1
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Tripathi A, Park J, Pho T, Champion JA. Dual Antibacterial Properties of Copper-Coated Nanotextured Stainless Steel. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2311546. [PMID: 38766975 DOI: 10.1002/smll.202311546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 05/07/2024] [Indexed: 05/22/2024]
Abstract
Bacterial adhesion to stainless steel, an alloy commonly used in shared settings, numerous medical devices, and food and beverage sectors, can give rise to serious infections, ultimately leading to morbidity, mortality, and significant healthcare expenses. In this study, Cu-coated nanotextured stainless steel (nSS) fabrication have been demonstrated using electrochemical technique and its potential as an antibiotic-free biocidal surface against Gram-positive and negative bacteria. As nanotexture and Cu combine for dual methods of killing, this material should not contribute to drug-resistant bacteria as antibiotic use does. This approach involves applying a Cu coating on nanotextured stainless steel, resulting in an antibacterial activity within 30 min. Comprehensive characterization of the surface revealing that the Cu coating consists of metallic Cu and oxidized states (Cu2+ and Cu+), has been performed by this study. Cu-coated nSS induces a remarkable reduction of 97% in Gram-negative Escherichia coli and 99% Gram-positive Staphylococcus epidermidis bacteria. This material has potential to be used to create effective, scalable, and sustainable solutions to prevent bacterial infections caused by surface contamination without contributing to antibiotic resistance.
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Affiliation(s)
- Anuja Tripathi
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Drive, Atlanta, Georgia, 30332, USA
| | - Jaeyoung Park
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Drive, Atlanta, Georgia, 30332, USA
| | - Thomas Pho
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Drive, Atlanta, Georgia, 30332, USA
| | - Julie A Champion
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Drive, Atlanta, Georgia, 30332, USA
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2
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Jaramillo-Correa C, Posada VM, Nashed J, Civantos A, Allain JP. Analysis of Antibacterial Efficacy and Cellular Alignment Regulation on Plasma Nanotextured Chitosan Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:14573-14585. [PMID: 37797266 DOI: 10.1021/acs.langmuir.3c01808] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
To address implant-related infections, antibacterial solutions specific to biomaterials are required to prevent bacterial proliferation. Traditional antibiotic usage has been found insufficient, motivating researchers to investigate alternative strategies such as surface modification and the application of antifouling or infection-resistant properties. A developing interest lies in designing surfaces that mimic natural antibacterial nanotopographies. In this study, we conducted a quantitative analysis of the outcomes from plasma nanotexturing, with particular emphasis on how the organization of topography influences antibacterial efficacy and the regulation of cell alignment. Plasma nanotexturing was applied to chitosan surfaces, which gradually transformed from nanopores to pillars and eventually into tilted pillars, as the plasma parameters (fluence and angle) increased. We used directed plasma nanosynthesis, a plasma-based technique that primarily induces topographical alterations on the surfaces. The surfaces were systematically characterized, incorporating methods such as scanning electron microscopy (SEM), atomic force microscopy (AFM), and X-ray photoelectron spectroscopy (XPS). A comprehensive comparison of the nanotextures was executed by utilizing a trapezoidal method to calculate aspect ratios and assess texture orientation by examining the gaps in the nanostructures. We evaluated antibacterial properties against E. coli and S. aureus strains and assessed the survival and alignment of human bone marrow mesenchymal stem cells. Our findings reveal a significant reduction in bacterial adhesion (>80%) and growth on nanotextured surfaces, underscoring their potential for clinical applications. Moreover, we measured cell alignment, presenting the results in both a color-coded and numerical format to demonstrate the preferential alignment orientation induced specially by the tilted nanotexture. These insights highlight the profound impacts of plasma nanotexturing, indicating its potential for innovative biomedical applications such as advanced wound healing and tissue engineering.
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Affiliation(s)
- Camilo Jaramillo-Correa
- Ken and Mary Alice Lindquist Department of Nuclear Engineering, Pennsylvania State University, University Park, Pennsylvania 16082, United States
- Nuclear, Plasma & Radiological Engineering Department, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Viviana M Posada
- Ken and Mary Alice Lindquist Department of Nuclear Engineering, Pennsylvania State University, University Park, Pennsylvania 16082, United States
| | - Jordan Nashed
- Ken and Mary Alice Lindquist Department of Nuclear Engineering, Pennsylvania State University, University Park, Pennsylvania 16082, United States
| | - Ana Civantos
- Nuclear, Plasma & Radiological Engineering Department, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Jean Paul Allain
- Ken and Mary Alice Lindquist Department of Nuclear Engineering, Pennsylvania State University, University Park, Pennsylvania 16082, United States
- Nuclear, Plasma & Radiological Engineering Department, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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3
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Kaushal S, Priyadarshi N, Garg P, Singhal NK, Lim DK. Nano-Biotechnology for Bacteria Identification and Potent Anti-bacterial Properties: A Review of Current State of the Art. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2529. [PMID: 37764558 PMCID: PMC10536455 DOI: 10.3390/nano13182529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 08/26/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023]
Abstract
Sepsis is a critical disease caused by the abrupt increase of bacteria in human blood, which subsequently causes a cytokine storm. Early identification of bacteria is critical to treating a patient with proper antibiotics to avoid sepsis. However, conventional culture-based identification takes a long time. Polymerase chain reaction (PCR) is not so successful because of the complexity and similarity in the genome sequence of some bacterial species, making it difficult to design primers and thus less suitable for rapid bacterial identification. To address these issues, several new technologies have been developed. Recent advances in nanotechnology have shown great potential for fast and accurate bacterial identification. The most promising strategy in nanotechnology involves the use of nanoparticles, which has led to the advancement of highly specific and sensitive biosensors capable of detecting and identifying bacteria even at low concentrations in very little time. The primary drawback of conventional antibiotics is the potential for antimicrobial resistance, which can lead to the development of superbacteria, making them difficult to treat. The incorporation of diverse nanomaterials and designs of nanomaterials has been utilized to kill bacteria efficiently. Nanomaterials with distinct physicochemical properties, such as optical and magnetic properties, including plasmonic and magnetic nanoparticles, have been extensively studied for their potential to efficiently kill bacteria. In this review, we are emphasizing the recent advances in nano-biotechnologies for bacterial identification and anti-bacterial properties. The basic principles of new technologies, as well as their future challenges, have been discussed.
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Affiliation(s)
- Shimayali Kaushal
- KU-KIST Graduate School of Converging Science and Technology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea;
| | - Nitesh Priyadarshi
- National Agri-Food Biotechnology Institute (NABI), Sector-81, Mohali 140306, India; (N.P.); (P.G.)
| | - Priyanka Garg
- National Agri-Food Biotechnology Institute (NABI), Sector-81, Mohali 140306, India; (N.P.); (P.G.)
| | - Nitin Kumar Singhal
- National Agri-Food Biotechnology Institute (NABI), Sector-81, Mohali 140306, India; (N.P.); (P.G.)
| | - Dong-Kwon Lim
- KU-KIST Graduate School of Converging Science and Technology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea;
- Department of Integrative Energy Engineering, College of Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
- Brain Science Institute, Korea Institute of Science and Technology (KIST), 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
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4
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Xesfyngi Y, Georgoutsou-Spyridonos M, Tripathy A, Milionis A, Poulikakos D, Mastellos DC, Tserepi A. A High-Performance Antibacterial Nanostructured ZnO Microfluidic Device for Controlled Bacterial Lysis and DNA Release. Antibiotics (Basel) 2023; 12:1276. [PMID: 37627695 PMCID: PMC10451374 DOI: 10.3390/antibiotics12081276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/27/2023] [Accepted: 08/01/2023] [Indexed: 08/27/2023] Open
Abstract
In this work, the antibacterial properties of nanostructured zinc oxide (ZnO) surfaces are explored by incorporating them as walls in a simple-to-fabricate microchannel device. Bacterial cell lysis is demonstrated and quantified in such a device, which functions due to the action of its nanostructured ZnO surfaces in contact with the working fluid. To shed light on the mechanism responsible for lysis, E. coli bacteria were incubated in zinc and nanostructured ZnO substrates, as well as the here-investigated ZnO-based microfluidic devices. The unprecedented killing efficiency of E. coli in nanostructured ZnO microchannels, effective after a 15 min incubation, paves the way for the implementation of such microfluidic chips in the disinfection of bacteria-containing solutions. In addition, the DNA release was confirmed by off-chip PCR and UV absorption measurements. The results indicate that the present nanostructured ZnO-based microfluidic chip can, under light, achieve partial inactivation of the released bacterial DNA via reactive oxygen species-mediated oxidative damage. The present device concept can find broader applications in cases where the presence of DNA in a sample is not desirable. Furthermore, the present microchannel device enables, in the dark, efficient release of bacterial DNA for downstream genomic DNA analysis. The demonstrated potential of this antibacterial device for tailored dual functionality in light/dark conditions is the main novel contribution of the present work.
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Affiliation(s)
- Yvonni Xesfyngi
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research (NCSR) “Demokritos”, Patr. Gregoriou E’ and 27 Neapoleos Str., 15341 Aghia Paraskevi, Greece; (Y.X.); (M.G.-S.)
| | - Maria Georgoutsou-Spyridonos
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research (NCSR) “Demokritos”, Patr. Gregoriou E’ and 27 Neapoleos Str., 15341 Aghia Paraskevi, Greece; (Y.X.); (M.G.-S.)
| | - Abinash Tripathy
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland; (A.T.); (A.M.); (D.P.)
| | - Athanasios Milionis
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland; (A.T.); (A.M.); (D.P.)
| | - Dimos Poulikakos
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland; (A.T.); (A.M.); (D.P.)
| | - Dimitrios C. Mastellos
- Institute of Nuclear & Radiological Sciences and Technology, Energy & Safety, National Center for Scientific Research (NCSR) “Demokritos”, Patr. Gregoriou E’ and 27 Neapoleos Str., 15341 Aghia Paraskevi, Greece;
| | - Angeliki Tserepi
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research (NCSR) “Demokritos”, Patr. Gregoriou E’ and 27 Neapoleos Str., 15341 Aghia Paraskevi, Greece; (Y.X.); (M.G.-S.)
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5
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Catley T, Corrigan RM, Parnell AJ. Designing Effective Antimicrobial Nanostructured Surfaces: Highlighting the Lack of Consensus in the Literature. ACS OMEGA 2023; 8:14873-14883. [PMID: 37151499 PMCID: PMC10157858 DOI: 10.1021/acsomega.2c08068] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 04/07/2023] [Indexed: 05/09/2023]
Abstract
Research into nanostructured materials, inspired by the topography of certain insect wings, has provided a potential pathway toward drug-free antibacterial surfaces, which may be vital in the ongoing battle against antimicrobial resistance. However, to produce viable antibacterial nanostructured surfaces, we must first understand the bactericidal mechanism of action and how to optimize them to kill the widest range of microorganisms. This review discusses the parameters of nanostructured surfaces that have been shown to influence their bactericidal efficiency and highlights the highly variable nature of many of the findings. A large-scale analysis of the literature is also presented, which further shows a lack of clarity in what is understood about the factors influencing bactericidal efficiency. The potential reasons for the ambiguity, including how the killing effect may be a result of multiple factors and issues with nonstandardized testing of the antibacterial properties of nanostructured surfaces, are then discussed. Finally, a standard method for testing of antimicrobial killing is proposed that will allow comparison between studies and enable a deeper understanding about nanostructured surfaces and how to optimize their bactericidal efficiency.
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Affiliation(s)
- Thomas
E. Catley
- Department
of Physics and Astronomy, University of
Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, United Kingdom
| | - Rebecca M. Corrigan
- Molecular
Microbiology, School of Biosciences, University
of Sheffield, Firth Court, Sheffield S10 2TN, United Kingdom
| | - Andrew J. Parnell
- Department
of Physics and Astronomy, University of
Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, United Kingdom
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6
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Kumar N, Poulose V, Laz YT, Chandra F, Abubakar S, Abdelhamid AS, Alzamly A, Saleh N. Temperature Control of Yellow Photoluminescence from SiO 2-Coated ZnO Nanocrystals. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3368. [PMID: 36234495 PMCID: PMC9565792 DOI: 10.3390/nano12193368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/23/2022] [Accepted: 09/25/2022] [Indexed: 06/16/2023]
Abstract
In this study, we aimed to elucidate the effects of temperature on the photoluminescence from ZnO-SiO2 nanocomposite and to describe the preparation of SiO2-coated ZnO nanocrystals using a chemical precipitation method, as confirmed by Fourier transform infrared (FTIR) and powder X-ray diffraction analysis (XRD) techniques. Analyses using high-resolution transmission microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), dynamic light scattering (DLS), and electrophoretic light scattering (ELS) techniques showed that the new nanocomposite has an average size of 70 nm and 90% silica. Diffuse reflectance spectroscopy (DRS), photoluminescence (PL), and photoluminescence-excitation (PLE) measurements at different temperatures revealed two emission bands at 385 and 590 nm when the nanomaterials were excited at 325 nm. The UV and yellow emission bands were attributed to the radiative recombination and surface defects. The variable-temperature, time-resolved photoluminescence (VT-TRPL) measurements in the presence of SiO2 revealed the increase in the exciton lifetime values and the interplay of the thermally induced nonradiative recombination transfer of the excited-state population of the yellow emission via deep centers (DC). The results pave the way for more applications in photocatalysis and biomedical technology.
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Affiliation(s)
- Narender Kumar
- Department of Chemistry, College of Science, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Vijo Poulose
- Department of Chemistry, College of Science, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Youssef Taiser Laz
- Academic Support Department, Abu Dhabi Polytechnic, Al Ain P.O. Box 15551, United Arab Emirate
| | - Falguni Chandra
- Department of Chemistry, College of Science, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Salma Abubakar
- Science Division, New York University Abu Dhabi (NYUAD), Saadiyat Island P.O. Box 129188, United Arab Emirates
| | - Abdalla S. Abdelhamid
- Department of Chemistry, College of Science, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Ahmed Alzamly
- Department of Chemistry, College of Science, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Na’il Saleh
- Department of Chemistry, College of Science, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
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7
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Kanao E, Nakano K, Kamei R, Hosomi T, Ishihama Y, Adachi J, Kubo T, Otsuka K, Yanagida T. Moderate molecular recognitions on ZnO m-plane and their selective capture/release of bio-related phosphoric acids. NANOSCALE ADVANCES 2022; 4:1649-1658. [PMID: 36134362 PMCID: PMC9417451 DOI: 10.1039/d1na00865j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 02/16/2022] [Indexed: 05/25/2023]
Abstract
Herein, we explore the hidden molecular recognition abilities of ZnO nanowires uniformly grown on the inner surface of an open tubular fused silica capillary via liquid chromatography. Chromatographic evaluation revealed that ZnO nanowires showed a stronger intermolecular interaction with phenylphosphoric acid than any other monosubstituted benzene. Furthermore, ZnO nanowires specifically recognized the phosphate groups present in nucleotides even in the aqueous mobile phase, and the intermolecular interaction increased with the number of phosphate groups. This discrimination of phosphate groups in nucleotides was unique to the rich (101̄0) m-plane of ZnO nanowires with a moderate hydrophilicity and negative charge. The discrimination could be evidenced by the changes in the infrared bands of the phosphate groups on nucleotides on ZnO nanowires. Finally, as an application of the molecular recognition, nucleotides were separated by the number of phosphate groups, utilizing optimized gradient elution on ZnO nanowire column. Thus, the present results elucidate the unique and versatile molecular selectivity of well-known ZnO nanostructures for the capture and separation of biomolecules.
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Affiliation(s)
- Eisuke Kanao
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo-ku Kyoto 606-8501 Japan +81-75-753-4601 +81-75-753-4565
- National Institutes of Bio Medical Innovation, Health and Nutrition Ibaraki Osaka 567-0085 Japan
| | - Katsuya Nakano
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku Kyoto 615-8510 Japan +81-75-383-2450 +81-75-383-2448
| | - Ryoma Kamei
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8654 Japan
| | - Takuro Hosomi
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8654 Japan
- Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST) 4-1-8 Honcho, Kawaguchi Saitama 332-0012 Japan
| | - Yasushi Ishihama
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo-ku Kyoto 606-8501 Japan +81-75-753-4601 +81-75-753-4565
- National Institutes of Bio Medical Innovation, Health and Nutrition Ibaraki Osaka 567-0085 Japan
| | - Jun Adachi
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo-ku Kyoto 606-8501 Japan +81-75-753-4601 +81-75-753-4565
- National Institutes of Bio Medical Innovation, Health and Nutrition Ibaraki Osaka 567-0085 Japan
| | - Takuya Kubo
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku Kyoto 615-8510 Japan +81-75-383-2450 +81-75-383-2448
| | - Koji Otsuka
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku Kyoto 615-8510 Japan +81-75-383-2450 +81-75-383-2448
| | - Takeshi Yanagida
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8654 Japan
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8
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Takahashi H, Baba Y, Yasui T. Oxide nanowire microfluidics addressing previously-unattainable analytical methods for biomolecules towards liquid biopsy. Chem Commun (Camb) 2021; 57:13234-13245. [PMID: 34825908 DOI: 10.1039/d1cc05096f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Nanowire microfluidics using a combination of self-assembly and nanofabrication technologies is expected to be applied to various fields due to its unique properties. We have been working on the fabrication of nanowire microfluidic devices and the development of analytical methods for biomolecules using the unique phenomena generated by the devices. The results of our research are not just limited to the development of nanospace control with "targeted dimensions" in "targeted arrangements" with "targeted materials/surfaces" in "targeted spatial locations/structures" in microfluidic channels, but also cover a wide range of analytical methods for biomolecules (extraction, separation/isolation, and detection) that are impossible to achieve with conventional technologies. Specifically, we are working on the extraction technology "the cancer-related microRNA extraction method in urine," the separation technology "the ultrafast and non-equilibrium separation method for biomolecules," and the detection technology "the highly sensitive electrical measurement method." These research studies are not just limited to the development of biomolecule analysis technology using nanotechnology, but are also opening up a new academic field in analytical chemistry that may lead to the discovery of new pretreatment, separation, and detection principles.
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Affiliation(s)
- Hiromi Takahashi
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Yoshinobu Baba
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.,Institute of Nano-Life-Systems, Institutes of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.,Institute of Quantum Life Science, National Institutes for Quantum Science and Technology, Anagawa 4-9-1, Inage-ku, Chiba 263-8555, Japan
| | - Takao Yasui
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.,Institute of Nano-Life-Systems, Institutes of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.,Japan Science and Technology Agency (JST), PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
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9
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Advances in Nanofluidics. MICROMACHINES 2021; 12:mi12040427. [PMID: 33919709 PMCID: PMC8070681 DOI: 10.3390/mi12040427] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 04/07/2021] [Indexed: 11/21/2022]
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10
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Grynyuk II, Vasyliuk OM, Prylutska SV, Strutynska NY, Livitska OV, Slobodyanik MS. Influence of nanoscale-modified apatite-type calcium phosphates on the biofilm formation by pathogenic microorganisms. OPEN CHEM 2021. [DOI: 10.1515/chem-2021-0199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Abstract
Nanoparticles (25–50 nm) of chemically modified calcium phosphates Ca10−x−y
M
ii
x
Na
y
(PO4)6−z
(CO3)
z
(OH)2 (M
ii
– Cu2+, Zn2+) were synthesized via a wet precipitation method at room temperature. The Fourier-transform infrared spectroscopy data confirmed the partial substitution of
PO
4
3
−
{\text{PO}}_{4}^{3-}
→
CO
3
2
−
{\text{CO}}_{3}^{2-}
(B-type) in apatite-type structure. The influence of prepared phosphates on biofilm formation by pathogenic microorganisms was investigated. It was found that the samples Na+,
CO
3
2
−
{\text{CO}}_{3}^{2-}
-hydroxyapatite (HAP) and Na+, Zn2+,
CO
3
2
−
{\text{CO}}_{3}^{2-}
-HAP (5–20 mM) had the highest inhibitory effect on biofilm formation by Staphylococcus aureus strains. The sample Na+,
CO
3
2
−
{\text{CO}}_{3}^{2-}
-HAP had the slight influence on the formation of the biofilm by Pseudomonas aeruginosa, while for the samples Na+, Cu2+,
CO
3
2
−
{\text{CO}}_{3}^{2-}
-HAP and Na+, Zn2+,
CO
3
2
−
{\text{CO}}_{3}^{2-}
-HAP such an effect was not detected. According to transmission electron microscopy data, a correlation between the activity of synthesized apatite-related modified calcium phosphates in the processes of biofilm formation and their ability to adhere to the surface of bacterial cells was established. The prepared samples can be used for the design of effective materials with antibacterial activity for medicine.
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Affiliation(s)
- Iryna I. Grynyuk
- Department Chemistry, Taras Shevchenko National University of Kyiv , 64/13, Volodymyrska Str., 01601 , Kyiv , Ukraine
| | - Olga M. Vasyliuk
- Department of Physiology of Industrial Microorganisms, Zabolotny Institute of Microbiology and Virology, National Academy of Science of Ukraine , 154, Zabolotnogo str, 03143 , Kyiv , Ukraine
| | - Svitlana V. Prylutska
- Department Chemistry, Taras Shevchenko National University of Kyiv , 64/13, Volodymyrska Str., 01601 , Kyiv , Ukraine
| | - Nataliia Yu. Strutynska
- Department Chemistry, Taras Shevchenko National University of Kyiv , 64/13, Volodymyrska Str., 01601 , Kyiv , Ukraine
| | - Oksana V. Livitska
- Department Chemistry, Taras Shevchenko National University of Kyiv , 64/13, Volodymyrska Str., 01601 , Kyiv , Ukraine
| | - Mykola S. Slobodyanik
- Department Chemistry, Taras Shevchenko National University of Kyiv , 64/13, Volodymyrska Str., 01601 , Kyiv , Ukraine
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11
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Musa M, Yasui T, Nagashima K, Horiuchi M, Zhu Z, Liu Q, Shimada T, Arima A, Yanagida T, Baba Y. ZnO/SiO 2 core/shell nanowires for capturing CpG rich single-stranded DNAs. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:337-344. [PMID: 33393567 DOI: 10.1039/d0ay02138e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Atomic layer deposition (ALD) is capable of providing an ultrathin layer on high-aspect ratio structures with good conformality and tunable film properties. In this research, we modified the surface of ZnO nanowires through ALD for the fabrication of a ZnO/SiO2 (core/shell) nanowire microfluidic device which we utilized for the capture of CpG-rich single-stranded DNAs (ssDNA). Structural changes of the nanowires while varying the number of ALD cycles were evaluated by statistical analysis and their relationship with the capture efficiency was investigated. We hypothesized that finding the optimum number of ALD cycles would be crucial to ensure adequate coating for successful tuning to the desired surface properties, besides promoting a sufficient trapping region with optimal spacing size for capturing the ssDNAs as the biomolecules traverse through the dispersed nanowires. Using the optimal condition, we achieved high capture efficiency of ssDNAs (86.7%) which showed good potential to be further extended for the analysis of CpG sites in cancer-related genes. This finding is beneficial to the future design of core/shell nanowires for capturing ssDNAs in biomedical applications.
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Affiliation(s)
- Marina Musa
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
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12
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Abebe B, Zereffa EA, Tadesse A, Murthy HCA. A Review on Enhancing the Antibacterial Activity of ZnO: Mechanisms and Microscopic Investigation. NANOSCALE RESEARCH LETTERS 2020; 15:190. [PMID: 33001404 PMCID: PMC7530163 DOI: 10.1186/s11671-020-03418-6] [Citation(s) in RCA: 110] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 09/21/2020] [Indexed: 05/27/2023]
Abstract
Metal oxide nanomaterials are one of the preferences as antibacterial active materials. Due to its distinctive electronic configuration and suitable properties, ZnO is one of the novel antibacterial active materials. Nowadays, researchers are making a serious effort to improve the antibacterial activities of ZnO by forming a composite with the same/different bandgap semiconductor materials and doping of ions. Applying capping agents such as polymers and plant extract that control the morphology and size of the nanomaterials and optimizing different conditions also enhance the antibacterial activity. Forming a nanocomposite and doping reduces the electron/hole recombination, increases the surface area to volume ratio, and also improves the stability towards dissolution and corrosion. The release of antimicrobial ions, electrostatic interaction, reactive oxygen species (ROS) generations are the crucial antibacterial activity mechanism. This review also presents a detailed discussion of the antibacterial activity improvement of ZnO by forming a composite, doping, and optimizing different conditions. The morphological analysis using scanning electron microscopy, field emission-scanning electron microscopy, field-emission transmission electron microscopy, fluorescence microscopy, and confocal microscopy can confirm the antibacterial activity and also supports for developing a satisfactory mechanism. Graphical abstract showing the metal oxides antibacterial mechanism and the fluorescence and scanning electron microscopic images.
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Affiliation(s)
- Buzuayehu Abebe
- Department of Applied Chemistry, School of Applied Natural Sciences, Adama Science and Technology University, P.O. Box: 1888, Adama, Ethiopia.
| | - Enyew Amare Zereffa
- Department of Applied Chemistry, School of Applied Natural Sciences, Adama Science and Technology University, P.O. Box: 1888, Adama, Ethiopia
| | - Aschalew Tadesse
- Department of Applied Chemistry, School of Applied Natural Sciences, Adama Science and Technology University, P.O. Box: 1888, Adama, Ethiopia
| | - H C Ananda Murthy
- Department of Applied Chemistry, School of Applied Natural Sciences, Adama Science and Technology University, P.O. Box: 1888, Adama, Ethiopia.
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