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Beg MS, Gibbons EN, Gavalas S, Holden MA, Krysmann M, Kelarakis A. Antimicrobial coatings based on amine-terminated graphene oxide and Nafion with remarkable thermal resistance. NANOSCALE ADVANCES 2024; 6:2594-2601. [PMID: 38752132 PMCID: PMC11093269 DOI: 10.1039/d3na01154b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 03/04/2024] [Indexed: 05/18/2024]
Abstract
We present a novel type of layer-by-layer (LbL) waterborne coating based on Nafion and amine-terminated graphene oxide (GO-NH2) that inhibits the growth of Escherichia coli and Staphylococcus aureus by more than 99% and this performance is not compromised upon extensive thermal annealing at 200 °C. Quartz crystal microbalance (QCM) sensorgrams allow the real time monitoring of the build-up of the LbL assemblies, a process that relies on the strong electrostatic interactions between Nafion (pH = 2.7, ζ = -54.8 mV) and GO-NH2 (pH = 2, ζ = 26.7 mV). Atomic force microscopy (AFM), contact angle and zeta potential measurements were used to characterise the multilayer assemblies. We demonstrate here that Nafion/GO-NH2 advanced coatings can offer drug-free and long-lasting solutions to microbial colonization and can withstand dry heat sterilization, without any decline in their performance.
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Affiliation(s)
- Mohammed Suleman Beg
- UCLan Research Centre for Smart Materials, School of Pharmacy and Biomedical Sciences, University of Central Lancashire Preston PR1 2HE UK
| | - Ella Nicole Gibbons
- UCLan Research Centre for Smart Materials, School of Pharmacy and Biomedical Sciences, University of Central Lancashire Preston PR1 2HE UK
| | - Spyridon Gavalas
- UCLan Research Centre for Smart Materials, School of Pharmacy and Biomedical Sciences, University of Central Lancashire Preston PR1 2HE UK
| | - Mark A Holden
- UCLan Research Centre for Smart Materials, School of Pharmacy and Biomedical Sciences, University of Central Lancashire Preston PR1 2HE UK
| | - Marta Krysmann
- School of Medicine and Dentistry, University of Central Lancashire Preston PR1 2HE UK
| | - Antonios Kelarakis
- UCLan Research Centre for Smart Materials, School of Pharmacy and Biomedical Sciences, University of Central Lancashire Preston PR1 2HE UK
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2
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Verma G, Hostert J, Summerville AA, Robang AS, Garcia Carcamo R, Paravastu AK, Getman RB, Duval CE, Renner J. Investigation of Rare Earth Element Binding to a Surface-Bound Affinity Peptide Derived from EF-Hand Loop I of Lanmodulin. ACS APPLIED MATERIALS & INTERFACES 2024; 16:16912-16926. [PMID: 38527460 PMCID: PMC10995902 DOI: 10.1021/acsami.3c17565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/17/2024] [Accepted: 02/27/2024] [Indexed: 03/27/2024]
Abstract
Bioinspired strategies have been given extensive attention for the recovery of rare earth elements (REEs) from waste streams because of their high selectivity, regeneration potential, and sustainability as well as low cost. Lanmodulin protein is an emerging biotechnology that is highly selective for REE binding. Mimicking lanmodulin with shorter peptides is advantageous because they are simpler and potentially easier to manipulate and optimize. Lanmodulin-derived peptides have been found to bind REEs, but their properties have not been explored when immobilized on solid substrates, which is required for many advanced separation technologies. Here, two peptides, LanM1 and scrambled LanM1, are designed from the EF-hand loop 1 of lanmodulin and investigated for their binding affinity toward different REEs when surface-bound. First, the ability of LanM1 to bind REEs was confirmed and characterized in solution using circular dichroism (CD), nuclear magnetic resonance (NMR), and molecular dynamics (MD) simulations for Ce(III) ions. Isothermal titration calorimetry (ITC) was used to further analyze the binding of the LanM1 to Ce(III), Nd(III), Eu(III), and Y(III) ions and in low-pH conditions. The performance of the immobilized peptides on a model gold surface was examined using a quartz crystal microbalance with dissipation (QCM-D). The studies show that the LanM1 peptide has a stronger REE binding affinity than that of scrambled LanM1 when in solution and when immobilized on a gold surface. QCM-D data were fit to the Langmuir adsorption model to estimate the surface-bound dissociation constant (Kd) of LanM1 with Ce(III) and Nd(III). The results indicate that LanM1 peptides maintain a high affinity for REEs when immobilized, and surface-bound LanM1 has no affinity for potential competitor calcium and copper ions. The utility of surface-bound LanM1 peptides was further demonstrated by immobilizing them to gold nanoparticles (GNPs) and capturing REEs from solution in experiments utilizing an Arsenazo III-based colorimetric dye displacement assay and ultraviolet-visible (UV-vis) spectrophotometry. The saturated adsorption capacity of GNPs was estimated to be around 3.5 μmol REE/g for Ce(III), Nd(III), Eu(III), and Y(III) ions, with no binding of non-REE Ca(II) ions observed.
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Affiliation(s)
- Geeta Verma
- Department
of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Jacob Hostert
- Department
of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Alex A. Summerville
- Department
of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Alicia S. Robang
- School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Ricardo Garcia Carcamo
- Department
of Chemical and Biomolecular Engineering, Ohio State University, Columbus, Ohio 43210, United States
| | - Anant K. Paravastu
- School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- Parker
H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, 315 Ferst Drive, Atlanta, Georgia 30332, United States
| | - Rachel B. Getman
- Department
of Chemical and Biomolecular Engineering, Ohio State University, Columbus, Ohio 43210, United States
| | - Christine E. Duval
- Department
of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Julie Renner
- Department
of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
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3
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Pramounmat N, Asaei S, Hostert JD, Young K, von Recum HA, Renner JN. Grafting of short elastin-like peptides using an electric field. Sci Rep 2022; 12:18682. [PMID: 36333395 PMCID: PMC9636273 DOI: 10.1038/s41598-022-21672-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 09/29/2022] [Indexed: 11/06/2022] Open
Abstract
Surface-grafted elastin has found a wide range of uses such as sensing, tissue engineering and capture/release applications because of its ability to undergo stimuli-responsive phase transition. While various methods exist to control surface grafting in general, it is still difficult to control orientation as attachment occurs. This study investigates using an electric field as a new approach to control the surface-grafting of short elastin-like polypeptide (ELP). Characterization of ELP grafting to gold via quartz crystal microbalance with dissipation, atomic force microscopy and temperature ramping experiments revealed that the charge/hydrophobicity of the peptides, rearrangement kinetics and an applied electric field impacted the grafted morphology of ELP. Specifically, an ELP with a negative charge on the opposite end of the surface-binding moiety assembled in a more upright orientation, and a sufficient electric field pushed the charge away from the surface compared to when the same peptide was assembled in no electric field. In addition, this study demonstrated that assembling charged ELP in an applied electric field impacts transition behavior. Overall, this study reveals new strategies for achieving desirable and predictable surface properties of surface-bound ELP.
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Affiliation(s)
- Nuttanit Pramounmat
- grid.67105.350000 0001 2164 3847Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, USA
| | - Sogol Asaei
- grid.67105.350000 0001 2164 3847Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, USA
| | - Jacob D. Hostert
- grid.67105.350000 0001 2164 3847Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, USA
| | | | - Horst A. von Recum
- grid.67105.350000 0001 2164 3847Department of Biomedical Engineering, Case Western Reserve University, Cleveland, USA
| | - Julie N. Renner
- grid.67105.350000 0001 2164 3847Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, USA
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4
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Hostert JD, Loney CN, Pramounmat N, Yan K, Su Z, Renner JN. Self-Assembly and Rearrangement of a Polyproline II Helix Peptide on Gold. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:6115-6122. [PMID: 33974431 DOI: 10.1021/acs.langmuir.0c03583] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Polyproline peptide sequences have gained popularity as anchors for peptide-based self-assembled monolayers (SAMs) due to their attractive properties. In this work, peptides containing the polyproline II helix (PPII) conformation were designed and assembled on gold (Au). A quartz crystal microbalance with dissipation was used to characterize SAM formation kinetics and related properties. Peptides were designed with the sequence (GPPPPPG)2C. It was discovered that a biexponential adsorption and rearrangement model describes the binding kinetics of the PPII-containing peptide on Au. In this model, an initial reversible binding step is followed by an irreversible rearrangement step, given by parameter kt. This study found kt to be approximately 0.00064 s-1 for the PPII-containing peptides. Similarly, we found that the adsorption of the PPII-containing peptide on Au, given by ΔGads, was thermodynamically favorable (-7.8 kcal mol-1) and comparable to other common thiol terminated SAMs on Au. Furthermore, we characterized SAM properties via QCM-D, Fourier-transform infrared (FTIR) spectroscopy, and electrochemical techniques to reveal high molecular density SAMs consisting of PPII helices. In addition, these SAMs were found to have high antifouling properties. Overall, this study characterizes the fundamental assembly mechanisms, particularly, rearrangement of PPII-containing peptides for the first time, which will be useful in the designing of future peptide-based SAMs with high surface coverage and antifouling properties.
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Affiliation(s)
- Jacob D Hostert
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Charles N Loney
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Nuttanit Pramounmat
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Katherine Yan
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Zihang Su
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Julie N Renner
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
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Su Z, Kim C, Renner JN. Quantification of the effects of hydrophobicity and mass loading on the effective coverage of surface-immobilized elastin-like peptides. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2021.107933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Sharma A, Sharma P, Roy S. Elastin-inspired supramolecular hydrogels: a multifaceted extracellular matrix protein in biomedical engineering. SOFT MATTER 2021; 17:3266-3290. [PMID: 33730140 DOI: 10.1039/d0sm02202k] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The phenomenal advancement in regenerative medicines has led to the development of bioinspired materials to fabricate a biomimetic artificial extracellular matrix (ECM) to support cellular survival, proliferation, and differentiation. Researchers have diligently developed protein polymers consisting of functional sequences of amino acids evolved in nature. Nowadays, certain repetitive bioinspired polymers are treated as an alternative to synthetic polymers due to their unique properties like biodegradability, easy scale-up, biocompatibility, and non-covalent molecular associations which imparts tunable supramolecular architecture to these materials. In this direction, elastin has been identified as a potential scaffold that renders extensibility and elasticity to the tissues. Elastin-like polypeptides (ELPs) are artificial repetitive polymers that exhibit lower critical solution temperature (LCST) behavior in a particular environment than synthetic polymers and hence have gained extensive interest in the fabrication of stimuli-responsive biomaterials. This review discusses in detail the unique structural aspects of the elastin and its soluble precursor, tropoelastin. Furthermore, the versatility of elastin-like peptides is discussed through numerous examples that bolster the significance of elastin in the field of regenerative medicines such as wound care, cardiac tissue engineering, ocular disorders, bone tissue regeneration, etc. Finally, the review highlights the importance of exploring short elastin-mimetic peptides to recapitulate the structural and functional aspects of elastin for advanced healthcare applications.
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Affiliation(s)
- Archita Sharma
- Institute of Nano Science and Technology (INST), Sector 81, Knowledge City, Mohali, 140306, Punjab, India.
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7
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Sloand JN, Miller MA, Medina SH. Fluorinated peptide biomaterials. Pept Sci (Hoboken) 2021; 113:e24184. [PMID: 34541446 PMCID: PMC8448251 DOI: 10.1002/pep2.24184] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 06/30/2020] [Indexed: 12/20/2022]
Abstract
Fluorinated compounds, while rarely used by nature, are emerging as fundamental ingredients in biomedical research, with applications in drug discovery, metabolomics, biospectroscopy, and, as the focus of this review, peptide/protein engineering. Leveraging the fluorous effect to direct peptide assembly has evolved an entirely new class of organofluorine building blocks from which unique and bioactive materials can be constructed. Here, we discuss three distinct peptide fluorination strategies used to design and induce peptide assembly into nano-, micro-, and macrosupramolecular states that potentiate high-ordered organization into material scaffolds. These fluorine-tailored peptide assemblies employ the unique fluorous environment to boost biofunctionality for a broad range of applications, from drug delivery to antibacterial coatings. This review provides foundational tactics for peptide fluorination and discusses the utility of these fluorous-directed hierarchical structures as material platforms in diverse biomedical applications.
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Affiliation(s)
- Janna N Sloand
- Department of Biomedical Engineering, Penn State University, University Park, Pennsylvania, USA
| | - Michael A Miller
- Department of Biomedical Engineering, Penn State University, University Park, Pennsylvania, USA
| | - Scott H Medina
- Department of Biomedical Engineering, Penn State University, University Park, Pennsylvania, USA
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Pramounmat N, Loney CN, Kim C, Wiles L, Ayers KE, Kusoglu A, Renner JN. Controlling the Distribution of Perfluorinated Sulfonic Acid Ionomer with Elastin-like Polypeptide. ACS APPLIED MATERIALS & INTERFACES 2019; 11:43649-43658. [PMID: 31644259 DOI: 10.1021/acsami.9b11160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Proton-exchange-membrane (PEM)-based devices are promising technologies for hydrogen production and electricity generation. Currently, the amount of expensive platinum catalyst used in these devices must be reduced to be cost-competitive with other technologies. These devices typically contain Nafion ionomer thin films in the catalyst layers, which are responsible for transporting protons and gaseous species to and from electrochemically active sites. The morphology of the Nafion ionomer thin films in the catalyst layers with reduced platinum loading is impacted by interactions with the catalyst and the confinement to nanometer thicknesses, which leads to performance losses in PEM-based devices. In this study, an elastin-like polypeptide (ELP) is designed to modulate the morphology of Nafion ionomer on platinum surfaces. The ELP shows an ability to assemble into a monolayer on platinum and change the ionomer interaction with platinum, thereby modifying its thin-film structure and improving the Nafion ionomer coverage. As a proof of concept, an ELP-modified catalyst ink was prepared and morphological differences were observed. Overall, we discovered an engineered ELP that can modulate the ionomer-catalyst interface in the electrodes of PEM-based devices.
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Affiliation(s)
- Nuttanit Pramounmat
- Department of Chemical and Biomolecular Engineering , Case Western Reserve University , Cleveland , Ohio 44106 , United States
| | - Charles N Loney
- Department of Chemical and Biomolecular Engineering , Case Western Reserve University , Cleveland , Ohio 44106 , United States
| | - ChulOong Kim
- Department of Chemical and Biomolecular Engineering , Case Western Reserve University , Cleveland , Ohio 44106 , United States
| | - Luke Wiles
- Nel Hydrogen Inc. , 10 Technology Drive , Wallingford , Connecticut 06492 , United States
| | - Katherine E Ayers
- Nel Hydrogen Inc. , 10 Technology Drive , Wallingford , Connecticut 06492 , United States
| | - Ahmet Kusoglu
- Energy Conversion Group, Energy Technologies Area , Lawrence Berkeley National Laboratory , 1 Cyclotron Road, MS70-108B , Berkeley , California 94720 , United States
| | - Julie N Renner
- Department of Chemical and Biomolecular Engineering , Case Western Reserve University , Cleveland , Ohio 44106 , United States
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