1
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Roca S, Leclercq L, Cottet H. Size-based characterization of dendrigraft poly(L-lysine) by free solution capillary electrophoresis using polyelectrolyte multilayer coatings. J Chromatogr A 2024; 1718:464719. [PMID: 38340458 DOI: 10.1016/j.chroma.2024.464719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 01/28/2024] [Accepted: 02/03/2024] [Indexed: 02/12/2024]
Abstract
Dendrigraft poly(L-lysine) (DGL) constitutes a promising dendritic-like drug vehicle with high biocompatibility and straightforward access via ring-opening polymerization of N-carboxyanhydride in water. The characterization of the different generations of DGL is however challenging due to their heterogeneity in molar mass and branching ratio. In this work, free solution capillary electrophoresis was used to perform selective separation of the three first generations of DGL, and optimized conditions were developed to maximize inter-generation resolution. To reduce solute adsorption on the capillary wall, successive multiple ionic polymer layer coatings terminated with a polycation were deposited onto the inner wall surface. PEGylated polycation was also used as the last layer for the control of the electroosmotic flow (EOF), depending on the PEGylation degree and the methyl-polyethylene glycol (mPEG) chain length. 1 kDa mPEG chains and low grafting densities were found to be the best experimental conditions for a fine tuning of the EOF leading to high peak resolution. Molar mass polydispersity and polydispersity in effective electrophoretic mobility were successfully determined for the three first generations of DGL.
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Affiliation(s)
- Sébastien Roca
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France
| | - Laurent Leclercq
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France.
| | - Hervé Cottet
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France.
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2
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Stepanova M, Nikiforov A, Tennikova T, Korzhikova-Vlakh E. Polypeptide-Based Systems: From Synthesis to Application in Drug Delivery. Pharmaceutics 2023; 15:2641. [PMID: 38004619 PMCID: PMC10674432 DOI: 10.3390/pharmaceutics15112641] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 11/02/2023] [Accepted: 11/16/2023] [Indexed: 11/26/2023] Open
Abstract
Synthetic polypeptides are biocompatible and biodegradable macromolecules whose composition and architecture can vary over a wide range. Their unique ability to form secondary structures, as well as different pathways of modification and biofunctionalization due to the diversity of amino acids, provide variation in the physicochemical and biological properties of polypeptide-containing materials. In this review article, we summarize the advances in the synthesis of polypeptides and their copolymers and the application of these systems for drug delivery in the form of (nano)particles or hydrogels. The issues, such as the diversity of polypeptide-containing (nano)particle types, the methods for their preparation and drug loading, as well as the influence of physicochemical characteristics on stability, degradability, cellular uptake, cytotoxicity, hemolysis, and immunogenicity of polypeptide-containing nanoparticles and their drug formulations, are comprehensively discussed. Finally, recent advances in the development of certain drug nanoformulations for peptides, proteins, gene delivery, cancer therapy, and antimicrobial and anti-inflammatory systems are summarized.
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Affiliation(s)
- Mariia Stepanova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, 199004 St. Petersburg, Russia; (M.S.); (A.N.)
| | - Alexey Nikiforov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, 199004 St. Petersburg, Russia; (M.S.); (A.N.)
| | - Tatiana Tennikova
- Institute of Chemistry, Saint-Petersburg State University, Universitetskiy pr. 26, Petergof, 198504 St. Petersburg, Russia
| | - Evgenia Korzhikova-Vlakh
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, 199004 St. Petersburg, Russia; (M.S.); (A.N.)
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3
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Modifying last layer in polyelectrolyte multilayer coatings for capillary electrophoresis of proteins. J Chromatogr A 2023; 1692:463837. [PMID: 36804799 DOI: 10.1016/j.chroma.2023.463837] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/23/2023] [Accepted: 01/27/2023] [Indexed: 02/04/2023]
Abstract
Protein adsorption on the inner wall of the fused silica capillary wall is an important concern for capillary electrophoresis (CE) analysis since it is mainly responsible for separation efficiency reduction. Successive Multiple Ionic-polymer Layers (SMIL) are used as capillary coatings to limit protein adsorption, but even low residual adsorption strongly impacts the separation efficiency, especially at high separation voltages. In this work, the influence of the chemical nature and the PEGylation of the polyelectrolyte deposited in the last layer of the SMIL coating was investigated on the separation performances of a mixture of four model intact proteins (myoglobin (Myo), trypsin inhibitor (TI), ribonuclease a (RNAse A) and lysozyme (Lyz)). Poly(allylamine hydrochloride) (PAH), polyethyleneimine (PEI), ε-poly(L-lysine) (εPLL) and α-poly(L-lysine) (αPLL) were compared before and after chemical modification with polyethyleneglycol (PEG) of different chain lengths. The experimental results obtained by performing electrophoretic separations at different separation voltages allowed determining the residual retention factor of the proteins onto the capillary wall via the determination of the plate height at different solute velocities and demonstrated a strong impact of the polycationic last layer on the electroosmotic mobility, the separation efficiency and the overall resolution. Properties of SMIL coatings were also characterized by quartz microbalance and atomic force microscopy, demonstrating a glassy structure of the films.
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4
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Influence of electrode surface charge on current production by Geobacter sulfurreducens microbial anodes. Bioelectrochemistry 2022; 147:108213. [DOI: 10.1016/j.bioelechem.2022.108213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 07/05/2022] [Accepted: 07/15/2022] [Indexed: 12/25/2022]
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5
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Zhang X, Bai R, Sun Q, Zhuang Z, Zhang Y, Chen S, Han B. Bio-inspired special wettability in oral antibacterial applications. Front Bioeng Biotechnol 2022; 10:1001616. [PMID: 36110327 PMCID: PMC9468580 DOI: 10.3389/fbioe.2022.1001616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 08/05/2022] [Indexed: 11/13/2022] Open
Abstract
Most oral diseases originate from biofilms whose formation is originated from the adhesion of salivary proteins and pioneer bacteria. Therefore, antimicrobial materials are mainly based on bactericidal methods, most of which have drug resistance and toxicity. Natural antifouling surfaces inspire new antibacterial strategies. The super wettable surfaces of lotus leaves and fish scales prompt design of biomimetic oral materials covered or mixed with super wettable materials to prevent adhesion. Bioinspired slippery surfaces come from pitcher plants, whose porous surfaces are infiltrated with lubricating liquid to form superhydrophobic surfaces to reduce the contact with liquids. It is believed that these new methods could provide promising directions for oral antimicrobial practice, improving antimicrobial efficacy.
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Affiliation(s)
- Xin Zhang
- Department of Orthodontics, School and Hospital of Stomatology, Peking University, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Rushui Bai
- Department of Orthodontics, School and Hospital of Stomatology, Peking University, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Qiannan Sun
- Department of Orthodontics, School and Hospital of Stomatology, Peking University, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Zimeng Zhuang
- Department of Orthodontics, School and Hospital of Stomatology, Peking University, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Yunfan Zhang
- Department of Orthodontics, School and Hospital of Stomatology, Peking University, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
- *Correspondence: Yunfan Zhang, ; Si Chen, ; Bing Han,
| | - Si Chen
- Department of Orthodontics, School and Hospital of Stomatology, Peking University, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
- *Correspondence: Yunfan Zhang, ; Si Chen, ; Bing Han,
| | - Bing Han
- Department of Orthodontics, School and Hospital of Stomatology, Peking University, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
- *Correspondence: Yunfan Zhang, ; Si Chen, ; Bing Han,
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6
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Kumar M, Gupta G, Varghese T, Srivastava PP, Gupta S. Preparation and characterization of glucose-conjugated super-paramagnetic iron oxide nanoparticles (G-SPIONs) for removal of Edwardsiella tarda and Aeromonas hydrophila from water. Microsc Res Tech 2022; 85:1768-1783. [PMID: 35038205 DOI: 10.1002/jemt.24037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 12/10/2021] [Accepted: 12/13/2021] [Indexed: 11/09/2022]
Abstract
The present research was conducted to prepare efficient G-SPIONs by co-precipitation to remove Edwardsiella tarda and Aeromonas hydrophila from the aqueous solution. The synthesized G-SPIONs were characterized by UV-Vis spectrophotometer, DLS, FEG-TEM, FT-IR, XRD, and VSM analysis. The results showed that the synthesized G-SPIONs had super-paramagnetic properties (58.31 emu/g) and spherical shape (16 ± 3 nm). The antibacterial activity was assessed in sterilized distilled water at different G-SPIONs concentrations viz. 0, 1.5, 3, 6, 12, 24, 48, 120, and 240 mg/L against E. tarda and A. hydrophila with various bacterial loads viz. 1 × 103 , 1 × 104 , 1 × 105 , 1 × 106 , and 1 × 107 CFU/ml at different time intervals 15, 30, 45, and 60 min. At a lower bacterial load of E. tarda and A. hydrophila 1 × 103 -1 × 104 CFU/ml, 100% bacterial load was removed by 15 min exposure with NPs concentration 6-48 mg/L and 1.5-6 mg/L, respectively. Cent percent bacterial removal was observed in both the bacterial species even at higher bacterial load (1 × 105 -1 × 107 CFU/ml) by increasing exposure time (15-60 min) and nanoparticle concentration as well (24-240 mg/L). At an initial bacterial load of E. tarda and A. hydrophila (1 × 103 -1 × 107 CFU/ml), the EC50 ranged between 0.01-6.51 mg/L and 0.02-3.84 mg/L, respectively, after 15-60 min exposure. Thus, it is concluded that the antibacterial effect of G-SPIONs depends on concentration and exposure time. Hence, G-SPIONs can be used as an antibacterial/biocidal agent to treat Edwardsiellosis and Aeromonosis disease in aquaculture.
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Affiliation(s)
- Munish Kumar
- Fish Nutrition, Biochemistry and Physiology Division, ICAR-Central Institute of Fisheries Education, Mumbai, India
| | - Gyandeep Gupta
- Fish Nutrition, Biochemistry and Physiology Division, ICAR-Central Institute of Fisheries Education, Mumbai, India
| | - Tincy Varghese
- Fish Nutrition, Biochemistry and Physiology Division, ICAR-Central Institute of Fisheries Education, Mumbai, India
| | | | - Subodh Gupta
- Fish Nutrition, Biochemistry and Physiology Division, ICAR-Central Institute of Fisheries Education, Mumbai, India
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7
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Kruk T, Bzowska M, Hinz A, Szuwarzyński M, Szczepanowicz K. Control of Specific/Nonspecific Protein Adsorption: Functionalization of Polyelectrolyte Multilayer Films as a Potential Coating for Biosensors. MATERIALS (BASEL, SWITZERLAND) 2021; 14:7629. [PMID: 34947226 PMCID: PMC8706203 DOI: 10.3390/ma14247629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 11/28/2021] [Accepted: 12/07/2021] [Indexed: 01/23/2023]
Abstract
Control of nonspecific/specific protein adsorption is the main goal in the design of novel biomaterials, implants, drug delivery systems, and sensors. The specific functionalization of biomaterials can be achieved by proper surface modification. One of the important strategies is covering the materials with functional coatings. Therefore, our work aimed to functionalize multilayer coating to control nonspecific/specific protein adsorption. The polyelectrolyte coating was formed using a layer-by-layer technique (LbL) with biocompatible polyelectrolytes poly-L-lysine hydrobromide (PLL) and poly-L-glutamic acid (PGA). Nonspecific protein adsorption was minimized/eliminated by pegylation of multilayer films, which was achieved by adsorption of pegylated polycations (PLL-g-PEG). The influence of poly (ethylene glycol) chain length on eliminating nonspecific protein adsorption was confirmed. Moreover, to achieve specific protein adsorption, the multilayer film was also functionalized by immobilization of antibodies via a streptavidin bridge. The functional coatings were tested, and the adsorption of the following proteins confirmed the ability to control nonspecific/specific adsorption: human serum albumin (HSA), fibrinogen (FIB), fetal bovine serum (FBS), carcinoembryonic antigen human (CEA) monitored by quartz crystal microbalance with dissipation (QCM-D). AFM imaging of unmodified and modified multilayer surfaces was also performed. Functional multilayer films are believed to have the potential as a novel platform for biotechnological applications, such as biosensors and nanocarriers for drug delivery systems.
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Affiliation(s)
- Tomasz Kruk
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, PL-30239 Krakow, Poland
| | - Monika Bzowska
- Department of Cell Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, PL-30348 Krakow, Poland; (M.B.); (A.H.)
| | - Alicja Hinz
- Department of Cell Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, PL-30348 Krakow, Poland; (M.B.); (A.H.)
| | - Michał Szuwarzyński
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Mickiewicza 30, PL-30059 Krakow, Poland;
| | - Krzysztof Szczepanowicz
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, PL-30239 Krakow, Poland
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8
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Etayash H, Hancock REW. Host Defense Peptide-Mimicking Polymers and Polymeric-Brush-Tethered Host Defense Peptides: Recent Developments, Limitations, and Potential Success. Pharmaceutics 2021; 13:1820. [PMID: 34834239 PMCID: PMC8621177 DOI: 10.3390/pharmaceutics13111820] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/21/2021] [Accepted: 10/23/2021] [Indexed: 12/17/2022] Open
Abstract
Amphiphilic antimicrobial polymers have attracted considerable interest as structural mimics of host defense peptides (HDPs) that provide a broad spectrum of activity and do not induce bacterial-drug resistance. Likewise, surface engineered polymeric-brush-tethered HDP is considered a promising coating strategy that prevents infections and endows implantable materials and medical devices with antifouling and antibacterial properties. While each strategy takes a different approach, both aim to circumvent limitations of HDPs, enhance physicochemical properties, therapeutic performance, and enable solutions to unmet therapeutic needs. In this review, we discuss the recent advances in each approach, spotlight the fundamental principles, describe current developments with examples, discuss benefits and limitations, and highlight potential success. The review intends to summarize our knowledge in this research area and stimulate further work on antimicrobial polymers and functionalized polymeric biomaterials as strategies to fight infectious diseases.
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Affiliation(s)
| | - Robert E. W. Hancock
- Centre for Microbial Diseases and Immunity Research, Department of Microbiology and Immunology, University of British Columbia, 2259 Lower Mall Research Station, Vancouver, BC V6T 1Z4, Canada;
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9
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Gnanasampanthan T, Beyer CD, Yu W, Karthäuser JF, Wanka R, Spöllmann S, Becker HW, Aldred N, Clare AS, Rosenhahn A. Effect of Multilayer Termination on Nonspecific Protein Adsorption and Antifouling Activity of Alginate-Based Layer-by-Layer Coatings. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:5950-5963. [PMID: 33969986 DOI: 10.1021/acs.langmuir.1c00491] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Layer-by-layer (LbL) assembly is a versatile platform for applying coatings and studying the properties of promising compounds for antifouling applications. Here, alginate-based LbL coatings were fabricated by alternating the deposition of alginic acid and chitosan or polyethylenimine to form multilayer coatings. Films were prepared with either odd or even bilayer numbers to investigate if the termination of the LbL coatings affects the physicochemical properties, resistance against the nonspecific adsorption (NSA) of proteins, and antifouling efficacy. The hydrophilic films, which were characterized using spectroscopic ellipsometry, water contact angle goniometry, ATR-FTIR spectroscopy, AFM, XPS, and SPR spectroscopy, revealed high swelling in water and strongly reduced the NSA of proteins compared to the hydrophobic reference. While the choice of the polycation was important for the protein resistance of the LbL coatings, the termination mattered less. The attachment of diatoms and settling of barnacle cypris larvae revealed good antifouling properties that were controlled by the termination and the charge density of the LbL films.
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Affiliation(s)
| | | | | | | | | | | | | | - Nick Aldred
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom
- School of Life Sciences, University of Essex, Wivenhoe Park, Colchester, CO4 3SQ, United Kingdom
| | - Anthony S Clare
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom
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10
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Díez-Pascual AM. Recent Progress in Antimicrobial Nanomaterials. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E2315. [PMID: 33238368 PMCID: PMC7700142 DOI: 10.3390/nano10112315] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/03/2020] [Accepted: 11/13/2020] [Indexed: 12/27/2022]
Abstract
Bacterial infections are a well-known and serious problem in numerous areas of everyday life, causing death, pain, and huge added costs to healthcare worldwide [...].
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Affiliation(s)
- Ana Maria Díez-Pascual
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Sciences, Institute of Chemistry Research "Andrés M. del Río" (IQAR), University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.6, 28871 Alcalá de Henares, Madrid, Spain
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11
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Movilli J, Choudhury SS, Schönhoff M, Huskens J. Enhancement of Probe Density in DNA Sensing by Tuning the Exponential Growth Regime of Polyelectrolyte Multilayers. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2020; 32:9155-9166. [PMID: 33191977 PMCID: PMC7659331 DOI: 10.1021/acs.chemmater.0c02454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 10/12/2020] [Indexed: 06/11/2023]
Abstract
Surface-based biosensing devices benefit from a dedicated design of the probe layer present at the transducing interface. The layer architecture, its physicochemical properties, and the embedding of the receptor sites affect the probability of binding the analyte. Here, the enhancement of the probe density at the sensing interface by tuning the exponential growth regime of polyelectrolyte multilayers (PEMs) is presented. PEMs were made of poly-l-lysine (PLL), with appended clickable dibenzocyclooctyne (DBCO) groups and oligo(ethylene glycol) chains, and poly(styrene sulfonate) (PSS). The DNA probe loading and target hybridization efficiencies of the PEMs were evaluated as a function of the PLL layer number and the growth regime by a quartz crystal microbalance (QCM). An amplification factor of 25 in the target DNA detection was found for a 33-layer exponentially grown PEM compared to a monolayer. A Voigt-based model showed that DNA probe binding to the DBCO groups is more efficient in the open, exponentially grown films, while the hybridization efficiencies appeared to be high for all layer architectures. These results show the potential of such engineered gel-like structures to increase the detection of bio-relevant analytes in biosensing systems.
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Affiliation(s)
- Jacopo Movilli
- Molecular
NanoFabrication group, MESA+ Institute for Nanotechnology, Faculty
of Science and Technology, University of
Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
| | - Salmeen Shakil Choudhury
- Molecular
NanoFabrication group, MESA+ Institute for Nanotechnology, Faculty
of Science and Technology, University of
Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
| | - Monika Schönhoff
- Institute
of Physical Chemistry, and Center for Soft Nanoscience, University of Münster, Corrensstr. 28/30, 48149 Münster, Germany
| | - Jurriaan Huskens
- Molecular
NanoFabrication group, MESA+ Institute for Nanotechnology, Faculty
of Science and Technology, University of
Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
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12
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Maldonado J, Estévez MC, Fernández-Gavela A, González-López JJ, González-Guerrero AB, Lechuga LM. Label-free detection of nosocomial bacteria using a nanophotonic interferometric biosensor. Analyst 2020; 145:497-506. [PMID: 31750459 DOI: 10.1039/c9an01485c] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Nosocomial infections are a major concern at the worldwide level. Early and accurate identification of nosocomial pathogens is crucial to provide timely and adequate treatment. A prompt response also prevents the progression of the infection to life-threatening conditions, such as septicemia or generalized bloodstream infection. We have implemented two highly sensitive methodologies using an ultrasensitive photonic biosensor based on a bimodal waveguide interferometer (BiMW) for the fast detection of Pseudomonas aeruginosa and methicillin-resistant Staphylococcus aureus (MRSA), two of the most prevalent bacteria associated with nosocomial infections. For that, we have developed a biofunctionalization strategy based on the use of a PEGylated silane (silane-PEG-COOH) which provides a highly resistant and bacteria-repelling surface, which is crucial to specifically detect each bacterium. Two different biosensor assays have been set under standard buffer conditions: one based on a specific direct immunoassay employing polyclonal antibodies for the detection of P. aeruginosa and another one employing aptamers for the direct detection of MRSA. The biosensor immunoassay for P. aeruginosa is fast (it only takes 12 min) and specific and has experimentally detected concentrations down to 800 cfu mL-1 (cfu: colony forming unit). The second one relies on the use of an aptamer that specifically detects penicillin-binding protein 2a (PBP2a), a protein only expressed in the MRSA mutant, providing a photonic biosensor with the ability to identify the resistant pathogen MRSA and differentiate it from methicillin-susceptible S. aureus (MSSA). Direct, label-free, and selective detection of whole MRSA bacteria has been achieved, making possible the direct detection of also 800 cfu mL-1. According to the signal-to-noise (S/N) ratio of the device, a theoretical limit of detection (LOD) of around 49 and 29 cfu mL-1 was estimated for P. aeruginosa and MRSA, respectively. Both results obtained under standard conditions reveal the great potential this interferometric biosensor device has as a versatile and specific tool for bacterial detection and quantification, providing a rapid method for the identification of nosocomial pathogens within the clinical requirements of sensitivity for the diagnosis of infections.
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Affiliation(s)
- Jesús Maldonado
- Nanobiosensors and Bioanalytical Applications Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN, and BIST, Campus UAB, 08193 Bellaterra, Barcelona, Spain.
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13
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Batys P, Morga M, Bonarek P, Sammalkorpi M. pH-Induced Changes in Polypeptide Conformation: Force-Field Comparison with Experimental Validation. J Phys Chem B 2020; 124:2961-2972. [PMID: 32182068 PMCID: PMC7590956 DOI: 10.1021/acs.jpcb.0c01475] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Indexed: 12/17/2022]
Abstract
Microsecond-long all-atom molecular dynamics (MD) simulations, circular dichroism, laser Doppler velocimetry, and dynamic light-scattering techniques have been used to investigate pH-induced changes in the secondary structure, charge, and conformation of poly l-lysine (PLL) and poly l-glutamic acid (PGA). The employed combination of the experimental methods reveals for both PLL and PGA a narrow pH range at which they are charged enough to form stable colloidal suspensions, maintaining their α-helix content above 60%; an elevated charge state of the peptides required for colloidal stability promotes the peptide solvation as a random coil. To obtain a more microscopic view on the conformations and to verify the modeling performance, peptide secondary structure and conformations rising in MD simulations are also examined using three different force fields, i.e., OPLS-AA, CHARMM27, and AMBER99SB*-ILDNP. Ramachandran plots reveal that in the examined setup the α-helix content is systematically overestimated in CHARMM27, while OPLS-AA overestimates the β-sheet fraction at lower ionization degrees. At high ionization degrees, the OPLS-AA force-field-predicted secondary structure fractions match the experimentally measured distribution most closely. However, the pH-induced changes in PLL and PGA secondary structure are reasonably captured only by the AMBER99SB*-ILDNP force field, with the exception of the fully charged PGA in which the α-helix content is overestimated. The comparison to simulations results shows that the examined force fields involve significant deviations in their predictions for charged homopolypeptides. The detailed mapping of secondary structure dependency on pH for the polypeptides, especially finding the stable colloidal α-helical regime for both examined peptides, has significant potential for practical applications of the charged homopolypeptides. The findings raise attention especially to the pH fine tuning as an underappreciated control factor in surface modification and self-assembly.
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Affiliation(s)
- Piotr Batys
- Jerzy
Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, PL-30239 Krakow, Poland
| | - Maria Morga
- Jerzy
Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, PL-30239 Krakow, Poland
| | - Piotr Bonarek
- Department
of Physical Biochemistry, Faculty of Biochemistry, Biophysics and
Biotechnology, Jagiellonian University, Krakow, Poland
| | - Maria Sammalkorpi
- Department of Chemistry and Materials Science and Department of Bioproducts and Biosystems, Aalto University, P.O. Box 16100, 00076 Aalto, Finland
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14
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Layer by Layer Antimicrobial Coatings Based on Nafion, Lysozyme, and Chitosan. NANOMATERIALS 2019; 9:nano9111563. [PMID: 31689966 PMCID: PMC6915488 DOI: 10.3390/nano9111563] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 10/28/2019] [Accepted: 10/28/2019] [Indexed: 12/12/2022]
Abstract
The study focuses on the development of a new family of layer-by-layer coatings comprising Nafion, lysozyme and chitosan to address challenges related to microbial contamination. Circular dichroism was employed to gain insights on the interactions of the building blocks at the molecular level. Quartz crystal microbalance tests were used to monitor in real time the build-up of multilayer coatings, while atomic force microscopy, contact angle and surface zeta potential measurements were performed to assess the surface characteristics of the multilayer assemblies. Remarkably, the nanocoated surfaces show almost 100% reduction in the population of both Escherichia coli and Staphylococcus aureus. The study suggests that Nafion based synergistic platforms can offer an effective line of defence against bacteria, facilitating antimicrobial mechanisms that go beyond the concept of exclusion zone.
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15
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Park K, Jeong H, Tanum J, Yoo JC, Hong J. Developing regulatory property of gelatin-tannic acid multilayer films for coating-based nitric oxide gas delivery system. Sci Rep 2019; 9:8308. [PMID: 31165751 PMCID: PMC6549184 DOI: 10.1038/s41598-019-44678-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 05/09/2019] [Indexed: 12/17/2022] Open
Abstract
To utilize potentials of nitric oxide (NO) gas in anti-bacterial, anticancer, wound healing applications, numerous studies have been conducted to develop a NO delivery system in the past few decades. Even though a coating method and film types are essential to apply in biomedical device coating from previous NO delivery systems, release control from the coating system is still challenging. In this study, we introduced a multilayered polymeric coating system to overcome the uncontrollable NO release kinetics of film systems. We used biocompatible gelatin and tannic acid to construct a rough, porous structured film based on the layer-by-layer self-assembly method. The multilayered polymeric structure facilitated the controlled amount of NO release from (Gel/TA)n film and showed burst release in early period owing to their large surface area from the rough, porous structure. We synthesized the proton-responsive NO donor, N-diazeniumdiolate (NONOates), into the (Gel/TA)n film through a chemical reaction under high pressure NO gas. NO release profile was analyzed by a real-time NO analysis machine (NOA 280i). Then, the NO-releasing (Gel/TA)n film was tested its toxicity against human dermal fibroblast cells and bactericidal effects against Staphylococcus aureus.
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Affiliation(s)
- Kyungtae Park
- School of Chemical & Biomolecular Engineering, Yonsei University, 50 Yonsei Ro, Seodaemun Gu, Seoul, 03722, Republic of Korea
| | - Hyejoong Jeong
- School of Chemical & Biomolecular Engineering, Yonsei University, 50 Yonsei Ro, Seodaemun Gu, Seoul, 03722, Republic of Korea
| | - Junjira Tanum
- School of Chemical & Biomolecular Engineering, Yonsei University, 50 Yonsei Ro, Seodaemun Gu, Seoul, 03722, Republic of Korea
| | - Jae-Chan Yoo
- Biotechnology Research Center, JCBIO Co., LTD & Avison Biomedical Research Center (ABMRC), Yonsei University, Seoul, 03722, Republic of Korea
| | - Jinkee Hong
- School of Chemical & Biomolecular Engineering, Yonsei University, 50 Yonsei Ro, Seodaemun Gu, Seoul, 03722, Republic of Korea.
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16
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QCM-D characterization of time-dependence of bacterial adhesion. ACTA ACUST UNITED AC 2019; 5:100024. [PMID: 32743140 PMCID: PMC7389184 DOI: 10.1016/j.tcsw.2019.100024] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 01/29/2019] [Accepted: 03/29/2019] [Indexed: 12/22/2022]
Abstract
Quartz crystal microbalance with dissipation monitoring (QCM-D) is becoming an increasingly popular technique that can be employed as part of experimental and modeling investigations of bacterial adhesion. The usefulness of QCM-D derives from this technique's ability to probe binding and interactions under dynamic conditions, in real time. Bacterial adhesion is an important first step in the formation of biofilms, the control of which is relevant to industries that include shipping, water purification, packaging, and biomedical devices. However, many questions remain unanswered in the bacterial adhesion process, despite extensive research in this area. With QCM-D, multiple variables affecting bacterial adhesion can be studied, including the roles of substrate composition, chemical modification, solution ionic strength, environmental temperature, shear conditions, and time. Recent studies demonstrate the utility of QCM-D in developing new bacterial adhesion models and studying different stages of biofilm formation. We provide a review of how QCM-D has been used to study bacterial adhesion at stages ranging from the first step of bacterial adhesion to mature biofilms, and how QCM-D studies are being used to promote the development of solutions to biofilm formation.
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17
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Xin X, Li P, Zhu Y, Shi L, Yuan J, Shen J. Mussel-Inspired Surface Functionalization of PET with Zwitterions and Silver Nanoparticles for the Dual-Enhanced Antifouling and Antibacterial Properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1788-1797. [PMID: 30089363 DOI: 10.1021/acs.langmuir.8b01603] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Herein, we designed and constructed a dual functional surface with antimicrobial and antifouling abilities to prevent protein and bacterial attachment that are significant challenges in biomedical devices. Primary amino-group-capped sulfobetaine of DMMSA was synthesized and then grafted onto polydopamine pretreated PET sheets via click chemistry. The sheets were subsequently immersed into silver ion solution, in which the absorbed silver ions were reduced to silver nanoparticles (AgNPs) in situ by a polydopamine layer. The antifouling assays demonstrated that the resultant PET/DMMSA/AgNPs sheets exhibited great antifouling performances against bovine serum albumin (BSA), bovine fibrinogen (BFG), platelets, and bacteria, the critical proteins/microorganisms leading to implant failure. The antibacterial data suggested that the sheets had dual functions as inhibitors of bacterial growth and bactericide and could efficiently delay the biofilm formation. This repelling and killing approach is green and simple, with potential biomedical applications.
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Affiliation(s)
- Xuanxuan Xin
- Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science , Nanjing Normal University , Nanjing 210023 , China
| | - Pengfei Li
- Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science , Nanjing Normal University , Nanjing 210023 , China
| | - Yinyan Zhu
- Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science , Nanjing Normal University , Nanjing 210023 , China
| | - Leigang Shi
- Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science , Nanjing Normal University , Nanjing 210023 , China
| | - Jiang Yuan
- Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science , Nanjing Normal University , Nanjing 210023 , China
| | - Jian Shen
- Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science , Nanjing Normal University , Nanjing 210023 , China
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18
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Delgado JD, Surmaitis RL, Abou Shaheen S, Schlenoff JB. Engineering Thiolated Surfaces with Polyelectrolyte Multilayers. ACS APPLIED MATERIALS & INTERFACES 2019; 11:3524-3535. [PMID: 30620554 DOI: 10.1021/acsami.8b15514] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Interfaces bearing firmly attached thiol groups are useful for many applications requiring the versatile and facile chemistry of the -SH functionality. In this work, rugged ultrathin films were prepared on substrates using layer-by-layer assembly. The surface of these smooth films was capped with a co-polymer containing benzyl mercaptan units. The utility of this coating was illustrated by three applications. First, thiol-ene "click" chemistry was used to introduce the Arg-Gly-Asp (RGD) adhesive peptide sequence on a surface that otherwise resisted good adhesion of fibroblasts. This treatment promoted cell adhesion and spreading. Similar Michael addition chemistry was employed to attach poly(ethylene glycol) to the surface, which reduced fouling by (adhesion of) serum albumin. Finally, the affinity of gold for -SH was exploited by depositing a layer of gold nanoparticles on the thiolated surface or by evaporating a tenacious film of gold without using the classical chromium "primer" layer.
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Affiliation(s)
- Jose D Delgado
- Department of Chemistry and Biochemistry , The Florida State University , Tallahassee , Florida 32306 , United States
| | - Richard L Surmaitis
- Department of Chemistry and Biochemistry , The Florida State University , Tallahassee , Florida 32306 , United States
| | - Samir Abou Shaheen
- Department of Chemistry and Biochemistry , The Florida State University , Tallahassee , Florida 32306 , United States
| | - Joseph B Schlenoff
- Department of Chemistry and Biochemistry , The Florida State University , Tallahassee , Florida 32306 , United States
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19
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Ji HF, He C, Wang R, Fan X, Xiong L, Zhao WF, Zhao CS. Multifunctionalized polyethersulfone membranes with networked submicrogels to improve antifouling property, antibacterial adhesion and blood compatibility. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 96:402-411. [PMID: 30606548 DOI: 10.1016/j.msec.2018.11.047] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 09/23/2018] [Accepted: 11/26/2018] [Indexed: 01/24/2023]
Abstract
Intensive efforts have been employed in modifying biomedical membranes. Among them, blending is recognized as a simple method. However, the conventional blending materials commonly lead to an insufficient modification, which is mainly caused by the poor miscibility between the blending materials and the matrixes, the elution of the hydrophilic materials from the matrixes during the use and storage, and the insufficient surface enrichment of the blending materials. Aiming to solve the abovementioned disadvantages, we developed novel polyethersulfone/poly(acrylic acid-co-N-vinyl-2-pyrrolidone) networked submicrogels (PES/P(AA-VP) NSs), which were blended with PES to enhance the antifouling properties, antibacterial adhesion and haemocompatible properties of PES membranes. As results, the PES/P(AA-VP) NSs showed good miscibility with the PES matrix, and hydrophilic submicrogels would enrich onto the membrane surface during the phase inversion process due to the surface segregation. The entanglement between the PES matrix and the networked submicrogels would effectively limit the elution of the submicrogels. In conclusion, the modified PES membranes prepared by blending with the PES/P(AA-VP) NSs might draw great attention for the application in haemodialysis fields.
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Affiliation(s)
- Hai-Feng Ji
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Chao He
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Rui Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Xin Fan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Lian Xiong
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Wei-Feng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China.
| | - Chang-Sheng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
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20
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Lopez-Mila B, Alves P, Riedel T, Dittrich B, Mergulhão F, Rodriguez-Emmenegger C. Effect of shear stress on the reduction of bacterial adhesion to antifouling polymers. BIOINSPIRATION & BIOMIMETICS 2018; 13:065001. [PMID: 30141414 DOI: 10.1088/1748-3190/aadcc2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this work, two antifouling polymer brushes were tested at different shear stress conditions to evaluate their performance in reducing the initial adhesion of Escherichia coli. Assays were performed using a parallel plate flow chamber and a shear stress range between 0.005 and 0.056 Pa. These shear stress values are found in different locations in the human body where biomedical devices are placed. The poly(MeOEGMA) and poly(HPMA) brushes were characterized and it was shown that they can reduce initial adhesion up to 90% when compared to glass. Importantly, the performance of these surfaces was not affected by the shear stress, which is an indication that they do not collapse under this shear stress range. The brushes displayed a similar behavior despite the differences in their chemical composition and surface energy. Both surfaces have shown ultra-low adsorption of macromolecules from the medium when tested with relevant biological fluids (urine and serum). This indicates that these surfaces can potentially be used in biomedical devices to reduce initial bacterial colonization and eventually reduce biofilm formation on these devices.
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Affiliation(s)
- Betina Lopez-Mila
- Department of Chemistry and Physics of Surfaces and Biointerfaces, Institute of Macromolecular Chemistry, ASCR, v.v.i., Heyrovsky Sq. 2, 16206 Prague, Czechia. Both authors equally contributed to this work
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21
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Alhamdi J, Jacobs E, Gronowicz G, Benkirane-Jessel N, Hurley M, Kuhn L. Cell Type Influences Local Delivery of Biomolecules from a Bioinspired Apatite Drug Delivery System. MATERIALS 2018; 11:ma11091703. [PMID: 30217000 PMCID: PMC6163578 DOI: 10.3390/ma11091703] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 09/04/2018] [Accepted: 09/07/2018] [Indexed: 01/08/2023]
Abstract
Recently, the benefit of step-wise sequential delivery of fibroblast growth factor-2 (FGF-2) and bone morphogenetic protein-2 from a bioinspired apatite drug delivery system on mouse calvarial bone repair was demonstrated. The thicknesses of the nanostructured poly-l-Lysine/poly-l-Glutamic acid polyelectrolyte multilayer (PEM) and the bone-like apatite barrier layer that make up the delivery system, were varied. The effects of the structural variations of the coating on the kinetics of cell access to a cytotoxic factor delivered by the layered structure were evaluated. FGF-2 was adsorbed into the outer PEM, and cytotoxic antimycin-A (AntiA) was adsorbed to the substrate below the barrier layer to detect the timing of the cell access. While MC3T3-E1 osteoprogenitor cells accessed AntiA after three days, the RAW 264.7 macrophage access occurred within 4 h, unless the PEM layer was removed, in which case the results were reversed. Pits were created in the coating by the RAW 264.7 macrophages and initiated delivery, while the osteoprogenitor cell access to drugs occurred through a solution-mediated coating dissolution, at junctions between the islands of crystals. Macrophage-mediated degradation is therefore a mechanism that controls drug release from coatings containing bioinspired apatite.
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Affiliation(s)
- Jumana Alhamdi
- Department of Biomedical Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA.
| | - Emily Jacobs
- Department of Biomedical Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA.
| | - Gloria Gronowicz
- Department of Surgery, University of Connecticut Health, Farmington, CT 06030, USA.
| | - Nadia Benkirane-Jessel
- French National Institute of Health and Medical Research (INSERM), UMR 1260, Faculté de Médecine, University of Strasbourg, 67085 Strasbourg, France.
| | - Marja Hurley
- Department of Medicine, University of Connecticut Health, Farmington, CT 06030, USA.
| | - Liisa Kuhn
- Department of Biomedical Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA.
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22
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Xue Q, Liu XB, Lao YH, Wu LP, Wang D, Zuo ZQ, Chen JY, Hou J, Bei YY, Wu XF, Leong KW, Xiang H, Han J. Anti-infective biomaterials with surface-decorated tachyplesin I. Biomaterials 2018; 178:351-362. [PMID: 29778319 DOI: 10.1016/j.biomaterials.2018.05.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 05/03/2018] [Accepted: 05/04/2018] [Indexed: 10/16/2022]
Abstract
Implants decorated with antimicrobial peptides (AMPs) can prevent infection and reduce the risk of creating antibiotic resistance. Yet the restricted mobility of surficial AMP often compromises its activity. Here, we report a simple but effective strategy to allow a more flexible display of AMP on the biomaterial surface and demonstrate its efficacy for wound healing. The AMP, tachyplesin I (Tac), is tagged with the polyhydroxyalkanoate-granule-associated protein (PhaP) and immobilized on haloarchaea-produced poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBHV) via hydrophobic interaction. The PhaP-Tac coating effectively inhibits the growth of both Gram-negative and Gram-positive bacteria. It also increases the surface hydrophilicity to improve fibroblast proliferation in vitro, and accelerates wound healing by decreasing bacterial counts to below 105 CFU per gram of tissue in a deep-wound mouse model in vivo. Taken together, these findings demonstrate an effective strategy to realize the full potential of AMPs in imparting implants with an anti-microbial activity that is localized and potent.
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Affiliation(s)
- Qiong Xue
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China; College of Life Science, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Xiao-Bin Liu
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
| | - Yeh-Hsing Lao
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, United States
| | - Lin-Ping Wu
- Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, People's Republic of China
| | - Dong Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Zhen-Qiang Zuo
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China; College of Life Science, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Jun-Yu Chen
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China; College of Life Science, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Jing Hou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Yuan-Yuan Bei
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
| | - Xue-Fei Wu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Kam W Leong
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, United States
| | - Hua Xiang
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China; College of Life Science, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Jing Han
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China; College of Life Science, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China.
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23
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Szczepanowicz K, Kruk T, Świątek W, Bouzga AM, Simon CR, Warszyński P. Poly(l-glutamic acid)-g-poly(ethylene glycol) external layer in polyelectrolyte multilayer films: Characterization and resistance to serum protein adsorption. Colloids Surf B Biointerfaces 2018; 166:295-302. [PMID: 29604572 DOI: 10.1016/j.colsurfb.2018.03.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 03/06/2018] [Accepted: 03/17/2018] [Indexed: 11/28/2022]
Abstract
Formation of protein-resistant surfaces is a major challenge in the design of novel biomaterials and an important strategy to prevent protein adsorption is the formation of protein-resistant coatings. It can be achieved by proper modification of surfaces, e.g., by immobilization of hydrophilic polymers such as poly(ethylene glycol) (PEG). An appropriate method to immobilize PEG at charged surfaces is the adsorption of copolymers with PEG chains grafted onto polyelectrolyte backbone. The growing interest in the use of polyelectrolyte multilayer coatings in biomedical applications to improve biocompatibility and/or to prepare coating with antiadhesive properties has been the main reason for these studies. Therefore the aim was to produce protein resistant polyelectrolyte multilayer films. They were formed via the layer-by-layer approach, while their pegylation by the deposition of pegylated polyanion, PGA-g-PEG, as an external layer. The influence of PEG chain length and grafting density of PGA-g-PEG copolymers on the protein antiadhesive properties of pegylated polyelectrolyte multilayer films was investigated. To monitor the formation of pegylated and non-pegylated multilayer films, adsorption of the following proteins: HSA, Fibrinogen, and FBS were measured by quartz crystal microbalance (QCM - D). We found that protein adsorption onto all pegylated polyelectrolyte multilayers was significantly reduced in comparison to non-pegylated ones. Long-term performance tests confirmed the stability and the durability of the protein resistant properties of the pegylated multilayers. Antiadhesive properties of tested surfaces pegylated by PGA-g-PEG were compared to the available data for pegylated polycation PLL-g-PEG.
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Affiliation(s)
- Krzysztof Szczepanowicz
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, PL-30239 Krakow, Poland.
| | - Tomasz Kruk
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, PL-30239 Krakow, Poland
| | - Wiktoria Świątek
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, PL-30239 Krakow, Poland
| | - Aud M Bouzga
- SINTEF Material and Chemistry, Forskningsveien 1, N-0314 Oslo, Norway
| | - Christian R Simon
- SINTEF Material and Chemistry, Forskningsveien 1, N-0314 Oslo, Norway
| | - Piotr Warszyński
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, PL-30239 Krakow, Poland
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24
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Guo S, Kwek MY, Toh ZQ, Pranantyo D, Kang ET, Loh XJ, Zhu X, Jańczewski D, Neoh KG. Tailoring Polyelectrolyte Architecture To Promote Cell Growth and Inhibit Bacterial Adhesion. ACS APPLIED MATERIALS & INTERFACES 2018; 10:7882-7891. [PMID: 29437375 DOI: 10.1021/acsami.8b00666] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
An important challenge facing the application of implanted biomaterials for tissue engineering is the need to facilitate desirable tissue interactions with the implant while simultaneously inhibiting bacterial colonization, which can lead to implant-associated infection. In this study, we explore the relevance of the physical parameters of polyelectrolyte multilayers, such as surface charge, wettability, and stiffness, in tissue cell/surface and bacteria/surface interactions, and investigate the tuning of the multilayer architecture to differentially control such interactions. Polyions with different side-chain chemical structures were paired with polyethylenimine to assemble multilayers with parallel control over surface charge and wettability under controlled conditions. The multilayers can be successfully cross-linked to yield stiffer (the apparent Young's modulus was increased more than three times its original value) and more stable films while maintaining parallel control over surface charge and wettability. The initial adhesion and proliferation of 3T3 fibroblast cells were found to be strongly affected by surface charge and wettability on the non-cross-linked multilayers. On the other hand, these cells adhered and proliferated in a manner similar to those on the cross-linked multilayers (apparent Young's modulus ∼2 MPa), regardless of surface charge and wettability. In contrast, Staphylococcus aureus ( S. aureus) and Escherichia coli ( E. coli) adhesion was primarily controlled by surface charge and wettability on both cross-linked and non-cross-linked multilayers. In both cases, negative charge and hydrophilicity inhibited their adhesion. Thus, a surface coating with a relatively high degree of stiffness from covalent cross-linking coupled with negative surface charge and high wettability can serve as an efficient strategy to enhance host cell growth while resisting bacterial colonization.
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Affiliation(s)
- Shanshan Guo
- NUS Graduate School for Integrative Science and Engineering , National University of Singapore , Kent Ridge, 117576 , Singapore
| | - Min Yi Kwek
- Department of Chemical and Biomolecular Engineering , National University of Singapore , 4 Engineering Drive 4 , 119260 , Singapore
| | - Zi Qian Toh
- Department of Chemical and Biomolecular Engineering , National University of Singapore , 4 Engineering Drive 4 , 119260 , Singapore
| | - Dicky Pranantyo
- Department of Chemical and Biomolecular Engineering , National University of Singapore , 4 Engineering Drive 4 , 119260 , Singapore
| | - En-Tang Kang
- Department of Chemical and Biomolecular Engineering , National University of Singapore , 4 Engineering Drive 4 , 119260 , Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering , A*STAR (Agency for Science, Technology and Research , 2 Fusionopolis Way , 138634 , Singapore
- Department of Materials Science and Engineering , National University of Singapore , 9 Engineering Drive 1 , 117576 , Singapore
- Singapore Eye Research Institute , 11 Third Hospital Avenue , 168751 , Singapore
| | - Xiaoying Zhu
- Department of Environmental Science , Zhejiang University , Hangzhou 310058 , China
| | - Dominik Jańczewski
- Laboratory of Technological Processes, Faculty of Chemistry , Warsaw University of Technology , Noakowskiego 3 , 00-664 Warsaw , Poland
| | - Koon Gee Neoh
- NUS Graduate School for Integrative Science and Engineering , National University of Singapore , Kent Ridge, 117576 , Singapore
- Department of Chemical and Biomolecular Engineering , National University of Singapore , 4 Engineering Drive 4 , 119260 , Singapore
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25
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Bassegoda A, Ivanova K, Ramon E, Tzanov T. Strategies to prevent the occurrence of resistance against antibiotics by using advanced materials. Appl Microbiol Biotechnol 2018; 102:2075-2089. [PMID: 29392390 DOI: 10.1007/s00253-018-8776-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 01/04/2018] [Accepted: 01/06/2018] [Indexed: 01/26/2023]
Abstract
Drug resistance occurrence is a global healthcare concern responsible for the increased morbidity and mortality in hospitals, time of hospitalisation and huge financial loss. The failure of the most antibiotics to kill "superbugs" poses the urgent need to develop innovative strategies aimed at not only controlling bacterial infection but also the spread of resistance. The prevention of pathogen host invasion by inhibiting bacterial virulence and biofilm formation, and the utilisation of bactericidal agents with different mode of action than classic antibiotics are the two most promising new alternative strategies to overcome antibiotic resistance. Based on these novel approaches, researchers are developing different advanced materials (nanoparticles, hydrogels and surface coatings) with novel antimicrobial properties. In this review, we summarise the recent advances in terms of engineered materials to prevent bacteria-resistant infections according to the antimicrobial strategies underlying their design.
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Affiliation(s)
- Arnau Bassegoda
- Group of Molecular and Industrial Biotechnology, Department of Chemical Engineering, Universitat Politècnica de Catalunya, Terrassa, Spain
| | - Kristina Ivanova
- Group of Molecular and Industrial Biotechnology, Department of Chemical Engineering, Universitat Politècnica de Catalunya, Terrassa, Spain
| | - Eva Ramon
- Group of Molecular and Industrial Biotechnology, Department of Chemical Engineering, Universitat Politècnica de Catalunya, Terrassa, Spain
| | - Tzanko Tzanov
- Group of Molecular and Industrial Biotechnology, Department of Chemical Engineering, Universitat Politècnica de Catalunya, Terrassa, Spain.
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Qiu Y, Zhang N, An YH, Wen X. Biomaterial Strategies to Reduce Implant-Associated Infections. Int J Artif Organs 2018; 30:828-41. [DOI: 10.1177/039139880703000913] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Although the prophylaxis in controlling sterility within the operating room environment has been greatly improved, implant-associated infection is still one of the most serious complications in implant surgeries due to the existence of immune depression in the peri-implant area. The antibacterial ability of materials themselves logically becomes an important factor in preventing implant-associated infections. With the understanding of the pathogenesis of implant-associated infections, many approaches have been developed through providing an anti-adhesive surface, delivering antibacterial agents to disrupt cell-cell communication and preventing bacteria aggregation or biofilm formation, or killing bacteria directly (lysing the cell membrane). In this article, we review the current strategies in improving the antibacterial ability of materials to prevent implant infection and further present promising tactics in materials design and applications.
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Affiliation(s)
- Y. Qiu
- Clemson-MUSC Bioengineering Program, Department of Bioengineering, Clemson University, Charleston, South Carolina - USA
| | - N. Zhang
- Clemson-MUSC Bioengineering Program, Department of Bioengineering, Clemson University, Charleston, South Carolina - USA
- Department of Cell Biology and Anatomy, Medical University of South Carolina, Charleston, South Carolina - USA
| | - Y. H. An
- Department of Orthopedic Surgery, Medical University of South Carolina, Charleston, South Carolina - USA
| | - X. Wen
- Clemson-MUSC Bioengineering Program, Department of Bioengineering, Clemson University, Charleston, South Carolina - USA
- Department of Cell Biology and Anatomy, Medical University of South Carolina, Charleston, South Carolina - USA
- Department of Orthopedic Surgery, Medical University of South Carolina, Charleston, South Carolina - USA
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27
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Donath E, Vardanyan I, Meyer S, Murray RA, Moya SE, Navoyan Z, Arakelyan V. A typical diffusion monitored by flow cytometry: slow diffusion of small molecules in polyelectrolyte multilayers. NANOSCALE 2018; 10:765-772. [PMID: 29256567 DOI: 10.1039/c7nr08405f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
An innovative approach has been developed to measure small molecule diffusion in polyelectrolyte multilayers (PEMs) assembled on colloidal particles by means of flow cytometry (FACS). FACS allows changes in fluorescence emission as a function of time to be recorded per particle in a colloidal dispersion. Dithionite, S2O42-, diffusion in PEMs composed of polyallylamine hydrochloride (PAH) and poly styrene sulfonate (PSS) assembled on silica particles has been studied by recording the quenching of (7-nitrobenz-2-oxa-1,3-diazol-4yl)amino (NBD) labelled PAH layers by FACS. NBD is reduced when it encounters dithionite, and is therefore no longer fluorescent. The decay in fluorescence will be used to follow the kinetics of dithionite diffusion. The fluorescence decay curves show slow diffusion that does not follow classical Fickean law. However, by assuming that the diffusion coefficient is time dependent and follows an inverse power law in an atypical diffusion case, it was possible to obtain an excellent fit for the decay curves.
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Affiliation(s)
- E Donath
- Institute of Medical and Biophysics, University of Leipzig, Haertelstrasse 16-18, Leipzig, Germany
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28
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Albright V, Zhuk I, Wang Y, Selin V, van de Belt-Gritter B, Busscher HJ, van der Mei HC, Sukhishvili SA. Self-defensive antibiotic-loaded layer-by-layer coatings: Imaging of localized bacterial acidification and pH-triggering of antibiotic release. Acta Biomater 2017; 61:66-74. [PMID: 28803214 DOI: 10.1016/j.actbio.2017.08.012] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 07/22/2017] [Accepted: 08/08/2017] [Indexed: 10/19/2022]
Abstract
Self-defensive antibiotic-loaded coatings have shown promise in inhibiting growth of pathogenic bacteria adhering to biomaterial implants and devices, but direct proof that their antibacterial release is triggered by bacterially-induced acidification of the immediate environment under buffered conditions remained elusive. Here, we demonstrate that Staphylococcus aureus and Escherichia coli adhering to such coatings generate highly localized acidification, even in buffered conditions, to activate pH-triggered, self-defensive antibiotic release. To this end, we utilized chemically crosslinked layer-by-layer hydrogel coatings of poly(methacrylic acid) with a covalently attached pH-sensitive SNARF-1 fluorescent label for imaging, and unlabeled-antibiotic (gentamicin or polymyxin B) loaded coatings for antibacterial studies. Local acidification of the coatings induced by S. aureus and E. coli adhering to the coatings was demonstrated by confocal-laser-scanning-microscopy via wavelength-resolved imaging. pH-triggered antibiotic release under static, small volume conditions yielded high bacterial killing efficiencies for S. aureus and E. coli. Gentamicin-loaded films retained their antibacterial activity against S. aureus under fluid flow in buffered conditions. Antibacterial activity increased with the number of polymer layers in the films. Altogether, pH-triggered, self-defensive antibiotic-loaded coatings become activated by highly localized acidification in the immediate environment of an adhering bacterium, offering potential for clinical application with minimized side-effects. STATEMENT OF SIGNIFICANCE Polymeric coatings were created that are able to uptake and selectively release antibiotics upon stimulus by adhering bacteria in order to understand the fundamental mechanisms behind pH-triggered antibiotic release as a potential way to prevent biomaterial-associated infections. Through fluorescent imaging studies, this work importantly shows that adhering bacteria produce highly localized pH changes even in buffer. Accordingly such coatings only demonstrate antibacterial activity by antibiotic release in the presence of adhering bacteria. This is clinically important, because ad libitum releasing antibiotic coatings usually show a burst release and have often lost their antibiotic content when bacteria adhere.
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29
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Kameta N, Ding W, Dong J. Soft Nanotubes Derivatized with Short PEG Chains for Thermally Controllable Extraction and Separation of Peptides. ACS OMEGA 2017; 2:6143-6150. [PMID: 30023764 PMCID: PMC6044993 DOI: 10.1021/acsomega.7b00838] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 09/13/2017] [Indexed: 06/08/2023]
Abstract
By means of a two-step self-assembly process involving three components, including short poly(ethylene glycol) (PEG) chains, we produced two different types of molecular monolayer nanotubes: nanotubes densely functionalized with PEG chains on the outer surface and nanotubes densely functionalized with PEG chains in the nanochannel. Turbidity measurements and fluorescence spectroscopy with an environmentally responsive probe suggested that the PEG chains underwent dehydration when the nanotubes were heated above 44-57 °C and rehydration when they were cooled back to 25 °C. Dehydration of the exterior or interior PEG chains rendered them hydrophobic and thus able to effectively extract hydrophobic amino acids from the bulk solution. Rehydration of the PEG chains restored their hydrophilicity, thus allowing the extracted amino acids to be squeezed out into the bulk solutions. The nanotubes with exterior PEG chains exhibited selectivity for all of the hydrophobic amino acids, whereas the interior PEG chains were selective for hydrophobic amino acids with an aliphatic side chain over hydrophobic amino acids with an aromatic side chain. The higher selectivity of the latter system is attributable that the extraction and back-extraction processes involve encapsulation and transportation of the amino acids in the nanotube channel. As the result, the latter system was useful for separation of peptides that differed by only a single amino acid, whereas the former system showed no such separation ability.
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Affiliation(s)
- Naohiro Kameta
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science
and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Wuxiao Ding
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science
and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Jiuchao Dong
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science
and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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30
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Peng L, Chang L, Liu X, Lin J, Liu H, Han B, Wang S. Antibacterial Property of a Polyethylene Glycol-Grafted Dental Material. ACS APPLIED MATERIALS & INTERFACES 2017; 9:17688-17692. [PMID: 28513133 DOI: 10.1021/acsami.7b05284] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Dental materials often cause bacterial adhesion and promote bacterial biofilm formation, which brings a series of long-standing and significant problems in oral health. However, the current development of antibacterial research in dental devices is limited by the lack of materials endowed with good antibacterial properties against oral bacteria. Here, we present a new strategy for reducing the initial adhesion of bacterial on dental biomaterials by chemically bonding long-chain polyethylene glycol. Our work represents an important step toward solving the problem of bacterial accumulation on dental devices.
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Affiliation(s)
- Liying Peng
- Department of Orthodontics, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, and Beijing Key Laboratory of Digital Stomatology, Peking University , 22 Zhongguancun South Avenue, Haidian District, Beijing 100081, P. R. China
| | - Li Chang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and Department of Chemistry, Lanzhou University , Lanzhou 730000, P. R. China
| | - Xi Liu
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Jiuxiang Lin
- Department of Orthodontics, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, and Beijing Key Laboratory of Digital Stomatology, Peking University , 22 Zhongguancun South Avenue, Haidian District, Beijing 100081, P. R. China
| | - Hongliang Liu
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Bing Han
- Department of Orthodontics, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, and Beijing Key Laboratory of Digital Stomatology, Peking University , 22 Zhongguancun South Avenue, Haidian District, Beijing 100081, P. R. China
| | - Shutao Wang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
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31
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Xu T, Chi B, Gao J, Chu M, Fan W, Yi M, Xu H, Mao C. Novel electrochemical immune sensor based on Hep-PGA-PPy nanoparticles for detection of α-Fetoprotein in whole blood. Anal Chim Acta 2017; 977:36-43. [PMID: 28577596 DOI: 10.1016/j.aca.2017.04.045] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 04/17/2017] [Accepted: 04/21/2017] [Indexed: 01/21/2023]
Abstract
A simple and accurate immune sensor for quantitative detection of α-Fetoprotein (AFP) was developed based on the immobilization of antigen on the surface of Hep-PGA-PPy nanoparticles modified glassy carbon electrodes (GCE). The obtained Hep-PGA-PPy nanoparticles were characterized by fourier transform infrared (FT-IR) spectra and transmission electron microscopy (TEM). And the blood compatibility of Hep-PGA-PPy nanoparticles was investigated by in vitro coagulation tests, hemolysis assay and whole blood adhesion tests. Combining the conductive property of polypyrrole (PPy) and the biocompatibility of heparin (Hep), the Hep-PGA-PPy nanoparticles could improve not only the anti-biofouling effect the electrode, but also improved the electrochemical properties of the immune sensor. Under optimal conditions, the proposed immune sensor could detect AFP in a linear range from 0.1 to 100 ng mL-1 with a detection limit of 0.099 ng mL-1 at the signal-to-noise ratio of 3, and it also possessed good reproducibility and storage stability. Furthermore, the detection of AFP in five human blood samples also showed satisfactory accuracy with low relative errors. Thus, the developed immune sensor which showed acceptable reproducibility, selectivity, stability and accuracy could be potentially used for the detection of whole blood samples directly.
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Affiliation(s)
- Tingting Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China; National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Bo Chi
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Jian Gao
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Meilin Chu
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Wenlu Fan
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Meihui Yi
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Hong Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China.
| | - Chun Mao
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
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32
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Liu G, Li K, Luo Q, Wang H, Zhang Z. PEGylated chitosan protected silver nanoparticles as water-borne coating for leather with antibacterial property. J Colloid Interface Sci 2017; 490:642-651. [DOI: 10.1016/j.jcis.2016.11.103] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 11/29/2016] [Accepted: 11/29/2016] [Indexed: 10/20/2022]
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33
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Elżbieciak-Wodka M, Kolasińska-Sojka M, Warszyński P. Effect of mono- and divalent ions on the formation and permeability of polyelectrolyte multilayer films. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.02.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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34
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Evaluation of the role of substrate and albumin on Pseudomonas aeruginosa biofilm morphology through FESEM and FTIR studies on polymeric biomaterials. Prog Biomater 2017; 6:27-38. [PMID: 28155216 PMCID: PMC5433955 DOI: 10.1007/s40204-017-0061-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 01/05/2017] [Indexed: 12/15/2022] Open
Abstract
Bacterial biofilms pose the greatest challenge to implant surgeries leading to device-related infections and implant failure. Our present study aims at monitoring the variation in the biofilm architecture of a clinically isolated strain and ATCC 27853 strain of Pseudomonas aeruginosa on two polymeric biomaterials, used in implants. The perspective of our study is to recognize the potential of these two biomaterials to create biofilm infections and develop the understanding regarding their limitations of use and handle patients with this deeper insight. The final goal, however, is an accurate interpretation of substrate-microbe interactions in the two biomaterials, which will provide us the knowledge of possible surface modifications to develop of an efficacious anti-biofilm therapy for deterring implant infections. The reference strain ATCC 27853 and a clinical isolate of P. aeruginosa collected from urinary catheters of patients suffering from urinary tract infections, have been used as microbes while clinical grades of polypropylene and high density polyethylene, have been used as 'substrates' for biofilm growth. The variation in the nature of the 'substrate' and 'conditioning layer' of BSA have been found to affect the biofilm architecture as well as the physiology of the biofilm-forming bacteria, accompanied by an alteration in the nature and volume of EPS (extracellular polysaccharide) matrices.
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35
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De Zoysa GH, Sarojini V. Feasibility Study Exploring the Potential of Novel Battacin Lipopeptides as Antimicrobial Coatings. ACS APPLIED MATERIALS & INTERFACES 2017; 9:1373-1383. [PMID: 27992168 DOI: 10.1021/acsami.6b15859] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Colonization of medical implant surfaces by pathogenic microorganisms causes implant failure and undermines their clinical applicability. Alarming increase in multidrug-resistant bacteria poses serious concerns with the use of medical implants. Antimicrobial peptides (AMPs) that form part of the innate immune system in all forms of life are attractive alternatives to conventional antibiotics to treat multidrug-resistant bacterial biofilms. The aim of this study was to assess the in vitro antibacterial potency of our recently discovered lipopeptides from the battacin family upon immobilization to various surfaces. To achieve this, glass, silicon, and titanium surfaces were functionalized through silanization followed by addition of the heterobifunctional cross-linker, succinimidyl-[N-maleimidopropionamido]-poly(ethylene glycol) ester to generate maleimide-functionalized surfaces. The lipopeptide, GZ3.27, with an added N-terminal cysteine was covalently coupled to the surfaces via a thioether bond through a Michael-type addition between the cysteine sulfhydryl group and the maleimide moiety. Success of surface immobilization and antimicrobial activity of the coated surfaces was assessed using water contact angle measurements, X-ray photoelectron spectroscopy, ellipsometry, scanning electron microscopy, colony forming unit assays and biofilm analysis. The lipopeptide-coated surfaces caused significant damage to the cellular envelop of Pseudomonas aeruginosa (P. aeruginosa) and Escherichia coli (E. coli) upon contact and prevented surface colonization by P. aeruginosa and E. coli biofilms. The lipopeptides investigated in this study were not hemolytic to mouse blood cells in solution. Findings from this study indicate that these lipopeptides have the potential to be developed as promising antimicrobial coatings on medical implants.
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Affiliation(s)
- Gayan Heruka De Zoysa
- School of Chemical Sciences, The University of Auckland , Private Bag 92019, Auckland, New Zealand
| | - Vijayalekshmi Sarojini
- School of Chemical Sciences, The University of Auckland , Private Bag 92019, Auckland, New Zealand
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36
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Bazylińska U, Pietkiewicz J, Rossowska J, Chodaczek G, Gamian A, Wilk KA. Polyelectrolyte Oil-Core Nanocarriers for Localized and Sustained Delivery of Daunorubicin to Colon Carcinoma MC38 Cells: The Case of Polysaccharide Multilayer Film in Relation to PEG-ylated Shell. Macromol Biosci 2017; 17. [DOI: 10.1002/mabi.201600356] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 12/04/2016] [Indexed: 12/22/2022]
Affiliation(s)
- Urszula Bazylińska
- Department of Organic and Pharmaceutical Technology; Faculty of Chemistry; Wroclaw University of Science and Technology; Wybrzeze Wyspianskiego 27 50-370 Wroclaw Poland
| | - Jadwiga Pietkiewicz
- Department of Medical Biochemistry; Medical University of Wroclaw; Chalubinskiego 10 50-368 Wroclaw Poland
| | - Joanna Rossowska
- Institute of Immunology and Experimental Therapy Polish Academy of Sciences; Rudolfa Weigla 12 53-114 Wroclaw Poland
| | - Grzegorz Chodaczek
- Wroclaw Research Centre EIT+; Confocal Microscopy Laboratory; Stablowicka 147 54-066 Wroclaw Poland
| | - Andrzej Gamian
- Department of Medical Biochemistry; Medical University of Wroclaw; Chalubinskiego 10 50-368 Wroclaw Poland
| | - Kazimiera A. Wilk
- Department of Organic and Pharmaceutical Technology; Faculty of Chemistry; Wroclaw University of Science and Technology; Wybrzeze Wyspianskiego 27 50-370 Wroclaw Poland
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37
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Ji HF, Xiong L, Shi ZQ, He M, Zhao WF, Zhao CS. Engineering of hemocompatible and antifouling polyethersulfone membranes by blending with heparin-mimicking microgels. Biomater Sci 2017; 5:1112-1121. [DOI: 10.1039/c7bm00196g] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enhancing the hemocompatible and antifouling property of polyethersulfone membranes by blending with heparin-mimicking microgels.
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Affiliation(s)
- Hai-feng Ji
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Lian Xiong
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Zhen-qiang Shi
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Min He
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Wei-feng Zhao
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Chang-sheng Zhao
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
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38
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Etienne O, Picart C, Taddei C, Keller P, Hubsch E, Schaaf P, Voegel JC, Haikel Y, Ogier JA, Egles C. Polyelectrolyte Multilayer Film Coating and Stability at the Surfaces of Oral Prosthesis Base Polymers: an in vitro and in vivo Study. J Dent Res 2016; 85:44-8. [PMID: 16373679 DOI: 10.1177/154405910608500107] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A new type of coating involving a layer-by-layer technique has been recently reported. This coating is composed of a polyelectrolyte multilayer film that confers specific properties on surfaces to which it is applied. Here, we studied the applicability of such a technique to the coating of oral prostheses, by first testing the construction of polyelectrolyte multilayer films on several polymers used in oral prosthesis bases, and, subsequently, by studying the stability of these coatings in vitro, in human saliva, and in vivo in a rat model. We demonstrated that the multilayered films are able to coat the surfaces of all tested polymers completely, thus increasing their wettability. We also showed that saliva does not degrade the film after 7 days in vitro and after 4 days in vivo. Taken together, our results establish that the layer-by-layer technique is suitable for the coating of oral devices.
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Affiliation(s)
- O Etienne
- Institut National de la Santé et de la Recherche Médicale, Unité 595, 11, rue Humann, 67085 Strasbourg Cedex, France
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39
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Rajesh S, Zhao Y, Fong H, Menkhaus TJ. Polyacrylonitrile nanofiber membranes modified with ionically crosslinked polyelectrolyte multilayers for the separation of ionic impurities. NANOSCALE 2016; 8:18376-18389. [PMID: 27766338 DOI: 10.1039/c6nr06295d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nanofiltration membranes were prepared by forming multilayers of branched polyethylenimine (BPEI) and polyacrylic acid (PAA) on a polyacrylonitrile (PAN) nanofibrous mat by layer-by-layer (LbL) assembly. The degree of ionization (DI) of PAA, estimated using FTIR spectra both in the absence and presence of added salt, was shown to have a strong influence on the BPEI/PAA film growth. BPEI/PAA multilayers grew exponentially when the DI of PAA was less than 30%, or when the pH of PAA during LbL formation was less than 3.5. Subsequently, BPEI/PAA multilayers were formed on the PAN nanofiber mats by depositing the polyelectrolytes at the experimental conditions that favored maximum film growth. The separation layer formed with 15 bilayers of BPEI/PAA has a thickness of 1100 nm. PAA ionization was favored within the BPEI/PAA multilayers due to the presence of abundant amine groups in BPEI, and as a result, a strong negative charge was seen for PAN nanofibrous membranes for solution conditions above pH 4.5. Nanofiber membranes modified with 15 bilayers of BPEI/PAA multilayers at an applied pressure of 4 bar had a pure water flux of 19.7 Lm-2 h-1 and a MgSO4 rejection of 98.7%. This performance represents 1.6 times higher flux and 1.1 times higher salt rejection than the multilayers formed on a conventional asymmetric polymeric support. The higher separation and higher flux capabilities of BPEI/PAA multilayer modified PAN nanofiber membranes was due to the combined effect of high charge density and high porosity of the nanofiber membranes.
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Affiliation(s)
- Sahadevan Rajesh
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA.
| | - Yong Zhao
- Department of Chemistry and Applied Biological Sciences, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA
| | - Hao Fong
- Department of Chemistry and Applied Biological Sciences, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA
| | - Todd J Menkhaus
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA.
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40
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Rashid MI, Mujawar LH, Rehan ZA, Qari H, Zeb J, Almeelbi T, Ismail IM. One-step synthesis of silver nanoparticles using Phoenix dactylifera leaves extract and their enhanced bactericidal activity. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.09.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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41
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Onat B, Bütün V, Banerjee S, Erel-Goktepe I. Bacterial anti-adhesive and pH-induced antibacterial agent releasing ultra-thin films of zwitterionic copolymer micelles. Acta Biomater 2016; 40:293-309. [PMID: 27107517 DOI: 10.1016/j.actbio.2016.04.033] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 04/15/2016] [Accepted: 04/19/2016] [Indexed: 12/22/2022]
Abstract
UNLABELLED We report on preparation of substrates with dual function coatings, i.e. bacterial anti-adhesive and antibacterial agent releasing polymer films of zwitterionic block copolymer micelles (BCMs). BCMs were obtained by pH-induced self-assembly of poly[3-dimethyl (methacryloyloxyethyl) ammonium propane sulfonate-b-2-(diisopropylamino)ethyl methacrylate] (βPDMA-b-PDPA), resulting in BCMs with zwitterionic βPDMA-coronae and pH-responsive PDPA-core. These zwitterionic BCMs were then used as building blocks to construct mono- and multi-layer films. We found that the number of layers in the film was critical for the anti-adhesive property and 3-layer films were the most anti-adhesive against a model Gram-positive bacterium, Staphylococcus aureus. Antibacterial activity could be introduced to the films by loading Triclosan into βPDMA-b-PDPA micelles. Triclosan containing films were effective against Triclosan-sensitive Staphylococcus aureus specifically at moderately acidic conditions due to pH-induced disintegration of the micellar core blocks and release of Triclosan from the surface. Three-layer films also exhibited anti-adhesive property at physiological pH against a model Gram-negative bacterium, Escherichia coli. At moderately acidic pH, the coatings showed a contact antibacterial effect against an isolate of Escherichia coli with low sensitivity to Triclosan only when micellar cores were loaded with Triclosan. Such dual function films can be promising to combat biofouling at the non-homogeneous and/or defective parts of an anti-adhesive coating. Moreover, considering the moderately acidic conditions around an infection site, these multilayers can be advantageous due to their property of pH-induced antibacterial agent release. STATEMENT OF SIGNIFICANCE This study presents preparation of substrates with dual function ultra-thin coatings of zwitterionic block copolymer micelles which show bacterial anti-adhesive properties against a Gram-positive and a Gram-negative bacterium. Such coatings are also capable of releasing antibacterial compounds in response to pH changes. Films were prepared by self-assembly of polymers at the surface. Our findings showed that zwitterionic micellar coronae introduced bacterial anti-adhesive property to the films, whereas pH-responsive micellar cores enabled release of an antibacterial agent from the surface at acidic pH. Considering the moderately acidic conditions around an infection site, such multilayers can be promising for the coating of implants/medical devices.
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Silva JM, Reis RL, Mano JF. Biomimetic Extracellular Environment Based on Natural Origin Polyelectrolyte Multilayers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:4308-42. [PMID: 27435905 DOI: 10.1002/smll.201601355] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 06/15/2016] [Indexed: 05/23/2023]
Abstract
Surface modification of biomaterials is a well-known approach to enable an adequate biointerface between the implant and the surrounding tissue, dictating the initial acceptance or rejection of the implantable device. Since its discovery in early 1990s layer-by-layer (LbL) approaches have become a popular and attractive technique to functionalize the biomaterials surface and also engineering various types of objects such as capsules, hollow tubes, and freestanding membranes in a controllable and versatile manner. Such versatility enables the incorporation of different nanostructured building blocks, including natural biopolymers, which appear as promising biomimetic multilayered systems due to their similarity to human tissues. In this review, the potential of natural origin polymer-based multilayers is highlighted in hopes of a better understanding of the mechanisms behind its use as building blocks of LbL assembly. A deep overview on the recent progresses achieved in the design, fabrication, and applications of natural origin multilayered films is provided. Such films may lead to novel biomimetic approaches for various biomedical applications, such as tissue engineering, regenerative medicine, implantable devices, cell-based biosensors, diagnostic systems, and basic cell biology.
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Affiliation(s)
- Joana M Silva
- 3Bs Research Group-Biomaterials Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark - Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory Braga/Guimarães, Portugal
| | - Rui L Reis
- 3Bs Research Group-Biomaterials Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark - Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory Braga/Guimarães, Portugal
| | - João F Mano
- 3Bs Research Group-Biomaterials Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark - Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory Braga/Guimarães, Portugal
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An investigation of the antibacterial ability and cytotoxicity of a novel cu-bearing 317L stainless steel. Sci Rep 2016; 6:29244. [PMID: 27385507 PMCID: PMC4935851 DOI: 10.1038/srep29244] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 06/14/2016] [Indexed: 11/08/2022] Open
Abstract
In order to solve the challenging problem of microbial infections caused by microorganisms on medical implants, it is imperative to develop novel antimicrobial biomaterials. This work demonstrated that 317L-Cu stainless steel (SS), created by adding copper through a solution and aging heat treatment process, exhibited good antibacterial properties against staphylococcus aureus, achieving 2 log reduction of planktonic cells after 5 days of incubation. In this study, the antibacterial test was performed using the plate count method, the fluorescence cell staining method and the quantitative polymerase chain reaction (qPCR) method. It is well known that a high concentration of copper ion can lead to cytotoxicity. This work explored the cytotoxicity of 317L-Cu SS through real-time cell analysis (RTCA). Experimental results demonstrated that the 317L-Cu SS possessed a satisfactory antibacterial ability against S. aureus, and the antibacterial rate based on the reduction of sessile cell count reached 98.3% after 24-hour treatment. The bacterial adhesion and the biofilm thickness were considerably reduced by the 317L-Cu SS. The results of RTCA suggested that 317L-Cu SS did not introduce cytotoxicity to mouse cells, indicating its suitability as a medical implant material.
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Sardella E, Palumbo F, Camporeale G, Favia P. Non-Equilibrium Plasma Processing for the Preparation of Antibacterial Surfaces. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E515. [PMID: 28773637 PMCID: PMC5456949 DOI: 10.3390/ma9070515] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 06/12/2016] [Accepted: 06/20/2016] [Indexed: 12/19/2022]
Abstract
Non-equilibrium plasmas offer several strategies for developing antibacterial surfaces that are able to repel and/or to kill bacteria. Due to the variety of devices, implants, and materials in general, as well as of bacteria and applications, plasma assisted antibacterial strategies need to be tailored to each specific surface. Nano-composite coatings containing inorganic (metals and metal oxides) or organic (drugs and biomolecules) compounds can be deposited in one step, and used as drug delivery systems. On the other hand, functional coatings can be plasma-deposited and used to bind antibacterial molecules, for synthesizing surfaces with long lasting antibacterial activity. In addition, non-fouling coatings can be produced to inhibit the adhesion of bacteria and reduce the formation of biofilm. This paper reviews plasma-based strategies aimed to reduce bacterial attachment and proliferation on biomedical materials and devices, but also onto materials used in other fields. Most of the activities described have been developed in the lab of the authors.
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Affiliation(s)
- Eloisa Sardella
- Istituto di Nanotecnologia, Consiglio Nazionale delle Ricerche, Via Orabona 4, 70126 Bari, Italy.
| | - Fabio Palumbo
- Istituto di Nanotecnologia, Consiglio Nazionale delle Ricerche, Via Orabona 4, 70126 Bari, Italy.
| | - Giuseppe Camporeale
- Dipartimento di Chimica Università degli Studi di Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy.
| | - Pietro Favia
- Istituto di Nanotecnologia, Consiglio Nazionale delle Ricerche, Via Orabona 4, 70126 Bari, Italy.
- Dipartimento di Chimica Università degli Studi di Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy.
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Controlling cell adhesion using layer-by-layer approaches for biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 70:1163-1175. [PMID: 27772718 DOI: 10.1016/j.msec.2016.03.074] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 03/16/2016] [Accepted: 03/21/2016] [Indexed: 12/11/2022]
Abstract
Controlling the adhesion of mammalian and bacterial cells at the interfaces between synthetic materials and biological environments is a real challenge in the biomedical fields such as tissue engineering, antibacterial coating, implantable biomaterials and biosensors. The surface properties of materials are known to profoundly influence the adhesion processes. To mediate the adhesion processes, polymeric coatings have been used to functionalize surfaces to introduce diverse physicochemical properties. The polyelectrolyte multilayer films built via the layer-by-layer (LbL) method, introduced by Moehwald, Decher, and Lvov 20years ago, has led to significant developments ranging from the fundamental understanding of cellular processes to controlling cell adhesion for biomedical applications. In this review, we focus our attention on the modification of surface physicochemical properties, using the LbL approach, to construct films which can either promote or inhibit mammalian/bacterial cell adhesion. We also discuss the emerging field of multifunctional surfaces capable of responding to specific cellular activity but being inert to the others.
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Herrera González AM, Caldera Villalobos M, García-Serrano J, Peláez Cid AA. Polyelectrolytes with sulfonic acid groups useful in the synthesis and stabilization of Au and Ag nanoparticles. Des Monomers Polym 2016. [DOI: 10.1080/15685551.2016.1152543] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Xia Y, Cheng C, Wang R, He C, Ma L, Zhao C. Construction of microgels embedded robust ultrafiltration membranes for highly effective bioadhesion resistance. Colloids Surf B Biointerfaces 2016; 139:199-210. [DOI: 10.1016/j.colsurfb.2015.12.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 11/18/2015] [Accepted: 12/09/2015] [Indexed: 01/22/2023]
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Junthip J, Tabary N, Chai F, Leclercq L, Maton M, Cazaux F, Neut C, Paccou L, Guinet Y, Staelens JN, Bria M, Landy D, Hédoux A, Blanchemain N, Martel B. Layer-by-layer coating of textile with two oppositely charged cyclodextrin polyelectrolytes for extended drug delivery. J Biomed Mater Res A 2016; 104:1408-24. [DOI: 10.1002/jbm.a.35674] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 01/25/2016] [Accepted: 01/29/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Jatupol Junthip
- Université Lille 1, Unité Matériaux Et Transformations (UMET) UMR CNRS 8207; Villeneuve D'ascq France
| | - Nicolas Tabary
- Université Lille 1, Unité Matériaux Et Transformations (UMET) UMR CNRS 8207; Villeneuve D'ascq France
| | - Feng Chai
- INSERM U1008, Controlled Drug Delivery Systems and Biomaterials; Lille France
| | - Laurent Leclercq
- Université De Montpellier, Institut Des Biomolécules Max Mousseron (IBMM), UMR CNRS 5247; Montpellier France
| | - Mickael Maton
- INSERM U1008, Controlled Drug Delivery Systems and Biomaterials; Lille France
| | - Frederic Cazaux
- Université Lille 1, Unité Matériaux Et Transformations (UMET) UMR CNRS 8207; Villeneuve D'ascq France
| | - Christel Neut
- Inserm U995-Team 1, Faculté Des Sciences Pharmaceutiques Et Biologiques; Lille France
| | - Laurent Paccou
- Université Lille 1, Unité Matériaux Et Transformations (UMET) UMR CNRS 8207; Villeneuve D'ascq France
| | - Yannick Guinet
- Université Lille 1, Unité Matériaux Et Transformations (UMET) UMR CNRS 8207; Villeneuve D'ascq France
| | - Jean-Noel Staelens
- Université Lille 1, Unité Matériaux Et Transformations (UMET) UMR CNRS 8207; Villeneuve D'ascq France
| | - Marc Bria
- Université Lille 1, Centre Commun De Mesures RMN; Villeneuve D'ascq France
| | - David Landy
- Université Du Littoral Côte D'opale, UCEIV; Dunkerque France
| | - Alain Hédoux
- Université Lille 1, Unité Matériaux Et Transformations (UMET) UMR CNRS 8207; Villeneuve D'ascq France
| | - Nicolas Blanchemain
- INSERM U1008, Controlled Drug Delivery Systems and Biomaterials; Lille France
| | - Bernard Martel
- Université Lille 1, Unité Matériaux Et Transformations (UMET) UMR CNRS 8207; Villeneuve D'ascq France
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Encapsulation of clozapine in polymeric nanocapsules and its biological effects. Colloids Surf B Biointerfaces 2016; 140:342-352. [PMID: 26774571 DOI: 10.1016/j.colsurfb.2015.12.044] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 12/04/2015] [Accepted: 12/22/2015] [Indexed: 12/22/2022]
Abstract
Clozapine is an effective atypical antipsychotic drug that unfortunately exhibits poor oral bioavailability. Moreover, the clinical use of the compound is limited because of its numerous unfavorable and unsafe side effects. Therefore, the aim of the present study was the development of a new nanocarrier for a more effective clozapine delivery. Here, clozapine was encapsulated into polymeric nanocapsules (NCs). Polyelectrolyte multilayer shells were constructed by the technique of sequential adsorption of polyelectrolytes (LbL) using biocompatible polyanion PGA (Poly-L-glutamic acid, sodium salt) and polycation PLL (poly-L-lysine) on clozapine-loaded nanoemulsion cores. Pegylated external layers were prepared using PGA-g-PEG (PGA grafted by PEG (polyethylene glycol)). Clozapine was successfully loaded into the PLL-PGA nanocarriers (CLO-NCs) with an average size of 100 nm. In vitro analysis of the interactions of the CLO-NCs with the cells of the mononuclear phagocytic system (MPS) was conducted. Cell biocompatibility, phagocytosis potential, and cellular uptake were studied. Additionally, the biodistribution and behavioral effects of the encapsulated clozapine were also studied. The results indicate that surface modified (by PEG grafting) polymeric PLL-PGA CLO-NCs are very promising nanovehicles for improving clozapine delivery.
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Farkas E, Patko D, Khanh NQ, Toth E, Vonderviszt F, Horvath R. Self-assembly and structure of flagellin–polyelectrolyte composite layers: polyelectrolyte induced flagellar filament formation during the alternating deposition process. RSC Adv 2016. [DOI: 10.1039/c6ra19010c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
This study first reveals a new type of linearly growing polyelectrolyte multilayer buildup mechanism, when one of the components (PAH) induces the self-assembly of the oppositely charged component (flagellin), creating a filamentous nanostructured coating.
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Affiliation(s)
- Eniko Farkas
- Nanobiosensorics Laboratory
- Institute for Technical Physics and Materials Science
- MTA EK MFA
- Budapest
- Hungary
| | - Daniel Patko
- Nanobiosensorics Laboratory
- Institute for Technical Physics and Materials Science
- MTA EK MFA
- Budapest
- Hungary
| | - Nguyen Quoc Khanh
- MEMS Laboratory
- Institute for Technical Physics and Materials Science
- Microtechnology Group
- MTA EK MFA
- Budapest
| | - Eva Toth
- Doctoral School of Molecular and Nanotechnologies
- Faculty of Information Technology
- University of Pannonia
- Hungary
- Bio-Nanosystems Laboratory
| | - Ferenc Vonderviszt
- Nanobiosensorics Laboratory
- Institute for Technical Physics and Materials Science
- MTA EK MFA
- Budapest
- Hungary
| | - Robert Horvath
- Nanobiosensorics Laboratory
- Institute for Technical Physics and Materials Science
- MTA EK MFA
- Budapest
- Hungary
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