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Wu Y, Liu P, Mehrjou B, Chu PK. Interdisciplinary-Inspired Smart Antibacterial Materials and Their Biomedical Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2305940. [PMID: 37469232 DOI: 10.1002/adma.202305940] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/14/2023] [Accepted: 07/17/2023] [Indexed: 07/21/2023]
Abstract
The discovery of antibiotics has saved millions of lives, but the emergence of antibiotic-resistant bacteria has become another problem in modern medicine. To avoid or reduce the overuse of antibiotics in antibacterial treatments, stimuli-responsive materials, pathogen-targeting nanoparticles, immunogenic nano-toxoids, and biomimetic materials are being developed to make sterilization better and smarter than conventional therapies. The common goal of smart antibacterial materials (SAMs) is to increase the antibiotic efficacy or function via an antibacterial mechanism different from that of antibiotics in order to increase the antibacterial and biological properties while reducing the risk of drug resistance. The research and development of SAMs are increasingly interdisciplinary because new designs require the knowledge of different fields and input/collaboration from scientists in different fields. A good understanding of energy conversion in materials, physiological characteristics in cells and bacteria, and bactericidal structures and components in nature are expected to promote the development of SAMs. In this review, the importance of multidisciplinary insights for SAMs is emphasized, and the latest advances in SAMs are categorized and discussed according to the pertinent disciplines including materials science, physiology, and biomimicry.
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Affiliation(s)
- Yuzheng Wu
- Department of Physics, Department of Materials Science and Engineering and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Pei Liu
- Department of Physics, Department of Materials Science and Engineering and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Babak Mehrjou
- Department of Physics, Department of Materials Science and Engineering and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Paul K Chu
- Department of Physics, Department of Materials Science and Engineering and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
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2
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Cheng Y, Ma X, Franklin T, Yang R, Moraru CI. Mechano-Bactericidal Surfaces: Mechanisms, Nanofabrication, and Prospects for Food Applications. Annu Rev Food Sci Technol 2023; 14:449-472. [PMID: 36972158 DOI: 10.1146/annurev-food-060721-022330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Mechano-bactericidal (MB) nanopatterns have the ability to inactivate bacterial cells by rupturing cellular envelopes. Such biocide-free, physicomechanical mechanisms may confer lasting biofilm mitigation capability to various materials encountered in food processing, packaging, and food preparation environments. In this review, we first discuss recent progress on elucidating MB mechanisms, unraveling property-activity relationships, and developing cost-effective and scalable nanofabrication technologies. Next, we evaluate the potential challenges that MB surfaces may face in food-related applications and provide our perspective on the critical research needs and opportunities to facilitate their adoption in the food industry.
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Affiliation(s)
- Yifan Cheng
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York, USA;
- Department of Food Science and Technology, Virginia Tech, Blacksburg, Virginia, USA;
| | - Xiaojing Ma
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York, USA;
| | - Trevor Franklin
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York, USA;
| | - Rong Yang
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York, USA;
| | - Carmen I Moraru
- Department of Food Science, Cornell University, Ithaca, New York, USA;
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Lohmann SC, Tripathy A, Milionis A, Keller A, Poulikakos D. Effect of Flexibility and Size of Nanofabricated Topographies on the Mechanobactericidal Efficacy of Polymeric Surfaces. ACS APPLIED BIO MATERIALS 2022; 5:1564-1575. [PMID: 35176858 DOI: 10.1021/acsabm.1c01318] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Driven by the growing threat of antimicrobial resistance, the design of intrinsically bactericidal surfaces has been gaining significant attention. Proposed surface topography designs are often inspired by naturally occurring nanopatterns on insect wings that mechanically damage bacteria via membrane deformation. The stability of and the absence of chemicals in such surfaces support their facile and sustainable employment in avoiding surface-born pathogen transmission. Recently, the deflection of controllably nanofabricated pillar arrays has been shown to strongly affect bactericidal activity, with the limits of mechanical effectiveness of such structures remaining largely unexplored. Here, we examine the limits of softer, commonly used polymeric materials and investigate the interplay between pillar nanostructure sizing and flexibility for effective antibacterial functionality. A facile, scalable, UV nanoimprint lithography method was used to fabricate nanopillar array topographies of variable sizes and flexibilities. It was found that bacterial death on nanopillars in the range of diameters ≤100 nm and Young's moduli ≥1.3 GPa is increased by 3.5- to 5.6-fold, while thicker or softer pillars did not reduce bacterial viability. To further support our findings, we performed a finite element analysis of pillar deformation. It revealed that differences in the amount of stress exerted on bacterial membranes, generated from the stored elastic energy in flexible pillars, contribute to the observed bactericidal performance.
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Affiliation(s)
- Sophie C Lohmann
- Laboratory of Thermodynamics in Emerging Technologies, ETH Zurich, Zurich 8092, Switzerland
| | - Abinash Tripathy
- Laboratory of Thermodynamics in Emerging Technologies, ETH Zurich, Zurich 8092, Switzerland
| | - Athanasios Milionis
- Laboratory of Thermodynamics in Emerging Technologies, ETH Zurich, Zurich 8092, Switzerland
| | - Anja Keller
- Institute of Food, Nutrition and Health, ETH Zurich, Zurich 8092, Switzerland
| | - Dimos Poulikakos
- Laboratory of Thermodynamics in Emerging Technologies, ETH Zurich, Zurich 8092, Switzerland
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Biomimetic Polymer Surfaces by High Resolution Molding of the Wings of Different Cicadas. MATERIALS 2021; 14:ma14081910. [PMID: 33920457 PMCID: PMC8068934 DOI: 10.3390/ma14081910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/23/2021] [Accepted: 04/06/2021] [Indexed: 11/18/2022]
Abstract
Recent studies have shown that insect wings have evolved to have micro- and nanoscale structures on the wing surface, and biomimetic research aims to transfer such structures to application-specific materials. Herein, we describe a simple and cost-effective method of replica molding the wing topographies of four cicada species using UV-curable polymers. Different polymer blends of polyethylene glycol diacrylate and polypropylene glycol diacrylate were used as molding materials and a molding chamber was designed to precisely control the x, y, and z dimensions. Analysis by scanning electron microscopy showed that structures ranged from 148 to 854 nm in diameter, with a height range of 191–2368 nm, and wing patterns were transferred with high fidelity to the crosslinked polymer. Finally, bacterial cell studies show that the wing replicas possess the same antibacterial effect as the cicada wing from which they were molded. Overall, this work shows a quick and simple method for patterning UV-curable polymers without the use of expensive equipment, making it a highly accessible means of producing microstructured materials with biological properties.
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Çaykara T, Sande MG, Azoia N, Rodrigues LR, Silva CJ. Exploring the potential of polyethylene terephthalate in the design of antibacterial surfaces. Med Microbiol Immunol 2020; 209:363-372. [PMID: 32037497 PMCID: PMC7248016 DOI: 10.1007/s00430-020-00660-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 01/22/2020] [Indexed: 12/28/2022]
Abstract
Polyethylene terephthalate (PET) is one of the most used polymeric materials in the health care sector mainly due to its advantages that include biocompatibility, high uniformity, mechanical strength and resistance against chemicals and/or abrasion. However, avoiding bacterial contamination on PET is still an unsolved challenge and two main strategies are being explored to overcome this drawback: the anti-adhesive and biocidal modification of PET surface. While bacterial adhesion depends on several surface properties namely surface charge and energy, hydrophilicity and surface roughness, a biocidal effect can be obtained by antimicrobial compounds attached to the surface to inhibit the growth of bacteria (bacteriostatic) or kill bacteria (bactericidal). Therefore, it is well known that granting antibacterial properties to PET surface would be beneficial in the prevention of infectious diseases. Different modification methods have been reported for such purpose. This review addresses some of the strategies that have been attempted to prevent or reduce the bacterial contamination on PET surfaces, including functionalisation, grafting, topographical surface modification and coating. Those strategies, particularly the grafting method seems to be very promising for healthcare applications to prevent infectious diseases and the emergence of bacteria resistance.
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Affiliation(s)
- Tugçe Çaykara
- CENTI-Center for Nanotechnology and Smart Materials, Rua Fernando Mesquita 278, 4760-034, Vila Nova de Famalicão, Portugal
- CEB-Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Maria G Sande
- CEB-Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Nuno Azoia
- CENTI-Center for Nanotechnology and Smart Materials, Rua Fernando Mesquita 278, 4760-034, Vila Nova de Famalicão, Portugal
| | - Ligia R Rodrigues
- CEB-Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Carla Joana Silva
- CENTI-Center for Nanotechnology and Smart Materials, Rua Fernando Mesquita 278, 4760-034, Vila Nova de Famalicão, Portugal.
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Kim JH, Mun C, Ma J, Park SG, Lee S, Kim CS. Simple Fabrication of Transparent, Colorless, and Self-Disinfecting Polyethylene Terephthalate Film via Cold Plasma Treatment. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E949. [PMID: 32429311 PMCID: PMC7279332 DOI: 10.3390/nano10050949] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/09/2020] [Accepted: 05/12/2020] [Indexed: 12/17/2022]
Abstract
Cross-infection following cross-contamination is a serious social issue worldwide. Pathogens are normally spread by contact with germ-contaminated surfaces. Accordingly, antibacterial surface technologies are urgently needed and have consequently been actively developed in recent years. Among these technologies, biomimetic nanopatterned surfaces that physically kill adhering bacteria have attracted attraction as an effective technological solution to replace toxic chemical disinfectants (biocides). Herein, we introduce a transparent, colorless, and self-disinfecting polyethylene terephthalate (PET) film that mimics the surface structure of the Progomphus obscurus (sanddragon) wing physically killing the attached bacteria. The PET film was partially etched via a 4-min carbon tetrafluoride (CF4) plasma treatment. Compared to a flat bare PET film, the plasma-treated film surface exhibited a uniform array structure composed of nanopillars with a 30 nm diameter, 237 nm height, and 75 nm pitch. The plasma-treated PET film showed improvements in optical properties (transmittance and B*) and antibacterial effectiveness over the bare film; the transparency and colorlessness slightly increased, and the antibacterial activity increased from 53.8 to 100% for Staphylococcus aureus, and from 0 to 100% for Escherichia coli. These results demonstrated the feasibility of the CF4 plasma-treated PET film as a potential antibacterial overcoating with good optical properties.
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Affiliation(s)
- Ji-Hyeon Kim
- Advanced Nano-Surface Department, Korea Institute of Materials Science, Changwon 51508, Korea; (J.-H.K.); (C.M.); (J.M.); (S.-G.P.); (S.L.)
| | - ChaeWon Mun
- Advanced Nano-Surface Department, Korea Institute of Materials Science, Changwon 51508, Korea; (J.-H.K.); (C.M.); (J.M.); (S.-G.P.); (S.L.)
| | - Junfei Ma
- Advanced Nano-Surface Department, Korea Institute of Materials Science, Changwon 51508, Korea; (J.-H.K.); (C.M.); (J.M.); (S.-G.P.); (S.L.)
- School of Architectural, Civil, Environmental, and Energy Engineering, Kyungpook National University, Daegu 41566, Korea
| | - Sung-Gyu Park
- Advanced Nano-Surface Department, Korea Institute of Materials Science, Changwon 51508, Korea; (J.-H.K.); (C.M.); (J.M.); (S.-G.P.); (S.L.)
| | - Seunghun Lee
- Advanced Nano-Surface Department, Korea Institute of Materials Science, Changwon 51508, Korea; (J.-H.K.); (C.M.); (J.M.); (S.-G.P.); (S.L.)
| | - Chang Su Kim
- Advanced Nano-Surface Department, Korea Institute of Materials Science, Changwon 51508, Korea; (J.-H.K.); (C.M.); (J.M.); (S.-G.P.); (S.L.)
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Gao Q, Feng T, Huang D, Liu P, Lin P, Wu Y, Ye Z, Ji J, Li P, Huang W. Antibacterial and hydroxyapatite-forming coating for biomedical implants based on polypeptide-functionalized titania nanospikes. Biomater Sci 2020; 8:278-289. [PMID: 31691698 DOI: 10.1039/c9bm01396b] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Titanium (Ti)-based implants often suffer from detrimental bacterial adhesion and inefficient healing, so it is crucial to design a dual-functional coating that prevents bacterial infection and enhances bioactivity for a successful implant. Herein, we successfully devised a cationic polypeptide (Pep)-functionalized biomimetic nanostructure coating with superior activity, which could not only kill pathogenic bacteria rapidly and inhibit biofilm formation for up to two weeks, but also promote in situ hydroxyapatite (HAp) formation. Specifically, a titania (TiO2) nanospike coating (TNC) was fabricated by alkaline hydrothermal treatment firstly, followed by immobilization of rationally synthesized Pep via robust coordinative interactions, named TNPC. This coating was able to effectively kill (>99.9%) both Gram-positive Staphylococcus aureus (S. aureus) and Gram-negative Escherichia coli (E. coli) bacteria, while being non-toxic to murine MC3T3-E1 osteoblastic cells. Furthermore, the in vivo infection studies denoted that the adherent bacteria numbers on the TNPC implants were significantly reduced by 6 orders of magnitude than those on the pure Ti implants (p < 0.001). Importantly, in the presence of cationic amino groups and residual Ti-OH groups, substantial HAp deposition on the TNPC surface in Kokubo's simulated body fluid (SBF) occurred after 14 days. Altogether, our results support the clinical potential of this biomimetic dual-functional coating as a new approach with desirable antibacterial properties and HAp-forming ability in orthopedic and dental applications.
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Affiliation(s)
- Qiang Gao
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
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Yi G, Teong SP, Liu S, Chng S, Yang YY, Zhang Y. Iron-based nano-structured surfaces with antimicrobial properties. J Mater Chem B 2020; 8:10146-10153. [DOI: 10.1039/d0tb01941k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Bactericidal nanopillar array surfaces of FeOOH and Fe2O3 have been prepared as a cicada wing mimic. An even simpler structure-based antimicrobial surface was also made by coating with sea urchin-like FeOOH and Fe2O3 particles with a binder.
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Affiliation(s)
- Guangshun Yi
- Institute of Bioengineering and Nanotechnology
- 31 Biopolis Way
- The Nanos
- Singapore 138669
- Singapore
| | - Siew Ping Teong
- Institute of Bioengineering and Nanotechnology
- 31 Biopolis Way
- The Nanos
- Singapore 138669
- Singapore
| | - Shaoqiong Liu
- Institute of Bioengineering and Nanotechnology
- 31 Biopolis Way
- The Nanos
- Singapore 138669
- Singapore
| | - Shuyun Chng
- Singapore Institute of Manufacturing Technology
- 2 Fusionopolis Way
- #08-04, Innovis
- Singapore 138634
- Singapore
| | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology
- 31 Biopolis Way
- The Nanos
- Singapore 138669
- Singapore
| | - Yugen Zhang
- Institute of Bioengineering and Nanotechnology
- 31 Biopolis Way
- The Nanos
- Singapore 138669
- Singapore
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Jindai K, Nakade K, Masuda K, Sagawa T, Kojima H, Shimizu T, Shingubara S, Ito T. Adhesion and bactericidal properties of nanostructured surfaces dependent on bacterial motility. RSC Adv 2020; 10:5673-5680. [PMID: 35497460 PMCID: PMC9049231 DOI: 10.1039/c9ra08282d] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 01/26/2020] [Indexed: 01/29/2023] Open
Abstract
Different nanostructured surfaces have bactericidal properties that arise from the interaction between the bacteria and the nanostructured surface. In this study, we focused on the relationship between bacterial motility and bactericidal properties. The motility of Escherichia coli (E. coli) was tuned by genetic engineering, and four types of E. coli (wild type (WT), lacking flagella, and flagellated with deficient motility or deficient chemotaxis) were used to evaluate the adhesion and bactericidal properties of nanostructured surfaces. Cicada (Cryptotympana facialis) wings and Si nano-pillar array substrates were used as natural and artificial nanostructured surfaces, respectively. Differences in motility and chemotaxis strongly influenced the adhesion behavior and to some extent, the damage to the cell membrane. These results suggest that the bactericidal properties of nanostructured surfaces depend on bacterial motility. Bactericidal effect derived from nanostructured surface was evaluated in the point of view of the motility of E. coli. The results suggest that the properties strongly depend on bacterial motility.![]()
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Affiliation(s)
- Keisuke Jindai
- Graduate School of Science and Engineering
- Kansai University
- Osaka
- 564-8060 Japan
| | - Kazuki Nakade
- Graduate School of Science and Engineering
- Kansai University
- Osaka
- 564-8060 Japan
| | - Kyosuke Masuda
- Graduate School of Science and Engineering
- Kansai University
- Osaka
- 564-8060 Japan
| | - Takashi Sagawa
- National Institute of Information and Communications Technology
- Kobe
- 651-2492 Japan
| | - Hiroaki Kojima
- National Institute of Information and Communications Technology
- Kobe
- 651-2492 Japan
| | - Tomohiro Shimizu
- Graduate School of Science and Engineering
- Kansai University
- Osaka
- 564-8060 Japan
| | - Shoso Shingubara
- Graduate School of Science and Engineering
- Kansai University
- Osaka
- 564-8060 Japan
| | - Takeshi Ito
- Graduate School of Science and Engineering
- Kansai University
- Osaka
- 564-8060 Japan
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Abstract
The prevention of infectious diseases is a global challenge where multidrug-resistant bacteria or "superbugs" pose a serious threat to worldwide public health. Microtopographic surfaces have attracted much attention as they represent a biomimetic and nontoxic surface antibacterial strategy to replace biocides. The antimicrobial effect of such natural and biomimetic surface nanostructures involves a physical approach which eradicates bacteria via the structural features of the surfaces without any release of biocides or chemicals. These recent developments present a significant proof-of-concept and a powerful tool in which cellular adhesion and death caused by a physical approach, can be controlled by the micro/nanotopology of such surfaces. This represents an innovative direction of development of clean, effective and nonresistant antimicrobial surfaces. The minireview will cover novel approaches for the construction of nanostructures on surfaces in order to create antimicrobial surface in an environmentally friendly, nontoxic manner.
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Affiliation(s)
- Guangshun Yi
- a Institute of Bioengineering and Nanotechnology, The Nanos , Singapore , Singapore
| | - Siti Nurhanna Riduan
- a Institute of Bioengineering and Nanotechnology, The Nanos , Singapore , Singapore
| | - Yuan Yuan
- a Institute of Bioengineering and Nanotechnology, The Nanos , Singapore , Singapore
| | - Yugen Zhang
- a Institute of Bioengineering and Nanotechnology, The Nanos , Singapore , Singapore
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