1
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Cuahtecontzi Delint R, Ishak MI, Tsimbouri PM, Jayawarna V, Burgess KVE, Ramage G, Nobbs AH, Damiati L, Salmeron-Sanchez M, Su B, Dalby MJ. Nanotopography Influences Host-Pathogen Quorum Sensing and Facilitates Selection of Bioactive Metabolites in Mesenchymal Stromal Cells and Pseudomonas aeruginosa Co-Cultures. ACS APPLIED MATERIALS & INTERFACES 2024; 16:43374-43386. [PMID: 39113638 PMCID: PMC11345723 DOI: 10.1021/acsami.4c09291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 07/30/2024] [Accepted: 07/30/2024] [Indexed: 08/23/2024]
Abstract
Orthopedic implant-related bacterial infections and resultant antibiotic-resistant biofilms hinder implant-tissue integration and failure. Biofilm quorum sensing (QS) communication determines the pathogen colonization success. However, it remains unclear how implant modifications and host cells are influenced by, or influence, QS. High aspect ratio nanotopographies have shown to reduce biofilm formation of Pseudomonas aeruginosa, a sepsis causing pathogen with well-defined QS molecules. Producing such nanotopographies in relevant orthopedic materials (i.e., titanium) allows for probing QS using mass spectrometry-based metabolomics. However, nanotopographies can reduce host cell adhesion and regeneration. Therefore, we developed a polymer (poly(ethyl acrylate), PEA) coating that organizes extracellular matrix proteins, promoting bioactivity to host cells such as human mesenchymal stromal cells (hMSCs), maintaining biofilm reduction. This allowed us to investigate how hMSCs, after winning the race for the surface against pathogenic cells, interact with the biofilm. Our approach revealed that nanotopographies reduced major virulence pathways, such as LasR. The enhanced hMSCs support provided by the coated nanotopographies was shown to suppress virulence pathways and biofilm formation. Finally, we selected bioactive metabolites and demonstrated that these could be used as adjuncts to the nanostructured surfaces to reduce biofilm formation and enhance hMSC activity. These surfaces make excellent models to study hMSC-pathogen interactions and could be envisaged for use in novel orthopedic implants.
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Affiliation(s)
- Rosalia Cuahtecontzi Delint
- Centre
for the Cellular Microenvironment, School of Molecular Biosciences,
College of Medical, Veterinary and Life Sciences, Mazumdar-Shaw Advanced
Research Centre, University of Glasgow, Glasgow G11 6EW, United Kingdom
| | - Mohd I. Ishak
- Bristol
Dental School Research Laboratories, Dorothy Hodgkin Building, University of Bristol, Bristol BS1 3NY, United Kingdom
| | - Penelope M. Tsimbouri
- Centre
for the Cellular Microenvironment, School of Molecular Biosciences,
College of Medical, Veterinary and Life Sciences, Mazumdar-Shaw Advanced
Research Centre, University of Glasgow, Glasgow G11 6EW, United Kingdom
| | - Vineetha Jayawarna
- Centre
for the Cellular Microenvironment, School of Molecular Biosciences,
College of Medical, Veterinary and Life Sciences, Mazumdar-Shaw Advanced
Research Centre, University of Glasgow, Glasgow G11 6EW, United Kingdom
| | - Karl V. E. Burgess
- EdinOmics, University
of Edinburgh, Max Born Crescent, Edinburgh EH9 3BF, United Kingdom
| | - Gordon Ramage
- Safeguarding
Health through Infection Prevention (SHIP) Research Group, Research
Centre for Health, Glasgow Caledonian University, Glasgow G4 0BA, United Kingdom
| | - Angela H. Nobbs
- Bristol
Dental School Research Laboratories, Dorothy Hodgkin Building, University of Bristol, Bristol BS1 3NY, United Kingdom
| | - Laila Damiati
- Department
of Biological Sciences, College of Science, University of Jeddah, Jeddah 23218, Saudi Arabia
| | - Manuel Salmeron-Sanchez
- Centre
for the Cellular Microenvironment, School of Molecular Biosciences,
College of Medical, Veterinary and Life Sciences, Mazumdar-Shaw Advanced
Research Centre, University of Glasgow, Glasgow G11 6EW, United Kingdom
| | - Bo Su
- Bristol
Dental School Research Laboratories, Dorothy Hodgkin Building, University of Bristol, Bristol BS1 3NY, United Kingdom
| | - Matthew J. Dalby
- Centre
for the Cellular Microenvironment, School of Molecular Biosciences,
College of Medical, Veterinary and Life Sciences, Mazumdar-Shaw Advanced
Research Centre, University of Glasgow, Glasgow G11 6EW, United Kingdom
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2
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Liu X, Ishak MI, Ma H, Su B, Nobbs AH. Bacterial Surface Appendages Modulate the Antimicrobial Activity Induced by Nanoflake Surfaces on Titanium. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310149. [PMID: 38233200 PMCID: PMC7616388 DOI: 10.1002/smll.202310149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 01/06/2024] [Indexed: 01/19/2024]
Abstract
Bioinspired nanotopography is a promising approach to generate antimicrobial surfaces to combat implant-associated infection. Despite efforts to develop bactericidal 1D structures, the antibacterial capacity of 2D structures and their mechanism of action remains uncertain. Here, hydrothermal synthesis is utilized to generate two 2D nanoflake surfaces on titanium (Ti) substrates and investigate the physiological effects of nanoflakes on bacteria. The nanoflakes impair the attachment and growth of Escherichia coli and trigger the accumulation of intracellular reactive oxygen species (ROS), potentially contributing to the killing of adherent bacteria. E. coli surface appendages type-1 fimbriae and flagella are not implicated in the nanoflake-mediated modulation of bacterial attachment but do influence the bactericidal effects of nanoflakes. An E. coli ΔfimA mutant lacking type-1 fimbriae is more susceptible to the bactericidal effects of nanoflakes than the parent strain, while E. coli cells lacking flagella (ΔfliC) are more resistant. The results suggest that type-1 fimbriae confer a cushioning effect that protects bacteria upon initial contact with the nanoflake surface, while flagella-mediated motility can lead to elevated membrane abrasion. This finding offers a better understanding of the antibacterial properties of nanoflake structures that can be applied to the design of antimicrobial surfaces for future medical applications.
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Affiliation(s)
- Xiayi Liu
- Bristol Dental School Research Laboratories, University of Bristol, Dorothy Hodgkin Building, Whitson Street, Bristol, BS1, 3NY, UK
| | - Mohd I Ishak
- Bristol Dental School Research Laboratories, University of Bristol, Dorothy Hodgkin Building, Whitson Street, Bristol, BS1, 3NY, UK
| | - Huan Ma
- School of Chemistry, Centre for Organized Matter Chemistry and Centre for Protolife Research, University of Bristol, Bristol, BS8 1TS, UK
| | - Bo Su
- Bristol Dental School Research Laboratories, University of Bristol, Dorothy Hodgkin Building, Whitson Street, Bristol, BS1, 3NY, UK
| | - Angela H Nobbs
- Bristol Dental School Research Laboratories, University of Bristol, Dorothy Hodgkin Building, Whitson Street, Bristol, BS1, 3NY, UK
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3
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Kim S, Song Y, Kim J, Jeong B, Park N, Park YM, Kim YT, Rho D, Lee SJ, Choi BG, Im SG, Lee KG. Nanotopology-Enabled On-Site Pathogen Detection for Managing Atopic Dermatitis. Adv Healthc Mater 2024; 13:e2303272. [PMID: 38412280 DOI: 10.1002/adhm.202303272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 01/19/2024] [Indexed: 02/29/2024]
Abstract
Atopic dermatitis (AD), a prevalent skin condition often complicated by microbial infection, poses a significant challenge in identifying the responsible pathogen for its effective management. However, a reliable, safe tool for pinpointing the source of these infections remains elusive. In this study, a novel on-site pathogen detection that combines chemically functionalized nanotopology with genetic analysis is proposed to capture and analyze pathogens closely associated with severe atopic dermatitis. The chemically functionalized nanotopology features a 3D hierarchical nanopillar array (HNA) with a functional polymer coating, tailored to isolate target pathogens from infected skin. This innovative nanotopology demonstrates superior pathogenic capture efficiency, favorable entrapment patterns, and non-cytotoxicity. An HNA-assembled stick is utilized to directly retrieve bacteria from infected skin samples, followed by extraction-free quantitative loop-mediated isothermal amplification (direct qLAMP) for validation. To mimic human skin conditions, porcine skin is employed to successfully capture Staphylococcus aureus, a common bacterium exacerbating AD cases. The on-site detection method exhibits an impressive detection limit of 103 cells mL-1. The HNA-assembled stick represents a promising tool for on-site detection of bacteria associated with atopic dermatitis. This innovative approach enables to deepen the understanding of AD pathogenesis and open avenues for more effective management strategies for chronic skin conditions.
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Affiliation(s)
- Seongeun Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Younseong Song
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Jueun Kim
- Department of Chemical Engineering, Kangwon National University, Samcheok, 25913, Republic of Korea
| | - Booseok Jeong
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Nahyun Park
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Yoo Min Park
- Center for NanoBio Development, National NanoFab Center, Daejeon, 34141, Republic of Korea
| | - Yong Tae Kim
- Department of Chemical Engineering & Biotechnology, Tech University of Korea, Siheung-si, 15073, Republic of Korea
| | - Donggee Rho
- Center for NanoBio Development, National NanoFab Center, Daejeon, 34141, Republic of Korea
| | - Seok Jae Lee
- Center for NanoBio Development, National NanoFab Center, Daejeon, 34141, Republic of Korea
| | - Bong Gill Choi
- Department of Chemical Engineering, Kangwon National University, Samcheok, 25913, Republic of Korea
| | - Sung Gap Im
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Kyoung G Lee
- Center for NanoBio Development, National NanoFab Center, Daejeon, 34141, Republic of Korea
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4
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Ishak MI, Delint RC, Liu X, Xu W, Tsimbouri PM, Nobbs AH, Dalby MJ, Su B. Nanotextured titanium inhibits bacterial activity and supports cell growth on 2D and 3D substrate: A co-culture study. BIOMATERIALS ADVANCES 2024; 158:213766. [PMID: 38232578 DOI: 10.1016/j.bioadv.2024.213766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 12/14/2023] [Accepted: 01/08/2024] [Indexed: 01/19/2024]
Abstract
Medical implant-associated infections pose a significant challenge to modern medicine, with aseptic loosening and bacterial infiltration being the primary causes of implant failure. While nanostructured surfaces have demonstrated promising antibacterial properties, the translation of their efficacy from 2D to 3D substrates remains a challenge. Here, we used scalable alkaline etching to fabricate nanospike and nanonetwork topologies on 2D and laser powder-bed fusion printed 3D titanium. The fabricated surfaces were compared with regard to their antibacterial properties against Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa, and mesenchymal stromal cell responses with and without the presence of bacteria. Finite elemental analysis assessed the mechanical properties and permeability of the 3D substrate. Our findings suggest that 3D nanostructured surfaces have potential to both prevent implant infections and allow host cell integration. This work represents a significant step towards developing effective and scalable fabrication methods on 3D substrates with consistent and reproducible antibacterial activity, with important implications for the future of medical implant technology.
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Affiliation(s)
- Mohd I Ishak
- Bristol Dental School, University of Bristol, Lower Maudlin Street, Bristol BS1 2LY, UK; School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Rosalia Cuahtecontzi Delint
- Centre for the Cellular Microenvironment, School of Biomedical Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Xiayi Liu
- Bristol Dental School, University of Bristol, Lower Maudlin Street, Bristol BS1 2LY, UK
| | - Wei Xu
- National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing, Institute of Engineering Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Penelope M Tsimbouri
- Centre for the Cellular Microenvironment, School of Biomedical Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Angela H Nobbs
- Bristol Dental School, University of Bristol, Lower Maudlin Street, Bristol BS1 2LY, UK
| | - Matthew J Dalby
- Centre for the Cellular Microenvironment, School of Biomedical Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Bo Su
- Bristol Dental School, University of Bristol, Lower Maudlin Street, Bristol BS1 2LY, UK.
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5
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Valiei A, Bryche JF, Canva M, Charette PG, Moraes C, Hill RJ, Tufenkji N. Effects of Surface Topography and Cellular Biomechanics on Nanopillar-Induced Bactericidal Activity. ACS APPLIED MATERIALS & INTERFACES 2024; 16:9614-9625. [PMID: 38378485 DOI: 10.1021/acsami.3c09552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
Bacteria are mechanically resistant biological structures that can sustain physical stress. Experimental data, however, have shown that high-aspect-ratio nanopillars deform bacterial cells upon contact. If the deformation is sufficiently large, it lyses the bacterial cell wall, ultimately leading to cell death. This has prompted a novel strategy, known as mechano-bactericide technology, to fabricate antibacterial surfaces. Although adhesion forces were originally proposed as the driving force for mechano-bactericidal action, it has been recently shown that external forces, such as capillary forces arising from an air-water interface at bacterial surfaces, produce sufficient loads to rapidly kill bacteria on nanopillars. This discovery highlights the need to theoretically examine how bacteria respond to external loads and to ascertain the key factors. In this study, we developed a finite element model approximating bacteria as elastic shells filled with cytoplasmic fluid brought into contact with an individual nanopillar or nanopillar array. This model elucidates that bacterial killing caused by external forces on nanopillars is influenced by surface topography and cell biomechanical variables, including the density and arrangement of nanopillars, in addition to the cell wall thickness and elastic modulus. Considering that surface topography is an important design parameter, we performed experiments using nanopillar arrays with precisely controlled nanopillar diameters and spacing. Consistent with model predictions, these demonstrate that nanopillars with a larger spacing increase bacterial susceptibility to mechanical puncture. The results provide salient insights into mechano-bactericidal activity and identify key design parameters for implementing this technology.
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Affiliation(s)
- Amin Valiei
- Department of Chemical Engineering, McGill University, Montreal, Québec H3A 0C5, Canada
| | - Jean-François Bryche
- Laboratoire Nanotechnologies Nanosystèmes (LN2)-IRL3463, CNRS, Université de Sherbrooke, Universitè Grenoble Alpes, École Centrale de Lyon, INSA Lyon, Sherbrooke, Québec J1K 0A5, Canada
- Institut Interdisciplinaire d'Innovation Technologique (3IT), Université de Sherbrooke, 3000 Boulevard de l'Université, Sherbrooke, Québec J1K OA5, Canada
| | - Michael Canva
- Laboratoire Nanotechnologies Nanosystèmes (LN2)-IRL3463, CNRS, Université de Sherbrooke, Universitè Grenoble Alpes, École Centrale de Lyon, INSA Lyon, Sherbrooke, Québec J1K 0A5, Canada
- Institut Interdisciplinaire d'Innovation Technologique (3IT), Université de Sherbrooke, 3000 Boulevard de l'Université, Sherbrooke, Québec J1K OA5, Canada
| | - Paul G Charette
- Laboratoire Nanotechnologies Nanosystèmes (LN2)-IRL3463, CNRS, Université de Sherbrooke, Universitè Grenoble Alpes, École Centrale de Lyon, INSA Lyon, Sherbrooke, Québec J1K 0A5, Canada
- Institut Interdisciplinaire d'Innovation Technologique (3IT), Université de Sherbrooke, 3000 Boulevard de l'Université, Sherbrooke, Québec J1K OA5, Canada
| | - Christopher Moraes
- Department of Chemical Engineering, McGill University, Montreal, Québec H3A 0C5, Canada
- Department of Biomedical Engineering, McGill University, Montreal, Québec H3A 0C5, Canada
- Goodman Cancer Research Center, McGill University, Montreal, Québec H3A 0G4, Canada
| | - Reghan J Hill
- Department of Chemical Engineering, McGill University, Montreal, Québec H3A 0C5, Canada
| | - Nathalie Tufenkji
- Department of Chemical Engineering, McGill University, Montreal, Québec H3A 0C5, Canada
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6
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Siddiquie RY, Sharma K, Banerjee A, Agrawal A, Joshi SS. Time-dependent plastic behavior of bacteria leading to rupture. J Mech Behav Biomed Mater 2023; 145:106048. [PMID: 37523842 DOI: 10.1016/j.jmbbm.2023.106048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 08/02/2023]
Abstract
A study of the mechanical response of bacteria is essential in designing an antibacterial surface for implants and food packaging applications. This research evaluated the mechanical response of Escherichia coli under different loading conditions. Indentation and prolonged creep tests were performed to understand their viscoelastic-plastic response. The results indicate that varying loading rates from 1 μm/s to 5 μm/s show an increase in modulus of 182% and 90%, calculated in the loading and unloading cycles, respectively, and a decrease in adhesion force by 42%. However, on varying loads from 5 nN to 25 nN, nominal change is observed in both modulus and adhesion force. The rupture curve at 100 nN load shows elastic and a small plastic deformation accompanied by a sharp peak indicating the cell wall rupture. The rupture force at the peak was found to be 34.38 ± 5.15 nN, irrespective of the loading rate, making it a failure criterion for bacteria rupture. The creep response of bacteria increases (for 6 s) and then remains constant (for 15 s) with time, indicating that a standard linear solid (SLS) model applies to this behavior. This work attempts to evaluate the mechanical properties of E. coli bacteria focusing on its rupture by contact killing mechanism.
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Affiliation(s)
- Reshma Y Siddiquie
- Department of Mechanical Engineering, Indian Institute of Technology, Bombay, India
| | - Kuldeep Sharma
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Bombay, India
| | - Anirban Banerjee
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Bombay, India
| | - Amit Agrawal
- Department of Mechanical Engineering, Indian Institute of Technology, Bombay, India
| | - Suhas S Joshi
- Department of Mechanical Engineering, Indian Institute of Technology, Bombay, India; Department of Mechanical Engineering, Indian Institute of Technology, Indore, India.
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7
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Agarwal A, Senevirathna HL, Koo SH, Wong CSL, Lim TSK, Ng FC, Anariba F, Wu P. Bioinspired bi-phasic 3D nanoflowers of MgO/Mg(OH) 2 coated melamine sponge as a novel bactericidal agent. Sci Rep 2023; 13:13290. [PMID: 37587205 PMCID: PMC10432489 DOI: 10.1038/s41598-023-40336-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 08/09/2023] [Indexed: 08/18/2023] Open
Abstract
By roughly mimicking the surface architectural design of dragonfly wings, novel bi-phasic 3D nanoflowers of MgO/Mg(OH)2 were successfully synthesized via the electrospinning technique. The 3D nanoflowers were coated over a commercial melamine sponge and extensively characterized by SEM, XRD, FTIR, and EDS. The formation of distinct dense 3D nano petals was revealed by SEM images whereby the mean petal thickness and mean distance between the adjacent petals were found to be 36 nm and 121 nm, respectively. The bactericidal activities of synthesized 3D nano-flowers coated melamine sponges were assessed against five different bacteria (Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa). This study demonstrated significant bactericidal activity of MgO/Mg(OH)2 3D nanoflowers coated MS against Gram-positive and Gram-negative bacteria. Plausible bactericidal mechanisms include envelope deformation, penetration, and induction of oxidative stress. This study introduces novel bioinspired biomaterial with the capacity to reduce the risk associated with pathogenic bacterial infections, especially in medical devices.
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Affiliation(s)
- Ashutosh Agarwal
- Entropic Interface Group, Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Singapore
| | - Hasanthi L Senevirathna
- Entropic Interface Group, Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Singapore
| | - Seok Hwee Koo
- Clinical Trials and Research Unit, Changi General Hospital, 2 Simei Street 3, Singapore, 529889, Singapore
| | - Crystal Shie Lyeen Wong
- Department of Laboratory Medicine, Changi General Hospital, 2 Simei Street 3, Singapore, 529889, Singapore
| | - Terence Sey Kiat Lim
- Department of Urology, Changi General Hospital, 2 Simei Street 3, Singapore, 529889, Singapore
| | - Foo Cheong Ng
- Department of Urology, Changi General Hospital, 2 Simei Street 3, Singapore, 529889, Singapore
| | - Franklin Anariba
- Entropic Interface Group, Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Singapore
- Anariba Brands Group, Science, Mathematics and Technology, Affiliated to Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Singapore
| | - Ping Wu
- Entropic Interface Group, Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Singapore.
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8
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Song Y, Park N, Jo DA, Kim J, Yong D, Song J, Park YM, Lee SJ, Kim YT, Im SG, Choi BG, Kang T, Lee KG. Polyaniline-based 3D network structure promotes entrapment and detection of drug-resistant bacteria. NANO CONVERGENCE 2023; 10:25. [PMID: 37243716 PMCID: PMC10224663 DOI: 10.1186/s40580-023-00370-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 05/07/2023] [Indexed: 05/29/2023]
Abstract
Sensitive and accurate capture, enrichment, and identification of drug-resistant bacteria on human skin are important for early-stage diagnosis and treatment of patients. Herein, we constructed a three-dimensional hierarchically structured polyaniline nanoweb (3D HPN) to capture, enrich, and detect drug-resistant bacteria on-site by rubbing infected skins. These unique hierarchical nanostructures enhance bacteria capture efficiency and help severely deform the surface of the bacteria entrapped on them. Therefore, 3D HPN significantly contributes to the effective and reliable recovery of drug-resistant bacteria from the infected skin and the prevention of potential secondary infection. The recovered bacteria were successfully identified by subsequent real-time polymerase chain reaction (PCR) analysis after the lysis process. The molecular analysis results based on a real-time PCR exhibit excellent sensitivity to detecting target bacteria of concentrations ranging from 102 to 107 CFU/mL without any fluorescent signal interruption. To confirm the field applicability of 3D HPN, it was tested with a drug-resistant model consisting of micropig skin similar to human skin and Klebsiella pneumoniae carbapenemase-producing carbapenem-resistant Enterobacteriaceae (KPC-CRE). The results show that the detection sensitivity of this assay is 102 CFU/mL. Therefore, 3D HPN can be extended to on-site pathogen detection systems, along with rapid molecular diagnostics through a simple method, to recover KPC-CRE from the skin.
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Affiliation(s)
- Younseong Song
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Nahyun Park
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Da Ae Jo
- Center for Nano Bio Development, National Nanofab Center (NNFC), Daejeon, 34141, Republic of Korea
| | - Jueun Kim
- Center for Nano Bio Development, National Nanofab Center (NNFC), Daejeon, 34141, Republic of Korea
| | - Dongeun Yong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Jayeon Song
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, 02114, USA
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
| | - Yoo Min Park
- Center for Nano Bio Development, National Nanofab Center (NNFC), Daejeon, 34141, Republic of Korea
| | - Seok Jae Lee
- Center for Nano Bio Development, National Nanofab Center (NNFC), Daejeon, 34141, Republic of Korea
| | - Yong Tae Kim
- Department of Chemical Engineering & Biotechnology, Tech University of Korea, Siheung-Si, 15073, Republic of Korea
| | - Sung Gap Im
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Bong Gill Choi
- Department of Chemical Engineering, Kangwon National University, Samcheok, 25913, Republic of Korea.
| | - Taejoon Kang
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea.
- School of Pharmacy, Sungkyunkwan University (SKKU), Suwon-Si, 16419, Republic of Korea.
| | - Kyoung G Lee
- Center for Nano Bio Development, National Nanofab Center (NNFC), Daejeon, 34141, Republic of Korea.
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9
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Zhang Y, Cui J, Chen KY, Kuo SH, Sharma J, Bhatta R, Liu Z, Ellis-Mohr A, An F, Li J, Chen Q, Foss KD, Wang H, Li Y, McCoy AM, Lau GW, Cao Q. A smart coating with integrated physical antimicrobial and strain-mapping functionalities for orthopedic implants. SCIENCE ADVANCES 2023; 9:eadg7397. [PMID: 37146142 PMCID: PMC10162669 DOI: 10.1126/sciadv.adg7397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 04/04/2023] [Indexed: 05/07/2023]
Abstract
The prevalence of orthopedic implants is increasing with an aging population. These patients are vulnerable to risks from periprosthetic infections and instrument failures. Here, we present a dual-functional smart polymer foil coating compatible with commercial orthopedic implants to address both septic and aseptic failures. Its outer surface features optimum bioinspired mechano-bactericidal nanostructures, capable of killing a wide spectrum of attached pathogens through a physical process to reduce the risk of bacterial infection, without directly releasing any chemicals or harming mammalian cells. On its inner surface in contact with the implant, an array of strain gauges with multiplexing transistors, built on single-crystalline silicon nanomembranes, is incorporated to map the strain experienced by the implant with high sensitivity and spatial resolution, providing information about bone-implant biomechanics for early diagnosis to minimize the probability of catastrophic instrument failures. Their multimodal functionalities, performance, biocompatibility, and stability are authenticated in sheep posterolateral fusion model and rodent implant infection model.
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Affiliation(s)
- Yi Zhang
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Jinsong Cui
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Kuan-Yu Chen
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Shanny Hsuan Kuo
- Department of Pathobiology, University of Illinois Urbana-Champaign, Urbana, IL 61802, USA
| | - Jaishree Sharma
- Department of Pathobiology, University of Illinois Urbana-Champaign, Urbana, IL 61802, USA
| | - Rimsha Bhatta
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Zheng Liu
- Department of Industrial and Enterprise Systems Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Austin Ellis-Mohr
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Fufei An
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Jiahui Li
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Qian Chen
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Kari D. Foss
- Department of Veterinary Clinical Medicine, University of Illinois Urbana-Champaign. Urbana, IL 61802, USA
- Veterinary Teaching Hospital, University of Illinois Urbana-Champaign, Urbana, IL 61802, USA
| | - Hua Wang
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Yumeng Li
- Department of Industrial and Enterprise Systems Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Annette M. McCoy
- Department of Veterinary Clinical Medicine, University of Illinois Urbana-Champaign. Urbana, IL 61802, USA
- Veterinary Teaching Hospital, University of Illinois Urbana-Champaign, Urbana, IL 61802, USA
| | - Gee W. Lau
- Department of Pathobiology, University of Illinois Urbana-Champaign, Urbana, IL 61802, USA
| | - Qing Cao
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
- Department of Electrical and Computer Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
- Frederick Seitz Materials Research Laboratory, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
- Holonyak Micro and Nanotechnology Laboratory, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
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10
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Schifano E, Cavoto G, Pandolfi F, Pettinari G, Apponi A, Ruocco A, Uccelletti D, Rago I. Plasma-Etched Vertically Aligned CNTs with Enhanced Antibacterial Power. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1081. [PMID: 36985974 PMCID: PMC10054568 DOI: 10.3390/nano13061081] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/01/2023] [Accepted: 03/14/2023] [Indexed: 06/18/2023]
Abstract
The emergence of multidrug-resistant bacteria represents a growing threat to public health, and it calls for the development of alternative antibacterial approaches not based on antibiotics. Here, we propose vertically aligned carbon nanotubes (VA-CNTs), with a properly designed nanomorphology, as effective platforms to kill bacteria. We show, via a combination of microscopic and spectroscopic techniques, the ability to tailor the topography of VA-CNTs, in a controlled and time-efficient manner, by means of plasma etching processes. Three different varieties of VA-CNTs were investigated, in terms of antibacterial and antibiofilm activity, against Pseudomonas aeruginosa and Staphylococcus aureus: one as-grown variety and two varieties receiving different etching treatments. The highest reduction in cell viability (100% and 97% for P. aeruginosa and S. aureus, respectively) was observed for the VA-CNTs modified using Ar and O2 as an etching gas, thus identifying the best configuration for a VA-CNT-based surface to inactivate both planktonic and biofilm infections. Additionally, we demonstrate that the powerful antibacterial activity of VA-CNTs is determined by a synergistic effect of both mechanical injuries and ROS production. The possibility of achieving a bacterial inactivation close to 100%, by modulating the physico-chemical features of VA-CNTs, opens up new opportunities for the design of self-cleaning surfaces, preventing the formation of microbial colonies.
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Affiliation(s)
- Emily Schifano
- Dipartimento di Biologia e Biotecnologia “C. Darwin”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
- SNN Lab, Sapienza Nanotechnology & Nano-Science Laboratory, Sapienza University of Rome, 00100 Rome, Italy
| | - Gianluca Cavoto
- Dipartimento di Fisica, Sapienza University of Rome, Piazzale Aldo Moro 2, 00185 Rome, Italy
- INFN Sezione di Roma, Piazzale Aldo Moro 2, 00185 Rome, Italy
| | | | - Giorgio Pettinari
- Istituto di Fotonica e Nanotecnologie, CNR-IFN, Via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - Alice Apponi
- Dipartimento di Scienze, Università Degli Studi Roma Tre and INFN Sezione di Roma Tre, Via della Vasca Navale 84, 00146 Rome, Italy
| | - Alessandro Ruocco
- Dipartimento di Scienze, Università Degli Studi Roma Tre and INFN Sezione di Roma Tre, Via della Vasca Navale 84, 00146 Rome, Italy
| | - Daniela Uccelletti
- Dipartimento di Biologia e Biotecnologia “C. Darwin”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
- SNN Lab, Sapienza Nanotechnology & Nano-Science Laboratory, Sapienza University of Rome, 00100 Rome, Italy
| | - Ilaria Rago
- Dipartimento di Fisica, Sapienza University of Rome, Piazzale Aldo Moro 2, 00185 Rome, Italy
- INFN Sezione di Roma, Piazzale Aldo Moro 2, 00185 Rome, Italy
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11
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Ishak MI, Eales M, Damiati L, Liu X, Jenkins J, Dalby MJ, Nobbs AH, Ryadnov MG, Su B. Enhanced and Stem-Cell-Compatible Effects of Nature-Inspired Antimicrobial Nanotopography and Antimicrobial Peptides to Combat Implant-Associated Infection. ACS APPLIED NANO MATERIALS 2023; 6:2549-2559. [PMID: 36875180 PMCID: PMC9972347 DOI: 10.1021/acsanm.2c04913] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
Nature-inspired antimicrobial surfaces and antimicrobial peptides (AMPs) have emerged as promising strategies to combat implant-associated infections. In this study, a bioinspired antimicrobial peptide was functionalized onto a nanospike (NS) surface by physical adsorption with the aim that its gradual release into the local environment would enhance inhibition of bacterial growth. Peptide adsorbed on a control flat surface exhibited different release kinetics compared to the nanotopography, but both surfaces showed excellent antibacterial properties. Functionalization with peptide at micromolar concentrations inhibited Escherichia coli growth on the flat surface, Staphylococcus aureus growth on the NS surface, and Staphylococcus epidermidis growth on both the flat and NS surfaces. Based on these data, we propose an enhanced antibacterial mechanism whereby AMPs can render bacterial cell membranes more susceptible to nanospikes, and the membrane deformation induced by nanospikes can increase the surface area for AMPs membrane insertion. Combined, these effects enhance bactericidal activity. Since functionalized nanostructures are highly biocompatible with stem cells, they make promising candidates for next generation antibacterial implant surfaces.
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Affiliation(s)
- Mohd Irill Ishak
- Bristol
Dental School, University of Bristol, Bristol BS1 2LY, U.K.
| | - Marcus Eales
- Bristol
Dental School, University of Bristol, Bristol BS1 2LY, U.K.
- National
Physical Laboratory, Teddington TW11 0LW, U.K.
| | - Laila Damiati
- Department
of Biology, College of Science, University
of Jeddah, Jeddah 23218, Saudi Arabia
| | - Xiayi Liu
- Bristol
Dental School, University of Bristol, Bristol BS1 2LY, U.K.
| | - Joshua Jenkins
- Bristol
Dental School, University of Bristol, Bristol BS1 2LY, U.K.
| | - Matthew J. Dalby
- Centre
for the Cellular Microenvironment, University
of Glasgow, Glasgow G11 6EW, Scotland
| | - Angela H. Nobbs
- Bristol
Dental School, University of Bristol, Bristol BS1 2LY, U.K.
| | | | - Bo Su
- Bristol
Dental School, University of Bristol, Bristol BS1 2LY, U.K.
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12
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Influence of electrode surface charge on current production by Geobacter sulfurreducens microbial anodes. Bioelectrochemistry 2022; 147:108213. [DOI: 10.1016/j.bioelechem.2022.108213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 07/05/2022] [Accepted: 07/15/2022] [Indexed: 12/25/2022]
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