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Tabish TA, Xu J, Campbell CK, Abbas M, Myers WK, Didwal P, Carugo D, Xie F, Crabtree MJ, Stride E, Lygate CA. pH-sensitive release of nitric oxide gas using peptide-graphene co-assembled hybrid nanosheets. Nitric Oxide 2024; 147:42-50. [PMID: 38631610 DOI: 10.1016/j.niox.2024.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 04/04/2024] [Accepted: 04/11/2024] [Indexed: 04/19/2024]
Abstract
Nitric oxide (NO) donating drugs such as organic nitrates have been used to treat cardiovascular diseases for more than a century. These donors primarily produce NO systemically. It is however sometimes desirable to control the amount, location, and time of NO delivery. We present the design of a novel pH-sensitive NO release system that is achieved by the synthesis of dipeptide diphenylalanine (FF) and graphene oxide (GO) co-assembled hybrid nanosheets (termed as FF@GO) through weak molecular interactions. These hybrid nanosheets were characterised by using X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, zeta potential measurements, X-ray photoelectron spectroscopy, scanning and transmission electron microscopies. The weak molecular interactions, which include electrostatic, hydrogen bonding and π-π stacking, are pH sensitive due to the presence of carboxylic acid and amine functionalities on GO and the dipeptide building blocks. Herein, we demonstrate that this formulation can be loaded with NO gas with the dipeptide acting as an arresting agent to inhibit NO burst release at neutral pH; however, at acidic pH it is capable of releasing NO at the rate of up to 0.6 μM per minute, comparable to the amount of NO produced by healthy endothelium. In conclusion, the innovative conjugation of dipeptide with graphene can store and release NO gas under physiologically relevant concentrations in a pH-responsive manner. pH responsive NO-releasing organic-inorganic nanohybrids may prove useful for the treatment of cardiovascular diseases and other pathologies.
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Affiliation(s)
- Tanveer A Tabish
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, British Heart Foundation (BHF) Centre of Research Excellence, University of Oxford, Oxford, OX3 7BN, United Kingdom.
| | - Jiamin Xu
- Department of Materials and London Centre for Nanotechnology, Imperial College London, London, SW7 2AZ, United Kingdom
| | - Christopher K Campbell
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), The Botnar Research Centre, University of Oxford, Oxford, OX3 7LD, United Kingdom
| | - Manzar Abbas
- Department of Chemistry, Khalifa University of Science and Technology, P.O. Box, 127788, Abu Dhabi, United Arab Emirates
| | - William K Myers
- Centre for Advanced Electron Spin Resonance (CAESR), Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3QR, United Kingdom
| | - Pravin Didwal
- Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, United Kingdom
| | - Dario Carugo
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), The Botnar Research Centre, University of Oxford, Oxford, OX3 7LD, United Kingdom
| | - Fang Xie
- Department of Materials and London Centre for Nanotechnology, Imperial College London, London, SW7 2AZ, United Kingdom
| | - Mark J Crabtree
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, British Heart Foundation (BHF) Centre of Research Excellence, University of Oxford, Oxford, OX3 7BN, United Kingdom; Department of Biochemical Sciences, School of Biosciences and Medicine, University of Surrey, Guildford, GU2 7XH, United Kingdom
| | - Eleanor Stride
- Institute of Biomedical Engineering (IBME), Department of Engineering Science, University of Oxford, Oxford, OX3 7LD, United Kingdom
| | - Craig A Lygate
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, British Heart Foundation (BHF) Centre of Research Excellence, University of Oxford, Oxford, OX3 7BN, United Kingdom
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2
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Alikin D, Yuzhakov V, Semiletova L, Slabov V, Kuznetsov D, Gimadeeva L, Shur V, Kopyl S, Kholkin A. Piezoactive Bioorganic Diphenylalanine Films: Mechanism of Phase Formation. ACS Biomater Sci Eng 2023; 9:6715-6723. [PMID: 38032859 DOI: 10.1021/acsbiomaterials.3c01507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Self-organized peptides are unique materials with various applications in biology, medicine, and nanotechnology. Many of these applications require fabrication of homogeneous thin films having high piezoelectric effect and sufficiently low roughness. Recently, a facile method for the controlled deposition of flat solid films of the most studied peptide, diphenylalanine (FF), has been proposed, which is based on the crystallization of FF in the amorphous phase under the action of water vapor. This method is very advantageous compared with crystallization from a liquid phase reported previously. Here, we thoroughly investigate the mechanism of solid-state transformation from the amorphous to crystalline phase. The study revealed that the process proceeds in two distinct stages, maintaining clamped condition of self-assembling building blocks that preserve the films' morphology and high piezoelectric activity. We emphasize the critical role of water diffusion that governs two-dimensional growth of crystalline domains in FF films, merging in very dense, flat, and homogeneous films. These findings open a wide perspective for using this methodology for the direct fabrication of biofilms from the amorphous phase. We thus expect the application of these films to various nanotechnological applications of self-assembled structures.
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Affiliation(s)
- Denis Alikin
- School of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russia
| | - Vladimir Yuzhakov
- School of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russia
| | - Larisa Semiletova
- School of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russia
| | - Vladislav Slabov
- Department of Physics & CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro 3810-193, Portugal
| | - Dmitrii Kuznetsov
- School of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russia
| | - Lubov Gimadeeva
- School of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russia
| | - Vladimir Shur
- School of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russia
| | - Svitlana Kopyl
- Department of Physics & CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro 3810-193, Portugal
| | - Andrei Kholkin
- School of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russia
- Department of Physics & CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro 3810-193, Portugal
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3
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Bandeira CCS, Foiani LMC, Carlos GB, Ishikawa MS, Ferreira PMGL, da Silva Martinho H. Solvent-dependent formation kinetics of L,L-diphenylalanine micro/nanotubes. Phys Chem Chem Phys 2023; 25:5107-5113. [PMID: 36722992 DOI: 10.1039/d2cp03491c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Investigating the molecular mechanism underlying the aggregation process of amyloid fibers is of great importance both for its implications in several degenerative diseases and for the design of new materials based on self-assembly. In particular, micro/nanotubes of L,L-diphenylalanine have been investigated as a model of amyloid plaques in Alzheimer's disease and also for their broad range of physical properties, e.g., good thermo- and mechanical stability, semiconductivity, piezoelectricity and optical properties. It has been reported that the assembly/disassembly dynamics of L,L-diphenylalanine crystals is influenced by the solvent composition being triggered by evaporation of solvents. In fact the solvatomorphism of this peptide-based nanomaterial is complex and rich attracting great attention. Here we investigated the growing kinetics of the micro/nanotubes of L,L-diphenylalanine in samples prepared with toluene, ethanol, and acetic acid solvents by time-resolved Raman spectroscopy. Our results indicated that the self-assembly in this case competes with the water evaporation process contrary to what is reported by samples prepared with widely used solvent 1,1,1,3,3,3-hexafluoro-2-propanol. We note that exclusively tubular structures (being hollow for the toluene solvent case) were observed. Interestingly our results support the fact that for acetic acid, ethanol, and toluene the micro/nanotube formation process is autocatalytic instead of being nucleation-dominating as reported for samples prepared using solvent 1,1,1,3,3,3-hexafluoro-2-propanol.
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Affiliation(s)
| | | | - Giovana Bonano Carlos
- Universidade Federal do ABC (UFABC), Av. dos Estados 5001, Santo André-SP, 09210-580, Brazil.
| | - Mariana Sayuri Ishikawa
- Universidade Federal do ABC (UFABC), Av. dos Estados 5001, Santo André-SP, 09210-580, Brazil.
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4
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Song DH, Huh C, Seo HS. Spectrally combined four-diode-pumped femtosecond Ti:sapphire laser with 16.3 nJ pulse and its application to video-rate coherent anti-Stokes Raman scattering spectro-microscopy. OPTICS EXPRESS 2023; 31:3269-3277. [PMID: 36785323 DOI: 10.1364/oe.481422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 12/29/2022] [Indexed: 06/18/2023]
Abstract
We demonstrate the generation of high-energy femtosecond pulses by a spectrally combined four-diode-pumped Ti:sapphire laser with semi-conductor saturable absorber mirror mode locking. To achieve energy scaling, the laser cavity was extended using a design based on the Herriott multipass cell. The laser operates at a 17.5 MHz repetition rate and generates pulses with energies as high as 16.3 nJ and 80 fs in duration. The signal-to-noise ratio at the fundamental frequency showed an extinction ratio of >50 dB relative to the carrier. This compact single laser was applied to video-rate forward and backward coherent anti-Stokes Raman scattering spectro-microscopy with a pixel dwell time of 122 ns, which is the lowest dwell time ever achieved, to the best of our knowledge.
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5
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Yang J, Huan X, Liu Y, Lee H, Chen M, Hu S, Cao S, Kim JT. Three-Dimensional Printing of Dipeptides with Spatioselective Programming of Crystallinity for Multilevel Anticounterfeiting. NANO LETTERS 2022; 22:7776-7783. [PMID: 36173250 DOI: 10.1021/acs.nanolett.2c01761] [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: 06/16/2023]
Abstract
The functionalities of peptide microstructures and nanostructures can be enhanced by controlling their crystallinity. Gaining control over the crystallinity within the desired structure, however, remains a challenge. We have developed a three-dimensional (3D) printing method that enables spatioselective programming of the crystallinity of diphenylalanine (FF) dipeptide microarchitectures. A femtoliter ink meniscus is used to spatially control reprecipitation self-assembly, enabling the printing of a freestanding FF microstructure with programmed shape and crystallinity. The self-assembly crystallization of FF can be switched on and off at will by controlling the evaporation of the binary solvent. The evaporation-dependent crystallization was theoretically studied by the numerical simulation of supersaturation fields in the meniscus. We found that a 3D-printed FF microarchitecture with spatially programmed crystallinity can carry a 3D digital optical anisotropy pattern, applicable to generating polarization-encoded anticounterfeiting labels. This crystallinity-controlled additive manufacturing will pave the new way for facilitating the creation of peptide-based devices.
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Affiliation(s)
- Jihyuk Yang
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Xiao Huan
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Yu Liu
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Heekwon Lee
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Mojun Chen
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Shiqi Hu
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Sixi Cao
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Ji Tae Kim
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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6
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Liu X, Riegler H, Ma L, Li Q, Hao J. Vapor-stimuli shape transformation cycles of assembled dipeptide film. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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7
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Almohammed S, Fularz A, Kanoun MB, Goumri-Said S, Aljaafari A, Rodriguez BJ, Rice JH. Structural Transition-Induced Raman Enhancement in Bioinspired Diphenylalanine Peptide Nanotubes. ACS APPLIED MATERIALS & INTERFACES 2022; 14:12504-12514. [PMID: 35254049 PMCID: PMC8931724 DOI: 10.1021/acsami.1c22770] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 02/18/2022] [Indexed: 06/14/2023]
Abstract
Semiconducting materials are increasingly proposed as alternatives to noble metal nanomaterials to enhance Raman scattering. We demonstrate that bioinspired semiconducting diphenylalanine peptide nanotubes annealed through a reported structural transition can support Raman detection of 10-7 M concentrations for a range of molecules including mononucleotides. The enhancement is attributed to the introduction of electronic states below the conduction band that facilitate charge transfer to the analyte molecule. These results show that organic semiconductor-based materials can serve as platforms for enhanced Raman scattering for chemical sensing. As the sensor is metal-free, the enhancement is achieved without the introduction of electromagnetic surface-enhanced Raman spectroscopy.
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Affiliation(s)
- Sawsan Almohammed
- School
of Physics, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
- Conway
Institute of Biomolecular and Biomedical Research, University College,
Dublin, Belfield, Dublin D04 V1W8, Ireland
| | - Agata Fularz
- School
of Physics, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
| | - Mohammed Benali Kanoun
- Department
of Physics, College of Science, King Faisal
University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
| | - Souraya Goumri-Said
- Physics
Department, College of Science and General Studies, Alfaisal University, P.O. Box 50927, Riyadh 11533, Saudi Arabia
| | - Abdullah Aljaafari
- Department
of Physics, College of Science, King Faisal
University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
| | - Brian J. Rodriguez
- School
of Physics, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
- Conway
Institute of Biomolecular and Biomedical Research, University College,
Dublin, Belfield, Dublin D04 V1W8, Ireland
| | - James H. Rice
- School
of Physics, University College Dublin, Belfield, Dublin D04 V1W8, Ireland
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8
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Yang J, Chen M, Lee H, Xu Z, Zhou Z, Feng SP, Kim JT. Three-Dimensional Printing of Self-Assembled Dipeptides. ACS APPLIED MATERIALS & INTERFACES 2021; 13:20573-20580. [PMID: 33896166 DOI: 10.1021/acsami.1c03062] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Peptide-based materials are emerging as smart building blocks for nanobiodevices due to the programmability of their properties via the molecular constituents or arrangements. Many clever molecular self-assembly approaches have been devised to produce peptide crystalline structures. However, their freeform shaping remains a challenge due to the intrinsic self-assembly nature. Here, we report the fabrication of freeform, crystalline diphenylalanine (FF) peptide structures by combining meniscus-guided 3D printing with molecular self-assembly. Self-assembly in 3D-printed FF arises from mild thermal activation under precise temperature control of the build platform. After thorough characterizations, we demonstrate layer-by-layer, crystalline 3D printing with a high spatial resolution of 2 μm laterally and 200 nm vertically. The 3D-printed FF exhibits piezoelectricity originating from its crystalline character, showing the potential to become a key constituent for bioelectronic devices. We expect this technique to open up the possibility to create functional devices based on self-assembled organic materials without design restrictions.
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Affiliation(s)
- Jihyuk Yang
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Mojun Chen
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Heekwon Lee
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Zhaoyi Xu
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Zhiwen Zhou
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Shien-Ping Feng
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Ji Tae Kim
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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9
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Rodger PM, Montgomery C, Costantini G, Rodger A. Morphology, energetics and growth kinetics of diphenylalanine fibres. Phys Chem Chem Phys 2021; 23:4597-4604. [PMID: 33620048 DOI: 10.1039/d0cp05477a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Diphenylalanine (FF) has been shown to self-assemble from water into heterogeneous fibres that are among the stiffest biomaterials known. How and why the fibres form has, however, not been clear. In this work, the nucleation and growth of FF fibres was investigated in a combined experimental and theoretical study. Scanning electron microscopy and optical microscopy showed FF fibre morphology to be hollow tubes of varying widths with occasional endcaps. Molecular dynamics simulations of FF nanostructures based on the bulk crystalline geometry demonstrated that axial growth stablilises the fibres and that structures with different widths show similar stabilities, in accord with the wide range of fibre widths observed experimentally. Linear dichroism (LD) spectroscopy was used to determine the thermal stability of the fibres, showing that FF solutions are fully monomeric at 70 °C and that fibres begin to form at ∼40 °C upon cooling. The LD kinetic studies indicated a nucleation-driven assembly with subsequent fibre growth, but a secondary nucleation process is required to explain the data.
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