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Czaja M, Chachaj-Brekiesz A, Skirlińska-Nosek K, Szajna K, Sofińska K, Lupa D, Kobierski J, Wnętrzak A, Szymoński M, Lipiec E. Fabrication of plasmonic probes for reproducible nanospectroscopic investigation of lipid monolayers - The electrochemical etching with DC-pulsed voltage. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 316:124323. [PMID: 38692104 DOI: 10.1016/j.saa.2024.124323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 04/12/2024] [Accepted: 04/21/2024] [Indexed: 05/03/2024]
Abstract
Tip-enhanced Raman spectroscopy (TERS) is a label-free analytical technique that characterizes molecular systems, potentially even with a nanometric resolution. In principle, the metallic plasmonic probe is illuminated with a laser beam generating the localized surface plasmons, which induce a strong local electric field enhancement in close proximity to the probe. Such field enhancement improves the Raman scattering cross-section from the sample volume localized near the probe apex. TERS provides a high spatial resolution and a great sensitivity, however, it is rather rarely used due to technical limitations causing unstable enhancement and the relative lack of data reproducibility. Despite many scientific efforts for the fabrication of effective TER probes providing robust TER enhancement still requires further investigations. In this work, we explore new possibilities based on preparation of scanning tunnelling microscopy (STM) plasmonic probes, since by nature of the tunnelling effect, they potentially could offer a very high spatial resolution in STM guided TERS experiments. Here we compare two methods of STM-TERS probe preparation for effective spectra acquisition. Our results strongly indicate that an application of square pulse voltage upon the etching procedure significantly improves the quality of the TER data over those obtained with a constant voltage one. To demonstrate the efficiency of our probes we present the results of hyperspectral TER mapping of the 1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine (DPPE) monolayer deposited on an ultra-pure and atomically flat gold substrate.
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Affiliation(s)
- Michał Czaja
- Jagiellonian University, Faculty of Physics, Astronomy, and Applied Computer Science, M. Smoluchowski Institute of Physics, Łojasiewicza 11, Kraków 30-348, Poland; Jagiellonian University, Doctoral School of Exact and Natural Sciences, Kraków 30-387, Poland
| | - Anna Chachaj-Brekiesz
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, Kraków 30-387, Poland
| | - Katarzyna Skirlińska-Nosek
- Jagiellonian University, Faculty of Physics, Astronomy, and Applied Computer Science, M. Smoluchowski Institute of Physics, Łojasiewicza 11, Kraków 30-348, Poland; Jagiellonian University, Doctoral School of Exact and Natural Sciences, Kraków 30-387, Poland
| | - Konrad Szajna
- Jagiellonian University, Faculty of Physics, Astronomy, and Applied Computer Science, M. Smoluchowski Institute of Physics, Łojasiewicza 11, Kraków 30-348, Poland
| | - Kamila Sofińska
- Jagiellonian University, Faculty of Physics, Astronomy, and Applied Computer Science, M. Smoluchowski Institute of Physics, Łojasiewicza 11, Kraków 30-348, Poland
| | - Dawid Lupa
- Jagiellonian University, Faculty of Physics, Astronomy, and Applied Computer Science, M. Smoluchowski Institute of Physics, Łojasiewicza 11, Kraków 30-348, Poland
| | - Jan Kobierski
- Jagiellonian University Medical College, Faculty of Pharmacy, Department of Pharmaceutical Biophysics, Medyczna 9, Kraków 30-688, Poland
| | - Anita Wnętrzak
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, Kraków 30-387, Poland
| | - Marek Szymoński
- Jagiellonian University, Faculty of Physics, Astronomy, and Applied Computer Science, M. Smoluchowski Institute of Physics, Łojasiewicza 11, Kraków 30-348, Poland
| | - Ewelina Lipiec
- Jagiellonian University, Faculty of Physics, Astronomy, and Applied Computer Science, M. Smoluchowski Institute of Physics, Łojasiewicza 11, Kraków 30-348, Poland.
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2
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Ali A, Holman AP, Rodriguez A, Osborne L, Kurouski D. Elucidating the mechanisms of α-Synuclein-lipid interactions using site-directed mutagenesis. Neurobiol Dis 2024; 198:106553. [PMID: 38839022 DOI: 10.1016/j.nbd.2024.106553] [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: 04/30/2024] [Revised: 06/01/2024] [Accepted: 06/01/2024] [Indexed: 06/07/2024] Open
Abstract
α-Synuclein (α-syn) is a small protein that is involved in cell vesicle trafficking in neuronal synapses. A progressive aggregation of this protein is the expected molecular cause of Parkinson's disease, a disease that affects millions of people around the world. A growing body of evidence indicates that phospholipids can strongly accelerate α-syn aggregation and alter the toxicity of α-syn oligomers and fibrils formed in the presence of lipid vesicles. This effect is attributed to the presence of high copies of lysines in the N-terminus of the protein. In this study, we performed site-directed mutagenesis and replaced one out of two lysines at each of the five sites located in the α-syn N-terminus. Using several biophysical and cellular approaches, we investigated the extent to which six negatively charged fatty acids (FAs) could alter the aggregation properties of K10A, K23A, K32A, K43A, and K58A α-syn. We found that FAs uniquely modified the aggregation properties of K43A, K58A, and WT α-syn, as well as changed morphology of amyloid fibrils formed by these mutants. At the same time, FAs failed to cause substantial changes in the aggregation rates of K10A, K23A, and K32A α-syn, as well as alter the morphology and toxicity of the corresponding amyloid fibrils. Based on these results, we can conclude that K10, K23, and K32 amino acid residues play a critical role in protein-lipid interactions since their replacement on non-polar alanines strongly suppressed α-syn-lipid interactions.
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Affiliation(s)
- Abid Ali
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Aidan P Holman
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States; Department of Entomology, Texas A&M University, College Station, TX 77843, United States
| | - Axell Rodriguez
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Luke Osborne
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Dmitry Kurouski
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States; Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, United States.
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Gao Y, Zheng P, Meng ZD, Wang HL, You EM, Zhong JH, Tian ZQ, Wang L, He H. Fast Nano-IR Hyperspectral Imaging Empowered by Large-Dataset-Free Miniaturized Spatial-Spectral Network. Anal Chem 2024; 96:9610-9620. [PMID: 38822784 DOI: 10.1021/acs.analchem.4c01211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2024]
Abstract
The emerging field of nanoscale infrared (nano-IR) offers label-free molecular contrast, yet its imaging speed is limited by point-by-point traverse acquisition of a three-dimensional (3D) data cube. Here, we develop a spatial-spectral network (SS-Net), a miniaturized deep-learning model, together with compressive sampling to accelerate the nano-IR imaging. The compressive sampling is performed in both the spatial and spectral domains to accelerate the imaging process. The SS-Net is trained to learn the mapping from small nano-IR image patches to the corresponding spectra. With this elaborated mapping strategy, the training can be finished quickly within several minutes using the subsampled data, eliminating the need for a large-labeled dataset of common deep learning methods. We also designed an efficient loss function, which incorporates the image and spectral similarity to enhance the training. We first validate the SS-Net on an open stimulated Raman-scattering dataset; the results exhibit the potential of 10-fold imaging speed improvement with state-of-the-art performance. We then demonstrate the versatility of this approach on atomic force microscopy infrared (AFM-IR) microscopy with 7-fold imaging speed improvement, even on nanoscale Fourier transform infrared (nano-FTIR) microscopy with up to 261.6 folds faster imaging speed. We further showcase the generalization of this method on AFM-force volume-based multiparametric nanoimaging. This method establishes a paradigm for rapid nano-IR imaging, opening new possibilities for cutting-edge research in materials, photonics, and beyond.
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Affiliation(s)
- Yun Gao
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361102, China
| | - Peng Zheng
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361102, China
| | - Zhao-Dong Meng
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Hai-Long Wang
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361102, China
| | - En-Ming You
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- School of Ocean Information Engineering, Jimei University, Xiamen 361021, China
| | - Jin-Hui Zhong
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhong-Qun Tian
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Lei Wang
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361102, China
| | - Hao He
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361102, China
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
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4
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Müller H, Stadler H, de los Arcos T, Keller A, Grundmeier G. AFM-IR investigation of thin PECVD SiO x films on a polypropylene substrate in the surface-sensitive mode. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2024; 15:603-611. [PMID: 38887529 PMCID: PMC11181231 DOI: 10.3762/bjnano.15.51] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 05/02/2024] [Indexed: 06/20/2024]
Abstract
Thin silicon oxide films deposited on a polypropylene substrate by plasma-enhanced chemical vapor deposition were investigated using atomic force microscopy-based infrared (AFM-IR) nanospectroscopy in contact and surface-sensitive mode. The focus of this work is the comparison of the different measurement methods (i.e., contact mode and surface-sensitive mode) with respect to the chemical surface sensitivity. The use of the surface-sensitive mode in AFM-IR shows an enormous improvement for the analysis of thin films on the IR-active substrate. As a result, in this mode, the signal of the substrate material could be significantly reduced. Even layers that are so thin that they could hardly be measured in the contact mode can be analyzed with the surface-sensitive mode.
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Affiliation(s)
- Hendrik Müller
- Technical and Macromolecular Chemistry, Paderborn University, Warburger Str. 100, 33098 Paderborn, Germany
| | - Hartmut Stadler
- Bruker Nano Surfaces and Metrology Division, Östliche Rheinbrückenstr. 49, 76187 Karlsruhe, Germany
| | - Teresa de los Arcos
- Technical and Macromolecular Chemistry, Paderborn University, Warburger Str. 100, 33098 Paderborn, Germany
| | - Adrian Keller
- Technical and Macromolecular Chemistry, Paderborn University, Warburger Str. 100, 33098 Paderborn, Germany
| | - Guido Grundmeier
- Technical and Macromolecular Chemistry, Paderborn University, Warburger Str. 100, 33098 Paderborn, Germany
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5
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Burr DJ, Drauschke J, Kanevche K, Kümmel S, Stryhanyuk H, Heberle J, Perfumo A, Elsaesser A. Stable Isotope Probing-nanoFTIR for Quantitation of Cellular Metabolism and Observation of Growth-Dependent Spectral Features. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2400289. [PMID: 38708804 DOI: 10.1002/smll.202400289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 04/16/2024] [Indexed: 05/07/2024]
Abstract
This study utilizes nanoscale Fourier transform infrared spectroscopy (nanoFTIR) to perform stable isotope probing (SIP) on individual bacteria cells cultured in the presence of 13C-labelled glucose. SIP-nanoFTIR simultaneously quantifies single-cell metabolism through infrared spectroscopy and acquires cellular morphological information via atomic force microscopy. The redshift of the amide I peak corresponds to the isotopic enrichment of newly synthesized proteins. These observations of single-cell translational activity are comparable to those of conventional methods, examining bulk cell numbers. Observing cells cultured under conditions of limited carbon, SIP- nanoFTIR is used to identify environmentally-induced changes in metabolic heterogeneity and cellular morphology. Individuals outcompeting their neighboring cells will likely play a disproportionately large role in shaping population dynamics during adverse conditions or environmental fluctuations. Additionally, SIP-nanoFTIR enables the spectroscopic differentiation of specific cellular growth phases. During cellular replication, subcellular isotope distribution becomes more homogenous, which is reflected in the spectroscopic features dependent on the extent of 13C-13C mode coupling or to specific isotopic symmetries within protein secondary structures. As SIP-nanoFTIR captures single-cell metabolism, environmentally-induced cellular processes, and subcellular isotope localization, this technique offers widespread applications across a variety of disciplines including microbial ecology, biophysics, biopharmaceuticals, medicinal science, and cancer research.
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Affiliation(s)
- David J Burr
- Department of Physics, Experimental Biophysics and Space Sciences, Freie Universität Berlin, Arnimallee 14, 14195, Berlin, Germany
| | - Janina Drauschke
- Department of Physics, Experimental Biophysics and Space Sciences, Freie Universität Berlin, Arnimallee 14, 14195, Berlin, Germany
| | - Katerina Kanevche
- Department of Physics, Experimental Molecular Biophysics, Freie Universität Berlin, Arnimallee 14, 14195, Berlin, Germany
- Department of Chemistry, Princeton University, Princeton, NJ, 08544, USA
| | - Steffen Kümmel
- Department of Technical Biogeochemistry, Helmholtz Centre for Environmental Research - UFZ, Permoserstraße 15, 04318, Leipzig, Germany
| | - Hryhoriy Stryhanyuk
- Department of Technical Biogeochemistry, Helmholtz Centre for Environmental Research - UFZ, Permoserstraße 15, 04318, Leipzig, Germany
| | - Joachim Heberle
- Department of Physics, Experimental Molecular Biophysics, Freie Universität Berlin, Arnimallee 14, 14195, Berlin, Germany
| | - Amedea Perfumo
- Department of Physics, Experimental Molecular Biophysics, Freie Universität Berlin, Arnimallee 14, 14195, Berlin, Germany
- Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Polar Terrestrial Environmental Systems, Telegrafenberg, 14473, Potsdam, Germany
| | - Andreas Elsaesser
- Department of Physics, Experimental Biophysics and Space Sciences, Freie Universität Berlin, Arnimallee 14, 14195, Berlin, Germany
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Li J, Jahng J, Ma X, Liang J, Zhang X, Min Q, Wang XL, Chen S, Lee ES, Xia XH. Surface-phonon-polariton-enhanced photoinduced dipole force for nanoscale infrared imaging. Natl Sci Rev 2024; 11:nwae101. [PMID: 38698902 PMCID: PMC11065349 DOI: 10.1093/nsr/nwae101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 03/12/2024] [Accepted: 03/12/2024] [Indexed: 05/05/2024] Open
Abstract
The photoinduced dipole force (PiDF) is an attractive force arising from the Coulombic interaction between the light-induced dipoles on the illuminated tip and the sample. It shows extreme sample-tip distance and refractive index dependence, which is promising for nanoscale infrared (IR) imaging of ultrathin samples. However, the existence of PiDF in the mid-IR region has not been experimentally demonstrated due to the coexistence of photoinduced thermal force (PiTF), typically one to two orders of magnitude higher than PiDF. In this study, we demonstrate that, with the assistance of surface phonon polaritons, the PiDF of c-quartz can be enhanced to surpass its PiTF, enabling a clear observation of PiDF spectra reflecting the properties of the real part of permittivity. Leveraging the detection of the PiDF of phonon polaritonic substrate, we propose a strategy to enhance the sensitivity and contrast of photoinduced force responses in transmission images, facilitating the precise differentiation of the heterogeneous distribution of ultrathin samples.
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Affiliation(s)
- Jian Li
- State Key Lab of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Junghoon Jahng
- Hyperspectral Nano-Imaging Team, Korea Research Institute of Standards and Science, Daejeon 34113, South Korea
| | - Xuezhi Ma
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, Singapore 138634, Singapore
| | - Jing Liang
- State Key Lab of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xue Zhang
- State Key Lab of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Qianhao Min
- State Key Lab of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xiao-Liang Wang
- State Key Lab of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Shuangjun Chen
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Eun Seong Lee
- Hyperspectral Nano-Imaging Team, Korea Research Institute of Standards and Science, Daejeon 34113, South Korea
| | - Xing-Hua Xia
- State Key Lab of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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Luo SH, Zhao XJ, Cao MF, Xu J, Wang WL, Lu XY, Huang QT, Yue XX, Liu GK, Yang L, Ren B, Tian ZQ. Signal2signal: Pushing the Spatiotemporal Resolution to the Limit by Single Chemical Hyperspectral Imaging. Anal Chem 2024; 96:6550-6557. [PMID: 38642045 DOI: 10.1021/acs.analchem.3c04609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2024]
Abstract
There is growing interest in developing a high-performance self-supervised denoising algorithm for real-time chemical hyperspectral imaging. With a good understanding of the working function of the zero-shot Noise2Noise-based denoising algorithm, we developed a self-supervised Signal2Signal (S2S) algorithm for real-time denoising with a single chemical hyperspectral image. Owing to the accurate distinction and capture of the weak signal from the random fluctuating noise, S2S displays excellent denoising performance, even for the hyperspectral image with a spectral signal-to-noise ratio (SNR) as low as 1.12. Under this condition, both the image clarity and the spatial resolution could be significantly improved and present an almost identical pattern with a spectral SNR of 7.87. The feasibility of real-time denoising during imaging was well demonstrated, and S2S was applied to monitor the photoinduced exfoliation of transition metal dichalcogenide, which is hard to accomplish by confocal Raman spectroscopy. In general, the real-time denoising capability of S2S offers an easy way toward in situ/in vivo/operando research with much improved spatial and temporal resolution. S2S is open-source at https://github.com/3331822w/Signal2signal and will be accessible online at https://ramancloud.xmu.edu.cn/tutorial.
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Affiliation(s)
- Si-Heng Luo
- State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Xiao-Jiao Zhao
- State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Mao-Feng Cao
- State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jing Xu
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Wei-Li Wang
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Xin-Yu Lu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Qiu-Ting Huang
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Xia-Xia Yue
- State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Guo-Kun Liu
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Liu Yang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Bin Ren
- State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Zhong-Qun Tian
- State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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Baghel D, de Oliveira AP, Satyarthy S, Chase WE, Banerjee S, Ghosh A. Structural characterization of amyloid aggregates with spatially resolved infrared spectroscopy. Methods Enzymol 2024; 697:113-150. [PMID: 38816120 PMCID: PMC11147165 DOI: 10.1016/bs.mie.2024.02.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
The self-assembly of proteins and peptides into ordered structures called amyloid fibrils is a hallmark of numerous diseases, impacting the brain, heart, and other organs. The structure of amyloid aggregates is central to their function and thus has been extensively studied. However, the structural heterogeneities between aggregates as they evolve throughout the aggregation pathway are still not well understood. Conventional biophysical spectroscopic methods are bulk techniques and only report on the average structural parameters. Understanding the structure of individual aggregate species in a heterogeneous ensemble necessitates spatial resolution on the length scale of the aggregates. Recent technological advances have led to augmentation of infrared (IR) spectroscopy with imaging modalities, wherein the photothermal response of the sample upon vibrational excitation is leveraged to provide spatial resolution beyond the diffraction limit. These combined approaches are ideally suited to map out the structural heterogeneity of amyloid ensembles. AFM-IR, which integrates IR spectroscopy with atomic force microscopy enables identification of the structural facets the oligomers and fibrils at individual aggregate level with nanoscale resolution. These capabilities can be extended to chemical mapping in diseased tissue specimens with submicron resolution using optical photothermal microscopy, which combines IR spectroscopy with optical imaging. This book chapter provides the basic premise of these novel techniques and provides the typical methodology for using these approaches for amyloid structure determination. Detailed procedures pertaining to sample preparation and data acquisition and analysis are discussed and the aggregation of the amyloid β peptide is provided as a case study to provide the reader the experimental parameters necessary to use these techniques to complement their research efforts.
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Affiliation(s)
- Divya Baghel
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, AL, United States
| | - Ana Pacheco de Oliveira
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, AL, United States
| | - Saumya Satyarthy
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, AL, United States
| | - William E Chase
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, AL, United States
| | - Siddhartha Banerjee
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, AL, United States
| | - Ayanjeet Ghosh
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, AL, United States.
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9
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Sofińska K, Seweryn S, Skirlińska-Nosek K, Barbasz J, Lipiec E. Tip-enhanced Raman spectroscopy reveals the structural rearrangements of tau protein aggregates at the growth phase. NANOSCALE 2024; 16:5294-5301. [PMID: 38372161 DOI: 10.1039/d3nr06365h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Tau protein aggregates inside neurons in the course of Alzheimer's disease (AD). Because of the enormous number of people suffering from AD, this disease has become one of the world's major health and social problems. The presence of tau lesions clearly correlates with cognitive impairments in AD patients, thus, tau is the target of potential treatments for AD, next to amyloid-β. The exact mechanism of tau aggregation has not been understood in detail so far; especially little is known about the structural rearrangements of tau aggregates at the growth phase. The research into tau conformation at each step of the aggregation pathway will contribute to the design of effective therapeutic approaches. To follow the secondary structure of individual tau aggregates at the growth phase, we applied tip-enhanced Raman spectroscopy (TERS). The nanospectroscopic approach enabled us to follow the structure of individual aggregates occurring in the subsequent phases of tau aggregation. We applied multivariate data analysis to extract the spectral differences for tau aggregates at different aggregation phases. Moreover, atomic force microscopy (AFM) allowed the tracking of the morphological alterations for species occurring with the progression of tau aggregation.
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Affiliation(s)
- Kamila Sofińska
- Jagiellonian University, Faculty of Physics, Astronomy and Applied Computer Science, M. Smoluchowski Institute of Physics, Łojasiewicza 11, 30-348 Krakow, Poland.
| | - Sara Seweryn
- Jagiellonian University, Faculty of Physics, Astronomy and Applied Computer Science, M. Smoluchowski Institute of Physics, Łojasiewicza 11, 30-348 Krakow, Poland.
- Jagiellonian University, Doctoral School of Exact and Natural Sciences, Krakow, Poland
| | - Katarzyna Skirlińska-Nosek
- Jagiellonian University, Faculty of Physics, Astronomy and Applied Computer Science, M. Smoluchowski Institute of Physics, Łojasiewicza 11, 30-348 Krakow, Poland.
- Jagiellonian University, Doctoral School of Exact and Natural Sciences, Krakow, Poland
| | - Jakub Barbasz
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland
| | - Ewelina Lipiec
- Jagiellonian University, Faculty of Physics, Astronomy and Applied Computer Science, M. Smoluchowski Institute of Physics, Łojasiewicza 11, 30-348 Krakow, Poland.
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10
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Ali A, Dou T, Holman AP, Hung A, Osborne L, Pickett D, Rodriguez A, Zhaliazka K, Kurouski D. The influence of zwitterionic and anionic phospholipids on protein aggregation. Biophys Chem 2024; 306:107174. [PMID: 38211368 DOI: 10.1016/j.bpc.2024.107174] [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: 12/17/2023] [Revised: 01/05/2024] [Accepted: 01/05/2024] [Indexed: 01/13/2024]
Abstract
The progressive aggregation of misfolded proteins is the underlying molecular cause of numerous pathologies including Parkinson's disease and injection and transthyretin amyloidosis. A growing body of evidence indicates that protein deposits detected in organs and tissues of patients diagnosed with such pathologies contain fragments of lipid membranes. In vitro experiments also showed that lipid membranes could strongly change the aggregation rate of amyloidogenic proteins, as well as alter the secondary structure and toxicity of oligomers and fibrils formed in their presence. In this review, the effect of large unilamellar vesicles (LUVs) composed of zwitterionic and anionic phospholipids on the aggregation rate of insulin, lysozyme, transthyretin (TTR) and α- synuclein (α-syn) will be discussed. The manuscript will also critically review the most recent findings on the lipid-induced changes in the secondary structure of protein oligomers and fibrils, as well as reveal the extent to which lipids could alter the toxicity of protein aggregates formed in their presence.
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Affiliation(s)
- Abid Ali
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Tianyi Dou
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Aidan P Holman
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States; Department of Entomology, Texas A&M University, College Station, TX 77843, United States
| | - Andrew Hung
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Luke Osborne
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Davis Pickett
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Axell Rodriguez
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Kiryl Zhaliazka
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Dmitry Kurouski
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States; Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, United States.
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11
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Allakhverdiev ES, Kossalbayev BD, Sadvakasova AK, Bauenova MO, Belkozhayev AM, Rodnenkov OV, Martynyuk TV, Maksimov GV, Allakhverdiev SI. Spectral insights: Navigating the frontiers of biomedical and microbiological exploration with Raman spectroscopy. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2024; 252:112870. [PMID: 38368635 DOI: 10.1016/j.jphotobiol.2024.112870] [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: 11/24/2023] [Revised: 01/04/2024] [Accepted: 02/14/2024] [Indexed: 02/20/2024]
Abstract
Raman spectroscopy (RS), a powerful analytical technique, has gained increasing recognition and utility in the fields of biomedical and biological research. Raman spectroscopic analyses find extensive application in the field of medicine and are employed for intricate research endeavors and diagnostic purposes. Consequently, it enjoys broad utilization within the realm of biological research, facilitating the identification of cellular classifications, metabolite profiling within the cellular milieu, and the assessment of pigment constituents within microalgae. This article also explores the multifaceted role of RS in these domains, highlighting its distinct advantages, acknowledging its limitations, and proposing strategies for enhancement.
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Affiliation(s)
- Elvin S Allakhverdiev
- National Medical Research Center of Cardiology named after academician E.I. Chazov, Academician Chazov 15А St., Moscow 121552, Russia; Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, Moscow, Leninskie Gory 1/12, Moscow 119991, Russia.
| | - Bekzhan D Kossalbayev
- Ecology Research Institute, Khoja Akhmet Yassawi International Kazakh-Turkish University, Turkistan, Kazakhstan; Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, No. 32, West 7th Road, Tianjin Airport Economic Area, 300308 Tianjin, China; Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, Kazakhstan; Department of Chemical and Biochemical Engineering, Institute of Geology and Oil-Gas Business Institute Named after K. Turyssov, Satbayev University, Almaty 050043, Kazakhstan
| | - Asemgul K Sadvakasova
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, Kazakhstan
| | - Meruyert O Bauenova
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, Kazakhstan
| | - Ayaz M Belkozhayev
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050038, Kazakhstan; Department of Chemical and Biochemical Engineering, Institute of Geology and Oil-Gas Business Institute Named after K. Turyssov, Satbayev University, Almaty 050043, Kazakhstan; M.A. Aitkhozhin Institute of Molecular Biology and Biochemistry, Almaty 050012, Kazakhstan
| | - Oleg V Rodnenkov
- National Medical Research Center of Cardiology named after academician E.I. Chazov, Academician Chazov 15А St., Moscow 121552, Russia
| | - Tamila V Martynyuk
- National Medical Research Center of Cardiology named after academician E.I. Chazov, Academician Chazov 15А St., Moscow 121552, Russia
| | - Georgy V Maksimov
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, Moscow, Leninskie Gory 1/12, Moscow 119991, Russia
| | - Suleyman I Allakhverdiev
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; Institute of Basic Biological Problems, FRC PSCBR Russian Academy of Sciences, Pushchino 142290, Russia; Faculty of Engineering and Natural Sciences, Bahcesehir University, Istanbul, Turkey.
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12
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Patil H, Vemula SK, Narala S, Lakkala P, Munnangi SR, Narala N, Jara MO, Williams RO, Terefe H, Repka MA. Hot-Melt Extrusion: from Theory to Application in Pharmaceutical Formulation-Where Are We Now? AAPS PharmSciTech 2024; 25:37. [PMID: 38355916 DOI: 10.1208/s12249-024-02749-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 01/19/2024] [Indexed: 02/16/2024] Open
Abstract
Hot-melt extrusion (HME) is a globally recognized, robust, effective technology that enhances the bioavailability of poorly soluble active pharmaceutical ingredients and offers an efficient continuous manufacturing process. The twin-screw extruder (TSE) offers an extremely resourceful customizable mixer that is used for continuous compounding and granulation by using different combinations of conveying elements, kneading elements (forward and reverse configuration), and distributive mixing elements. TSE is thus efficiently utilized for dry, wet, or melt granulation not only to manufacture dosage forms such as tablets, capsules, or granule-filled sachets, but also for designing novel formulations such as dry powder inhalers, drying units for granules, nanoextrusion, 3D printing, complexation, and amorphous solid dispersions. Over the past decades, combined academic and pharmaceutical industry collaborations have driven novel innovations for HME technology, which has resulted in a substantial increase in published articles and patents. This article summarizes the challenges and models for executing HME scale-up. Additionally, it covers the benefits of continuous manufacturing, process analytical technology (PAT) considerations, and regulatory requirements. In summary, this well-designed review builds upon our earlier publication, probing deeper into the potential of twin-screw extruders (TSE) for various new applications.
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Affiliation(s)
- Hemlata Patil
- Department of Product Development, Catalent Pharma Solutions, 14 Schoolhouse Road, Somerset, New Jersey, 08873, USA
| | - Sateesh Kumar Vemula
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, Oxford, Mississippi, 38677, USA
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, 144001, India
| | - Sagar Narala
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, Oxford, Mississippi, 38677, USA
| | - Preethi Lakkala
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, Oxford, Mississippi, 38677, USA
| | - Siva Ram Munnangi
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, Oxford, Mississippi, 38677, USA
| | - Nagarjuna Narala
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, Oxford, Mississippi, 38677, USA
| | - Miguel O Jara
- Molecular Pharmaceutics and Drug Delivery Division, College of Pharmacy, The University of Texas at Austin, 2409 University Avenue, Austin, Texas, 78712, USA
| | - Robert O Williams
- Molecular Pharmaceutics and Drug Delivery Division, College of Pharmacy, The University of Texas at Austin, 2409 University Avenue, Austin, Texas, 78712, USA
| | - Hibreniguss Terefe
- Department of Product Development, Catalent Pharma Solutions, 14 Schoolhouse Road, Somerset, New Jersey, 08873, USA
| | - Michael A Repka
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, Oxford, Mississippi, 38677, USA.
- Pii Center for Pharmaceutical Technology, The University of Mississippi, University, Oxford, Mississippi, 38677, USA.
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13
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Primera-Pedrozo OM, Mantilla ABC, Myers TL, Gu Y, El-Khoury PZ. Controlling the Fluctuating Tip-Enhanced Raman Spectra of Chloramben on Silver Nanocubes. Anal Chem 2024. [PMID: 38315807 DOI: 10.1021/acs.analchem.3c05542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Tip-enhanced Raman (TER) scattering from molecules residing at plasmonic junctions can be used to detect, identify, and image single molecules. This is most evident for flat molecules interrogated under conditions of extreme temperatures and pressure. It is also the case for (bio)molecular systems that feature preferred orientations/conformations under ambient laboratory conditions. More complex molecules that can adopt multiple conformations and/or feature different protonation or charge states give rise to complex TER spectra. We illustrate how the latter can be controlled in the case of chloramben molecules coated onto plasmonic silver nanocubes. We show that characteristic molecular Raman spectra cannot be obtained when tunneling plasmons are operative, i.e., when the tip is in direct contact with the chemically functionalized plasmonic nanoparticles. We rationalize these observations and propose an approach to less invasive and hence more analytical TER spectral imaging.
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Affiliation(s)
- Oliva M Primera-Pedrozo
- Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
| | - Alexander B C Mantilla
- Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, United States
| | - Tanya L Myers
- Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
| | - Yi Gu
- Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, United States
| | - Patrick Z El-Khoury
- Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
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14
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Filez M, Walke P, Le-The H, Toyouchi S, Peeters W, Tomkins P, Eijkel JCT, De Feyter S, Detavernier C, De Vos DE, Uji-I H, Roeffaers MBJ. Nanoscale Chemical Diversity of Coke Deposits on Nanoprinted Metal Catalysts Visualized by Tip-Enhanced Raman Spectroscopy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2305984. [PMID: 37938141 DOI: 10.1002/adma.202305984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 10/31/2023] [Indexed: 11/09/2023]
Abstract
Coke formation is the prime cause of catalyst deactivation, where undesired carbon wastes block the catalyst surface and hinder further reaction in a broad gamut of industrial chemical processes. Yet, the origins of coke formation and their distribution across the catalyst remain elusive, obstructing the design of coke-resistant catalysts. Here, the first-time application of tip-enhanced Raman spectroscopy (TERS) is demonstrated as a nanoscale chemical probe to localize and identify coke deposits on a post-mortem metal nanocatalyst. Monitoring coke at the nanoscale circumvents bulk averaging and reveals the local nature of coke with unmatched detail. The nature of coke is chemically diverse and ranges from nanocrystalline graphite to disordered and polymeric coke, even on a single nanoscale location of a top-down nanoprinted SiO2 -supported Pt catalyst. Surprisingly, not all Pt is an equal producer of coke, where clear isolated coke "hotspots" are present non-homogeneously on Pt which generate large amounts of disordered coke. After their formation, coke shifts to the support and undergoes long-range transport on the surrounding SiO2 surface, where it becomes more graphitic. The presented results provide novel guidelines to selectively free-up the coked metal surface at more mild rejuvenation conditions, thus securing the long-term catalyst stability.
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Affiliation(s)
- Matthias Filez
- Centre for Membrane Separations, Adsorption, Catalysis and Spectroscopy for Sustainable Solutions (cMACS), KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
- Conformal Coating of Nanomaterials (CoCooN), Department of Solid State Sciences, Ghent University, Krijgslaan 281/S1, Ghent, 9000, Belgium
| | - Peter Walke
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
| | - Hai Le-The
- BIOS Lab-on-a-Chip Group, MESA+ Institute, University of Twente, Enschede, NB, 7522, The Netherlands
| | - Shuichi Toyouchi
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
| | - Wannes Peeters
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
| | - Patrick Tomkins
- Centre for Membrane Separations, Adsorption, Catalysis and Spectroscopy for Sustainable Solutions (cMACS), KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
| | - Jan C T Eijkel
- BIOS Lab-on-a-Chip Group, MESA+ Institute, University of Twente, Enschede, NB, 7522, The Netherlands
| | - Steven De Feyter
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
| | - Christophe Detavernier
- Conformal Coating of Nanomaterials (CoCooN), Department of Solid State Sciences, Ghent University, Krijgslaan 281/S1, Ghent, 9000, Belgium
| | - Dirk E De Vos
- Centre for Membrane Separations, Adsorption, Catalysis and Spectroscopy for Sustainable Solutions (cMACS), KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
| | - Hiroshi Uji-I
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
- Research Institute for Electronic Science (RIES), Hokkaido University, Sapporo, Hokkaido, 001-0020, Japan
- Division of Information Science and Technology, Graduate School of Information Science and Technology, Hokkaido University, Sapporo, Hokkaido, 060-0814, Japan
| | - Maarten B J Roeffaers
- Centre for Membrane Separations, Adsorption, Catalysis and Spectroscopy for Sustainable Solutions (cMACS), KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
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15
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Hua Y, Zhu C, Zhang L, Dong F. Designing Surface and Interface Structures of Copper-Based Catalysts for Enhanced Electrochemical Reduction of CO 2 to Alcohols. MATERIALS (BASEL, SWITZERLAND) 2024; 17:600. [PMID: 38592003 PMCID: PMC10856707 DOI: 10.3390/ma17030600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/17/2024] [Accepted: 01/23/2024] [Indexed: 04/10/2024]
Abstract
Electrochemical CO2 reduction (ECR) has emerged as a promising solution to address both the greenhouse effect caused by CO2 emissions and the energy shortage resulting from the depletion of nonrenewable fossil fuels. The production of multicarbon (C2+) products via ECR, especially high-energy-density alcohols, is highly desirable for industrial applications. Copper (Cu) is the only metal that produces alcohols with appreciable efficiency and kinetic viability in aqueous solutions. However, poor product selectivity is the main technical problem for applying the ECR technology in alcohol production. Extensive research has resulted in the rational design of electrocatalyst architectures using various strategies. This design significantly affects the adsorption energetics of intermediates and the reaction pathways for alcohol production. In this review, we focus on the design of effective catalysts for ECR to alcohols, discussing fundamental principles, innovative strategies, and mechanism understanding. Furthermore, the challenges and prospects in utilizing Cu-based materials for alcohol production via ECR are discussed.
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Affiliation(s)
- Yanbo Hua
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, China
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University Shanghai, Shanghai 200438, China
| | - Chenyuan Zhu
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, China
| | - Liming Zhang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University Shanghai, Shanghai 200438, China
| | - Fan Dong
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, China
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
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16
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Zheng X, Ye Z, Akmal Z, He C, Zhang J, Wang L. Recent progress in SERS monitoring of photocatalytic reactions. Chem Soc Rev 2024; 53:656-683. [PMID: 38165865 DOI: 10.1039/d3cs00462g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
Surface-enhanced Raman spectroscopy (SERS) is a powerful analytical technique renowned for its ultra-high sensitivity. Extensive research in SERS has led to the development of a wide range of SERS substrates, including plasmonic metals, semiconductors, metal organic frameworks, and their assemblies. Some of these materials are also excellent photocatalysts, and by taking advantage of their bifunctional characteristics, the photocatalytic processes that occur on their surface can be monitored in situ via SERS. This provides us with unique opportunities to gain valuable insights into the intricate details of the photocatalytic processes that are challenging to access using other techniques. In this review, we highlight key development in in situ and/or real-time SERS-tracking of photocatalytic reactions. We begin by providing a brief account of recent developments in SERS substrates, followed by discussions on how SERS can be used to elucidate crucial aspects of photocatalytic processes, including: (1) the influence of the surrounding media on charge carrier extraction; (2) the direction of charge carrier transfer; (3) the pathway of photocatalytic activation; and (4) differentiation between the effects of photo-thermal and energetic electrons. Additionally, we discuss the benefits of tip-enhanced Raman spectroscopy (TERS) due to the ability to achieve high-spatial-resolution measurements. Finally, we address major challenges and propose potential directions for the future of SERS monitoring of photocatalytic reactions. By leveraging the capabilities of SERS, we can uncover new insights into photocatalytic processes, paving the way for advancements in sustainable energy and environmental remediation.
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Affiliation(s)
- Xinlu Zheng
- Shanghai Engineering Research Center for Multi-Media Environmental Catalysis and Resource Utilization, Key Lab for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science &Technology, 130 Meilong Road, Shanghai, 200237, China.
| | - Ziwei Ye
- Shanghai Engineering Research Center for Multi-Media Environmental Catalysis and Resource Utilization, Key Lab for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science &Technology, 130 Meilong Road, Shanghai, 200237, China.
| | - Zeeshan Akmal
- Shanghai Engineering Research Center for Multi-Media Environmental Catalysis and Resource Utilization, Key Lab for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science &Technology, 130 Meilong Road, Shanghai, 200237, China.
| | - Chun He
- Shanghai Engineering Research Center for Multi-Media Environmental Catalysis and Resource Utilization, Key Lab for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science &Technology, 130 Meilong Road, Shanghai, 200237, China.
| | - Jinlong Zhang
- Shanghai Engineering Research Center for Multi-Media Environmental Catalysis and Resource Utilization, Key Lab for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science &Technology, 130 Meilong Road, Shanghai, 200237, China.
| | - Lingzhi Wang
- Shanghai Engineering Research Center for Multi-Media Environmental Catalysis and Resource Utilization, Key Lab for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science &Technology, 130 Meilong Road, Shanghai, 200237, China.
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17
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Qian N, Gao X, Lang X, Deng H, Bratu TM, Chen Q, Stapleton P, Yan B, Min W. Rapid single-particle chemical imaging of nanoplastics by SRS microscopy. Proc Natl Acad Sci U S A 2024; 121:e2300582121. [PMID: 38190543 PMCID: PMC10801917 DOI: 10.1073/pnas.2300582121] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 10/24/2023] [Indexed: 01/10/2024] Open
Abstract
Plastics are now omnipresent in our daily lives. The existence of microplastics (1 µm to 5 mm in length) and possibly even nanoplastics (<1 μm) has recently raised health concerns. In particular, nanoplastics are believed to be more toxic since their smaller size renders them much more amenable, compared to microplastics, to enter the human body. However, detecting nanoplastics imposes tremendous analytical challenges on both the nano-level sensitivity and the plastic-identifying specificity, leading to a knowledge gap in this mysterious nanoworld surrounding us. To address these challenges, we developed a hyperspectral stimulated Raman scattering (SRS) imaging platform with an automated plastic identification algorithm that allows micro-nano plastic analysis at the single-particle level with high chemical specificity and throughput. We first validated the sensitivity enhancement of the narrow band of SRS to enable high-speed single nanoplastic detection below 100 nm. We then devised a data-driven spectral matching algorithm to address spectral identification challenges imposed by sensitive narrow-band hyperspectral imaging and achieve robust determination of common plastic polymers. With the established technique, we studied the micro-nano plastics from bottled water as a model system. We successfully detected and identified nanoplastics from major plastic types. Micro-nano plastics concentrations were estimated to be about 2.4 ± 1.3 × 105 particles per liter of bottled water, about 90% of which are nanoplastics. This is orders of magnitude more than the microplastic abundance reported previously in bottled water. High-throughput single-particle counting revealed extraordinary particle heterogeneity and nonorthogonality between plastic composition and morphologies; the resulting multidimensional profiling sheds light on the science of nanoplastics.
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Affiliation(s)
- Naixin Qian
- Department of Chemistry, Columbia University, New York, NY10027
| | - Xin Gao
- Department of Chemistry, Columbia University, New York, NY10027
| | - Xiaoqi Lang
- Department of Chemistry, Columbia University, New York, NY10027
| | - Huiping Deng
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY10964
| | | | - Qixuan Chen
- Department of Biostatistics, Columbia University Mailman School of Public Health, New York, NY10032
| | - Phoebe Stapleton
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Environmental and Occupational Health Sciences Institute, Rutgers University, New Brunswick, NJ08854
| | - Beizhan Yan
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY10964
| | - Wei Min
- Department of Chemistry, Columbia University, New York, NY10027
- Department of Biomedical Engineering, Columbia University, New York, NY10027
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18
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Schultz JF, Krylyuk S, Schwartz JJ, Davydov AV, Centrone A. Isotopic effects on in-plane hyperbolic phonon polaritons in MoO 3. NANOPHOTONICS 2024; 13:10.1515/nanoph-2023-0717. [PMID: 38846933 PMCID: PMC11155493 DOI: 10.1515/nanoph-2023-0717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2024]
Abstract
Hyperbolic phonon polaritons (HPhPs), hybrids of light and lattice vibrations in polar dielectric crystals, empower nanophotonic applications by enabling the confinement and manipulation of light at the nanoscale. Molybdenum trioxide (α-MoO3) is a naturally hyperbolic material, meaning that its dielectric function deterministically controls the directional propagation of in-plane HPhPs within its reststrahlen bands. Strategies such as substrate engineering, nano- and heterostructuring, and isotopic enrichment are being developed to alter the intrinsic die ectric functions of natural hyperbolic materials and to control the confinement and propagation of HPhPs. Since isotopic disorder can limit phonon-based processes such as HPhPs, here we synthesize isotopically enriched 92MoO3 (92Mo: 99.93 %) and 100MoO3 (100Mo: 99.01 %) crystals to tune the properties and dispersion of HPhPs with respect to natural α-MoO3, which is composed of seven stable Mo isotopes. Real-space, near-field maps measured with the photothermal induced resonance (PTIR) technique enable comparisons of inplane HPhPs in α-MoO3 and isotopically enriched analogues within a reststrahlen band (≈820 cm-1 to ≈ 972 cm-1). Results show that isotopic enrichment (e.g., 92MoO3 and 100MoO3) alters the dielectric function, shifting the HPhP dispersion (HPhP angular wavenumber × thickness vs IR frequency) by ≈-7% and ≈ +9 %, respectively, and changes the HPhP group velocities by ≈ ±12 %, while the lifetimes (≈ 3 ps) in 92MoO3 were found to be slightly improved (≈ 20 %). The latter improvement is attributed to a decrease in isotopic disorder. Altogether, isotopic enrichment was found to offer fine control over the properties that determine the anisotropic in-plane propagation of HPhPs in α-MoO3, which is essential to its implementation in nanophotonic applications.
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Affiliation(s)
- Jeremy F. Schultz
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | - Sergiy Krylyuk
- Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | - Jeffrey J. Schwartz
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA; and Department of Electrical and Computer Engineering, University of Maryland, College Park, Maryland 20742, USA
| | - Albert V. Davydov
- Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | - Andrea Centrone
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
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19
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Ali A, Zhaliazka K, Dou T, Holman AP, Kumar R, Kurouski D. Secondary structure and toxicity of transthyretin fibrils can be altered by unsaturated fatty acids. Int J Biol Macromol 2023; 253:127241. [PMID: 37804888 DOI: 10.1016/j.ijbiomac.2023.127241] [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: 08/15/2023] [Revised: 09/24/2023] [Accepted: 10/02/2023] [Indexed: 10/09/2023]
Abstract
Transthyretin amyloidosis is a severe pathology characterized by the progressive accumulation of transthyretin (TTR) in various organs and tissues. This highly conserved through vertebrate evolution protein transports thyroid hormone thyroxine. In our bodies, TTR can interact with a large number of molecules, including ω-3 and ω-6 polyunsaturated fatty acids (PUFAs) that are broadly used as food supplies. In this study, we investigated the effect of ω-3 and ω-6 PUFAs, as well as their fully saturated analog, on TTR aggregation. Our results showed that both ω-3 and ω-6 PUFAs strongly decreased the rate of TTR aggregation. We also found that in the presence of PUFAs, TTR formed morphologically different fibrils compared to the lipid-free environment. Nano-Infrared imaging revealed that these fibrils had drastically different secondary structures compared to the secondary structure of TTR aggregates formed in the PUFAs-free environment. Furthermore, TTR fibrils formed in the presence of ω-3 and ω-6 PUFAs exerted significantly lower cell toxicity compared to the fibrils formed in the absence of fatty acids.
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Affiliation(s)
- Abid Ali
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Kiryl Zhaliazka
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Tianyi Dou
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Aidan P Holman
- Department of Entomology, Texas A&M University, College Station, TX 77843, United States
| | - Rakesh Kumar
- Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Dmitry Kurouski
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States; Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, United States.
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20
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Ali A, Zhaliazka K, Dou T, Holman AP, Kurouski D. Cholesterol and Sphingomyelin Uniquely Alter the Rate of Transthyretin Aggregation and Decrease the Toxicity of Amyloid Fibrils. J Phys Chem Lett 2023; 14:10886-10893. [PMID: 38033106 PMCID: PMC10863059 DOI: 10.1021/acs.jpclett.3c02613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 11/22/2023] [Accepted: 11/28/2023] [Indexed: 12/02/2023]
Abstract
Transthyretin (TTR) is a small tetrameric protein that aggregates, forming highly toxic oligomers and fibrils. In the blood and cerebrospinal fluid, TTR can interact with various biomolecules, phospho- and sphingolipids, and cholesterol on the red blood cell plasma membrane. However, the role of these molecules in TTR aggregation remains unclear. In this study, we investigated the extent to which phosphatidylcholine (PC), sphingomyelin (SM), and cholesterol (Cho), important components of plasma membranes, could alter the rate of TTR aggregation. We found that PC and SM inhibited TTR aggregation whereas Cho strongly accelerated it. The presence of these lipids during the stage of protein aggregation uniquely altered the morphology and secondary structure of the TTR fibrils, which changed the toxicity of these protein aggregates. These results suggest that interactions of TTR with red blood cells, whose membranes are rich with these lipids, can trigger irreversible aggregation of TTR and cause transthyretin amyloidosis.
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Affiliation(s)
- Abid Ali
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Kiryl Zhaliazka
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Tianyi Dou
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Aidan P. Holman
- Department
of Entomology, Texas A&M University, College Station, Texas 77843, United States
| | - Dmitry Kurouski
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
- Department
of Biomedical Engineering, Texas A&M
University, College
Station, Texas 77843, United States
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21
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Li J, Chen S, Ratner D, Blu T, Pianetta P, Liu Y. Nanoscale chemical imaging with structured X-ray illumination. Proc Natl Acad Sci U S A 2023; 120:e2314542120. [PMID: 38015849 PMCID: PMC10710092 DOI: 10.1073/pnas.2314542120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 10/23/2023] [Indexed: 11/30/2023] Open
Abstract
High-resolution imaging with compositional and chemical sensitivity is crucial for a wide range of scientific and engineering disciplines. Although synchrotron X-ray imaging through spectromicroscopy has been tremendously successful and broadly applied, it encounters challenges in achieving enhanced detection sensitivity, satisfactory spatial resolution, and high experimental throughput simultaneously. In this work, based on structured illumination, we develop a single-pixel X-ray imaging approach coupled with a generative image reconstruction model for mapping the compositional heterogeneity with nanoscale resolvability. This method integrates a full-field transmission X-ray microscope with an X-ray fluorescence detector and eliminates the need for nanoscale X-ray focusing and raster scanning. We experimentally demonstrate the effectiveness of our approach by imaging a battery sample composed of mixed cathode materials and successfully retrieving the compositional variations of the imaged cathode particles. Bridging the gap between structural and chemical characterizations using X-rays, this technique opens up vast opportunities in the fields of biology, environmental, and materials science, especially for radiation-sensitive samples.
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Affiliation(s)
- Jizhou Li
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA94025
- School of Data Science, City University of Hong Kong, Hong Kong, China
| | - Si Chen
- X-ray Science Division, Argonne National Laboratory, Lemont, IL60439
| | - Daniel Ratner
- Machine Learning Initiative, SLAC National Accelerator Laboratory, Menlo Park, CA94025
| | - Thierry Blu
- Department of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong, China
| | - Piero Pianetta
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA94025
| | - Yijin Liu
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX78705
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22
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Li Z, Rigor J, Ehtesabi S, Gojare S, Kupfer S, Gräfe S, Large N, Kurouski D. Role of Plasmonic Antenna in Hot Carrier-Driven Reactions on Bimetallic Nanostructures. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:22635-22645. [PMID: 38357685 PMCID: PMC10863061 DOI: 10.1021/acs.jpcc.3c06520] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/20/2023] [Accepted: 10/20/2023] [Indexed: 02/16/2024]
Abstract
Noble metal nanostructures can efficiently harvest electromagnetic radiation, which, in turn, is used to generate localized surface plasmon resonances. Surface plasmons decay, producing hot carriers, that is, short-lived species that can trigger chemical reactions on metallic surfaces. However, noble metal nanostructures catalyze only a very small number of chemical reactions. This limitation can be overcome by coupling such nanostructures with catalytic-active metals. Although the role of such catalytically active metals in plasmon-driven catalysis is well-understood, the mechanistics of a noble metal antenna in such chemistry remains unclear. In this study, we utilize tip-enhanced Raman spectroscopy, an innovative nanoscale imaging technique, to investigate the rates and yields of plasmon-driven reactions on mono- and bimetallic gold- and silver-based nanostructures. We found that silver nanoplates (AgNPs) demonstrate a significantly higher yield of 4-nitrobenzenehtiol to p,p'-dimercaptoazobisbenzene (DMAB) reduction than gold nanoplates (AuNPs). We also observed substantially greater yields of DMAB on silver-platinum and silver-palladium nanoplates (Ag@PtNPs and Ag@PdNPs) compared to their gold analogues, Au@PtNPs and Au@PdNPs. Furthermore, Ag@PtNPs exhibited enhanced reactivity in 4-mercatophenylmethanol to 4-mercaptobenzoic acid oxidation compared to Au@PtNPs. These results showed that silver-based bimetallic nanostructures feature much greater reactivity compared to their gold-based analogues.
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Affiliation(s)
- Zhandong Li
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Joel Rigor
- Department
of Physics and Astronomy, The University
of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Sadaf Ehtesabi
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Siddhi Gojare
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Stephan Kupfer
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Stefanie Gräfe
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Nicolas Large
- Department
of Physics and Astronomy, The University
of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Dmitry Kurouski
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
- The
Institute for Quantum Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
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23
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Hamadeh A, Palmino F, Mathurin J, Deniset-Besseau A, Grosnit L, Luzet V, Jeannoutot J, Dazzi A, Chérioux F. Toward conformational identification of molecules in 2D and 3D self-assemblies on surfaces. Commun Chem 2023; 6:246. [PMID: 37951991 PMCID: PMC10640604 DOI: 10.1038/s42004-023-01036-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 10/20/2023] [Indexed: 11/14/2023] Open
Abstract
The design of supramolecular networks based on organic molecules deposited on surfaces, is highly attractive for various applications. One of the remaining challenges is the expansion of monolayers to well-ordered multilayers in order to enhance the functionality and complexity of self-assemblies. In this study, we present an assessment of molecular conformation from 2D to 3D supramolecular networks adsorbed onto a HOPG surface under ambient conditions utilizing a combination of scanning probe microscopies and atomic force microscopy- infrared (AFM-IR). We have observed that the infrared (IR) spectra of the designed molecules vary from layer to layer due to the modifications in the dihedral angle between the C=O group and the neighboring phenyl ring, especially in the case of a 3D supramolecular network consisting of multiple layers of molecules.
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Affiliation(s)
- Ali Hamadeh
- Université de Franche-Comté, FEMTO-ST, CNRS, F-25000, Besançon, France
| | - Frank Palmino
- Université de Franche-Comté, FEMTO-ST, CNRS, F-25000, Besançon, France
| | - Jérémie Mathurin
- Université de Paris-Saclay, Institut de Chimie-Physique, F-91400, Orsay, France
| | | | - Louis Grosnit
- Université de Franche-Comté, FEMTO-ST, CNRS, F-25000, Besançon, France
| | - Vincent Luzet
- Université de Franche-Comté, FEMTO-ST, CNRS, F-25000, Besançon, France
| | | | - Alexandre Dazzi
- Université de Paris-Saclay, Institut de Chimie-Physique, F-91400, Orsay, France
| | - Frédéric Chérioux
- Université de Franche-Comté, FEMTO-ST, CNRS, F-25000, Besançon, France.
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24
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Kurouski D. Elucidating the Role of Lipids in the Aggregation of Amyloidogenic Proteins. Acc Chem Res 2023; 56:2898-2906. [PMID: 37824095 PMCID: PMC10862471 DOI: 10.1021/acs.accounts.3c00386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Indexed: 10/13/2023]
Abstract
The abrupt aggregation of misfolded proteins is linked to the onset and spread of amyloidogenic diseases, including diabetes type 2, systemic amyloidosis, and Alzheimer's (AD) and Parkinson's diseases (PD). Although the exact cause of these pathological processes is unknown, a growing body of evidence suggests that amyloid diseases are triggered by misfolded or unfolded proteins, forming highly toxic oligomers. These transient species exhibit high structural and morphological heterogeneity. Protein oligomers can also propagate into β-sheet-rich filaments that braid and coil with other filaments to form amyloid fibrils and supramolecular structures with both flat and twisted morphologies. Microscopic examination of protein deposits formed in the brains of both AD and PD patients revealed the presence of fragments of lipid membranes. Furthermore, nanoscale infrared analysis of ex vivo extracted fibrils revealed the presence of lipids in their structure (Zhaliazka, K.; Kurouski, D. Protein Sci. 2023, 32, e4598). These findings demonstrated that lipid bilayers could play an important role in the aggregation of misfolded proteins.Experimental findings summarized in this Account show that (i) lipids uniquely change the aggregation rate of amyloidogenic proteins. In this case, the observed changes in the rates directly depend on the net charge of the lipid and the length and saturation of lipid fatty acids (FAs). For instance, zwitterionic phosphatidylcholine (PC) with 14:0 FAs inhibited the aggregation of insulin, lysozyme, and α-synuclein (α-Syn), whereas anionic phosphatidylserine with the same FAs dramatically accelerated the aggregation rate of these proteins (Dou, T., et al. J. Phys. Chem. Lett. 2021, 12, 4407. Matveyenka, M., et al. FASEB J. 2022, 36, e22543. Rizevsky, S., et al. J. Phys. Chem. Lett. 2022, 13, 2467). Furthermore, (ii) lipids uniquely alter the secondary structure and morphology of protein oligomers and fibrils formed in their presence. Utilization of nano-infrared spectroscopy revealed that such aggregates, as well as ex vivo extracted fibrils, possessed lipids in their structure. These findings are significant because (iii) lipids uniquely alter the toxicity of amyloid oligomers and fibrils formed in their presence. Specifically, PC lowered the toxicity of insulin and lysozyme oligomers, whereas α-Syn oligomers formed in the presence of this phospholipid were found to be significantly more toxic to rat dopaminergic cells compared to α-Syn oligomers grown in the lipid-free environment. Thus, the toxicity of protein oligomers and fibrils is directly determined by the chemical structure of the lipid and the secondary structure of amyloidogenic proteins (Dou, T., et al. J. Phys. Chem. Lett. 2021, 12, 4407. Matveyenka, M., et al. FASEB J. 2022, 36, e22543. Rizevsky, S., et al. J. Phys. Chem. Lett. 2022, 13, 2467). Experimental results discussed in this Account also suggest that amyloidogenic diseases could be caused by pathological changes in the lipid composition of both plasma and organelle membranes, which, in turn, may trigger protein aggregation that results in the formation of highly toxic oligomers and fibrils. Finally, the Account discusses the effects of polyunsaturated FAs on the aggregation properties of amyloidogenic proteins. Experimental findings reported by the author's laboratory revealed that polyunsaturated FAs drastically accelerated the aggregation rate of both insulin and α-Syn as well as strongly changed the secondary structure of amyloid fibrils formed in their presence.
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Affiliation(s)
- Dmitry Kurouski
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
- Department
of Biomedical Engineering, Texas A&M
University, College Station, Texas 77843, United States
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25
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Ali A, Zhaliazka K, Dou T, Holman AP, Kurouski D. Saturation of fatty acids in phosphatidic acid uniquely alters transthyretin stability changing morphology and toxicity of amyloid fibrils. Chem Phys Lipids 2023; 257:105350. [PMID: 37858615 DOI: 10.1016/j.chemphyslip.2023.105350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/11/2023] [Accepted: 10/15/2023] [Indexed: 10/21/2023]
Abstract
Transthyretin (TTR) is a small, β-sheet-rich tetrameric protein that transports thyroid hormone thyroxine and retinol. Phospholipids, including phosphatidic acid (PA), can uniquely alter the stability of amyloidogenic proteins. However, the role of PA in TTR aggregation remains unclear. In this study, we investigated the effect of saturation of fatty acids (FAs) in PA on the rate of TTR aggregation. We also reveal the extent to which PAs with different length and saturation of FAs altered the morphology and secondary structure of TTR aggregates. Our results showed that TTR aggregation in the equimolar presence of PAs with different length and saturation of FAs yielded structurally and morphologically different fibrils compared to those formed in the lipid-free environment. We also found that PAs drastically lowered the toxicity of TTR aggregates formed in the presence of this phospholipid. These results shed light on the role of PA in the stability of TTR and transthyretin amyloidosis.
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Affiliation(s)
- Abid Ali
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Kiryl Zhaliazka
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Tianyi Dou
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Aidan P Holman
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States; Department of Entomology, Texas A&M University, College Station, TX 77843, United States
| | - Dmitry Kurouski
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States; Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, United States.
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26
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V. D. dos Santos AC, Hondl N, Ramos-Garcia V, Kuligowski J, Lendl B, Ramer G. AFM-IR for Nanoscale Chemical Characterization in Life Sciences: Recent Developments and Future Directions. ACS MEASUREMENT SCIENCE AU 2023; 3:301-314. [PMID: 37868358 PMCID: PMC10588935 DOI: 10.1021/acsmeasuresciau.3c00010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/30/2023] [Accepted: 05/30/2023] [Indexed: 10/24/2023]
Abstract
Despite the ubiquitous absorption of mid-infrared (IR) radiation by virtually all molecules that belong to the major biomolecules groups (proteins, lipids, carbohydrates, nucleic acids), the application of conventional IR microscopy to the life sciences remained somewhat limited, due to the restrictions on spatial resolution imposed by the diffraction limit (in the order of several micrometers). This issue is addressed by AFM-IR, a scanning probe-based technique that allows for chemical analysis at the nanoscale with resolutions down to 10 nm and thus has the potential to contribute to the investigation of nano and microscale biological processes. In this perspective, in addition to a concise description of the working principles and operating modes of AFM-IR, we present and evaluate the latest key applications of AFM-IR to the life sciences, summarizing what the technique has to offer to this field. Furthermore, we discuss the most relevant current limitations and point out potential future developments and areas for further application for fruitful interdisciplinary collaboration.
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Affiliation(s)
| | - Nikolaus Hondl
- Institute
of Chemical Technologies and Analytics, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
| | - Victoria Ramos-Garcia
- Health
Research Institute La Fe, Avenida Fernando Abril Martorell 106, 46026 Valencia, Spain
| | - Julia Kuligowski
- Health
Research Institute La Fe, Avenida Fernando Abril Martorell 106, 46026 Valencia, Spain
| | - Bernhard Lendl
- Institute
of Chemical Technologies and Analytics, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
| | - Georg Ramer
- Institute
of Chemical Technologies and Analytics, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
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27
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Han J, Park S, Seid MG, Park B, Lee SH, Kim HM, Lee C, Lee J, Kim JH, Hong SW. Real-time morphological detection of label-free submicron-sized plastics using flow-channeled differential interference contrast microscopy. JOURNAL OF HAZARDOUS MATERIALS 2023; 459:132207. [PMID: 37543019 DOI: 10.1016/j.jhazmat.2023.132207] [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: 06/07/2023] [Revised: 07/19/2023] [Accepted: 07/31/2023] [Indexed: 08/07/2023]
Abstract
Owing to the surge in plastic waste generated during the COVID-19 pandemic, concerns regarding microplastic pollution in aqueous environments are increasing. Since microplastics (MPs) are broken down into submicron (< 1 µm) and nanoscale plastics, their real-time morphological detection in water is necessary. However, the decrease in the scattering cross-section of MPs in aqueous media precludes morphological detection by bright-field microscopy. To address this problem, we propose and demonstrate a differential interference contrast (DIC) system that incorporates a magnification-enhancing system to detect MPs in aqueous samples. To detect MPs in both the stationary and mobile phases, a microfluidic chip was designed, taking into consideration the imaging depth of focus and flow resistance. MPs of various sizes flowing in deionized, tap, and pond water at varying speeds were observed under Static and Flow conditions. Successful real-time morphological detection and quantification of polystyrene beads down to 200 nm at a constant flow rate in water were achieved. Thus, the proposed novel method can significantly reduce analysis time and improve the size-detection limit. The proposed DIC microscopy system can be coupled with Raman or infrared spectroscopy in future studies for chemical composition analysis. ENVIRONMENTAL IMPLICATION: Microplastics (MPs), particularly submicron plastics < 1-µm, can pose a risk to human health and aquatic ecosystems. Existing methods for detecting MPs in the aqueous phase have several limitations, including the use of expensive instruments and prolonged and labor-intensive procedures. Our results clearly demonstrated that a new low-cost flow-channeled differential interference contrast microscopy enables the real-time morphological detection and quantification of MPs down to 200 nm under flowing conditions without sample labeling. Consequently, our proposed rapid method for accurate quantitative measurements can serve as a valuable reference for detecting submicron plastics in water samples.
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Affiliation(s)
- Jiyun Han
- Center for Water Cycle Research, Korea Institute of Science and Technology (KIST), Seoul 02792, the Republic of Korea; Department of Energy and Environmental Policy, Graduate School of Energy and Environment (KU-KIST Green School), Korea University, Seoul 02841, the Republic of Korea
| | - Subeen Park
- Sensor System Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, the Republic of Korea; Department of Chemistry, Kookmin University, Seoul 02707, the Republic of Korea
| | - Mingizem Gashaw Seid
- Center for Water Cycle Research, Korea Institute of Science and Technology (KIST), Seoul 02792, the Republic of Korea
| | - Byeongho Park
- Sensor System Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, the Republic of Korea
| | - Soo Hyun Lee
- Center for Brain Technology, Korea Institute of Science and Technology (KIST), Seoul 02792, the Republic of Korea
| | - Hyung Min Kim
- Department of Chemistry, Kookmin University, Seoul 02707, the Republic of Korea
| | - Changha Lee
- School of Chemical and Biological Engineering, Institute of Chemical Process (ICP), and Institute of Engineering Research, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, the Republic of Korea
| | - Jaesang Lee
- Civil, Environmental, and Architectural Engineering, Korea University, Seoul 136-701, the Republic of Korea
| | - Jae Hun Kim
- Sensor System Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, the Republic of Korea.
| | - Seok Won Hong
- Center for Water Cycle Research, Korea Institute of Science and Technology (KIST), Seoul 02792, the Republic of Korea; Department of Energy and Environmental Policy, Graduate School of Energy and Environment (KU-KIST Green School), Korea University, Seoul 02841, the Republic of Korea; Division of Energy & Environment Technology, KIST School, University of Science and Technology, Seoul 02792, the Republic of Korea.
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28
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Kim D, Townsley S, Grassian VH. Vibrational spectroscopy as a probe of heterogeneities within geochemical thin films on macro, micro, and nanoscales. RSC Adv 2023; 13:28873-28884. [PMID: 37790106 PMCID: PMC10543985 DOI: 10.1039/d3ra05179j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 09/25/2023] [Indexed: 10/05/2023] Open
Abstract
Minerals play a critical role in the chemistry occurring along the interface of different environmental systems, including the atmosphere/geosphere and hydrosphere/geosphere. In the past few decades, vibrational spectroscopy has been used as a probe for studying interfacial geochemistry. Here, we compare four different vibrational methods for probing physical and chemical features across different mineral samples and length scales, from the macroscale to nanoscale. These methods include Attenuated Total Reflection - Fourier Transform Infrared (ATR-FTIR), Optical Photothermal Infrared (O-PTIR), Atomic Force Microscopy-Infrared (AFM-IR) and micro-Raman spectroscopy. The emergence of these micro-spectroscopic probes has offered new insights into heterogeneities within geochemical thin films and particles. These developments represent an important step forward for analyzing environmental interfaces and thin films as often these are assumed to be physically and chemically homogeneous. By comparing and integrating data across these measurement techniques, new insights into sample differences and heterogeneities can be gained. For example, interrogation of the various mineral samples at smaller length scales is shown to be particularly informative in highlighting unique chemical environments, including for chemically complex, multicomponent samples such as Arizona Test Dust (AZTD), as well as differences due to crystal orientation.
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Affiliation(s)
- Deborah Kim
- Department of Chemistry and Biochemistry, University of California San Diego La Jolla CA 92093 USA
| | - Samantha Townsley
- Department of Chemistry and Biochemistry, University of California San Diego La Jolla CA 92093 USA
| | - Vicki H Grassian
- Department of Chemistry and Biochemistry, University of California San Diego La Jolla CA 92093 USA
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29
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Li Z, Ehtesabi S, Gojare S, Richter M, Kupfer S, Gräfe S, Kurouski D. Plasmon-Determined Selectivity in Photocatalytic Transformations on Gold and Gold-Palladium Nanostructures. ACS PHOTONICS 2023; 10:3390-3400. [PMID: 38356782 PMCID: PMC10863388 DOI: 10.1021/acsphotonics.3c00893] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Indexed: 02/16/2024]
Abstract
Noble metal nanostructures absorb light producing coherent oscillations of the metal's electrons, so-called localized surface plasmon resonances (LSPRs). LSPRs can decay generating hot carriers, highly energetic species that trigger chemical transformations in the molecules located on the metal surfaces. The number of chemical reactions can be expanded by coupling noble and catalytically active metals. However, it remains unclear whether such mono- and bimetallic nanostructures possess any sensitivity toward one or another chemical reaction if both of them can take place in one molecular analyte. In this study, we utilize tip-enhanced Raman spectroscopy (TERS), an emerging analytical technique that has single-molecule sensitivity and sub-nanometer spatial resolution, to investigate plasmon-driven reactivity of 2-nitro-5-thiolobenzoic acid (2-N-5TBA) on gold and gold@palladium nanoplates (AuNPs and Au@PdNPs). This molecular analyte possesses both nitro and carboxyl groups, which can be reduced or removed by hot carriers. We found that on AuNPs, 2-N-5TBA dimerized forming 4,4'-dimethylazobenzene (DMAB), the bicarbonyl derivative of DMAB, as well as 4-nitrobenzenethiol (4-NBT). Our accompanying theoretical investigation based on density functional theory (DFT) and time-dependent density functional theory (TDDFT) confirmed these findings. The theoretical analysis shows that 2-N-5TBA first dimerized forming the bicarbonyl derivative of DMAB, which then decarboxylated forming DMAB. Finally, DMAB can be further reduced leading to 4-NBT. This reaction mechanism is supported by TERS-determined yields on these three molecules on AuNPs. We also found that on Au@PdNPs, 2-N-5TBA first formed the bicarbonyl derivative of DMAB, which is then reduced to both bihydroxyl-DMAB and 4-amino-3-mercaptobenzoic acid. The yield of these reaction products on Au@PdNPs strictly follows the free-energy potential of these molecules on the metallic surfaces.
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Affiliation(s)
- Zhandong Li
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Sadaf Ehtesabi
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Siddhi Gojare
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Martin Richter
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Stephan Kupfer
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Stefanie Gräfe
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Dmitry Kurouski
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
- Department
of Biomedical Engineering, Texas A&M
University, College Station, Texas 77843, United States
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30
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Ali A, Zhaliazka K, Dou T, Holman AP, Kurouski D. Role of Saturation and Length of Fatty Acids of Phosphatidylserine in the Aggregation of Transthyretin. ACS Chem Neurosci 2023; 14:3499-3506. [PMID: 37676231 PMCID: PMC10862486 DOI: 10.1021/acschemneuro.3c00357] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/23/2023] [Indexed: 09/08/2023] Open
Abstract
The progressive accumulation of transthyretin (TTR), a small protein that transports thyroxine, in various organs and tissues is observed upon transthyretin amyloidosis, a severe pathology that affects the central, peripheral, and autonomic nervous systems. Once expressed in the liver and choroid plexus, TTR is secreted into the bloodstream and cerebrospinal fluid. In addition to thyroxine, TTR interacts with a large number of molecules, including retinol-binding protein and lipids. In this study, we examined the extent to which phosphatidylserine (PS), a phospholipid that is responsible for the recognition of apoptotic cells by macrophages, could alter the stability of TTR. Using thioflavin T assay, we investigated the rates of TTR aggregation in the presence of PS with different lengths and saturation of fatty acids (FAs). We found that all analyzed lipids decelerated the rate of TTR aggregation. We also used a set of biophysical methods to investigate the extent to which the presence of PS altered the morphology and secondary structure of TTR aggregates. Our results showed that the length and saturation of fatty acids in PS uniquely altered the morphology and secondary structure of TTR fibrils. As a result, TTR fibrils that were formed in the presence of PS with different lengths and saturation of FAs exerted significantly lower cell toxicity compared with the TTR aggregates grown in the lipid-free environment. These findings help to reveal the role of PS in transthyretin amyloidosis and determine the role of the length and saturation of FAs in PS on the morphology and secondary structure of TTR fibrils.
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Affiliation(s)
- Abid Ali
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Kiryl Zhaliazka
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Tianyi Dou
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Aidan P. Holman
- Department
of Entomology, Texas A&M University, College Station, Texas 77843, United States
| | - Dmitry Kurouski
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
- Department
of Biomedical Engineering, Texas A&M
University, College Station, Texas 77843, United States
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31
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Dou T, Matveyenka M, Kurouski D. Elucidation of Secondary Structure and Toxicity of α-Synuclein Oligomers and Fibrils Grown in the Presence of Phosphatidylcholine and Phosphatidylserine. ACS Chem Neurosci 2023; 14:3183-3191. [PMID: 37603792 PMCID: PMC10862479 DOI: 10.1021/acschemneuro.3c00314] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 08/09/2023] [Indexed: 08/23/2023] Open
Abstract
Abrupt aggregation of α-synuclein (α-Syn) in the midbrain hypothalamus and thalamus is a hallmark of Parkinson's disease (PD), the fastest growing neurodegenerative pathology, projected to strike 12 million people by 2040 worldwide. In this study, we examine the effect of two phospholipids that are present in neuronal membranes, phosphatidylcholine (PC) and phosphatidylserine (PS), on the rate of α-Syn aggregation. We found that PS accelerated α-Syn aggregation, whereas PC strongly inhibited α-Syn aggregation. We also utilized the nano-infrared imaging technique, also known as atomic force microscopy infrared (AFM-IR) spectroscopy, to investigate whether PC and PS only change the rates or also modify the secondary structure of α-Syn aggregates. We found that both phospholipids uniquely altered the secondary structure of α-Syn aggregates present at the lag and growth phase, as well as the late stage of protein aggregation. In addition, compared to the α-Syn aggregates formed in the lipid-free environment, α-Syn:PC and α-Syn:PS aggregates demonstrated higher cellular toxicity to N27 rat neurons. Interestingly, both α-Syn:PC and α-Syn:PS aggregates showed similar levels of oxidative stress, but α-Syn:PC aggregates exhibited a greater degree of mitochondrial dysfunction compared to α-Syn:PS aggregates.
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Affiliation(s)
- Tianyi Dou
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Mikhail Matveyenka
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Dmitry Kurouski
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
- Department
of Biomedical Engineering, Texas A&M
University, College Station, Texas 77843, United States
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32
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Goel A, Tsikritsis D, Belsey NA, Pendlington R, Glavin S, Chen T. Measurement of chemical penetration in skin using Stimulated Raman scattering microscopy and multivariate curve resolution - alternating least squares. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 296:122639. [PMID: 36989692 DOI: 10.1016/j.saa.2023.122639] [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: 01/04/2023] [Revised: 03/13/2023] [Accepted: 03/14/2023] [Indexed: 06/19/2023]
Abstract
The mechanistic understanding of skin penetration underpins the design, efficacy and risk assessment of many high-value products including functional personal care products, topical and transdermal drugs. Stimulated Raman scattering (SRS) microscopy, a label free chemical imaging tool, combines molecular spectroscopy with submicron spatial information to map the distribution of chemicals as they penetrate the skin. However, the quantification of penetration is hampered by significant interference from Raman signals of skin constituents. This study reports a method for disentangling exogeneous contributions and measuring their permeation profile through human skin combining SRS measurements with chemometrics. We investigated the spectral decomposition capability of multivariate curve resolution - alternating least squares (MCR-ALS) using hyperspectral SRS images of skin dosed with 4-cyanophenol. By performing MCR-ALS on the fingerprint region spectral data, the distribution of 4-cyanophenol in skin was estimated in an attempt to quantify the amount permeated at different depths. The reconstructed distribution was compared with the experimental mapping of CN, a strong vibrational peak in 4-cyanophenol where the skin is spectroscopically silent. The similarity between MCR-ALS resolved and experimental distribution in skin dosed for 4 h was 0.79 which improved to 0.91 for skin dosed for 1 h. The correlation was observed to be lower for deeper layers of skin where SRS signal intensity is low which is an indication of low sensitivity of SRS. This work is the first demonstration, to the best of our knowledge, of combining SRS imaging technique with spectral unmixing methods for direct observation and mapping of the chemical penetration and distribution in biological tissues.
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Affiliation(s)
- Anukrati Goel
- Department of Chemical and Process Engineering, University of Surrey, Guildford, GU2 7XH, UK
| | - Dimitrios Tsikritsis
- Chemical & Biological Sciences Department, National Physical Laboratory, Hampton Road, Teddington, TW11 0LW, UK
| | - Natalie A Belsey
- Department of Chemical and Process Engineering, University of Surrey, Guildford, GU2 7XH, UK; Chemical & Biological Sciences Department, National Physical Laboratory, Hampton Road, Teddington, TW11 0LW, UK
| | - Ruth Pendlington
- Unilever Safety & Environmental Assurance Centre, Colworth Science Park, Bedford, MK44 1LQ, UK
| | - Stephen Glavin
- Unilever Safety & Environmental Assurance Centre, Colworth Science Park, Bedford, MK44 1LQ, UK
| | - Tao Chen
- Department of Chemical and Process Engineering, University of Surrey, Guildford, GU2 7XH, UK.
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33
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Haugstad G. Photothermal AFM-IR Interrogation of Polymeric Materials. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2023; 29:566-567. [PMID: 37613303 DOI: 10.1093/micmic/ozad067.271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- G Haugstad
- Characterization Facility, University of Minnesota, Minneapolis, MN, USA
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34
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Matveyenka M, Zhaliazka K, Kurouski D. Unsaturated fatty acids uniquely alter aggregation rate of α-synuclein and insulin and change the secondary structure and toxicity of amyloid aggregates formed in their presence. FASEB J 2023; 37:e22972. [PMID: 37302013 PMCID: PMC10405295 DOI: 10.1096/fj.202300003r] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 03/24/2023] [Accepted: 05/01/2023] [Indexed: 06/12/2023]
Abstract
Docosahexaenoic (DHA) and arachidonic acids (ARA) are omega-3 and omega-6 long-chain polyunsaturated fatty acids (LCPUFAs). These molecules constitute a substantial portion of phospholipids in plasma membranes. Therefore, both DHA and ARA are essential diet components. Once consumed, DHA and ARA can interact with a large variety of biomolecules, including proteins such as insulin and α-synuclein (α-Syn). Under pathological conditions known as injection amyloidosis and Parkinson's disease, these proteins aggregate forming amyloid oligomers and fibrils, toxic species that exert high cell toxicity. In this study, we investigate the role of DHA and ARA in the aggregation properties of α-Syn and insulin. We found that the presence of both DHA and ARA at the equimolar concentrations strongly accelerated aggregation rates of α-Syn and insulin. Furthermore, LCPUFAs substantially altered the secondary structure of protein aggregates, whereas no noticeable changes in the fibril morphology were observed. Nanoscale Infrared analysis of α-Syn and insulin fibrils grown in the presence of both DHA and ARA revealed the presence of LCPUFAs in these aggregates. We also found that such LCPUFAs-rich α-Syn and insulin fibrils exerted significantly greater toxicities compared to the aggregates grown in the LCPUFAs-free environment. These findings show that interactions between amyloid-associated proteins and LCPUFAs can be the underlying molecular cause of neurodegenerative diseases.
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Affiliation(s)
- Mikhail Matveyenka
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas, USA
| | - Kiryl Zhaliazka
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas, USA
| | - Dmitry Kurouski
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas, USA
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas, USA
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35
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Rikanati L, Shema H, Ben-Tzvi T, Gross E. Nanoimaging of Facet-Dependent Adsorption, Diffusion, and Reactivity of Surface Ligands on Au Nanocrystals. NANO LETTERS 2023. [PMID: 37327381 DOI: 10.1021/acs.nanolett.3c00250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Analysis of the influence of dissimilar facets on the adsorption, stability, mobility, and reactivity of surface ligands is essential for designing ligand-coated nanocrystals with optimal functionality. Herein, para-nitrothiophenol and nitronaphthalene were chemisorbed and physisorbed, respectively, on Au nanocrystals, and the influence of different facets within a single Au nanocrystal on ligands properties were identified by IR nanospectroscopy measurements. Preferred adsorption was probed on (001) facets for both ligands, with a lower density on (111) facets. Exposure to reducing conditions led to nitro reduction and diffusion of both ligands toward the top (111) facet. Nitrothiophenol was characterized with a diffusivity higher than that of nitronaphthalene. Moreover, the strong thiol-Au interaction led to the diffusion of Au atoms and the formation of thiol-coated Au nanoparticles on the silicon surface. It is identified that the adsorption and reactivity of surface ligands were mainly influenced by the atomic properties of each facet, while diffusion was controlled by ligand-metal interactions.
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Affiliation(s)
- Lihi Rikanati
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University, Jerusalem 91904, Israel
| | - Hadar Shema
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University, Jerusalem 91904, Israel
| | - Tzipora Ben-Tzvi
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University, Jerusalem 91904, Israel
| | - Elad Gross
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University, Jerusalem 91904, Israel
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36
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Zhaliazka K, Matveyenka M, Kurouski D. Lipids uniquely alter the secondary structure and toxicity of amyloid beta 1-42 aggregates. FEBS J 2023; 290:3203-3220. [PMID: 36705524 PMCID: PMC10389563 DOI: 10.1111/febs.16738] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/25/2022] [Accepted: 01/25/2023] [Indexed: 01/28/2023]
Abstract
Abrupt aggregation of amyloid β1-42 (Aβ) peptide is a hallmark of Alzheimer's disease (AD), a severe pathology that affects more than 44 million people worldwide. A growing body of evidence suggests that lipids can uniquely alter rates of Aβ1-42 aggregation. However, it remains unclear whether lipids only alter rates of protein aggregation or also uniquely modify the secondary structure and toxicity of Aβ1-42 oligomers and fibrils. In this study, we investigated the effect of phosphatidylcholine (PC), cardiolipin (CL), and cholesterol (Chol) on Aβ1-42 aggregation. We found that PC, CL and Chol strongly accelerated the rate of fibril formation compared to the rate of Aβ1-42 aggregation in the lipid-free environment. Furthermore, anionic CL enabled the strongest acceleration of Aβ1-42 aggregation compared to zwitterionic PC and uncharged Chol. We also found that PC, CL and Chol uniquely altered the secondary structure of early-, middle- and late-stage Aβ1-42 aggregates. Specifically, CL and Chol drastically increased the amount of parallel β-sheet in Aβ1-42 oligomers and fibrils grown in the presence of these lipids. This caused a significant increase in the toxicity of Aβ : CL and Aβ : Chol compared to the toxicity of Aβ : PC and Aβ1-42 aggregates formed in the lipid-free environment. These results demonstrate that toxicity of Aβ aggregates correlates with the amount of their β-sheet content, which, in turn, is determined by the chemical structure of lipids present at the stage of Aβ1-42 aggregation.
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Affiliation(s)
- Kiryl Zhaliazka
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas 77843, United States
| | - Mikhail Matveyenka
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas 77843, United States
| | - Dmitry Kurouski
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas 77843, United States
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas, 77843, United States
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37
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Putera KH, Kim J, Baek SY, Schlecht SH, Beaulieu ML, Haritos V, Arruda EM, Ashton-Miller JA, Wojtys EM, Banaszak Holl MM. Fatigue-driven compliance increase and collagen unravelling in mechanically tested anterior cruciate ligament. Commun Biol 2023; 6:564. [PMID: 37237052 DOI: 10.1038/s42003-023-04948-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 05/17/2023] [Indexed: 05/28/2023] Open
Abstract
Approximately 300,000 anterior cruciate ligament (ACL) tears occur annually in the United States, half of which lead to the onset of knee osteoarthritis within 10 years of injury. Repetitive loading is known to result in fatigue damage of both ligament and tendon in the form of collagen unravelling, which can lead to structural failure. However, the relationship between tissue's structural, compositional, and mechanical changes are poorly understood. Herein we show that repetitive submaximal loading of cadaver knees causes an increase in co-localised induction of collagen unravelling and tissue compliance, especially in regions of greater mineralisation at the ACL femoral enthesis. Upon 100 cycles of 4× bodyweight knee loading, the ACL exhibited greater unravelled collagen in highly mineralized regions across varying levels of stiffness domains as compared to unloaded controls. A decrease in the total area of the most rigid domain, and an increase in the total area of the most compliant domain was also found. The results highlight fatigue-driven changes in both protein structure and mechanics in the more mineralized regions of the ACL enthesis, a known site of clinical ACL failure. The results provide a starting point for designing studies to limit ligament overuse injury.
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Affiliation(s)
- Kevin H Putera
- Department of Chemical and Biological Engineering, Monash University, Clayton, VIC, 3800, Australia
| | - Jinhee Kim
- Department of Chemical and Biological Engineering, Monash University, Clayton, VIC, 3800, Australia
- Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA
| | - So Young Baek
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Stephen H Schlecht
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Mélanie L Beaulieu
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Victoria Haritos
- Department of Chemical and Biological Engineering, Monash University, Clayton, VIC, 3800, Australia
| | - Ellen M Arruda
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
- Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, MI, 48109, USA
| | - James A Ashton-Miller
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Edward M Wojtys
- Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Mark M Banaszak Holl
- Department of Chemical and Biological Engineering, Monash University, Clayton, VIC, 3800, Australia.
- Department of Mechanical and Materials Engineering, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
- Department of Orthopaedic Surgery, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
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38
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Petit T, Lounasvuori M, Chemin A, Bärmann P. Nanointerfaces: Concepts and Strategies for Optical and X-ray Spectroscopic Characterization. ACS PHYSICAL CHEMISTRY AU 2023; 3:263-278. [PMID: 37249937 PMCID: PMC10214513 DOI: 10.1021/acsphyschemau.2c00058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 01/25/2023] [Accepted: 01/25/2023] [Indexed: 05/31/2023]
Abstract
Interfaces at the nanoscale, also called nanointerfaces, play a fundamental role in physics and chemistry. Probing the chemical and electronic environment at nanointerfaces is essential in order to elucidate chemical processes relevant for applications in a variety of fields. Many spectroscopic techniques have been applied for this purpose, although some approaches are more appropriate than others depending on the type of the nanointerface and the physical properties of the different phases. In this Perspective, we introduce the major concepts to be considered when characterizing nanointerfaces. In particular, the interplay between the characteristic length of the nanointerfaces, and the probing and information depths of different spectroscopy techniques is discussed. Differences between nano- and bulk interfaces are explained and illustrated with chosen examples from optical and X-ray spectroscopies, focusing on solid-liquid nanointerfaces. We hope that this Perspective will help to prepare spectroscopic characterization of nanointerfaces and stimulate interest in the development of new spectroscopic techniques adapted to the nanointerfaces.
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39
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Zou J, Liang G, Zhang F, Zhang S, Davey K, Guo Z. Revisiting the Role of Discharge Products in Li-CO 2 Batteries. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2210671. [PMID: 37171977 DOI: 10.1002/adma.202210671] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 04/27/2023] [Indexed: 05/14/2023]
Abstract
Rechargeable lithium-carbon dioxide (Li-CO2 ) batteries are promising devices for CO2 recycling and energy storage. However, thermodynamically stable and electrically insulating discharge products (DPs) (e.g., Li2 CO3 ) deposited at cathodes require rigorous conditions for completed decomposition, resulting in large recharge polarization and poor battery reversibility. Although progress has been achieved in cathode design and electrolyte optimization, the significance of DPs is generally underestimated. Therefore, it is necessary to revisit the role of DPs in Li-CO2 batteries to boost overall battery performance. Here, a critical and systematic review of DPs in Li-CO2 batteries is reported for the first time. Fundamentals of reactions for formation and decomposition of DPs are appraised; impacts on battery performance including overpotential, capacity, and stability are demonstrated; and the necessity of discharge product management is highlighted. Practical in situ/operando technologies are assessed to characterize reaction intermediates and the corresponding DPs for mechanism investigation. Additionally, achievable control measures to boost the decomposition of DPs are evidenced to provide battery design principles and improve the battery performance. Findings from this work will deepen the understanding of electrochemistry of Li-CO2 batteries and promote practical applications.
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Affiliation(s)
- Jinshuo Zou
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Gemeng Liang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Fangli Zhang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, 5005, Australia
- Institute for Superconducting & Electronic Materials, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Shilin Zhang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Kenneth Davey
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Zaiping Guo
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, 5005, Australia
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40
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Meng ZD, Tian ZQ, Yi J. Rapid theoretical method for inverse design on a tip-enhanced Raman spectroscopy (TERS) probe. OPTICS EXPRESS 2023; 31:15474-15483. [PMID: 37157648 DOI: 10.1364/oe.488322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Tip-enhanced Raman spectroscopy (TERS) can provide correlated topographic and chemical information at the nanoscale, with great sensitivity and spatial resolution depending on the configuration of the TERS probe. The sensitivity of the TERS probe is largely determined by two effects: the lightning-rod effect and local surface plasmon resonance (LSPR). While 3D numerical simulations have traditionally been used to optimize the TERS probe structure by sweeping two or more parameters, this method is extremely resource-intensive, with computation times growing exponentially as the number of parameters increases. In this work, we propose an alternative rapid theoretical method that reduces computational loading while still achieving effective TERS probe optimization through the inverse design method. By applying this method to optimize a TERS probe with four free-structural parameters, we observed a nearly 1 order of magnitude improvement in enhancement factor (|E/E0|2), in contrast to a parameter sweeping 3D simulation that would take ∼7000 hours of computation. Our method, therefore, shows great promise as a useful tool for designing not only TERS probes but also other near-field optical probes and optical antennas.
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41
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Patil S, Lomonosov V, Ringe E, Kurouski D. Tip-Enhanced Raman Imaging of Plasmon-Driven Coupling of 4-Nitrobenzenethiol on Au-Decorated Magnesium Nanostructures. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:7702-7706. [PMID: 37483685 PMCID: PMC10359025 DOI: 10.1021/acs.jpcc.3c01345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/31/2023] [Indexed: 07/25/2023]
Abstract
Magnesium nanoparticles (MgNPs) exhibit localized surface plasmon resonances across the ultraviolet, visible, and near-infrared parts of electromagnetic spectrum and are attracting increasing interest due to their sustainability and biocompatibility. In this study, we used tip-enhanced Raman spectroscopy (TERS) to examine the photocatalytic properties of MgNP protected by a thin native oxide layer and their Au-modified bimetallic analogs produced by partial galvanic replacement, Au-MgNPs. We found no reduction of 4-nitrobenzenethiol (4-NBT) to p,p'-dimercaptoazobisbenzene (DMAB) when a Au-coated tip was placed in contact with a self-assembled monolayer of 4-NBT molecules adsorbed on MgNPs alone. However, decorating Mg with Au made these bimetallic structures catalytically active. The DMAB signal signature of photocatalytic activity was more delocalized around AuNPs attached to Mg than around AuNPs on a Si substrate, indicating coupling between the Mg core and Au decorations. This report on photocatalytic activity of a bimetallic structure including plasmonic Mg paves the way for further catalyst architectures benefiting from Mg's versatility and abundance.
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Affiliation(s)
- Swati
J. Patil
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Vladimir Lomonosov
- Department
of Materials Science and Metallurgy, University
of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom
- Department
of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, United Kingdom
| | - Emilie Ringe
- Department
of Materials Science and Metallurgy, University
of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom
- Department
of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, United Kingdom
| | - Dmitry Kurouski
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
- The
Institute for Quantum Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
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42
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Mrđenović D, Tang ZX, Pandey Y, Su W, Zhang Y, Kumar N, Zenobi R. Regioselective Tip-Enhanced Raman Spectroscopy of Lipid Membranes with Sub-Nanometer Axial Resolution. NANO LETTERS 2023; 23:3939-3946. [PMID: 37096805 DOI: 10.1021/acs.nanolett.3c00689] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Noninvasive and label-free analysis of cell membranes at the nanoscale is essential to comprehend vital cellular processes. However, conventional analytical tools generally fail to meet this challenge due to the lack of required sensitivity and/or spatial resolution. Herein, we demonstrate that tip-enhanced Raman spectroscopy (TERS) is a powerful nanoanalytical tool to analyze dipalmitoylphosphatidylcholine (DPPC) bilayers and human cell membranes with submolecular resolution in the vertical direction. Unlike the far-field Raman measurements, TERS spectra of the DPPC bilayers reproducibly exhibited a uniquely shaped C-H band. These unique spectral features were also reproducibly observed in the TERS spectrum of human pancreatic cancer cells. Spectral deconvolution and DFT simulations confirmed that the TERS signal primarily originated from vibrations of the CH3 groups in the choline headgroup of the lipids. The reproducible TERS results obtained in this study unequivocally demonstrate the ultrahigh sensitivity of TERS for nanoanalysis of lipid membranes under ambient conditions.
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Affiliation(s)
- Dušan Mrđenović
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland
| | - Zi-Xi Tang
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, 96 Jinzhai Road, 230026 Hefei, Anhui, People's Republic of China
| | - Yashashwa Pandey
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland
| | - Weitao Su
- School of Sciences, Hangzhou Dianzi University, 310018 Hangzhou, People's Republic of China
| | - Yao Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, 96 Jinzhai Road, 230026 Hefei, Anhui, People's Republic of China
| | - Naresh Kumar
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland
| | - Renato Zenobi
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland
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43
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Wang H, Lee D, Wei L. Toward the Next Frontiers of Vibrational Bioimaging. CHEMICAL & BIOMEDICAL IMAGING 2023; 1:3-17. [PMID: 37122829 PMCID: PMC10131268 DOI: 10.1021/cbmi.3c00004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 03/03/2023] [Accepted: 03/10/2023] [Indexed: 05/02/2023]
Abstract
Chemical imaging based on vibrational contrasts can extract molecular information entangled in complex biological systems. To this end, nonlinear Raman scattering microscopy, mid-infrared photothermal (MIP) microscopy, and atomic force microscopy (AFM)-based force-detected photothermal microscopies are emerging with better chemical sensitivity, molecular specificity, and spatial resolution than conventional vibrational methods. Their utilization in bioimaging applications has provided biological knowledge in unprecedented detail. This Perspective outlines key methodological developments, bioimaging applications, and recent technical innovations of the three techniques. Representative biological demonstrations are also highlighted to exemplify the unique advantages of obtaining vibrational contrasts. With years of effort, these three methods compose an expanding vibrational bioimaging toolbox to tackle specific bioimaging needs, benefiting many biological investigations with rich information in both label-free and labeling manners. Each technique will be discussed and compared in the outlook, leading to possible future directions to accommodate growing needs in vibrational bioimaging.
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Affiliation(s)
- Haomin Wang
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - Dongkwan Lee
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - Lu Wei
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
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44
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Liu Q, Fu Y, Qin Z, Wang Y, Zhang S, Ran M. Progress in the applications of atomic force microscope (AFM) for mineralogical research. Micron 2023; 170:103460. [PMID: 37099977 DOI: 10.1016/j.micron.2023.103460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/12/2023] [Accepted: 04/12/2023] [Indexed: 04/28/2023]
Abstract
Mineral surface properties and mineral-aqueous interfacial reactions are essential factors affecting the geochemical cycle, related environmental impacts, and bioavailability of chemical elements. Compared to macroscopic analytical instruments, an atomic force microscope (AFM) provides necessary and vital information for analyzing mineral structure, especially the mineral-aqueous interfaces, and has excellent application prospects in mineralogical research. This paper presents recent advances in the study of properties of minerals such as surface roughness, crystal structure and adhesion by atomic force microscopy, as well as the progress of application and main contributions in mineral-aqueous interfaces analysis, such as mineral dissolution, redox and adsorption processes. It describes the principles, range of applications, strengths and weaknesses of using AFM in combination with IR and Raman spectroscopy instruments to characterization of minerals. Finally, according to the limitations of the AFM structure and function, this research proposes some ideas and suggestions for developing and designing AFM techniques.
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Affiliation(s)
- Qin Liu
- School of Geography & Environmental Science, Guizhou Normal University, Guiyang, Guizhou 550025, China
| | - Yuhong Fu
- School of Geography & Environmental Science, Guizhou Normal University, Guiyang, Guizhou 550025, China.
| | - Zonghua Qin
- State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, Guizhou 550081, China
| | - Yun Wang
- School of Geography & Environmental Science, Guizhou Normal University, Guiyang, Guizhou 550025, China
| | - Shanshan Zhang
- School of Geography & Environmental Science, Guizhou Normal University, Guiyang, Guizhou 550025, China
| | - Meimei Ran
- School of Geography & Environmental Science, Guizhou Normal University, Guiyang, Guizhou 550025, China
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45
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Dery S, Friedman B, Shema H, Gross E. Mechanistic Insights Gained by High Spatial Resolution Reactivity Mapping of Homogeneous and Heterogeneous (Electro)Catalysts. Chem Rev 2023; 123:6003-6038. [PMID: 37037476 PMCID: PMC10176474 DOI: 10.1021/acs.chemrev.2c00867] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
Abstract
The recent development of high spatial resolution microscopy and spectroscopy tools enabled reactivity analysis of homogeneous and heterogeneous (electro)catalysts at previously unattainable resolution and sensitivity. These techniques revealed that catalytic entities are more heterogeneous than expected and local variations in reaction mechanism due to divergences in the nature of active sites, such as their atomic properties, distribution, and accessibility, occur both in homogeneous and heterogeneous (electro)catalysts. In this review, we highlight recent insights in catalysis research that were attained by conducting high spatial resolution studies. The discussed case studies range from reactivity detection of single particles or single molecular catalysts, inter- and intraparticle communication analysis, and probing the influence of catalysts distribution and accessibility on the resulting reactivity. It is demonstrated that multiparticle and multisite reactivity analyses provide unique knowledge about reaction mechanism that could not have been attained by conducting ensemble-based, averaging, spectroscopy measurements. It is highlighted that the integration of spectroscopy and microscopy measurements under realistic reaction conditions will be essential to bridge the gap between model-system studies and real-world high spatial resolution reactivity analysis.
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Affiliation(s)
- Shahar Dery
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University, Jerusalem 91904, Israel
| | - Barak Friedman
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University, Jerusalem 91904, Israel
| | - Hadar Shema
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University, Jerusalem 91904, Israel
| | - Elad Gross
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University, Jerusalem 91904, Israel
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46
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Matveyenka M, Rizevsky S, Kurouski D. Elucidation of the Effect of Phospholipid Charge on the Rate of Insulin Aggregation and Structure and Toxicity of Amyloid Fibrils. ACS OMEGA 2023; 8:12379-12386. [PMID: 37033844 PMCID: PMC10077570 DOI: 10.1021/acsomega.3c00159] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/14/2023] [Indexed: 06/19/2023]
Abstract
The plasma membrane is a dynamic structure that separates the cell interior from the extracellular space. The fluidity and plasticity of the membrane determines a large number of physiologically important processes ranging from cell division to signal transduction. In turn, membrane fluidity is determined by phospholipids that possess different charges, lengths, and saturation states of fatty acids. A growing body of evidence suggests that phospholipids may play an important role in the aggregation of misfolded proteins, which causes pathological conditions that lead to severe neurodegenerative diseases. In this study, we investigate the role of the charge of the most abundant phospholipids in the plasma membrane: phosphatidylcholine and phosphatidylethanolamine, zwitterions: phosphatidylserine and phosphatidylglycerol, lipids that possess a negative charge, and cardiolipin that has double negative charge on its polar head. Our results show that both zwitterions strongly inhibit insulin aggregation, whereas negatively charged lipids accelerate fibril formation. We also found that in the equimolar presence of zwitterions insulin yields oligomers that exert significantly lower cell toxicity compared to fibrils that were grown in the lipid-free environment. Such aggregates were not formed in the presence of negatively charged lipids. Instead, long insulin fibrils that had strong cell toxicity were grown in the presence of such negatively charged lipids. However, our results showed no correlation between the charge of the lipid and secondary structure and toxicity of the aggregates formed in its presence. These findings show that the secondary structure and toxicity are determined by the chemical structure of the lipid rather than by the charge of the phospholipid polar head.
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Affiliation(s)
- Mikhail Matveyenka
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Stanislav Rizevsky
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
- Department
of Biotechnology, Binh Duong University, Thu Dau Mot 820000, Vietnam
| | - Dmitry Kurouski
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
- Department
of Biomedical Engineering, Texas A&M
University, College
Station, Texas 77843, United States
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47
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Peydayesh M, Kistler S, Zhou J, Lutz-Bueno V, Victorelli FD, Meneguin AB, Spósito L, Bauab TM, Chorilli M, Mezzenga R. Amyloid-polysaccharide interfacial coacervates as therapeutic materials. Nat Commun 2023; 14:1848. [PMID: 37012278 PMCID: PMC10070338 DOI: 10.1038/s41467-023-37629-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 03/24/2023] [Indexed: 04/05/2023] Open
Abstract
Coacervation via liquid-liquid phase separation provides an excellent opportunity to address the challenges of designing nanostructured biomaterials with multiple functionalities. Protein-polysaccharide coacervates, in particular, offer an appealing strategy to target biomaterial scaffolds, but these systems suffer from the low mechanical and chemical stabilities of protein-based condensates. Here we overcome these limitations by transforming native proteins into amyloid fibrils and demonstrate that the coacervation of cationic protein amyloids and anionic linear polysaccharides results in the interfacial self-assembly of biomaterials with precise control of their structure and properties. The coacervates present a highly ordered asymmetric architecture with amyloid fibrils on one side and the polysaccharide on the other. We demonstrate the excellent performance of these coacervates for gastric ulcer protection by validating via an in vivo assay their therapeutic effect as engineered microparticles. These results point at amyloid-polysaccharides coacervates as an original and effective biomaterial for multiple uses in internal medicine.
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Affiliation(s)
- Mohammad Peydayesh
- ETH Zurich, Department of Health Sciences and Technology, 8092, Zurich, Switzerland
| | - Sabrina Kistler
- ETH Zurich, Department of Materials, 8093, Zurich, Switzerland
| | - Jiangtao Zhou
- ETH Zurich, Department of Health Sciences and Technology, 8092, Zurich, Switzerland
| | - Viviane Lutz-Bueno
- ETH Zurich, Department of Health Sciences and Technology, 8092, Zurich, Switzerland
- Paul Scherrer Institute PSI, 5232, Villigen, Switzerland
| | | | - Andréia Bagliotti Meneguin
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University, 14800-903, Araraquara, Sao Paulo, Brazil
| | - Larissa Spósito
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University, 14800-903, Araraquara, Sao Paulo, Brazil
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University, 14800-903, Araraquara, Sao Paulo, Brazil
| | - Tais Maria Bauab
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University, 14800-903, Araraquara, Sao Paulo, Brazil
| | - Marlus Chorilli
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University, 14800-903, Araraquara, Sao Paulo, Brazil
| | - Raffaele Mezzenga
- ETH Zurich, Department of Health Sciences and Technology, 8092, Zurich, Switzerland.
- ETH Zurich, Department of Materials, 8093, Zurich, Switzerland.
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48
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Alprol AE, Mansour AT, El-Beltagi HS, Ashour M. Algal Extracts for Green Synthesis of Zinc Oxide Nanoparticles: Promising Approach for Algae Bioremediation. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16072819. [PMID: 37049112 PMCID: PMC10096179 DOI: 10.3390/ma16072819] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 03/24/2023] [Accepted: 03/30/2023] [Indexed: 05/31/2023]
Abstract
Zinc oxide nanoparticles (ZnO-NPs) possess unique properties, making them a popular material across various industries. However, traditional methods of synthesizing ZnO-NPs are associated with environmental and health risks due to the use of harmful chemicals. As a result, the development of eco-friendly manufacturing practices, such as green-synthesis methodologies, has gained momentum. Green synthesis of ZnO-NPs using biological substrates offers several advantages over conventional approaches, such as cost-effectiveness, simplicity of scaling up, and reduced environmental impact. While both dried dead and living biomasses can be used for synthesis, the extracellular mode is more commonly employed. Although several biological substrates have been successfully utilized for the green production of ZnO-NPs, large-scale production remains challenging due to the complexity of biological extracts. In addition, ZnO-NPs have significant potential for photocatalysis and adsorption in the remediation of industrial effluents. The ease of use, efficacy, quick oxidation, cost-effectiveness, and reduced synthesis of harmful byproducts make them a promising tool in this field. This review aims to describe the different biological substrate sources and technologies used in the green synthesis of ZnO-NPs and their impact on properties. Traditional synthesis methods using harmful chemicals limit their clinical field of use. However, the emergence of algae as a promising substrate for creating safe, biocompatible, non-toxic, economic, and ecological synthesis techniques is gaining momentum. Future research is required to explore the potential of other algae species for biogenic synthesis. Moreover, this review focuses on how green synthesis of ZnO-NPs using biological substrates offers a viable alternative to traditional methods. Moreover, the use of these nanoparticles for industrial-effluent remediation is a promising field for future research.
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Affiliation(s)
- Ahmed E. Alprol
- National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt
| | - Abdallah Tageldein Mansour
- Animal and Fish Production Department, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 420, Al Hofuf 31982, Saudi Arabia
- Fish and Animal Production Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria 21531, Egypt
| | - Hossam S. El-Beltagi
- Agricultural Biotechnology Department, College of Agriculture and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia
- Biochemistry Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
| | - Mohamed Ashour
- National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt
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49
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Zhaliazka K, Kurouski D. Nanoscale imaging of individual amyloid aggregates extracted from brains of Alzheimer and Parkinson patients reveals presence of lipids in α-synuclein but not in amyloid β 1-42 fibrils. Protein Sci 2023; 32:e4598. [PMID: 36823759 PMCID: PMC10019452 DOI: 10.1002/pro.4598] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 02/02/2023] [Accepted: 02/15/2023] [Indexed: 02/25/2023]
Abstract
Abrupt aggregation of misfolded proteins is the underlying molecular cause of Alzheimer disease (AD) and Parkinson disease (PD). Both AD and PD are severe pathologies that affect millions of people around the world. A small 42 amino acid long peptide, known as amyloid β (Aβ), aggregates in the frontal cortex of AD patients forming oligomers and fibrils, highly toxic protein aggregates that cause progressive neuron death. Similar aggregates of α-synuclein (α-Syn), a small protein that facilitates neurotransmitter release, are observed in the midbrain, hypothalamus, and thalamus of people with PD. In this study, we utilized the innovative nano-Infrared imaging technique to investigate the structural organization of individual Aβ and α-syn fibrils postmortem extracted from brains of AD and PD patients, respectively. We observed two morphologically different Aβ and α-Syn fibril polymorphs in each patient's brain. One had twisted topology, whereas another exhibited flat tape-like morphology. We found that both polymorphs shared the same parallel β-sheet-dominated secondary structure. These findings suggested that both fibril polymorphs were built from structurally similar if not identical filaments that coiled forming twisted fibrils or associated side-by-side in the case of straight Aβ and α-Syn fibrils. Nano-Infrared analysis of individual protein aggregates also revealed the presence of lipids in the structure of both twisted and tape-like α-Syn fibrils that were not observed in any of the Aβ fibril polymorphs. These findings demonstrate that lipid membranes can play a critically important role in the onset and progression of PD.
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Affiliation(s)
- Kiryl Zhaliazka
- Department of Biochemistry and BiophysicsTexas A&M UniversityCollege StationTexasUSA
| | - Dmitry Kurouski
- Department of Biochemistry and BiophysicsTexas A&M UniversityCollege StationTexasUSA
- Department of Biomedical EngineeringTexas A&M UniversityCollege StationTexasUSA
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50
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Wang M, Perez-Morelo DJ, Ramer G, Pavlidis G, Schwartz JJ, Yu L, Ilic R, Centrone A, Aksyuk VA. Beating thermal noise in a dynamic signal measurement by a nanofabricated cavity optomechanical sensor. SCIENCE ADVANCES 2023; 9:eadf7595. [PMID: 36921059 PMCID: PMC10017032 DOI: 10.1126/sciadv.adf7595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
Thermal fluctuations often impose both fundamental and practical measurement limits on high-performance sensors, motivating the development of techniques that bypass the limitations imposed by thermal noise outside cryogenic environments. Here, we theoretically propose and experimentally demonstrate a measurement method that reduces the effective transducer temperature and improves the measurement precision of a dynamic impulse response signal. Thermal noise-limited, integrated cavity optomechanical atomic force microscopy probes are used in a photothermal-induced resonance measurement to demonstrate an effective temperature reduction by a factor of ≈25, i.e., from room temperature down as low as ≈12 K, without cryogens. The method improves the experimental measurement precision and throughput by >2×, approaching the theoretical limit of ≈3.5× improvement for our experimental conditions. The general applicability of this method to dynamic measurements leveraging thermal noise-limited harmonic transducers will have a broad impact across a variety of measurement platforms and scientific fields.
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Affiliation(s)
- Mingkang Wang
- Microsystems and Nanotechnology Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
- Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742, USA
| | - Diego J. Perez-Morelo
- Microsystems and Nanotechnology Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
- Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742, USA
| | - Georg Ramer
- Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742, USA
- Nanoscale Devices Characterization Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
- Institute of Chemical Technologies and Analytics, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
| | - Georges Pavlidis
- Nanoscale Devices Characterization Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | - Jeffrey J. Schwartz
- Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742, USA
- Nanoscale Devices Characterization Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | - Liya Yu
- Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | - Robert Ilic
- Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | - Andrea Centrone
- Nanoscale Devices Characterization Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | - Vladimir A. Aksyuk
- Microsystems and Nanotechnology Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
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