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Spencer P, Ye Q, Misra A, Chandler JR, Cobb CM, Tamerler C. Engineering peptide-polymer hybrids for targeted repair and protection of cervical lesions. FRONTIERS IN DENTAL MEDICINE 2022; 3. [PMID: 37153688 PMCID: PMC10162700 DOI: 10.3389/fdmed.2022.1007753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
By 2060, nearly 100 million people in the U.S. will be over age 65 years. One-third of these older adults will have root caries, and nearly 80% will have dental erosion. These conditions can cause pain and loss of tooth structure that interfere with eating, speaking, sleeping, and quality of life. Current treatments for root caries and dental erosion have produced unreliable results. For example, the glass-ionomer-cement or composite-resin restorations used to treat these lesions have annual failure rates of 44% and 17%, respectively. These limitations and the pressing need to treat these conditions in the aging population are driving a focus on microinvasive strategies, such as sealants and varnishes. Sealants can inhibit caries on coronal surfaces, but they are ineffective for root caries. For healthy, functionally independent elders, chlorhexidine varnish applied every 3 months inhibits root caries, but this bitter-tasting varnish stains the teeth. Fluoride gel inhibits root caries, but requires prescriptions and daily use, which may not be feasible for some older patients. Silver diamine fluoride can both arrest and inhibit root caries but stains the treated tooth surface black. The limitations of current approaches and high prevalence of root caries and dental erosion in the aging population create an urgent need for microinvasive therapies that can: (a) remineralize damaged dentin; (b) inhibit bacterial activity; and (c) provide durable protection for the root surface. Since cavitated and non-cavitated root lesions are difficult to distinguish, optimal approaches will treat both. This review will explore the multi-factorial elements that contribute to root surface lesions and discuss a multi-pronged strategy to both repair and protect root surfaces. The strategy integrates engineered peptides, novel polymer chemistry, multi-scale structure/property characterization and predictive modeling to develop a durable, microinvasive treatment for root surface lesions.
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Alvisi N, Zheng C, Lokker M, Boekestein V, de Haas R, Albada B, de Vries R. Design of Polypeptides Self-Assembling into Antifouling Coatings: Exploiting Multivalency. Biomacromolecules 2022; 23:3507-3516. [PMID: 35952369 PMCID: PMC9472226 DOI: 10.1021/acs.biomac.2c00170] [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] [Indexed: 11/29/2022]
Abstract
We propose to exploit multivalent binding of solid-binding peptides (SBPs) for the physical attachment of antifouling polypeptide brushes on solid surfaces. Using a silica-binding peptide as a model SBP, we find that both tandem-repeated SBPs and SBPs repeated in branched architectures implemented via a multimerization domain work very well to improve the binding strength of polypeptide brushes, as compared to earlier designs with a single SBP. At the same time, for many of the designed sequences, either the solubility or the yield of recombinant production is low. For a single design, with the domain structure B-M-E, both solubility and yield of recombinant production were high. In this design, B is a silica-binding peptide, M is a highly thermostable, de novo-designed trimerization domain, and E is a hydrophilic elastin-like polypeptide. We show that the B-M-E triblock polypeptide rapidly assembles into highly stable polypeptide brushes on silica surfaces, with excellent antifouling properties against high concentrations of serum albumin. Given that SBPs attaching to a wide range of materials have been identified, the B-M-E triblock design provides a template for the development of polypeptides for coating many other materials such as metals or plastics.
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Affiliation(s)
- Nicolò Alvisi
- Laboratory of Physical Chemistry and Soft Matter, Wageningen University & Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Chuanbao Zheng
- Laboratory of Physical Chemistry and Soft Matter, Wageningen University & Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Meike Lokker
- Laboratory of Physical Chemistry and Soft Matter, Wageningen University & Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Victor Boekestein
- Laboratory of Physical Chemistry and Soft Matter, Wageningen University & Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Robbert de Haas
- Laboratory of Physical Chemistry and Soft Matter, Wageningen University & Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Bauke Albada
- Laboratory of Organic Chemistry, Wageningen University & Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Renko de Vries
- Laboratory of Physical Chemistry and Soft Matter, Wageningen University & Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
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Sen S, Thaker A, Sirajudeen L, Williams D, Nannenga BL. Protein-Nanoparticle Complex Structure Determination by Cryo-Electron Microscopy. ACS APPLIED BIO MATERIALS 2022; 5:4696-4700. [PMID: 35587230 DOI: 10.1021/acsabm.2c00130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Methods that allow the study of the structure of proteins in complex with nanomaterials promise to enhance our understanding of how biological molecules interface with inorganic materials. We used single-particle cryo-electron microscopy (cryo-EM) to demonstrate the potential for cryo-EM analysis to reveal structural details of protein-nanoparticle complexes. Two protein-nanomaterial complexes, namely, GroEL bound to platinum nanoparticles (GroEL-PtNP) and ferritin bound to an iron oxide nanoparticle, were used as model samples. For the GroEL-PtNP complex, a final reconstruction was obtained to 3.93 Å, which allowed us to fit the atomic model of GroEL into the resulting map. This sets the stage for future work and improvements on the use of cryo-EM for the study of protein-nanomaterial complexes.
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Affiliation(s)
- Sagnik Sen
- Chemical Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe 85287, Arizona, United States
- Biodesign Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, 727 East Tyler Street, Tempe 85287, Arizona, United States
| | - Amar Thaker
- Chemical Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe 85287, Arizona, United States
- Biodesign Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, 727 East Tyler Street, Tempe 85287, Arizona, United States
| | - Luqmanal Sirajudeen
- Chemical Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe 85287, Arizona, United States
- Biodesign Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, 727 East Tyler Street, Tempe 85287, Arizona, United States
| | - Dewight Williams
- John M. Cowley Center for High Resolution Electron Microscopy, Arizona State University, Tempe 85281, Arizona, United States
| | - Brent L Nannenga
- Chemical Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe 85287, Arizona, United States
- Biodesign Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, 727 East Tyler Street, Tempe 85287, Arizona, United States
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4
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Sarikaya R, Song L, Yuca E, Xie SX, Boone K, Misra A, Spencer P, Tamerler C. Bioinspired multifunctional adhesive system for next generation bio-additively designed dental restorations. J Mech Behav Biomed Mater 2021; 113:104135. [PMID: 33160267 PMCID: PMC8101502 DOI: 10.1016/j.jmbbm.2020.104135] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 07/17/2020] [Accepted: 10/07/2020] [Indexed: 12/16/2022]
Abstract
Resin-based composite has overtaken dental amalgam as the most popular material for the repair of lost or damaged tooth structure. In spite of the popularity, the average composite lifetime is about half that of amalgam restorations. The leading cause of composite-restoration failure is decay at the margin where the adhesive is applied. The adhesive is intended to seal the composite/tooth interface, but the adhesive seal to dentin is fragile and readily degraded by acids, enzymes and other oral fluids. The inherent weakness of this material system is attributable to several factors including the lack of antimicrobial properties, remineralization capabilities and durable mechanical performance - elements that are central to the integrity of the adhesive/dentin (a/d) interfacial seal. Our approach to this problem offers a transition from a hybrid to a biohybrid structure. Discrete peptides are tethered to polymers to provide multi-bio-functional adhesive formulations that simultaneously achieve antimicrobial and remineralization properties. The bio-additive materials design combines several functional properties with the goal of providing an adhesive that will serve as a durable barrier to recurrent decay at the composite/tooth interface. This article provides an overview of our multi-faceted approach which uses peptides tethered to polymers and new polymer chemistries to achieve the next generation adhesive system - an adhesive that provides antimicrobial properties, repair of defective dentin and enhanced mechanical performance.
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Affiliation(s)
- Rizacan Sarikaya
- Institute for Bioengineering Research (IBER), University of Kansas (KU), 1530 W. 15th St, Lawrence, KS, 66045, USA; Department of Mechanical Engineering, University of Kansas (KU), 1530 W. 15th St, Lawrence, KS, 66045, USA
| | - Linyong Song
- Institute for Bioengineering Research (IBER), University of Kansas (KU), 1530 W. 15th St, Lawrence, KS, 66045, USA
| | - Esra Yuca
- Institute for Bioengineering Research (IBER), University of Kansas (KU), 1530 W. 15th St, Lawrence, KS, 66045, USA; Department of Molecular Biology and Genetics, Yildiz Technical University, Istanbul, 34210, Turkey
| | - Sheng-Xue Xie
- Institute for Bioengineering Research (IBER), University of Kansas (KU), 1530 W. 15th St, Lawrence, KS, 66045, USA
| | - Kyle Boone
- Institute for Bioengineering Research (IBER), University of Kansas (KU), 1530 W. 15th St, Lawrence, KS, 66045, USA; Bioengineering Program, University of Kansas, 1530 W. 15th St, University of Kansas (KU), Lawrence, KS, 66045, USA
| | - Anil Misra
- Institute for Bioengineering Research (IBER), University of Kansas (KU), 1530 W. 15th St, Lawrence, KS, 66045, USA; Civil, Environmental and Architectural Engineering Department, University of Kansas (KU), 1530 W. 15th St, Lawrence, KS, 66045, USA
| | - Paulette Spencer
- Institute for Bioengineering Research (IBER), University of Kansas (KU), 1530 W. 15th St, Lawrence, KS, 66045, USA; Department of Mechanical Engineering, University of Kansas (KU), 1530 W. 15th St, Lawrence, KS, 66045, USA; Bioengineering Program, University of Kansas, 1530 W. 15th St, University of Kansas (KU), Lawrence, KS, 66045, USA
| | - Candan Tamerler
- Institute for Bioengineering Research (IBER), University of Kansas (KU), 1530 W. 15th St, Lawrence, KS, 66045, USA; Department of Mechanical Engineering, University of Kansas (KU), 1530 W. 15th St, Lawrence, KS, 66045, USA; Bioengineering Program, University of Kansas, 1530 W. 15th St, University of Kansas (KU), Lawrence, KS, 66045, USA.
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5
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Guo Y, Nuermaimaiti A, Kjeldsen ND, Gothelf KV, Linderoth TR. Two-Dimensional Coordination Networks from Cyclic Dipeptides. J Am Chem Soc 2020; 142:19814-19818. [PMID: 33179492 DOI: 10.1021/jacs.0c08700] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Peptide-based biomimetic nanostructures and metal-organic coordination networks on surfaces are two promising classes of hybrid materials which have been explored recently. However, despite the great versatility and structural variability of natural and synthetic peptides, the two directions have so far not been merged in fabrication of metal-organic coordination networks using peptides as building blocks. Here we demonstrate that cyclic peptides can be used as ligands to form highly ordered, two-dimensional, peptide-based metal-organic coordination networks. The networks are formed on a Au(111) surface through coadsorption of cyclic dialanine with Cu-adatoms under Ultra-High Vacuum (UHV) conditions. Scanning Tunneling Microscopy (STM) in combination with X-ray Photoelectron spectroscopy (XPS) has been utilized to characterize the network structures at submolecular resolution and expound the chemical changes involved in network coordination. The networks involve a motif of three cyclic dialanine molecules coordinating to a central Cu-adatom. Interestingly the networks expose pores functionalized by the side chain of the cyclic peptide, suggesting a general method to form functionalized porous metal-organic networks on surfaces.
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Affiliation(s)
- Yuanyuan Guo
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Ajiguli Nuermaimaiti
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Niels Due Kjeldsen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Kurt V Gothelf
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark.,Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Trolle R Linderoth
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark.,Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark
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6
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Fischer NG, Münchow EA, Tamerler C, Bottino MC, Aparicio C. Harnessing biomolecules for bioinspired dental biomaterials. J Mater Chem B 2020; 8:8713-8747. [PMID: 32747882 PMCID: PMC7544669 DOI: 10.1039/d0tb01456g] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Dental clinicians have relied for centuries on traditional dental materials (polymers, ceramics, metals, and composites) to restore oral health and function to patients. Clinical outcomes for many crucial dental therapies remain poor despite many decades of intense research on these materials. Recent attention has been paid to biomolecules as a chassis for engineered preventive, restorative, and regenerative approaches in dentistry. Indeed, biomolecules represent a uniquely versatile and precise tool to enable the design and development of bioinspired multifunctional dental materials to spur advancements in dentistry. In this review, we survey the range of biomolecules that have been used across dental biomaterials. Our particular focus is on the key biological activity imparted by each biomolecule toward prevention of dental and oral diseases as well as restoration of oral health. Additional emphasis is placed on the structure-function relationships between biomolecules and their biological activity, the unique challenges of each clinical condition, limitations of conventional therapies, and the advantages of each class of biomolecule for said challenge. Biomaterials for bone regeneration are not reviewed as numerous existing reviews on the topic have been recently published. We conclude our narrative review with an outlook on the future of biomolecules in dental biomaterials and potential avenues of innovation for biomaterial-based patient oral care.
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Affiliation(s)
- Nicholas G Fischer
- Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota, 16-250A Moos Tower, 515 Delaware St. SE, Minneapolis, Minnesota 55455, USA.
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Kamathewatta NJB, Deay DO, Karaca BT, Seibold S, Nguyen TM, Tomás B, Richter ML, Berrie CL, Tamerler C. Self-Immobilized Putrescine Oxidase Biocatalyst System Engineered with a Metal Binding Peptide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:11908-11917. [PMID: 32921059 DOI: 10.1021/acs.langmuir.0c01986] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Flavin oxidases are valuable biocatalysts for the oxidative synthesis of a wide range of compounds, while at the same time reduce oxygen to hydrogen peroxide. Compared to other redox enzymes, their ability to use molecular oxygen as an electron acceptor offers a relatively simple system that does not require a dissociable coenzyme. As such, they are attractive targets for adaptation as cost-effective biosensor elements. Their functional immobilization on surfaces offers unique opportunities to expand their utilization for a wide range of applications. Genetically engineered peptides have been demonstrated as enablers of the functional assembly of biomolecules at solid material interfaces. Once identified as having a high affinity for the material of interest, these peptides can provide a single step bioassembly process with orientation control, a critical parameter for functional immobilization of the enzymes. In this study, for the first time, we explored the bioassembly of a putrescine oxidase enzyme using a gold binding peptide tag. The enzyme was genetically engineered to incorporate a gold binding peptide with an expectation of an effective display of the peptide tag to interact with the gold surface. In this work, the functional activity and expression were investigated, along with the selectivity of the binding of the peptide-tagged enzyme. The fusion enzyme was characterized using multiple techniques, including protein electrophoresis, enzyme activity, and microscopy and spectroscopic methods, to verify the functional expression of the tagged protein with near-native activity. Binding studies using quartz crystal microbalance (QCM), nanoparticle binding studies, and atomic force microscopy studies were used to address the selectivity of the binding through the peptide tag. Surface binding AFM studies show that the binding was selective for gold. Quartz crystal microbalance studies show a strong increase in the affinity of the peptide-tagged protein over the native enzyme, while activity assays of protein bound to nanoparticles provide evidence that the enzyme retained catalytic activity when immobilized. In addition to showing selectivity, AFM images show significant differences in the height of the molecules when immobilized through the peptide tag compared to immobilization of the native enzyme, indicating differences in orientation of the bound enzyme when attached via the affinity tag. Controlling the orientation of surface-immobilized enzymes would further improve their enzymatic activity and impact diverse applications, including oxidative biocatalysis, biosensors, biochips, and biofuel production.
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Affiliation(s)
| | - Dwight O Deay
- Department of Molecular Biosciences, University of Kansas, Lawrence, Kansas 66045, United States
| | - Banu Taktak Karaca
- Institute for Bioengineering Research, University of Kansas, Lawrence, Kansas 66045, United States
- Department of Molecular Biology and Genetics, Biruni University, İstanbul 34010, Turkey
| | - Steve Seibold
- Department of Molecular Biosciences, University of Kansas, Lawrence, Kansas 66045, United States
| | - Tyler M Nguyen
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Brandon Tomás
- Institute for Bioengineering Research, University of Kansas, Lawrence, Kansas 66045, United States
- Department of Mechanical Engineering, University of Kansas, Lawrence, Kansas 66045, United States
| | - Mark L Richter
- Department of Molecular Biosciences, University of Kansas, Lawrence, Kansas 66045, United States
| | - Cindy L Berrie
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
- Institute for Bioengineering Research, University of Kansas, Lawrence, Kansas 66045, United States
| | - Candan Tamerler
- Institute for Bioengineering Research, University of Kansas, Lawrence, Kansas 66045, United States
- Bioengineering Program, University of Kansas, Lawrence, Kansas 66045, United States
- Department of Mechanical Engineering, University of Kansas, Lawrence, Kansas 66045, United States
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8
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Yucesoy DT, Khatayevich D, Tamerler C, Sarikaya M. Rationally designed chimeric solid‐binding peptides for tailoring solid interfaces. ACTA ACUST UNITED AC 2020. [DOI: 10.1002/mds3.10065] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Deniz T. Yucesoy
- GEMSEC Genetically Engineered Materials Science and Engineering Center University of Washington Seattle WA USA
- Department of Materials Science and Engineering University of Washington Seattle WA USA
| | - Dimitry Khatayevich
- GEMSEC Genetically Engineered Materials Science and Engineering Center University of Washington Seattle WA USA
- Department of Materials Science and Engineering University of Washington Seattle WA USA
| | - Candan Tamerler
- GEMSEC Genetically Engineered Materials Science and Engineering Center University of Washington Seattle WA USA
- Department of Materials Science and Engineering University of Washington Seattle WA USA
- Department of Mechanical Engineering Bioengineering Program Institute for Bioengineering Research University of Kansas Lawrence Lawrence KS USA
| | - Mehmet Sarikaya
- GEMSEC Genetically Engineered Materials Science and Engineering Center University of Washington Seattle WA USA
- Department of Materials Science and Engineering University of Washington Seattle WA USA
- Department of Chemical Engineering University of Washington Seattle WA USA
- Department of Oral Health Sciences University of Washington Seattle WA USA
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9
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Karmi A, Sakala GP, Rotem D, Reches M, Porath D. Durable, Stable, and Functional Nanopores Decorated by Self-Assembled Dipeptides. ACS APPLIED MATERIALS & INTERFACES 2020; 12:14563-14568. [PMID: 32129065 PMCID: PMC7467542 DOI: 10.1021/acsami.0c00062] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 03/04/2020] [Indexed: 05/28/2023]
Abstract
Nanopores have become an important tool for the detection and analysis of molecules at the single-molecule level. Surface modification of solid-state nanopores can improve their durability and efficiency. Peptides are ideal for surface modifications as they allow tailoring of multiple properties by a rational design of their sequence. Here, silicon nitride nanopores were coated by a dipeptide layer where a l-3,4-dihydroxyphenylalanine (DOPA) residue is the anchoring element and the other amino acid moiety is the functional element. DOPA binds tightly to many types of surfaces and allows a one-step functionalization of surfaces by simple immersion. As a result, the lifetime of coated nanopores increased from hours to months and the current-stability has significantly improved with respect to uncoated pores. This improvement is achieved by controlling the surface wettability and charge. Peptide-coated nanopores can be utilized as sensitive sensors that can be adjusted based on the choice of the functional moiety of the coated peptide. In addition, the coating slows down dsDNA translocation because of the DNA interaction with the pore coating.
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10
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Spencer P, Ye Q, Song L, Parthasarathy R, Boone K, Misra A, Tamerler C. Threats to adhesive/dentin interfacial integrity and next generation bio-enabled multifunctional adhesives. J Biomed Mater Res B Appl Biomater 2019; 107:2673-2683. [PMID: 30895695 PMCID: PMC6754319 DOI: 10.1002/jbm.b.34358] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 02/07/2019] [Accepted: 02/20/2019] [Indexed: 12/27/2022]
Abstract
Nearly 100 million of the 170 million composite and amalgam restorations placed annually in the United States are replacements for failed restorations. The primary reason both composite and amalgam restorations fail is recurrent decay, for which composite restorations experience a 2.0-3.5-fold increase compared to amalgam. Recurrent decay is a pernicious problem-the standard treatment is replacement of defective composites with larger restorations that will also fail, initiating a cycle of ever-larger restorations that can lead to root canals, and eventually, to tooth loss. Unlike amalgam, composite lacks the inherent capability to seal discrepancies at the restorative material/tooth interface. The low-viscosity adhesive that bonds the composite to the tooth is intended to seal the interface, but the adhesive degrades, which can breach the composite/tooth margin. Bacteria and bacterial by-products such as acids and enzymes infiltrate the marginal gaps and the composite's inability to increase the interfacial pH facilitates cariogenic and aciduric bacterial outgrowth. Together, these characteristics encourage recurrent decay, pulpal damage, and composite failure. This review article examines key biological and physicochemical interactions involved in the failure of composite restorations and discusses innovative strategies to mitigate the negative effects of pathogens at the adhesive/dentin interface. © 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B:2466-2475, 2019.
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Affiliation(s)
- Paulette Spencer
- Institute for Bioengineering Research, School of Engineering, University of Kansas, 1530 W. 15th Street, Lawrence, KS 66045-7609, USA
- Department of Mechanical Engineering, University of Kansas,1530 W. 15th Street, Lawrence, KS 66045-7609, USA
| | - Qiang Ye
- Institute for Bioengineering Research, School of Engineering, University of Kansas, 1530 W. 15th Street, Lawrence, KS 66045-7609, USA
| | - Linyong Song
- Institute for Bioengineering Research, School of Engineering, University of Kansas, 1530 W. 15th Street, Lawrence, KS 66045-7609, USA
| | - Ranganathan Parthasarathy
- Department of Civil Engineering, Tennessee State University, 3500 John A Merritt Blvd, Nashville, TN 37209, USA
| | - Kyle Boone
- Institute for Bioengineering Research, School of Engineering, University of Kansas, 1530 W. 15th Street, Lawrence, KS 66045-7609, USA
| | - Anil Misra
- Institute for Bioengineering Research, School of Engineering, University of Kansas, 1530 W. 15th Street, Lawrence, KS 66045-7609, USA
- Department of Civil Engineering, University of Kansas, 1530 W. 15th Street, Lawrence, KS 66045-7609, USA
| | - Candan Tamerler
- Institute for Bioengineering Research, School of Engineering, University of Kansas, 1530 W. 15th Street, Lawrence, KS 66045-7609, USA
- Department of Mechanical Engineering, University of Kansas,1530 W. 15th Street, Lawrence, KS 66045-7609, USA
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11
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Wisdom EC, Zhou Y, Chen C, Tamerler C, Snead ML. Mitigation of peri-implantitis by rational design of bifunctional peptides with antimicrobial properties. ACS Biomater Sci Eng 2019; 6:2682-2695. [PMID: 32467858 DOI: 10.1021/acsbiomaterials.9b01213] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The integration of molecular and cell biology with materials science has led to strategies to improve the interface between dental implants with the surrounding soft and hard tissues in order to replace missing teeth and restore mastication. More than 3 million implants have been placed in the US alone and this number is rising by 500,000/year. Peri-implantitis, an inflammatory response to oral pathogens growing on the implant surface threatens to reduce service life leading to eventual implant failure, and such an outcome will have adverse impact on public health and create significant health care costs. Here we report a predictive approach to peptide design, which enabled us to engineer a bifunctional peptide to combat bacterial colonization and biofilm formation, reducing the adverse host inflammatory immune response that destroys the tissue surrounding implants and shortens their lifespans. This bifunctional peptide contains a titanium-binding domain that recognizes and binds with high affinity to titanium implant surfaces, fused through a rigid spacer domain with an antimicrobial domain. By varying the antimicrobial peptide domain, we were able to predict the properties of the resulting bifunctional peptides in their entirety by analyzing the sequence-structure-function relationship. These bifunctional peptides achieve: 1) nearly 100% surface coverage within minutes, a timeframe suitable for their clinical application to existing implants; 2) nearly 100% binding to a titanium surface even in the presence of contaminating serum protein; 3) durability to brushing with a commercially available electric toothbrush; and 4) retention of antimicrobial activity on the implant surface following bacterial challenge. A bifunctional peptide film can be applied to both new implants and/or repeatedly applied to previously placed implants to control bacterial colonization mitigating peri-implant disease that threatens dental implant longevity.
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Affiliation(s)
- E Cate Wisdom
- Bioengineering Program, Institute for Bioengineering Research, University of Kansas, Lawrence, USA
| | - Yan Zhou
- Herman Ostrow School of Dentistry of USC, Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, USA
| | - Casey Chen
- Herman Ostrow School of Dentistry of USC, Division of Periodontology, Diagnostic Services, & Dental Hygiene University of Southern California, Los Angeles, USA
| | - Candan Tamerler
- Bioengineering Program, Institute for Bioengineering Research, University of Kansas, Lawrence, USA.,Mechanical Engineering Department, University of Kansas, Lawrence, USA
| | - Malcolm L Snead
- Herman Ostrow School of Dentistry of USC, Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, USA
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12
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Thaker A, Pushpavanam K, Bista T, Sapareto S, Rege K, Nannenga BL. Protein-facilitated gold nanoparticle formation as indicators of ionizing radiation. Biotechnol Bioeng 2019; 116:3160-3167. [PMID: 31502657 DOI: 10.1002/bit.27163] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 08/26/2019] [Accepted: 08/31/2019] [Indexed: 12/30/2022]
Abstract
The use of X-ray radiation in radiotherapy is a common treatment for many cancers. Despite several scientific advances, determination of radiation delivered to the patient remains a challenge due to the inherent limitations of existing dosimeters including fabrication and operation. Here, we describe a colorimetric nanosensor that exhibits unique changes in color as a function of therapeutically relevant radiation dose (3-15 Gy). The nanosensor is formulated using a gold salt and maltose-binding protein as a templating agent, which upon exposure to ionizing radiation is converted to gold nanoparticles. The formation of gold nanoparticles from colorless precursor salts renders a change in color that can be observed visually. The dose-dependent multicolored response was quantified through a simple ultraviolet-visible spectrophotometer and the peak shift associated with the different colored dispersions was used as a quantitative indicator of therapeutically relevant radiation doses. The ease of fabrication, visual color changes upon exposure to ionizing radiation, and quantitative read-out demonstrates the potential of protein-facilitated biomineralization approaches to promote the development of next-generation detectors for ionizing radiation.
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Affiliation(s)
- Amar Thaker
- Chemical Engineering, School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona
| | - Karthik Pushpavanam
- Chemical Engineering, School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona
| | - Tomasz Bista
- Banner-MD Anderson Cancer Center, Gilbert, Arizona
| | | | - Kaushal Rege
- Chemical Engineering, School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona
| | - Brent L Nannenga
- Chemical Engineering, School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona
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Scarangella A, Soumbo M, Mlayah A, Bonafos C, Monje MC, Roques C, Marcelot C, Large N, Dammak T, Makasheva K. Detection of the conformational changes of Discosoma red fluorescent proteins adhered on silver nanoparticles-based nanocomposites via surface-enhanced Raman scattering. NANOTECHNOLOGY 2019; 30:165101. [PMID: 30654336 DOI: 10.1088/1361-6528/aaff79] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Description of the relationship between protein structure and function remains a primary focus in molecular biology, biochemistry, protein engineering and bioelectronics. Moreover, the investigation of the protein conformational changes after adhesion and dehydration is of importance to tackle problems related to the interaction of proteins with solid surfaces. In this paper the conformational changes of wild-type Discosoma recombinant red fluorescent proteins (DsRed) adhered on silver nanoparticles (AgNPs)-based nanocomposites are explored via surface-enhanced Raman scattering (SERS). Originality in the present approach is to work on dehydrated DsRed thin protein layers in link with natural conditions during drying. To enable the SERS effect, plasmonic substrates consisting of a single layer of AgNPs encapsulated by an ultra-thin silica cover layer were elaborated by plasma process. The achieved enhancement of the electromagnetic field in the vicinity of the AgNPs is as high as 105. This very strong enhancement factor allowed detecting Raman signals from discontinuous layers of DsRed issued from solution with protein concentration of only 80 nM. Three different conformations of the DsRed proteins after adhesion and dehydration on the plasmonic substrates were identified. It was found that the DsRed chromophore structure of the adsorbed proteins undergoes optically assisted chemical transformations when interacting with the optical beam, which leads to reversible transitions between the three different conformations. The proposed time-evolution scenario endorses the dynamical character of the relationship between protein structure and function. It also confirms that the conformational changes of proteins with strong internal coherence, like DsRed proteins, are reversible.
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Affiliation(s)
- Adriana Scarangella
- LAPLACE, Université de Toulouse; CNRS, UPS, INPT; 118 route de Narbonne, F-31062 Toulouse, France. CEMES-CNRS; Université de Toulouse, 29 rue Jeanne Marvig, BP 94347, F-31055 Toulouse, France. FERMaT, Université de Toulouse; CNRS, UPS, INPT, INSA; Toulouse, France
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14
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YUCA ESRA, TAMERLER CANDAN. Self Assembled Recombinant Proteins on Metallic Nanoparticles As Bimodal Imaging Probes. JOM (WARRENDALE, PA. : 1989) 2019; 71:1281-1290. [PMID: 34149269 PMCID: PMC8211090 DOI: 10.1007/s11837-018-03325-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 12/28/2018] [Indexed: 05/12/2023]
Abstract
Combining multiple modalities is at the center of developing new methods for sensing and imaging that are required for comprehensive understanding of events at the molecular level. Various imaging modalities have been developed using metallic nanoparticles owning to their exceptional physical and chemical properties. Due to their localized surface plasmon resonance characteristics, gold and silver nanoparticles exhibit unique optoelectronic properties commonly used in biomedical sciences and engineering. Self assembled monolayers or physical adsorption have previously been adapted to functionalize the surfaces of nanoparticles with biomolecules for targeted imaging. However, depending on differences among the functional groups used on the nanoparticle surface, wide variation in the displayed biomolecular property to recognize its target may result. In the last decade, the properties of inorganic binding peptides have been proven advantageous to assemble selective functional nano-entities or proteins onto nanoparticles surfaces. Herein we explored formation of self-assembled hybrid metallic nano-architectures that are composed of gold and silver nanoparticles with fluorescent proteins, for use as bimodal imaging probes. We employed metal binding peptide-based assembly to self assemble green fluorescence protein onto metallic substrates of various geometries. Assembly of the green fluorescent proteins, genetically engineered to incorporate gold- or silver-binding peptides onto metallic nanoparticles, resulted in the generation of hybrid-, biomodal-imaging probes in a single step. Green fluorescent activity on gold and silver surfaces can be been monitored using both plasmonic and fluorescent signatures. Our results demonstrate a novel bimodal imaging system that can be finely tuned with respect to nanoparticle size and protein concentration. Resulting hybrid probes may mitigate the limitation of depth penetration into biological tissues as well as providing high signal-to-noise ratio and sensitivity.
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Affiliation(s)
- ESRA YUCA
- Institute for Bioengineering Research, University of Kansas, Lawrence-KS, 66045, USA
- Molecular Biology and Genetics, Yildiz Technical University, Istanbul 34210, Turkey
| | - CANDAN TAMERLER
- Institute for Bioengineering Research, University of Kansas, Lawrence-KS, 66045, USA
- Bioengineering Program, University of Kansas, Lawrence-KS, 66045, USA
- Mechanical Engineering, University of Kansas, Lawrence, KS 66045, USA
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15
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Rivas M, Del Valle LJ, Alemán C, Puiggalí J. Peptide Self-Assembly into Hydrogels for Biomedical Applications Related to Hydroxyapatite. Gels 2019; 5:E14. [PMID: 30845674 PMCID: PMC6473879 DOI: 10.3390/gels5010014] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 02/19/2019] [Accepted: 02/25/2019] [Indexed: 01/02/2023] Open
Abstract
Amphiphilic peptides can be self-assembled by establishing physical cross-links involving hydrogen bonds and electrostatic interactions with divalent ions. The derived hydrogels have promising properties due to their biocompatibility, reversibility, trigger capability, and tunability. Peptide hydrogels can mimic the extracellular matrix and favor the growth of hydroxyapatite (HAp) as well as its encapsulation. Newly designed materials offer great perspectives for applications in the regeneration of hard tissues such as bones, teeth, and cartilage. Furthermore, development of drug delivery systems based on HAp and peptide self-assembly is attracting attention.
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Affiliation(s)
- Manuel Rivas
- Chemical Engineering Department, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
- Barcelona Research Center for Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
| | - Luís J Del Valle
- Chemical Engineering Department, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
- Barcelona Research Center for Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
| | - Carlos Alemán
- Chemical Engineering Department, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
- Barcelona Research Center for Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
| | - Jordi Puiggalí
- Chemical Engineering Department, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
- Barcelona Research Center for Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
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16
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Self-assembling antimicrobial peptides on nanotubular titanium surfaces coated with calcium phosphate for local therapy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 94:333-343. [PMID: 30423715 DOI: 10.1016/j.msec.2018.09.030] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 08/17/2018] [Accepted: 09/10/2018] [Indexed: 12/31/2022]
Abstract
Bacterial infection is a serious medical problem leading to implant failure. The current antibiotic based therapies rise concerns due to bacterial resistance. The family of antimicrobial peptides (AMP) is one of the promising candidates as local therapy agents due to their broad-spectrum activity. Despite AMPs receive increasing attention to treat infection, their effective delivery to the implantation site has been limited. Here, we developed an engineered dual functional peptide which delivers AMP as a biomolecular therapeutic agent onto calcium phosphate (Ca-P) deposited nanotubular titanium surfaces. Dual functionality of the peptide was achieved by combining a hydroxyapatite binding peptide-1 (HABP1) with an AMP using a flexible linker. HABP functionality of the peptide provided a self-coating property onto the nano-topographies that are designed to improve osteointegration capability, while AMP offered an antimicrobial protection onto the implant surface. We successfully deposited calcium phosphate minerals on nanotubular titanium oxide surface using pulse electrochemical deposition (PECD) and characterized the minerals by XRD, FT-IR, FE-SEM. Antimicrobial activity of the engineered peptide was tested against S. mutans (gram- positive) and E. coli (gram-negative) both in solution and on the Ca-P coated nanotubular titanium surface. In solution activity of AMP and dual functional peptide have the same Minimum Inhibitory Concentration (MIC) (32 mg/mL). The peptide also resulted in the reduction of the number of bacteria both for E.coli and S. mutans compare to control groups on the surface. Antimicrobial features of dual functional peptides are strongly correlated with their structures suggesting tunability in design through linkers regions. The dual-function peptide offers single-step solution for implant surface functionalization that could be applicable to any implant surface having different topographies.
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17
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Ngo-Duc TT, Plank JM, Chen G, Harrison RES, Morikis D, Liu H, Haberer ED. M13 bacteriophage spheroids as scaffolds for directed synthesis of spiky gold nanostructures. NANOSCALE 2018; 10:13055-13063. [PMID: 29952390 DOI: 10.1039/c8nr03229g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The spherical form (s-form) of a genetically-modified gold-binding M13 bacteriophage was investigated as a scaffold for gold synthesis. Repeated mixing of the phage with chloroform caused a 15-fold contraction from a nearly one micron long filament to an approximately 60 nm diameter spheroid. The geometry of the viral template and the helicity of its major coat protein were monitored throughout the transformation process using electron microscopy and circular dichroism spectroscopy, respectively. The transformed virus, which retained both its gold-binding and mineralization properties, was used to assemble gold colloid clusters and synthesize gold nanostructures. Spheroid-templated gold synthesis products differed in morphology from filament-templated ones. Spike-like structures protruded from the spherical template while isotropic particles developed on the filamentous template. Using inductively coupled plasma-mass spectroscopy (ICP-MS), gold ion adsorption was found to be comparatively high for the gold-binding M13 spheroid, and likely contributed to the dissimilar gold morphology. Template contraction was believed to modify the density, as well as the avidity of gold-binding peptides on the scaffold surface. The use of the s-form of the M13 bacteriophage significantly expands the templating capabilities of this viral platform and introduces the potential for further morphological control of a variety of inorganic material systems.
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Affiliation(s)
- Tam-Triet Ngo-Duc
- Materials Science and Engineering Program, University of California, Riverside, USA.
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18
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Scarangella A, Soumbo M, Villeneuve-Faure C, Mlayah A, Bonafos C, Monje MC, Roques C, Makasheva K. Adsorption properties of BSA and DsRed proteins deposited on thin SiO 2 layers: optically non-absorbing versus absorbing proteins. NANOTECHNOLOGY 2018; 29:115101. [PMID: 29318999 DOI: 10.1088/1361-6528/aaa68b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Protein adsorption on solid surfaces is of interest for many industrial and biomedical applications, where it represents the conditioning step for micro-organism adhesion and biofilm formation. To understand the driving forces of such an interaction we focus in this paper on the investigation of the adsorption of bovine serum albumin (BSA) (optically non-absorbing, model protein) and DsRed (optically absorbing, naturally fluorescent protein) on silica surfaces. Specifically, we propose synthesis of thin protein layers by means of dip coating of the dielectric surface in protein solutions with different concentrations (0.01-5.0 g l-1). We employed spectroscopic ellipsometry as the most suitable and non-destructive technique for evaluation of the protein layers' thickness and optical properties (refractive index and extinction coefficient) after dehydration, using two different optical models, Cauchy for BSA and Lorentz for DsRed. We demonstrate that the thickness, the optical properties and the wettability of the thin protein layers can be finely controlled by proper tuning of the protein concentration in the solution. These results are correlated with the thin layer morphology, investigated by AFM, FTIR and PL analyses. It is shown that the proteins do not undergo denaturation after dehydration on the silica surface. The proteins arrange themselves in a lace-like network for BSA and in a rod-like structure for DsRed to form mono- and multi-layers, due to different mechanisms driving the organization stage.
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Affiliation(s)
- A Scarangella
- LAPLACE, Université de Toulouse, CNRS, UPS, INPT, 118 route de Narbonne, F-31062, Toulouse, France. CEMES-CNRS, Université de Toulouse, 29 rue Jeanne Marvig, BP 94347, F-31055, Toulouse, France. FERMaT, Université de Toulouse, CNRS, UPS, INPT, INSA, Toulouse, France
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19
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Ye Q, Spencer P, Yuca E, Tamerler C. Engineered Peptide Repairs Defective Adhesive-Dentin Interface. MACROMOLECULAR MATERIALS AND ENGINEERING 2017; 302:1600487. [PMID: 29056869 PMCID: PMC5650097 DOI: 10.1002/mame.201600487] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Failure of dental composite restorations is primarily due to recurrent decay at the tooth-composite interface. At this interface, the adhesive and its bond with dentin is the barrier between the restored tooth and the oral environment. In vivo degradation of the bond formed at the adhesive/dentin (a/d) interface follows a cascade of events leading to weakening of the composite restoration. Here, a peptide-based approach is developed to mineralize deficient dentin matrices at the a/d interface. Peptides that have an inherent capacity to self-assemble on dentin and to induce calcium-phosphate remineralization are anchored at the interface. Distribution of adhesive, collagen, and mineral is analyzed using micro-Raman spectroscopy and fluorescence microscopy. The analysis demonstrates remineralization of the deficient dentin matrices achieved throughout the interface with homogeneous distribution of mineral. The peptide-based remineralization demonstrated here can be an enabling technology to design integrated biomaterial-tissue interfaces.
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Affiliation(s)
- Qiang Ye
- Bioengineering Research Center (BERC), University of Kansas (KU), 1530 W. 15th St, Lawrence, KS 66045, USA
| | - Paulette Spencer
- Bioengineering Research Center (BERC), University of Kansas (KU), 1530 W. 15th St, Lawrence, KS 66045, USA. Department of Mechanical Engineering, University of Kansas (KU), 1530 W. 15th St, Lawrence, KS 66045, USA
| | - Esra Yuca
- Bioengineering Research Center (BERC), University of Kansas (KU), 1530 W. 15th St, Lawrence, KS 66045, USA
| | - Candan Tamerler
- Bioengineering Research Center (BERC), University of Kansas (KU), 1530 W. 15th St, Lawrence, KS 66045, USA. Department of Mechanical Engineering, University of Kansas (KU), 1530 W. 15th St, Lawrence, KS 66045, USA
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20
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Seker UOS, Chen AY, Citorik RJ, Lu TK. Synthetic Biogenesis of Bacterial Amyloid Nanomaterials with Tunable Inorganic-Organic Interfaces and Electrical Conductivity. ACS Synth Biol 2017; 6:266-275. [PMID: 27794590 PMCID: PMC6422533 DOI: 10.1021/acssynbio.6b00166] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Amyloids are highly ordered, hierarchal protein nanoassemblies. Functional amyloids in bacterial biofilms, such as Escherichia coli curli fibers, are formed by the polymerization of monomeric proteins secreted into the extracellular space. Curli is synthesized by living cells, is primarily composed of the major curlin subunit CsgA, and forms biological nanofibers with high aspect ratios. Here, we explore the application of curli fibers for nanotechnology by engineering curli to mediate tunable biological interfaces with inorganic materials and to controllably form gold nanoparticles and gold nanowires. Specifically, we used cell-synthesized curli fibers as templates for nucleating and growing gold nanoparticles and showed that nanoparticle size could be modulated as a function of curli fiber gold-binding affinity. Furthermore, we demonstrated that gold nanoparticles can be preseeded onto curli fibers and followed by gold enhancement to form nanowires. Using these two approaches, we created artificial cellular systems that integrate inorganic-organic materials to achieve tunable electrical conductivity. We envision that cell-synthesized amyloid nanofibers will be useful for interfacing abiotic and biotic systems to create living functional materials..
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Affiliation(s)
- Urartu Ozgur Safak Seker
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, United States
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, 06800 Ankara, Turkey
| | - Allen Y. Chen
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, United States
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Robert J. Citorik
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, United States
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- MIT Microbiology Program, 77 Massachusetts Avenue, Cambridge Massachusetts 02139, United States
| | - Timothy K. Lu
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, United States
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- MIT Microbiology Program, 77 Massachusetts Avenue, Cambridge Massachusetts 02139, United States
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21
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Shen WZ, Cetinel S, Sharma K, Borujeny ER, Montemagno C. Peptide-functionalized iron oxide magnetic nanoparticle for gold mining. JOURNAL OF NANOPARTICLE RESEARCH : AN INTERDISCIPLINARY FORUM FOR NANOSCALE SCIENCE AND TECHNOLOGY 2017; 19:74. [PMID: 28260966 PMCID: PMC5315719 DOI: 10.1007/s11051-017-3752-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 01/23/2017] [Indexed: 06/06/2023]
Abstract
Here, we present our work on preparing a novel nanomaterial composed of inorganic binding peptides and magnetic nanoparticles for inorganic mining. Two previously selected and well-characterized gold-binding peptides from cell surface display, AuBP1 and AuBP2, were exploited. This nanomaterial (AuBP-MNP) was designed to fulfill the following two significant functions: the surface conjugated gold-binding peptide will recognize and selectively bind to gold, while the magnetic nano-sized core will respond and migrate according to the applied external magnetic field. This will allow the smart nanomaterial to mine an individual material (gold) from a pool of mixture, without excessive solvent extraction, filtration, and concentration steps. The working efficiency of AuBP-MNP was determined by showing a dramatic reduction of gold nanoparticle colloid concentration, monitored by spectroscopy. The binding kinetics of AuBP-MNP onto the gold surface was determined using surface plasmon resonance (SPR) spectroscopy, which exhibits around 100 times higher binding kinetics than peptides alone. The binding capacity of AuBP-MNP was demonstrated by a bench-top mining test with gold microparticles. Graphical abstract.
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Affiliation(s)
- Wei-Zheng Shen
- Ingenuity Lab, 1-070C, 11421 Saskatchewan Drive NW, T6G 2M9, Edmonton, AB Canada
- Departement of Chemical and Materials Engineering, University of Alberta, T6G 2V4, Edmonton, AB Canada
| | - Sibel Cetinel
- Ingenuity Lab, 1-070C, 11421 Saskatchewan Drive NW, T6G 2M9, Edmonton, AB Canada
- Departement of Chemical and Materials Engineering, University of Alberta, T6G 2V4, Edmonton, AB Canada
| | - Kumakshi Sharma
- Ingenuity Lab, 1-070C, 11421 Saskatchewan Drive NW, T6G 2M9, Edmonton, AB Canada
- Departement of Chemical and Materials Engineering, University of Alberta, T6G 2V4, Edmonton, AB Canada
| | - Elham Rafie Borujeny
- Ingenuity Lab, 1-070C, 11421 Saskatchewan Drive NW, T6G 2M9, Edmonton, AB Canada
- Departement of Chemical and Materials Engineering, University of Alberta, T6G 2V4, Edmonton, AB Canada
| | - Carlo Montemagno
- Ingenuity Lab, 1-070C, 11421 Saskatchewan Drive NW, T6G 2M9, Edmonton, AB Canada
- Departement of Chemical and Materials Engineering, University of Alberta, T6G 2V4, Edmonton, AB Canada
- National Institute of Nanotechnology, 11421 Saskatchewan Drive NW, T6G 2M9, Edmonton, AB Canada
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22
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Identification and binding mechanism of phage displayed peptides with specific affinity to acidalkali treated titanium. Colloids Surf B Biointerfaces 2016; 146:307-17. [DOI: 10.1016/j.colsurfb.2016.06.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 05/27/2016] [Accepted: 06/18/2016] [Indexed: 11/20/2022]
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23
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Yang W, Hellner B, Baneyx F. Self-Immobilization of Car9 Fusion Proteins within High Surface Area Silica Sol–Gels and Dynamic Control of Protein Release. Bioconjug Chem 2016; 27:2450-2459. [DOI: 10.1021/acs.bioconjchem.6b00406] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Wenlan Yang
- Department of Chemical Engineering, Box
351750, University of Washington, Seattle, Washington 98195, United States
| | - Brittney Hellner
- Department of Chemical Engineering, Box
351750, University of Washington, Seattle, Washington 98195, United States
| | - François Baneyx
- Department of Chemical Engineering, Box
351750, University of Washington, Seattle, Washington 98195, United States
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24
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Coyle BL, Baneyx F. Direct and reversible immobilization and microcontact printing of functional proteins on glass using a genetically appended silica-binding tag. Chem Commun (Camb) 2016; 52:7001-4. [PMID: 27157272 DOI: 10.1039/c6cc02660e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Fusion of disulfide-constrained or linear versions of the Car9 dodecapeptide to model fluorescent proteins support their on-contact and oriented immobilization onto unmodified glass. Bound proteins can be released and the surface regenerated by incubation with l-lysine. This noncovalent chemistry enables rapid and reversibe microcontact printing of tagged proteins and speeds up the production of bicontinuous protein patterns.
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Affiliation(s)
- Brandon L Coyle
- Department of Chemical Engineering, University of Washington, Box 351750, Seattle, WA, USA
| | - François Baneyx
- Department of Chemical Engineering, University of Washington, Box 351750, Seattle, WA, USA
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25
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Yazici H, O'Neill MB, Kacar T, Wilson BR, Oren EE, Sarikaya M, Tamerler C. Engineered Chimeric Peptides as Antimicrobial Surface Coating Agents toward Infection-Free Implants. ACS APPLIED MATERIALS & INTERFACES 2016; 8:5070-81. [PMID: 26795060 PMCID: PMC5310947 DOI: 10.1021/acsami.5b03697] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Prevention of bacterial colonization and consequent biofilm formation remains a major challenge in implantable medical devices. Implant-associated infections are not only a major cause of implant failures but also their conventional treatment with antibiotics brings further complications due to the escalation in multidrug resistance to a variety of bacterial species. Owing to their unique properties, antimicrobial peptides (AMPs) have gained significant attention as effective agents to combat colonization of microorganisms. These peptides have been shown to exhibit a wide spectrum of activities with specificity to a target cell while having a low tendency for developing bacterial resistance. Engineering biomaterial surfaces that feature AMP properties, therefore, offer a promising approach to prevent implant infections. Here, we engineered a chimeric peptide with bifunctionality that both forms a robust solid-surface coating while presenting antimicrobial property. The individual domains of the chimeric peptides were evaluated for their solid-binding kinetics to titanium substrate as well as for their antimicrobial properties in solution. The antimicrobial efficacy of the chimeric peptide on the implant material was evaluated in vitro against infection by a variety of bacteria, including Streptococcus mutans, Staphylococcus. epidermidis, and Escherichia coli, which are commonly found in oral and orthopedic implant related surgeries. Our results demonstrate significant improvement in reducing bacterial colonization onto titanium surfaces below the detectable limit. Engineered chimeric peptides with freely displayed antimicrobial domains could be a potential solution for developing infection-free surfaces by engineering implant interfaces with highly reduced bacterial colonization property.
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Affiliation(s)
- Hilal Yazici
- Genetically Engineered Materials Science and Engineering Center, Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States
- Department of Molecular Biology and Genetics, Molecular Biology, Biotechnology and Genetic Center, Istanbul Technical University, Istanbul 34469, Turkey
| | - Mary B. O'Neill
- Genetically Engineered Materials Science and Engineering Center, Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Turgay Kacar
- Genetically Engineered Materials Science and Engineering Center, Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States
- Department of Molecular Biology and Genetics, Molecular Biology, Biotechnology and Genetic Center, Istanbul Technical University, Istanbul 34469, Turkey
| | - Brandon R. Wilson
- Genetically Engineered Materials Science and Engineering Center, Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States
| | - E. Emre Oren
- Genetically Engineered Materials Science and Engineering Center, Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States
- Department of Biomedical Engineering, TOBB University of Economics and Technology, Ankara 06560, Turkey
| | - Mehmet Sarikaya
- Genetically Engineered Materials Science and Engineering Center, Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Candan Tamerler
- Genetically Engineered Materials Science and Engineering Center, Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States
- Department of Mechanical Engineering, Bioengineering Research Center, University of Kansas, Lawrence, Kansas 66045, United States
- Corresponding Author Phone: 785-864-2984. . Corresponding author address: Bioengineering Research Center, Department of Mechanical Engineering, 1530 W, 15th St, Learned Hall, Lawrence, KS 66047
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26
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Wisdom C, VanOosten SK, Boone KW, Khvostenko D, Arnold PM, Snead ML, Tamerler C. Controlling the Biomimetic Implant Interface: Modulating Antimicrobial Activity by Spacer Design. JOURNAL OF MOLECULAR AND ENGINEERING MATERIALS 2016; 4:1640005. [PMID: 28936427 PMCID: PMC5604879 DOI: 10.1142/s2251237316400050] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Surgical site infection is a common cause of post-operative morbidity, often leading to implant loosening, ultimately requiring revision surgery, increased costs and worse surgical outcomes. Since implant failure starts at the implant surface, creating and controlling the bio-material interface will play a critical role in reducing infection while improving host cell-to-implant interaction. Here, we engineered a biomimetic interface based upon a chimeric peptide that incorporates a titanium binding peptide (TiBP) with an antimicrobial peptide (AMP) into a single molecule to direct binding to the implant surface and deliver an antimicrobial activity against S. mutans and S. epidermidis, two bacteria which are linked with clinical implant infections. To optimize antimicrobial activity, we investigated the design of the spacer domain separating the two functional domains of the chimeric peptide. Lengthening and changing the amino acid composition of the spacer resulted in an improvement of minimum inhibitory concentration by a three-fold against S. mutans. Surfaces coated with the chimeric peptide reduced dramatically the number of bacteria, with up to a nine-fold reduction for S. mutans and a 48-fold reduction for S. epidermidis. Ab initio predictions of antimicrobial activity based on structural features were confirmed. Host cell attachment and viability at the biomimetic interface were also improved compared to the untreated implant surface. Biomimetic interfaces formed with this chimeric peptide offer interminable potential by coupling antimicrobial and improved host cell responses to implantable titanium materials, and this peptide based approach can be extended to various biomaterials surfaces.
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Affiliation(s)
- Cate Wisdom
- Bioengineering Program, University of Kansas, 3135A Learned Hall, 1530 W 15th Street Lawrence, Kansas 66045, USA
| | - Sarah Kay VanOosten
- Bioengineering Program, University of Kansas, 3135A Learned Hall, 1530 W 15th Street Lawrence, Kansas 66045, USA
| | - Kyle W. Boone
- Bioengineering Program, University of Kansas, 3135A Learned Hall, 1530 W 15th Street Lawrence, Kansas 66045, USA
| | - Dmytro Khvostenko
- Bioengineering Research Center (BERC), University of Kansas, 3138 Learned Hall, 1530 W 15th Street Lawrence, Kansas 66045, USA,
| | - Paul M. Arnold
- Department of Neurosurgery, University of Kansas Medical Center, 3901 Rainbow Boulevard Kansas City, Kansas 66160, USA,
| | - Malcolm L. Snead
- Center for Craniofacial Molecular Biology, Herman Ostrow School of Dentistry of USC, The University of Southern California CSA 142, 2250 Alcazar Street Los Angeles, CA 90033, USA,
| | - Candan Tamerler
- Mechanical Engineering Department and BERC, University of Kansas, 3138 Learned Hall, 1530 W 15th Street Lawrence, Kansas 66045, USA
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Das P, Reches M. Review insights into the interactions of amino acids and peptides with inorganic materials using single molecule force spectroscopy. Biopolymers 2015; 104:480-94. [DOI: 10.1002/bip.22655] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 03/18/2015] [Accepted: 03/30/2015] [Indexed: 01/11/2023]
Affiliation(s)
- Priyadip Das
- Institute of Chemistry, The Hebrew University of Jerusalem; 91904 Jerusalem Israel
- The Center for Nanoscience and Nanotechnology; The Hebrew University of Jerusalem; 91904 Jerusalem Israel
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Yucesoy DT, Hnilova M, Boone K, Arnold PM, Snead ML, Tamerler C. Chimeric peptides as implant functionalization agents for titanium alloy implants with antimicrobial properties. JOM (WARRENDALE, PA. : 1989) 2015; 67:754-766. [PMID: 26041967 PMCID: PMC4450091 DOI: 10.1007/s11837-015-1350-7] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Implant-associated infections can have severe effects on the longevity of implant devices and they also represent a major cause of implant failures. Treating these infections associated with implants by antibiotics is not always an effective strategy due to poor penetration rates of antibiotics into biofilms. Additionally, emerging antibiotic resistance poses serious concerns. There is an urge to develop effective antibacterial surfaces that prevent bacterial adhesion and proliferation. A novel class of bacterial therapeutic agents, known as antimicrobial peptides (AMP's), are receiving increasing attention as an unconventional option to treat septic infection, partly due to their capacity to stimulate innate immune responses and for the difficulty of microorganisms to develop resistance towards them. While host- and bacterial- cells compete in determining the ultimate fate of the implant, functionalization of implant surfaces with antimicrobial peptides can shift the balance and prevent implant infections. In the present study, we developed a novel chimeric peptide to functionalize the implant material surface. The chimeric peptide simultaneously presents two functionalities, with one domain binding to a titanium alloy implant surface through a titanium-binding domain while the other domain displays an antimicrobial property. This approach gains strength through control over the bio-material interfaces, a property built upon molecular recognition and self-assembly through a titanium alloy binding domain in the chimeric peptide. The efficiency of chimeric peptide both in-solution and absorbed onto titanium alloy surface was evaluated in vitro against three common human host infectious bacteria, S. mutans, S. epidermidis, and E. coli. In biological interactions such as occurs on implants, it is the surface and the interface that dictate the ultimate outcome. Controlling the implant surface by creating an interface composed chimeric peptides may therefore open up new possibilities to cover the implant site and tailor it to a desirable bioactivity.
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Affiliation(s)
- Deniz T Yucesoy
- GEMSEC, Genetically Engineered Materials Science and Engineering Center, Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA
| | - Marketa Hnilova
- GEMSEC, Genetically Engineered Materials Science and Engineering Center, Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA
| | - Kyle Boone
- Bioengineering Program and Bioengineering Research Center, University of Kansas, Lawrence, KS-66045
| | - Paul M Arnold
- Department of Neurosurgery, Spinal Cord Injury Center, School of Medicine, University of Kansas, Kansas City, KS 66160, USA
| | - Malcolm L Snead
- Ostrow School of Dentistry of USC, Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA 90089, USA
| | - Candan Tamerler
- Department of Mechanical Engineering and Bioengineering Research Center, University of Kansas, Lawrence, KS-66045 , + 7858642984
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Solid-binding peptides: smart tools for nanobiotechnology. Trends Biotechnol 2015; 33:259-68. [PMID: 25796487 DOI: 10.1016/j.tibtech.2015.02.005] [Citation(s) in RCA: 118] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 02/15/2015] [Accepted: 02/23/2015] [Indexed: 12/12/2022]
Abstract
Over the past decade, solid-binding peptides (SBPs) have been used increasingly as molecular building blocks in nanobiotechnology. These peptides show selectivity and bind with high affinity to the surfaces of a diverse range of solid materials including metals, metal oxides, metal compounds, magnetic materials, semiconductors, carbon materials, polymers, and minerals. They can direct the assembly and functionalisation of materials, and have the ability to mediate the synthesis and construction of nanoparticles and complex nanostructures. As the availability of newly synthesised nanomaterials expands rapidly, so too do the potential applications for SBPs.
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Currin A, Swainston N, Day PJ, Kell DB. Synthetic biology for the directed evolution of protein biocatalysts: navigating sequence space intelligently. Chem Soc Rev 2015; 44:1172-239. [PMID: 25503938 PMCID: PMC4349129 DOI: 10.1039/c4cs00351a] [Citation(s) in RCA: 251] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Indexed: 12/21/2022]
Abstract
The amino acid sequence of a protein affects both its structure and its function. Thus, the ability to modify the sequence, and hence the structure and activity, of individual proteins in a systematic way, opens up many opportunities, both scientifically and (as we focus on here) for exploitation in biocatalysis. Modern methods of synthetic biology, whereby increasingly large sequences of DNA can be synthesised de novo, allow an unprecedented ability to engineer proteins with novel functions. However, the number of possible proteins is far too large to test individually, so we need means for navigating the 'search space' of possible protein sequences efficiently and reliably in order to find desirable activities and other properties. Enzymologists distinguish binding (Kd) and catalytic (kcat) steps. In a similar way, judicious strategies have blended design (for binding, specificity and active site modelling) with the more empirical methods of classical directed evolution (DE) for improving kcat (where natural evolution rarely seeks the highest values), especially with regard to residues distant from the active site and where the functional linkages underpinning enzyme dynamics are both unknown and hard to predict. Epistasis (where the 'best' amino acid at one site depends on that or those at others) is a notable feature of directed evolution. The aim of this review is to highlight some of the approaches that are being developed to allow us to use directed evolution to improve enzyme properties, often dramatically. We note that directed evolution differs in a number of ways from natural evolution, including in particular the available mechanisms and the likely selection pressures. Thus, we stress the opportunities afforded by techniques that enable one to map sequence to (structure and) activity in silico, as an effective means of modelling and exploring protein landscapes. Because known landscapes may be assessed and reasoned about as a whole, simultaneously, this offers opportunities for protein improvement not readily available to natural evolution on rapid timescales. Intelligent landscape navigation, informed by sequence-activity relationships and coupled to the emerging methods of synthetic biology, offers scope for the development of novel biocatalysts that are both highly active and robust.
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Affiliation(s)
- Andrew Currin
- Manchester Institute of Biotechnology , The University of Manchester , 131, Princess St , Manchester M1 7DN , UK . ; http://dbkgroup.org/; @dbkell ; Tel: +44 (0)161 306 4492
- School of Chemistry , The University of Manchester , Manchester M13 9PL , UK
- Centre for Synthetic Biology of Fine and Speciality Chemicals (SYNBIOCHEM) , The University of Manchester , 131, Princess St , Manchester M1 7DN , UK
| | - Neil Swainston
- Manchester Institute of Biotechnology , The University of Manchester , 131, Princess St , Manchester M1 7DN , UK . ; http://dbkgroup.org/; @dbkell ; Tel: +44 (0)161 306 4492
- Centre for Synthetic Biology of Fine and Speciality Chemicals (SYNBIOCHEM) , The University of Manchester , 131, Princess St , Manchester M1 7DN , UK
- School of Computer Science , The University of Manchester , Manchester M13 9PL , UK
| | - Philip J. Day
- Manchester Institute of Biotechnology , The University of Manchester , 131, Princess St , Manchester M1 7DN , UK . ; http://dbkgroup.org/; @dbkell ; Tel: +44 (0)161 306 4492
- Centre for Synthetic Biology of Fine and Speciality Chemicals (SYNBIOCHEM) , The University of Manchester , 131, Princess St , Manchester M1 7DN , UK
- Faculty of Medical and Human Sciences , The University of Manchester , Manchester M13 9PT , UK
| | - Douglas B. Kell
- Manchester Institute of Biotechnology , The University of Manchester , 131, Princess St , Manchester M1 7DN , UK . ; http://dbkgroup.org/; @dbkell ; Tel: +44 (0)161 306 4492
- School of Chemistry , The University of Manchester , Manchester M13 9PL , UK
- Centre for Synthetic Biology of Fine and Speciality Chemicals (SYNBIOCHEM) , The University of Manchester , 131, Princess St , Manchester M1 7DN , UK
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Yucesoy DT, Karaca BT, Cetinel S, Caliskan HB, Adali E, Gul-Karaguler N, Tamerler C. Direct bioelectrocatalysis at the interfaces by genetically engineered dehydrogenase. BIOINSPIRED BIOMIMETIC AND NANOBIOMATERIALS 2015. [DOI: 10.1680/bbn.14.00022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Atomistic modeling of peptide adsorption on rutile (100) in the presence of water and of contamination by low molecular weight alcohols. Biointerphases 2014; 9:031006. [DOI: 10.1116/1.4883555] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Rieger J, Kellermeier M, Nicoleau L. Formation of nanoparticles and nanostructures--an industrial perspective on CaCO3 , cement, and polymers. Angew Chem Int Ed Engl 2014; 53:12380-96. [PMID: 25156760 DOI: 10.1002/anie.201402890] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Indexed: 11/06/2022]
Abstract
Nanotechnology enables the design of materials with outstanding performance. A key element of nanotechnology is the ability to manipulate and control matter on the nanoscale to achieve a certain desired set of specific properties. Here, we discuss recent insight into the formation mechanisms of inorganic nanoparticles during precipitation reactions. We focus on calcium carbonate, and describe the various transient stages potentially occurring on the way from the dissolved constituent ions to finally stable macrocrystals-including solute ion clusters, dense liquid phases, amorphous intermediates, and nanoparticles. The role of polymers in nucleating, templating, stabilizing, and/or preventing these structures is outlined. As a specific example for applied nanotechnology, the properties of cement are shown to be determined by the formation and interlocking of calcium-silicate-hydrate nanoplatelets. The aggregation of these platelets into mesoscale architectures can be controlled with polymers.
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Affiliation(s)
- Jens Rieger
- Advanced Materials and Systems Research, BASF SE, GM/I-B1, 67056 Ludwigshafen (Germany).
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Rieger J, Kellermeier M, Nicoleau L. Die Bildung von Nanopartikeln und Nanostrukturen - CaCO3, Zement und Polymere aus Sicht der Industrie. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402890] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Khatayevich D, Page T, Gresswell C, Hayamizu Y, Grady W, Sarikaya M. Selective detection of target proteins by peptide-enabled graphene biosensor. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:1505-13, 1504. [PMID: 24677773 DOI: 10.1002/smll.201302188] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 11/16/2013] [Indexed: 05/24/2023]
Abstract
Direct molecular detection of biomarkers is a promising approach for diagnosis and monitoring of numerous diseases, as well as a cornerstone of modern molecular medicine and drug discovery. Currently, clinical applications of biomarkers are limited by the sensitivity, complexity and low selectivity of available indirect detection methods. Electronic 1D and 2D nano-materials such as carbon nanotubes and graphene, respectively, offer unique advantages as sensing substrates for simple, fast and ultrasensitive detection of biomolecular binding. Versatile methods, however, have yet to be developed for simultaneous functionalization and passivation of the sensor surface to allow for enhanced detection and selectivity of the device. Herein, we demonstrate selective detection of a model protein against a background of serum protein using a graphene sensor functionalized via self-assembling multifunctional short peptides. The two peptides are engineered to bind to graphene and undergo co-assembly in the form of an ordered monomolecular film on the substrate. While the probe peptide displays the bioactive molecule, the passivating peptide prevents non-specific protein adsorption onto the device surface, ensuring target selectivity. In particular, we demonstrate a graphene field effect transistor (gFET) biosensor which can detect streptavidin against a background of serum bovine albumin at less than 50 ng/ml. Our nano-sensor design, allows us to restore the graphene surface and utilize each sensor in multiple experiments. The peptide-enabled gFET device has great potential to address a variety of bio-sensing problems, such as studying ligand-receptor interactions, or detection of biomarkers in a clinical setting.
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Affiliation(s)
- Dmitriy Khatayevich
- GEMSEC, Genetically Engineered Materials Science and Engineering Center, Materials Science and Engineering, University of Washington, 302 Roberts Hall, Seattle, WA, 98195, USA
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36
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Artzy-Schnirman A, Abu-Shah E, Dishon M, Soifer H, Sivan Y, Reiter Y, Benhar I, Sivan U. On the limited recognition of inorganic surfaces by short peptides compared with antibodies. J Pept Sci 2014; 20:446-50. [PMID: 24733719 DOI: 10.1002/psc.2636] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 03/06/2014] [Accepted: 03/14/2014] [Indexed: 11/07/2022]
Abstract
The vast potential applications of biomolecules that bind inorganic surfaces led mostly to the isolation of short peptides that target selectively specific materials. The demonstrated differential affinity toward certain surfaces created the impression that the recognition capacity of short peptides may match that of rigid biomolecules. In the following, we challenge this view by comparing the capacity of antibody molecules to discriminate between the (100) and (111A) facets of a gallium arsenide semiconductor crystal with the capacity of short peptides to do the same. Applying selection from several peptide and single chain phage display libraries, we find a number of antibody molecules that bind preferentially a given crystal facet but fail to isolate, in dozens of attempts, a single peptide capable of such recognition. The experiments underscore the importance of rigidity to the recognition of inorganic flat targets and therefore set limitations on potential applications of short peptides in biomimetics.
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Affiliation(s)
- Arbel Artzy-Schnirman
- Department of Biology, Technion - Israel Institute of Technology, Haifa, 32000, Israel; Department of Physics, Technion - Israel Institute of Technology, Haifa, 32000, Israel; The Russell Berrie Nanotechnology Institute, Technion - Israel Institute of Technology, Haifa, 32000, Israel
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37
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Wright LB, Freeman CL, Walsh TR. Benzene adsorption at the aqueous (0 1 1) α-quartz interface: is surface flexibility important? MOLECULAR SIMULATION 2013. [DOI: 10.1080/08927022.2013.796589] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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38
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Selection and characterization of peptides binding to diamond-like carbon. Colloids Surf B Biointerfaces 2013; 110:66-73. [DOI: 10.1016/j.colsurfb.2013.04.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 04/05/2013] [Accepted: 04/08/2013] [Indexed: 11/18/2022]
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39
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Adams BL, Finch AS, Hurley MM, Sarkes DA, Stratis-Cullum DN. Genetically engineered peptides for inorganics: study of an unconstrained bacterial display technology and bulk aluminum alloy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:4585-91. [PMID: 23868808 PMCID: PMC3793233 DOI: 10.1002/adma.201301646] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 05/20/2013] [Indexed: 05/16/2023]
Abstract
The first-ever peptide biomaterial discovery using an unconstrained engineered bacterial display technology is reported. Using this approach, we have developed genetically engineered peptide binders for a bulk aluminum alloy and use molecular dynamics simulation of peptide conformational fluctuations to demonstrate sequence-dependent, structure-function relationships for metal and metal oxide interactions.
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Affiliation(s)
- Bryn L Adams
- U.S. Army Research LaboratoryRDRL-SEE-B, 2800 Powder Mill Road, Adelphi, MD 20783, USA
| | - Amethist S Finch
- U.S. Army Research LaboratoryRDRL-SEE-B, 2800 Powder Mill Road, Adelphi, MD 20783, USA
| | - Margaret M Hurley
- US Army Research LaboratoryRDRL-WML-B, 4600 Deer Creek Loop, Aberdeen Proving Ground, MD 21005, USA
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40
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Hassert R, Beck-Sickinger AG. Tuning peptide affinity for biofunctionalized surfaces. Eur J Pharm Biopharm 2013; 85:69-77. [DOI: 10.1016/j.ejpb.2013.02.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 02/05/2013] [Accepted: 02/12/2013] [Indexed: 01/16/2023]
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41
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Razvag Y, Gutkin V, Reches M. Probing the interaction of individual amino acids with inorganic surfaces using atomic force spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:10102-10109. [PMID: 23859476 DOI: 10.1021/la4015866] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This article describes single-molecule force spectroscopy measurements of the interaction between individual amino acid residues and inorganic surfaces in an aqueous solution. In each measurement, there is an amino acid residue, lysine, glutamate, phenylalanine, leucine, or glutamine, and each represents a class of amino acids (positively or negatively charged, aromatic, nonpolar, and polar). Force-distance curves measured the interaction of the individual amino acid bound to a silicon atomic force microscope (AFM) tip with a silcon substrate, cut from a single-crystal wafer, or mica. Using this method, we were able to measure low adhesion forces (below 300 pN) and could clearly determine the strength of interactions between the individual amino acid residues and the inorganic substrate. In addition, we observed how changes in the pH and ionic strength of the solution affected the adsorption of the residues to the substrates. Our results pinpoint the important role of hydrophobic interactions among the amino acids and the substrate, where hydrophobic phenylalanine exhibited the strongest adhesion to a silicon substrate. Additionally, electrostatic interactions also contributed to the adsorption of amino acid residues to inorganic substrates. A change in the pH or ionic strength values of the buffer altered the strength of interactions among the amino acids and the substrate. We concluded that the interplay between the hydrophobic forces and electrostatic interactions will determine the strength of adsorption among the amino acids and the surface. Overall, these results contribute to our understanding of the interaction at the organic-inorganic interface. These results may have implications for our perception of the specificity of peptide binding to inorganic surfaces. Consequently, it would possibly lead to a better design of composite materials and devices.
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Affiliation(s)
- Yair Razvag
- Institute of Chemistry, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
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42
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Baio JE, Jaye C, Fischer DA, Weidner T. Multiplexed orientation and structure analysis by imaging near-edge X-ray absorption fine structure (MOSAIX) for combinatorial surface science. Anal Chem 2013; 85:4307-10. [PMID: 23544501 DOI: 10.1021/ac4003479] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Near-edge X-ray absorption fine structure (NEXAFS) spectroscopy, as a technique, offers detailed information about the bonding environment of molecules at a surface. However, because it is a synchrotron based method, beam-time is limited and users must typically prioritize and narrowly define the scopes of experiments. In this study, we demonstrate a novel method that opens up the possibility of the use of large area NEXAFS imaging to pursue combinatorial studies. To explore the capabilities of the NIST full field NEXAFS microscope available at the National Synchrotron Light Source as a high throughput imaging instrument, we collected NEXAFS images from a sample array consisting of 144 different elements with a periodic sequence of different surface modifications. NEXAFS images collected from this model system illustrate how hyperspectral NEXAFS data can be used for parallel analysis of large numbers of samples either directly from the overall image or by extracting spectra from regions of interest.
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Affiliation(s)
- Joe E Baio
- Max Planck Institute for Polymer Research, Mainz, Germany
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43
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Sapsford KE, Algar WR, Berti L, Gemmill KB, Casey BJ, Oh E, Stewart MH, Medintz IL. Functionalizing nanoparticles with biological molecules: developing chemistries that facilitate nanotechnology. Chem Rev 2013; 113:1904-2074. [PMID: 23432378 DOI: 10.1021/cr300143v] [Citation(s) in RCA: 818] [Impact Index Per Article: 74.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Kim E Sapsford
- Division of Biology, Department of Chemistry and Materials Science, Office of Science and Engineering Laboratories, U.S. Food and Drug Administration, Silver Spring, Maryland 20993, United States
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44
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Wright LB, Rodger PM, Corni S, Walsh TR. GolP-CHARMM: First-Principles Based Force Fields for the Interaction of Proteins with Au(111) and Au(100). J Chem Theory Comput 2013; 9:1616-30. [DOI: 10.1021/ct301018m] [Citation(s) in RCA: 177] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Louise B. Wright
- University of Warwick, Dept.
of Chemistry and Centre for Scientific Computing, Coventry, CV4 7AL,
United Kingdom
| | - P. Mark Rodger
- University of Warwick, Dept.
of Chemistry and Centre for Scientific Computing, Coventry, CV4 7AL,
United Kingdom
| | | | - Tiffany R. Walsh
- Deakin University,
Institute for
Frontier Materials, Geelong, Vic. 3216, Australia
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45
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Addressable self-immobilization of lactate dehydrogenase across multiple length scales. Biotechnol J 2013; 8:262-72. [DOI: 10.1002/biot.201100502] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 12/20/2012] [Accepted: 01/08/2013] [Indexed: 11/07/2022]
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Yazici H, Fong H, Wilson B, Oren E, Amos F, Zhang H, Evans J, Snead M, Sarikaya M, Tamerler C. Biological response on a titanium implant-grade surface functionalized with modular peptides. Acta Biomater 2013; 9:5341-52. [PMID: 23159566 DOI: 10.1016/j.actbio.2012.11.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 10/18/2012] [Accepted: 11/02/2012] [Indexed: 12/21/2022]
Abstract
Titanium (Ti) and its alloys are among the most successful implantable materials for dental and orthopedic applications. The combination of excellent mechanical and corrosion resistance properties makes them highly desirable as endosseous implants that can withstand a demanding biomechanical environment. Yet, the success of the implant depends on its osteointegration, which is modulated by the biological reactions occurring at the interface of the implant. A recent development for improving biological responses on the Ti-implant surface has been the realization that bifunctional peptides can impart material binding specificity not only because of their molecular recognition of the inorganic material surface, but also through their self-assembly and ease of biological conjugation properties. To assess peptide-based functionalization on bioactivity, the present authors generated a set of peptides for implant-grade Ti, using cell surface display methods. Out of 60 unique peptides selected by this method, two of the strongest titanium binding peptides, TiBP1 and TiBP2, were further characterized for molecular structure and adsorption properties. These two peptides demonstrated unique, but similar molecular conformations different from that of a weak binder peptide, TiBP60. Adsorption measurements on a Ti surface revealed that their disassociation constants were 15-fold less than TiBP60. Their flexible and modular use in biological surface functionalization were demonstrated by conjugating them with an integrin recognizing peptide motif, RGDS. The functionalization of the Ti surface by the selected peptides significantly enhanced the bioactivity of osteoblast and fibroblast cells on implant-grade materials.
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Wright LB, Walsh TR. Efficient conformational sampling of peptides adsorbed onto inorganic surfaces: insights from a quartz binding peptide. Phys Chem Chem Phys 2013; 15:4715-26. [DOI: 10.1039/c3cp42921k] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Nergiz SZ, Slocik JM, Naik RR, Singamaneni S. Surface defect sites facilitate fibrillation: an insight into adsorption of gold-binding peptides on Au(111). Phys Chem Chem Phys 2013; 15:11629-33. [DOI: 10.1039/c3cp50972a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Wright LB, Rodger PM, Walsh TR. Aqueous citrate: a first-principles and force-field molecular dynamics study. RSC Adv 2013. [DOI: 10.1039/c3ra42437e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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Wright LB, Walsh TR. First-principles molecular dynamics simulations of NH 4+ and CH3COO− adsorption at the aqueous quartz interface. J Chem Phys 2012; 137:224702. [DOI: 10.1063/1.4769727] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
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