Liu L, Liu Y, Wang F. Insights into the antibacterial effectiveness of linalool against Shigella flexneri on pork surface: Changes in bacterial growth and pork quality. Int J Food Microbiol 2024; 418:110718. [PMID: 38678956 DOI: 10.1016/j.ijfoodmicro.2024.110718] [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: 11/19/2023] [Revised: 04/18/2024] [Accepted: 04/22/2024] [Indexed: 05/01/2024]
Abstract
Shigella flexneri has the ability to contaminate pork and cause foodborne diseases. This study aimed to examine the effectiveness of linalool (a natural preservative) against S. flexneri and explore its potential application in contaminated pork. The results showed that linalool was capable of damaging the cell membrane and binding to the DNA of S. flexneri, and inhibiting biofilm formation and disrupting mature biofilms. The antibacterial effectiveness of linalool on the surface of pork was further demonstrated by analyzing the physicochemical properties of the pork (i.e., weight loss rate, pH value, color index, and TVB-N value) and its protein profiles. Linalool did not completely kill S. flexneri in pork at minimum bactericidal concentration (MBC) concentration and its antibacterial effect of linalool was stronger during the initial stage of storage. During storage, linalool influenced the abundance of specific proteins in the pork, particularly those involved in pathways related to fat metabolism. These findings offer novel insights into the antibacterial efficacy of linalool and its underlying mechanism in pork.
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Affiliation(s)
- Xueying Song
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710119, China; School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jiamu Kang
- School of Food Science and Technology, Hainan University, Haikou 570228, China
| | - Xingyan Wei
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Liu Liu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710119, China.
| | - Yongfeng Liu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Feng Wang
- Xi'an Supervision & Inspection Institute of Product Quality, Xi'an 710068, China
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23
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Mu Y, Tran HH, Xiang Z, Majumder A, Hsu E, Steager E, Koo H, Lee D. Spiky Magnetic Microparticles Synthesized from Microrod-Stabilized Pickering Emulsion. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2402292. [PMID: 38864236 DOI: 10.1002/smll.202402292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 05/21/2024] [Indexed: 06/13/2024]
Abstract
Tailoring the microstructure of magnetic microparticles is of vital importance for their applications. Spiky magnetic particles, such as those made from sunflower pollens, have shown promise in single cell treatment and biofilm removal. Synthetic methods that can replicate or extend the functionality of such spiky particles would be advantageous for their widespread utilization. In this work, a wet-chemical method is introduced for spiky magnetic particles that are templated from microrod-stabilized Pickering emulsions. The spiky morphology is generated by the upright attachment of silica microrods at the oil-water interface of oil droplets. Spiky magnetic microparticles with control over the length of the spikes are obtained by dispersing hydrophobic magnetic nanoparticles in the oil phase and photopolymerizing the monomer. The spiky morphology dramatically enhances colloidal stability of these particles in high ionic strength solutions and physiologic media such as human saliva and saline-based biofilm suspension. To demonstrate their utility, the spiky magnetic particles are applied for magnetically controlled removal of oral biofilms and retrieval of bacteria for diagnostic sampling. This method expands the toolbox for engineering microparticle morphology and could promote the fabrication of functional magnetic microrobots.
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Affiliation(s)
- Yijiang Mu
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Hong-Huy Tran
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
- School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Zhenting Xiang
- School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Anirban Majumder
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Emery Hsu
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Edward Steager
- School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Hyun Koo
- School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
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24
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Xiao S, Xie L, Gao Y, Wang M, Geng W, Wu X, Rodriguez RD, Cheng L, Qiu L, Cheng C. Artificial Phages with Biocatalytic Spikes for Synergistically Eradicating Antibiotic-Resistant Biofilms. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2404411. [PMID: 38837809 DOI: 10.1002/adma.202404411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 06/01/2024] [Indexed: 06/07/2024]
Abstract
Antibiotic-resistant pathogens have become a global public health crisis, especially biofilm-induced refractory infections. Efficient, safe, and biofilm microenvironment (BME)-adaptive therapeutic strategies are urgently demanded to combat antibiotic-resistant biofilms. Here, inspired by the fascinating biological structures and functions of phages, the de novo design of a spiky Ir@Co3O4 particle is proposed to serve as an artificial phage for synergistically eradicating antibiotic-resistant Staphylococcus aureus biofilms. Benefiting from the abundant nanospikes and highly active Ir sites, the synthesized artificial phage can simultaneously achieve efficient biofilm accumulation, extracellular polymeric substance (EPS) penetration, and superior BME-adaptive reactive oxygen species (ROS) generation, thus facilitating the in situ ROS delivery and enhancing the biofilm eradication. Moreover, metabolomics found that the artificial phage obstructs the bacterial attachment to EPS, disrupts the maintenance of the BME, and fosters the dispersion and eradication of biofilms by down-regulating the associated genes for the biosynthesis and preservation of both intra- and extracellular environments. The in vivo results demonstrate that the artificial phage can treat the biofilm-induced recalcitrant infected wounds equivalent to vancomycin. It is suggested that the design of this spiky artificial phage with synergistic "penetrate and eradicate" capability to treat antibiotic-resistant biofilms offers a new pathway for bionic and nonantibiotic disinfection.
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Affiliation(s)
- Sutong Xiao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Department of Medical Ultrasound, West China Hospital, Sichuan University, Chengdu, 610065, China
| | - Lan Xie
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Department of Medical Ultrasound, West China Hospital, Sichuan University, Chengdu, 610065, China
| | - Yang Gao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Department of Medical Ultrasound, West China Hospital, Sichuan University, Chengdu, 610065, China
| | - Mao Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Department of Medical Ultrasound, West China Hospital, Sichuan University, Chengdu, 610065, China
| | - Wei Geng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Department of Medical Ultrasound, West China Hospital, Sichuan University, Chengdu, 610065, China
| | - Xizheng Wu
- Max Planck Institute for Chemical Physics of Solids, 01187, Dresden, Germany
| | - Raul D Rodriguez
- Tomsk Polytechnic University, Lenin ave. 30, Tomsk, 634050, Russia
| | - Liang Cheng
- Department of Materials Science and Engineering, The Macau University of Science and Technology, Taipa, Macau, 999078, China
| | - Li Qiu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Department of Medical Ultrasound, West China Hospital, Sichuan University, Chengdu, 610065, China
| | - Chong Cheng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Department of Medical Ultrasound, West China Hospital, Sichuan University, Chengdu, 610065, China
- Department of Endodontics, Department of Orthodontics, State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
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25
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Tian S, Shi L, Ren Y, van der Mei HC, Busscher HJ. A normalized parameter for comparison of biofilm dispersants in vitro. Biofilm 2024; 7:100188. [PMID: 38495770 PMCID: PMC10943042 DOI: 10.1016/j.bioflm.2024.100188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 02/12/2024] [Accepted: 02/28/2024] [Indexed: 03/19/2024] Open
Abstract
Dispersal of infectious biofilms increases bacterial concentrations in blood. To prevent sepsis, the strength of a dispersant should be limited to allow the immune system to remove dispersed bacteria from blood, preferably without antibiotic administration. Biofilm bacteria are held together by extracellular polymeric substances that can be degraded by dispersants. Currently, comparison of the strength of dispersants is not possible by lack of a suitable comparison parameter. Here, a biofilm dispersal parameter is proposed that accounts for differences in initial biofilm properties, dispersant concentration and exposure time by using PBS as a control and normalizing outcomes with respect to concentration and time. The parameter yielded near-identical values based on dispersant-induced reductions in biomass or biofilm colony-forming-units and appeared strain-dependent across pathogens. The parameter as proposed is largely independent of experimental methods and conditions and suitable for comparing different dispersants with respect to different causative strains in particular types of infection.
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Affiliation(s)
- Shuang Tian
- University of Groningen and University Medical Center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, 9713, AV, Groningen, the Netherlands
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, PR China
| | - Linqi Shi
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, PR China
| | - Yijin Ren
- University of Groningen and University Medical Center Groningen, Department of Orthodontics, Hanzeplein 1, 9700, RB, Groningen, the Netherlands
| | - Henny C. van der Mei
- University of Groningen and University Medical Center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, 9713, AV, Groningen, the Netherlands
| | - Henk J. Busscher
- University of Groningen and University Medical Center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, 9713, AV, Groningen, the Netherlands
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26
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da Cruz Nizer WS, Adams ME, Allison KN, Montgomery MC, Mosher H, Cassol E, Overhage J. Oxidative stress responses in biofilms. Biofilm 2024; 7:100203. [PMID: 38827632 PMCID: PMC11139773 DOI: 10.1016/j.bioflm.2024.100203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 05/22/2024] [Accepted: 05/22/2024] [Indexed: 06/04/2024] Open
Abstract
Oxidizing agents are low-molecular-weight molecules that oxidize other substances by accepting electrons from them. They include reactive oxygen species (ROS), such as superoxide anions (O2-), hydrogen peroxide (H2O2), and hydroxyl radicals (HO-), and reactive chlorine species (RCS) including sodium hypochlorite (NaOCl) and its active ingredient hypochlorous acid (HOCl), and chloramines. Bacteria encounter oxidizing agents in many different environments and from diverse sources. Among them, they can be produced endogenously by aerobic respiration or exogenously by the use of disinfectants and cleaning agents, as well as by the mammalian immune system. Furthermore, human activities like industrial effluent pollution, agricultural runoff, and environmental activities like volcanic eruptions and photosynthesis are also sources of oxidants. Despite their antimicrobial effects, bacteria have developed many mechanisms to resist the damage caused by these toxic molecules. Previous research has demonstrated that growing as a biofilm particularly enhances bacterial survival against oxidizing agents. This review aims to summarize the current knowledge on the resistance mechanisms employed by bacterial biofilms against ROS and RCS, focussing on the most important mechanisms, including the formation of biofilms in response to oxidative stressors, the biofilm matrix as a protective barrier, the importance of detoxifying enzymes, and increased protection within multi-species biofilm communities. Understanding the complexity of bacterial responses against oxidative stress will provide valuable insights for potential therapeutic interventions and biofilm control strategies in diverse bacterial species.
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Affiliation(s)
| | - Madison Elisabeth Adams
- Department of Health Sciences, Carleton University, 1125 Colonel By Drive, Ottawa, K1S 5B6, ON, Canada
| | - Kira Noelle Allison
- Department of Health Sciences, Carleton University, 1125 Colonel By Drive, Ottawa, K1S 5B6, ON, Canada
| | | | - Hailey Mosher
- Department of Health Sciences, Carleton University, 1125 Colonel By Drive, Ottawa, K1S 5B6, ON, Canada
| | - Edana Cassol
- Department of Health Sciences, Carleton University, 1125 Colonel By Drive, Ottawa, K1S 5B6, ON, Canada
| | - Joerg Overhage
- Department of Health Sciences, Carleton University, 1125 Colonel By Drive, Ottawa, K1S 5B6, ON, Canada
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27
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He CY, Li Y, Zhou ZH, Liu BH, Gao XH. High-Entropy Photothermal Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2400920. [PMID: 38437805 DOI: 10.1002/adma.202400920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 02/28/2024] [Indexed: 03/06/2024]
Abstract
High-entropy (HE) materials, celebrated for their extraordinary chemical and physical properties, have garnered increasing attention for their broad applications across diverse disciplines. The expansive compositional range of these materials allows for nuanced tuning of their properties and innovative structural designs. Recent advances have been centered on their versatile photothermal conversion capabilities, effective across the full solar spectrum (300-2500 nm). The HE effect, coupled with hysteresis diffusion, imparts these materials with desirable thermal and chemical stability. These attributes position HE materials as a revolutionary alternative to traditional photothermal materials, signifying a transformative shift in photothermal technology. This review delivers a comprehensive summary of the current state of knowledge regarding HE photothermal materials, emphasizing the intricate relationship between their compositions, structures, light-absorbing mechanisms, and optical properties. Furthermore, the review outlines the notable advances in HE photothermal materials, emphasizing their contributions to areas, such as solar water evaporation, personal thermal management, solar thermoelectric generation, catalysis, and biomedical applications. The review culminates in presenting a roadmap that outlines prospective directions for future research in this burgeoning field, and also outlines fruitful ways to develop advanced HE photothermal materials and to expand their promising applications.
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Affiliation(s)
- Cheng-Yu He
- Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yang Li
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Zhuo-Hao Zhou
- Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Bao-Hua Liu
- Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Xiang-Hu Gao
- Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
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28
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Stockschläder L, Margaryan D, Omran S, Schomaker M, Greiner A, Trampuz A. Characteristics and Outcome of Vascular Graft Infections: A Risk Factor and Survival Analysis. Open Forum Infect Dis 2024; 11:ofae271. [PMID: 38868303 PMCID: PMC11167665 DOI: 10.1093/ofid/ofae271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 05/10/2024] [Indexed: 06/14/2024] Open
Abstract
Background Vascular graft infection (VGI) is a serious complication after implantation of arterial vascular grafts. Optimal surgical and pathogen-specific antimicrobial treatment regimens for VGI are largely unknown. We evaluated patients with arterial VGI according to onset, location, microbiological and imaging characteristics, and surgical and antimicrobial treatment and performed an outcome evaluation. Methods Consecutive patients with VGI treated in 2 hospitals from 2010 through 2020 were retrospectively analyzed. Uniform definition criteria and standardized outcome evaluation were applied. Logistic regression was used for multiple analysis; survival analysis was performed with Kaplan-Meier analysis and a log-rank test. Results Seventy-eight patients with VGI were included: 30 early-onset cases (<8 weeks after graft implantation) and 48 late-onset cases, involving 49 aortic and 29 peripheral grafts. The median time from initial implantation to diagnosis of VGI was significantly longer in aortic than peripheral VGIs (363 vs 56 days, P = .018). Late-onset VGI (odds ratio [OR], 7.3; P = .005) and the presence of surgical site infection/complication (OR, 8.21; P = .006) were independent risk factors for treatment failure. Surgical site infection/complication was associated with a higher risk for early-onset VGI (OR, 3.13; P = .040). Longer infection-free survival was observed in cases where the infected graft was surgically removed (P = .037). Conclusions This study underlines the importance of timely diagnosis of VGI and preventing surgical site infections/complications at graft implantation. It highlights the complexity of infection eradication, especially for late-onset infections, and the importance of adequate antimicrobial and surgical treatment.
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Affiliation(s)
- Leonie Stockschläder
- Center for Musculoskeletal Surgery, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Donara Margaryan
- Center for Musculoskeletal Surgery, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Safwan Omran
- Department of Vascular Surgery, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Martin Schomaker
- Department of Vascular Surgery, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Andreas Greiner
- Department of Vascular Surgery, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Andrej Trampuz
- Center for Musculoskeletal Surgery, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
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Ding R, Liu X, Zhao X, Sun Q, Cheng Y, Li A, Pei D, He G. Membrane-anchoring selenophene viologens for antibacterial photodynamic therapy against periodontitis via restoring subgingival flora and alleviating inflammation. Biomaterials 2024; 307:122536. [PMID: 38522327 DOI: 10.1016/j.biomaterials.2024.122536] [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: 08/04/2023] [Revised: 01/30/2024] [Accepted: 03/12/2024] [Indexed: 03/26/2024]
Abstract
Antibacterial photodynamic therapy (aPDT) has emerged as a promising strategy for treating periodontitis. However, the weak binding of most photosensitizers to bacteria and the hypoxic environment of periodontal pockets severely hamper the therapeutic efficacy. Herein, two novel oxygen-independent photosensitizers are developed by introducing selenophene into viologens and modifying with hexane chains (HASeV) or quaternary ammonium chains (QASeV), which improve the adsorption to bacteria through anchoring to the negatively charged cell membrane. Notably, QASeV binds only to the bacterial surface of Porphyromonas gingivalis and Fusobacterium nucleatum due to electrostatic binding, but HASeV can insert into their membrane by strong hydrophobic interactions. Therefore, HASeV exhibits superior antimicrobial activity and more pronounced plaque biofilm disruption than QASeV when combined with light irradiation (MVL-210 photoreactor, 350-600 nm, 50 mW/cm2), and a better effect on reducing the diversity and restoring the structure of subgingival flora in periodontitis rat model was found through 16S rRNA gene sequencing analysis. The histological and Micro-CT analyses reveal that HASeV-based aPDT has a better therapeutic effect in reducing periodontal tissue inflammation and alveolar bone resorption. This work provides a new strategy for the development of viologen-based photosensitizers, which may be a favorable candidate for the aPDT against periodontitis.
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Affiliation(s)
- Rui Ding
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China; Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education, Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an, Shaanxi, 710054, China
| | - Xu Liu
- Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education, Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an, Shaanxi, 710054, China
| | - Xiaodan Zhao
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Qi Sun
- Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education, Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an, Shaanxi, 710054, China
| | - Yilong Cheng
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Ang Li
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Dandan Pei
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China.
| | - Gang He
- Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education, Frontier Institute of Science and Technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an, Shaanxi, 710054, China.
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Sil M, Mukherjee D, Goswami A, Nag M, Lahiri D, Bhattacharya D. Antibiofilm activity of mesoporous silica nanoparticles against the biofilm associated infections. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:3617-3633. [PMID: 38051365 DOI: 10.1007/s00210-023-02872-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 11/21/2023] [Indexed: 12/07/2023]
Abstract
In pharmaceutical industries, various chemical carriers are present which are used for drug delivery to the correct target sites. The most popular and upcoming drug delivery carriers are mesoporous silica nanoparticles (MSN). The main reason for its popularity is its ability to be specific and optimize the drug delivery process in a controlled manner. Nowadays, MSNs are widely used to eradicate various microbial infections, especially the ones related to biofilms. Biofilms are sessile groups of cells that live by forming a consortium and exhibit antibacterial resistance (AMR). They exhibit AMR by extracellular polymeric substances (EPS) and various quorum sensing (QS) signaling molecules. Usually, bacterial and fungal cells are capable of forming biofilms. These biofilms are pathogenic. In the majority of the cases, biofilms cause nosocomial diseases. This review will focus on the antibiofilm activities of MSN, its mechanism of target-specific drug delivery, and its ability to disrupt the bacterial biofilms inhibiting the infection. The review will also discuss various mechanisms for the delivery of pharmaceutical molecules by the MSNs to inhibit the bacterial biofilms, and lastly, we will talk about the different types of MSNs and their antibiofilm activities.
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Affiliation(s)
- Moumita Sil
- Department of Bioscience & Bioengineering, Indian Institute of Technology, Jodhpur, India
| | - Dipro Mukherjee
- Agricultural and Ecological Research Unit, Biological Sciences Division, Indian Statistical Institute, Kolkata, India
| | - Arunava Goswami
- Department of Bioscience & Bioengineering, Indian Institute of Technology, Jodhpur, India
| | - Moupriya Nag
- Department of Biotechnology, Institute of Engineering and Management, Kolkata, New Town, University of Engineering and Management, Kolkata, India
| | - Dibyajit Lahiri
- Department of Biotechnology, Institute of Engineering and Management, Kolkata, New Town, University of Engineering and Management, Kolkata, India.
| | - Debasmita Bhattacharya
- Department of Basic Science and Humanities, Institute of Engineering and Management, Kolkata, Salt Lake, University of Engineering and Management, Kolkata, India
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Liu S, Zhou H, Kong J, Chen H, Chen L, Tang M, Zhou B, Xu M, Chen L, Zhou T. Verapamil increases susceptibility of colistin-resistant Acinetobacter baumannii to colistin. Int J Antimicrob Agents 2024; 64:107233. [PMID: 38824971 DOI: 10.1016/j.ijantimicag.2024.107233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 05/18/2024] [Accepted: 05/26/2024] [Indexed: 06/04/2024]
Abstract
Acinetobacter baumannii, which is predominantly responsible for hospital-acquired infections, presents a tremendous clinical challenge due to its increasing antibiotic resistance to colistin (COL), a last-line antibiotic. As a result, the combination of antimicrobial and non-antimicrobial agents is emerging as a more popular treatment approach against infections caused by COL-resistant A. baumannii. This study administered COL and verapamil (VER), that is an antihypertensive and antiarrhythmic agent. We found that the susceptibility of A. baumannii to COL was restored both in vitro and in vivo. Scanning electron microscope and Crystal violet staining showed inhibition of the VER/COL combination on bacterial biofilm formation. Cytotoxicity assay and haemolysis test were used to confirm in vitro safety evaluation. Further experiments using propidium iodide staining revealed that the VER/COL combination improved the therapeutic efficacy of COL by modifying the permeability of bacterial membranes. As demonstrated by reactive oxygen species experiments, the drug combination caused the accumulation of bacterial reactive oxygen species and their eventual death. Additionally, VER/COL treatment significantly reduced the efflux of Rhodamine 123 (Rh123). For the first time, this study identifies the anti-hypertensive drug VER as a COL potentiator against A. baumannii, providing a potential treatment approach against A. baumannii infections and improving patient outcomes.
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Affiliation(s)
- Sichen Liu
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, Zhejiang, China
| | - Huijing Zhou
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, Zhejiang, China
| | - Jingchun Kong
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Huanchang Chen
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, Zhejiang, China
| | - Lei Chen
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, Zhejiang, China
| | - Miran Tang
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, Zhejiang, China
| | - Beibei Zhou
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, Zhejiang, China
| | - Mengxin Xu
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, Zhejiang, China
| | - Lijiang Chen
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, Zhejiang, China.
| | - Tieli Zhou
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, Wenzhou, Zhejiang, China.
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Nishikawa J, Fujii T, Fukuda S, Yoneda S, Tamura Y, Shimizu Y, Yanai A, Kobayashi Y, Harada K, Kawasaki K, Mishima K, Watanabe K, Mizukami Y, Yoshiyama H, Suehiro Y, Yamasaki T, Takami T. Far-ultraviolet irradiation at 222 nm destroys and sterilizes the biofilms formed by periodontitis pathogens. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2024:S1684-1182(24)00082-3. [PMID: 38825404 DOI: 10.1016/j.jmii.2024.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 01/28/2024] [Accepted: 05/19/2024] [Indexed: 06/04/2024]
Abstract
BACKGROUND Periodontal disease is the leading cause of tooth loss, and an association between periodontal disease and non-oral systemic diseases has been shown. Formation of biofilm by periodontal pathogens such as Fusobacterium nucleatum, Porphyromonas gingivalis, and Streptococcus mutans and their resistance to antimicrobial agents are at the root of persistent and chronic bacterial infections. METHODS The bactericidal effect of far-ultraviolet (F-UV) light irradiation at 222 nm on periodontal bacteria was assessed qualitatively and quantitatively. The effect of biofilm disruption by F-UV light on periodontal bacteria was examined by crystal violet staining, and the morphologic changes of the biofilm after F-UV irradiation were explored by confocal laser microscopy and scanning electron microscopy. We developed a thin fiber-type 222 nm F-UV irradiator and studied its safety and effect of reducing bacteria in rodent models. RESULTS F-UV light at 222 nm had a bactericidal effect on F. nucleatum, P. gingivalis, and S. mutans. Irradiation with F-UV light reduced the biofilm formed by the bacteria and sterilized them from within. Confocal laser microscopy showed a clear reduction in biofilm thickness, and scanning electron microscopy confirmed disintegration of the biofilm architecture. F-UV irradiation was less damaging to DNA and less cytotoxic than deep-ultraviolet light, and it reduced bacterial counts on the tooth surface. CONCLUSION F-UV irradiation has the potential to destroy biofilm and act as a bactericide against pathogenic bacteria in the biofilm.
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Affiliation(s)
- Jun Nishikawa
- Faculty of Laboratory Science, Yamaguchi University Graduate School of Medicine, Ube, Japan.
| | - Tomohiro Fujii
- Faculty of Laboratory Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Soichiro Fukuda
- Faculty of Laboratory Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Shoma Yoneda
- Faculty of Laboratory Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Yuta Tamura
- Faculty of Laboratory Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Yuki Shimizu
- Faculty of Laboratory Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Akie Yanai
- Faculty of Laboratory Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Yuki Kobayashi
- Faculty of Laboratory Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Koji Harada
- Department of Oral and Maxillofacial Surgery, Yamaguchi University Graduate School of Medicin, Ube, Japan
| | - Keisuke Kawasaki
- Department of Oral and Maxillofacial Surgery, Yamaguchi University Graduate School of Medicin, Ube, Japan
| | - Katsuaki Mishima
- Department of Oral and Maxillofacial Surgery, Yamaguchi University Graduate School of Medicin, Ube, Japan
| | - Kenji Watanabe
- Center for Gene Research, Yamaguchi University, Ube, Japan
| | | | - Hironori Yoshiyama
- Department of Microbiology, Shimane University School of Medicine, Izumo, Japan
| | - Yutaka Suehiro
- Department of Oncology and Laboratory Medicine, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Takahiro Yamasaki
- Department of Oncology and Laboratory Medicine, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Taro Takami
- Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Ube, Japan
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Park W, Park M, Chun J, Hwang J, Kim S, Choi N, Kim SM, Kim S, Jung S, Ko KS, Kweon DH. Delivery of endolysin across outer membrane of Gram-negative bacteria using translocation domain of botulinum neurotoxin. Int J Antimicrob Agents 2024; 64:107216. [PMID: 38795926 DOI: 10.1016/j.ijantimicag.2024.107216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 04/08/2024] [Accepted: 05/20/2024] [Indexed: 05/28/2024]
Abstract
The emergence of multidrug-resistant pathogens has outpaced the development of new antibiotics, leading to renewed interest in endolysins. Endolysins have been investigated as novel biocontrol agents for Gram-positive bacteria. However, their efficacy against Gram-negative species is limited by the barrier presented by their outer membrane, which prevents endolysin access to the peptidoglycan substrate. Here, we used the translocation domain of botulinum neurotoxin to deliver endolysin across the outer membrane of Gram-negative bacteria. The translocation domain selectively interacts with and penetrates membranes composed of anionic lipids, which have been used in nature to deliver various proteins into animal cells. In addition to the botulinum neurotoxin translocation domain, we have fused bacteriophage-derived receptor binding protein to endolysins. This allows the attached protein to efficiently bind to a broad spectrum of Gram-negative bacteria. By attaching these target-binding and translocation machineries to endolysins, we aimed to develop an engineered endolysin with broad-spectrum targeting and enhanced antibacterial activity against Gram-negative species. To validate our strategy, we designed engineered endolysins using two well-known endolysins, T5 and LysPA26, and tested them against 23 strains from six species of Gram-negative bacteria, confirming that our machinery can act broadly. In particular, we observed a 2.32 log reduction in 30 min with only 0.5 µM against an Acinetobacter baumannii isolate. We also used the SpyTag/SpyCatcher system to easily attach target-binding proteins, thereby improving its target-binding ability. Overall, our newly developed endolysin engineering strategy may be a promising approach to control multidrug-resistant Gram-negative bacterial strains.
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Affiliation(s)
- Wonbeom Park
- Department of Integrative Biotechnology, Sungkyunkwan University College of Biotechnology and Bioengineering, Suwon, Republic of Korea
| | - Myungseo Park
- Department of Integrative Biotechnology, Sungkyunkwan University College of Biotechnology and Bioengineering, Suwon, Republic of Korea; Infectious Diseases Therapeutic Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon, Republic of Korea
| | - Jihwan Chun
- Department of Integrative Biotechnology, Sungkyunkwan University College of Biotechnology and Bioengineering, Suwon, Republic of Korea
| | - Jaehyeon Hwang
- Department of Integrative Biotechnology, Sungkyunkwan University College of Biotechnology and Bioengineering, Suwon, Republic of Korea
| | - Suhyun Kim
- Department of Integrative Biotechnology, Sungkyunkwan University College of Biotechnology and Bioengineering, Suwon, Republic of Korea
| | - Nayoon Choi
- Department of Integrative Biotechnology, Sungkyunkwan University College of Biotechnology and Bioengineering, Suwon, Republic of Korea
| | - Soo Min Kim
- Department of Integrative Biotechnology, Sungkyunkwan University College of Biotechnology and Bioengineering, Suwon, Republic of Korea
| | - SeungJoo Kim
- Department of Integrative Biotechnology, Sungkyunkwan University College of Biotechnology and Bioengineering, Suwon, Republic of Korea
| | - Sangwon Jung
- Research Center, MVRIX, Anyang, Republic of Korea
| | - Kwan Soo Ko
- Department of Microbiology, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
| | - Dae-Hyuk Kweon
- Department of Integrative Biotechnology, Sungkyunkwan University College of Biotechnology and Bioengineering, Suwon, Republic of Korea; Research Center, MVRIX, Anyang, Republic of Korea.
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Oh MJ, Kim JH, Kim J, Lee S, Xiang Z, Liu Y, Koo H, Lee D. Drug-loaded adhesive microparticles for biofilm prevention on oral surfaces. J Mater Chem B 2024; 12:4935-4944. [PMID: 38683039 PMCID: PMC11111112 DOI: 10.1039/d4tb00134f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 04/15/2024] [Indexed: 05/01/2024]
Abstract
The oral cavity, a warm and moist environment, is prone to the proliferation of microorganisms like Candida albicans (C. albicans), which forms robust biofilms on biotic and abiotic surfaces, leading to challenging infections. These biofilms are resistant to conventional treatments due to their resilience against antimicrobials and immune responses. The dynamic nature of the oral cavity, including the salivary flow and varying surface properties, complicates the delivery of therapeutic agents. To address these challenges, we introduce dendritic microparticles engineered for enhanced adhesion to dental surfaces and effective delivery of antifungal agents and antibiofilm enzymes. These microparticles are fabricated using a water-in-oil-in-water emulsion process involving a blend of poly(lactic-co-glycolic acid) (PLGA) random copolymer (RCP) and PLGA-b-poly(ethylene glycol) (PLGA-b-PEG) block copolymer (BCP), resulting in particles with surface dendrites that exhibit strong adhesion to oral surfaces. Our study demonstrates the potential of these adhesive microparticles for oral applications. The adhesion tests on various oral surfaces, including dental resin, hydroxyapatite, tooth enamel, and mucosal tissues, reveal superior adhesion of these microparticles compared to conventional spherical ones. Furthermore, the release kinetics of nystatin from these microparticles show a sustained release pattern that can kill C. albicans. The biodegradation of these microparticles on tooth surfaces and their efficacy in preventing fungal biofilms have also been demonstrated. Our findings highlight the effectiveness of adhesive microparticles in delivering therapeutic agents within the oral cavity, offering a promising approach to combat biofilm-associated infections.
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Affiliation(s)
- Min Jun Oh
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
| | - Jae-Hyun Kim
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
| | - Jaekyoung Kim
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
| | - Sunghee Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
| | - Zhenting Xiang
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
| | - Yuan Liu
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
| | - Hyun Koo
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
- Center for Innovation & Precision Dentistry, School of Dental Medicine and School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
- Center for Innovation & Precision Dentistry, School of Dental Medicine and School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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Ribeiro NS, da Rosa DF, Xavier MA, Dos Reis SV, Beys-da-Silva WO, Santi L, Bizarro CV, Dalberto PF, Basso LA, Macedo AJ. Unveiling antibiofilm potential: proteins from Priestia sp. targeting Staphylococcus aureus biofilm formation. Antonie Van Leeuwenhoek 2024; 117:78. [PMID: 38740670 DOI: 10.1007/s10482-024-01977-7] [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: 12/19/2023] [Accepted: 05/06/2024] [Indexed: 05/16/2024]
Abstract
Staphylococcus aureus is the etiologic agent of many nosocomial infections, and its biofilm is frequently isolated from medical devices. Moreover, the dissemination of multidrug-resistant (MDR) strains from this pathogen, such as methicillin-resistant S. aureus (MRSA) strains, is a worldwide public health issue. The inhibition of biofilm formation can be used as a strategy to weaken bacterial resistance. Taking that into account, we analysed the ability of marine sponge-associated bacteria to produce antibiofilm molecules, and we found that marine Priestia sp., isolated from marine sponge Scopalina sp. collected on the Brazilian coast, secretes proteins that impair biofilm development from S. aureus. Partially purified proteins (PPP) secreted after 24 hours of bacterial growth promoted a 92% biofilm mass reduction and 4.0 µg/dL was the minimum concentration to significantly inhibit biofilm formation. This reduction was visually confirmed by light microscopy and Scanning Electron Microscopy (SEM). Furthermore, biochemical assays showed that the antibiofilm activity of PPP was reduced by ethylenediaminetetraacetic acid (EDTA) and 1,10 phenanthroline (PHEN), while it was stimulated by zinc ions, suggesting an active metallopeptidase in PPP. This result agrees with mass spectrometry (MS) identification, which indicated the presence of a metallopeptidase from the M28 family. Additionally, whole-genome sequencing analysis of Priestia sp. shows that gene ywad, a metallopeptidase-encoding gene, was present. Therefore, the results presented herein indicate that PPP secreted by the marine Priestia sp. can be explored as a potential antibiofilm agent and help to treat chronic infections.
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Affiliation(s)
- Nicole Sartori Ribeiro
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Deisiane Fernanda da Rosa
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Marina Amaral Xavier
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Sharon Vieira Dos Reis
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Walter O Beys-da-Silva
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Lucélia Santi
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Cristiano Valim Bizarro
- Instituto Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB), Centro de Pesquisas em Biologia Molecular e Funcional (CPBMF), and Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), 92A TECNOPUC, Av. Ipiranga 6681, Partenon, Porto Alegre, 90616-900, Brazil
| | - Pedro Ferrari Dalberto
- Instituto Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB), Centro de Pesquisas em Biologia Molecular e Funcional (CPBMF), and Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), 92A TECNOPUC, Av. Ipiranga 6681, Partenon, Porto Alegre, 90616-900, Brazil
| | - Luiz Augusto Basso
- Instituto Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB), Centro de Pesquisas em Biologia Molecular e Funcional (CPBMF), and Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), 92A TECNOPUC, Av. Ipiranga 6681, Partenon, Porto Alegre, 90616-900, Brazil
| | - Alexandre José Macedo
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
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Yu YM, Lu YP, Zhang T, Zheng YF, Liu YS, Xia DD. Biomaterials science and surface engineering strategies for dental peri-implantitis management. Mil Med Res 2024; 11:29. [PMID: 38741175 DOI: 10.1186/s40779-024-00532-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 04/29/2024] [Indexed: 05/16/2024] Open
Abstract
Peri-implantitis is a bacterial infection that causes soft tissue inflammatory lesions and alveolar bone resorption, ultimately resulting in implant failure. Dental implants for clinical use barely have antibacterial properties, and bacterial colonization and biofilm formation on the dental implants are major causes of peri-implantitis. Treatment strategies such as mechanical debridement and antibiotic therapy have been used to remove dental plaque. However, it is particularly important to prevent the occurrence of peri-implantitis rather than treatment. Therefore, the current research spot has focused on improving the antibacterial properties of dental implants, such as the construction of specific micro-nano surface texture, the introduction of diverse functional coatings, or the application of materials with intrinsic antibacterial properties. The aforementioned antibacterial surfaces can be incorporated with bioactive molecules, metallic nanoparticles, or other functional components to further enhance the osteogenic properties and accelerate the healing process. In this review, we summarize the recent developments in biomaterial science and the modification strategies applied to dental implants to inhibit biofilm formation and facilitate bone-implant integration. Furthermore, we summarized the obstacles existing in the process of laboratory research to reach the clinic products, and propose corresponding directions for future developments and research perspectives, so that to provide insights into the rational design and construction of dental implants with the aim to balance antibacterial efficacy, biological safety, and osteogenic property.
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Affiliation(s)
- Ya-Meng Yu
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing, 100081, China
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology & NHC Key Laboratory of Digital Stomatology & NMPA Key Laboratory for Dental Materials, Beijing, 100081, China
| | - Yu-Pu Lu
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing, 100081, China
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology & NHC Key Laboratory of Digital Stomatology & NMPA Key Laboratory for Dental Materials, Beijing, 100081, China
| | - Ting Zhang
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Yu-Feng Zheng
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China.
| | - Yun-Song Liu
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology & NHC Key Laboratory of Digital Stomatology & NMPA Key Laboratory for Dental Materials, Beijing, 100081, China.
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China.
| | - Dan-Dan Xia
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing, 100081, China.
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology & NHC Key Laboratory of Digital Stomatology & NMPA Key Laboratory for Dental Materials, Beijing, 100081, China.
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37
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Lee J, Song H, Kim K. Inhibition of Candida albicans Biofilm Formation and Attenuation of Its Virulence by Liriope muscari. Antibiotics (Basel) 2024; 13:434. [PMID: 38786162 PMCID: PMC11117302 DOI: 10.3390/antibiotics13050434] [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: 03/29/2024] [Revised: 05/07/2024] [Accepted: 05/10/2024] [Indexed: 05/25/2024] Open
Abstract
(1) Background: Although Candida albicans accounts for the majority of fungal infections, therapeutic options are limited and require alternative antifungal agents with new targets; (2) Methods: A biofilm formation assay with RPMI1640 medium was performed with Liriope muscari extract. A combination antifungal assay, dimorphic transition assay, and adhesion assay were performed under the biofilm formation condition to determine the anti-biofilm formation effect. qRT-PCR analysis was accomplished to confirm changes in gene expression; (3) Results: L. muscari extract significantly reduces biofilm formation by 51.65% at 1.56 μg/mL use and therefore increases susceptibility to miconazole. L. muscari extract also inhibited the dimorphic transition of Candida; nearly 50% of the transition was inhibited when 1.56 μg/mL of the extract was treated. The extract of L. muscari inhibited the expression of genes related to hyphal development and extracellular matrix of 34.4% and 36.0%, respectively, as well as genes within the Ras1-cAMP-PKA, Cph2-Tec1, and MAP kinase signaling pathways of 25.58%, 7.1% and 15.8%, respectively, at 1.56 μg/mL of L. muscari extract treatment; (4) Conclusions: L. muscari extract significantly reduced Candida biofilm formation, which lead to induced antifungal susceptibility to miconazole. It suggests that L. muscari extract is a promising anti-biofilm candidate of Candida albicans since the biofilm formation of Candida albicans is an excellent target for candidiasis regulation.
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Affiliation(s)
- Jeonghoon Lee
- Department of Medical Science of Meridian, College of Korean Medicine, Graduate School, Kyung Hee University, Kyungheedae-ro 6-gil, Dongdaemun-gu, Seoul 02447, Republic of Korea;
| | - Hyunchan Song
- Graduate School of Biotechnology, Kyung Hee University, 1732, Deogyeong-daero, Giheung-gu, Yongin-si 17104, Republic of Korea;
| | - Kiyoung Kim
- Graduate School of Biotechnology, Kyung Hee University, 1732, Deogyeong-daero, Giheung-gu, Yongin-si 17104, Republic of Korea;
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38
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Beach M, Nayanathara U, Gao Y, Zhang C, Xiong Y, Wang Y, Such GK. Polymeric Nanoparticles for Drug Delivery. Chem Rev 2024; 124:5505-5616. [PMID: 38626459 PMCID: PMC11086401 DOI: 10.1021/acs.chemrev.3c00705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2024]
Abstract
The recent emergence of nanomedicine has revolutionized the therapeutic landscape and necessitated the creation of more sophisticated drug delivery systems. Polymeric nanoparticles sit at the forefront of numerous promising drug delivery designs, due to their unmatched control over physiochemical properties such as size, shape, architecture, charge, and surface functionality. Furthermore, polymeric nanoparticles have the ability to navigate various biological barriers to precisely target specific sites within the body, encapsulate a diverse range of therapeutic cargo and efficiently release this cargo in response to internal and external stimuli. However, despite these remarkable advantages, the presence of polymeric nanoparticles in wider clinical application is minimal. This review will provide a comprehensive understanding of polymeric nanoparticles as drug delivery vehicles. The biological barriers affecting drug delivery will be outlined first, followed by a comprehensive description of the various nanoparticle designs and preparation methods, beginning with the polymers on which they are based. The review will meticulously explore the current performance of polymeric nanoparticles against a myriad of diseases including cancer, viral and bacterial infections, before finally evaluating the advantages and crucial challenges that will determine their wider clinical potential in the decades to come.
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Affiliation(s)
- Maximilian
A. Beach
- School
of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Umeka Nayanathara
- School
of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Yanting Gao
- School
of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Changhe Zhang
- School
of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Yijun Xiong
- School
of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Yufu Wang
- School
of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Georgina K. Such
- School
of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
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Su Y, Shahriar SSM, Andrabi SM, Wang C, Sharma NS, Xiao Y, Wong SL, Wang G, Xie J. It Takes Two to Tangle: Microneedle Patches Co-delivering Monoclonal Antibodies and Engineered Antimicrobial Peptides Effectively Eradicate Wound Biofilms. Macromol Biosci 2024; 24:e2300519. [PMID: 38217528 DOI: 10.1002/mabi.202300519] [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: 11/14/2023] [Revised: 12/20/2023] [Indexed: 01/15/2024]
Abstract
Wound biofilms pose a great clinical challenge. Herein, this work reports a dissolvable microneedle patch for dual delivery of monoclonal antibodies anti-PBP2a and engineers antimicrobial peptides W379. In vitro antibacterial efficacy testing with microneedle patches containing a combination of 250 ng mL-1 W379 and 250 ng mL-1 anti-BPB2a decreases the bacterial count from ≈3.31 × 107 CFU mL-1 to 1.28 × 102 CFU mL-1 within 2 h without eliciting evident cytotoxicity. Ex vivo testing indicates W379 and anti-PBP2a co-loaded microneedle patch displayed a remarkable reduction of bacterial load by ≈7.18 log CFU after administered only once within 48 h. The bacterial count is significantly diminished compared to the treatment by either W379 or anti-PBP2a-loaded alone microneedle patches. When administered twice within 48 h, no bacteria are identified. Further in vivo study also reveals that after two treatments of W379 and anti-PBP2a co-loaded PVP microneedle patches within 48 h, the bacterial colonies are undetectable in a type II diabetic mouse wound biofilm model. Taken together, W379 and anti-PBP2a co-loaded PVP microneedle patches hold great promise in treating wound biofilms.
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Affiliation(s)
- Yajuan Su
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Shatil S M Shahriar
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Syed Muntazir Andrabi
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Chenlong Wang
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Navatha Shree Sharma
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Yizhu Xiao
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Shannon L Wong
- Department of Surgery-Plastic Surgery, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Guangshun Wang
- Department of Pathology and Microbiology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Jingwei Xie
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Department of Mechanical and Materials Engineering, College of Engineering, University of Nebraska Lincoln, Lincoln, NE, 68588, USA
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40
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Zhang Q, Fu J, Lin H, Xuan G, Zhang W, Chen L, Wang G. Shining light on carbon dots: Toward enhanced antibacterial activity for biofilm disruption. Biotechnol J 2024; 19:e2400156. [PMID: 38804136 DOI: 10.1002/biot.202400156] [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: 03/12/2024] [Revised: 04/22/2024] [Accepted: 05/06/2024] [Indexed: 05/29/2024]
Abstract
In spite of tremendous efforts dedicated to addressing bacterial infections and biofilm formation, the post-antibiotic ear continues to witness a gap between the established materials and an easily accessible yet biocompatible antibacterial reagent. Here we show carbon dots (CDs) synthesized via a single hydrothermal process can afford promising antibacterial activity that can be further enhanced by exposure to light. By using citric acid and polyethyleneimine as the precursors, the photoluminescence CDs can be produced within a one-pot, one-step hydrothermal reaction in only 2 h. The CDs demonstrate robust antibacterial properties against both Gram-positive and Gram-negative bacteria and, notably, a considerable enhancement of antibacterial effect can be observed upon photo-irradiation. Mechanistic insights reveal that the CDs generate singlet oxygen (1O2) when exposed to light, leading to an augmented reactive oxygen species level. The approach for disruption of biofilms and inhibition of biofilm formation by using the CDs has also been established. Our findings present a potential solution to combat antibacterial resistance and offer a path to reduce dependence on traditional antibiotics.
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Affiliation(s)
- Qingsong Zhang
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Jianxin Fu
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Hong Lin
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Guanhua Xuan
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Weiwei Zhang
- College of Marine Sciences, Ningbo University, Ningbo, China
| | - Lingxin Chen
- CAS Key Laboratory of Coastal Environmental Process and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Guoqing Wang
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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41
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Ding J, Wang X, Liu W, Ding C, Wu J, He R, Zhang X. Biofilm Microenvironment Activated Antibiotic Adjuvant for Implant-Associated Infections by Systematic Iron Metabolism Interference. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2400862. [PMID: 38408138 PMCID: PMC11077648 DOI: 10.1002/advs.202400862] [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: 01/24/2024] [Indexed: 02/28/2024]
Abstract
Hematoma, a risk factor of implant-associated infections (IAIs), creates a Fe-rich environment following implantation, which proliferates the growth of pathogenic bacteria. Fe metabolism is a major vulnerability for pathogens and is crucial for several fundamental physiological processes. Herein, a deferiprone (DFP)-loaded layered double hydroxide (LDH)-based nanomedicine (DFP@Ga-LDH) that targets the Fe-rich environments of IAIs is reported. In response to acidic changes at the infection site, DFP@Ga-LDH systematically interferes with bacterial Fe metabolism via the substitution of Ga3+ and Fe scavenging by DFP. DFP@Ga-LDH effectively reverses the Fe/Ga ratio in Pseudomonas aeruginosa, causing comprehensive interference in various Fe-associated targets, including transcription and substance metabolism. In addition to its favorable antibacterial properties, DFP@Ga-LDH functions as a nano-adjuvant capable of delaying the emergence of antibiotic resistance. Accordingly, DFP@Ga-LDH is loaded with a siderophore antibiotic (cefiderocol, Cefi) to achieve the antibacterial nanodrug DFP@Ga-LDH-Cefi. Antimicrobial and biosafety efficacies of DFP@Ga-LDH-Cefi are validated using ex vivo human skin and mouse IAI models. The pivotal role of the hematoma-created Fe-rich environment of IAIs is highlighted, and a nanoplatform that efficiently interferes with bacterial Fe metabolism is developed. The findings of the study provide promising guidance for future research on the exploration of nano-adjuvants as antibacterial agents.
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Affiliation(s)
- Jianing Ding
- Department of OrthopaedicsShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai200233P. R. China
| | - Xin Wang
- Department of OrthopaedicsShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai200233P. R. China
| | - Wei Liu
- Department of OrthopaedicsShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai200233P. R. China
| | - Cheng Ding
- Department of OrthopaedicsShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai200233P. R. China
| | - Jianrong Wu
- Shanghai Institute of Ultrasound in MedicineShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai200233P. R. China
| | - Renke He
- Department of OrthopaedicsShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai200233P. R. China
| | - Xianlong Zhang
- Department of OrthopaedicsShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai200233P. R. China
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Castagnini D, Palma K, Jara-Wilde J, Navarro N, González MJ, Toledo J, Canales-Huerta N, Scavone P, Härtel S. Proteus mirabilis biofilm expansion microscopy yields over 4-fold magnification for super-resolution of biofilm structure and subcellular DNA organization. J Microbiol Methods 2024; 220:106927. [PMID: 38561125 DOI: 10.1016/j.mimet.2024.106927] [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: 02/09/2024] [Revised: 03/28/2024] [Accepted: 03/29/2024] [Indexed: 04/04/2024]
Abstract
Bacterial biofilms form when bacteria attach to surfaces and generate an extracellular matrix that embeds and stabilizes a growing community. Detailed visualization and quantitative analysis of biofilm architecture by optical microscopy are limited by the law of diffraction. Expansion Microscopy (ExM) is a novel Super-Resolution technique where specimens are physically enlarged by a factor of ∼4, prior to observation by conventional fluorescence microscopy. ExM requires homogenization of rigid constituents of biological components by enzymatic digestion. We developed an ExM approach capable of expanding 48-h old Proteus mirabilis biofilms 4.3-fold (termed PmbExM), close to the theoretic maximum expansion factor without gross shape distortions. Our protocol, based on lytic and glycoside-hydrolase enzymatic treatments, degrades rigid components in bacteria and extracellular matrix. Our results prove PmbExM to be a versatile and easy-to-use Super-Resolution approach for enabling studies of P. mirabilis biofilm architecture, assembly, and even intracellular features, such as DNA organization.
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Affiliation(s)
- Dante Castagnini
- Laboratory for Scientific Image Analysis SCIAN-Lab, Integrative Biology Program, Institute of Biomedical Sciences ICBM, Faculty of Medicine, University of Chile, Santiago, Chile; Biomedical Neuroscience Institute BNI, Independencia, Santiago, Chile
| | - Karina Palma
- Laboratory for Scientific Image Analysis SCIAN-Lab, Integrative Biology Program, Institute of Biomedical Sciences ICBM, Faculty of Medicine, University of Chile, Santiago, Chile; Biomedical Neuroscience Institute BNI, Independencia, Santiago, Chile; Centro de Informática Médica y Telemedicina CIMT, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Jorge Jara-Wilde
- Laboratory for Scientific Image Analysis SCIAN-Lab, Integrative Biology Program, Institute of Biomedical Sciences ICBM, Faculty of Medicine, University of Chile, Santiago, Chile; Biomedical Neuroscience Institute BNI, Independencia, Santiago, Chile; Centro de Informática Médica y Telemedicina CIMT, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Nicolás Navarro
- Advanced Center for Chronic Diseases ACCDiS, Santiago, Chile.; Laboratorio de Biofilms Microbianos, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - María José González
- Laboratorio de Biofilms Microbianos, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - Jorge Toledo
- Red de Equipamiento Científico Avanzado REDECA, Institute of Biomedical Sciences ICBM, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Nicole Canales-Huerta
- Laboratory for Scientific Image Analysis SCIAN-Lab, Integrative Biology Program, Institute of Biomedical Sciences ICBM, Faculty of Medicine, University of Chile, Santiago, Chile; Biomedical Neuroscience Institute BNI, Independencia, Santiago, Chile
| | - Paola Scavone
- Laboratorio de Biofilms Microbianos, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - Steffen Härtel
- Laboratory for Scientific Image Analysis SCIAN-Lab, Integrative Biology Program, Institute of Biomedical Sciences ICBM, Faculty of Medicine, University of Chile, Santiago, Chile; Biomedical Neuroscience Institute BNI, Independencia, Santiago, Chile; Centro de Informática Médica y Telemedicina CIMT, Faculty of Medicine, University of Chile, Santiago, Chile; National Center for Health Information Systems CENS, Santiago, Chile.; Red de Equipamiento Científico Avanzado REDECA, Institute of Biomedical Sciences ICBM, Faculty of Medicine, University of Chile, Santiago, Chile; Centro de Modelamiento Matemático, Universidad de Chile, Beauchef 851, Casilla 170-3, Santiago, Chile.
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43
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Hajfathalian M, Mossburg KJ, Radaic A, Woo KE, Jonnalagadda P, Kapila Y, Bollyky PL, Cormode DP. A review of recent advances in the use of complex metal nanostructures for biomedical applications from diagnosis to treatment. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2024; 16:e1959. [PMID: 38711134 PMCID: PMC11114100 DOI: 10.1002/wnan.1959] [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: 01/14/2024] [Revised: 03/31/2024] [Accepted: 04/01/2024] [Indexed: 05/08/2024]
Abstract
Complex metal nanostructures represent an exceptional category of materials characterized by distinct morphologies and physicochemical properties. Nanostructures with shape anisotropies, such as nanorods, nanostars, nanocages, and nanoprisms, are particularly appealing due to their tunable surface plasmon resonances, controllable surface chemistries, and effective targeting capabilities. These complex nanostructures can absorb light in the near-infrared, enabling noteworthy applications in nanomedicine, molecular imaging, and biology. The engineering of targeting abilities through surface modifications involving ligands, antibodies, peptides, and other agents potentiates their effects. Recent years have witnessed the development of innovative structures with diverse compositions, expanding their applications in biomedicine. These applications encompass targeted imaging, surface-enhanced Raman spectroscopy, near-infrared II imaging, catalytic therapy, photothermal therapy, and cancer treatment. This review seeks to provide the nanomedicine community with a thorough and informative overview of the evolving landscape of complex metal nanoparticle research, with a specific emphasis on their roles in imaging, cancer therapy, infectious diseases, and biofilm treatment. This article is categorized under: Diagnostic Tools > In Vivo Nanodiagnostics and Imaging Therapeutic Approaches and Drug Discovery > Nanomedicine for Infectious Disease Diagnostic Tools > Diagnostic Nanodevices.
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Affiliation(s)
- Maryam Hajfathalian
- Department of Biomedical Engineering, New Jersey Institute of Technology, University Heights, Newark, NJ 07102
- Division of Infectious Diseases, School of Medicine, Stanford University, Stanford, CA 94305
| | - Katherine J. Mossburg
- Department of Radiology, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
| | - Allan Radaic
- School of Dentistry, University of California Los Angeles
| | - Katherine E. Woo
- Division of Infectious Diseases, School of Medicine, Stanford University, Stanford, CA 94305
| | - Pallavi Jonnalagadda
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Yvonne Kapila
- School of Dentistry, University of California Los Angeles
| | - Paul L. Bollyky
- Division of Infectious Diseases, Department of Medicine, Stanford University
| | - David P. Cormode
- Department of Radiology, Department of Bioengineering, University of Pennsylvania
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Lendel AM, Antonova NP, Grigoriev IV, Usachev EV, Gushchin VA, Vasina DV. Biofilm-disrupting effects of phage endolysins LysAm24, LysAp22, LysECD7, and LysSi3: breakdown the matrix. World J Microbiol Biotechnol 2024; 40:186. [PMID: 38683213 DOI: 10.1007/s11274-024-03999-9] [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: 01/26/2024] [Accepted: 04/21/2024] [Indexed: 05/01/2024]
Abstract
The ability of most opportunistic bacteria to form biofilms, coupled with antimicrobial resistance, hinder the efforts to control widespread infections, resulting in high risks of negative outcomes and economic costs. Endolysins are promising compounds that efficiently combat bacteria, including multidrug-resistant strains and biofilms, without a low probability of subsequent emergence of stable endolysin-resistant phenotypes. However, the details of antibiofilm effects of these enzymes are poorly understood. To elucidate the interactions of bacteriophage endolysins LysAm24, LysAp22, LysECD7, and LysSi3 with bacterial films formed by Gram-negative species, we estimated their composition and assessed the endolysins' effects on the most abundant exopolymers in vitro. The obtained data suggests a pronounced efficiency of these lysins against biofilms with high (Klebsiella pneumoniae) and low (Acinetobacter baumannii) matrix contents, or dual-species biofilms, resulting in at least a twofold loss of the biomass. These peptidoglycan hydrolases interacted diversely with protective compounds of biofilms such as extracellular DNA and polyanionic carbohydrates, indicating a spectrum of biofilm-disrupting effects for bacteriolytic phage enzymes. Specifically, we detected disruption of acid exopolysaccharides by LysAp22, strong DNA-binding capacity of LysAm24, both of these interactions for LysECD7, and neither of them for LysSi3.
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Affiliation(s)
- Anastasiya M Lendel
- Laboratory of Pathogen Population Variability Mechanisms, N. F. Gamaleya National Research Center for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, Moscow, 123098, Russia.
| | - Nataliia P Antonova
- Laboratory of Pathogen Population Variability Mechanisms, N. F. Gamaleya National Research Center for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, Moscow, 123098, Russia
| | - Igor V Grigoriev
- Translational Biomedicine Laboratory, N. F. Gamaleya National Research Center for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, Moscow, 123098, Russia
| | - Evgeny V Usachev
- Translational Biomedicine Laboratory, N. F. Gamaleya National Research Center for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, Moscow, 123098, Russia
| | - Vladimir A Gushchin
- Laboratory of Pathogen Population Variability Mechanisms, N. F. Gamaleya National Research Center for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, Moscow, 123098, Russia
| | - Daria V Vasina
- Laboratory of Pathogen Population Variability Mechanisms, N. F. Gamaleya National Research Center for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, Moscow, 123098, Russia
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45
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Panthi VK, Fairfull-Smith KE, Islam N. Liposomal drug delivery strategies to eradicate bacterial biofilms: Challenges, recent advances, and future perspectives. Int J Pharm 2024; 655:124046. [PMID: 38554739 DOI: 10.1016/j.ijpharm.2024.124046] [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: 12/23/2023] [Revised: 03/08/2024] [Accepted: 03/23/2024] [Indexed: 04/02/2024]
Abstract
Typical antibiotic treatments are often ineffectual against biofilm-related infections since bacteria residing within biofilms have developed various mechanisms to resist antibiotics. To overcome these limitations, antimicrobial-loaded liposomal nanoparticles are a promising anti-biofilm strategy as they have demonstrated improved antibiotic delivery and eradication of bacteria residing in biofilms. Antibiotic-loaded liposomal nanoparticles revealed remarkably higher antibacterial and anti-biofilm activities than free drugs in experimental settings. Moreover, liposomal nanoparticles can be used efficaciously for the combinational delivery of antibiotics and other antimicrobial compounds/peptide which facilitate, for instance, significant breakdown of the biofilm matrix, increased bacterial elimination from biofilms and depletion of metabolic activity of various pathogens. Drug-loaded liposomes have mitigated recurrent infections and are considered a promising tool to address challenges associated to antibiotic resistance. Furthermore, it has been demonstrated that surface charge and polyethylene glycol modification of liposomes have a notable impact on their antibacterial biofilm activity. Future investigations should tackle the persistent hurdles associated with development of safe and effective liposomes for clinical application and investigate novel antibacterial treatments, including CRISPR-Cas gene editing, natural compounds, phages, and nano-mediated approaches. Herein, we emphasize the significance of liposomes in inhibition and eradication of various bacterial biofilms, their challenges, recent advances, and future perspectives.
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Affiliation(s)
- Vijay Kumar Panthi
- Pharmacy Discipline, School of Clinical Sciences, Queensland University of Technology (QUT), Brisbane, QLD, Australia
| | - Kathryn E Fairfull-Smith
- School of Chemistry and Physics, Faculty of Science, Queensland University of Technology, Brisbane, Queensland 4001, Australia; Centre for Materials Science, Queensland University of Technology, Brisbane, Queensland 4001, Australia
| | - Nazrul Islam
- Pharmacy Discipline, School of Clinical Sciences, Queensland University of Technology (QUT), Brisbane, QLD, Australia; Institute of Health and Biomedical Innovation (IHBI), Queensland University of Technology (QUT), Brisbane, QLD, Australia; Centre for Immunology and Infection Control (CIIC), Queensland University of Technology (QUT), Brisbane, QLD, Australia.
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46
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Bueno-Silva B, Parma-Garcia J, Frigo L, Suárez LJ, Macedo TT, Uyeda FH, Melo MARDC, Sacco R, Mourão CF, Feres M, Shibli JA, Figueiredo LC. Antimicrobial Activity of Methylene Blue Associated with Photodynamic Therapy: In Vitro Study in Multi-Species Oral Biofilm. Pathogens 2024; 13:342. [PMID: 38668297 PMCID: PMC11054395 DOI: 10.3390/pathogens13040342] [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: 01/28/2024] [Revised: 04/11/2024] [Accepted: 04/18/2024] [Indexed: 04/29/2024] Open
Abstract
The control of infectious diseases caused by biofilms is a continuing challenge for researchers due to the complexity of their microbial structures and therapeutic implications. Photodynamic therapy as an adjunctive anti-infective treatment has been described as a possible valid approach but has not been tested in polymicrobial biofilm models. This study evaluated the effect of photodynamic therapy in vitro with methylene blue (MB) 0.01% and red LEDs (λ = 660 nm, power density ≈ 330 mW/cm2, 2 mm distance from culture) on the metabolic activity and composition of a multispecies subgingival biofilm. Test Groups LED and MB + LED showed a more significant reduction in metabolic activity than the non-LED application group (~50 and 55%, respectively). Groups LED and MB equally affected (more than 80%) the total bacterial count in biofilms. No differences were noted in the bacterial biofilm composition between the groups. In vitro LED alone or the MB + LED combination reduced the metabolic activity of bacteria in polymicrobial biofilms and the total subgingival biofilm count.
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Affiliation(s)
- Bruno Bueno-Silva
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
- Faculdade de Odontologia de Piracicaba, Universidade Estadual de Campinas, Piracicaba 13414-903, Brazil
| | - Javier Parma-Garcia
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
| | - Lucio Frigo
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
- Faculdade de Odontologia da Associação Paulista de Cirurgiões Dentistas (FAOA), São Paulo 02011-000, Brazil
| | - Lina J. Suárez
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
- Departamento de Ciencias Básicas y Medicina Oral, Facultad de Odontología, Universidad Nacional de Colombia, Cra 45 # 26-85, Bogotá 11001, Colombia
| | - Tatiane Tiemi Macedo
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
| | - Fábio Hideaki Uyeda
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
| | - Marcelo Augusto Ruiz da Cunha Melo
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
| | - Roberto Sacco
- Department of Oral Surgery, Faculty of Dentistry, Oral & Craniofacial Sciences, King’s College London, London SE1 9SP, UK
| | - Carlos Fernando Mourão
- Department of Periodontology, Dental Research Division, Tuft University School of Dental Medicine, Boston, MA 02111, USA;
| | - Magda Feres
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
- Department of Oral Medicine, Infection, and Immunity, Division of Periodontology, Harvard School of Dental Medicine, Boston, MA 02115, USA
| | - Jamil Awad Shibli
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
| | - Luciene Cristina Figueiredo
- Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos 07023-070, Brazil; (B.B.-S.); (J.P.-G.); (L.F.); (L.J.S.); (M.F.); (J.A.S.); (L.C.F.)
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Zhang L, Bera H, Guo Y, Shi C, Ulrik Lind J, Radeke C, Wang J, Wang H, Zhao X, Cun D, Yang M. Co-spray dried inhalable composite powders of ciprofloxacin and alginate oligosaccharide as anti-biofilm therapy. Int J Pharm 2024; 654:123949. [PMID: 38417723 DOI: 10.1016/j.ijpharm.2024.123949] [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: 12/24/2023] [Revised: 02/25/2024] [Accepted: 02/25/2024] [Indexed: 03/01/2024]
Abstract
The treatment of chronic respiratory infections caused by biofilm formation are extremely challenging owing to poor drug penetration into the complex biofilm structure and high drug resistance. Local delivery of an antibiotic together with a non-antibiotic adjuvant to the lungs could often enhance the therapeutic responses by targeting different bacterial growth pathways and minimizing drug resistance. In this study, we designed new inhalable dry powders containing ciprofloxacin (CIP) and OligoG (Oli, a low-molecular-weight alginate oligosaccharide impairing the mucoid biofilms by interacting with their cationic ions) to combat respiratory bacterial biofilm infections. The resulting powders were characterized with respect to their morphology, solid-state property, surface chemistry, moisture sorption behavior, and dissolution rate. The aerosol performance and storage stability of the dry powders were also evaluated. The results showed that inhalable dry powders composed of CIP and Oli could be readily accomplished via the wet milling and spray drying process. Upon the storage under 20 ± 2 °C/20 ± 2 % relative humidity (RH) for one month, there was no significant change in the in vitro aerosol performances of the dry powders. In contrast, the dry powders became non-inhalable following the storage at 20 ± 2 °C/53 ± 2 % RH for one month due to the hygroscopic nature of Oli, which could be largely prevented by incorporation of leucine. Collectively, this study suggests that the newly developed co-spray-dried powders composed of CIP and Oli might represent a promising and alternative treatment strategy against respiratory bacterial biofilm infections.
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Affiliation(s)
- Li Zhang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Wenhua Road, No. 103, 110016 Shenyang, China; Joint International Research Laboratory of Intelligent Drug Delivery Systems, Ministry of Education, China; Lanzhou Institute of Biological Products Co., Ltd, Lanzhou, China
| | - Hriday Bera
- Dr. B.C. Roy College of Pharmacy & Allied Health Sciences, Durgapur, India
| | - Yi Guo
- Wuya College of Innovation, Shenyang Pharmaceutical University, Wenhua Road, No. 103, 110016 Shenyang, China; Joint International Research Laboratory of Intelligent Drug Delivery Systems, Ministry of Education, China; Taiyuan Health School, Taiyuan, China
| | - Changzhi Shi
- Wuya College of Innovation, Shenyang Pharmaceutical University, Wenhua Road, No. 103, 110016 Shenyang, China; Joint International Research Laboratory of Intelligent Drug Delivery Systems, Ministry of Education, China
| | - Johan Ulrik Lind
- Department of Health Technology (DTU Health Tech), Technical University of Denmark, Lyngby, Denmark
| | - Carmen Radeke
- Department of Health Technology (DTU Health Tech), Technical University of Denmark, Lyngby, Denmark
| | - Junwei Wang
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Hengzhuang Wang
- Department of Clinical Microbiology, Copenhagen University Hospital, Rigshospitalet, Henrik Harpestrengsvej 4A, DK-2100 Copenhagen, Denmark; Department of Immunology and Microbiology, University of Copenhagen, Blegdamsvej 3B, DK-2200 Copenhagen, Denmark
| | - Xia Zhao
- Key Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Dongmei Cun
- Wuya College of Innovation, Shenyang Pharmaceutical University, Wenhua Road, No. 103, 110016 Shenyang, China; Joint International Research Laboratory of Intelligent Drug Delivery Systems, Ministry of Education, China.
| | - Mingshi Yang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Wenhua Road, No. 103, 110016 Shenyang, China; Joint International Research Laboratory of Intelligent Drug Delivery Systems, Ministry of Education, China; Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark.
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48
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Liu H, Zuo Y, Lv S, Liu X, Zhang J, Zhao C, Xu X, Xu Y, Wang X. Ultralow Loading Copper-Intercalated MoO 3 Nanobelts with High Activity against Antibiotic-Resistant Bacteria. ACS APPLIED MATERIALS & INTERFACES 2024; 16:17182-17192. [PMID: 38551997 DOI: 10.1021/acsami.3c19062] [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: 04/12/2024]
Abstract
In recent years, the infection rate of antibiotic resistance has been increasing year by year, and the prevalence of super bacteria has posed a great threat to human health. Therefore, there is an urgent need to find new antibiotic alternatives with long-term inhibitory activity against a broad spectrum of bacteria and microorganisms in order to avoid the proliferation of more multidrug-resistant (MDR) bacteria. The presence of natural van der Waals (vdW) gaps in layered materials allows them to be easily inserted by different guest species, providing an attractive strategy for optimizing their physicochemical properties and applications. Here, we have successfully constructed a copper-intercalated α-MoO3 nanobelt based on nanoenzymes, which is antibacterial through the synergistic effect of multiple enzymes. Compared with α-MoO3, MoO3-x/Cu nanobelts with a copper loading capacity of 2.11% possess enhanced peroxidase (POD) catalytic activity and glutathione (GSH) depletion, indicating that copper intercalation significantly improves the catalytic performance of the nanoenzymes. The MoO3-x/Cu nanobelts are effective in inducing POD and oxidase (OXD) and catalase (CAT) activities in the presence of H2O2 and O2, which resulted in the generation of large amounts of reactive oxygen species (ROS), which were effective in bacterial killing. Interestingly, MoO3-x/Cu nanobelts can serve as glutathione oxidase (GSHOx)-like nanoenzymes, which can deplete GSH in bacteria and thus significantly improve the bactericidal effect. The multienzyme-catalyzed synergistic antimicrobial strategy shows excellent antimicrobial efficiency against β-lactamase-producing Escherichia coli (ESBL-E. coli) and methicillin-resistant Staphylococcus aureus (MRSA). MoO3-x/Cu exhibits excellent spectral bactericidal properties at very low concentrations (20 μg mL-1). Our work highlights the wide range of antibacterial and anti-infective biological applications of copper-intercalated MoO3-x/Cu nanobelt catalysts.
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Affiliation(s)
- Hu Liu
- College of Life Sciences, Institute of Biomedical Engineering, Qingdao University, Ningxia Road 308, Qingdao 266071, Shandong, China
| | - Yuhui Zuo
- College of Life Sciences, Institute of Biomedical Engineering, Qingdao University, Ningxia Road 308, Qingdao 266071, Shandong, China
| | - Shiyang Lv
- College of Life Sciences, Institute of Biomedical Engineering, Qingdao University, Ningxia Road 308, Qingdao 266071, Shandong, China
| | - Xiaohui Liu
- College of Life Sciences, Institute of Biomedical Engineering, Qingdao University, Ningxia Road 308, Qingdao 266071, Shandong, China
| | - Jiamin Zhang
- College of Life Sciences, Institute of Biomedical Engineering, Qingdao University, Ningxia Road 308, Qingdao 266071, Shandong, China
| | - Chenli Zhao
- College of Life Sciences, Institute of Biomedical Engineering, Qingdao University, Ningxia Road 308, Qingdao 266071, Shandong, China
| | - Xiaomin Xu
- College of Life Sciences, Institute of Biomedical Engineering, Qingdao University, Ningxia Road 308, Qingdao 266071, Shandong, China
| | - Yuanhong Xu
- College of Life Sciences, Institute of Biomedical Engineering, Qingdao University, Ningxia Road 308, Qingdao 266071, Shandong, China
| | - Xinsheng Wang
- College of Life Sciences, Institute of Biomedical Engineering, Qingdao University, Ningxia Road 308, Qingdao 266071, Shandong, China
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49
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Wang L, Zheng J, Hou W, Zhang C, Zhang J, Fan X, Zhang H, Han Y. The Anti-Microbial Peptide Citrocin Controls Pseudomonas aeruginosa Biofilms by Breaking Down Extracellular Polysaccharide. Int J Mol Sci 2024; 25:4122. [PMID: 38612931 PMCID: PMC11012989 DOI: 10.3390/ijms25074122] [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: 02/20/2024] [Revised: 03/31/2024] [Accepted: 04/05/2024] [Indexed: 04/14/2024] Open
Abstract
Citrocin is an anti-microbial peptide that holds great potential in animal feed. This study evaluates the anti-microbial and anti-biofilm properties of Citrocin and explores the mechanism of action of Citrocin on the biofilm of P. aeruginosa. The results showed that Citrocin had a significant inhibitory effect on the growth of P. aeruginosa with a minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of 0.3 mg/mL. All five concentrations (1/4MIC, 1/2MIC, MIC, 2MIC, and 4MIC) of Citrocin inhibited P. aeruginosa biofilm formation. Citrocin at the MIC, 2MIC and 4MIC removed 42.7%, 76.0% and 83.2% of mature biofilms, respectively, and suppressed the swarming motility, biofilm metabolic activity and extracellular polysaccharide production of P. aeruginosa. Metabolomics analysis indicated that 0.3 mg/mL of Citrocin up- regulated 26 and down-regulated 83 metabolites, mainly comprising amino acids, fatty acids, organic acids and sugars. Glucose and amino acid metabolic pathways, including starch and sucrose metabolism as well as arginine and proline metabolism, were highly enriched by Citrocin. In summary, our research reveals the anti-biofilm mechanism of Citrocin at the metabolic level, which provides theoretical support for the development of novel anti-biofilm strategies for combatting P. aeruginosa.
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Affiliation(s)
- Liyao Wang
- College of Animal Science and Technology, Southwest University, Chongqing 402460, China; (L.W.); (J.Z.); (W.H.); (C.Z.); (J.Z.); (X.F.); (H.Z.)
- College of Life Science and Technology, Southeast University, Nanjing 211189, China
| | - Jiaqi Zheng
- College of Animal Science and Technology, Southwest University, Chongqing 402460, China; (L.W.); (J.Z.); (W.H.); (C.Z.); (J.Z.); (X.F.); (H.Z.)
- Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Hong Kong SAR, China
| | - Wenchao Hou
- College of Animal Science and Technology, Southwest University, Chongqing 402460, China; (L.W.); (J.Z.); (W.H.); (C.Z.); (J.Z.); (X.F.); (H.Z.)
| | - Chaowen Zhang
- College of Animal Science and Technology, Southwest University, Chongqing 402460, China; (L.W.); (J.Z.); (W.H.); (C.Z.); (J.Z.); (X.F.); (H.Z.)
| | - Jie Zhang
- College of Animal Science and Technology, Southwest University, Chongqing 402460, China; (L.W.); (J.Z.); (W.H.); (C.Z.); (J.Z.); (X.F.); (H.Z.)
| | - Xuanbo Fan
- College of Animal Science and Technology, Southwest University, Chongqing 402460, China; (L.W.); (J.Z.); (W.H.); (C.Z.); (J.Z.); (X.F.); (H.Z.)
| | - Hongliang Zhang
- College of Animal Science and Technology, Southwest University, Chongqing 402460, China; (L.W.); (J.Z.); (W.H.); (C.Z.); (J.Z.); (X.F.); (H.Z.)
- College of Animal Science and Technology, China Agricultural University, Beijing 100083, China
| | - Yuzhu Han
- College of Animal Science and Technology, Southwest University, Chongqing 402460, China; (L.W.); (J.Z.); (W.H.); (C.Z.); (J.Z.); (X.F.); (H.Z.)
- Chongqing Key Laboratory of Herbivore Science, Chongqing 402460, China
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50
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Panio A, Ionescu AC, La Ferla B, Zoia L, Savadori P, Tartaglia GM, Brambilla E. Cellulose Nanocrystals Show Anti-Adherent and Anti-Biofilm Properties against Oral Microorganisms. Bioengineering (Basel) 2024; 11:355. [PMID: 38671777 PMCID: PMC11048519 DOI: 10.3390/bioengineering11040355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 03/22/2024] [Accepted: 03/25/2024] [Indexed: 04/28/2024] Open
Abstract
Cellulose nanocrystals (CNCs) are cellulose-derived nanomaterials that can be easily obtained, e.g., from vegetable waste produced by circular economies. They show promising antimicrobial activity and an absence of side effects and toxicity. This study investigated the ability of CNCs to reduce microbial adherence and biofilm formation using in vitro microbiological models reproducing the oral environment. Microbial adherence by microbial strains of oral interest, Streptococcus mutans and Candida albicans, was evaluated on the surfaces of salivary pellicle-coated enamel disks in the presence of different aqueous solutions of CNCs. The anti-biofilm activity of the same CNC solutions was tested against S. mutans and an oral microcosm model based on mixed plaque inoculum using a continuous-flow bioreactor. Results showed the excellent anti-adherent activity of the CNCs against the tested strains from the lowest concentration tested (0.032 wt. %, p < 0.001). Such activity was significantly higher against S. mutans than against C. albicans (p < 0.01), suggesting a selective anti-adherent activity against pathogenic strains. At the same time, there was a minimal, albeit significant, anti-biofilm activity (0.5 and 4 wt. % CNC solution for S. mutans and oral microcosm, respectively, p = 0.01). This makes CNCs particularly interesting as anticaries agents, encouraging their use in the oral field.
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Affiliation(s)
- Antonella Panio
- Oral Microbiology and Biomaterials Laboratory, Department of Biomedical, Surgical, and Dental Sciences, University of Milan, Via Pascal, 36, 20133 Milan, Italy; (A.P.); (E.B.)
- Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, 20100 Milan, Italy; (P.S.); (G.M.T.)
| | - Andrei C. Ionescu
- Oral Microbiology and Biomaterials Laboratory, Department of Biomedical, Surgical, and Dental Sciences, University of Milan, Via Pascal, 36, 20133 Milan, Italy; (A.P.); (E.B.)
- Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, 20100 Milan, Italy; (P.S.); (G.M.T.)
| | - Barbara La Ferla
- Department of Earth and Environmental Sciences, Università degli Studi di Milano-Bicocca, Piazza dell’Ateneo Nuovo, 1, 20126 Milan, Italy; (B.L.F.); (L.Z.)
| | - Luca Zoia
- Department of Earth and Environmental Sciences, Università degli Studi di Milano-Bicocca, Piazza dell’Ateneo Nuovo, 1, 20126 Milan, Italy; (B.L.F.); (L.Z.)
| | - Paolo Savadori
- Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, 20100 Milan, Italy; (P.S.); (G.M.T.)
- Department of Biomedical, Surgical, and Dental Sciences, University of Milan, Via Della Commenda, 10/12, 20122 Milan, Italy
| | - Gianluca M. Tartaglia
- Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, 20100 Milan, Italy; (P.S.); (G.M.T.)
- Department of Biomedical, Surgical, and Dental Sciences, University of Milan, Via Della Commenda, 10/12, 20122 Milan, Italy
| | - Eugenio Brambilla
- Oral Microbiology and Biomaterials Laboratory, Department of Biomedical, Surgical, and Dental Sciences, University of Milan, Via Pascal, 36, 20133 Milan, Italy; (A.P.); (E.B.)
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