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Yu F, Zhong Y, Zhang B, Zhou Y, He M, Yang Y, Wang Q, Yang X, Ren X, Qian J, Zhang H, Tian M. A New Theranostic Platform Against Gram-Positive Bacteria Based on Near-Infrared-Emissive Aggregation-Induced Emission Nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2308071. [PMID: 38342680 DOI: 10.1002/smll.202308071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 01/24/2024] [Indexed: 02/13/2024]
Abstract
Infections induced by Gram-positive bacteria pose a great threat to public health. Antibiotic therapy, as the first chosen strategy against Gram-positive bacteria, is inevitably associated with antibiotic resistance selection. Novel therapeutic strategies for the discrimination and inactivation of Gram-positive bacteria are thus needed. Here, a specific type of aggregation-induced emission luminogen (AIEgen) with near-infrared fluorescence emission as a novel antibiotic-free therapeutic strategy against Gram-positive bacteria is proposed. With the combination of a positively charged group into a highly twisted architecture, self-assembled AIEgens (AIE nanoparticles (NPs)) at a relatively low concentration (5 µm) exhibited specific binding and photothermal effect against living Gram-positive bacteria both in vitro and in vivo. Moreover, toxicity assays demonstrated excellent biocompatibility of AIE NPs at this concentration. All these properties make the AIE NPs as a novel generation of theranostic platform for combating Gram-positive bacteria and highlight their promising potential for in vivo tracing of such bacteria.
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Affiliation(s)
- Feiyan Yu
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China
| | - Yan Zhong
- Department of Nuclear Medicine and PET Center, The Second Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China
- Institute of Nuclear Medicine and Molecular Imaging of Zhejiang University, Hangzhou, 310009, China
- Key Laboratory of Medical Molecular Imaging of Zhejiang Province, Hangzhou, 310009, China
| | - Bing Zhang
- College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Yu Zhou
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China
| | - Mubin He
- State Key Laboratory of Extreme Photonics and Instrumentation, Centre for Optical and Electromagnetic Research, College of Optical Science and Engineering, International Research Center for Advanced Photonics, Hangzhou, 310058, China
| | - Yang Yang
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China
| | - Qianqian Wang
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China
| | - Xi Yang
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China
| | - Xiuyun Ren
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, China
| | - Jun Qian
- State Key Laboratory of Extreme Photonics and Instrumentation, Centre for Optical and Electromagnetic Research, College of Optical Science and Engineering, International Research Center for Advanced Photonics, Hangzhou, 310058, China
| | - Hong Zhang
- Department of Nuclear Medicine and PET Center, The Second Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China
- Institute of Nuclear Medicine and Molecular Imaging of Zhejiang University, Hangzhou, 310009, China
- Key Laboratory of Medical Molecular Imaging of Zhejiang Province, Hangzhou, 310009, China
- Key Laboratory for Biomedical Engineering of Ministry of Education, Zhejiang University, Hangzhou, 310007, China
| | - Mei Tian
- Department of Nuclear Medicine and PET Center, The Second Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China
- Institute of Nuclear Medicine and Molecular Imaging of Zhejiang University, Hangzhou, 310009, China
- Key Laboratory of Medical Molecular Imaging of Zhejiang Province, Hangzhou, 310009, China
- Human Phenome Institute, Fudan University, Shanghai, 201203, China
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2
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Fernández-Mateo R, García-Sánchez P, Ramos A, Morgan H. Concentration-polarization electroosmosis for particle fractionation. LAB ON A CHIP 2024; 24:2968-2974. [PMID: 38726642 DOI: 10.1039/d4lc00081a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Concentration-polarization electroosmosis (CPEO) refers to steady-state electroosmotic flows around charged dielectric micro-particles induced by low-frequency AC electric fields. Recently, these flows were shown to cause repulsion of colloidal particles from the wall of a microfluidic channel when an electric field is applied along the length of the channel. In this work, we exploit this mechanism to demonstrate fractionation of micron-sized polystyrene particles and bacteria in a flow-focusing device. The results are in agreement with predictions of the CPEO theory. The ease of implementation of CPEO-based fractionation in microfluidics makes it an ideal candidate for combining with current techniques commonly used to generate particle lift, such as inertial or viscoelastic focusing, requiring no extra fabrication steps other than inserting two electrodes.
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Affiliation(s)
- Raúl Fernández-Mateo
- School of Electronics and Computer Science, University of Southampton, Southampton SO17 1BJ, UK.
| | - Pablo García-Sánchez
- Depto. Electrónica y Electromagnetismo, Facultad de Física, Universidad de Sevilla, Avda. Reina Mercedes s/n, 41012, Sevilla, Spain
| | - Antonio Ramos
- Depto. Electrónica y Electromagnetismo, Facultad de Física, Universidad de Sevilla, Avda. Reina Mercedes s/n, 41012, Sevilla, Spain
| | - Hywel Morgan
- School of Electronics and Computer Science, University of Southampton, Southampton SO17 1BJ, UK.
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Kumarajith TM, Powell SM, Breadmore MC. Isotachophoretic quantification of total viable bacteria on meat and surfaces. Anal Chim Acta 2024; 1296:342253. [PMID: 38401922 DOI: 10.1016/j.aca.2024.342253] [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: 08/25/2023] [Revised: 12/18/2023] [Accepted: 01/13/2024] [Indexed: 02/26/2024]
Abstract
BACKGROUND The quantification of microbes, particularly live bacteria, is of utmost importance in assessing the quality of meat products. In the context of meat processing facilities, prompt identification and removal of contaminated carcasses or surfaces is crucial to ensuring the continuous production of safe meat for human consumption. The plate count method and other traditional detection methods are not only labour-intensive but also time-consuming taking 24-48 h. RESULTS In this report, we present a novel isotachophoretic quantification method utilizing two nucleic acid stains, SYTO9 and propionic iodide, for the detection of total viable bacteria. The study employed E. coli M23 bacteria as a model organism, with an analysis time of only 30 min. The method demonstrated a limit of detection (LOD) of 184 CFU mL-1 and 14 cells mL-1 for total viable count and total cell count, respectively. Furthermore, this new approach is capable of detecting the microbial quality standard limits for food contacting surfaces (10 CFU cm-2) and meat (1.99 × 104 CFU cm-2) by swabbing an area of 10 × 10 cm2. SIGNIFICANCE In contrast to the culture-based methods usually employed in food processing facilities, this isotachophoretic technique enables easy and rapid detection (<30 min) of microorganisms, facilitating crucial decision-making essential for maintaining product quality and safety.
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Affiliation(s)
- Thisara M Kumarajith
- Australia Centre for Research on Separation Science, Chemistry, School of Natural Sciences, Tasmania, Australia; Tasmanian Institute of Agriculture, Tasmania, Australia
| | | | - Michael C Breadmore
- Australia Centre for Research on Separation Science, Chemistry, School of Natural Sciences, Tasmania, Australia.
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Morimura A, Taniguchi M, Takei H, Sakamoto O, Naono N, Akeda Y, Onozuka D, Yoshimura J, Tomono K, Kutsuna S, Hamaguchi S. Using novel micropore technology combined with artificial intelligence to differentiate Staphylococcus aureus and Staphylococcus epidermidis. Sci Rep 2024; 14:6994. [PMID: 38523156 PMCID: PMC10961322 DOI: 10.1038/s41598-024-55773-4] [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: 07/11/2023] [Accepted: 02/27/2024] [Indexed: 03/26/2024] Open
Abstract
Methods for identifying bacterial pathogens are broadly categorised into conventional culture-based microbiology, nucleic acid-based tests, and mass spectrometry. The conventional method requires several days to isolate and identify bacteria. Nucleic acid-based tests and mass spectrometry are relatively rapid and reliable, but they require trained technicians. Moreover, mass spectrometry requires expensive equipment. The development of a novel, inexpensive, and simple technique for identifying bacterial pathogens is needed. Through combining micropore technology and assembly machine learning, we developed a novel classifier whose receiver operating characteristic (ROC) curve showed an area under the ROC curve of 0.94, which rapidly differentiated between Staphylococcus aureus and Staphylococcus epidermidis in this proof-of-concept study. Morphologically similar bacteria belonging to an identical genus can be distinguished using our method, which requires no specific training, and may facilitate the diagnosis and treatment of patients with bacterial infections in remote areas and in developing countries.
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Affiliation(s)
- Ayumi Morimura
- Department of Infection Control and Prevention, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Masateru Taniguchi
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
| | - Hiroyasu Takei
- Aipore Inc., 26-1 Sakuraoka-cho, Shibuya-ku, Tokyo, 150-8512, Japan
| | - Osamu Sakamoto
- Aipore Inc., 26-1 Sakuraoka-cho, Shibuya-ku, Tokyo, 150-8512, Japan
| | - Norihiko Naono
- Aipore Inc., 26-1 Sakuraoka-cho, Shibuya-ku, Tokyo, 150-8512, Japan
| | - Yukihiro Akeda
- Department of Bacteriology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Daisuke Onozuka
- Department of Oral Microbe Control, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Jumpei Yoshimura
- Department of Traumatology and Acute Critical Medicine, Graduate School of Medicine, Osaka University, 2-15 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Kazunori Tomono
- Osaka Institute of Public Health, 1-3-3 Nakamichi, Higashinari-ku, Osaka, 537-0025, Japan
| | - Satoshi Kutsuna
- Department of Infection Control and Prevention, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
- Department of Oral Microbe Control, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
- Division of Infection Control and Prevention, Osaka University Hospital, 2-15 Yamadaoka, Suita, Osaka, 565-0871, Japan
- Division of Fostering Required Medical Human Resources, Center for Infectious Disease Education and Research (CiDER), Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Shigeto Hamaguchi
- Division of Infection Control and Prevention, Osaka University Hospital, 2-15 Yamadaoka, Suita, Osaka, 565-0871, Japan.
- Division of Fostering Required Medical Human Resources, Center for Infectious Disease Education and Research (CiDER), Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
- Department of Transformative Analysis for Human Specimen, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
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5
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Kim YC, Jun SW, Ahn YH. Single bacteria identification with second-harmonic generation in MoS 2. Biosens Bioelectron 2023; 241:115675. [PMID: 37725844 DOI: 10.1016/j.bios.2023.115675] [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: 07/19/2023] [Revised: 09/04/2023] [Accepted: 09/05/2023] [Indexed: 09/21/2023]
Abstract
Transition-metal dichalcogenides exhibit extraordinary optical nonlinearities, making them promising candidates for advanced photonic applications. Here, we present the microbial control over second-harmonic generation (SHG) in monolayer MoS2 and the identification of single-cell bacteria. Bacteria deposited on monolayer MoS2 induce a change in the SHG signal, in the form of anisotropic polarization responses that depend on the relative orientation of the bacteria with respect to the MoS2 crystallographic direction. The anisotropic enhancement is consistent with the presence of a tensile stress along the lateral direction of bacteria axis; SHG imaging is highly effective in monitoring biomaterial strain as low as 0.1%. We also investigate the ultraviolet-induced removal of single bacteria, through the SHG imaging of MoS2. By monitoring the transient SHG signals, we determine the rupture times for bacteria, which varies noticeably for each species. This allows us to distinguish specific bacteria that share habitats; SHG imaging is useful for label free identification of pathogens at the single cell levels such as E. coli and L. casei. This label-free detection and identification of pathogens at the single-cell level can have a profound impact on the development of diagnostic tools for various applications.
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Affiliation(s)
- Young Chul Kim
- Department of Physics and Department of Energy Systems Research, Ajou University, Suwon 16499, South Korea
| | - Seung Won Jun
- Department of Physics and Department of Energy Systems Research, Ajou University, Suwon 16499, South Korea
| | - Yeong Hwan Ahn
- Department of Physics and Department of Energy Systems Research, Ajou University, Suwon 16499, South Korea.
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6
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Kupczyk W, Maślak E, Railean-Plugaru V, Pomastowski P, Jackowski M, Buszewski B. Capillary Zone Electrophoresis in Tandem with Flow Cytometry in Viability Study of Various ATCC Bacterial Strains under Antibiotic Treatment. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19031833. [PMID: 35162856 PMCID: PMC8835228 DOI: 10.3390/ijerph19031833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/03/2022] [Accepted: 02/04/2022] [Indexed: 02/04/2023]
Abstract
The aim of this study was to develop an innovative method of examining bacterial survival using capillary zone electrophoresis (CZE) and flow cytometry (FC) as a reference method. For this purpose, standard strains of bacteria from the ATCC collection were used: Enterococcus faecalis ATCC 14506, Staphylococcus aureus ATCC 11632, Klebsiella pneumoniae ATCC 10031, Pseudomonas aeruginosa ATCC 27853, and Escherichia coli ATCC 25922, as well as seven antibiotics with different antimicrobial mechanisms of action. The ratio of live and dead cells in the tested sample in CZE measurements were calculated using our algorithm that takes into account the detection time. Results showed a high agreement between CZE and FC in the assessment of the percentage of live cells exposed to the stress factor in both antibiotic susceptibility and time-dependent assays. The applied measuring system to assess the effectiveness of antibiotic therapy in in vitro conditions is a method with great potential, and the data obtained with the use of CZE mostly correspond to the expected drug sensitivity according to EUCAST and CLSI guidelines.
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Affiliation(s)
- Wojciech Kupczyk
- Department of General, Gastroenterological, and Oncological Surgery Collegium Medicum, Nicolaus Copernicus University, Gagarina 7, 87-100 Toruń, Poland; (W.K.); (M.J.)
| | - Ewelina Maślak
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4 Str., 87-100 Toruń, Poland; (E.M.); (V.R.-P.); (P.P.)
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7 Str., 87-100 Toruń, Poland
| | - Viorica Railean-Plugaru
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4 Str., 87-100 Toruń, Poland; (E.M.); (V.R.-P.); (P.P.)
| | - Paweł Pomastowski
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4 Str., 87-100 Toruń, Poland; (E.M.); (V.R.-P.); (P.P.)
| | - Marek Jackowski
- Department of General, Gastroenterological, and Oncological Surgery Collegium Medicum, Nicolaus Copernicus University, Gagarina 7, 87-100 Toruń, Poland; (W.K.); (M.J.)
| | - Bogusław Buszewski
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4 Str., 87-100 Toruń, Poland; (E.M.); (V.R.-P.); (P.P.)
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7 Str., 87-100 Toruń, Poland
- Correspondence:
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7
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Duša F, Šalplachta J, Horká M, Lunerová K, Rosenbergová K, Kubíček O. Novel chip-based isoelectric focusing device for fractionation of bacteria prior to their mass spectrometry identification. Anal Chim Acta 2022; 1192:339333. [DOI: 10.1016/j.aca.2021.339333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 11/23/2021] [Accepted: 11/25/2021] [Indexed: 11/01/2022]
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8
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Vaghef-Koodehi A, Lapizco-Encinas BH. Microscale electrokinetic-based analysis of intact cells and viruses. Electrophoresis 2021; 43:263-287. [PMID: 34796523 DOI: 10.1002/elps.202100254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/08/2021] [Accepted: 11/11/2021] [Indexed: 12/11/2022]
Abstract
Miniaturized electrokinetic methods have proven to be robust platforms for the analysis and assessment of intact microorganisms, offering short response times and higher integration than their bench-scale counterparts. The present review article discusses three types of electrokinetic-based methodologies: electromigration or motion-based techniques, electrode-based electrokinetics, and insulator-based electrokinetics. The fundamentals of each type of methodology are discussed and relevant examples from recent reports are examined, to provide the reader with an overview of the state-of-the-art on the latest advancements on the analysis of intact cells and viruses with microscale electrokinetic techniques. The concluding remarks discuss the potential applications and future directions.
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Affiliation(s)
- Alaleh Vaghef-Koodehi
- Microscale Bioseparations Laboratory and Biomedical Engineering Department, Rochester Institute of Technology, Rochester, NY, USA
| | - Blanca H Lapizco-Encinas
- Microscale Bioseparations Laboratory and Biomedical Engineering Department, Rochester Institute of Technology, Rochester, NY, USA
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9
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Buszewski B, Maślak E, Złoch M, Railean-Plugaru V, Kłodzińska E, Pomastowski P. A new approach to identifying pathogens, with particular regard to viruses, based on capillary electrophoresis and other analytical techniques. Trends Analyt Chem 2021; 139:116250. [PMID: 34776563 PMCID: PMC8573725 DOI: 10.1016/j.trac.2021.116250] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Fast determination, identification and characterization of pathogens is a significant challenge in many fields, from industry to medicine. Standard approaches (e.g., culture media and biochemical tests) are known to be very time-consuming and labor-intensive. Conversely, screening techniques demand a quick and low-cost grouping of microbial isolates, and current analysis call for broad reports of pathogens, involving the application of molecular, microscopy, and electromigration techniques, DNA fingerprinting and also MALDI-TOF methods. The present COVID-19 pandemic is a crisis that affects rich and poor countries alike. Detection of SARS-CoV-2 in patient samples is a critical tool for monitoring disease spread, guiding therapeutic decisions and devising social distancing protocols. The goal of this review is to present an innovative methodology based on preparative separation of pathogens by electromigration techniques in combination with simultaneous analysis of the proteome, lipidome, and genome using laser desorption/ionization analysis.
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Affiliation(s)
- Bogusław Buszewski
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Torun, 87-100, Torun, Poland.,Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100, Torun, Poland
| | - Ewelina Maślak
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Torun, 87-100, Torun, Poland.,Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100, Torun, Poland
| | - Michał Złoch
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Torun, 87-100, Torun, Poland
| | - Viorica Railean-Plugaru
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Torun, 87-100, Torun, Poland
| | - Ewa Kłodzińska
- Institute of Sport - National Research Institute, Department of Analytical Chemistry and Instrumental Analysis, 01-982, Warsaw, Poland
| | - Paweł Pomastowski
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Torun, 87-100, Torun, Poland
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10
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Jabłońska-Wawrzycka A, Rogala P, Czerwonka G, Gałczyńska K, Drabik M, Dańczuk M. Ruthenium Complexes with 2-Pyridin-2-yl-1 H-benzimidazole as Potential Antimicrobial Agents: Correlation between Chemical Properties and Anti-Biofilm Effects. Int J Mol Sci 2021; 22:10113. [PMID: 34576276 PMCID: PMC8471145 DOI: 10.3390/ijms221810113] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/03/2021] [Accepted: 09/15/2021] [Indexed: 11/20/2022] Open
Abstract
Antimicrobial resistance is a growing public health concern that requires urgent action. Biofilm-associated resistance to antimicrobials begins at the attachment phase and increases as the biofilms maturate. Hence, interrupting the initial binding process of bacteria to surfaces is essential to effectively prevent biofilm-associated problems. Herein, we have evaluated the antibacterial and anti-biofilm activities of three ruthenium complexes in different oxidation states with 2-pyridin-2-yl-1H-benzimidazole (L1 = 2,2'-PyBIm): [(η6-p-cymene)RuIIClL1]PF6 (Ru(II) complex), mer-[RuIIICl3(CH3CN)L1]·L1·3H2O (Ru(III) complex), (H2L1)2[RuIIICl4(CH3CN)2]2[RuIVCl4(CH3CN)2]·2Cl·6H2O (Ru(III/IV) complex). The biological activity of the compounds was screened against Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa strains. The results indicated that the anti-biofilm activity of the Ru complexes at concentration of 1 mM was better than that of the ligand alone against the P. aeruginosa PAO1. It means that ligand, in combination with ruthenium ion, shows a synergistic effect. The effect of the Ru complexes on cell surface properties was determined by the contact angle and zeta potential values. The electric and physical properties of the microbial surface are useful tools for the examined aggregation phenomenon and disruption of the adhesion. Considering that intermolecular interactions are important and largely define the functions of compounds, we examined interactions in the crystals of the Ru complexes using the Hirshfeld surface analysis.
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Affiliation(s)
| | - Patrycja Rogala
- Institute of Chemistry, Jan Kochanowski University of Kielce, 7 Uniwersytecka Str., 25-406 Kielce, Poland;
| | - Grzegorz Czerwonka
- Institute of Biology, Jan Kochanowski University of Kielce, 7 Uniwersytecka Str., 25-406 Kielce, Poland; (G.C.); (K.G.)
| | - Katarzyna Gałczyńska
- Institute of Biology, Jan Kochanowski University of Kielce, 7 Uniwersytecka Str., 25-406 Kielce, Poland; (G.C.); (K.G.)
| | - Marcin Drabik
- Institute of Physics, Jan Kochanowski University of Kielce, 7 Uniwersytecka Str., 25-406 Kielce, Poland;
| | - Magdalena Dańczuk
- Faculty of Environmental, Geomatic and Energy Engineering, Kielce University of Technology, 7 Tysiąclecia Państwa Polskiego Ave., 25-314 Kielce, Poland;
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11
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Fabrication, tuning and performance analysis of polyacrylonitrile (PAN)-derived microfiltration membranes for bacteria removal from drinking water. KOREAN J CHEM ENG 2021. [DOI: 10.1007/s11814-020-0666-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Pauter K, Szultka-Młyńska M, Buszewski B. Determination and Identification of Antibiotic Drugs and Bacterial Strains in Biological Samples. Molecules 2020; 25:E2556. [PMID: 32486359 PMCID: PMC7321139 DOI: 10.3390/molecules25112556] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/27/2020] [Accepted: 05/29/2020] [Indexed: 12/22/2022] Open
Abstract
Antibiotics were initially natural substances. However, nowadays, they also include synthetic drugs, which show their activity against bacteria, killing or inhibiting their growth and division. Thanks to these properties, many antibiotics have quickly found practical application in the fight against infectious diseases such as tuberculosis, syphilis, gastrointestinal infections, pneumonia, bronchitis, meningitis and septicemia. Antibiotic resistance is currently a detrimental problem; therefore, in addition to the improvement of antibiotic therapy, attention should also be paid to active metabolites in the body, which may play an important role in exacerbating the existing problem. Taking into account the clinical, cognitive and diagnostic purposes of drug monitoring, it is important to select an appropriate analytical method that meets all the requirements. The detection and identification of the microorganism responsible for the infection is also an essential factor in the implementation of appropriate antibiotic therapy. In recent years, clinical microbiology laboratories have experienced revolutionary changes in the way microorganisms are identified. The MALDI-TOF MS technique may be interesting, especially in some areas where a quick analysis is required, as is the case with clinical microbiology. This method is not targeted, which means that no prior knowledge of the infectious agent is required, since identification is based on a database match.
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Affiliation(s)
- Katarzyna Pauter
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin 7, 87-100 Torun, Poland; (K.P.); (B.B.)
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Wilenska 4, 87-100 Torun, Poland
| | - Małgorzata Szultka-Młyńska
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin 7, 87-100 Torun, Poland; (K.P.); (B.B.)
| | - Bogusław Buszewski
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin 7, 87-100 Torun, Poland; (K.P.); (B.B.)
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Wilenska 4, 87-100 Torun, Poland
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13
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Yongabi D, Khorshid M, Gennaro A, Jooken S, Duwé S, Deschaume O, Losada-Pérez P, Dedecker P, Bartic C, Wübbenhorst M, Wagner P. QCM-D Study of Time-Resolved Cell Adhesion and Detachment: Effect of Surface Free Energy on Eukaryotes and Prokaryotes. ACS APPLIED MATERIALS & INTERFACES 2020; 12:18258-18272. [PMID: 32223273 DOI: 10.1021/acsami.0c00353] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Cell-material interactions are crucial for many biomedical applications, including medical implants, tissue engineering, and biosensors. For implants, while the adhesion of eukaryotic host cells is desirable, bacterial adhesion often leads to infections. Surface free energy (SFE) is an important parameter that controls short- and long-term eukaryotic and prokaryotic cell adhesion. Understanding its effect at a fundamental level is essential for designing materials that minimize bacterial adhesion. Most cell adhesion studies for implants have focused on correlating surface wettability with mammalian cell adhesion and are restricted to short-term time scales. In this work, we used quartz crystal microbalance with dissipation monitoring (QCM-D) and electrical impedance analysis to characterize the adhesion and detachment of S. cerevisiae and E. coli, serving as model eukaryotic and prokaryotic cells within extended time scales. Measurements were performed on surfaces displaying different surface energies (Au, SiO2, and silanized SiO2). Our results demonstrate that tuning the surface free energy of materials is a useful strategy for selectively promoting eukaryotic cell adhesion and preventing bacterial adhesion. Specifically, we show that under flow and steady-state conditions and within time scales up to ∼10 h, a high SFE, especially its polar component, enhances S. cerevisiae adhesion and hinders E. coli adhesion. In the long term, however, both cells tend to detach, but less detachment occurs on surfaces with a high dispersive SFE contribution. The conclusions on S. cerevisiae are also valid for a second eukaryotic cell type, being the human embryonic kidney (HEK) cells on which we performed the same analysis for comparison. Furthermore, each cell adhesion phase is associated with unique cytoskeletal viscoelastic states, which are cell-type-specific and surface free energy-dependent and provide insights into the underlying adhesion mechanisms.
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Affiliation(s)
- Derick Yongabi
- Department of Physics and Astronomy, Laboratory for Soft Matter and Biophysics, KU Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
| | - Mehran Khorshid
- Department of Physics and Astronomy, Laboratory for Soft Matter and Biophysics, KU Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
| | - Alessia Gennaro
- Department of Physics and Astronomy, Laboratory for Soft Matter and Biophysics, KU Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
| | - Stijn Jooken
- Department of Physics and Astronomy, Laboratory for Soft Matter and Biophysics, KU Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
| | - Sam Duwé
- Department of Chemistry, Laboratory for Nanobiology, KU Leuven, Celestinenlaan 200 G, B-3001, Leuven, Belgium
| | - Olivier Deschaume
- Department of Physics and Astronomy, Laboratory for Soft Matter and Biophysics, KU Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
| | - Patricia Losada-Pérez
- Experimental Soft Matter and Thermal Physics Group, Université Libre de Bruxelles (ULB), Campus La Plaine, CP223, Boulevard du Triomphe, 1050 Brussels, Belgium
| | - Peter Dedecker
- Department of Chemistry, Laboratory for Nanobiology, KU Leuven, Celestinenlaan 200 G, B-3001, Leuven, Belgium
| | - Carmen Bartic
- Department of Physics and Astronomy, Laboratory for Soft Matter and Biophysics, KU Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
| | - Michael Wübbenhorst
- Department of Physics and Astronomy, Laboratory for Soft Matter and Biophysics, KU Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
| | - Patrick Wagner
- Department of Physics and Astronomy, Laboratory for Soft Matter and Biophysics, KU Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
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14
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Deciphering biophysical signatures for microbiological applications. Lasers Med Sci 2019; 35:1493-1501. [DOI: 10.1007/s10103-019-02936-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Accepted: 12/05/2019] [Indexed: 12/31/2022]
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15
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Chylewska A, Ogryzek M, Makowski M. Modern Approach to Medical Diagnostics - the Use of Separation Techniques in Microorganisms Detection. Curr Med Chem 2019; 26:121-165. [DOI: 10.2174/0929867324666171023164813] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Revised: 04/20/2017] [Accepted: 05/20/2016] [Indexed: 11/22/2022]
Abstract
Background:Analytical chemistry and biotechnology as an interdisciplinary fields of science have been developed during many years and are experiencing significant growth, to cover a wide range of microorganisms separation techniques and methods, utilized for medical therapeutic and diagnostic purposes. Currently scientific reports contribute by introducing electrophoretical and immunological methods and formation of devices applied in food protection (avoiding epidemiological diseases) and healthcare (safety ensuring in hospitals).Methods:Electrophoretic as well as nucleic-acid-based or specific immunological methods have contributed tremendously to the advance of analyses in recent three decades, particularly in relation to bacteria, viruses and fungi identifications, especially in medical in vitro diagnostics, as well as in environmental or food protection.Results:The paper presents the pathogen detection competitiveness of these methods against conventional ones, which are still too time consuming and also labor intensive. The review is presented in several parts following the current trends in improved pathogens separation and detection methods and their subsequent use in medical diagnosis.Discussion:Part one, consists of elemental knowledge about microorganisms as an introduction to their characterization: descriptions of divisions, sizes, membranes (cells) components. Second section includes the development, new technological and practical solution descriptions used in electrophoretical procedures during microbes analyses, with special attention paid to bio-samples analyses like blood, urine, lymph or wastewater. Third part covers biomolecular areas that have created a basis needed to identify the progress, limitations and challenges of nucleic-acid-based and immunological techniques discussed to emphasize the advantages of new separative techniques in selective fractionating of microorganisms.
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Affiliation(s)
- Agnieszka Chylewska
- Laboratory of Intermolecular Interactions, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80- 308 Gdansk, Poland
| | - Małgorzata Ogryzek
- Laboratory of Intermolecular Interactions, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80- 308 Gdansk, Poland
| | - Mariusz Makowski
- Laboratory of Intermolecular Interactions, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80- 308 Gdansk, Poland
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16
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Kolewe KW, Kalasin S, Shave M, Schiffman JD, Santore MM. Mechanical Properties and Concentrations of Poly(ethylene glycol) in Hydrogels and Brushes Direct the Surface Transport of Staphylococcus aureus. ACS APPLIED MATERIALS & INTERFACES 2019; 11:320-330. [PMID: 30595023 PMCID: PMC6771038 DOI: 10.1021/acsami.8b18302] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Surface-associated transport of flowing bacteria, including cell rolling, is a mechanism for otherwise immobile bacteria to migrate on surfaces and could be associated with biofilm formation or the spread of infection. This work demonstrates how the moduli and/or local polymer concentration play critical roles in sustaining contact, dynamic adhesion, and transport of bacterial cells along a hydrogel or hydrated brush surface. In particular, stiffer more concentrated hydrogels and brushes maintained the greatest dynamic contact, still allowing cells to travel along the surface in flow. This study addressed how the mechanical properties, molecular architectures, and thicknesses of minimally adhesive poly(ethylene glycol) (PEG)-based coatings influence the flow-driven surface motion of Staphylococcus aureus MS2 cells. Three protein-repellant PEG-dimethylacrylate hydrogel films (∼100 μm thick) and two protein-repellant PEG brushes (8-16 nm thick) were sufficiently fouling-resistant to prevent the accumulation of flowing bacteria. However, the rolling or hopping-like motions of gently flowing S. aureus cells along the surfaces were specific to the particular hydrogel or brush, distinguishing these coatings in terms of their mechanical properties (with moduli from 2 to 1300 kPa) or local PEG concentrations (in the range 10-50% PEG). On the stiffer hydrogel coatings having higher PEG concentrations, S. aureus exhibited long runs of surface rolling, 20-50 μm in length, an increased tendency of cells to repeatedly return to some surfaces after rolling and escaping, and relatively long integrated contact times. By contrast, on the softer more dilute hydrogels, bacteria tended to encounter the surface for brief periods before escaping without return. The dynamic adhesion and motion signatures of the cells on the two brushes were bracketed by those on the soft and stiff hydrogels, demonstrating that PEG coating thickness was not important in these studies where the vertically oriented surfaces minimized the impact of gravitational forces. Control studies with similarly sized poly(ethylene oxide)-coated rigid spherical microparticles, that also did not arrest on the PEG coatings, established that the bacterial skipping and rolling signatures were specific to the S. aureus cells and not simply diffusive. Dynamic adhesion of the S. aureus cells on the PEG hydrogel surfaces correlated well with quiescent 24 h adhesion studies in the literature, despite the orientation of the flow studies that eliminated the influence of gravity on bacteria-coating normal forces.
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Affiliation(s)
- Kristopher W. Kolewe
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003-9303, United States
| | - Surachate Kalasin
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003-9303, United States
| | - Molly Shave
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003-9303, United States
| | - Jessica D. Schiffman
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003-9303, United States
| | - Maria M. Santore
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003-9303, United States
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17
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Muzzio NE, Pasquale MA, Diamanti E, Gregurec D, Moro MM, Azzaroni O, Moya SE. Enhanced antiadhesive properties of chitosan/hyaluronic acid polyelectrolyte multilayers driven by thermal annealing: Low adherence for mammalian cells and selective decrease in adhesion for Gram-positive bacteria. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 80:677-687. [DOI: 10.1016/j.msec.2017.07.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 05/30/2017] [Accepted: 07/07/2017] [Indexed: 01/02/2023]
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18
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Akbar W, Noor MR, Kowal K, Syed T, Soulimane T, Basim GB. Characterization and antibacterial properties of nanoboron powders and nanoboron powder coated textiles. ADV POWDER TECHNOL 2017. [DOI: 10.1016/j.apt.2016.11.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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19
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Crispo F, Capece A, Guerrieri A, Romano P. Capillary zone electrophoresis as alternative tool for rapid identification and quantification of viable Saccharomyces cerevisiae cells. Lebensm Wiss Technol 2016. [DOI: 10.1016/j.lwt.2015.12.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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Louzao I, Sui C, Winzer K, Fernandez-Trillo F, Alexander C. Cationic polymer mediated bacterial clustering: Cell-adhesive properties of homo- and copolymers. Eur J Pharm Biopharm 2015; 95:47-62. [DOI: 10.1016/j.ejpb.2015.05.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 05/15/2015] [Accepted: 05/26/2015] [Indexed: 11/16/2022]
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21
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Determination of methicillin-resistant and methicillin-susceptible Staphylococcus aureus bacteria in blood by capillary zone electrophoresis. Anal Chim Acta 2015; 868:67-72. [DOI: 10.1016/j.aca.2015.02.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 01/28/2015] [Accepted: 02/01/2015] [Indexed: 12/13/2022]
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22
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Horká M, Karásek P, Růžička F, Dvořáčková M, Sittová M, Roth M. Separation of methicillin-resistant from methicillin-susceptible Staphylococcus aureus by electrophoretic methods in fused silica capillaries etched with supercritical water. Anal Chem 2014; 86:9701-8. [PMID: 25207657 DOI: 10.1021/ac502254f] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Identification and prevention of Staphylococcus aureus-caused infections may benefit from a fast and dependable method to distinguish between the methicillin-resistant (MRSA) and methicillin-susceptible (MSSA) S. aureus strains. The current methods involving polymerase chain reaction and/or other molecular tests are usually laborious and time-consuming. We describe here a fast and low-cost method employing capillary zone electrophoresis (CZE) to distinguish between MRSA and MSSA. The method makes use of a supercritical water-treated fused silica capillary, the inner surface of which has subsequently been modified with (3-glycidyloxypropyl)trimethoxysilane. With optimized proportions of suitable additives to the background electrolyte, a CZE separation of MRSA from MSSA may be completed within 12 min. The cells were baseline-resolved, and resolution was determined to be 3.61. The isoelectric points of MSSA and MRSA were found to be the same for both groups of these strains, pI = 3.4.
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Affiliation(s)
- Marie Horká
- Institute of Analytical Chemistry of the ASCR , v. v. i., Veveří 97, 602 00 Brno, Czech Republic
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23
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Birkenhauer E, Neethirajan S. Characterization of electrical surface properties of mono- and co-cultures of Pseudomonas aeruginosa and methicillin-resistant Staphylococcus aureus using Kelvin probe force microscopy. RSC Adv 2014. [DOI: 10.1039/c4ra07446g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Quantitative nanoscale surface potential measurement of individual pathogenic bacterial cells for understanding the adhesion kinetics using Kelvin probe force microscopy.
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Affiliation(s)
- Eric Birkenhauer
- BioNano Laboratory
- School of Engineering
- University of Guelph
- Guelph, Canada
| | - Suresh Neethirajan
- BioNano Laboratory
- School of Engineering
- University of Guelph
- Guelph, Canada
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24
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25
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Use of electrophoretic techniques and MALDI–TOF MS for rapid and reliable characterization of bacteria: analysis of intact cells, cell lysates, and “washed pellets”. Anal Bioanal Chem 2013; 405:3165-75. [DOI: 10.1007/s00216-013-6754-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 12/18/2012] [Accepted: 01/16/2013] [Indexed: 11/29/2022]
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26
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Buszewski B, Hrynkiewicz K, Dziubakiewicz E. Application of CZE in the differentiation of Staphylococcus aureus strains. Methods Mol Biol 2013; 919:149-154. [PMID: 22976098 DOI: 10.1007/978-1-62703-029-8_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Precise, fast, and cheap identification of pathogenic bacteria is a key factor of microbial diagnostics. Application of analytical techniques can provide new possibilities in this regard. The bacterial pathogen Staphylococcus aureus is responsible for a number of serious human infections which are hard for eradication since the number of multidrug resistant isolates is increasing. In the present chapter, we describe novel methods based on capillary zone electrophoresis (CZE) and (as confirmation of these results) molecular analysis of a part of the coag gene for identification and differentiation of S. aureus strains.
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Affiliation(s)
- Bogusław Buszewski
- Chair of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Torun, Poland.
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27
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Uskoković V. Dynamic Light Scattering Based Microelectrophoresis: Main Prospects and Limitations. J DISPER SCI TECHNOL 2012; 33:1762-1786. [PMID: 23904690 PMCID: PMC3726226 DOI: 10.1080/01932691.2011.625523] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Microelectrophoresis based on the dynamic light scattering (DLS) effect has been a major tool for assessing and controlling the conditions for stability of colloidal systems. However, both the DLS methods for characterization of the hydrodynamic size of dispersed submicron particles and the theory behind the electrokinetic phenomena are associated with fundamental and practical approximations that limit their sensitivity and information output. Some of these fundamental limitations, including the spherical approximation of DLS measurements and an inability of microelectrophoretic analyses of colloidal systems to detect discrete charges and differ between differently charged particle surfaces due to rotational diffusion and particle orientation averaging, are revisited in this work. Along with that, the main prospects of these two analytical methods are mentioned. A detailed review of the role of zeta potential in processes of biochemical nature is given too. It is argued that although zeta potential has been used as one of the main parameters in controlling the stability of colloidal dispersions, its application potentials are much broader. Manipulating surface charges of interacting species in designing complex soft matter morphologies using the concept of zeta potential, intensively investigated recently, is given as one of the examples. Branching out from the field of colloid chemistry, DLS and zeta potential analyses are now increasingly finding application in drug delivery, biotechnologies, physical chemistry of nanoscale phenomena and other research fields that stand on the frontier of the contemporary science. Coupling the DLS-based microelectrophoretic systems with complementary characterization methods is mentioned as one of the prosperous paths for increasing the information output of these two analytical techniques.
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Affiliation(s)
- Vuk Uskoković
- Therapeutic Micro and Nanotechnology Laboratory, Department of Bioengineering and Therapeutic Sciences, University of California, Mission Bay Campus, San Francisco, California, USA
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28
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Chan PH, Chen YC. Human serum albumin stabilized gold nanoclusters as selective luminescent probes for Staphylococcus aureus and methicillin-resistant Staphylococcus aureus. Anal Chem 2012; 84:8952-6. [PMID: 23088348 DOI: 10.1021/ac302417k] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In this work, human serum albumin (HSA) stabilized gold nanoclusters (HSA-AuNCs) with reddish photoluminescence were used as sensing probes for pathogenic bacteria including Enterobacter cloacae, Escherichia coli J96, Pseudomonas aeruginosa, pandrug-resistant Acinetobacter baumannii (PDRAB), Staphylococcus aureus, methicillin-resistant S. aureus (MRSA), Streptococcus pyogenes, and vancomycin-resistant Enterococcus faecalis (VRE). We discovered that HSA-AuNCs have unique affinity with S. aureus and MRSA. In addition to demonstrating the selective sensing ability of HSA-AuNCs toward S. aureus and MRSA, the binding peptide motifs identified from HSA-AuNCs were characterized by mass spectrometry. The identified binding peptides were further used as the reducing and stabilizing agents for generation of peptide-bound AuNCs (Pep-AuNCs). The generated Pep-AuNCs were demonstrated to have the binding affinities with S. aureus and MRSA.
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29
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Bulwan M, Wójcik K, Zapotoczny S, Nowakowska M. Chitosan-based ultrathin films as antifouling, anticoagulant and antibacterial protective coatings. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 23:1963-80. [PMID: 21967904 DOI: 10.1163/092050611x601711] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Ultrathin antifouling and antibacterial protective nanocoatings were prepared from ionic derivatives of chitosan using layer-by-layer deposition methodology. The surfaces of silicon, and glass protected by these nanocoatings were resistant to non-specific adsorption of proteins disregarding their net charges at physiological conditions (positively charged TGF-β1 growth factor and negatively charged bovine serum albumin) as well as human plasma components. The coatings also preserved surfaces from the formation of bacterial (Staphylococcus aureus) biofilm as shown using microscopic studies (SEM, AFM) and the MTT viability test. Moreover, the chitosan-based films adsorbed onto glass surface demonstrated the anticoagulant activity towards the human blood. The antifouling and antibacterial actions of the coatings were correlated with their physicochemical properties. The studied biologically relevant properties were also found to be dependent on the thickness of those nanocoatings. These materials are promising for biomedical applications, e.g., as protective coatings for medical devices, anticoagulant coatings and protective layers in membranes.
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Affiliation(s)
- Maria Bulwan
- a Faculty of Chemistry, Jagiellonian University , Ingardena 3 , 30-060 , Krakow , Poland
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30
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Correlative time-resolved fluorescence microscopy to assess antibiotic diffusion-reaction in biofilms. Antimicrob Agents Chemother 2012; 56:3349-58. [PMID: 22450986 DOI: 10.1128/aac.00216-12] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
The failure of antibiotics to inactivate in vivo pathogens organized in biofilms has been shown to trigger chronic infections. In addition to mechanisms involving specific genetic or physiological cell properties, antibiotic sorption and/or reaction with biofilm components may lessen the antibiotic bioavailability and consequently decrease their efficiency. To assess locally and accurately the antibiotic diffusion-reaction, we used for the first time a set of advanced fluorescence microscopic tools (fluorescence recovery after photobleaching, fluorescence correlation spectroscopy, and fluorescence lifetime imaging) that offer a spatiotemporal resolution not available with the commonly used time-lapse confocal imaging method. This set of techniques was used to characterize the dynamics of fluorescently labeled vancomycin in biofilms formed by two Staphylococcus aureus human isolates. We demonstrate that, at therapeutic concentrations of vancomycin, the biofilm matrix was not an obstacle to the diffusion-reaction of the antibiotic that can reach all cells through the biostructure.
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31
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Saito S, Massie TL, Maeda T, Nakazumi H, Colyer CL. On-Column Labeling of Gram-Positive Bacteria with a Boronic Acid Functionalized Squarylium Cyanine Dye for Analysis by Polymer-Enhanced Capillary Transient Isotachophoresis. Anal Chem 2012; 84:2452-8. [DOI: 10.1021/ac2031145] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Shingo Saito
- Department of Chemistry, Wake Forest University, Winston-Salem, North Carolina 27109,
United States
- Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama
338-8570, Japan
| | - Tara L. Massie
- Department of Chemistry, Wake Forest University, Winston-Salem, North Carolina 27109,
United States
| | - Takeshi Maeda
- Graduate
School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Hiroyuki Nakazumi
- Graduate
School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Christa L. Colyer
- Department of Chemistry, Wake Forest University, Winston-Salem, North Carolina 27109,
United States
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33
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Szumski M, Kłodzińska E, Dziubakiewicz E, Hrynkiewicz K, Buszewski B. EFFECT OF APPLIED VOLTAGE ON VIABILITY OF BACTERIA DURING SEPARATION UNDER ELECTROPHORETIC CONDITIONS. J LIQ CHROMATOGR R T 2011. [DOI: 10.1080/10826076.2011.593223] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Michał Szumski
- a Chair of Environmental Chemistry and Bioanalytics, Faculty of Chemistry , Nicolaus Copernicus University , Torun , Poland
| | - Ewa Kłodzińska
- a Chair of Environmental Chemistry and Bioanalytics, Faculty of Chemistry , Nicolaus Copernicus University , Torun , Poland
| | - Ewelina Dziubakiewicz
- a Chair of Environmental Chemistry and Bioanalytics, Faculty of Chemistry , Nicolaus Copernicus University , Torun , Poland
| | - Katarzyna Hrynkiewicz
- b Department of Microbiology , Institute of General and Molecular Biology, Nicolaus Copernicus University , Torun , Poland
| | - Bogusław Buszewski
- a Chair of Environmental Chemistry and Bioanalytics, Faculty of Chemistry , Nicolaus Copernicus University , Torun , Poland
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34
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Subirats X, Blaas D, Kenndler E. Recent developments in capillary and chip electrophoresis of bioparticles: Viruses, organelles, and cells. Electrophoresis 2011; 32:1579-90. [PMID: 21647924 DOI: 10.1002/elps.201100048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Revised: 02/18/2011] [Accepted: 02/20/2011] [Indexed: 11/09/2022]
Abstract
In appropriate aqueous buffer solutions, biological particles usually exhibit a particular electric surface charge due to exposed charged or chargeable functional groups (amino acid residues, acidic carbohydrate moieties, etc.). Consequently, these bioparticles can migrate in solution under the influence of an electric field allowing separation according to their electrophoretic mobilities or their pI values. Based on these properties, electromigration methods are of eminent interest for the characterization, separation, and detection of such particles. The present review discusses the research papers published between 2008 and 2010 dealing with isoelectric focusing and zone electrophoresis of viruses, organelles and microorganisms (bacteria and yeast cells) in the capillary and the chip format.
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Affiliation(s)
- Xavier Subirats
- Max F. Perutz Laboratories, Medical University of Vienna, Vienna Biocenter (VBC), Vienna, Austria.
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35
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Horká M, Růžička F, Kubesová A, Němcová E, Šlais K. Separation of phenotypically indistinguishable Candida species, C. orthopsilosis, C. metapsilosis and C. parapsilosis, by capillary electromigration techniques. J Chromatogr A 2011; 1218:3900-7. [DOI: 10.1016/j.chroma.2011.04.057] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Revised: 04/19/2011] [Accepted: 04/20/2011] [Indexed: 12/19/2022]
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36
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Affiliation(s)
- Nicholas W. Frost
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455
| | - Meng Jing
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455
| | - Michael T. Bowser
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455
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37
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Horká M, Horký J, Kubesová A, Mazanec K, Matoušková H, Šlais K. Electromigration techniques – a fast and economical tool for differentiation of similar strains of microorganisms. Analyst 2010; 135:1636-44. [DOI: 10.1039/c0an00083c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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