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Sen S, Sarkar P. Impedance nanobiosensor based on enzyme-conjugated biosynthesized gold nanoparticles for the detection of Gram-positive bacteria. Biotechnol Prog 2024; 40:e3421. [PMID: 38160432 DOI: 10.1002/btpr.3421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 11/02/2023] [Accepted: 12/01/2023] [Indexed: 01/03/2024]
Abstract
In this report, gold nanoparticles (GNPS) were synthesized using cell-free extracts of seven different isolates, namely, Pseudomonas aerogenosa CEBP2, Pseudomonas sp. CEBP1, Pseudomonas pseudoalcaligenes CEB1G, Acinetobactor baumani CEBS1, Cuprividus sp. CEB3, Micrococcus luteus CUB12, and Pandoraea sp. CUB2S. The spectroscopic (UV-vis, FTIR, DLS, XRD, EDS) and microscopic (FESEM, TEM) results confirm the reduction of Au3+ to Au0 in the presence of biomolecules having reducing as well as self-stabilizing activity. In this green synthesis approach, the average particle size of biosynthesized GNPS might vary (4-60 nm) depending on the bacterial species, pH of the media, incubation time, and temperature. In this study, GSH-modified BSGNPs (Au-GSH) have shown antimicrobial activity with better stability against Gram-positive bacteria. After conjugation of lysozyme with Au-GSH (lyso@Au-GSH), the zone of inhibition was enhanced from 12 to 23 mm (Au-GSH). The TEM study shows the spherical GNP (16.65 ± 2.84) turns into a flower-shaped GNP (22.22 ± 3.12) after conjugation with lysozyme due to the formation of the protein corona. Furthermore, the nanobioconjugate (lyso@Au-GSH) was immobilized with Nafion on a glassy carbon electrode to fabricate a label-free impedance biosensor that is highly sensitive to monitor changes in the transducer surface due to biomolecular interactions. The uniquely designed biosensor could selectively detect Gram-positive bacteria in the linear range of 3.0 × 101-3 × 1010 cfu mL-1 with RE <5%. The proposed simplest biosensor exhibited good reproducibility (RSD = 3.1%) and excellent correlation (R2 = 0.999) with the standard plate count method, making it suitable for monitoring Gram-positive bacterial contamination in biofluids, food, and environmental samples.
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Affiliation(s)
- Sarani Sen
- Department of Polymer Science and Technology, University of Calcutta, Kolkata, West Bengal, India
- National Institute of Technology Durgapur, Durgapur, West Bengal, India
| | - Priyabrata Sarkar
- Department of Polymer Science and Technology, University of Calcutta, Kolkata, West Bengal, India
- Calcutta Institute of Technology, Howrah, West Bengal, India
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2
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Iriya R, Braswell B, Mo M, Zhang F, Haydel SE, Wang S. Deep Learning-Based Culture-Free Bacteria Detection in Urine Using Large-Volume Microscopy. Biosensors (Basel) 2024; 14:89. [PMID: 38392008 PMCID: PMC10887190 DOI: 10.3390/bios14020089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/02/2024] [Accepted: 02/02/2024] [Indexed: 02/24/2024]
Abstract
Bacterial infections, increasingly resistant to common antibiotics, pose a global health challenge. Traditional diagnostics often depend on slow cell culturing, leading to empirical treatments that accelerate antibiotic resistance. We present a novel large-volume microscopy (LVM) system for rapid, point-of-care bacterial detection. This system, using low magnification (1-2×), visualizes sufficient sample volumes, eliminating the need for culture-based enrichment. Employing deep neural networks, our model demonstrates superior accuracy in detecting uropathogenic Escherichia coli compared to traditional machine learning methods. Future endeavors will focus on enriching our datasets with mixed samples and a broader spectrum of uropathogens, aiming to extend the applicability of our model to clinical samples.
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Affiliation(s)
- Rafael Iriya
- Biodesign Center for Biosensors and Bioelectronics, Arizona State University, Tempe, AZ 85287, USA; (R.I.); (B.B.); (M.M.); (F.Z.); (S.E.H.)
- School of Electrical and Computer Engineering, Tempe, AZ 85287, USA
| | - Brandyn Braswell
- Biodesign Center for Biosensors and Bioelectronics, Arizona State University, Tempe, AZ 85287, USA; (R.I.); (B.B.); (M.M.); (F.Z.); (S.E.H.)
- School of Molecular Sciences, Arizona State University, Tempe, AZ 85287, USA
| | - Manni Mo
- Biodesign Center for Biosensors and Bioelectronics, Arizona State University, Tempe, AZ 85287, USA; (R.I.); (B.B.); (M.M.); (F.Z.); (S.E.H.)
- School of Molecular Sciences, Arizona State University, Tempe, AZ 85287, USA
| | - Fenni Zhang
- Biodesign Center for Biosensors and Bioelectronics, Arizona State University, Tempe, AZ 85287, USA; (R.I.); (B.B.); (M.M.); (F.Z.); (S.E.H.)
| | - Shelley E. Haydel
- Biodesign Center for Biosensors and Bioelectronics, Arizona State University, Tempe, AZ 85287, USA; (R.I.); (B.B.); (M.M.); (F.Z.); (S.E.H.)
- School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA
| | - Shaopeng Wang
- Biodesign Center for Biosensors and Bioelectronics, Arizona State University, Tempe, AZ 85287, USA; (R.I.); (B.B.); (M.M.); (F.Z.); (S.E.H.)
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
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3
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Baryzewska A, Roth C, Seeberger PH, Zeininger L. In situ Tracking of Exoenzyme Activity Using Droplet Luminescence Concentrators for Ratiometric Detection of Bacteria. ACS Sens 2023; 8:4143-4151. [PMID: 37933952 PMCID: PMC10683504 DOI: 10.1021/acssensors.3c01385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 09/26/2023] [Accepted: 10/17/2023] [Indexed: 11/08/2023]
Abstract
We demonstrate a novel, rapid, and cost-effective biosensing paradigm that is based on an in situ visualization of bacterial exoenzyme activity using biphasic Janus emulsion droplets. Sensitization of the droplets toward dominant extracellular enzymes of bacterial pathogens is realized via selective functionalization of one hemisphere of Janus droplets with enzyme-cleavable surfactants. Surfactant cleavage results in an interfacial tension increase at the respective droplet interface, which readily transduces into a microscopically detectable change of the internal droplet morphologies. A macroscopic fluorescence read-out of such morphological transitions is obtained via ratiometrically recording the angle-dependent anisotropic emission signatures of perylene-containing droplets from two different angles. The optical read-out method facilitates detection of marginal morphological responses of polydisperse droplet samples that can be easily produced in any environment. The performance of Janus droplets as powerful optical transducers and signal amplifiers is highlighted by rapid (<4 h) and cost-effective antibody and DNA-free identification of three major foodborne pathogens, with detection thresholds of below 10 CFU mL-1 for Salmonella and <102 to 103 CFU mL-1 for Listeria and Escherichia coli.
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Affiliation(s)
- Agata
W. Baryzewska
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Muehlenberg 1, 14476 Potsdam, Germany
| | - Christian Roth
- Department
of Biomolecular Systems, Max Planck Institute
of Colloids and Interfaces, Am Muehlenberg 1, 14476 Potsdam, Germany
| | - Peter H. Seeberger
- Department
of Biomolecular Systems, Max Planck Institute
of Colloids and Interfaces, Am Muehlenberg 1, 14476 Potsdam, Germany
| | - Lukas Zeininger
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Muehlenberg 1, 14476 Potsdam, Germany
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4
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Kaci K, Enebral-Romero E, Martínez-Periñán E, Garrido M, Pérez EM, López-Diego D, Luna M, González-de-Rivera G, García-Mendiola T, Lorenzo E. Multiplex Portable Biosensor for Bacteria Detection. Biosensors (Basel) 2023; 13:958. [PMID: 37998133 PMCID: PMC10669278 DOI: 10.3390/bios13110958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/11/2023] [Accepted: 10/23/2023] [Indexed: 11/25/2023]
Abstract
An advanced, cost-effective, and portable DNA biosensor capable of detecting multiple bacteria simultaneously has been developed. The biosensor comprises a fast and inexpensive potentiostat that controls the applied potential to a screen-printed electrochemical array platform functionalized with MoS2 flakes and bacterial DNA probes. The current response obtained by à la carte thionine functionalized carbon nanodots (Ty-CDs) is monitored as an electrochemical indicator of the hybridization event. The design of the potentiostat prioritizes achieving an optimal signal-to-noise ratio and incorporates a user-friendly interface compatible with various devices, including computers, mobile phones, and tablets. The device is compact, lightweight, and manufactured at a low cost. The key components of the potentiostat include a data acquisition board capable of analyzing multiple samples simultaneously and a controller board. The results of this study confirm the ability of the multiplex portable biosensor to successfully detect specific bacterial DNA sequences, demonstrating its reliability and superior performance compared with a traditional, more complex, and laboratory-oriented potentiostat.
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Affiliation(s)
- Karim Kaci
- HCTLab, Escuela Politécnica Superior, Universidad Autónoma de Madrid, 28049 Madrid, Spain; (K.K.); (G.G.-d.-R.)
| | - Estefanía Enebral-Romero
- Departamento de Química Analítica y Análisis Instrumental, Universidad Autónoma de Madrid, 28049 Madrid, Spain; (E.E.-R.); (E.M.-P.); (E.L.)
- IMDEA-Nanociencia, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain; (M.G.); (E.M.P.)
| | - Emiliano Martínez-Periñán
- Departamento de Química Analítica y Análisis Instrumental, Universidad Autónoma de Madrid, 28049 Madrid, Spain; (E.E.-R.); (E.M.-P.); (E.L.)
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Marina Garrido
- IMDEA-Nanociencia, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain; (M.G.); (E.M.P.)
| | - Emilio M. Pérez
- IMDEA-Nanociencia, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain; (M.G.); (E.M.P.)
| | - David López-Diego
- Instituto de Micro y Nanotecnología IMN-CNM, CSIC (CEI UAM+CSIC), 28760 Madrid, Spain; (D.L.-D.); (M.L.)
| | - Mónica Luna
- Instituto de Micro y Nanotecnología IMN-CNM, CSIC (CEI UAM+CSIC), 28760 Madrid, Spain; (D.L.-D.); (M.L.)
| | | | - Tania García-Mendiola
- Departamento de Química Analítica y Análisis Instrumental, Universidad Autónoma de Madrid, 28049 Madrid, Spain; (E.E.-R.); (E.M.-P.); (E.L.)
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Encarnación Lorenzo
- Departamento de Química Analítica y Análisis Instrumental, Universidad Autónoma de Madrid, 28049 Madrid, Spain; (E.E.-R.); (E.M.-P.); (E.L.)
- IMDEA-Nanociencia, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain; (M.G.); (E.M.P.)
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
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Akhtarian S, Doostmohammadi A, Archonta DE, Kraft G, Brar SK, Rezai P. Microfluidic Sensor Based on Cell-Imprinted Polymer-Coated Microwires for Conductometric Detection of Bacteria in Water. Biosensors (Basel) 2023; 13:943. [PMID: 37887136 PMCID: PMC10605092 DOI: 10.3390/bios13100943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 10/28/2023]
Abstract
The rapid, inexpensive, and on-site detection of bacterial contaminants using highly sensitive and specific microfluidic sensors is attracting substantial attention in water quality monitoring applications. Cell-imprinted polymers (CIPs) have emerged as robust, cost-effective, and versatile recognition materials with selective binding sites for capturing whole bacteria. However, electrochemical transduction of the binding event to a measurable signal within a microfluidic device to develop easy-to-use, compact, portable, durable, and affordable sensors remains a challenge. For this paper, we employed CIP-functionalized microwires (CIP-MWs) with an affinity towards E. coli and integrated them into a low-cost microfluidic sensor to measure the conductometric transduction of CIP-bacteria binding events. The sensor comprised two CIP-MWs suspended perpendicularly to a PDMS microchannel. The inter-wire electrical resistance of the microchannel was measured before, during, and after exposure of CIP-MWs to bacteria. A decline in the inter-wire resistance of the sensor after 30 min of incubation with bacteria was detected. Resistance change normalization and the subsequent analysis of the sensor's dose-response curve between 0 to 109 CFU/mL bacteria revealed the limits of detection and quantification of 2.1 × 105 CFU/mL and 7.3 × 105 CFU/mL, respectively. The dynamic range of the sensor was 104 to 107 CFU/mL where the bacteria counts were statistically distinguishable from each other. A linear fit in this range resulted in a sensitivity of 7.35 μS per CFU/mL. Experiments using competing Sarcina or Listeria cells showed specificity of the sensor towards the imprinted E. coli cells. The reported CIP-MW-based conductometric microfluidic sensor can provide a cost-effective, durable, portable, and real-time solution for the detection of pathogens in water.
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Affiliation(s)
- Shiva Akhtarian
- Department of Mechanical Engineering, York University, Toronto, ON M3J 1P3, Canada; (S.A.); (A.D.)
| | - Ali Doostmohammadi
- Department of Mechanical Engineering, York University, Toronto, ON M3J 1P3, Canada; (S.A.); (A.D.)
| | - Daphne-Eleni Archonta
- Department of Mechanical Engineering, York University, Toronto, ON M3J 1P3, Canada; (S.A.); (A.D.)
| | - Garrett Kraft
- Sixth Wave Innovations Inc., Halifax, NS B4A 0H3, Canada
| | - Satinder Kaur Brar
- Department of Civil Engineering, York University, Toronto, ON M3J 1P3, Canada;
| | - Pouya Rezai
- Department of Mechanical Engineering, York University, Toronto, ON M3J 1P3, Canada; (S.A.); (A.D.)
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Inglis TJJ. MARGINAL NOTES, August, 2023. Something in the air. J Med Microbiol 2023; 72. [PMID: 37675841 DOI: 10.1099/jmm.0.001752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/08/2023] Open
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7
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Wu H, Fang Y, Tian L, Liu X, Zhou X, Chen X, Gao H, Qin H, Liu Y. AIE Nanozyme-Based Long Persistent Chemiluminescence and Fluorescence for POCT of Pathogenic Bacteria. ACS Sens 2023; 8:3205-3214. [PMID: 37552936 DOI: 10.1021/acssensors.3c00918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
Pathogenic bacteria are widely distributed in diverse environments and significantly threaten human health. Point-of-care testing (POCT) is a valuable way for early warnings of bacteria threat. Herein, a chemiluminescence (CL)-based ratiometric sensing platform was constructed for sensitive POCT of bacteria according to a newly designed aggregation-induced emission (AIE) molecule. The new AIE molecule presents oxidase-like properties (named as AIEzyme) and can trigger long persistent CL of luminol (LUM) with strong intensity in the absence of H2O2. The CL emission can be monitored with the naked eye for over 2 h. The emission mechanism is explored and may be attributed to the persistent reactive oxygen species generation of the AIEzyme according to the cyclic energy transfer between the AIEzyme and luminol, which catalyzes CL of luminol. Based on the CL resonance energy transfer mechanism, an afterglow luminescence system is further developed, which is used to construct a ratiometric biosensor for detection of pathogenic bacteria. With a homemade holder as a detection room and a smartphone as an analyzer, the portable biosensing platform is used for quantitative POCT of bacteria in real samples with good recovery. The detection is free of H2O2 and an external excitation source, which not only simplifies the operation but reduces interference. Specifically, the long persistent luminescence and the ratiometric strategy can significantly improve accuracy, providing an instructive way for point-of-need analysis, for example, SARS-CoV-2 detection and bioimaging analysis.
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Affiliation(s)
- Haotian Wu
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yuan Fang
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Li Tian
- China Resources Biopharmaceutical Co., Ltd., Beijing 100120, China
| | - Xin Liu
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Xiao Zhou
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Xiying Chen
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Heqi Gao
- Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen University, Shenzhen 518060, China
| | - Haijuan Qin
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yaqing Liu
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
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Dai T, Xiao Z, Shan D, Moreno A, Li H, Prakash M, Banaei N, Rao J. Culture-Independent Multiplexed Detection of Drug-Resistant Bacteria Using Surface-Enhanced Raman Scattering. ACS Sens 2023; 8:3264-3271. [PMID: 37506677 DOI: 10.1021/acssensors.3c01345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2023]
Abstract
The rapid and accurate detection of bacteria resistance to β-lactam antibiotics is critical to inform optimal treatment and prevent overprescription of potent antibiotics. Here, we present a fast, culture-independent method for the detection of extended-spectrum β-lactamases (ESBLs) using surface-enhanced Raman scattering (SERS). The method uses Raman probes that release sulfur-based Raman active molecules in the presence of β-lactamases. The released thiol molecules can be captured by gold nanoparticles, leading to amplified Raman signals. A broad-spectrum cephalosporin probe R1G and an ESBL-specific probe R3G are designed to enable duplex detection of bacteria expressing broad-spectrum β-lactamases or ESBLs with a detection limit of 103 cfu/mL in 1 h incubation. Combined with a portable Raman microscope, our culturing-free SERS assay has reduced screening time to 1.5 h without compromising sensitivity and specificity.
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Affiliation(s)
- Tingting Dai
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Zhen Xiao
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, California 94305, United States
| | - Dingying Shan
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, California 94305, United States
| | - Angel Moreno
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, United States
| | - Hongquan Li
- Department of Electrical Engineering, Stanford University, Stanford, California 94305, United States
| | - Manu Prakash
- Department of Bioengineering, Stanford University, Stanford, California 94305, United States
| | - Niaz Banaei
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, United States
- Clinical Microbiology Laboratory, Stanford University Medical Center, Palo Alto, California 94304, United States
- Division of Infectious Diseases and Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, California 94305, United States
| | - Jianghong Rao
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, California 94305, United States
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Deb A, Gogoi M, Mandal TK, Sinha S, Pattader PSG. Specific Instantaneous Detection of Klebsiella pneumoniae for UTI Diagnosis with a Plasmonic Gold Nanoparticle Conjugated Aptasensor. ACS Appl Bio Mater 2023; 6:3309-3318. [PMID: 37437266 DOI: 10.1021/acsabm.3c00369] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Urinary tract infection (UTI), which can be caused by various pathogens, if not detected at an early stage can be fatal. It is essential to identify the specific pathogen responsible for UTI for appropriate treatment. This study describes a generic approach to the fabrication of a prototype for the noninvasive detection of a specific pathogen using a tailor-made plasmonic aptamer-gold nanoparticle (AuNP) assay. The assay is advantageous because the adsorbed specific aptamers passivate the nanoparticle surfaces and reduce and/or eliminate false-positive responses to nontarget analytes. Based on the localized surface plasmon resonance (LSPR) phenomena of AuNP, a point-of-care aptasensor was designed that shows specific changes in the absorbance in the visible spectra in the presence of a target pathogen for robust and fast screening of UTI samples. In this study, we demonstrate the specific detection of Klebsiella pneumoniae bacteria with LoD as low as 3.4 × 103 CFU/mL.
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Affiliation(s)
- Aniruddha Deb
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Mousumi Gogoi
- Altanostics Lab Private Limited, IIT Research Park, IIT Guwahati, Guwahati, Assam 781039, India
| | - Tapas K Mandal
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
- Jyoti and Bhupat Mehta School of Health Science & Technology, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Swapnil Sinha
- Altanostics Lab Private Limited, IIT Research Park, IIT Guwahati, Guwahati, Assam 781039, India
| | - Partho Sarathi Gooh Pattader
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
- Jyoti and Bhupat Mehta School of Health Science & Technology, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
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10
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Gigli L, Braidotti N, Lima MADRBF, Ciubotaru CD, Cojoc D. Label-Free Analysis of Urine Samples with In-Flow Digital Holographic Microscopy. Biosensors (Basel) 2023; 13:789. [PMID: 37622874 PMCID: PMC10452265 DOI: 10.3390/bios13080789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/29/2023] [Accepted: 07/30/2023] [Indexed: 08/26/2023]
Abstract
Urinary tract infections are among the most frequent infectious diseases and require screening a great amount of urine samples from patients. However, a high percentage of samples result as negative after urine culture plate tests (CPTs), demanding a simple and fast preliminary technique to screen out the negative samples. We propose a digital holographic microscopy (DHM) method to inspect fresh urine samples flowing in a glass capillary for 3 min, recording holograms at 2 frames per second. After digital reconstruction, bacteria, white and red blood cells, epithelial cells and crystals were identified and counted, and the samples were classified as negative or positive according to clinical cutoff values. Taking the CPT as reference, we processed 180 urine samples and compared the results with those of urine flow cytometry (UFC). Using standard evaluation metrics for our screening test, we found a similar performance for DHM and UFC, indicating DHM as a suitable and fast screening technique retaining several advantages. As a benefit of DHM, the technique is label-free and does not require sample preparation. Moreover, the phase and amplitude images of the cells and other particles present in urine are digitally recorded and can serve for further investigation afterwards.
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Affiliation(s)
- Lucia Gigli
- Alifax s.r.l. Via Merano, 30, Nimis, 33045 Udine, Italy;
| | - Nicoletta Braidotti
- Consiglio Nazionale Delle Ricerche (CNR), Istituto Officina dei Materiali (IOM), Area Science Park-Basovizza, Strada Statale 14, Km 163,5, 34149 Trieste, Italy; (N.B.); (M.A.d.R.B.F.L.); (C.D.C.)
- Department of Physics, University of Trieste, Via A. Valerio 2, 34127 Trieste, Italy
| | - Maria Augusta do R. B. F. Lima
- Consiglio Nazionale Delle Ricerche (CNR), Istituto Officina dei Materiali (IOM), Area Science Park-Basovizza, Strada Statale 14, Km 163,5, 34149 Trieste, Italy; (N.B.); (M.A.d.R.B.F.L.); (C.D.C.)
- Department of Physics, University of Trieste, Via A. Valerio 2, 34127 Trieste, Italy
| | - Catalin Dacian Ciubotaru
- Consiglio Nazionale Delle Ricerche (CNR), Istituto Officina dei Materiali (IOM), Area Science Park-Basovizza, Strada Statale 14, Km 163,5, 34149 Trieste, Italy; (N.B.); (M.A.d.R.B.F.L.); (C.D.C.)
| | - Dan Cojoc
- Consiglio Nazionale Delle Ricerche (CNR), Istituto Officina dei Materiali (IOM), Area Science Park-Basovizza, Strada Statale 14, Km 163,5, 34149 Trieste, Italy; (N.B.); (M.A.d.R.B.F.L.); (C.D.C.)
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Imani SM, Osman E, Bakhshandeh F, Qian S, Sakib S, MacDonald M, Gaskin M, Zhitomirsky I, Yamamura D, Li Y, Didar TF, Soleymani L. Liquid NanoBiosensors Enable One-Pot Electrochemical Detection of Bacteria in Complex Matrices. Adv Sci (Weinh) 2023:e2207223. [PMID: 37088731 DOI: 10.1002/advs.202207223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 03/29/2023] [Indexed: 05/03/2023]
Abstract
There is a need for point-of-care bacterial sensing and identification technologies that are rapid and simple to operate. Technologies that do not rely on growth cultures, nucleic acid amplification, step-wise reagent addition, and complex sample processing are the key for meeting this need. Herein, multiple materials technologies are integrated for overcoming the obstacles in creating rapid and one-pot bacterial sensing platforms. Liquid-infused nanoelectrodes are developed for reducing nonspecific binding on the transducer surface; bacterium-specific RNA-cleaving DNAzymes are used for bacterial identification; and redox DNA barcodes embedded into DNAzymes are used for binding-induced electrochemical signal transduction. The resultant single-step and one-pot assay demonstrates a limit-of-detection of 102 CFU mL-1 , with high specificity in identifying Escherichia coli amongst other Gram positive and negative bacteria including Klebsiella pneumoniae, Staphylococcus aureus, and Bacillus subtilis. Additionally, this assay is evaluated for analyzing 31 clinically obtained urine samples, demonstrating a clinical sensitivity of 100% and specify of 100%. When challenging this assay with nine clinical blood cultures, E. coli-positive and E. coli-negative samples can be distinguished with a probability of p < 0.001.
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Affiliation(s)
- Sara M Imani
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L7, Canada
| | - Enas Osman
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L7, Canada
| | - Fatemeh Bakhshandeh
- Department of Engineering Physics, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L7, Canada
| | - Shuwen Qian
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada
| | - Sadman Sakib
- Department of Engineering Physics, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L7, Canada
| | - Michael MacDonald
- Department of Materials Science and Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada
- Institute of Infectious Disease Research, McMaster University, Hamilton, ON, L8N 3Z5, Canada
| | - Mark Gaskin
- Hamilton Regional Laboratory Medicine Program, Hamilton General Hospital, 237 Barton St. East, Hamilton, Ontario, L8L 2×2, Canada
| | - Igor Zhitomirsky
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L7, Canada
- Department of Materials Science and Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada
| | - Deborah Yamamura
- Department of Pathology and Molecular Medicine, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4K1, Canada
- Institute of Infectious Disease Research, McMaster University, Hamilton, ON, L8N 3Z5, Canada
| | - Yingfu Li
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L7, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada
- Institute of Infectious Disease Research, McMaster University, Hamilton, ON, L8N 3Z5, Canada
| | - Tohid F Didar
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L7, Canada
- Department of Mechanical Engineering, McMaster University, Hamilton, ON, L8S 4L7, Canada
- Institute of Infectious Disease Research, McMaster University, Hamilton, ON, L8N 3Z5, Canada
| | - Leyla Soleymani
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L7, Canada
- Department of Engineering Physics, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L7, Canada
- Institute of Infectious Disease Research, McMaster University, Hamilton, ON, L8N 3Z5, Canada
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12
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Sahin F, Camdal A, Demirel Sahin G, Ceylan A, Ruzi M, Onses MS. Disintegration and Machine-Learning-Assisted Identification of Bacteria on Antimicrobial and Plasmonic Ag-Cu xO Nanostructures. ACS Appl Mater Interfaces 2023; 15:11563-11574. [PMID: 36890693 PMCID: PMC9999350 DOI: 10.1021/acsami.2c22003] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Bacteria cause many common infections and are the culprit of many outbreaks throughout history that have led to the loss of millions of lives. Contamination of inanimate surfaces in clinics, the food chain, and the environment poses a significant threat to humanity, with the increase in antimicrobial resistance exacerbating the issue. Two key strategies to address this issue are antibacterial coatings and effective detection of bacterial contamination. In this study, we present the formation of antimicrobial and plasmonic surfaces based on Ag-CuxO nanostructures using green synthesis methods and low-cost paper substrates. The fabricated nanostructured surfaces exhibit excellent bactericidal efficiency and high surface-enhanced Raman scattering (SERS) activity. The CuxO ensures outstanding and rapid antibacterial activity within 30 min, with a rate of >99.99% against typical Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus bacteria. The plasmonic Ag nanoparticles facilitate the electromagnetic enhancement of Raman scattering and enables rapid, label-free, and sensitive identification of bacteria at a concentration as low as 103 cfu/mL. The detection of different strains at this low concentration is attributed to the leaching of the intracellular components of the bacteria caused by the nanostructures. Additionally, SERS is coupled with machine learning algorithms for the automated identification of bacteria with an accuracy that exceeds 96%. The proposed strategy achieves effective prevention of bacterial contamination and accurate identification of the bacteria on the same material platform by using sustainable and low-cost materials.
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Affiliation(s)
- Furkan Sahin
- ERNAM—Erciyes
University Nanotechnology Application and Research Center, Kayseri 38039, Turkey
| | - Ali Camdal
- Department
of Electronic Engineering, Trinity College
Dublin, Dublin 2 College Green, Dublin 2, Ireland
| | - Gamze Demirel Sahin
- Department
of Biomedical Engineering, Yildiz Technical
University, Istanbul 34220, Turkey
| | - Ahmet Ceylan
- Faculty
of Pharmacy, Erciyes University, Kayseri 38039, Turkey
| | - Mahmut Ruzi
- ERNAM—Erciyes
University Nanotechnology Application and Research Center, Kayseri 38039, Turkey
| | - Mustafa Serdar Onses
- ERNAM—Erciyes
University Nanotechnology Application and Research Center, Kayseri 38039, Turkey
- Department
of Materials Science and Engineering, Erciyes
University, Kayseri 38039, Turkey
- UNAM—Institute
of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
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13
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Wasiewska LA, Juska VB, Seymour I, Burgess CM, Duffy G, O'Riordan A. Electrochemical nucleic acid-based sensors for detection of Escherichia coli and Shiga toxin-producing E. coli-Review of the recent developments. Compr Rev Food Sci Food Saf 2023; 22:1839-1863. [PMID: 36871164 DOI: 10.1111/1541-4337.13132] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 02/10/2023] [Accepted: 02/13/2023] [Indexed: 03/06/2023]
Abstract
Escherichia coli are a group of bacteria that are a natural part of the intestinal flora of warm-blooded animals, including humans. Most E. coli are nonpathogenic and essential for the normal function of a healthy intestine. However, certain types, such as Shiga toxin-producing E. coli (STEC), which is a foodborne pathogen, can cause a life-threatening illness. The development of point-of-care devices for the rapid detection of E. coli is of significant interest with regard to ensuring food safety. The most suitable way to distinguish between generic E. coli and STEC is by using nucleic acid-based detection, focusing on the virulence factors. Electrochemical sensors based on nucleic acid recognition have attracted much attention in recent years for use in pathogenic bacteria detection. This review has summarized nucleic acid-based sensors for the detection of generic E. coli and STEC since 2015. First, the sequences of the genes used as recognition probes are discussed and compared to the most recent research regarding the specific detection of general E. coli and STEC. Subsequently, the collected literature regarding nucleic acid-based sensors is described and discussed. The traditional sensors were divided into four categories such as gold, indium tin oxide, carbon-based electrodes, and those using magnetic particles. Finally, we summarized the future trends in nucleic acid-based sensor development for E. coli and STEC including some examples of fully integrated devices.
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Affiliation(s)
- Luiza A Wasiewska
- Nanotechnology Group, Tyndall National Institute, University College Cork, Cork, Ireland.,Food Safety Department, Teagasc Food Research Centre, Dublin, Ireland
| | - Vuslat B Juska
- Nanotechnology Group, Tyndall National Institute, University College Cork, Cork, Ireland
| | - Ian Seymour
- Nanotechnology Group, Tyndall National Institute, University College Cork, Cork, Ireland
| | | | - Geraldine Duffy
- Food Safety Department, Teagasc Food Research Centre, Dublin, Ireland
| | - Alan O'Riordan
- Nanotechnology Group, Tyndall National Institute, University College Cork, Cork, Ireland
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14
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Wang P, Sun H, Yang W, Fang Y. Optical Methods for Label-Free Detection of Bacteria. Biosensors (Basel) 2022; 12:bios12121171. [PMID: 36551138 PMCID: PMC9775963 DOI: 10.3390/bios12121171] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 12/06/2022] [Accepted: 12/13/2022] [Indexed: 05/27/2023]
Abstract
Pathogenic bacteria are the leading causes of food-borne and water-borne infections, and one of the most serious public threats. Traditional bacterial detection techniques, including plate culture, polymerase chain reaction, and enzyme-linked immunosorbent assay are time-consuming, while hindering precise therapy initiation. Thus, rapid detection of bacteria is of vital clinical importance in reducing the misuse of antibiotics. Among the most recently developed methods, the label-free optical approach is one of the most promising methods that is able to address this challenge due to its rapidity, simplicity, and relatively low-cost. This paper reviews optical methods such as surface-enhanced Raman scattering spectroscopy, surface plasmon resonance, and dark-field microscopic imaging techniques for the rapid detection of pathogenic bacteria in a label-free manner. The advantages and disadvantages of these label-free technologies for bacterial detection are summarized in order to promote their application for rapid bacterial detection in source-limited environments and for drug resistance assessments.
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Affiliation(s)
- Pengcheng Wang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou 221004, China
| | - Hao Sun
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Wei Yang
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Yimin Fang
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
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15
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Alhusaini Q, Scheld WS, Jia Z, Das D, Afzal F, Müller M, Schönherr H. Bare Eye Detection of Bacterial Enzymes of Pseudomonas aeruginosa with Polymer Modified Nanoporous Silicon Rugate Filters. Biosensors (Basel) 2022; 12:1064. [PMID: 36551031 PMCID: PMC9776340 DOI: 10.3390/bios12121064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 11/15/2022] [Accepted: 11/18/2022] [Indexed: 06/17/2023]
Abstract
The fabrication, characterization and application of a nanoporous Silicon Rugate Filter (pSiRF) loaded with an enzymatically degradable polymer is reported as a bare eye detection optical sensor for enzymes of pathogenic bacteria, which is devoid of any dyes. The nanopores of pSiRF were filled with poly(lactic acid) (PLA), which, upon enzymatic degradation, resulted in a change in the effective refractive index of the pSiRF film, leading to a readily discernible color change of the sensor. The shifts in the characteristic fringe patterns before and after the enzymatic reaction were analyzed quantitatively by Reflectometric Interference Spectroscopy (RIfS) to estimate the apparent kinetics and its dependence on enzyme concentration. A clear color change from green to blue was observed by the bare eye after PLA degradation by proteinase K. Moreover, the color change was further confirmed in measurements in bacterial suspensions of the pathogen Pseudomonas aeruginosa (PAO1) as well as in situ in the corresponding bacterial supernatants. This study highlights the potential of the approach in point of care bacteria detection.
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Affiliation(s)
- Qasim Alhusaini
- Physical Chemistry I and Research Center of Micro and Nanochemistry and (Bio)Technology (Cμ), Department of Chemistry and Biology, School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, 57076 Siegen, Germany
| | - Walter Sebastian Scheld
- Physical Chemistry I and Research Center of Micro and Nanochemistry and (Bio)Technology (Cμ), Department of Chemistry and Biology, School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, 57076 Siegen, Germany
| | - Zhiyuan Jia
- Physical Chemistry I and Research Center of Micro and Nanochemistry and (Bio)Technology (Cμ), Department of Chemistry and Biology, School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, 57076 Siegen, Germany
| | - Dipankar Das
- Physical Chemistry I and Research Center of Micro and Nanochemistry and (Bio)Technology (Cμ), Department of Chemistry and Biology, School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, 57076 Siegen, Germany
- Department of Chemistry, SRM Institute of Science and Technology, SRM Nagar, Potheri, Kattankulathur 603203, India
| | - Faria Afzal
- Physical Chemistry I and Research Center of Micro and Nanochemistry and (Bio)Technology (Cμ), Department of Chemistry and Biology, School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, 57076 Siegen, Germany
| | - Mareike Müller
- Physical Chemistry I and Research Center of Micro and Nanochemistry and (Bio)Technology (Cμ), Department of Chemistry and Biology, School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, 57076 Siegen, Germany
| | - Holger Schönherr
- Physical Chemistry I and Research Center of Micro and Nanochemistry and (Bio)Technology (Cμ), Department of Chemistry and Biology, School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, 57076 Siegen, Germany
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16
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Zhang F, Mo M, Jiang J, Zhou X, McBride M, Yang Y, Reilly KS, Grys TE, Haydel SE, Tao N, Wang S. Rapid Detection of Urinary Tract Infection in 10 min by Tracking Multiple Phenotypic Features in a 30 s Large-Volume Scattering Video of Urine Microscopy. ACS Sens 2022; 7:2262-2272. [PMID: 35930733 PMCID: PMC9465977 DOI: 10.1021/acssensors.2c00788] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Rapid point-of-care (POC) diagnosis of bacterial infection diseases provides clinical benefits of prompt initiation of antimicrobial therapy and reduction of the overuse/misuse of unnecessary antibiotics for nonbacterial infections. We present here a POC compatible method for rapid bacterial infection detection in 10 min. We use a large-volume solution scattering imaging (LVSi) system with low magnifications (1-2×) to visualize bacteria in clinical samples, thus eliminating the need for culture-based isolation and enrichment. We tracked multiple intrinsic phenotypic features of individual cells in a short video. By clustering these features with a simple machine learning algorithm, we can differentiate Escherichia coli from similar-sized polystyrene beads, distinguish bacteria with different shapes, and distinguish E. coli from urine particles. We applied the method to detect urinary tract infections in 104 patient urine samples with a 30 s LVSi video, and the results showed 92.3% accuracy compared with the clinical culture results. This technology provides opportunities for rapid bacterial infection diagnosis at POC settings.
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Affiliation(s)
- Fenni Zhang
- Biodesign Center for Bioelectronics and Biosensors, Arizona State University, Tempe, AZ 85287, USA
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Education Ministry, Department of Biomedical Engineering, Zhejiang University, Hangzhou, 310027, PR China
| | - Manni Mo
- Biodesign Center for Bioelectronics and Biosensors, Arizona State University, Tempe, AZ 85287, USA
| | - Jiapei Jiang
- Biodesign Center for Bioelectronics and Biosensors, Arizona State University, Tempe, AZ 85287, USA
- School of Biological and Health Systems Engineering, Tempe, Arizona 85287, USA
| | - Xinyu Zhou
- Biodesign Center for Bioelectronics and Biosensors, Arizona State University, Tempe, AZ 85287, USA
- School of Biological and Health Systems Engineering, Tempe, Arizona 85287, USA
| | - Michelle McBride
- Biodesign Center for Bioelectronics and Biosensors, Arizona State University, Tempe, AZ 85287, USA
| | - Yunze Yang
- Biodesign Center for Bioelectronics and Biosensors, Arizona State University, Tempe, AZ 85287, USA
| | - Kenta S. Reilly
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Phoenix, AZ 85054, USA
| | - Thomas E. Grys
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Phoenix, AZ 85054, USA
| | - Shelley E. Haydel
- Biodesign Center for Bioelectronics and Biosensors, Arizona State University, Tempe, AZ 85287, USA
- School of Life Sciences, Arizona State University, Tempe, Arizona 85287, USA
| | - Nongjian Tao
- Biodesign Center for Bioelectronics and Biosensors, Arizona State University, Tempe, AZ 85287, USA
| | - Shaopeng Wang
- Biodesign Center for Bioelectronics and Biosensors, Arizona State University, Tempe, AZ 85287, USA
- School of Biological and Health Systems Engineering, Tempe, Arizona 85287, USA
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17
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Maltseva ES, Nikolaeva VO, Savin AM, Dobryakov MY, Koshel EI, Krivoshapkin PV, Krivoshapkina EF. Fluorescent Hybrid Material Based on Natural Spider Silk and Carbon Dots for Bioapplication. ACS Biomater Sci Eng 2022; 8:3310-3319. [PMID: 35763797 DOI: 10.1021/acsbiomaterials.2c00322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Since the outcome of an operation largely depends on the quality of wound healing, it is one of the most challenging stages in surgery. Today, wound closure is mostly undertaken by means of a surgical suture. Good surgical sutures are biocompatible and biodegradable and possess excellent mechanical properties. Preferably, these sutures demonstrate optical activity for bacteria detection as there is a risk of surgical site infections. In this study, a solution, which fulfills all the requirements for manufacturing a multifunctional hybrid material, is proposed. In this work, a method for the in situ modification of spider silk with fluorescent carbon dots has been developed. The basic concept is the use of silk fibers as both the main framework for tissue regeneration and a carbon source during carbon dot synthesis. The resulting hybrid material exhibits strong photoluminescence in the red region of the spectrum (590 nm) when irradiated with blue light (480 nm). The proposed approach potentially allows for simultaneous wound closure and pathogen detection.
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Affiliation(s)
- Elizaveta S Maltseva
- Institute of Solution Chemistry of Advanced Materials and Technologies, ITMO University, Lomonosova Street 9, Saint Petersburg 191002, Russia
| | - Valeria O Nikolaeva
- Institute of Solution Chemistry of Advanced Materials and Technologies, ITMO University, Lomonosova Street 9, Saint Petersburg 191002, Russia
| | - Artemii M Savin
- Institute of Solution Chemistry of Advanced Materials and Technologies, ITMO University, Lomonosova Street 9, Saint Petersburg 191002, Russia
| | - Mikhail Y Dobryakov
- Institute of Solution Chemistry of Advanced Materials and Technologies, ITMO University, Lomonosova Street 9, Saint Petersburg 191002, Russia
| | - Elena I Koshel
- Institute of Solution Chemistry of Advanced Materials and Technologies, ITMO University, Lomonosova Street 9, Saint Petersburg 191002, Russia
| | - Pavel V Krivoshapkin
- Institute of Solution Chemistry of Advanced Materials and Technologies, ITMO University, Lomonosova Street 9, Saint Petersburg 191002, Russia
| | - Elena F Krivoshapkina
- Institute of Solution Chemistry of Advanced Materials and Technologies, ITMO University, Lomonosova Street 9, Saint Petersburg 191002, Russia
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18
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Abstract
Bacterial and viruses pathogens are a significant hazard to human safety and health. In the imaging and detection of pathogenic microorganisms, the application of fluorescent nanoparticles is very useful. Carbon dots and quantum dots are preferred in this regard as labels, amplifiers, and/or electrode modifiers because of their outstanding features. However, precise diagnostics to identify numerous harmful bacteria simultaneously still face considerable hurdles, yet it is an inevitable issue. With the growing development of biosensors, nanoproduct-based bio-sensing has recently become one of the most promising methods for accurately identifying and quantifying various pathogens at low cost, high sensitivity, and selectivity, with time savings. The most recent applications of carbon dots in optical and electrochemical-based sensors are discussed in this review, along with some examples of pathogen sensors.HighlightsSimultaneous and early detection of pathogens is a critical issue in the management of readily spread to prevent epidemics.Carbon dots-based biosensors are more preferred in detection of pathogens due to high selectivity and sensitivity, as well as quick and cheap point-of-care platform.Summary of recent advances in the design of optical and electrochemical biosensors for the detection of pathogens.
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Affiliation(s)
- Erhan Zor
- Department of Science Education, A. K. Education Faculty, Necmettin Erbakan University, Konya, Turkey
- Biomaterials and Biotechnology Laboratory, Science and Technology Research and Application Center (BITAM), Necmettin Erbakan University, Konya, Turkey
| | | | - Leyla Karadurmus
- Faculty of Pharmacy, Department of Analytical Chemistry, Ankara University, Ankara, Turkey
- Faculty of Pharmacy, Department of Analytical Chemistry, Adıyaman University, Adıyaman, Turkey
| | - Goksu Ozcelikay
- Faculty of Pharmacy, Department of Analytical Chemistry, Ankara University, Ankara, Turkey
| | - Sibel A Ozkan
- Faculty of Pharmacy, Department of Analytical Chemistry, Ankara University, Ankara, Turkey
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19
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Pandey R, Lu Y, Osman E, Saxena S, Zhang Z, Qian S, Pollinzi A, Smieja M, Li Y, Soleymani L, Hoare T. DNAzyme-Immobilizing Microgel Magnetic Beads Enable Rapid, Specific, Culture-Free, and Wash-Free Electrochemical Quantification of Bacteria in Untreated Urine. ACS Sens 2022; 7:985-994. [PMID: 35384648 DOI: 10.1021/acssensors.1c02440] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Rapid, ultrasensitive, and specific detection and identification of bacteria in unprocessed clinical specimens is critically needed to enable point-of-care diagnosis of infectious diseases. However, existing systems require sample processing and/or analyte enrichment for direct bacterial analysis in clinical samples, which significantly adds to the assay time and complexity. Herein, we integrate RNA-cleaving DNAzymes specific to Escherichia coli (E. coli) and programmed for electrochemical signal transduction, multifunctional microgel magnetic beads for immobilizing the DNAzyme into a hydrated and three-dimensional scaffold, and hierarchical electrodes for ultrasensitive electrochemical readout to achieve rapid bacterial analysis in undiluted and unprocessed urine collected from symptomatic patients suspected of having urinary tract infections (UTIs). The microgel magnetic bead assay enables highly efficient conjugation and hydration of the immobilized DNAzymes, resulting in low limits-of-detection of 6 CFU/mL in buffer and 138 CFU/mL in unprocessed urine with high specificity against multiple urinary pathogens within a 1 hour assay time. The assay successfully identifies which patients are infected with E. coli as the causative organism for their UTI symptoms, indicating the clinical relevance of this assay.
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Affiliation(s)
- Richa Pandey
- Department of Engineering Physics, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Yang Lu
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Enas Osman
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Survanshu Saxena
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Zijie Zhang
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Shuwen Qian
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Angela Pollinzi
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Marek Smieja
- Department of Medicine, Pathology and Molecular Medicine, Research St. Joseph’s Hamilton, McMaster University, Hamilton, Ontario L8S 4L8, Canada
| | - Yingfu Li
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Leyla Soleymani
- Department of Engineering Physics, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Todd Hoare
- Department of Engineering Physics, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
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20
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Péter B, Farkas E, Kurunczi S, Szittner Z, Bősze S, Ramsden JJ, Szekacs I, Horvath R. Review of Label-Free Monitoring of Bacteria: From Challenging Practical Applications to Basic Research Perspectives. Biosensors (Basel) 2022; 12:bios12040188. [PMID: 35448248 PMCID: PMC9026780 DOI: 10.3390/bios12040188] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/07/2022] [Accepted: 03/11/2022] [Indexed: 05/10/2023]
Abstract
Novel biosensors already provide a fast way to detect the adhesion of whole bacteria (or parts of them), biofilm formation, and the effect of antibiotics. Moreover, the detection sensitivities of recent sensor technologies are large enough to investigate molecular-scale biological processes. Usually, these measurements can be performed in real time without using labeling. Despite these excellent capabilities summarized in the present work, the application of novel, label-free sensor technologies in basic biological research is still rare; the literature is dominated by heuristic work, mostly monitoring the presence and amount of a given analyte. The aims of this review are (i) to give an overview of the present status of label-free biosensors in bacteria monitoring, and (ii) to summarize potential novel directions with biological relevancies to initiate future development. Optical, mechanical, and electrical sensing technologies are all discussed with their detailed capabilities in bacteria monitoring. In order to review potential future applications of the outlined techniques in bacteria research, we summarize the most important kinetic processes relevant to the adhesion and survival of bacterial cells. These processes are potential targets of kinetic investigations employing modern label-free technologies in order to reveal new fundamental aspects. Resistance to antibacterials and to other antimicrobial agents, the most important biological mechanisms in bacterial adhesion and strategies to control adhesion, as well as bacteria-mammalian host cell interactions are all discussed with key relevancies to the future development and applications of biosensors.
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Affiliation(s)
- Beatrix Péter
- Nanobiosensorics Laboratory, Centre for Energy Research, Institute of Technical Physics and Materials Science, 1121 Budapest, Hungary; (E.F.); (S.K.); (Z.S.); (I.S.)
- Correspondence: (B.P.); (R.H.)
| | - Eniko Farkas
- Nanobiosensorics Laboratory, Centre for Energy Research, Institute of Technical Physics and Materials Science, 1121 Budapest, Hungary; (E.F.); (S.K.); (Z.S.); (I.S.)
| | - Sandor Kurunczi
- Nanobiosensorics Laboratory, Centre for Energy Research, Institute of Technical Physics and Materials Science, 1121 Budapest, Hungary; (E.F.); (S.K.); (Z.S.); (I.S.)
| | - Zoltán Szittner
- Nanobiosensorics Laboratory, Centre for Energy Research, Institute of Technical Physics and Materials Science, 1121 Budapest, Hungary; (E.F.); (S.K.); (Z.S.); (I.S.)
| | - Szilvia Bősze
- MTA-ELTE Research Group of Peptide Chemistry, Eötvös Loránd Research Network (ELKH), Institute of Chemistry, Eötvös Loránd University, 1120 Budapest, Hungary;
- National Public Health Center, 1097 Budapest, Hungary
| | - Jeremy J. Ramsden
- Clore Laboratory, Department of Biomedical Research, University of Buckingham, Buckingham MK18 1AD, UK;
| | - Inna Szekacs
- Nanobiosensorics Laboratory, Centre for Energy Research, Institute of Technical Physics and Materials Science, 1121 Budapest, Hungary; (E.F.); (S.K.); (Z.S.); (I.S.)
| | - Robert Horvath
- Nanobiosensorics Laboratory, Centre for Energy Research, Institute of Technical Physics and Materials Science, 1121 Budapest, Hungary; (E.F.); (S.K.); (Z.S.); (I.S.)
- Correspondence: (B.P.); (R.H.)
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21
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Tessaro L, Aquino A, de Almeida Rodrigues P, Joshi N, Ferrari RG, Conte-Junior CA. Nucleic Acid-Based Nanobiosensor (NAB) Used for Salmonella Detection in Foods: A Systematic Review. Nanomaterials (Basel) 2022; 12:nano12050821. [PMID: 35269310 PMCID: PMC8912873 DOI: 10.3390/nano12050821] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 02/22/2022] [Accepted: 02/24/2022] [Indexed: 12/14/2022]
Abstract
Salmonella bacteria is a foodborne pathogen found mainly in food products causing severe symptoms in the individual, such as diarrhea, fever, and abdominal cramps after consuming the infected food, which can be fatal in some severe cases. Rapid and selective methods to detect Salmonella bacteria can prevent outbreaks when ingesting contaminated food. Nanobiosensors are a highly sensitive, simple, faster, and lower cost method for the rapid detection of Salmonella, an alternative to conventional enzyme-linked immunosorbent assay (ELISA) and polymerase chain reaction (PCR) techniques. This study systematically searched and analyzed literature data related to nucleic acid-based nanobiosensors (NABs) with nanomaterials to detect Salmonella in food, retrieved from three databases, published between 2010 and 2021. We extracted data and critically analyzed the effect of nanomaterial functionalized with aptamer or DNA at the limit of detection (LOD). Among the nanomaterials, gold nanoparticles (AuNPs) were the most used nanomaterial in studies due to their unique optical properties of the metal, followed by magnetic nanoparticles (MNPs) of Fe3O4, copper nanoparticles (CuNPs), and also hybrid nanomaterials multiwalled carbon nanotubes (c-MWCNT/AuNP), QD/UCNP-MB (quantum dotes upconverting nanoparticle of magnetic beads), and cadmium telluride quantum dots (CdTe QDs@MNPs) showed excellent LOD values. The transducers used for detection also varied from electrochemical, fluorescent, surface-enhanced Raman spectroscopy (SERS), RAMAN spectroscopy, and mainly colorimetric due to the possibility of visualizing the detection result with the naked eye. Furthermore, we show the magnetic separation system capable of detecting the target amplification of the genetic material. Finally, we present perspectives, future research, and opportunities to use point-of-care (POC) diagnostic devices as a faster and lower cost approach for detecting Salmonella in food as they prove to be viable for resource-constrained environments such as field-based or economically limited conditions.
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Affiliation(s)
- Leticia Tessaro
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro 21941-909, RJ, Brazil; (L.T.); (A.A.); (P.d.A.R.); (N.J.); (R.G.F.)
- Laboratory of Advanced Analysis in Biochemistry and Molecular Biology (LAABBM), Department of Biochemistry, Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro 21941-598, RJ, Brazil
- Nanotechnology Network, Carlos Chagas Filho Research Support Foundation of the State of Rio de Janeiro (FAPERJ), Rio de Janeiro 20020-000, RJ, Brazil
- Post-Graduation Program of Chemistry (PGQu), Institute of Chemistry (IQ), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro 21941-909, RJ, Brazil
| | - Adriano Aquino
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro 21941-909, RJ, Brazil; (L.T.); (A.A.); (P.d.A.R.); (N.J.); (R.G.F.)
- Laboratory of Advanced Analysis in Biochemistry and Molecular Biology (LAABBM), Department of Biochemistry, Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro 21941-598, RJ, Brazil
- Nanotechnology Network, Carlos Chagas Filho Research Support Foundation of the State of Rio de Janeiro (FAPERJ), Rio de Janeiro 20020-000, RJ, Brazil
- Post-Graduation Program of Chemistry (PGQu), Institute of Chemistry (IQ), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro 21941-909, RJ, Brazil
| | - Paloma de Almeida Rodrigues
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro 21941-909, RJ, Brazil; (L.T.); (A.A.); (P.d.A.R.); (N.J.); (R.G.F.)
- Laboratory of Advanced Analysis in Biochemistry and Molecular Biology (LAABBM), Department of Biochemistry, Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro 21941-598, RJ, Brazil
- Post-Graduation Program of Veterinary Hygiene (PPGHV), Faculty of Veterinary Medicine, Fluminense Federal University (UFF), Vital Brazil Filho, Niterói 24230-340, RJ, Brazil
| | - Nirav Joshi
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro 21941-909, RJ, Brazil; (L.T.); (A.A.); (P.d.A.R.); (N.J.); (R.G.F.)
- Laboratory of Advanced Analysis in Biochemistry and Molecular Biology (LAABBM), Department of Biochemistry, Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro 21941-598, RJ, Brazil
- Physics Department, Federal University of ABC, Campus Santo André, Santo André 09210-580, SP, Brazil
| | - Rafaela Gomes Ferrari
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro 21941-909, RJ, Brazil; (L.T.); (A.A.); (P.d.A.R.); (N.J.); (R.G.F.)
- Laboratory of Advanced Analysis in Biochemistry and Molecular Biology (LAABBM), Department of Biochemistry, Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro 21941-598, RJ, Brazil
| | - Carlos Adam Conte-Junior
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro 21941-909, RJ, Brazil; (L.T.); (A.A.); (P.d.A.R.); (N.J.); (R.G.F.)
- Laboratory of Advanced Analysis in Biochemistry and Molecular Biology (LAABBM), Department of Biochemistry, Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro 21941-598, RJ, Brazil
- Nanotechnology Network, Carlos Chagas Filho Research Support Foundation of the State of Rio de Janeiro (FAPERJ), Rio de Janeiro 20020-000, RJ, Brazil
- Post-Graduation Program of Chemistry (PGQu), Institute of Chemistry (IQ), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro 21941-909, RJ, Brazil
- Post-Graduation Program of Veterinary Hygiene (PPGHV), Faculty of Veterinary Medicine, Fluminense Federal University (UFF), Vital Brazil Filho, Niterói 24230-340, RJ, Brazil
- Correspondence:
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22
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Gopal A, Yan L, Kashif S, Munshi T, Roy VAL, Voelcker NH, Chen X. Biosensors and Point-of-Care Devices for Bacterial Detection: Rapid Diagnostics Informing Antibiotic Therapy. Adv Healthc Mater 2022; 11:e2101546. [PMID: 34850601 DOI: 10.1002/adhm.202101546] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 11/20/2021] [Indexed: 02/06/2023]
Abstract
With an exponential rise in antimicrobial resistance and stagnant antibiotic development pipeline, there is, more than ever, a crucial need to optimize current infection therapy approaches. One of the most important stages in this process requires rapid and effective identification of pathogenic bacteria responsible for diseases. Current gold standard techniques of bacterial detection include culture methods, polymerase chain reactions, and immunoassays. However, their use is fraught with downsides with high turnaround time and low accuracy being the most prominent. This imposes great limitations on their eventual application as point-of-care devices. Over time, innovative detection techniques have been proposed and developed to curb these drawbacks. In this review, a systematic summary of a range of biosensing platforms is provided with a strong focus on technologies conferring high detection sensitivity and specificity. A thorough analysis is performed and the benefits and drawbacks of each type of biosensor are highlighted, the factors influencing their potential as point-of-care devices are discussed, and the authors' insights for their translation from proof-of-concept systems into commercial medical devices are provided.
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Affiliation(s)
- Ashna Gopal
- School of Engineering Institute for Bioengineering The University of Edinburgh Edinburgh EH9 3JL UK
| | - Li Yan
- College of Health Science and Environmental Engineering Shenzhen Technology University Shenzhen 518118 China
| | - Saima Kashif
- School of Engineering Institute for Bioengineering The University of Edinburgh Edinburgh EH9 3JL UK
| | - Tasnim Munshi
- School of Chemistry University of Lincoln, Brayford Pool Lincoln Lincolnshire LN6 7TS UK
| | | | - Nicolas H. Voelcker
- Drug Delivery Disposition and Dynamics Monash Institute of Pharmaceutical Sciences Monash University Parkville Victoria VIC 3052 Australia
- Melbourne Centre for Nanofabrication Victorian Node of the Australian National Fabrication Facility Clayton Victoria 3168 Australia
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Clayton Victoria 3168 Australia
| | - Xianfeng Chen
- School of Engineering Institute for Bioengineering The University of Edinburgh Edinburgh EH9 3JL UK
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23
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Zong H, Yurdakul C, Bai Y, Zhang M, Ünlü MS, Cheng JX. Background-Suppressed High-Throughput Mid-Infrared Photothermal Microscopy via Pupil Engineering. ACS Photonics 2021; 8:3323-3336. [PMID: 35966035 PMCID: PMC9373987 DOI: 10.1021/acsphotonics.1c01197] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Mid-infrared photothermal (MIP) microscopy has been a promising label-free chemical imaging technique for functional characterization of specimens owing to its enhanced spatial resolution and high specificity. Recently developed wide-field MIP imaging modalities have drastically improved speed and enabled high-throughput imaging of micron-scale subjects. However, the weakly scattered signal from subwavelength particles becomes indistinguishable from the shot-noise as a consequence of the strong background light, leading to limited sensitivity. Here, we demonstrate background-suppressed chemical fingerprinting at a single nanoparticle level by selectively attenuating the reflected light through pupil engineering in the collection path. Our technique provides over 3 orders of magnitude background suppression by quasi-darkfield illumination in the epi-configuration without sacrificing lateral resolution. We demonstrate 6-fold signal-to-background noise ratio improvement, allowing for simultaneous detection and discrimination of hundreds of nanoparticles across a field of view of 70 μm × 70 μm. A comprehensive theoretical framework for photothermal image formation is provided and experimentally validated with 300 and 500 nm PMMA beads. The versatility and utility of our technique are demonstrated via hyperspectral dark-field MIP imaging of S. aureus and E. coli bacteria and MIP imaging of subcellular lipid droplets inside C. albicans and cancer cells.
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Affiliation(s)
- Haonan Zong
- Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Celalettin Yurdakul
- Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Yeran Bai
- Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Meng Zhang
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - M Selim Ünlü
- Department of Electrical and Computer Engineering and Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Ji-Xin Cheng
- Department of Electrical and Computer Engineering and Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
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24
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Seok Y, Lee J, Kim MG. Paper-Based Airborne Bacteria Collection and DNA Extraction Kit. Biosensors (Basel) 2021; 11:375. [PMID: 34677331 DOI: 10.3390/bios11100375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/01/2021] [Accepted: 10/04/2021] [Indexed: 12/24/2022]
Abstract
The critical risk from airborne infectious diseases, bio-weapons, and harmful bacteria is currently the highest it has ever been in human history. The requirement for monitoring airborne pathogens has gradually increased to defend against bioterrorism or prevent pandemics, especially via simple and low-cost platforms which can be applied in resource-limited settings. Here, we developed a paper-based airborne bacteria collection and DNA extraction kit suitable for simple application with minimal instruments. Airborne sample collection and DNA extraction for PCR analysis were integrated in the paper kit. We created an easy-to-use paper-based air monitoring system using 3D printing technology combined with an air pump. The operation time of the entire process, comprising air sampling, bacterial cell lysis, purification and concentration of DNA, and elution of the DNA analyte, was within 20 min. All the investigations and optimum settings were tested in a custom-designed closed cabinet system. In the fabricated cabinet system, the paper kit operated effectively at a temperature of 25–35 °C and 30–70% relative humidity for air containing 10–106 CFU Staphylococcus aureus. This paper kit could be applied for simple, rapid, and cost-effective airborne pathogen monitoring.
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25
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Ferrari AGM, Crapnell RD, Banks CE. Electroanalytical Overview: Electrochemical Sensing Platforms for Food and Drink Safety. Biosensors (Basel) 2021; 11:291. [PMID: 34436093 PMCID: PMC8392528 DOI: 10.3390/bios11080291] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/17/2021] [Accepted: 08/20/2021] [Indexed: 12/13/2022]
Abstract
Robust, reliable, and affordable analytical techniques are essential for screening and monitoring food and water safety from contaminants, pathogens, and allergens that might be harmful upon consumption. Recent advances in decentralised, miniaturised, and rapid tests for health and environmental monitoring can provide an alternative solution to the classic laboratory-based analytical techniques currently utilised. Electrochemical biosensors offer a promising option as portable sensing platforms to expedite the transition from laboratory benchtop to on-site analysis. A plethora of electroanalytical sensor platforms have been produced for the detection of small molecules, proteins, and microorganisms vital to ensuring food and drink safety. These utilise various recognition systems, from direct electrochemical redox processes to biological recognition elements such as antibodies, enzymes, and aptamers; however, further exploration needs to be carried out, with many systems requiring validation against standard benchtop laboratory-based techniques to offer increased confidence in the sensing platforms. This short review demonstrates that electroanalytical biosensors already offer a sensitive, fast, and low-cost sensor platform for food and drink safety monitoring. With continued research into the development of these sensors, increased confidence in the safety of food and drink products for manufacturers, policy makers, and end users will result.
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Affiliation(s)
| | | | - Craig E. Banks
- Faculty of Science and Engineering, Manchester Metropolitan University, Manchester M1 5GD, UK; (A.G.-M.F.); (R.D.C.)
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26
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Abstract
Identification of bacterial strains is critical for the theranostics of bacterial infections and the development of antibiotics. Many organic fluorescent probes have been developed to overcome the limitations of conventional detection methods. These probes can detect bacteria with "off-on" fluorescence change, which enables the real-time imaging and quantitative analysis of bacteria in vitro and in vivo. In this review, we outline recent advances in the development of fluorescence-based dyes capable of detecting bacteria. Detection strategies are described, including specific interactions with bacterial cell wall components, bacterial and intracellular enzyme reactions, and peptidoglycan synthesis reactions. These include theranostic probes that allow simultaneous bacterial detection and photodynamic antimicrobial effects. Some examples of other miscellaneous detections in bacteria have also been described. In addition, this review demonstrates the validation of these fluorescent probes using a variety of biological models such as gram-negative and -positive bacteria, antibiotic-resistant bacteria, infected cancer cells, tumor-bearing, and infected mice. Prospects for future research are outlined by presenting the importance of effective in vitro and in vivo detection of bacteria and development of antimicrobial agents.
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Affiliation(s)
| | | | | | | | - Min Hee Lee
- Department of Chemistry, Sookmyung Women’s University, Seoul, South Korea
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27
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Abstract
The miniSPIM is a miniaturized light-sheet microscope that enables imaging with optical sectioning on mobile camera devices such as smartphones and single-board computers. Applications of the miniSPIM include biosensing, field research, and education where maximum portability and robustness, low power consumption, and low cost are key. Here, it is shown how all of the components of a simple light-sheet microscope can be integrated within a footprint smaller than the average smartphone. Example applications include the quantification of the motion of microparticles and bacteria in fluids, the characterization of solvent polarity based on spectral shifts of the lipid probe Nile Red, and three-dimensional (3D) and time-lapse autofluorescence imaging of a live zebrafish embryo.
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Affiliation(s)
- Per Niklas Hedde
- Beckman Laser Institute, University of California Irvine, Irvine, California 92612, United States
- Department of Pharmaceutical Sciences, University of California Irvine, Irvine, California 92697, United States
- Laboratory for Fluorescence Dynamics, University of California Irvine, Irvine, California 92697, United States
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28
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Halkare P, Punjabi N, Wangchuk J, Madugula S, Kondabagil K, Mukherji S. Label-Free Detection of Escherichia coli from Mixed Bacterial Cultures Using Bacteriophage T4 on Plasmonic Fiber-Optic Sensor. ACS Sens 2021; 6:2720-2727. [PMID: 34253020 DOI: 10.1021/acssensors.1c00801] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Consumption of water contaminated with pathogenic bacteria is a major cause of water-borne diseases. To address this challenge, we have developed a novel and sensitive sensing scheme for the rapid detection of bacteria (Escherichia coli B40) on a fiber-optic platform using bacteriophage (T4) as a bio-recognition element. The novelty of our sensing scheme is that instead of bacteriophages, bacteria (analyte) were first captured on the sensing surface and then the sensing surface was subjected to bacteriophages for specific detection of bacteria. The sensor was subjected to 100 to 107 cfu/mL of E. coli B40 spiked in a lake water matrix, and the least concentration of bacteria that could be easily detected was found to be 1000 cfu/mL. The control studies were performed with nonhost bacteria Pseudomonas aeruginosa. Bacteriophage T4, being specific to its host E. coli B40, did not interact with P. aeruginosa captured on the sensing probe, giving a negligible nonspecific response. Due to the specificity of bacteriophages to its host bacteria, it is possible to use this scheme to carry out the detection of specific bacteria in a mixed sample (containing a combination of bacteria) using bacteriophages specific to it. The sensor was able to detect E. coli B40 (target bacteria) even in the presence of a very high concentration (1000 times higher) of P. aeruginosa (nontarget bacteria).
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Affiliation(s)
- Pallavi Halkare
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Nirmal Punjabi
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Jigme Wangchuk
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Santhosh Madugula
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Kiran Kondabagil
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Soumyo Mukherji
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
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29
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Chawich J, Hassen WM, Elie-Caille C, Leblois T, Dubowski JJ. Regenerable ZnO/GaAs Bulk Acoustic Wave Biosensor for Detection of Escherichia coli in "Complex" Biological Medium. Biosensors (Basel) 2021; 11:145. [PMID: 34067116 DOI: 10.3390/bios11050145] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 04/30/2021] [Accepted: 05/05/2021] [Indexed: 12/21/2022]
Abstract
A regenerable bulk acoustic wave (BAW) biosensor is developed for the rapid, label-free and selective detection of Escherichia coli in liquid media. The geometry of the biosensor consists of a GaAs membrane coated with a thin film of piezoelectric ZnO on its top surface. A pair of electrodes deposited on the ZnO film allows the generation of BAWs by lateral field excitation. The back surface of the membrane is functionalized with alkanethiol self-assembled monolayers and antibodies against E. coli. The antibody immobilization was investigated as a function of the concentration of antibody suspensions, their pH and incubation time, designed to optimize the immunocapture of bacteria. The performance of the biosensor was evaluated by detection tests in different environments for bacterial suspensions ranging between 103 and 108 CFU/mL. A linear dependence between the frequency response and the logarithm of E. coli concentration was observed for suspensions ranging between 103 and 107 CFU/mL, with the limit of detection of the biosensor estimated at 103 CFU/mL. The 5-fold regeneration and excellent selectivity towards E. coli detected at 104 CFU/mL in a suspension tinted with Bacillus subtilis at 106 CFU/mL illustrate the biosensor potential for the attractive operation in complex biological media.
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Yu T, Xianyu Y. Array-Based Biosensors for Bacteria Detection: From the Perspective of Recognition. Small 2021; 17:e2006230. [PMID: 33870615 DOI: 10.1002/smll.202006230] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 12/18/2020] [Indexed: 05/24/2023]
Abstract
Array-based biosensors have shown as effective and powerful tools to distinguish intricate mixtures with infinitesimal differences among analytes such as nucleic acids, proteins, microorganisms, and other biomolecules. In array-based bacterial sensing, the recognition of bacteria is the initial step that can crucially influence the analytical performance of a biosensor array. Bacteria recognition as well as the signal readout and mathematical analysis are indispensable to ensure the discrimination ability of array-based biosensors. Strategies for bacteria recognition mainly include the specific interaction between biomolecules and the corresponding receptors on bacteria, the noncovalent interaction between materials and bacteria, and the specific targeting of bacterial metabolites. In this review, recent advances in array-based bacteria sensors are discussed from the perspective of bacteria recognition relying on the characteristics of different bacteria. Principles of bacteria recognition and signal readout for bacteria detection are highlighted as well as the discussion on future trends in array-based biosensors.
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Affiliation(s)
- Ting Yu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Yunlei Xianyu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
- Fuli Institute of Food Science, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Ningbo Research Institute, Zhejiang University, Ningbo, Zhejiang, 315100, China
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31
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Mikagi A, Tsurufusa R, Tsuchido Y, Hashimoto T, Hayashita T. Fast and Sensitive Bacteria Detection by Boronic Acid Modified Fluorescent Dendrimer. Sensors (Basel) 2021; 21:3115. [PMID: 33946193 DOI: 10.3390/s21093115] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 04/27/2021] [Accepted: 04/27/2021] [Indexed: 11/17/2022]
Abstract
This study reports a novel, fast, easy, and sensitive detection method for bacteria which is urgently needed to diagnose infections in their early stages. Our work presents a complex of poly(amidoamine) dendrimer modified by phenylboronic acid and labeled by a fluorescent dansyl group (Dan-B8.5-PAMAM). Our system detects bacteria in 20 min with a sensitivity of approximately 104 colony-forming units (CFU)·mL−1. Moreover, it does not require any peculiar technical skills or expensive materials. The driving force for bacteria recognition is the binding between terminal phenylboronic acids on the probe and bacteria’s surface glycolipids, rather than electrostatic interactions. The aggregation caused by such binding reduces fluorescence. Even though our recognition method does not distinguish between live or dead bacteria, it shows selective antibacterial activity towards Gram-negative bacteria. This study may potentially contribute a new method for the convenient detection and killing of bacteria.
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32
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Pfeffer C, Liang Y, Grothe H, Wolf B, Brederlow R. Towards Easy-to-Use Bacteria Sensing: Modeling and Simulation of a New Environmental Impedimetric Biosensor in Fluids. Sensors (Basel) 2021; 21:1487. [PMID: 33670022 PMCID: PMC7926956 DOI: 10.3390/s21041487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/17/2021] [Accepted: 02/19/2021] [Indexed: 11/20/2022]
Abstract
Conventional pathogenic bacteria-detection methods are lab-bound, time-consuming and need trained personnel. Microelectrodes can be used to recognize harmful microorganisms by dielectric impedance spectroscopy. However, crucial for this spectroscopy method are the spatial dimensions and layout of the electrodes, as the corresponding distribution of the electric field defines the sensor system parameters such as sensitivity, SNR, and dynamic range. Therefore, a variety of sensor models are created and evaluated. FEM simulations in 2D and 3D are conducted for this impedimetric sensor. The authors tested differently shaped structures, verified the linear influence of the excitation amplitude and developed a mathematical concept for a quality factor that practically allows us to distinguish arbitrary sensor designs and layouts. The effect of guard electrodes blocking outer influences on the electric field are investigated, and essential configurations are explored. The results lead to optimized electronic sensors in terms of geometrical dimensions. Possible material choices for real sensors as well as design and layout recommendations are presented.
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Affiliation(s)
- Christian Pfeffer
- Department of Electrical and Computer Engineering, Technical University of Munich, 80333 Munich, Germany; (Y.L.); (H.G.); (R.B.)
| | - Yue Liang
- Department of Electrical and Computer Engineering, Technical University of Munich, 80333 Munich, Germany; (Y.L.); (H.G.); (R.B.)
| | - Helmut Grothe
- Department of Electrical and Computer Engineering, Technical University of Munich, 80333 Munich, Germany; (Y.L.); (H.G.); (R.B.)
| | - Bernhard Wolf
- Steinbeistransferzentrum für Medizinische Elektronik und Lab-on-Chip Systeme, 80802 Munich, Germany;
| | - Ralf Brederlow
- Department of Electrical and Computer Engineering, Technical University of Munich, 80333 Munich, Germany; (Y.L.); (H.G.); (R.B.)
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33
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Chen A, Wang D, Nugen SR, Chen J. An Engineered Reporter Phage for the Fluorometric Detection of Escherichia coli in Ground Beef. Microorganisms 2021; 9:microorganisms9020436. [PMID: 33669833 PMCID: PMC7922204 DOI: 10.3390/microorganisms9020436] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 02/11/2021] [Accepted: 02/17/2021] [Indexed: 11/16/2022] Open
Abstract
Despite enhanced sanitation implementations, foodborne bacterial pathogens still remain a major threat to public health and generate high costs for the food industry. Reporter bacteriophage (phage) systems have been regarded as a powerful technology for diagnostic assays for their extraordinary specificity to target cells and cost-effectiveness. Our study introduced an enzyme-based fluorescent assay for detecting the presence of E. coli using the T7 phage engineered with the lacZ operon which encodes beta-galactosidase (β-gal). Both endogenous and overexpressed β-gal expression was monitored using a fluorescent-based method with 4-methylumbelliferyl β-d-galactopyranoside (MUG) as the substrate. The infection of E. coli with engineered phages resulted in a detection limit of 10 CFU/mL in ground beef juice after 7 h of incubation. In this study, we demonstrated that the overexpression of β-gal coupled with a fluorogenic substrate can provide a straightforward and sensitive approach to detect the potential biological contamination in food samples. The results also suggested that this system can be applied to detect E. coli strains isolated from environmental samples, indicating a broader range of bacterial detection.
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Affiliation(s)
- Anqi Chen
- Department of Food Science, Cornell University, Ithaca, NY 14853, USA; (A.C.); (D.W.); (J.C.)
| | - Danhui Wang
- Department of Food Science, Cornell University, Ithaca, NY 14853, USA; (A.C.); (D.W.); (J.C.)
- Department of Food Science and Technology, The Ohio State University, Columbus, OH 43210, USA
| | - Sam R. Nugen
- Department of Food Science, Cornell University, Ithaca, NY 14853, USA; (A.C.); (D.W.); (J.C.)
- Correspondence:
| | - Juhong Chen
- Department of Food Science, Cornell University, Ithaca, NY 14853, USA; (A.C.); (D.W.); (J.C.)
- Department of Biological Systems Engineering, Virginia Tech, Blacksburg, VA 24061, USA
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Kaur K, Chelangat W, Druzhinin SI, Karuri NW, Müller M, Schönherr H. Quantitative E. coli Enzyme Detection in Reporter Hydrogel-Coated Paper Using a Smartphone Camera. Biosensors (Basel) 2021; 11:25. [PMID: 33477907 PMCID: PMC7833396 DOI: 10.3390/bios11010025] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/08/2021] [Accepted: 01/14/2021] [Indexed: 02/06/2023]
Abstract
There is a growing demand for rapid and sensitive detection approaches for pathogenic bacteria that can be applied by non-specialists in non-laboratory field settings. Here, the detection of the typical E. coli enzyme β-glucuronidase using a chitosan-based sensing hydrogel-coated paper sensor and the detailed analysis of the reaction kinetics, as detected by a smartphone camera, is reported. The chromogenic reporter unit affords an intense blue color in a two-step reaction, which was analyzed using a modified Michaelis-Menten approach. This generalizable approach can be used to determine the limit of detection and comprises an invaluable tool to characterize the performance of lab-in-a-phone type approaches. For the particular system analyzed, the ratio of reaction rate and equilibrium constants of the enzyme-substrate complex are 0.3 and 0.9 pM-1h-1 for β-glucuronidase in phosphate buffered saline and lysogeny broth, respectively. The minimal degree of substrate conversion for detection of the indigo pigment formed during the reaction is 0.15, while the minimal time required for detection in this particular system is ~2 h at an enzyme concentration of 100 nM. Therefore, this approach is applicable for quantitative lab-in-a-phone based point of care detection systems that are based on enzymatic substrate conversion via bacterial enzymes.
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Affiliation(s)
- Kawaljit Kaur
- Physical Chemistry I & Research Center of Micro and Nanochemistry and Engineering (Cμ), Department of Chemistry and Biology, University of Siegen, Adolf-Reichwein-Straße 2, 57076 Siegen, Germany; (K.K.); (W.C.); (M.M.)
| | - Winny Chelangat
- Physical Chemistry I & Research Center of Micro and Nanochemistry and Engineering (Cμ), Department of Chemistry and Biology, University of Siegen, Adolf-Reichwein-Straße 2, 57076 Siegen, Germany; (K.K.); (W.C.); (M.M.)
- Mechatronics Engineering Department, Dedan Kimathi University of Technology, Nyeri-Mweiga Road, Nyeri 10143, Kenya
| | - Sergey I. Druzhinin
- Physical Chemistry I & Research Center of Micro and Nanochemistry and Engineering (Cμ), Department of Chemistry and Biology, University of Siegen, Adolf-Reichwein-Straße 2, 57076 Siegen, Germany; (K.K.); (W.C.); (M.M.)
| | - Nancy Wangechi Karuri
- Chemical Engineering Department, Dedan Kimathi University of Technology, Nyeri-Mweiga Road, Nyeri 10143, Kenya;
| | - Mareike Müller
- Physical Chemistry I & Research Center of Micro and Nanochemistry and Engineering (Cμ), Department of Chemistry and Biology, University of Siegen, Adolf-Reichwein-Straße 2, 57076 Siegen, Germany; (K.K.); (W.C.); (M.M.)
| | - Holger Schönherr
- Physical Chemistry I & Research Center of Micro and Nanochemistry and Engineering (Cμ), Department of Chemistry and Biology, University of Siegen, Adolf-Reichwein-Straße 2, 57076 Siegen, Germany; (K.K.); (W.C.); (M.M.)
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Korzeniewska E, Szczęsny A, Lipiński P, Dróżdż T, Kiełbasa P, Miernik A. Prototype of a Textronic Sensor Created with a Physical Vacuum Deposition Process for Staphylococcus aureus Detection. Sensors (Basel) 2020; 21:s21010183. [PMID: 33383934 PMCID: PMC7794882 DOI: 10.3390/s21010183] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 12/21/2020] [Accepted: 12/25/2020] [Indexed: 11/16/2022]
Abstract
Staphylococcus aureus is a bacterium which people have been in contact with for thousands of years. Its presence often leads to severe disorders of the respiratory and circulatory systems. The authors of this article present a prototype of a textronic sensor enabling the detection of this bacterium. This sensor was created using a process of physical vacuum deposition on a flexible textile substrate which can be implemented on clothing. With increasing numbers of bacterial colonies, changes in the sensor's electrical parameters were observed. The sensor's resistance reduced by 50% and the capacitance more than doubled within the first two days of starting bacterial cultures. Extensive changes in electrical parameters were observed at 100 Hz and 120 Hz of the measurement signal.
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Affiliation(s)
- Ewa Korzeniewska
- Faculty of Electrical, Electronic, Computer and Control Engineering, Lodz University of Technology, Stefanowskiego 18/22, 90-924 Łódź, Poland;
- Correspondence:
| | - Artur Szczęsny
- Faculty of Electrical, Electronic, Computer and Control Engineering, Lodz University of Technology, Stefanowskiego 18/22, 90-924 Łódź, Poland;
| | - Piotr Lipiński
- Faculty of Technical Physics, Information Technology and Applied Mathematics, Lodz University of Technology, ul. Wólczańska 215, 90-924 Łódź, Poland;
| | - Tomasz Dróżdż
- Faculty of Production and Power Engineering, University of Agriculture in Krakow, Balicka 116 B, 30-149 Kraków, Poland; (T.D.); (P.K.); (A.M.)
| | - Paweł Kiełbasa
- Faculty of Production and Power Engineering, University of Agriculture in Krakow, Balicka 116 B, 30-149 Kraków, Poland; (T.D.); (P.K.); (A.M.)
| | - Anna Miernik
- Faculty of Production and Power Engineering, University of Agriculture in Krakow, Balicka 116 B, 30-149 Kraków, Poland; (T.D.); (P.K.); (A.M.)
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Chen YJ, Chen YY, Wang KH, Wang CH, Yang CY, Chau LK, Wang SC. Integration of a Thermoelectric Heating Unit with Ionic Wind-Induced Droplet Centrifugation Chip to Develop Miniaturized Concentration Device for Rapid Determination of Salmonella on Food Samples Using Antibody-Functionalized SERS Tags. Sensors (Basel) 2020; 20:E7177. [PMID: 33333831 DOI: 10.3390/s20247177] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 12/04/2020] [Accepted: 12/11/2020] [Indexed: 12/12/2022]
Abstract
When a centrifugation-enriched sample of 100 μL containing the surface-enhanced Raman scattering (SERS) tag-bound bacteria (Salmonella in this study) is siphoned onto a glass slide next to an embedded thermoelectric heating chip, such a sessile droplet is quickly evaporated. As the size of the sample droplet is significantly reduced during the heating process, ionic wind streams from a corona discharge needle, stationed above the sample, sweep across the liquid surface to produce centrifugal vortex flow. Tag-bound Salmonella in the sample are then dragged and trapped at the center of droplet bottom. Finally, when the sample is dried, unlike the "coffee ring" effect, the SERS tag-bound Salmonella is concentrated in one small spot to allow sensitive detection of a Raman signal. Compared with our previous electrohydrodynamic concentration device containing only a corona discharge needle, this thermoelectric evaporation-assisted device is more time-effective, with the time of concentrating and drying about 100 μL sample reduced from 2 h to 30 min. Hence, sample throughput can be accelerated with this device for practical use. It is also more sensitive, with SERS detection of a few cells of Salmonella in neat samples achievable. We also evaluated the feasibility of using this device to detect Salmonella in food samples without performing the culturing procedures. Having spiked a few Salmonella cells into ice cubes and lettuce leaves, we use filtration and ultracentrifugation steps to obtain enriched tag-bound Salmonella samples of 200 μL. After loading an aliquot of 100 μL of sample onto this concentration device, the SERS tag signals from samples of 100 g ice cubes containing two Salmonella cells and 20 g lettuce leaf containing 5 Salmonella cells can be successfully detected.
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Zhou X, Hu Z, Yang D, Xie S, Jiang Z, Niessner R, Haisch C, Zhou H, Sun P. Bacteria Detection: From Powerful SERS to Its Advanced Compatible Techniques. Adv Sci (Weinh) 2020; 7:2001739. [PMID: 33304748 PMCID: PMC7710000 DOI: 10.1002/advs.202001739] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/24/2020] [Indexed: 05/13/2023]
Abstract
The rapid, highly sensitive, and accurate detection of bacteria is the focus of various fields, especially food safety and public health. Surface-enhanced Raman spectroscopy (SERS), with the advantages of being fast, sensitive, and nondestructive, can be used to directly obtain molecular fingerprint information, as well as for the on-line qualitative analysis of multicomponent samples. It has therefore become an effective technique for bacterial detection. Within this progress report, advances in the detection of bacteria using SERS and other compatible techniques are discussed in order to summarize its development in recent years. First, the enhancement principle and mechanism of SERS technology are briefly overviewed. The second part is devoted to a label-free strategy for the detection of bacterial cells and bacterial metabolites. In this section, important considerations that must be made to improve bacterial SERS signals are discussed. Then, the label-based SERS strategy involves the design strategy of SERS tags, the immunomagnetic separation of SERS tags, and the capture of bacteria from solution and dye-labeled SERS primers. In the third part, several novel SERS compatible technologies and applications in clinical and food safety are introduced. In the final part, the results achieved are summarized and future perspectives are proposed.
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Affiliation(s)
- Xia Zhou
- College of PharmacyJinan UniversityGuangzhouGuangdong510632China
- Department of Oncologythe First Affiliated Hospital of Jinan UniversityGuangzhouGuangdong510632China
| | - Ziwei Hu
- College of PharmacyJinan UniversityGuangzhouGuangdong510632China
| | - Danting Yang
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological TechnologyMedical School of Ningbo UniversityNingboZhejiang315211China
| | - Shouxia Xie
- The Second Clinical Medical College (Shenzhen People's Hospital)Jinan UniversityShenzhenGuangdong518020China
| | - Zhengjin Jiang
- College of PharmacyJinan UniversityGuangzhouGuangdong510632China
| | - Reinhard Niessner
- Institute of Hydrochemistry and Chair for Analytical ChemistryTechnical University of MunichMarchioninistr. 17MunichD‐81377Germany
| | - Christoph Haisch
- Institute of Hydrochemistry and Chair for Analytical ChemistryTechnical University of MunichMarchioninistr. 17MunichD‐81377Germany
| | - Haibo Zhou
- College of PharmacyJinan UniversityGuangzhouGuangdong510632China
- Department of Oncologythe First Affiliated Hospital of Jinan UniversityGuangzhouGuangdong510632China
- The Second Clinical Medical College (Shenzhen People's Hospital)Jinan UniversityShenzhenGuangdong518020China
| | - Pinghua Sun
- College of PharmacyJinan UniversityGuangzhouGuangdong510632China
- Department of Oncologythe First Affiliated Hospital of Jinan UniversityGuangzhouGuangdong510632China
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Bertelsen CV, Franco JC, Skands GE, Dimaki M, Svendsen WE. Investigating the Use of Impedance Flow Cytometry for Classifying the Viability State of E. coli. Sensors (Basel) 2020; 20:E6339. [PMID: 33172055 PMCID: PMC7664255 DOI: 10.3390/s20216339] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 10/29/2020] [Accepted: 11/03/2020] [Indexed: 01/22/2023]
Abstract
Bacteria detection, counting and analysis is of great importance in several fields. When viability plays a major role in decision making, the counting of colony-forming units grown on agar plates remains the gold standard. However, because plate counts depend on the growth of the bacteria, it is a slow procedure and only works with culturable species. Impedance flow cytometry (IFC) is a promising technology for particle detection, counting and characterization. It relies on the perturbation of an electric field by particles flowing through a microfluidic channel. The perturbation is directly related to the electrical properties of the particles, and therefore provides information about their composition and structure. In this work we investigate whether IFC can be used to differentiate viable cells from inactivated cells. Our findings demonstrate that the specific viability state of the bacteria has to be considered, but that with proper characterization thresholds, IFC can be used to classify bacterial viability states. By using three different inactivation methods-ethanol, heat and autoclavation-we have been able to show that the impedance response of Escherichia coli depends on its viability state, but that the specific response depends on the inactivation method. With these findings we expect to be able to optimize IFC for more reliable bacteria detection and counting in the future.
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Affiliation(s)
- Christian Vinther Bertelsen
- DTU Bioengineering, Technical University of Denmark, Søltofts Plads 221, 2800 Kgs. Lyngby, Denmark; (J.C.F.); (M.D.); (W.E.S.)
- SBT Instruments A/S, Symfonivej 37, 2730 Herlev, Denmark;
| | - Julio César Franco
- DTU Bioengineering, Technical University of Denmark, Søltofts Plads 221, 2800 Kgs. Lyngby, Denmark; (J.C.F.); (M.D.); (W.E.S.)
| | | | - Maria Dimaki
- DTU Bioengineering, Technical University of Denmark, Søltofts Plads 221, 2800 Kgs. Lyngby, Denmark; (J.C.F.); (M.D.); (W.E.S.)
| | - Winnie Edith Svendsen
- DTU Bioengineering, Technical University of Denmark, Søltofts Plads 221, 2800 Kgs. Lyngby, Denmark; (J.C.F.); (M.D.); (W.E.S.)
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Cabral AD, Rafiei N, de Araujo ED, Radu TB, Toutah K, Nino D, Murcar-Evans BI, Milstein JN, Kraskouskaya D, Gunning PT. Sensitive Detection of Broad-Spectrum Bacteria with Small-Molecule Fluorescent Excimer Chemosensors. ACS Sens 2020; 5:2753-2762. [PMID: 32803944 DOI: 10.1021/acssensors.9b02490] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Antibiotic resistance is a major problem for world health, triggered by the unnecessary usage of broad-spectrum antibiotics on purportedly infected patients. Current clinical standards require lengthy protocols for the detection of bacterial species in sterile physiological fluids. In this work, a class of small-molecule fluorescent chemosensors termed ProxyPhos was shown to be capable of rapid, sensitive, and facile detection of broad-spectrum bacteria. The sensors act via a turn-on fluorescent excimer mechanism, where close-proximity binding of multiple sensor units amplifies a red shift emission signal. ProxyPhos sensors were able to detect down to 10 CFUs of model strains by flow cytometry assays and showed selectivity over mammalian cells in a bacterial coculture through fluorescence microscopy. The studies reveal that the zinc(II)-chelates cyclen and cyclam are novel and effective binding units for the detection of both Gram-negative and Gram-positive bacterial strains. Mode of action studies revealed that the chemosensors detect Gram-negative and Gram-positive strains with two distinct mechanisms. Preliminary studies applying ProxyPhos sensors to sterile physiological fluids (cerebrospinal fluid) in flow cytometry assays were successful. The results suggest that ProxyPhos sensors can be developed as a rapid, inexpensive, and robust tool for the "yes-no" detection of broad-spectrum bacteria in sterile fluids.
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Affiliation(s)
- Aaron D. Cabral
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Nafiseh Rafiei
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, 164 College Street, Toronto, Ontario M5S 3G9, Canada
| | - Elvin D. de Araujo
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
| | - Tudor B. Radu
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Krimo Toutah
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
| | - Daniel Nino
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
- Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7, Canada
| | - Bronte I. Murcar-Evans
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Joshua N. Milstein
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
- Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7, Canada
| | - Dziyana Kraskouskaya
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
| | - Patrick T. Gunning
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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Yan Y, Nie Y, An L, Tang YQ, Xu Z, Wu XL. Improvement of Surface-Enhanced Raman Scattering Method for Single Bacterial Cell Analysis. Front Bioeng Biotechnol 2020; 8:573777. [PMID: 33042973 PMCID: PMC7527739 DOI: 10.3389/fbioe.2020.573777] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 08/25/2020] [Indexed: 12/26/2022] Open
Abstract
Surface-enhanced Raman scattering (SERS) is a useful tool for label-free analysis of bacteria at the single cell level. However, low reproducibility limits the use of SERS. In this study, for the sake of sensitive and reproducible Raman spectra, we optimized the methods for preparing silver nanoparticles (AgNPs) and depositing AgNPs onto a cell surface. We found that fast dropwise addition of AgNO3 into the reductant produced smaller and more stable AgNPs, with an average diameter of 45 ± 4 nm. Compared with that observed after simply mixing the bacterial cells with AgNPs, the SERS signal was significantly improved after centrifugation. To optimize the SERS enhancement method, the centrifugal force, method for preparing AgNPs, concentration of AgNPs, ionic strength of the solution used to suspend the cells, and density of the cells were chosen as impact factors and optimized through orthogonal experiments. Finally, the improved method could generate sensitive and reproducible SERS spectra from single Escherichia coli cells, and the SERS signals primarily arose from the cell envelope. We further verified that this optimal method was feasible for the detection of low to 25% incorporation of 13C isotopes by the cells and the discrimination of different bacterial species. Our work provides an improved method for generating sensitive and reproducible SERS spectra.
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Affiliation(s)
- Yingchun Yan
- Institute of New Energy and Low-carbon Technology, Sichuan University, Chengdu, China.,College of Engineering, Peking University, Beijing, China
| | - Yong Nie
- College of Engineering, Peking University, Beijing, China
| | - Liyun An
- Institute of New Energy and Low-carbon Technology, Sichuan University, Chengdu, China.,College of Engineering, Peking University, Beijing, China
| | - Yue-Qin Tang
- Institute of New Energy and Low-carbon Technology, Sichuan University, Chengdu, China
| | - Zimu Xu
- College of Engineering, Peking University, Beijing, China
| | - Xiao-Lei Wu
- College of Engineering, Peking University, Beijing, China.,Institute of Ocean Research, Peking University, Beijing, China
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Paczesny J, Richter Ł, Hołyst R. Recent Progress in the Detection of Bacteria Using Bacteriophages: A Review. Viruses 2020; 12:E845. [PMID: 32756438 DOI: 10.3390/v12080845] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/09/2020] [Accepted: 07/31/2020] [Indexed: 02/07/2023] Open
Abstract
Bacteria will likely become our most significant enemies of the 21st century, as we are approaching a post-antibiotic era. Bacteriophages, viruses that infect bacteria, allow us to fight infections caused by drug-resistant bacteria and create specific, cheap, and stable sensors for bacteria detection. Here, we summarize the recent developments in the field of phage-based methods for bacteria detection. We focus on works published after mid-2017. We underline the need for further advancements, especially related to lowering the detection (below 1 CFU/mL; CFU stands for colony forming units) and shortening the time of analysis (below one hour). From the application point of view, portable, cheap, and fast devices are needed, even at the expense of sensitivity.
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Eftimov T, Janik M, Koba M, Śmietana M, Mikulic P, Bock W. Long-Period Gratings and Microcavity In-Line Mach Zehnder Interferometers as Highly Sensitive Optical Fiber Platforms for Bacteria Sensing. Sensors (Basel) 2020; 20:E3772. [PMID: 32635648 DOI: 10.3390/s20133772] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/23/2020] [Accepted: 06/27/2020] [Indexed: 02/04/2023]
Abstract
Selected optical fiber sensors offer extraordinary sensitivity to changes in external refractive (RI), which make them promising for label-free biosensing. In this work the most sensitive ones, namely long-period gratings working at (DTP-LPG) and micro-cavity in-line Mach-Zehnder interferometers (µIMZI) are discussed for application in bacteria sensing. We describe their working principles and RI sensitivity when operating in water environments, which is as high as 20,000 nm/RIU (Refractive index unit) for DTP-LPGs and 27,000 nm/RIU for µIMZIs. Special attention is paid to the methods to enhance the sensitivity by etching and nano-coatings. While the DTP-LPGs offer a greater interaction length and sensitivity to changes taking place at their surface, the µIMZIs are best suited for investigations of sub-nanoliter and picoliter volumes. The capabilities of both the platforms for bacteria sensing are presented and compared for strains of Escherichia coli, lipopolysaccharide E. coli, outer membrane proteins of E. coli, and Staphylococcus aureus. While DTP-LPGs have been more explored for bacteria detection in 102–106 Colony Forming Unit (CFU)/mL for S. aureus and 103–109 CFU/mL for E. coli, the µIMZIs reached 102–108 CFU/mL for E. coli and have a potential for becoming picoliter bacteria sensors.
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Yao L, Zheng L, Cai G, Wang S, Wang L, Lin J. A Rapid and Sensitive Salmonella Biosensor Based on Viscoelastic Inertial Microfluidics. Sensors (Basel) 2020; 20:s20092738. [PMID: 32403342 PMCID: PMC7248794 DOI: 10.3390/s20092738] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/08/2020] [Accepted: 05/09/2020] [Indexed: 01/03/2023]
Abstract
Salmonella is a main cause of foodborne illnesses and rapid screening of Salmonella is the key to prevent Salmonella outbreaks, however available detection methods either require a long time, or need complex pretreatment, or have low sensitivity. In this study, a microfluidic biosensor was developed for Salmonella detection using viscoelastic inertial microfluidics for separating magnetic bacteria from unbound magnetic nanoparticles (MNPs) and enzyme catalytic colorimetry for amplifying biological signals. The polyclonal antibodies and horseradish peroxidase (HRP) modified MNPs were first used to specifically capture Salmonella to form magnetic HRP-bacteria. Both magnetic HRP-bacteria and unbound MNPs were magnetically separated from background and resuspended in viscoelastic polyvinylpyrrolidone solution as sample flow. When sample flow was injected with polyvinylpyrrolidone sheath flow into a T-shaped microchannel, larger-sized magnetic HRP-bacteria could penetrate the sample flow, however smaller-sized MNPs remained in the sample flow due to weaker inertial lift force and elastic lift force, resulting in continuous-flow separation of magnetic HRP-bacteria. Finally, magnetic HRP-bacteria were collected and concentrated to catalyze tetramethyl benzidine, and absorbance was measured to determine the bacteria. This biosensor was able to detect Salmonella as low as 30 CFU/mL in 1 h and featured the advantages of shorter time due to a one-step immunoreaction, easier extension due to only one antibody and one label, and lower cost due to less expensive materials.
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Pardoux É, Boturyn D, Roupioz Y. Antimicrobial Peptides as Probes in Biosensors Detecting Whole Bacteria: A Review. Molecules 2020; 25:E1998. [PMID: 32344585 PMCID: PMC7221689 DOI: 10.3390/molecules25081998] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/23/2020] [Accepted: 04/23/2020] [Indexed: 12/17/2022] Open
Abstract
Bacterial resistance is becoming a global issue due to its rapid growth. Potential new drugs as antimicrobial peptides (AMPs) are considered for several decades as promising candidates to circumvent this threat. Nonetheless, AMPs have also been used more recently in other settings such as molecular probes grafted on biosensors able to detect whole bacteria. Rapid, reliable and cost-efficient diagnostic tools for bacterial infection could prevent the spread of the pathogen from the earliest stages. Biosensors based on AMPs would enable easy monitoring of potentially infected samples, thanks to their powerful versatility and integrability in pre-existent settings. AMPs, which show a broad spectrum of interactions with bacterial membranes, can be tailored in order to design ubiquitous biosensors easily adaptable to clinical settings. This review aims to focus on the state of the art of AMPs used as the recognition elements of whole bacteria in label-free biosensors with a particular focus on the characteristics obtained in terms of threshold, volume of sample analysable and medium, in order to assess their workability in real-world applications.
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Affiliation(s)
- Éric Pardoux
- Univ. Grenoble Alpes, CNRS, CEA, IRIG, SyMMES, 38000 Grenoble, France;
- Univ. Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France;
| | - Didier Boturyn
- Univ. Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France;
| | - Yoann Roupioz
- Univ. Grenoble Alpes, CNRS, CEA, IRIG, SyMMES, 38000 Grenoble, France;
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Abstract
Simultaneous analysis based on encoded fluorophores suffers from potential crosstalk between fluorophores and the limited number of colors that can be practically resolved. Inspired by nontrivial temporal patterns in living organisms, we developed a DNA-templated probe by utilizing DNA polymerase (DNAP) for multiplexed detection of nucleic acids. These probes use differential delay times of signaling by a DNAP-mediated extension to distinguish different targets, which serve as the primers. Taking advantage of the high processivity and the controllable kinetics of DNAP, we find that multiplexed detection can be achieved in homogeneous solution using a single fluorophore. As a proof of concept, we developed assays for genomic DNA from four different bacteria. In addition, we designed and implemented probes to undergo a single oscillation in signal as an alternative way for multiplexing. We anticipate this approach will find broad applications not only in sensing but also in synthetic DNA nanosystems.
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Affiliation(s)
- Yingnan Deng
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Liang Ma
- Clinical Laboratory, China-Japan Friendship Hospital, Beijing 100029, China
| | - Qianqian Han
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Changyuan Yu
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Alexander Johnson-Buck
- Department of Internal Medicine, Division of Hematology/Oncology, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Xin Su
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
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46
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Abstract
Infections caused by antibiotic-resistant bacteria have become one of the most serious global public health crises. Early detection and effective treatment can effectively prevent deterioration and further spreading of the bacterial infections. Therefore, there is an urgent need for time-saving diagnosis as well as therapeutically potent therapy approaches. Development of nanomedicine has provided more choices for detection and therapy of bacterial infections. Ultrasmall gold nanoclusters (Au NCs) are emerging as potential antibacterial agents and have drawn intense attention in the biomedical fields owing to their excellent biocompatibility and unusual physicochemical properties. Recent significant efforts have shown that these versatile Au NCs also have great application potential in the selective detection of bacteria and infection treatment. In this review, we will provide an overview of research progress on the development of versatile Au NCs for bacterial detection and infection treatment, and the mechanisms of action of designed diagnostic and therapeutic agents will be highlighted. Based on these cases, we have briefly discussed the current issues and perspective of Au NCs for bacterial detection and infection treatment applications.
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Affiliation(s)
- Mingxiu Tang
- The Second Affiliated Hospital, Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China
| | - Jian Zhang
- The Second Affiliated Hospital, Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China
| | - Chunyan Yang
- The Second Affiliated Hospital, Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China
| | - Youkun Zheng
- Key Laboratory of Medical Electrophysiology of Ministry of Education, Drug Discovery Research Center, Southwest Medical University, Luzhou, China
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, China
| | - Hui Jiang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, China
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Zakharzhevskii M, Drozdov AS, Kolchanov DS, Shkodenko L, Vinogradov VV. Test-System for Bacteria Sensing Based on Peroxidase-Like Activity of Inkjet-Printed Magnetite Nanoparticles. Nanomaterials (Basel) 2020; 10:nano10020313. [PMID: 32059377 PMCID: PMC7075215 DOI: 10.3390/nano10020313] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/05/2020] [Accepted: 02/08/2020] [Indexed: 01/29/2023]
Abstract
Rapid detection of bacterial contamination is an essential task in numerous medical and technical processes and one of the most rapidly developing areas of nano-based analytics. Here, we present a simple-to-use and special-equipment-free test-system for bacteria detection based on magnetite nanoparticle arrays. The system is based on peroxide oxidation of chromogenic substrate catalyzed by magnetite nanoparticles, and the process undergoes computer-aided visual analysis. The nanoparticles used had a pristine surface free of adsorbed molecules and demonstrated high catalytic activities up to 6585 U/mg. The catalytic process showed the Michaelis–Menten kinetic with Km valued 1.22 mmol/L and Vmax of 4.39 µmol/s. The nanoparticles synthesized were used for the creation of inkjet printing inks and the design of sensor arrays by soft lithography. The printed sensors require no special equipment for data reading and showed a linear response for the detection of model bacteria in the range of 104–108 colony-forming units (CFU) per milliliter with the detection limit of 3.2 × 103 CFU/mL.
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48
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Clausen CH, Dimaki M, Bertelsen CV, Skands GE, Rodriguez-Trujillo R, Thomsen JD, Svendsen WE. Bacteria Detection and Differentiation Using Impedance Flow Cytometry. Sensors (Basel) 2018; 18:E3496. [PMID: 30336557 DOI: 10.3390/s18103496] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 10/11/2018] [Accepted: 10/15/2018] [Indexed: 12/01/2022]
Abstract
Monitoring of bacteria concentrations is of great importance in drinking water management. Continuous real-time monitoring enables better microbiological control of the water and helps prevent contaminated water from reaching the households. We have developed a microfluidic sensor with the potential to accurately assess bacteria levels in drinking water in real-time. Multi frequency electrical impedance spectroscopy is used to monitor a liquid sample, while it is continuously passed through the sensor. We investigate three aspects of this sensor: First we show that the sensor is able to differentiate Escherichia coli (Gram-negative) bacteria from solid particles (polystyrene beads) based on an electrical response in the high frequency phase and individually enumerate the two samples. Next, we demonstrate the sensor’s ability to measure the bacteria concentration by comparing the results to those obtained by the traditional CFU counting method. Last, we show the sensor’s potential to distinguish between different bacteria types by detecting different signatures for S. aureus and E. coli mixed in the same sample. Our investigations show that the sensor has the potential to be extremely effective at detecting sudden bacterial contaminations found in drinking water, and eventually also identify them.
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Kögler M, Ryabchikov YV, Uusitalo S, Popov A, Popov A, Tselikov G, Välimaa AL, Al-Kattan A, Hiltunen J, Laitinen R, Neubauer P, Meglinski I, Kabashin AV. Bare laser-synthesized Au-based nanoparticles as nondisturbing surface-enhanced Raman scattering probes for bacteria identification. J Biophotonics 2018; 11:e201700225. [PMID: 29388744 DOI: 10.1002/jbio.201700225] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 01/28/2018] [Accepted: 01/29/2018] [Indexed: 06/07/2023]
Abstract
The ability of noble metal-based nanoparticles (NPs) (Au, Ag) to drastically enhance Raman scattering from molecules placed near metal surface, termed as surface-enhanced Raman scattering (SERS), is widely used for identification of trace amounts of biological materials in biomedical, food safety and security applications. However, conventional NPs synthesized by colloidal chemistry are typically contaminated by nonbiocompatible by-products (surfactants, anions), which can have negative impacts on many live objects under examination (cells, bacteria) and thus decrease the precision of bioidentification. In this article, we explore novel ultrapure laser-synthesized Au-based nanomaterials, including Au NPs and AuSi hybrid nanostructures, as mobile SERS probes in tasks of bacteria detection. We show that these Au-based nanomaterials can efficiently enhance Raman signals from model R6G molecules, while the enhancement factor depends on the content of Au in NP composition. Profiting from the observed enhancement and purity of laser-synthesized nanomaterials, we demonstrate successful identification of 2 types of bacteria (Listeria innocua and Escherichia coli). The obtained results promise less disturbing studies of biological systems based on good biocompatibility of contamination-free laser-synthesized nanomaterials.
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Affiliation(s)
- Martin Kögler
- Drug Research Program, Division of Pharmaceutical Biosciences, Centre for Drug Research, University of Helsinki, Helsinki, Finland
- Chair of Bioprocess Engineering, Institute of Biotechnology, Technische Universität Berlin, Berlin, Germany
| | - Yury V Ryabchikov
- Aix-Marseille Univ, CNRS, Marseille, France
- P.N. Lebedev Physical Institute of Russian Academy of Sciences, Moscow, Russia
| | - Sanna Uusitalo
- VTT - Technical Research Centre of Finland, Oulu, Finland
| | - Alexey Popov
- Optoelectronics and Measurement Techniques, Faculty of Information Technology and Electrical Engineering, University of Oulu, Oulu, Finland
- ITMO University, St. Petersburg, Russia
| | | | | | - Anna-Liisa Välimaa
- National Resources Institute Finland (LUKE), Bio-based Business and Industry, University of Oulu, Oulu, Finland
| | | | - Jussi Hiltunen
- VTT - Technical Research Centre of Finland, Oulu, Finland
| | - Riitta Laitinen
- Natural Research Institute Finland (LUKE), Bio-based Business and Industry, Turku, Finland
| | - Peter Neubauer
- Chair of Bioprocess Engineering, Institute of Biotechnology, Technische Universität Berlin, Berlin, Germany
| | - Igor Meglinski
- Optoelectronics and Measurement Techniques, Faculty of Information Technology and Electrical Engineering, University of Oulu, Oulu, Finland
- ITMO University, St. Petersburg, Russia
- National Research Nuclear University "MEPhI", Institute of Engineering Physics for Biomedicine (PhysBio), Moscow, Russia
| | - Andrei V Kabashin
- Aix-Marseille Univ, CNRS, Marseille, France
- National Research Nuclear University "MEPhI", Institute of Engineering Physics for Biomedicine (PhysBio), Moscow, Russia
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50
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Arcas ADS, Dutra FDS, Allil RCSB, Werneck MM. Surface Plasmon Resonance and Bending Loss-Based U-Shaped Plastic Optical Fiber Biosensors. Sensors (Basel) 2018; 18:s18020648. [PMID: 29470426 PMCID: PMC5856140 DOI: 10.3390/s18020648] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 01/30/2018] [Accepted: 02/08/2018] [Indexed: 11/16/2022]
Abstract
Escherichia coli (E. coli) is a large and diverse bacteria group that inhabits the intestinal tract of many mammals. Most E. coli strains are harmless, however some of them are pathogenic, meaning they can make one sick if ingested. By being in the feces of animals and humans, its presence in water and food is used as indicator of fecal contamination. The main method for this microorganism detection is the bacterial culture medium that is time-consuming and requires a laboratory with specialized personnel. Other sophisticated methods are still not fast enough because they require sending samples to a laboratory and with a high cost of analysis. In this paper, a gold-coated U-shaped plastic optical fiber (POF) biosensor for E. coli bacteria detection is presented. The biosensor works by intensity modulation principle excited by monochromatic light where the power absorption is imposed by predominant effect of either bending loss or surface plasmon resonance (SPR), depending on the gold thickness. Bacterial selectivity is obtained by antibody immobilization on the fiber surface. The biosensor showed a detection limit of 1.5 × 103 colony-forming units (CFU)/mL, demonstrating that the technology can be a portable, fast response and low-cost alternative to conventional methodologies for quality analysis of water and food.
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Affiliation(s)
- Ariadny da S Arcas
- Nanotechnology Engineering Program, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil.
| | - Fábio da S Dutra
- Nanotechnology Engineering Program, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil.
- Petrobras' Research and Development Center, CENPES, Rio de Janeiro 21941-915, Brazil.
| | - Regina C S B Allil
- Electrical Engineering Program, COPPE, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil.
| | - Marcelo M Werneck
- Nanotechnology Engineering Program, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil.
- Electrical Engineering Program, COPPE, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil.
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