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Xie Y, Li J, Bu D, Xie X, He X, Wang L, Zhou Z. Nepenthes-inspired multifunctional nanoblades with mechanical bactericidal, self-cleaning and insect anti-adhesive characteristics. RSC Adv 2019; 9:27904-27910. [PMID: 35530501 PMCID: PMC9071107 DOI: 10.1039/c9ra05198h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 08/24/2019] [Indexed: 01/22/2023] Open
Abstract
In order to reduce the widespread threat of bacterial pathogen diseases, mechanical bactericidal surfaces have been widely reported. However, few of these nanostructured surfaces were investigated from a sustainable perspective. In this study, we have prepared, inspired by the slippery zone of Nepenthes, a multifunctional nanostructured surface with mechanical bactericidal, self-cleaning and insect anti-adhesive characteristics. First, a nanoblade-like surface made of Zn–Al layered double hydroxides was prepared for achieving faster bactericidal rate and wider bactericidal spectrum (2.10 × 104 CFU cm−2 min−1 against Escherichia coli and 1.78 × 103 CFU cm−2 min−1 against Staphylococcus aureus). Then the self-cleaning and insect anti-adhesive properties were tested on the fluorosilane-modified nanoblades, leaving little cell debris remaining on the surface even after 4 continuous bactericidal experiments, and showing a slippery surface for ants to slide down in 3 s. This study not only discovers a new nature-inspired mechanical bactericidal nanotopography, but also provides a facile approach to incorporate multiple functions into the nanostructured surface for practical antibacterial applications. Inspired by the slippery zone of Nepenthes, we fabricated a multifunctional blade like nanostructured surface with the same mechanical bactericidal, self-cleaning and insect anti-adhesive characteristics.![]()
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Affiliation(s)
- Yuan Xie
- School of Materials Science and Engineering
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education)
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Jinyang Li
- School of Materials Science and Engineering
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education)
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Daqin Bu
- School of Materials Science and Engineering
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education)
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Xuedong Xie
- School of Materials Science and Engineering
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education)
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Xiaolong He
- National Laboratory of Biomacromolecules
- Institute of Biophysics
- Chinese Academy of Sciences
- Beijing 100101
- China
| | - Li Wang
- Qian Xuesen Laboratory of Space Technology
- Beijing 100094
- China
| | - Zuowan Zhou
- School of Materials Science and Engineering
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education)
- Southwest Jiaotong University
- Chengdu 610031
- China
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Howell C, Grinthal A, Sunny S, Aizenberg M, Aizenberg J. Designing Liquid-Infused Surfaces for Medical Applications: A Review. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1802724. [PMID: 30151909 DOI: 10.1002/adma.201802724] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 06/06/2018] [Indexed: 05/21/2023]
Abstract
The development of new technologies is key to the continued improvement of medicine, relying on comprehensive materials design strategies that can integrate advanced therapeutic and diagnostic functions with a variety of surface properties such as selective adhesion, dynamic responsiveness, and optical/mechanical tunability. Liquid-infused surfaces have recently come to the forefront as a unique approach to surface coatings that can resist adhesion of a wide range of contaminants on medical devices. Furthermore, these surfaces are proving highly versatile in enabling the integration of established medical surface treatments alongside the antifouling capabilities, such as drug release or biomolecule organization. Here, the range of research being conducted on liquid-infused surfaces for medical applications is presented, from an understanding of the basics behind the interactions of physiological fluids, microbes, and mammalian cells with liquid layers to current applications of these materials in point-of-care diagnostics, medical tubing, instruments, implants, and tissue engineering. Throughout this exploration, the design parameters of liquid-infused surfaces and how they can be adapted and tuned to particular applications are discussed, while identifying how the range of controllable factors offered by liquid-infused surfaces can be used to enable completely new and dynamic approaches to materials and devices for human health.
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Affiliation(s)
- Caitlin Howell
- Department of Chemical and Biomedical Engineering and School of Biomedical Science and Engineering, University of Maine, 5737 Jenness Hall, Orono, ME, 04469, USA
| | - Alison Grinthal
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, MA, 021383, USA
| | - Steffi Sunny
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, MA, 021383, USA
| | - Michael Aizenberg
- Wyss Institute for Biologically Inspired Engineering, 3 Blackfan Cir, Boston, MA, 02115, USA
| | - Joanna Aizenberg
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, MA, 021383, USA
- Wyss Institute for Biologically Inspired Engineering, 3 Blackfan Cir, Boston, MA, 02115, USA
- Kavli Institute for Bionano Science and Technology, Harvard University, 29 Oxford Street, Cambridge, MA, 02138, USA
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He W, Liu P, Zhang J, Yao X. Emerging Applications of Bioinspired Slippery Surfaces in Biomedical Fields. Chemistry 2018; 24:14864-14877. [DOI: 10.1002/chem.201801368] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Revised: 04/24/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Wenqing He
- Department of Biomedical Sciences; City University of Hong Kong; Tat Chee Avenue Kowloon Hong Kong P.R. China
| | - Peng Liu
- Department of Biomedical Sciences; City University of Hong Kong; Tat Chee Avenue Kowloon Hong Kong P.R. China
| | - Jianqiang Zhang
- Department of Biomedical Sciences; City University of Hong Kong; Tat Chee Avenue Kowloon Hong Kong P.R. China
| | - Xi Yao
- Department of Biomedical Sciences; City University of Hong Kong; Tat Chee Avenue Kowloon Hong Kong P.R. China
- City University of Hong Kong Shenzhen Research Institute; Shenzhen 518075 P.R. China
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Rather AM, Mahato S, Maji K, Gogoi N, Manna U. 'Reactive' nano-complex coated medical cotton: a facile avenue for tailored release of small molecules. NANOSCALE 2017; 9:16154-16165. [PMID: 28809421 DOI: 10.1039/c7nr03990e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Controlled and sustained release of drug-like small molecules in an aqueous medium still remains a challenging problem due to rapid infiltration of liquid water in most reported drug release systems. However, internal-superhydrophobicity with an antifouling property extending beyond the surface of a material recently has been recognized as a potential avenue for sustained and extended release of drug-like small molecules. Sluggish removal of metastable trapped air in a superhyrophobic material provides a basis to achieve extended release of encapsulated small molecules. In this article, naturally abundant medical-cotton-extensively used in wound management including control of bleeding, absorbance of secretions and protecting wounds from contamination-is strategically exploited in tailoring (from rapid to extended) the release of small molecules by appropriate modulation of liquid water wettability. Modulation included bio-mimicked adhesive and non-adhesive superhydrophobicity of the medical cotton without erosion of any polymeric material. In this process, amine 'reactive' nano-complexes (RNC) were prepared by just mixing branched poly(ethylenimine) (BPEI) with dipentaerythritol pentaacrylate (5Acl) in ethanol with appropriate compositions. Then they were covalently immobilized on fibrous medical-cotton through a facile and robust 1,4-conjugated addition reaction. Residual acrylate moieties in the immobilized RNC provide an opportunity to tailor water wettability through strategic and appropriate post-chemical modification of RNC-coated medical cotton with a primary amine containing various small molecules. This medical-cotton with tunable wettability was exploited further to control the release rate of small molecules from rapid (<24 h) to sustained (>100 days) times. A volatile solvent induced transient and reversible switching of anti-fouling properties which allowed further varying the amount of post-loading small molecules into the medical cotton up to 2.36 wt% without compromising the embedded anti-wetting property. Thus, our current approach has immense potential to develop appropriate materials for a sustained and controlled release of small molecules from a clinically relevant substrate (i.e., medical-cotton) and may be useful in various bio-medical applications including improving wound management, preventing bacterial infections, better pain management, etc.
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Affiliation(s)
- Adil Majeed Rather
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India.
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Kratochvil MJ, Yang T, Blackwell HE, Lynn DM. Nonwoven Polymer Nanofiber Coatings That Inhibit Quorum Sensing in Staphylococcus aureus: Toward New Nonbactericidal Approaches to Infection Control. ACS Infect Dis 2017; 3:271-280. [PMID: 28118541 PMCID: PMC5392134 DOI: 10.1021/acsinfecdis.6b00173] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We report the fabrication and biological evaluation of nonwoven polymer nanofiber coatings that inhibit quorum sensing (QS) and virulence in the human pathogen Staphylococcus aureus. Our results demonstrate that macrocyclic peptide 1, a potent and synthetic nonbactericidal quorum sensing inhibitor (QSI) in S. aureus, can be loaded into degradable polymer nanofibers by electrospinning and that this approach can deposit QSI-loaded nanofiber coatings onto model nonwoven mesh substrates. The QSI was released over ∼3 weeks when these materials were incubated in physiological buffer, retained its biological activity, and strongly inhibited agr-based QS in a GFP reporter strain of S. aureus for at least 14 days without promoting cell death. These materials also inhibited production of hemolysins, a QS-controlled virulence phenotype, and reduced the lysis of erythrocytes when placed in contact with wild-type S. aureus growing on surfaces. This approach is modular and can be used with many different polymers, active agents, and processing parameters to fabricate nanofiber coatings on surfaces important in healthcare contexts. S. aureus is one of the most common causative agents of bacterial infections in humans, and strains of this pathogen have developed significant resistance to conventional antibiotics. The QSI-based strategies reported here thus provide springboards for the development of new anti-infective materials and novel treatment strategies that target virulence as opposed to growth in S. aureus. This approach also provides porous scaffolds for cell culture that could prove useful in future studies on the influence of QS modulation on the development and structure of bacterial communities.
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Affiliation(s)
- Michael J. Kratochvil
- Department of Chemistry, 1101 University Avenue, University of Wisconsin–Madison, Madison, Wisconsin 53706
| | - Tian Yang
- Department of Chemistry, 1101 University Avenue, University of Wisconsin–Madison, Madison, Wisconsin 53706
| | - Helen E. Blackwell
- Department of Chemistry, 1101 University Avenue, University of Wisconsin–Madison, Madison, Wisconsin 53706
| | - David M. Lynn
- Department of Chemistry, 1101 University Avenue, University of Wisconsin–Madison, Madison, Wisconsin 53706
- Department of Chemical and Biological Engineering, 1415 Engineering Drive, University of Wisconsin–Madison, Madison, Wisconsin 53706
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Wang P, Zhang D, Sun S, Li T, Sun Y. Fabrication of Slippery Lubricant-Infused Porous Surface with High Underwater Transparency for the Control of Marine Biofouling. ACS APPLIED MATERIALS & INTERFACES 2017; 9:972-982. [PMID: 27992173 DOI: 10.1021/acsami.6b09117] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Marine optical instruments are bearing serious biofouling problem, which affects the accuracy of data collected. To solve the biofouling problem of marine optical instruments, a novel instance of slippery lubricant-infused porous surface (SLIPS) with high underwater-transparency was designed over glass substrate via infusing lubricant into its porous microstructure fabricated with hydrothermal method. The advantage of SLIPS as antibiofouling strategy to marine optical instruments was proven by comparing its underwater optical and antibiofouling performances with three kinds of samples (hydrophilic glass sample, textured hydrophilic glass sample, and superhydrophobic glass sample). The modification of SLIPS enhances the underwater-transparency of glass sample within the wavelength of 500-800 nm, for the infusion of lubricant with lower refractive index than glass substrate. In contrast with hydrophilic surface, textured hydrophilic surface and superhydrophobic surface, SLIPS can significantly inhibit bacterial and algal settlements, thereby maintaining high underwater-transparency in both dynamic and static seawater. The inhibition of bacterial and algal settlements over SLIPS results from its liquid-like property. The contact angle hysteresis of water over SLIPS increases with immersion time in seawater under different conditions (static, dynamic, and vibration conditions). Both dynamic and vibration conditions accelerate the failure of SLIPS exposed in seawater. This research provides valuable information for solving biofouling problem of marine optical instruments with SLIPS.
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Affiliation(s)
- Peng Wang
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences , 7 Naihai Road, Qingdao 266071, China
- State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute , Qingdao 266101, China
| | - Dun Zhang
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences , 7 Naihai Road, Qingdao 266071, China
| | - Shimei Sun
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences , 7 Naihai Road, Qingdao 266071, China
- University of the Chinese Academy of Sciences , 19 (Jia) Yuquan Road, Beijing 100039, China
| | - Tianping Li
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences , 7 Naihai Road, Qingdao 266071, China
- University of the Chinese Academy of Sciences , 19 (Jia) Yuquan Road, Beijing 100039, China
| | - Yan Sun
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences , 7 Naihai Road, Qingdao 266071, China
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