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Ma J, Jin B, Guye KN, Chowdhury ME, Naser NY, Chen CL, De Yoreo JJ, Baneyx F. Controlling Mineralization with Protein-Functionalized Peptoid Nanotubes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2207543. [PMID: 36281797 DOI: 10.1002/adma.202207543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 10/07/2022] [Indexed: 06/16/2023]
Abstract
Sequence-defined foldamers that self-assemble into well-defined architectures are promising scaffolds to template inorganic mineralization. However, it has been challenging to achieve robust control of nucleation and growth without sequence redesign or extensive experimentation. Here, peptoid nanotubes functionalized with a panel of solid-binding proteins are used to mineralize homogeneously distributed and monodisperse anatase nanocrystals from the water-soluble TiBALDH precursor. Crystallite size is systematically tuned between 1.4 and 4.4 nm by changing protein coverage and the identity and valency of the genetically engineered solid-binding segments. The approach is extended to the synthesis of gold nanoparticles and, using a protein encoding both material-binding specificities, to the fabrication of titania/gold nanocomposites capable of photocatalysis under visible-light illumination. Beyond uncovering critical roles for hierarchical organization and denticity on solid-binding protein mineralization outcomes, the strategy described herein should prove valuable for the fabrication of hierarchical hybrid materials incorporating a broad range of inorganic components.
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Affiliation(s)
- Jinrong Ma
- Molecular Engineering and Science Institute, University of Washington, Seattle, WA, 98115, USA
| | - Biao Jin
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Kathryn N Guye
- Department of Chemistry, University of Washington, Seattle, WA, 98115, USA
| | - Md Emtias Chowdhury
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Nada Y Naser
- Department of Chemical Engineering, University of Washington, Seattle, WA, 98115, USA
| | - Chun-Long Chen
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
- Department of Chemical Engineering, University of Washington, Seattle, WA, 98115, USA
| | - James J De Yoreo
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
- Department of Materials Science and Engineering, University of Washington, Seattle, WA, 98115, USA
| | - François Baneyx
- Molecular Engineering and Science Institute, University of Washington, Seattle, WA, 98115, USA
- Department of Chemical Engineering, University of Washington, Seattle, WA, 98115, USA
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2
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Peptides for Coating TiO 2 Implants: An In Silico Approach. Int J Mol Sci 2022; 23:ijms232214048. [PMID: 36430525 PMCID: PMC9693858 DOI: 10.3390/ijms232214048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 10/29/2022] [Accepted: 11/08/2022] [Indexed: 11/16/2022] Open
Abstract
Titanium is usually used in the manufacturing of metal implants due to its biocompatibility and high resistance to corrosion. A structural and functional connection between the living bone and the surface of the implant, a process called osseointegration, is mandatory for avoiding prolonged healing, infections, and tissue loss. Therefore, osseointegration is crucial for the success of the implantation procedure. Osseointegration is a process mediated by bone-matrix progenitor cells' proteins, named integrins. In this study, we used an in silico approach to assemble and test peptides that can be strategically used in sensitizing TiO2 implants in order to improve osseointegration. To do so, we downloaded PDB structures of integrins α5β1, αvβ3, and αIIbβ3; their biological ligands; and low-cost proteins from the Protein Data Bank, and then we performed a primary (integrin-protein) docking analysis. Furthermore, we modeled complex peptides with the potential to bind to the TiO2 surface on the implant, as well as integrins in the bone-matrix progenitor cells. Then we performed a secondary (integrin-peptide) docking analysis. The ten most promising integrin-peptide docking results were further verified by molecular dynamics (MD) simulations. We recognized 82 peptides with great potential to bind the integrins, and therefore to be used in coating TiO2 implants. Among them, peptides 1 (GHTHYHAVRTQTTGR), 3 (RKLPDATGR), and 8 (GHTHYHAVRTQTLKA) showed the highest binding stability during the MD simulations. This bioinformatics approach saves time and more effectively directs in vitro studies.
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3
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Lee RV, Zareie HM, Sarikaya M. Chimeric Peptide-Based Biomolecular Constructs for Versatile Nucleic Acid Biosensing. ACS APPLIED MATERIALS & INTERFACES 2022; 14:23164-23181. [PMID: 35543419 DOI: 10.1021/acsami.2c03341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Nucleic acid biomarkers hold great potential as key indicators for the diagnosis and monitoring of diseases. Herein we design and implement bifunctional chimeric biomolecules composed of a solid-binding peptide (SBP) domain that specifically adsorbs onto solid sensor surfaces and a peptide nucleic acid (PNA) moiety that facilitates anchoring of antisense oligonucleotide (ASO) probes for the detection of nucleic acid targets. A gold-binding peptide, AuBP1, previously selected by directed evolution to specifically bind to gold, served as the basis for immobilizing nucleic acid probes onto gold substrates. Using surface plasmon resonance (SPR) spectroscopy and quartz crystal microbalance (QCM) analyses, we demonstrate the sequential biomolecular assembly of the heterofunctional solid-binding peptide-antisense oligomer (SBP-ASO) construct onto a sensor surface and the subsequent detection of DNA in an aqueous environment. The effect of steric hindrance on optimal probe assembly is observed, establishing that less packing density results in greater target capture efficacy. In addition, an adsorbed layer of chimeric solid-binding peptide-peptide nucleic acid (SBP-PNA) undergoes viscoelastic changes at the solid-liquid interface upon probe immobilization and DNA target capture, whereby the rigid biofunctional layer becomes more flexible. The dual nature of the chimeric construct is highly amenable to a variety of platforms allowing for both specific recognition and probe immobilization on the sensor surface, while the modular design of the solid-binding peptide-antisense oligonucleotide provides facile functionalization of a wide diversity of solid substrates.
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Affiliation(s)
- Richard V Lee
- GEMSEC, Genetically Engineered Materials Science and Engineering Center, Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Hadi M Zareie
- GEMSEC, Genetically Engineered Materials Science and Engineering Center, Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Mehmet Sarikaya
- GEMSEC, Genetically Engineered Materials Science and Engineering Center, Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States
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4
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Li L, Belcher AM, Loke DK. Simulating selective binding of a biological template to a nanoscale architecture: a core concept of a clamp-based binding-pocket-favored N-terminal-domain assembly. NANOSCALE 2020; 12:24214-24227. [PMID: 33289758 DOI: 10.1039/d0nr07320b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The biological template and its mutants have vital significance in next generation remediation, electrochemical, photovoltaic, catalytic, sensing and digital memory devices. However, a microscopic model describing the biotemplating process is generally lacking on account of modelling complexity, which has prevented widespread commercial use of biotemplates. Here, we demonstrate M13-biotemplating kinetics in atomic resolution by leveraging large-scale molecular dynamics (MD) simulations. The model reveals the assembly of gold nanoparticles on two experimentally-based M13 phage types using full M13-capsid structural models and with polarizable gold nanoparticles in explicit solvent. Both mechanistic and structural insights into the selective binding affinity of the M13 phage to gold nanoparticles are obtained based on a previously unconsidered clamp-based binding-pocket-favored N-terminal-domain assembly and also on surface-peptide flexibility. These results provide a deeper level of understanding of protein sequence-based affinity and open the route for genetically engineering a wide range of 3D electrodes for high-density low-cost device integration.
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Affiliation(s)
- Lunna Li
- Department of Biological Engineering, David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA.
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5
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Peptides from diatoms and grasses harness phosphate ion binding to silica to help regulate biomaterial structure. Acta Biomater 2020; 112:286-297. [PMID: 32434074 DOI: 10.1016/j.actbio.2020.05.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 05/01/2020] [Accepted: 05/05/2020] [Indexed: 01/08/2023]
Abstract
Many life forms generate intricate submicron biosilica structures with various important biological functions. The formation of such structures, from the silicic acid in the waters and in the soil, is thought to be regulated by unique proteins with high repeats of specific amino acids and unusual sidechain modifications. Some silicifying proteins are characterized by high prevalence of basic amino acids in their primary structures. Lysine-rich domains are found, for instance, in diatom silaffin proteins and in the sorghum grass siliplant1 protein. These domains exhibit catalytic activity in silica chain condensation, owing to molecular interactions of the lysine amine groups with the forming mineral. The use of amine chemistry by two very remote organisms has motivated us to seek other molecular biosilicification processes that may be common to the two life forms. In diatom silaffins, domains rich in phosphoserine residues are thought to assist the assembly of silaffin molecules into an organic supra-structure which serves as a template for the silica to precipitate on. This mold, held by salt bridges between serine phosphates and lysine amines, dictates the shape of the silica particles formed. Yet, silica synthesized with the dephosphorylated silaffin in phosphate buffer showed similar morphology to the one prepared with the native protein, suggesting that a defined spatial arrangement of serine phosphates is not required to generate silica with the desired shape. Concurrently, free phosphates enhanced the activity of siliplant1 in silica formation. It is therefore beneficial to characterize the involvement of these anions as co-factors in regulated silicification by functional peptides from the two proteins and to understand whether they play similar molecular role in the mechanism of mineralization. Here we analyze the molecular interactions of free phosphate ions with silica and the silaffin peptide PL12 and separately with silica and siliplant1 peptide SLP1 in the two biomimetic silica products generated by the two peptides. MAS NMR measurements show that the phosphate ions interact with the peptides and at the same time may be forming bonds with the silica mineral. This bridging capability may add another avenue by which the structure of the silica material is influenced. A model for the molecular/ionic interactions at the bio-inorganic interface is described, which may have bearings for the role of phosphorylated residues beyond the function as intermolecular cross linkers or free phosphate ions as co-factors in regulation of silicification. STATEMENT OF SIGNIFICANCE: The manuscript addresses the question how proteins in diatoms and plants regulate the biosilica materials that are produced for various purposes in organisms. It uses preparation of silica in vitro with functional peptide derivatives from a sorghum grass protein and from a diatom silaffin protein separately to show that phosphate ions are important for the control that is achieved by these proteins on the final shape of the silica material produced. It portrays via magnetic resonance spectroscopic measurements, in atomic detail, the interface between atoms in the peptide, atoms on the surface of the silica formed and the phosphate ions that form chemical bonds with atoms on the silica as part of the mechanism of action of these peptides.
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6
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Hellner B, Stegmann AE, Pushpavanam K, Bailey MJ, Baneyx F. Phase Control of Nanocrystalline Inclusions in Bioprecipitated Titania with a Panel of Mutant Silica-Binding Proteins. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:8503-8510. [PMID: 32614593 DOI: 10.1021/acs.langmuir.0c01108] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The biomimetic route to inorganic synthesis presents an opportunity to produce complex materials with superior properties under ambient conditions and from nontoxic precursors. While there has been significant progress in using solid-binding peptides (SBPs), proteins, and organisms to produce a variety of inorganic and hybrid structures, it has been more challenging to understand the interplay of solution conditions and solid-binding peptide (SBP) sequence, structure, and self-association on synthetic outcomes. Here, we show that fusing the Car9 silica-binding peptide-but not the silaffin-derived R5 peptide-to superfolder green fluorescent protein (sfGFP) enhances the ability of micromolar concentrations of protein to induce rapid titania (TiO2) precipitation from acidified solutions of tetrakis(di-lactato)-oxo-titanate (TiBALDH). TiO2 is produced stoichiometrically and although predominantly amorphous, contains nanosized anatase and monoclinic TiO2(B) inclusions. Remarkably, the phase of these nanocrystallites can be tuned from about 80% TiO2(B) to about 65% anatase by using Car9 mutants impaired in their ability to drive the formation of higher-order sfGFP-Car9 oligomers. Our results suggest that the presentation of multiple basic side chains in an extended plane formed by SBP self-association is critical to template the formation of monoclinic crystallites and underscore the subtle influence that single or dual substitutions in dodecameric SBPs can exert on the yield and crystallinity of biomineralized inorganics.
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Affiliation(s)
- Brittney Hellner
- Department of Chemical Engineering, University of Washington, P.O. Box 351750, Seattle, Washington 98195, United States
| | - Amy E Stegmann
- Department of Chemical Engineering and Molecular Engineering & Sciences Institute, University of Washington, P.O. Box 351750, Seattle, Washington 98195, United States
| | - Karthik Pushpavanam
- Department of Chemical Engineering, University of Washington, P.O. Box 351750, Seattle, Washington 98195, United States
| | - Matthew J Bailey
- Department of Chemical Engineering, University of Washington, P.O. Box 351750, Seattle, Washington 98195, United States
| | - François Baneyx
- Department of Chemical Engineering, University of Washington, P.O. Box 351750, Seattle, Washington 98195, United States
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7
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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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8
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Mao CM, Sampath J, Sprenger KG, Drobny G, Pfaendtner J. Molecular Driving Forces in Peptide Adsorption to Metal Oxide Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:5911-5920. [PMID: 30955325 DOI: 10.1021/acs.langmuir.8b01392] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Molecular recognition between peptides and metal oxide surfaces is a fundamental process in biomineralization, self-assembly, and biocompatibility. Yet, the underlying driving forces and dominant mechanisms remain unclear, bringing obstacles to understand and control this process. To elucidate the mechanism of peptide/surface recognition, specifically the role of serine phosphorylation, we employed molecular dynamics simulation and metadynamics-enhanced sampling to study five artificial peptides, DDD, DSS, DpSpS, DpSpSGKK, and DpSKGpSK, interacting with two surfaces: rutile TiO2 and quartz SiO2. On both surfaces, we observe that phosphorylation increases the binding energy. However, the interfacial peptide conformation reveals a distinct binding mechanism on each surface. We also study the impact of peptide sequence to binding free energy and interfacial conformation on both surfaces, specifically the impact on the behavior of phosphorylated serine. Finally, the results are discussed in context of prior studies investigating the role of serine phosphorylation in peptide binding to silica.
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9
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Herold HM, Aigner TB, Grill CE, Krüger S, Taubert A, Scheibel T. SpiderMAEn: recombinant spider silk-based hybrid materials for advanced energy technology. BIOINSPIRED BIOMIMETIC AND NANOBIOMATERIALS 2019. [DOI: 10.1680/jbibn.18.00007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
| | | | | | - Stefanie Krüger
- Institute of Chemistry, University of Potsdam, Potsdam, Germany
| | - Andreas Taubert
- Institute of Chemistry, University of Potsdam, Potsdam, Germany
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10
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Hernández-Gordillo A, Hernández-Arana A, Campero-Celis A, Vera-Robles LI. TiBALDH as a precursor for biomimetic TiO2 synthesis: stability aspects in aqueous media. RSC Adv 2019; 9:34559-34566. [PMID: 35529993 PMCID: PMC9073908 DOI: 10.1039/c9ra05923g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 10/17/2019] [Indexed: 11/21/2022] Open
Abstract
Titanium(iv) bis(ammonium lactate)dihydroxide (TiBALDH) is a commercially available reagent frequently used to synthesize TiO2. Particularly, for the biomimetic synthesis of TiO2, TiBALDH is the preferred precursor because it can be mixed in aqueous solutions with no apparent hydrolysis or condensation reactions. Thus, proteins or other biomolecules can be used as a template in aqueous systems for the synthesis of TiO2 from TiBALDH. Nevertheless, there is evidence that TiBALDH is in equilibrium with TiO2, and even, the principal structure of the complex has been suggested as [Ti4O4(lactate)8]8−. Since that chemical equilibrium depends on the polarity of the solvent, in this work we explored a diversity of media to test the chemical stability of TiBALDH and its equilibrium with TiO2 at room temperature. TiBALDH (2.078 M) contains particles of 18.6 ± 7.3 nm in size, if it is diluted with deionized water, the particles reach a size of 5.2 ± 1.7 nm, which suggest that intermolecular interactions form polymers of titanium lactate complexes reversibly, reaching equilibrium after 10 hours. Typical buffer systems were tested; TiBALDH reacted rapidly only with phosphate groups, even if the source came from DNA. Therefore, phosphate buffer must be avoided in biomineralization TiO2 synthesis. In solutions of TiBALDH at basic pH, condensation reactions are promoted to form a gel containing anatase nanoparticles, but if the solutions are acidic, monodisperse anatase nanoparticles of ∼5 nm were observed. The results show that the commercial reagent TiBALDH contains many species of titanium lactate complexes in equilibrium with TiO2, and it is affected by the concentration, time, pH, and several ions. This peculiar behavior must be taken into account when this precursor is used and it could be useful to develop novel synthesis routes of macrostructures with biomolecules in aqueous systems. Factors affecting TiO2 biomineralization using TiBALDH as precursor.![]()
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Affiliation(s)
- Armin Hernández-Gordillo
- Departamento de Química
- Área de Biofisicoquímica
- Universidad Autónoma Metropolitana-Iztapalapa
- CDMX
- Mexico
| | - Andrés Hernández-Arana
- Departamento de Química
- Área de Biofisicoquímica
- Universidad Autónoma Metropolitana-Iztapalapa
- CDMX
- Mexico
| | - Antonio Campero-Celis
- Departamento de Química
- Área de Química Inorgánica
- Universidad Autónoma Metropolitana-Iztapalapa
- CDMX
- Mexico
| | - L. Irais Vera-Robles
- Departamento de Química
- Área de Biofisicoquímica
- Universidad Autónoma Metropolitana-Iztapalapa
- CDMX
- Mexico
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11
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Limo MJ, Sola-Rabada A, Boix E, Thota V, Westcott ZC, Puddu V, Perry CC. Interactions between Metal Oxides and Biomolecules: from Fundamental Understanding to Applications. Chem Rev 2018; 118:11118-11193. [PMID: 30362737 DOI: 10.1021/acs.chemrev.7b00660] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Metallo-oxide (MO)-based bioinorganic nanocomposites promise unique structures, physicochemical properties, and novel biochemical functionalities, and within the past decade, investment in research on materials such as ZnO, TiO2, SiO2, and GeO2 has significantly increased. Besides traditional approaches, the synthesis, shaping, structural patterning, and postprocessing chemical functionalization of the materials surface is inspired by strategies which mimic processes in nature. Would such materials deliver new technologies? Answering this question requires the merging of historical knowledge and current research from different fields of science. Practically, we need an effective defragmentation of the research area. From our perspective, the superficial accounting of material properties, chemistry of the surfaces, and the behavior of biomolecules next to such surfaces is a problem. This is particularly of concern when we wish to bridge between technologies in vitro and biotechnologies in vivo. Further, besides the potential practical technological efficiency and advantages such materials might exhibit, we have to consider the wider long-term implications of material stability and toxicity. In this contribution, we present a critical review of recent advances in the chemistry and engineering of MO-based biocomposites, highlighting the role of interactions at the interface and the techniques by which these can be studied. At the end of the article, we outline the challenges which hamper progress in research and extrapolate to developing and promising directions including additive manufacturing and synthetic biology that could benefit from molecular level understanding of interactions occurring between inanimate (abiotic) and living (biotic) materials.
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Affiliation(s)
- Marion J Limo
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom.,Interface and Surface Analysis Centre, School of Pharmacy , University of Nottingham , University Park, Nottingham NG7 2RD , United Kingdom
| | - Anna Sola-Rabada
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom
| | - Estefania Boix
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom.,Department of Bioproducts and Biosystems , Aalto University , P.O. Box 16100, FI-00076 Aalto , Finland
| | - Veeranjaneyulu Thota
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom
| | - Zayd C Westcott
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom
| | - Valeria Puddu
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom
| | - Carole C Perry
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom
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12
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Sharifi E, Shams E, Salimi A, Noorbakhsh A, Amini MK. Nickel-cysteine nanoparticles: Synthesis, characterization and application for direct electron transfer studies. Colloids Surf B Biointerfaces 2018; 165:135-143. [PMID: 29475035 DOI: 10.1016/j.colsurfb.2018.01.052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 01/21/2018] [Accepted: 01/26/2018] [Indexed: 10/18/2022]
Abstract
Nickel-cysteine nanostructures (Ni-CysNSs) are prepared by a simple wet chemistry procedure under mild conditions, in which l-cysteine acts both as precursor and structure directing agent. This method involves the reaction of nickel chloride with l-cysteine, followed by simultaneous adjusting the pH in the range of 6-8.5 by addition of an aqueous NaOH solution. The structure and morphology of the prepared products are characterized using various techniques, including X-ray powder diffraction (XRD), Fourier transform-infrared (FT-IR) spectroscopy, CHNS elemental analysis, Field emission scanning electron microscopy (FESEM) and Transmission electron microscopy (TEM). The effects of a variety of synthetic conditions on the structure and morphology of the Ni-CysNSs are studied, including the molar ratio of precursors, dispersing solvent, pH value of the reaction solution, reaction time and reaction temperature. FT-IR measurements reveal that synthesized Ni-CysNSs contain many free carboxylic groups on the surface, which could be used as binding sites to anchor biological molecules in order to develop various bioelectronic devices. In this work, the applicability of synthesized nanostructure in biosensing is studied by using Ni-CysNSs as a platform for covalently immobilization of GOx, as a model enzyme, on the surface. Cyclic voltammetric measurements reveal that the direct electron transfer from the active center of GOx to the glassy carbon electrode facilitated upon its immobilization on the Ni-CysNSs film. More importantly, GOx preserves its native structure and catalytic activity for the oxidation of glucose after immobilization on the Ni-CysNSs surface. The electrocatalytic characteristics of the GC/NiCysNS/GOx electrode toward the oxidation of glucose are investigated by cyclic voltammetry, which displayed acceptable electrical and sensing performance. Simple preparation of Ni-CysNPs and their biocompatibility make them attractive platforms for integration of various biomolecules such as proteine/enzymes with surface.
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Affiliation(s)
- Ensiyeh Sharifi
- Chemistry Department, University of Isfahan, Hezar Jarib, Isfahan, 81746-73441, Iran
| | - Esmaeil Shams
- Chemistry Department, University of Isfahan, Hezar Jarib, Isfahan, 81746-73441, Iran.
| | - Abdollah Salimi
- Department of Chemistry, University of Kurdistan, 66177-15175, Sanandaj, Iran; Research Center for Nanotechnology, University of Kurdistan, 66177-15175, Sanandaj, Iran
| | - Abdollah Noorbakhsh
- Department of Nanotechnology Engineering, Faculty of Advanced Science and Technology, University of Isfahan, Hezar Jarib, Isfahan, 81746-73441, Iran
| | - Mohammad K Amini
- Chemistry Department, University of Isfahan, Hezar Jarib, Isfahan, 81746-73441, Iran
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13
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Buckle EL, Lum JS, Roehrich AM, Stote RE, Vandermoon B, Dracinsky M, Filocamo SF, Drobny GP. Serine-Lysine Peptides as Mediators for the Production of Titanium Dioxide: Investigating the Effects of Primary and Secondary Structures Using Solid-State NMR Spectroscopy and DFT Calculations. J Phys Chem B 2018; 122:4708-4718. [PMID: 29595262 DOI: 10.1021/acs.jpcb.8b00745] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A biomimetic approach to the formation of titania (TiO2) nanostructures is desirable because of the mild conditions required in this form of production. We have identified a series of serine-lysine peptides as candidates for the biomimetic production of TiO2 nanostructures. We have assayed these peptides for TiO2-precipitating activity upon exposure to titanium bis(ammonium lactato)dihydroxide and have characterized the resulting coprecipitates using scanning electron microscopy. A subset of these assayed peptides efficiently facilitates the production of TiO2 nanospheres. Here, we investigate the process of TiO2 nanosphere formation mediated by the S-K peptides KSSKK- and SKSK3SKS using one-dimensional and two-dimensional solid-state NMR (ssNMR) on peptide samples with uniformly 13C-enriched residues. ssNMR is used to assign 13C chemical shifts (CSs) site-specifically in each free peptide and TiO2-embedded peptide, which are used to derive secondary structures in the neat and TiO2 coprecipitated states. The backbone 13C CSs are used to assess secondary structural changes undergone during the coprecipitation process. Side-chain 13C CS changes are analyzed with density functional theory calculations and used to determine side-chain conformational changes that occur upon coprecipitation with TiO2 and to determine surface orientation of lysine side chains in TiO2-peptide composites.
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Affiliation(s)
- Erika L Buckle
- Department of Chemistry , University of Washington , Box 351700 , Seattle , Washington 98195 , United States
| | - June S Lum
- Biological Sciences and Technology Team , US Army Natick Soldier Research, Development and Engineering Center , Natick , Massachusetts 01760 , United States
| | - Adrienne M Roehrich
- Department of Chemistry , University of Washington , Box 351700 , Seattle , Washington 98195 , United States
| | - Robert E Stote
- Biological Sciences and Technology Team , US Army Natick Soldier Research, Development and Engineering Center , Natick , Massachusetts 01760 , United States
| | - Branden Vandermoon
- Department of Chemistry , University of Washington , Box 351700 , Seattle , Washington 98195 , United States
| | - Martin Dracinsky
- Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo 2 , 16610 Prague , Czech Republic
| | - Shaun F Filocamo
- Biological Sciences and Technology Team , US Army Natick Soldier Research, Development and Engineering Center , Natick , Massachusetts 01760 , United States
| | - Gary P Drobny
- Department of Chemistry , University of Washington , Box 351700 , Seattle , Washington 98195 , United States
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14
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Krüger S, Schwarze M, Baumann O, Günter C, Bruns M, Kübel C, Szabó DV, Meinusch R, Bermudez VDZ, Taubert A. Bombyx mori silk/titania/gold hybrid materials for photocatalytic water splitting: combining renewable raw materials with clean fuels. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2018; 9:187-204. [PMID: 29441264 PMCID: PMC5789386 DOI: 10.3762/bjnano.9.21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 12/12/2017] [Indexed: 06/08/2023]
Abstract
The synthesis, structure, and photocatalytic water splitting performance of two new titania (TiO2)/gold(Au)/Bombyx mori silk hybrid materials are reported. All materials are monoliths with diameters of up to ca. 4.5 cm. The materials are macroscopically homogeneous and porous with surface areas between 170 and 210 m2/g. The diameter of the TiO2 nanoparticles (NPs) - mainly anatase with a minor fraction of brookite - and the Au NPs are on the order of 5 and 7-18 nm, respectively. Addition of poly(ethylene oxide) to the reaction mixture enables pore size tuning, thus providing access to different materials with different photocatalytic activities. Water splitting experiments using a sunlight simulator and a Xe lamp show that the new hybrid materials are effective water splitting catalysts and produce up to 30 mmol of hydrogen per 24 h. Overall the article demonstrates that the combination of a renewable and robust scaffold such as B. mori silk with a photoactive material provides a promising approach to new monolithic photocatalysts that can easily be recycled and show great potential for application in lightweight devices for green fuel production.
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Affiliation(s)
- Stefanie Krüger
- Institute of Chemistry, University of Potsdam, D-14476 Potsdam, Germany
| | - Michael Schwarze
- Institute of Chemistry, Technical University Berlin, D-10623 Berlin, Germany
| | - Otto Baumann
- Institute of Biochemistry and Biology, University of Potsdam, D-14476 Potsdam, Germany
| | - Christina Günter
- Institute of Earth and Environmental Science, University of Potsdam, D-14476 Potsdam, Germany
| | - Michael Bruns
- Institute for Applied Materials (IAM) and Karlsruhe Nano Micro Facility (KNMF), Karlsruhe Institute of Technology (KIT), D-76344 Eggenstein-Leopoldshafen, Germany
| | - Christian Kübel
- Institute of Nanotechnology (INT) and Karlsruhe Nano Micro Facility (KNMF), Karlsruhe Institute of Technology (KIT), D-76344 Eggenstein-Leopoldshafen, Germany
| | - Dorothée Vinga Szabó
- Institute for Applied Materials (IAM) and Karlsruhe Nano Micro Facility (KNMF), Karlsruhe Institute of Technology (KIT), D-76344 Eggenstein-Leopoldshafen, Germany
| | - Rafael Meinusch
- Institute of Physical Chemistry, Justus-Liebig-University Giessen, D-35392 Giessen, Germany
| | - Verónica de Zea Bermudez
- Department of Chemistry and CQ-VR, University of Trás-os-Montes e Alto Douro, Pt-5001-801 Vila Real, Portugal
| | - Andreas Taubert
- Institute of Chemistry, University of Potsdam, D-14476 Potsdam, Germany
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15
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Zerfaß C, Buchko GW, Shaw WJ, Hobe S, Paulsen H. Secondary structure and dynamics study of the intrinsically disordered silica-mineralizing peptide P 5 S 3 during silicic acid condensation and silica decondensation. Proteins 2017; 85:2111-2126. [PMID: 28799215 PMCID: PMC5760248 DOI: 10.1002/prot.25366] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 08/07/2017] [Accepted: 08/08/2017] [Indexed: 11/08/2022]
Abstract
The silica forming repeat R5 of sil1 from Cylindrotheca fusiformis was the blueprint for the design of P5 S3 , a 50-residue peptide which can be produced in large amounts by recombinant bacterial expression. It contains 5 protein kinase A target sites and is highly cationic due to 10 lysine and 10 arginine residues. In the presence of supersaturated orthosilicic acid P5 S3 enhances silica-formation whereas it retards the dissolution of amorphous silica (SiO2 ) at globally undersaturated concentrations. The secondary structure of P5 S3 during these 2 processes was studied by circular dichroism (CD) spectroscopy, complemented by nuclear magnetic resonance (NMR) spectroscopy of the peptide in the absence of silicate. The NMR studies of dual-labeled (13 C, 15 N) P5 S3 revealed a disordered structure at pH 2.8 and 4.5. Within the pH range of 4.5-9.5 in the absence of silicic acid, the CD data showed a disordered structure with the suggestion of some polyproline II character. Upon silicic acid polymerization and during dissolution of preformed silica, the CD spectrum of P5 S3 indicated partial transition into an α-helical conformation which was transient during silica-dissolution. The secondary structural changes observed for P5 S3 correlate with the presence of oligomeric/polymeric silicic acid, presumably due to P5 S3 -silica interactions. These P5 S3 -silica interactions appear, at least in part, ionic in nature since negatively charged dodecylsulfate caused similar perturbations to the P5 S3 CD spectrum as observed with silica, while uncharged ß-d-dodecyl maltoside did not affect the CD spectrum of P5 S3 . Thus, with an associated increase in α-helical character, P5 S3 influences both the condensation of silicic acid into silica and its decondensation back to silicic acid.
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Affiliation(s)
- Christian Zerfaß
- Institute of Molecular Physiology, Johannes Gutenberg University, Johannes-von-Müller-Weg 6, 55128 Mainz, Germany
- Graduate School Materials Science in Mainz, Staudinger Weg 9, 55128 Mainz, Germany
| | - Garry W. Buchko
- Pacific Northwest National Laboratory, Richland, WA 99354, United States
| | - Wendy J. Shaw
- Pacific Northwest National Laboratory, Richland, WA 99354, United States
| | - Stephan Hobe
- Institute of Molecular Physiology, Johannes Gutenberg University, Johannes-von-Müller-Weg 6, 55128 Mainz, Germany
| | - Harald Paulsen
- Institute of Molecular Physiology, Johannes Gutenberg University, Johannes-von-Müller-Weg 6, 55128 Mainz, Germany
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16
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Walsh TR. Molecular Modelling of Peptide-Based Materials for Biomedical Applications. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1030:37-50. [PMID: 29081049 DOI: 10.1007/978-3-319-66095-0_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
The molecular-level interactions between peptides and medically-relevant biomaterials, including nanoparticles, have the potential to advance technologies aimed at improving performance for medical applications including tissue implants and regenerative medicine. Peptides can possess materials-selective non-covalent adsorption properties, which in this instance can be exploited to enhance the biocompatibility and possible multi-functionality of medical implant materials. However, at present, their successful implementation in medical applications is largely on a trial-and-error basis, in part because a deep comprehension of general structure/function relationships at these interfaces is currently lacking. Molecular simulation approaches can complement experimental characterisation techniques and provide a wealth of relevant details at the atomic scale. In this Chapter, progress and prospects for advancing peptide-mediated medical implant surface treatments via molecular simulation is summarised for two of the most widely-found medical implant interfaces, titania and hydroxyapatite.
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Affiliation(s)
- Tiffany R Walsh
- Institute for Frontier Materials, Deakin University, Geelong, VIC, 3216, Australia.
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17
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Buckle EL, Roehrich A, Vandermoon B, Drobny GP. Comparative Study of Secondary Structure and Interactions of the R5 Peptide in Silicon Oxide and Titanium Oxide Coprecipitates Using Solid-State NMR Spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10517-10524. [PMID: 28898103 PMCID: PMC6786483 DOI: 10.1021/acs.langmuir.7b01048] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A biomimetic, peptide-mediated approach to inorganic nanostructure formation is of great interest as an alternative to industrial production methods. To investigate the role of peptide structure on silica (SiO2) and titania (TiO2) morphologies, we use the R5 peptide domain derived from the silaffin protein to produce uniform SiO2 and TiO2 nanostructures from the precursor silicic acid and titanium bis(ammonium lactato)dihydroxide, respectively. The resulting biosilica and biotitania nanostructures are characterized using scanning electron microscopy. To investigate the process of R5-mediated SiO2 and TiO2 formation, we carry out 1D and 2D solid-state NMR (ssNMR) studies on R5 samples with uniformly 13C- and 15N-labeled residues to determine the backbone and side-chain chemical shifts. 13C chemical shift data are in turn used to determine peptide backbone torsion angles and secondary structure for the R5 peptide neat, in silica, and in titania. We are thus able to assess the impact of the different mineral environments on peptide structure, and we can further elucidate from 13C chemical shifts change the degree to which various side chains are in close proximity to the mineral phases. These comparisons add to the understanding of the role of R5 and its structure in both SiO2 and TiO2 formation.
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Affiliation(s)
- Erika L Buckle
- Department of Chemistry, University of Washington , Box 351700, Seattle, Washington 98195, United States
| | - Adrienne Roehrich
- Department of Chemistry, University of Washington , Box 351700, Seattle, Washington 98195, United States
| | - Branden Vandermoon
- Department of Chemistry, University of Washington , Box 351700, Seattle, Washington 98195, United States
| | - Gary P Drobny
- Department of Chemistry, University of Washington , Box 351700, Seattle, Washington 98195, United States
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18
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Walsh TR, Knecht MR. Biointerface Structural Effects on the Properties and Applications of Bioinspired Peptide-Based Nanomaterials. Chem Rev 2017; 117:12641-12704. [DOI: 10.1021/acs.chemrev.7b00139] [Citation(s) in RCA: 132] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Tiffany R. Walsh
- Institute
for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Marc R. Knecht
- Department
of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146, United States
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19
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Truong QD, Dien LX, Vo DVN, Le TS. Controlled synthesis of titania using water-soluble titanium complexes: A review. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.04.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Bawazer LA, McNally CS, Empson CJ, Marchant WJ, Comyn TP, Niu X, Cho S, McPherson MJ, Binks BP, deMello A, Meldrum FC. Combinatorial microfluidic droplet engineering for biomimetic material synthesis. SCIENCE ADVANCES 2016; 2:e1600567. [PMID: 27730209 PMCID: PMC5055387 DOI: 10.1126/sciadv.1600567] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 08/31/2016] [Indexed: 05/19/2023]
Abstract
Although droplet-based systems are used in a wide range of technologies, opportunities for systematically customizing their interface chemistries remain relatively unexplored. This article describes a new microfluidic strategy for rapidly tailoring emulsion droplet compositions and properties. The approach uses a simple platform for screening arrays of droplet-based microfluidic devices and couples this with combinatorial selection of the droplet compositions. Through the application of genetic algorithms over multiple screening rounds, droplets with target properties can be rapidly generated. The potential of this method is demonstrated by creating droplets with enhanced stability, where this is achieved by selecting carrier fluid chemistries that promote titanium dioxide formation at the droplet interfaces. The interface is a mixture of amorphous and crystalline phases, and the resulting composite droplets are biocompatible, supporting in vitro protein expression in their interiors. This general strategy will find widespread application in advancing emulsion properties for use in chemistry, biology, materials, and medicine.
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Affiliation(s)
- Lukmaan A. Bawazer
- School of Chemistry, University of Leeds, Leeds, LS2 9JT, U.K
- Corresponding author. (F.C.M.); (L.A.B.)
| | | | | | | | - Tim P. Comyn
- Institute for Materials Research, School of Process, Environmental and Materials Engineering, University of Leeds, Leeds LS2 9JT, U.K
| | - Xize Niu
- Engineering and the Environment, University of Southampton, Southampton SO17 1BJ, U.K
| | - Soongwon Cho
- Samsung Display, 465, Beonyeong-ro, Seobuk-gu, Cheonan-si, Chungcheongnam-do, Republic of Korea
| | - Michael J. McPherson
- School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, U.K
| | - Bernard P. Binks
- Surfactant & Colloid Group, Department of Chemistry, University of Hull, Hull HU6 7RX, U.K
| | - Andrew deMello
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Fiona C. Meldrum
- School of Chemistry, University of Leeds, Leeds, LS2 9JT, U.K
- Corresponding author. (F.C.M.); (L.A.B.)
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21
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Sultan AM, Westcott ZC, Hughes ZE, Palafox-Hernandez JP, Giesa T, Puddu V, Buehler MJ, Perry CC, Walsh TR. Aqueous Peptide-TiO2 Interfaces: Isoenergetic Binding via Either Entropically or Enthalpically Driven Mechanisms. ACS APPLIED MATERIALS & INTERFACES 2016; 8:18620-18630. [PMID: 27355097 DOI: 10.1021/acsami.6b05200] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A major barrier to the systematic improvement of biomimetic peptide-mediated strategies for the controlled growth of inorganic nanomaterials in environmentally benign conditions lies in the lack of clear conceptual connections between the sequence of the peptide and its surface binding affinity, with binding being facilitated by noncovalent interactions. Peptide conformation, both in the adsorbed and in the nonadsorbed state, is the key relationship that connects peptide-materials binding with peptide sequence. Here, we combine experimental peptide-titania binding characterization with state-of-the-art conformational sampling via molecular simulations to elucidate these structure/binding relationships for two very different titania-binding peptide sequences. The two sequences (Ti-1, QPYLFATDSLIK; Ti-2, GHTHYHAVRTQT) differ in their overall hydropathy, yet via quartz-crystal microbalance measurements and predictions from molecular simulations, we show these sequences both support very similar, strong titania-binding affinities. Our molecular simulations reveal that the two sequences exhibit profoundly different modes of surface binding, with Ti-1 acting as an entropically driven binder while Ti-2 behaves as an enthalpically driven binder. The integrated approach presented here provides a rational basis for peptide sequence engineering to achieve the in situ growth and organization of titania nanostructures in aqueous media and for the design of sequences suitable for a range of technological applications that involve the interface between titania and biomolecules.
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Affiliation(s)
- Anas M Sultan
- Institute for Frontier Materials, Deakin University , Geelong, Victoria 3216, Australia
| | - Zayd C Westcott
- Interdisciplinary Biomedical Research Centre, School of Science and Technology, Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS, United Kingdom
| | - Zak E Hughes
- Institute for Frontier Materials, Deakin University , Geelong, Victoria 3216, Australia
| | | | - Tristan Giesa
- Laboratory for Atomistic and Molecular Mechanics (LAMM), Department of Civil and Environmental Engineering, Massachusetts Institute of Technology , 77 Massachusetts Ave, Cambridge, Massachusetts 02139, United States
| | - Valeria Puddu
- Interdisciplinary Biomedical Research Centre, School of Science and Technology, Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS, United Kingdom
| | - Markus J Buehler
- Laboratory for Atomistic and Molecular Mechanics (LAMM), Department of Civil and Environmental Engineering, Massachusetts Institute of Technology , 77 Massachusetts Ave, Cambridge, Massachusetts 02139, United States
| | - Carole C Perry
- Interdisciplinary Biomedical Research Centre, School of Science and Technology, Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS, United Kingdom
| | - Tiffany R Walsh
- Institute for Frontier Materials, Deakin University , Geelong, Victoria 3216, Australia
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22
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Sawada T, Matsumiya K, Serizawa T. Polymer-binding Peptides as Dispersants for the Preparation of Polymer Nanoparticles: Application of Peptides to Structurally Similar Non-target Polymers. CHEM LETT 2015. [DOI: 10.1246/cl.150215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Toshiki Sawada
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology
| | - Kisei Matsumiya
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo
| | - Takeshi Serizawa
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology
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23
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Sultan AM, Hughes ZE, Walsh TR. Binding affinities of amino acid analogues at the charged aqueous titania interface: implications for titania-binding peptides. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:13321-13329. [PMID: 25317483 DOI: 10.1021/la503312d] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Despite the extensive utilization of biomolecule-titania interfaces, biomolecular recognition and interactions at the aqueous titania interface remain far from being fully understood. Here, atomistic molecular dynamics simulations, in partnership with metadynamics, are used to calculate the free energy of adsorption of different amino acid side chain analogues at the negatively-charged aqueous rutile TiO2 (110) interface, under conditions corresponding with neutral pH. Our calculations predict that charged amino acid analogues have a relatively high affinity to the titania surface, with the arginine analogue predicted to be the strongest binder. Interactions between uncharged amino acid analogues and titania are found to be repulsive or weak at best. All of the residues that bound to the negatively-charged interface show a relatively stronger adsorption compared with the charge-neutral interface, including the negatively-charged analogue. Of the analogues that are found to bind to the titania surface, the rank ordering of the binding affinities is predicted to be "arginine" > "lysine" ≈ aspartic acid > "serine". This is the same ordering as was found previously for the charge-neutral aqueous titania interface. Our results show very good agreement with available experimental data and can provide a baseline for the interpretation of peptide-TiO2 adsorption data.
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Affiliation(s)
- Anas M Sultan
- Institute for Frontier Materials, Deakin University , Geelong, VIC 3216, Australia
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24
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Fattakhova-Rohlfing D, Zaleska A, Bein T. Three-Dimensional Titanium Dioxide Nanomaterials. Chem Rev 2014; 114:9487-558. [DOI: 10.1021/cr500201c] [Citation(s) in RCA: 303] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Dina Fattakhova-Rohlfing
- Department
of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU), Butenandtstrasse 5-13 (E), 81377 Munich, Germany
| | - Adriana Zaleska
- Department
of Environmental Technology, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308 Gdansk, Poland
| | - Thomas Bein
- Department
of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU), Butenandtstrasse 5-13 (E), 81377 Munich, Germany
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25
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Janairo JIB, Sakaguchi K. Effects of Buffer on the Structure and Catalytic Activity of Palladium Nanomaterials Formed by Biomineralization. CHEM LETT 2014. [DOI: 10.1246/cl.140405] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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26
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Affiliation(s)
- Lixia Sang
- Key
Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry
of Education and Key Laboratory of Heat Transfer and Energy Conversion,
Beijing Municipality, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
| | - Yixin Zhao
- School
of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Clemens Burda
- Center
for Chemical Dynamics and Nanomaterials Research, Department of Chemistry, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States
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27
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Hernández-Gordillo A, Hernández-Arana A, Campero A, Vera-Robles LI. Biomimetic sol-gel synthesis of TiO₂ and SiO₂ nanostructures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:4084-4093. [PMID: 24693937 DOI: 10.1021/la500203k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report the heptapeptide-mediated biomineralization of titanium dioxide nanoparticles from titanium alkoxides. We evaluated the influence of pH on the biomineralized products and found that nanostructured TiO2 was formed in the absence of external ions (water only) at pH ~ 6.5. Several variants (mutants) of the peptides with different properties (i.e., different charges, isoelectric points (pIs), and sequences) were designed and tested in biomineralization experiments. Acid-catalyzed experiments were run using the H1 (HKKPSKS) peptide at room temperature, which produced anatase nanoparticles (~5 nm in size) for the first time via a heptapeptide and sol-gel approach. In addition, the peptide H1 was used to synthesize SiO2 nanoparticles. The influence of the pH and the added ions were monitored: at higher pH levels (8-9), SiO2 nanoparticles (20-30 nm in size) were obtained. In addition, whereas borate and Tris ions allowed the formation of colloidal systems, phosphate ions were unable to produce sols. The results presented here demonstrate that biomineralization depends on the sequence and charge of the peptide, and ions in solution can optimize the formation of nanostructures.
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Affiliation(s)
- Armin Hernández-Gordillo
- Departamento de Química, Área de Biofisicoquímica, Universidad Autónoma Metropolitana-Iztapalapa , San Rafael Atlixco No. 186, Col. Vicentina, 09340 México D.F., Mexico
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28
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Liu C, Jiang Z, Tong Z, Li Y, Yang D. Biomimetic synthesis of inorganic nanocomposites by a de novo designed peptide. RSC Adv 2014. [DOI: 10.1039/c3ra44630a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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29
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Tong Z, Jiang Y, Yang D, Shi J, Zhang S, Liu C, Jiang Z. Biomimetic and bioinspired synthesis of titania and titania-based materials. RSC Adv 2014. [DOI: 10.1039/c3ra47336h] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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30
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Boix E, Puddu V, Perry CC. Preparation of hexagonal GeO2 particles with particle size and crystallinity controlled by peptides, silk and silk-peptide chimeras. Dalton Trans 2014; 43:16902-10. [DOI: 10.1039/c4dt01974a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of α-quartz like (hexagonal) GeO2 by a biomimetic approach using peptides, silk and silk-peptide chimeras to control precipitation yield, particle morphology, size and crystallinity of the mineral.
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Affiliation(s)
- Estefania Boix
- Interdisciplinary Biomedical Research Centre
- School of Science and Technology
- Nottingham Trent University
- Clifton Lane, UK
| | - Valeria Puddu
- Interdisciplinary Biomedical Research Centre
- School of Science and Technology
- Nottingham Trent University
- Clifton Lane, UK
| | - Carole C. Perry
- Interdisciplinary Biomedical Research Centre
- School of Science and Technology
- Nottingham Trent University
- Clifton Lane, UK
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