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Shao N, Huang S, Huang Y, Pan M, Xie Y, Chen Q, Chen C, Pan J, Zhou Y. Smart Enzyme-Like Polyphenol-Copper Spray for Enhanced Bacteria-Infected Diabetic Wound Healing. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2308295. [PMID: 38100287 DOI: 10.1002/smll.202308295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/22/2023] [Indexed: 12/17/2023]
Abstract
Developing functional medical materials is urgent to treat diabetic wounds with a high risk of bacterial infections, high glucose levels and oxidative stress. Here, a smart copper-based nanocomposite acidic spray has been specifically designed to address this challenge. This copper-based nanocomposite is pH-responsive and has multienzyme-like properties. It enables the spray to effectively eliminate bacteria and alleviate tissue oxidative pressure, thereby accelerating the healing of infected diabetic wounds. The spray works by generating hydroxyl radicals through catalysing H2O2, which has a high sterilization efficiency of 97.1%. As alkaline micro-vessel leakage neutralizes the acidic spray, this copper-based nanocomposite modifies its enzyme-like activity to eliminate radicals. This reduces the level of reactive oxygen species in diabetic wounds by 45.3%, leading to a similar wound-healing effect between M1 diabetic mice and non-diabetic ones by day 8. This smart nanocomposite spray provides a responsive and regulated microenvironment for treating infected diabetic wounds. It also offers a convenient and novel approach to address the challenges associated with diabetic wound healing.
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Affiliation(s)
- Nannan Shao
- Joint Center of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, P. R. China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325001, P. R. China
| | - Siyan Huang
- Joint Center of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, P. R. China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325001, P. R. China
| | - Yueyue Huang
- Department of Intensive Care Unit, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, P. R. China
- Key Laboratory of Intelligent Treatment and Life Support for Critical Diseases of Zhejiang Province, Wenzhou, Zhejiang, 325000, P. R. China
- Wenzhou Key Laboratory of Critical Care and Artificial Intelligence, Wenzhou, Zhejiang, 325000, P. R. China
- Zhejiang Engineering Research Center for Hospital Emergency and Process Digitization, Wenzhou, Zhejiang, 325000, P. R. China
| | - Mengmeng Pan
- Joint Center of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, P. R. China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325001, P. R. China
| | - Yuyu Xie
- Joint Center of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, P. R. China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325001, P. R. China
| | - Qizhu Chen
- Department of Orthopaedics, Key Laboratory of Structural Malformations in Children of Zhejiang Province Key Laboratory of Orthopaedics of Zhejiang Province, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, P. R. China
| | - Chunxiu Chen
- Joint Center of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, P. R. China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325001, P. R. China
| | - Jingye Pan
- Joint Center of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, P. R. China
- Department of Intensive Care Unit, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, P. R. China
- Key Laboratory of Intelligent Treatment and Life Support for Critical Diseases of Zhejiang Province, Wenzhou, Zhejiang, 325000, P. R. China
- Wenzhou Key Laboratory of Critical Care and Artificial Intelligence, Wenzhou, Zhejiang, 325000, P. R. China
- Zhejiang Engineering Research Center for Hospital Emergency and Process Digitization, Wenzhou, Zhejiang, 325000, P. R. China
| | - Yunlong Zhou
- Joint Center of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, P. R. China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325001, P. R. China
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Rawat N, Ahmad N, Raturi P, Singhvi N, Sahai N, Kothiyal P. Nanobiomaterials: exploring mechanistic roles in combating microbial infections and cancer. DISCOVER NANO 2023; 18:158. [PMID: 38123864 PMCID: PMC10733259 DOI: 10.1186/s11671-023-03946-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 12/16/2023] [Indexed: 12/23/2023]
Abstract
The initiation of the "nanotechnology era" within the past decade has been prominently marked by advancements in biomaterials. This intersection has opened up numerous possibilities for enhancing the detection, diagnosis, and treatment of various illnesses by leveraging the synergy between biomaterials and nanotechnology. The term "nano biomaterials" referring to biomaterials featuring constituent or surface feature sizes below 100 nm, presents a realm of extraordinary materials endowed with unique structures and properties. Beyond addressing common biomedical challenges, these nano biomaterials contribute unprecedented insights and principles that enrich our understanding of biology, medicine, and materials science. A critical evaluation of recent technological progress in employing biomaterials in medicine is essential, along with an exploration of potential future trends. Nanotechnology breakthroughs have yielded novel surfaces, materials, and configurations with notable applications in the biomedical domain. The integration of nanotechnology has already begun to enhance traditional biomedical practices across diverse fields such as tissue engineering, intelligent systems, the utilization of nanocomposites in implant design, controlled release systems, biosensors, and more. This mini review encapsulates insights into biomaterials, encompassing their types, synthesis methods, and the roles of organic and inorganic nanoparticles, elucidating their mechanisms of action. Furthermore, the focus is squarely placed on nano biomaterials and their versatile applications, with a particular emphasis on their roles in anticancer and antimicrobial interventions. This review underscores the dynamic landscape of nanotechnology, envisioning a future where nano biomaterials play a pivotal role in advancing medical applications, particularly in combating cancer and microbial infections.
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Affiliation(s)
- Neha Rawat
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, 248007, India
| | - Nabeel Ahmad
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, 248007, India.
| | - Pratishtha Raturi
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, 248007, India
| | - Nirjara Singhvi
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, 248007, India
| | - Nitin Sahai
- 3D Printing and Visualization Center, University of Pecs, Boszorkany str. 2, Pecs, Hungary
- Departmnet of Biomedical Engineering, North Eastern Hill University (Central University), Shillong, India
| | - Preeti Kothiyal
- School of Pharmacy and Research, Dev Bhoomi Uttarakhand University, Dehradun, 248007, India
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3
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Jiang Z, Fu L, Wei C, Fu Q, Pan S. Antibacterial micro/nanomotors: advancing biofilm research to support medical applications. J Nanobiotechnology 2023; 21:388. [PMID: 37875896 PMCID: PMC10599038 DOI: 10.1186/s12951-023-02162-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 10/13/2023] [Indexed: 10/26/2023] Open
Abstract
Multi-drug resistant (MDR) bacterial infections are gradually increasing in the global scope, causing a serious burden to patients and society. The formation of bacterial biofilms, which is one of the key reasons for antibiotic resistance, blocks antibiotic penetration by forming a physical barrier. Nano/micro motors (MNMs) are micro-/nanoscale devices capable of performing complex tasks in the bacterial microenvironment by transforming various energy sources (including chemical fuels or external physical fields) into mechanical motion or actuation. This autonomous movement provides significant advantages in breaking through biological barriers and accelerating drug diffusion. In recent years, MNMs with high penetrating power have been used as carriers of antibiotics to overcome bacterial biofilms, enabling efficient drug delivery and improving the therapeutic effectiveness of MDR bacterial infections. Additionally, non-antibiotic antibacterial strategies based on nanomaterials, such as photothermal therapy and photodynamic therapy, are continuously being developed due to their non-invasive nature, high effectiveness, and non-induction of resistance. Therefore, multifunctional MNMs have broad prospects in the treatment of MDR bacterial infections. This review discusses the performance of MNMs in the breakthrough and elimination of bacterial biofilms, as well as their application in the field of anti-infection. Finally, the challenges and future development directions of antibacterial MNMs are introduced.
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Affiliation(s)
- Zeyu Jiang
- Department of Emergency Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266003, China
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, 266021, China
| | - Lejun Fu
- School of Chemistry and Materials Science, Anhui Normal University, Wuhu, 230022, China
| | - Chuang Wei
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, 266021, China
| | - Qinrui Fu
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, 266021, China.
| | - Shuhan Pan
- Department of Emergency Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266003, China.
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4
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Dib-Zaitum I, Guadilla-González Y, Flores-Fraile J, Dib-Zakkour J, Benito-Garzón L, Montero J. Effect Morphology and Surface Treatment of the Abutments of Dental Implants on the Dimension and Health of Peri-Implant Biological Space. MATERIALS 2022; 15:ma15134422. [PMID: 35806548 PMCID: PMC9267537 DOI: 10.3390/ma15134422] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 06/15/2022] [Accepted: 06/16/2022] [Indexed: 12/10/2022]
Abstract
Statement of the problem: The gingival configuration around implant abutments is of paramount importance for preserving the underlying marginal bone, and hence for the long-term success of dental implants. Objective: The objective was to study, clinically and histologically, the effects of the change in the morphology of abutments connected to the endosseous implant, and of their surface treatment. In particular, the objective was to ascertain the effect of changing the shape of the transepithelial pillar and the treatment of its surface on the dimensions, quality and health of the components of the peri-implant biological space, such as the dimensions of the epithelial and connective tissues of the biological space, the concentration of inflammatory cells and the density of collagen fibers. Methods: A clinical trial of 10 patients with a totally edentulous maxilla, who had four implants (IPX4010_GALIMPLANT®, Sarria, Spain) inserted in the area of the first and second molars on both sides with computer-guided implant surgery, was conducted with the final purpose of assessing the quality of the peri-implant soft tissue attachment around the transepithelial abutments which were employed (aesthetic machined (RM), aesthetic anodized (RA), slim machined (SM) and slim anodized (SA)). At 8 weeks and following the collection of the samples (removal of the implant-abutment assembly with its surrounding hard and soft tissue) and their processing for subsequent histological and histomorphometric analysis in order to study the dimensions, quality and health of the peri-implant soft tissue area, the variables previously mentioned were determined according to the aims of the study. By using appropriate diameter trephine in order to obtain a useful fringe of soft tissue around the transepithelial pillars, ANOVA and chi-square tests were performed. Results: The SPSS statistical analysis ANOVA results revealed that the machined slim abutments have a better performance considering the variables analyzed with epithelial and connective attachment heights of 1.52 mm and 2.3 mm, respectively, and that connective density (density of collagen fibers) was high at 85.7% of the sample size affected by the design for the slim abutments and 92.9% of the high-density sample size affected by the surface treatment for the machined surface. Conclusions: All variables studied, despite the small sample size, showed the superiority of the slim machined abutment among the four groups.
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Affiliation(s)
- Ibrahim Dib-Zaitum
- Department of Surgery, Faculty of Medicine, University of Salamanca, 37007 Salamanca, Spain; (I.D.-Z.); (Y.G.-G.); (J.D.-Z.); (J.M.)
| | - Yasmina Guadilla-González
- Department of Surgery, Faculty of Medicine, University of Salamanca, 37007 Salamanca, Spain; (I.D.-Z.); (Y.G.-G.); (J.D.-Z.); (J.M.)
| | - Javier Flores-Fraile
- Department of Surgery, Faculty of Medicine, University of Salamanca, 37007 Salamanca, Spain; (I.D.-Z.); (Y.G.-G.); (J.D.-Z.); (J.M.)
- Correspondence:
| | - Juan Dib-Zakkour
- Department of Surgery, Faculty of Medicine, University of Salamanca, 37007 Salamanca, Spain; (I.D.-Z.); (Y.G.-G.); (J.D.-Z.); (J.M.)
| | - Lorena Benito-Garzón
- Department of Human Anatomy and Histology, Faculty of Medicine, University of Salamanca, 37007 Salamanca, Spain;
| | - Javier Montero
- Department of Surgery, Faculty of Medicine, University of Salamanca, 37007 Salamanca, Spain; (I.D.-Z.); (Y.G.-G.); (J.D.-Z.); (J.M.)
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5
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Oliveira VDC, Souza MT, Zanotto ED, Watanabe E, Coraça-Huber D. Biofilm Formation and Expression of Virulence Genes of Microorganisms Grown in Contact with a New Bioactive Glass. Pathogens 2020; 9:E927. [PMID: 33182533 PMCID: PMC7696213 DOI: 10.3390/pathogens9110927] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/03/2020] [Accepted: 11/05/2020] [Indexed: 01/09/2023] Open
Abstract
Bioactive glass F18 (BGF18), a glass containing SiO2-Na2O-K2O-MgO-CaO-P2O5, is highly effective as an osseointegration buster agent when applied as a coating in titanium implants. Biocompatibility tests using this biomaterial exhibited positive results; however, its antimicrobial activity is still under investigation. In this study we evaluated biofilm formation and expression of virulence-factor-related genes in Candida albicans, Staphylococcus epidermidis, and Pseudomonas aeruginosa grown on surfaces of titanium and titanium coated with BGF18. C. albicans, S. epidermidis, and P. aeruginosa biofilms were grown on specimens for 8, 24, and 48 h. After each interval, the pH was measured and the colony-forming units were counted for the biofilm recovery rates. In parallel, quantitative real-time polymerase chain reactions were carried out to verify the expression of virulence-factor-related genes. Our results showed that pH changes of the culture in contact with the bioactive glass were merely observed. Reduction in biofilm formation was not observed at any of the studied time. However, changes in the expression level of genes related to virulence factors were observed after 8 and 48 h of culture in BGF18. BGF18 coating did not have a clear inhibitory effect on biofilm growth but promoted the modulation of virulence factors.
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Affiliation(s)
- Viviane de Cássia Oliveira
- Human Exposome and Infectious Diseases Network—HEID, School of Nursing of Ribeirão Preto, University of São Paulo, Bandeirantes Avenue 3900, Ribeirão Preto 14040-904, São Paulo, Brazil; (V.d.C.O.); (E.W.)
- Department of Dental Materials and Prostheses, School of Dentistry of Ribeirão Preto, University of São Paulo, Café Avenue S/N, Ribeirão Preto 14040-904, São Paulo, Brazil
| | - Marina Trevelin Souza
- Vitreous Materials Laboratory—LaMaV, Department of Materials Engineering, Federal University of São Carlos, Rod. Washington Luiz km 235, São Carlos 13565-905, São Paulo, Brazil; (M.T.S.); (E.D.Z.)
| | - Edgar Dutra Zanotto
- Vitreous Materials Laboratory—LaMaV, Department of Materials Engineering, Federal University of São Carlos, Rod. Washington Luiz km 235, São Carlos 13565-905, São Paulo, Brazil; (M.T.S.); (E.D.Z.)
| | - Evandro Watanabe
- Human Exposome and Infectious Diseases Network—HEID, School of Nursing of Ribeirão Preto, University of São Paulo, Bandeirantes Avenue 3900, Ribeirão Preto 14040-904, São Paulo, Brazil; (V.d.C.O.); (E.W.)
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Café Avenue S/N, Ribeirão Preto 14040-904, São Paulo, Brazil
| | - Débora Coraça-Huber
- Department of Orthopedic Surgery, Experimental Orthopedics, Medical University of Innsbruck, Peter‒Mayr-Strasse 4b, 6020 Innsbruck, Austria
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6
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Pham DQ, Bryant SJ, Cheeseman S, Huang LZY, Bryant G, Dupont MF, Chapman J, Berndt CC, Vongsvivut JP, Crawford RJ, Truong VK, Ang ASM, Elbourne A. Micro- to nano-scale chemical and mechanical mapping of antimicrobial-resistant fungal biofilms. NANOSCALE 2020; 12:19888-19904. [PMID: 32985644 DOI: 10.1039/d0nr05617k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A fungal biofilm refers to the agglomeration of fungal cells surrounded by a polymeric extracellular matrix (ECM). The ECM is composed primarily of polysaccharides that facilitate strong surface adhesion, proliferation, and cellular protection from the surrounding environment. Biofilms represent the majority of known microbial communities, are ubiquitous, and are found on a multitude of natural and synthetic surfaces. The compositions, and in-turn nanomechanical properties, of fungal biofilms remain poorly understood, because these systems are complex, composed of anisotropic cellular and extracellular material, and importantly are species and environment dependent. Therefore, genomic variation, and/or mutations, as well as environmental and growth factors can change the composition of a fungal cell's biofilm. In this work, we probe the physico-mechanical and biochemical properties of two fungal species, Candida albicans (C. albicans) and Cryptococcus neoformans (C. neoformans), as well as two antifungal resistant sub-species of C. neoformans, fluconazole-resistant C. neoformans (FlucRC. neoformans) and amphotericin B-resistant C. neoformans (AmBRC. neoformans). A new experimental methodology of characterization is proposed, employing a combination of atomic force microscopy (AFM), instrumented nanoindentation, and Synchrotron ATR-FTIR measurements. This allowed the nano-mechanical and chemical characterisation of each fungal biofilm.
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Affiliation(s)
- Duy Quang Pham
- Surface Engineering for Advanced Materials (SEAM), Department of Mechanical and Production Design Engineering, Swinburne University of Technology, Hawthorn, Australia.
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Antimicrobial Nanostructured Coatings: A Gas Phase Deposition and Magnetron Sputtering Perspective. MATERIALS 2020; 13:ma13030784. [PMID: 32046363 PMCID: PMC7040917 DOI: 10.3390/ma13030784] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 02/01/2020] [Accepted: 02/05/2020] [Indexed: 12/24/2022]
Abstract
Counteracting the spreading of multi-drug-resistant pathogens, taking place through surface-mediated cross-contamination, is amongst the higher priorities in public health policies. For these reason an appropriate design of antimicrobial nanostructured coatings may allow to exploit different antimicrobial mechanisms pathways, to be specifically activated by tailoring the coatings composition and morphology. Furthermore, their mechanical properties are of the utmost importance in view of the antimicrobial surface durability. Indeed, the coating properties might be tuned differently according to the specific synthesis method. The present review focuses on nanoparticle based bactericidal coatings obtained via magneton-spattering and supersonic cluster beam deposition. The bacteria–NP interaction mechanisms are first reviewed, thus making clear the requirements that a nanoparticle-based film should meet in order to serve as a bactericidal coating. Paradigmatic examples of coatings, obtained by magnetron sputtering and supersonic cluster beam deposition, are discussed. The emphasis is on widening the bactericidal spectrum so as to be effective both against gram-positive and gram-negative bacteria, while ensuring a good adhesion to a variety of substrates and mechanical durability. It is discussed how this goal may be achieved combining different elements into the coating.
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8
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Engineered delivery strategies for enhanced control of growth factor activities in wound healing. Adv Drug Deliv Rev 2019; 146:190-208. [PMID: 29879493 DOI: 10.1016/j.addr.2018.06.002] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 04/18/2018] [Accepted: 06/01/2018] [Indexed: 12/18/2022]
Abstract
Growth factors (GFs) are versatile signalling molecules that orchestrate the dynamic, multi-stage process of wound healing. Delivery of exogenous GFs to the wound milieu to mediate healing in an active, physiologically-relevant manner has shown great promise in laboratories; however, the inherent instability of GFs, accompanied with numerous safety, efficacy and cost concerns, has hindered the clinical success of GF delivery. In this article, we highlight that the key to overcoming these challenges is to enhance the control of the activities of GFs throughout the delivering process. We summarise the recent strategies based on biomaterials matrices and molecular engineering, which aim to improve the conditions of GFs for delivery (at the 'supply' end of the delivery), increase the stability and functions of GFs in extracellular matrix (in transportation to target cells), as well as enhance the GFs/receptor interaction on the cell membrane (at the 'destination' end of the delivery). Many of these investigations have led to encouraging outcomes in various in vitro and in vivo regenerative models with considerable translational potential.
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9
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Elbourne A, Chapman J, Gelmi A, Cozzolino D, Crawford RJ, Truong VK. Bacterial-nanostructure interactions: The role of cell elasticity and adhesion forces. J Colloid Interface Sci 2019; 546:192-210. [PMID: 30921674 DOI: 10.1016/j.jcis.2019.03.050] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 03/13/2019] [Accepted: 03/14/2019] [Indexed: 02/07/2023]
Abstract
The attachment of single-celled organisms, namely bacteria and fungi, to abiotic surfaces is of great interest to both the scientific and medical communities. This is because the interaction of such cells has important implications in a range of areas, including biofilm formation, biofouling, antimicrobial surface technologies, and bio-nanotechnologies, as well as infection development, control, and mitigation. While central to many biological phenomena, the factors which govern microbial surface attachment are still not fully understood. This lack of understanding is a direct consequence of the complex nature of cell-surface interactions, which can involve both specific and non-specific interactions. For applications involving micro- and nano-structured surfaces, developing an understanding of such phenomenon is further complicated by the diverse nature of surface architectures, surface chemistry, variation in cellular physiology, and the intended technological output. These factors are extremely important to understand in the emerging field of antibacterial nanostructured surfaces. The aim of this perspective is to re-frame the discussion surrounding the mechanism of nanostructured-microbial surface interactions. Broadly, the article reviews our current understanding of these phenomena, while highlighting the knowledge gaps surrounding the adhesive forces which govern bacterial-nanostructure interactions and the role of cell membrane rigidity in modulating surface activity. The roles of surface charge, cell rigidity, and cell-surface adhesion force in bacterial-surface adsorption are discussed in detail. Presently, most studies have overlooked these areas, which has left many questions unanswered. Further, this perspective article highlights the numerous experimental issues and misinterpretations which surround current studies of antibacterial nanostructured surfaces.
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Affiliation(s)
- Aaron Elbourne
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne, VIC 3001, Australia; Nanobiotechnology Laboratory, RMIT University, Melbourne, VIC 3001, Australia.
| | - James Chapman
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne, VIC 3001, Australia; Nanobiotechnology Laboratory, RMIT University, Melbourne, VIC 3001, Australia
| | - Amy Gelmi
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne, VIC 3001, Australia
| | - Daniel Cozzolino
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne, VIC 3001, Australia
| | - Russell J Crawford
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne, VIC 3001, Australia; Nanobiotechnology Laboratory, RMIT University, Melbourne, VIC 3001, Australia
| | - Vi Khanh Truong
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne, VIC 3001, Australia; Nanobiotechnology Laboratory, RMIT University, Melbourne, VIC 3001, Australia
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10
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Singh V, Kumar V, Kashyap S, Singh AV, Kishore V, Sitti M, Saxena PS, Srivastava A. Graphene Oxide Synergistically Enhances Antibiotic Efficacy in Vancomycin-Resistant Staphylococcus aureus. ACS APPLIED BIO MATERIALS 2019; 2:1148-1157. [DOI: 10.1021/acsabm.8b00757] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vimal Singh
- Department of Zoology, Banaras Hindu University, Varanasi 22005, India
| | - Vinod Kumar
- Department of Zoology, Banaras Hindu University, Varanasi 22005, India
| | - Sunayana Kashyap
- Department of Zoology, Banaras Hindu University, Varanasi 22005, India
| | - Ajay Vikram Singh
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany
| | - Vimal Kishore
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany
| | - Metin Sitti
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany
| | - Preeti S. Saxena
- Department of Zoology, Banaras Hindu University, Varanasi 22005, India
| | - Anchal Srivastava
- Department of Physics, Banaras Hindu University, Varanasi 22005, India
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11
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Benetti G, Cavaliere E, Brescia R, Salassi S, Ferrando R, Vantomme A, Pallecchi L, Pollini S, Boncompagni S, Fortuni B, Van Bael MJ, Banfi F, Gavioli L. Tailored Ag-Cu-Mg multielemental nanoparticles for wide-spectrum antibacterial coating. NANOSCALE 2019; 11:1626-1635. [PMID: 30644952 DOI: 10.1039/c8nr08375d] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Bactericidal nanoparticle coatings are very promising for hindering the indirect transmission of pathogens through cross-contaminated surfaces. The challenge, limiting their employment in nosocomial environments, is the ability of tailoring the coating's physicochemical properties, namely, composition, cytotoxicity, bactericidal spectrum, adhesion to the substrate, and consequent nanoparticles release into the environment. We have engineered a new family of nanoparticle-based bactericidal coatings comprising Ag, Cu, and Mg and synthesized by a green gas-phase technique. These coatings present wide-spectrum bactericidal activity on both Gram-positive and Gram-negative reference strains and tunable physicochemical properties of relevance in view of their "on-field" deployment. The link between material and functional properties is rationalized based on a multidisciplinary and multitechnique approach. Our results pave the way for engineering biofunctional, fully tunable nanoparticle coatings, exploiting an arbitrarily wide number of elements in a straightforward, eco-friendly, high-throughput, one-step process.
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Affiliation(s)
- Giulio Benetti
- Interdisciplinary Laboratories for Advanced Materials Physics (i-LAMP) and Dipartimento di Matematica e Fisica, Università Cattolica del Sacro Cuore, Via Musei 41, 25121 Brescia, Italy. luca.gavioli@unicatt and Laboratory of Solid State Physics and Magnetism, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium
| | - Emanuele Cavaliere
- Interdisciplinary Laboratories for Advanced Materials Physics (i-LAMP) and Dipartimento di Matematica e Fisica, Università Cattolica del Sacro Cuore, Via Musei 41, 25121 Brescia, Italy. luca.gavioli@unicatt
| | - Rosaria Brescia
- Electron Microscopy Facility, Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genova, Italy
| | - Sebastian Salassi
- Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - Riccardo Ferrando
- Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - André Vantomme
- Institute for Nuclear and Radiation Physics, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium
| | - Lucia Pallecchi
- Department of Medical Biotechnologies, University of Siena, Viale Bracci 1, 53100 Siena, Italy
| | - Simona Pollini
- Dipartimento di Medicina Sperimentale e Clinica, Università di Firenze, Largo Brambilla 1, 50134 Firenze, Italy
| | - Selene Boncompagni
- Department of Medical Biotechnologies, University of Siena, Viale Bracci 1, 53100 Siena, Italy
| | - Beatrice Fortuni
- Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Margriet J Van Bael
- Laboratory of Solid State Physics and Magnetism, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium
| | - Francesco Banfi
- FemtoNanoOptics group, Universitė de Lyon, Institut Lumière Matière (iLM), Université Lyon 1 and CNRS, 10 rue Ada Byron, 69622 Villeurbanne, France
| | - Luca Gavioli
- Interdisciplinary Laboratories for Advanced Materials Physics (i-LAMP) and Dipartimento di Matematica e Fisica, Università Cattolica del Sacro Cuore, Via Musei 41, 25121 Brescia, Italy. luca.gavioli@unicatt
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12
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Ojha S, Kumar B. A review on nanotechnology based innovations in diagnosis and treatment of multiple sclerosis. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.jocit.2017.12.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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13
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Song R, Zhang Y, Huang Q, Yang Y, Lin L, Liang J, Hu R, Rui G, Lin C. Facile Construction of Structural Gradient of TiO2 Nanotube Arrays on Medical Titanium for High Throughput Evaluation of Biocompatibility and Antibacterial Property. ACS APPLIED BIO MATERIALS 2018; 1:1056-1065. [DOI: 10.1021/acsabm.8b00288] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
| | | | | | | | | | | | | | - Gang Rui
- Department of Orthopedics Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, China
| | - Changjian Lin
- Beijing Engineering Laboratory of Functional Medical Materials and Devices, Beijing Medical Implant Engineering Research Center, Beijing Naton Technology Group Co. Ltd., Beijing 100082, China
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14
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Dwivedi C, Pandey I, Pandey H, Patil S, Mishra SB, Pandey AC, Zamboni P, Ramteke PW, Singh AV. In vivo diabetic wound healing with nanofibrous scaffolds modified with gentamicin and recombinant human epidermal growth factor. J Biomed Mater Res A 2017; 106:641-651. [PMID: 28986947 DOI: 10.1002/jbm.a.36268] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 08/21/2017] [Accepted: 10/04/2017] [Indexed: 12/30/2022]
Abstract
Diabetic wounds are susceptible to microbial infection. The treatment of these wounds requires a higher payload of growth factors. With this in mind, the strategy for this study was to utilize a novel payload comprising of Eudragit RL/RS 100 nanofibers carrying the bacterial inhibitor gentamicin sulfate (GS) in concert with recombinant human epidermal growth factor (rhEGF); an accelerator of wound healing. GS containing Eudragit was electrospun to yield nanofiber scaffolds, which were further modified by covalent immobilization of rhEGF to their surface. This novel fabricated nanoscaffold was characterized using scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction. The thermal behavior of the nanoscaffold was determined using thermogravimetric analysis and differential scanning calorimetry. In the in vitro antibacterial assays, the nanoscaffolds exhibited comparable antibacterial activity to pure gentemicin powder. In vivo work using female C57/BL6 mice, the nanoscaffolds induced faster wound healing activity in dorsal wounds compared to the control. The paradigm in this study presents a robust in vivo model to enhance the applicability of drug delivery systems in wound healing applications. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 641-651, 2018.
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Affiliation(s)
- Charu Dwivedi
- Department of Biological Sciences, Sam Higginbottom University of Agriculture, Technology and Sciences, Allahabad, 211007, India.,Nanotechnology Application Centre, Faculty of Science, University of Allahabad, Allahabad, 211002, India
| | - Ishan Pandey
- Department of Clinical Laboratory Science, Sam Higginbottom University of Agriculture, Technology and Sciences, Allahabad, 211001, India.,Department of Microbiology, Motilal Nehru Medical College (MLNMC), Allahabad, 211001, India
| | - Himanshu Pandey
- Nanotechnology Application Centre, Faculty of Science, University of Allahabad, Allahabad, 211002, India.,Department of Pharmaceutical Sciences, Faculty of Health Sciences, Sam Higginbottom University of Agriculture, Technology and Sciences, Allahabad, 211007, India
| | - Sandip Patil
- Department of Chemical Engineering, Indian Institute of Technology (IIT), Kanpur, 208016, India
| | | | - Avinash C Pandey
- Nanotechnology Application Centre, Faculty of Science, University of Allahabad, Allahabad, 211002, India
| | - Paolo Zamboni
- Vascular Disease Center, University of Ferrara, Ferrara, Italy
| | - Pramod W Ramteke
- Department of Biological Sciences, Sam Higginbottom University of Agriculture, Technology and Sciences, Allahabad, 211007, India
| | - Ajay Vikram Singh
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems, Stuttgart, 70569, Germany
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15
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Vikram Singh A, Gharat T, Batuwangala M, Park B, Endlein T, Sitti M. Three‐dimensional patterning in biomedicine: Importance and applications in neuropharmacology. J Biomed Mater Res B Appl Biomater 2017; 106:1369-1382. [DOI: 10.1002/jbm.b.33922] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Revised: 04/19/2017] [Accepted: 04/22/2017] [Indexed: 12/18/2022]
Affiliation(s)
- Ajay Vikram Singh
- Department of Physical IntelligenceMax Planck Institute for Intelligent Systems, Heisenbergstr 370569Stuttgart Germany
| | - Tanmay Gharat
- Department of Chemical and Biological EngineeringRensselaer Polytechnic InstituteNew York New York12180
| | - Madu Batuwangala
- Department of Physical IntelligenceMax Planck Institute for Intelligent Systems, Heisenbergstr 370569Stuttgart Germany
| | - Byung‐Wook Park
- Department of Physical IntelligenceMax Planck Institute for Intelligent Systems, Heisenbergstr 370569Stuttgart Germany
| | - Thomas Endlein
- Department of Physical IntelligenceMax Planck Institute for Intelligent Systems, Heisenbergstr 370569Stuttgart Germany
| | - Metin Sitti
- Department of Physical IntelligenceMax Planck Institute for Intelligent Systems, Heisenbergstr 370569Stuttgart Germany
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16
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Hydrophobic pinning with copper nanowhiskers leads to bactericidal properties. PLoS One 2017; 12:e0175428. [PMID: 28399162 PMCID: PMC5388474 DOI: 10.1371/journal.pone.0175428] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 03/24/2017] [Indexed: 12/12/2022] Open
Abstract
The considerable morbidity associated with hospitalized patients and clinics in developed countries due to biofilm formation on biomedical implants and surgical instruments is a heavy economic burden. An alternative to chemically treated surfaces for bactericidal activity started emerging from micro/nanoscale topographical cues in the last decade. Here, we demonstrate a putative antibacterial surface using copper nanowhiskers deposited by molecular beam epitaxy. Furthermore, the control of biological response is based on hydrophobic pinning of water droplets in the Wenzel regime, causing mechanical injury and cell death. Scanning electron microscopy images revealed the details of the surface morphology and non-contact mode laser scanning of the surface revealed the microtopography-associated quantitative parameters. Introducing the bacterial culture over nanowhiskers produces mechanical injury to cells, leading to a reduction in cell density over time due to local pinning of culture medium to whisker surfaces. Extended culture to 72 hours to observe biofilm formation revealed biofilm inhibition with scattered microcolonies and significantly reduced biovolume on nanowhiskers. Therefore, surfaces patterned with copper nanowhiskers can serve as potential antibiofilm surfaces. The topography-based antibacterial surfaces introduce a novel prospect in developing mechanoresponsive nanobiomaterials to reduce the risk of medical device biofilm-associated infections, contrary to chemical leaching of copper as a traditional bactericidal agent.
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17
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Singh AV, Sitti M. Patterned and Specific Attachment of Bacteria on Biohybrid Bacteria-Driven Microswimmers. Adv Healthc Mater 2016; 5:2325-31. [PMID: 27240122 DOI: 10.1002/adhm.201600155] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 04/14/2016] [Indexed: 11/06/2022]
Abstract
A surface patterning technique and a specific and strong biotin-streptavidin bonding of bacteria on patterned surfaces are proposed to fabricate Janus particles that are propelled by the attached bacteria. Bacteria-driven Janus microswimmers with diameters larger than 3 μm show enhanced mean propulsion speed. Such microswimmers could be used for future applications such as targeted drug delivery and environmental remediation.
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Affiliation(s)
- Ajay Vikram Singh
- Physical Intelligence Department; Max Planck Institute for Intelligent Systems; Heisenbergstr. 3 70569 Stuttgart Germany
| | - Metin Sitti
- Physical Intelligence Department; Max Planck Institute for Intelligent Systems; Heisenbergstr. 3 70569 Stuttgart Germany
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18
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Anitha VC, Lee JH, Lee J, Banerjee AN, Joo SW, Min BK. Biofilm formation on a TiO₂ nanotube with controlled pore diameter and surface wettability. NANOTECHNOLOGY 2015; 26:065102. [PMID: 25604920 DOI: 10.1088/0957-4484/26/6/065102] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Titania (TiO2) nanotube arrays (TNAs) with different pore diameters (140 - 20 nm) are fabricated via anodization using hydrofluoric acid (HF) containing ethylene glycol (EG) by changing the HF-to-EG volume ratio and the anodization voltage. To evaluate the effects of different pore diameters of TiO2 nanotubes on bacterial biofilm formation, Shewanella oneidensis (S. oneidensis) MR-1 cells and a crystal-violet biofilm assay are used. The surface roughness and wettability of the TNA surfaces as a function of pore diameter, measured via the contact angle and AFM techniques, are correlated with the controlled biofilm formation. Biofilm formation increases with the decreasing nanotube pore diameter, and a 20 nm TiO2 nanotube shows the maximum biofilm formation. The measurements revealed that 20 nm surfaces have the least hydrophilicity with the highest surface roughness of ∼17 nm and that they show almost a 90% increase in the effective surface area relative to the 140 nm TNAs, which stimulate the cells more effectively to produce the pili to attach to the surface for more biofilm formation. The results demonstrate that bacterial cell adhesion (and hence, biofilm formation) can effectively be controlled by tuning the roughness and wettability of TNAs via controlling the pore diameters of TNA surfaces. This biofilm formation as a function of the surface properties of TNAs can be a potential candidate for both medical applications and as electrodes in microbial fuel cells.
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Affiliation(s)
- V C Anitha
- School of Mechanical Engineering and Yeungnam University, Gyeongsan 712-749, Korea
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19
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Määttänen A, Fallarero A, Kujala J, Ihalainen P, Vuorela P, Peltonen J. Printed paper-based arrays as substrates for biofilm formation. AMB Express 2014; 4:32. [PMID: 25006538 PMCID: PMC4077624 DOI: 10.1186/s13568-014-0032-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 02/25/2014] [Indexed: 01/05/2023] Open
Abstract
The suitability of paper-based arrays for biofilm formation studies by Staphylococcus aureus is demonstrated. Laboratory-coated papers with different physicochemical properties were used as substrates. The array platform was fabricated by patterning the coated papers with vinyl-substituted polydimethylsiloxane (PDMS) -based ink. The affinity of bacteria onto the flexographically printed hydrophobic and smooth PDMS film was very low whereas bacterial adhesion and biofilm formation occurred preferentially on the unprinted areas, i.e. in the reaction arrays. The concentration of the attached bacteria was quantified by determining the viable colony forming unit (CFU/cm2) numbers. The distribution and the extent of surface coverage of the biofilms were determined by atomic force microscopy. In static conditions, the highest bacterial concentration and most highly organized biofilms were observed on substrates with high polarity. On a rough paper surface with low polarity, the biofilm formation was most hindered. Biofilms were effectively removed from a polar substrate upon exposure to (+)-dehydroabietic acid, an anti-biofilm compound.
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20
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de Avila ED, de Molon RS, Vergani CE, de Assis Mollo F, Salih V. The Relationship between Biofilm and Physical-Chemical Properties of Implant Abutment Materials for Successful Dental Implants. MATERIALS (BASEL, SWITZERLAND) 2014; 7:3651-3662. [PMID: 28788641 PMCID: PMC5453239 DOI: 10.3390/ma7053651] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 03/13/2014] [Accepted: 04/16/2014] [Indexed: 12/25/2022]
Abstract
The aim of this review was to investigate the relationship between biofilm and peri-implant disease, with an emphasis on the types of implant abutment surfaces. Individuals with periodontal disease typically have a large amount of pathogenic microorganisms in the periodontal pocket. If the individuals lose their teeth, these microorganisms remain viable inside the mouth and can directly influence peri-implant microbiota. Metal implants offer a suitable solution, but similarly, these remaining bacteria can adhere on abutment implant surfaces, induce peri-implantitis causing potential destruction of the alveolar bone near to the implant threads and cause the subsequent loss of the implant. Studies have demonstrated differences in biofilm formation on dental materials and these variations can be associated with both physical and chemical characteristics of the surfaces. In the case of partially edentulous patients affected by periodontal disease, the ideal type of implant abutments utilized should be one that adheres the least or negligible amounts of periodontopathogenic bacteria. Therefore, it is of clinically relevance to know how the bacteria behave on different types of surfaces in order to develop new materials and/or new types of treatment surfaces, which will reduce or inhibit adhesion of pathogenic microorganisms, and, thus, restrict the use of the abutments with indication propensity for bacterial adhesion.
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Affiliation(s)
- Erica Dorigatti de Avila
- Department of Dental Materials and Prosthodontics, School of Dentistry at Araraquara, University Estadual Paulista-UNESP, 1680, Araraquara, São Paulo 14801-903, Brazil.
| | - Rafael Scaf de Molon
- Department of Diagnostic and Surgery, School of Dentistry at Araraquara, University Estadual Paulista-UNESP, Araraquara, São Paulo 14801-903, Brazil.
| | - Carlos Eduardo Vergani
- Department of Dental Materials and Prosthodontics, School of Dentistry at Araraquara, University Estadual Paulista-UNESP, 1680, Araraquara, São Paulo 14801-903, Brazil.
| | - Francisco de Assis Mollo
- Department of Dental Materials and Prosthodontics, School of Dentistry at Araraquara, University Estadual Paulista-UNESP, 1680, Araraquara, São Paulo 14801-903, Brazil.
| | - Vehid Salih
- Peninsula School of Medicine & Dentistry, Plymouth University, C402, Portland Square, Drake Circus, Plymouth, Devon, PL4 8AA, UK.
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21
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Jeon H, Simon CG, Kim G. A mini-review: Cell response to microscale, nanoscale, and hierarchical patterning of surface structure. J Biomed Mater Res B Appl Biomater 2014; 102:1580-94. [DOI: 10.1002/jbm.b.33158] [Citation(s) in RCA: 145] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 03/04/2014] [Accepted: 03/13/2014] [Indexed: 12/17/2022]
Affiliation(s)
- HoJun Jeon
- Department of Bio-Mechatronic Engineering; College of Biotechnology and Bioengineering, Sungkyunkwan University; Suwon South Korea
| | - Carl G. Simon
- Biosystems and Biomaterials Division; National Institute of Standards and Technology; Gaithersburg Maryland
| | - GeunHyung Kim
- Department of Bio-Mechatronic Engineering; College of Biotechnology and Bioengineering, Sungkyunkwan University; Suwon South Korea
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22
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Quantification of the interaction between biomaterial surfaces and bacteria by 3-D modeling. Acta Biomater 2014; 10:267-75. [PMID: 24071002 DOI: 10.1016/j.actbio.2013.09.016] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 08/20/2013] [Accepted: 09/09/2013] [Indexed: 12/23/2022]
Abstract
It is general knowledge that bacteria/surface interactions depend on the surface topography. However, this well-known dependence has so far not been included in the modeling efforts. We propose a model for calculating interaction energies between spherical bacteria and arbitrarily structured 3-D surfaces, combining the Derjaguin, Landau, Verwey, Overbeek theory and an extended surface element integration method. The influence of roughness on the interaction (for otherwise constant parameters, e.g. surface chemistry, bacterial hydrophobicity) is quantified, demonstrating that common experimental approaches which consider amplitude parameters of the surface topography but which ignore spacing parameters fail to adequately describe the influence of surface roughness on bacterial adhesion. The statistical roughness profile parameters arithmetic average height (representing an amplitude parameter) and peak density (representing a spacing parameter) both exert a distinct influence on the interaction energy. The influence of peak density on the interaction energy increases with decreasing arithmetic average height and contributes significantly to the total interaction energy with an arithmetic average height below 70 nm. With the aid of the proposed model, different sensitivity ranges of the interaction between rough surfaces and bacteria are identified. On the nanoscale, the spacing parameter of the surface dominates the interaction, whereas on the microscale the amplitude parameter adopts the governing role.
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23
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Wang JL, Ren KF, Chang H, Zhang SM, Jin LJ, Ji J. Facile fabrication of robust superhydrophobic multilayered film based on bioinspired poly(dopamine)-modified carbon nanotubes. Phys Chem Chem Phys 2014; 16:2936-43. [DOI: 10.1039/c3cp54354d] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Singh AV, Patil R, Thombre DK, Gade WN. Micro-nanopatterning as tool to study the role of physicochemical properties on cell-surface interactions. J Biomed Mater Res A 2013; 101:3019-32. [PMID: 23559501 DOI: 10.1002/jbm.a.34586] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 12/27/2012] [Accepted: 12/31/2012] [Indexed: 11/09/2022]
Abstract
The current nano-biotechnologies interfacing synthetic materials and cell biology requires a better understanding of cell-surface interactions on the micro-to-nanometer scale. Cell-substrate interactions are mediated by the presence of proteins adsorbed from biological fluids to the substrate. The effect of nanotopography and surface chemistry on protein adsorption as well as the mediation effect on subsequent cellular communication with substratum is not well documented. This review discusses the role of physicochemical properties of cell-surface interactions and state-of-the-art methods currently available for micro-nanoscale surface fabrication and patterning. We also briefly discuss the current surface patterning techniques that allow the combination of a fine and independent control on nanotopography and chemistry to understand the effect of surface nanoscale substrate morphology on cell-surface interactions which has never been realized in previous reports. In addition, we discuss the influence of various chemical patterning and modulation of the nano-topography of surfaces on cell functionality and phenotype.
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Affiliation(s)
- Ajay Vikram Singh
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180-3590; Center for Biotechnology and Interdisciplinary Studies, Room 2145, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180
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