51
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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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52
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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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53
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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: 15] [Impact Index Per Article: 15.0] [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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54
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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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55
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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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56
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Itoh T, Procházka M, Dong ZC, Ji W, Yamamoto YS, Zhang Y, Ozaki Y. Toward a New Era of SERS and TERS at the Nanometer Scale: From Fundamentals to Innovative Applications. Chem Rev 2023; 123:1552-1634. [PMID: 36745738 PMCID: PMC9952515 DOI: 10.1021/acs.chemrev.2c00316] [Citation(s) in RCA: 80] [Impact Index Per Article: 80.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Indexed: 02/08/2023]
Abstract
Surface-enhanced Raman scattering (SERS) and tip-enhanced Raman scattering (TERS) have opened a variety of exciting research fields. However, although a vast number of applications have been proposed since the two techniques were first reported, none has been applied to real practical use. This calls for an update in the recent fundamental and application studies of SERS and TERS. Thus, the goals and scope of this review are to report new directions and perspectives of SERS and TERS, mainly from the viewpoint of combining their mechanism and application studies. Regarding the recent progress in SERS and TERS, this review discusses four main topics: (1) nanometer to subnanometer plasmonic hotspots for SERS; (2) Ångström resolved TERS; (3) chemical mechanisms, i.e., charge-transfer mechanism of SERS and semiconductor-enhanced Raman scattering; and (4) the creation of a strong bridge between the mechanism studies and applications.
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Affiliation(s)
- Tamitake Itoh
- Health
and Medical Research Institute, National
Institute of Advanced Industrial Science and Technology (AIST), 2217-14 Hayashi-cho, Takamatsu, 761-0395Kagawa, Japan
| | - Marek Procházka
- Faculty
of Mathematics and Physics, Institute of Physics, Charles University, Ke Karlovu 5, 121 16Prague 2, Czech Republic
| | - Zhen-Chao Dong
- Hefei
National Research Center for Physical Sciences at the Microscale, University of Science and Technique of China, Hefei230026, China
| | - Wei Ji
- College
of Chemistry, Chemical Engineering, and Resource Utilization, Northeast Forestry University, Harbin145040, China
| | - Yuko S. Yamamoto
- School
of Materials Science, Japan Advanced Institute
of Science and Technology (JAIST), Nomi, 923-1292Ishikawa, Japan
| | - Yao Zhang
- Hefei
National Research Center for Physical Sciences at the Microscale, University of Science and Technique of China, Hefei230026, China
| | - Yukihiro Ozaki
- School of
Biological and Environmental Sciences, Kwansei
Gakuin University, 2-1,
Gakuen, Sanda, 669-1330Hyogo, Japan
- Toyota
Physical and Chemical Research Institute, Nagakute, 480-1192Aichi, Japan
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57
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Mrđenović D, Cai ZF, Pandey Y, Bartolomeo GL, Zenobi R, Kumar N. Nanoscale chemical analysis of 2D molecular materials using tip-enhanced Raman spectroscopy. NANOSCALE 2023; 15:963-974. [PMID: 36541047 PMCID: PMC9851175 DOI: 10.1039/d2nr05127c] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 12/01/2022] [Indexed: 05/10/2023]
Abstract
Two-dimensional (2D) molecular materials have attracted immense attention due to their unique properties, promising a wide range of exciting applications. To understand the structure-property relationship of these low-dimensional materials, sensitive analytical tools capable of providing structural and chemical characterisation at the nanoscale are required. However, most conventional analytical techniques fail to meet this challenge, especially in a label-free and non-destructive manner under ambient conditions. In the last two decades, tip-enhanced Raman spectroscopy (TERS) has emerged as a powerful analytical technique for nanoscale chemical characterisation by combining the high spatial resolution of scanning probe microscopy and the chemical sensitivity and specificity of surface-enhanced Raman spectroscopy. In this review article, we provide an overview of the application of TERS for nanoscale chemical analysis of 2D molecular materials, including 2D polymers, biomimetic lipid membranes, biological cell membranes, and 2D reactive systems. The progress in the structural and chemical characterisation of these 2D materials is demonstrated with key examples from our as well as other laboratories. We highlight the unique information that TERS can provide as well as point out the common pitfalls in experimental work and data interpretation and the possible ways of averting them.
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Affiliation(s)
- Dušan Mrđenović
- Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland.
| | - Zhen-Feng Cai
- Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland.
| | - Yashashwa Pandey
- Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland.
| | | | - Renato Zenobi
- Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland.
| | - Naresh Kumar
- Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland.
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58
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Waeytens J, De Meutter J, Goormaghtigh E, Dazzi A, Raussens V. Determination of Secondary Structure of Proteins by Nanoinfrared Spectroscopy. Anal Chem 2023; 95:621-627. [PMID: 36598929 PMCID: PMC9851152 DOI: 10.1021/acs.analchem.2c01431] [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: 04/01/2022] [Accepted: 10/21/2022] [Indexed: 01/05/2023]
Abstract
Nanoscale infrared spectroscopy (AFMIR) is becoming an important tool for the analysis of biological sample, in particular protein assemblies, at the nanoscale level. While the amide I band is usually used to determine the secondary structure of proteins in Fourier transform infrared spectroscopy, no tool has been developed so far for AFMIR. The paper introduces a method for the study of secondary structure of protein based on a protein library of 38 well-characterized proteins. Ascending stepwise linear regression (ASLR) and partial least square (PLS) regression were used to correlate spectrum characteristic bands with the major secondary structures (α-helixes and β-sheets). ASLR appears to provide better results than PLS. The secondary structure predictions are characterized by a root mean square standard error in a cross validation of 6.39% for α-helixes and 6.23% for β-sheets.
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Affiliation(s)
- Jehan Waeytens
- Center
for Structural Biology and Bioinformatics, Laboratory for the Structure
and Function of Biological Membranes, Université
libre de Bruxelles, 1050Brussels, Belgium
- Institut
de Chimie Physique d’Orsay, CNRS
UMR8000, Université Paris-Saclay, 91400Orsay, France
| | - Joëlle De Meutter
- Center
for Structural Biology and Bioinformatics, Laboratory for the Structure
and Function of Biological Membranes, Université
libre de Bruxelles, 1050Brussels, Belgium
| | - Erik Goormaghtigh
- Center
for Structural Biology and Bioinformatics, Laboratory for the Structure
and Function of Biological Membranes, Université
libre de Bruxelles, 1050Brussels, Belgium
| | - Alexandre Dazzi
- Institut
de Chimie Physique d’Orsay, CNRS
UMR8000, Université Paris-Saclay, 91400Orsay, France
| | - Vincent Raussens
- Center
for Structural Biology and Bioinformatics, Laboratory for the Structure
and Function of Biological Membranes, Université
libre de Bruxelles, 1050Brussels, Belgium
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59
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Xie L, Gong K, Liu Y, Zhang L. Strategies and Challenges of Identifying Nanoplastics in Environment by Surface-Enhanced Raman Spectroscopy. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:25-43. [PMID: 36576086 DOI: 10.1021/acs.est.2c07416] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Nanoplastics (<1000 nm) have been evidenced to be universal in a variety of environmental media. They pose a potential cytotoxicity and health risk due to their tiny size, which allows them to easily penetrate biological barriers and enter cells. Here, we briefly review the various prevalent analytical techniques or tools for identifying nanoplastics, and further move to focus on their advantages and disadvantages. Surface-enhanced Raman spectroscopy (SERS) has been implemented for the identification of individual nanoparticles because of its high sensitivity to molecules and ease of rapid characterization. Therefore, we introduce the SERS technique in the following aspects, (1) principles of SERS; (2) strategies and advances in SERS detection of nanoplastics; and (3) applying SERS to real environmental samples. We put our effort into the summarization of efficient SERS substrates that essentially enable the better detection of nanoplastics, and extend to discuss how the reported nanoplastics pretreatment methodologies can bring SERS analysis to practical applications. A further step moving forward is to investigate the problems and challenges of currently applied SERS detection methods and to look at future research needs in nanoplastics detection employing SERS analysis.
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Affiliation(s)
- Lifang Xie
- Department of Environmental Science & Engineering, Fudan University, Shanghai200433, Peoples' Republic of China
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Fudan University, Shanghai200433, Peoples' Republic of China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai200092, Peoples' Republic of China
| | - Kedong Gong
- Department of Environmental Science & Engineering, Fudan University, Shanghai200433, Peoples' Republic of China
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Fudan University, Shanghai200433, Peoples' Republic of China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai200092, Peoples' Republic of China
| | - Yangyang Liu
- Department of Environmental Science & Engineering, Fudan University, Shanghai200433, Peoples' Republic of China
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Fudan University, Shanghai200433, Peoples' Republic of China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai200092, Peoples' Republic of China
| | - Liwu Zhang
- Department of Environmental Science & Engineering, Fudan University, Shanghai200433, Peoples' Republic of China
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Fudan University, Shanghai200433, Peoples' Republic of China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai200092, Peoples' Republic of China
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60
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Zhang J, Khanal D, Banaszak Holl MM. Applications of AFM-IR for drug delivery vector characterization: infrared, thermal, and mechanical characterization at the nanoscale. Adv Drug Deliv Rev 2023; 192:114646. [PMID: 36521685 DOI: 10.1016/j.addr.2022.114646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 11/15/2022] [Accepted: 12/04/2022] [Indexed: 12/15/2022]
Abstract
The development of effective drug delivery systems requires in-depth characterization of the micro- or nanostructure of the material vectors with high spatial resolution, resulting in a deep understanding of the design-function relationship and maximum therapeutic efficacy. Atomic force microscopy-infrared spectroscopy (AFM-IR) combines the high spatial resolution of AFM and the capabilities of IR spectroscopy to identify chemical composition and it has emerged as a powerful tool for the detailed characterization of a drug delivery system at the nanoscale. In addition, the instruments also allow thermal and mechanical evaluation at the nanoscale. In this review, we highlight the applications of AFM-IR in various drug delivery systems, including polymer-based carriers, lipid-contained nanocarriers, and metal-based nanocarriers. The existing challenges as well as the future perspectives for the application of AFM-IR for drug delivery vector characterization are also discussed.
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Affiliation(s)
- Jing Zhang
- Department of Chemical & Biological Engineering, Monash University, Clayton, Victoria 3800, Australia.
| | - Dipesh Khanal
- Advanced Drug Delivery Group, School of Pharmacy, Faculty of Medicine and Health, The University of Sydney, NSW 2006, Australia; The University of Sydney, Sydney Nano Institute, Sydney, New South Wales 2006, Australia.
| | - Mark M Banaszak Holl
- Department of Chemical & Biological Engineering, Monash University, Clayton, Victoria 3800, Australia; Department of Mechanial and Materials Engineering, School of Engineering University of Alabama at Birmingham, Birmingham, AL 35294 USA; Division of Pulmonology, Allergy, and Critical Care Medicine, Heersink Medical School, University of Alabama at Birmingham, Birmingham, AL 35294 USA.
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61
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Matveyenka M, Rizevsky S, Pellois JP, Kurouski D. Lipids uniquely alter rates of insulin aggregation and lower toxicity of amyloid aggregates. Biochim Biophys Acta Mol Cell Biol Lipids 2023; 1868:159247. [PMID: 36272517 PMCID: PMC10401553 DOI: 10.1016/j.bbalip.2022.159247] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 09/14/2022] [Accepted: 10/02/2022] [Indexed: 02/25/2023]
Abstract
Amyloid formation is a hallmark of many medical diseases including diabetes type 2, Alzheimer's and Parkinson diseases. Under these pathological conditions, misfolded proteins self-assemble forming oligomers and fibrils, structurally heterogeneous aggregates that exhibit a large variety of shapes and forms. A growing body of evidence points to drastic changes in the lipid profile in organs affected by amyloidogenic diseases. In this study, we investigated the extent to which individual phospho- and sphingolipids, as well as their mixtures can impact insulin aggregation. Our results show that lipids and their mixtures uniquely alter rates of insulin aggregation simultaneously changing the secondary structure of protein aggregates that are grown in their presence. These structurally different protein-lipid aggregates impact cell viability to different extent while using distinct mechanisms of toxicity. These findings suggest that irreversible changes in lipid profiles of organs may trigger formation of toxic protein species that in turn are responsible for the onset and progression of amyloidogenic diseases.
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Affiliation(s)
- Mikhail Matveyenka
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Stanislav Rizevsky
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States; Department of Biotechnology, Binh Duong University, Thu Dau Mot 820000, Viet Nam
| | - Jean-Philippe Pellois
- 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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62
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Kokilathasan N, Dittrich M. Nanoplastics: Detection and impacts in aquatic environments - A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 849:157852. [PMID: 35944628 DOI: 10.1016/j.scitotenv.2022.157852] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 07/13/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
The rise in the global production of plastics has led to severe concerns about the impacts of plastics in aquatic environments. Although plastic materials degrade over extreme long periods, they can be broken down through physical, chemical, and/or biological processes to form microplastics (MPs), defined here as particles between 1 μm and 5 mm in size, and later to form nanoplastics (NPls), defined as particles <1 μm in size. We know little about the abundance and effects of NPls, even though a lot of research has been conducted on the ecotoxicological impacts of MPs on both aquatic biota. Nevertheless, there is evidence that NPls can both bypass the cell membranes of microorganisms and bioaccumulate in the tissues and organs of higher organisms. This review analyzes 150 publications collected by searching through the databases Web of Science, SCOPUS, and Google Scholar using keywords such as nanoplastics*, aquatic*, detection*, toxic*, biofilm*, formation*, and extracellular polymeric substance* as singular or plural combinations. We highlight and critically synthesize current studies on the formation and degradation of NPls, NPls' interactions with aquatic biota and biofilm communities, and methods of detection. One reason for the missing data and studies in this area of research is the lack of a protocol for the detection of, and suitable methods for the characterization of, NPls in the field. Our primary aim is to identify gaps in knowledge throughout the review and define future directions of research to address the impacts of NPls in aquatic environments. The development of consistent and standardized sets of procedures would address the gaps in knowledge regarding the formation and degradation of NPls as well as sampling and characterizing natural NPls needed to observe the full extent of NPls on aquatic biota and biofilm communities.
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Affiliation(s)
- Nigarsan Kokilathasan
- Biogeochemistry Group, Department of Physical and Environmental Sciences, University of Toronto Scarborough, 1065 Military Trail, Toronto, ON M1C1A4, Canada
| | - Maria Dittrich
- Biogeochemistry Group, Department of Physical and Environmental Sciences, University of Toronto Scarborough, 1065 Military Trail, Toronto, ON M1C1A4, Canada.
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63
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Jakob DS, Centrone A. Visible to Mid-IR Spectromicroscopy with Top-Down Illumination and Nanoscale (≈10 nm) Resolution. Anal Chem 2022; 94:15564-15569. [PMID: 36321942 PMCID: PMC9798386 DOI: 10.1021/acs.analchem.2c03685] [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] [Indexed: 11/06/2022]
Abstract
Photothermal induced resonance (PTIR), an atomic force microscopy (AFM) analogue of IR spectroscopy also known as AFM-IR, is capable of nanoscale lateral resolution and finds broad applications in biology and materials science. Here, the spectral range of a top-illumination PTIR setup operating in contact-mode is expanded for the first time to the visible and near-IR spectral ranges. The result is a tool that yields absorption spectra and maps of electronic and vibrational features with spatial resolution down to ≈10 nm. In addition to the improved resolution, the setup enables light-polarization-dependent PTIR experiments in the visible and near-IR ranges for the first time. While previous PTIR implementations in the visible used total internal reflection illumination requiring challenging sample preparations on an optically transparent prism, the top illumination used here greatly simplifies sample preparation and will foster a broad application of this method.
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Affiliation(s)
- Devon S Jakob
- Nanoscale Device Characterization Division, Physical Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States
| | - Andrea Centrone
- Nanoscale Device Characterization Division, Physical Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States
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64
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Infrared nanospectroscopic imaging of DNA molecules on mica surface. Sci Rep 2022; 12:18972. [PMID: 36348038 PMCID: PMC9643503 DOI: 10.1038/s41598-022-23637-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 11/02/2022] [Indexed: 11/09/2022] Open
Abstract
Significant efforts have been done in last two decades to develop nanoscale spectroscopy techniques owning to their great potential for single-molecule structural detection and in addition, to resolve open questions in heterogeneous biological systems, such as protein-DNA complexes. Applying IR-AFM technique has become a powerful leverage for obtaining simultaneous absorption spectra with a nanoscale spatial resolution for studied proteins, however the AFM-IR investigation of DNA molecules on surface, as a benchmark for a nucleoprotein complexes nanocharacterization, has remained elusive. Herein, we demonstrate methodological approach for acquisition of AFM-IR mapping modalities with corresponding absorption spectra based on two different DNA deposition protocols on spermidine and Ni2+ pretreated mica surface. The nanoscale IR absorbance of distinctly formed DNA morphologies on mica are demonstrated through series of AFM-IR absorption maps with corresponding IR spectrum. Our results thus demonstrate the sensitivity of AFM-IR nanospectroscopy for a nucleic acid research with an open potential to be employed in further investigation of nucleoprotein complexes.
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65
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Su HS, Chang X, Xu B. Surface-enhanced vibrational spectroscopies in electrocatalysis: Fundamentals, challenges, and perspectives. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(22)64157-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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66
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Microplastics and nanoplastics in food, water, and beverages, part II. Methods. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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67
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Matveyenka M, Rizevsky S, Kurouski D. Amyloid aggregates exert cell toxicity causing irreversible damages in the endoplasmic reticulum. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166485. [PMID: 35840040 PMCID: PMC10424722 DOI: 10.1016/j.bbadis.2022.166485] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 06/08/2022] [Accepted: 07/05/2022] [Indexed: 12/31/2022]
Abstract
Amyloid oligomers and fibrils are protein aggregates that cause an onset and progression of many neurodegenerative diseases, diabetes type 2 and systemic amyloidosis. Although a growing body of evidence shows that oligomers and fibrils trigger mitochondrial dysfunction simultaneously enhancing production of reactive oxygen species, exact mechanisms by which these protein aggregates exert their toxicities remain unclear. In this study, we used advanced microscopic and spectroscopic methods to examine topography and structure of insulin aggregates grown in the lipid-free environment, as well as in the presence of major classes of phospho- and sphingolipids. We also employed a set of molecular markers to determine the extent to which insulin aggregates induce a damage of cell endoplasmic reticulum (ER), an important cell organelle used for calcium storage, protein synthesis and folding. Our results show that insulin aggregates activate the expression of Activating Transcription Factor 6 (ATF6), a transmembrane protein that is involved in unfolded protein response (UPR) of the stressed ER. At the same time, two other ER transmembrane proteins, Inositol Requiring 1 (IRE1α) and eLF2a, the product of PKR-like ER kinase (PERK), exhibited very low expression levels. Furthermore, amyloid aggregates trigger an expression of the 78-kDa glucose-regulated protein GRP78, which is also involved in the UPR. We also observed UPR-induced expression of a proapoptotic transcription factor CHOP, which, in turn, regulates expression of caspase 3 kinase and BCL2 protein family members, including the ER localized Bax. These findings show that insulin oligomers and fibrils induce UPR-associated ER stress and ultimately fatal changes in cell homeostasis.
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Affiliation(s)
- Mikhail Matveyenka
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Stanislav Rizevsky
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States; Department of Biotechnology, Binh Duong University, Thu Dau Mot 820000, Viet Nam
| | - 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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68
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Wagner M, Seifert A, Liz-Marzán LM. Towards multi-molecular surface-enhanced infrared absorption using metal plasmonics. NANOSCALE HORIZONS 2022; 7:1259-1278. [PMID: 36047407 DOI: 10.1039/d2nh00276k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Surface-enhanced infrared absorption (SEIRA) leads to a largely improved detection of polar molecules, compared to standard infrared absorption. The enhancement principle is based on localized surface plasmon resonances of the substrate, which match the frequency of molecular vibrations in the analyte of interest. Therefore, in practical terms, the SEIRA sensor needs to be tailored to each specific analyte. We review SEIRA sensors based on metal plasmonics for the detection of biomolecules such as DNA, proteins, and lipids. We further focus this review on chemical SEIRA sensors, with potential applications in quality control, as well as on the improvement in sensor geometry that led to the development of multiresonant SEIRA substrates as sensors for multiple analytes. Finally, we give an introduction into the integration of SEIRA sensors with surface-enhanced Raman scattering (SERS).
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Affiliation(s)
- Marita Wagner
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo de Miramón 194, 20014 Donostia-San Sebastián, Spain.
- CIC nanoGUNE, Basque Research and Technology Alliance (BRTA), 20018 Donostia-San Sebastián, Spain
| | - Andreas Seifert
- CIC nanoGUNE, Basque Research and Technology Alliance (BRTA), 20018 Donostia-San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, 43009 Bilbao, Spain
| | - Luis M Liz-Marzán
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo de Miramón 194, 20014 Donostia-San Sebastián, Spain.
- IKERBASQUE, Basque Foundation for Science, 43009 Bilbao, Spain
- Centro de Investigación Biomédica en Red, Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 20014 Donostia-San Sebastián, Spain
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69
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Mrđenović D, Ge W, Kumar N, Zenobi R. Nanoscale Chemical Imaging of Human Cell Membranes Using Tip-Enhanced Raman Spectroscopy. Angew Chem Int Ed Engl 2022; 61:e202210288. [PMID: 36057139 PMCID: PMC9826433 DOI: 10.1002/anie.202210288] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Indexed: 01/11/2023]
Abstract
Lack of appropriate tools for visualizing cell membrane molecules at the nanoscale in a non-invasive and label-free fashion limits our understanding of many vital cellular processes. Here, we use tip-enhanced Raman spectroscopy (TERS) to visualize the molecular distribution in pancreatic cancer cell (BxPC-3) membranes in ambient conditions without labelling, with a spatial resolution down to ca. 2.5 nm. TERS imaging reveals segregation of phenylalanine-, histidine-, phosphatidylcholine-, protein-, and cholesterol-rich BxPC-3 cell membrane domains at the nm length-scale. TERS imaging also showed a cell membrane region where cholesterol is mixed with protein. Interestingly, the higher resolution TERS imaging revealed that the molecular domains observed on the BxPC-3 cell membrane are not chemically "pure" but also contain other biomolecules. These results demonstrate the potential of TERS for non-destructive and label-free imaging of cell membranes with nanoscale resolution.
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Affiliation(s)
- Dušan Mrđenović
- Department of Chemistry and Applied BiosciencesETH ZürichVladimir-Prelog-Weg 1–5/108093ZürichSwitzerland
| | - Wenjie Ge
- Department of BiologyETH ZurichOtto-Stern-Weg 78093ZürichSwitzerland
| | - Naresh Kumar
- Department of Chemistry and Applied BiosciencesETH ZürichVladimir-Prelog-Weg 1–5/108093ZürichSwitzerland
| | - Renato Zenobi
- Department of Chemistry and Applied BiosciencesETH ZürichVladimir-Prelog-Weg 1–5/108093ZürichSwitzerland
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70
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Zhaliazka K, Kurouski D. Nanoscale Characterization of Parallel and Antiparallel β-Sheet Amyloid Beta 1-42 Aggregates. ACS Chem Neurosci 2022; 13:2813-2820. [PMID: 36122250 PMCID: PMC10405294 DOI: 10.1021/acschemneuro.2c00180] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Abrupt aggregation of amyloid beta (Aβ) peptide is strongly associated with Alzheimer's disease. In this study, we used atomic force microscopy-infrared (AFM-IR) spectroscopy to characterize the secondary structure of Aβ oligomers, protofibrils and fibrils formed at the early (4 h), middle (24 h), and late (72 h) stages of protein aggregation. This innovative spectroscopic approach allows for label-free nanoscale structural characterization of individual protein aggregates. Using AFM-IR, we found that at the early stage of protein aggregation, oligomers with parallel β-sheet dominated. However, these species exhibited slower rates of fibril formation compared to the oligomers with antiparallel β-sheet, which first appeared in the middle stage. These antiparallel β-sheet oligomers rapidly propagated into fibrils that were simultaneously observed together with parallel β-sheet fibrils at the late stage of protein aggregation. Our findings showed that aggregation of Aβ is a complex process that yields several distinctly different aggregates with dissimilar toxicities.
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Affiliation(s)
- Kiryl Zhaliazka
- 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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71
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Matveyenka M, Zhaliazka K, Rizevsky S, Kurouski D. Lipids uniquely alter secondary structure and toxicity of lysozyme aggregates. FASEB J 2022; 36:e22543. [PMID: 36094052 PMCID: PMC10427241 DOI: 10.1096/fj.202200841r] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 08/03/2022] [Accepted: 08/29/2022] [Indexed: 08/17/2023]
Abstract
Abrupt aggregation of misfolded proteins is a hallmark of the large group of amyloid pathologies that include diabetes type 2, Alzheimer and Parkinson's diseases. Protein aggregation yields oligomers and fibrils, β-sheet-rich structures that exert cell toxicity. Microscopic examination of amyloid deposits reveals the presence of lipids membranes, which suggests that lipids can be involved in the process of pathogenic protein assembly. In this study, we show that lipids can uniquely alter the aggregation rates of lysozyme, a protein that is associated with systemic amyloidosis. Specifically, cardiolipin (CL), ceramide (CER), and sphingomyelin (SM) accelerate, phosphatidylcholine (PC) strongly inhibits, whereas phosphatidylserine (PS) has no effect on the rate of protein aggregation. Furthermore, lipids uniquely alter the secondary structure of lysozyme aggregates. Furthermore, we found that lysozyme aggregates grown in the presence of CL, CER, SM, PS, and CL:PC mixtures exert significantly lower production of reactive oxygen species and mitochondrial dysfunction compared to lysozyme:PC aggregates and lysozyme fibrils grown in the lipid-free environment. These findings suggest that a change in the lipid composition of cell membranes, which is taken place upon neurodegeneration, may trigger the formation of toxic protein species that otherwise would not be formed.
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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
| | - Stanislav Rizevsky
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas, USA
- Department of Biotechnology, Binh Duong University, Thu Dau Mot, Vietnam
| | - 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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72
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Zhaliazka K, Rizevsky S, Matveyenka M, Serada V, Kurouski D. Charge of Phospholipids Determines the Rate of Lysozyme Aggregation but Not the Structure and Toxicity of Amyloid Aggregates. J Phys Chem Lett 2022; 13:8833-8839. [PMID: 36111888 PMCID: PMC10405293 DOI: 10.1021/acs.jpclett.2c02126] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Biophysical properties of plasma membranes are determined by a chemical structure of phospholipids, including saturation of fatty acids and charge of polar heads of these molecules. Phospholipids not only determine fluidity and plasticity of membranes but also play an important role in abrupt aggregation of misfolded proteins. In this study, we investigate the role of the charge of the most abundant phospholipids in the plasma membrane on the aggregation properties of the lysozyme. We found that the charge of phospholipids determines the aggregation rate of lysozyme and the morphology of the protein aggregates. However, the secondary structure and toxicity of these protein specimens are determined by the chemical nature rather than the charge of phospholipids. These findings show that the charge of phospholipids can be a key factor that determines the stability and aggregation mechanism of amyloidogenic proteins.
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Affiliation(s)
- Kiryl Zhaliazka
- 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
| | - Mikhail Matveyenka
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas 77843, United States
| | - Valeryia Serada
- 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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73
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Li Z, Kurouski D. Can Light Alter the Yield of Plasmon-Driven Reactions on Gold and Gold-Palladium Nanoplates? NANO LETTERS 2022; 22:7484-7491. [PMID: 36122388 DOI: 10.1021/acs.nanolett.2c02428] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Noble-metal nanostructures, as well as their bimetallic analogues, catalyze a broad spectrum of plasmon-driven reactions. Catalytic properties of such nanostructures arise from light-generated surface plasmon resonances that decay forming transient hot electrons and holes. Hot carriers with "slower" dissipation rates accumulate on nanostructures generating an electrostatic potential. In this study, we examine whether light intensity can alter the electrostatic potential of mono- and bimetallic nanostructures changing yields of plasmon-driven reactions. Using tip-enhanced Raman spectroscopy (TERS), we quantified the yield of plasmon-driven transformations of 4-nitrobenzenethiol (4-NBT) and 3-mercaptobenzoic acid (3-MBA) on gold and gold-palladium nanoplates (AuNPs and Au@PdNPs, respectively). We found that on AuNPs 3-MBA decarboxylated forming thiophenol (TP), whereas 4-NBT was reduced to DMAB. The yield of both TP and DMAB gradually increased with increasing light intensity. On Au@PdNPs, 3-MBA could be reduced to 3-mercaptophenylmethanol (3-MPM), the yield of which was also directly dependent on the light intensity.
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Affiliation(s)
- Zhandong Li
- 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
- The Institute for Quantum Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
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74
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Wang S, Luo Z, Liang J, Hu J, Jiang N, He J, Li Q. Polymer Nanocomposite Dielectrics: Understanding the Matrix/Particle Interface. ACS NANO 2022; 16:13612-13656. [PMID: 36107156 DOI: 10.1021/acsnano.2c07404] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Polymer nanocomposite dielectrics possess exceptional electric properties that are absent in the pristine dielectric polymers. The matrix/particle interface in polymer nanocomposite dielectrics is suggested to play decisive roles on the bulk material performance. Herein, we present a critical overview of recent research advances and important insights in understanding the matrix/particle interfacial characteristics in polymer nanocomposite dielectrics. The primary experimental strategies and state-of-the-art characterization techniques for resolving the local property-structure correlation of the matrix/particle interface are dissected in depth, with a focus on the characterization capabilities of each strategy or technique that other approaches cannot compete with. Limitations to each of the experimental strategy are evaluated as well. In the last section of this Review, we summarize and compare the three experimental strategies from multiple aspects and point out their advantages and disadvantages, critical issues, and possible experimental schemes to be established. Finally, the authors' personal viewpoints regarding the challenges of the existing experimental strategies are presented, and potential directions for the interface study are proposed for future research.
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Affiliation(s)
- Shaojie Wang
- State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Zhen Luo
- State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Jiajie Liang
- State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Jun Hu
- State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Naisheng Jiang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jinliang He
- State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Qi Li
- State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
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75
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Dou T, Zens C, Schröder K, Jiang Y, Makarov AA, Kupfer S, Kurouski D. Solid-to-Liposome Conformational Transition of Phosphatidylcholine and Phosphatidylserine Probed by Atomic Force Microscopy, Infrared Spectroscopy, and Density Functional Theory Calculations. Anal Chem 2022; 94:13243-13249. [PMID: 36107722 PMCID: PMC10405298 DOI: 10.1021/acs.analchem.2c03061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Liposomes are emerging therapeutic formulations for site-specific delivery of chemotherapeutic drugs. The efficiency and selectivity of drug delivery by these carriers largely rely on their surface properties, shape, and size. There is a growing demand for analytical approaches that can be used for structural and morphological characterization of liposomes at the single-vesicle level. AFM-IR is a modern optical nanoscopic technique that combines the advantages of scanning probe microscopy and infrared spectroscopy. Our findings show that AFM-IR can be used to probe conformational changes in phospholipids that take place upon their assembly into liposomes. Such conclusions can be made based on the corresponding changes in intensities of the lipid vibrational bands as the molecules transition from a solid state into large unilamellar vesicles (LUVs). This spectroscopic analysis of LUV formation together with density functional theory calculations also reveals the extent to which the molecular conformation and local environment of the functional groups alter the AFM-IR spectra of phospholipids. Using melittin as a test protein, we also examined the extent to which LUVs can be used for protein internalization. We found that melittin enters LUVs nearly instantaneously, which protects it from possible structural modifications that are caused by a changing environment. This foundational work empowers AFM-IR analysis of liposomes and opens new avenues for determination of the molecular mechanisms of liposome-drug interactions.
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Affiliation(s)
- Tianyi Dou
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas 77843, United States
| | - Clara Zens
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Katrin Schröder
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Yuan Jiang
- Merck & Company Inc., MRL, Analytical Research & Development, Boston, Massachusetts 02115, United States
| | - Alexey A. Makarov
- Merck & Company Inc., MRL, Analytical Research & Development, Boston, Massachusetts 02115, United States
| | - Stephan Kupfer
- Institute of Physical Chemistry, 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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76
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Schwartz JJ, Pavlidis G, Centrone A. Understanding Cantilever Transduction Efficiency and Spatial Resolution in Nanoscale Infrared Microscopy. Anal Chem 2022; 94:13126-13135. [PMID: 36099442 DOI: 10.1021/acs.analchem.2c02612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Photothermal induced resonance (PTIR), also known as AFM-IR, enables nanoscale infrared (IR) imaging and spectroscopy by using the tip of an atomic force microscope to transduce the local photothermal expansion and contraction of a sample. The signal transduction efficiency and spatial resolution of PTIR depend on a multitude of sample, cantilever, and illumination source parameters in ways that are not yet well understood. Here, we elucidate and separate the effects of laser pulse length, pulse shape, sample thermalization time (τ), interfacial thermal conductance, and cantilever detection frequency by devising analytical and numerical models that link a sample's photothermal excitations to the cantilever dynamics over a broad bandwidth (10 MHz). The models indicate that shorter laser pulses excite probe oscillations over broader bandwidths and should be preferred for measuring samples with shorter thermalization times. Furthermore, we show that the spatial resolution critically depends on the interfacial thermal conductance between dissimilar materials and improves monotonically, but not linearly, with increasing cantilever detection frequencies. The resolution can be enhanced for samples that do not fully thermalize between pulses (i.e., laser repetition rates ≳ 1/3τ) as the probed depth becomes smaller than the film thickness. We believe that the insights presented here will accelerate the adoption and impact of PTIR analyses across a wide range of applications by informing experimental designs and measurement strategies as well as by guiding future technical advances.
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Affiliation(s)
- Jeffrey J Schwartz
- Laboratory for Physical Sciences, College Park, Maryland 20740, United States.,Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Georges Pavlidis
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States.,Department of Mechanical Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Andrea Centrone
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
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77
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Wen S, Zhao Y, Wang M, Yuan H, Xu H. Micro(nano)plastics in food system: potential health impacts on human intestinal system. Crit Rev Food Sci Nutr 2022; 64:1429-1447. [PMID: 36066327 DOI: 10.1080/10408398.2022.2116559] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Micro(nano)plastics (MNPs) in human food system have been broadly recognized by researchers and have drawn an increasing public attention to their potential health risks, particularly the risk to the intestinal system regarding the long-term exposure to MNPs through food consumption. This study aims to review the environmental properties (formation and composition) of MNPs and MNPs pollution in human food system following the order of food production, food processing and food consumption. The current analytic and identical technologies utilized by researchers are also summarized in this review. In fact, parts of commonly consumed food raw materials, processed food and the way to take in food all become the possible sources for human MNPs ingestion. In addition, the available literatures investigating MNPs-induced intestinal adverse effect are discussed from in vitro models and in vivo mammalian experiments, respectively. Particle translocation, cytotoxicity, damaged gut barrier, intestinal inflammation as well as microbial alteration are mostly reported. Moreover, the practical remediation strategies for MNPs pollution are also illustrated in the last section. This review is expected to provide a research insight for foodborne MNPs and arouse more public awareness of MNPs pollution in food and potential risk for human intestinal health.
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Affiliation(s)
- Siyue Wen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Yu Zhao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Mengqi Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Hongbin Yuan
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Hengyi Xu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
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78
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Nanoscale chemical imaging of human cell membrane using Tip‐enhanced Raman spectroscopy. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202210288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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79
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Bohlmann Kunz M, Podorova Y, Armstrong ZT, Zanni MT. Time-Domain Photothermal AFM Spectroscopy via Femtosecond Pulse Shaping. Anal Chem 2022; 94:12374-12382. [PMID: 36040762 DOI: 10.1021/acs.analchem.2c01920] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A time-domain version of photothermal microscopy using an atomic force microscope (AFM) is reported, which we call Fourier transform photothermal (FTPT) spectroscopy, where the delay between two laser pulses is varied and the Fourier transform is computed. An acousto-optic modulator-based pulse shaper sets the delay and phases of the pulses shot-to-shot at 100 kHz, enabling background subtraction and data collection in the rotating frame. The pulse shaper is also used to flatten the pulse spectrum, thereby eliminating the need for normalization by the laser spectrum. We demonstrate the method on 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS-Pn) microcrystals and Mn-phthalocyanine islands, confirming subdiffraction spatial resolution, and providing new spectroscopic insights likely linked to structural defects in the crystals.
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Affiliation(s)
- Miriam Bohlmann Kunz
- , Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
| | - Yulia Podorova
- , Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
| | - Zachary T Armstrong
- , Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
| | - Martin T Zanni
- , Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
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80
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Matveyenka M, Rizevsky S, Kurouski D. Length and Unsaturation of Fatty Acids of Phosphatidic Acid Determines the Aggregation Rate of Insulin and Modifies the Structure and Toxicity of Insulin Aggregates. ACS Chem Neurosci 2022; 13:2483-2489. [PMID: 35930674 DOI: 10.1021/acschemneuro.2c00330] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Phosphatidic acid (PA) is a unique plasma membrane lipid that contains fatty acids (FAs) with different lengths and degrees of unsaturation. Under physiological conditions, PA acts as a second messenger regulating a wide variety of cellular processes. At the same time, the role of PA under pathological conditions, which are caused by an abrupt aggregation of amyloid proteins, remains unclear. In this study, we investigated the effect of PA with different lengths and unsaturation of FAs on insulin aggregation. We found that PA with C16:0 FAs strongly inhibited insulin aggregation, whereas PA with C18:0 FAs accelerated it. Furthermore, PA with unsaturated (C18:1) FAs made the insulin form extremely long and thick fibrils that were not observed for PAs with saturated FAs. We also found that the presence of PA with C16:0 FAs resulted in the formation of aggregates that exerted significantly lower cell toxicity compared to the aggregates formed in the presence of PAs with C18:0 and C18:1 FAs. These results suggest that PA may play a key role in neurodegeneration.
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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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81
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Jiang C, Liu S, Zhang T, Liu Q, Alvarez PJJ, Chen W. Current Methods and Prospects for Analysis and Characterization of Nanomaterials in the Environment. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:7426-7447. [PMID: 35584364 DOI: 10.1021/acs.est.1c08011] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Analysis and characterization of naturally occurring and engineered nanomaterials in the environment are critical for understanding their environmental behaviors and defining real exposure scenarios for environmental risk assessment. However, this is challenging primarily due to the low concentration, structural heterogeneity, and dynamic transformation of nanomaterials in complex environmental matrices. In this critical review, we first summarize sample pretreatment methods developed for separation and preconcentration of nanomaterials from environmental samples, including natural waters, wastewater, soils, sediments, and biological media. Then, we review the state-of-the-art microscopic, spectroscopic, mass spectrometric, electrochemical, and size-fractionation methods for determination of mass and number abundance, as well as the morphological, compositional, and structural properties of nanomaterials, with discussion on their advantages and limitations. Despite recent advances in detecting and characterizing nanomaterials in the environment, challenges remain to improve the analytical sensitivity and resolution and to expand the method applications. It is important to develop methods for simultaneous determination of multifaceted nanomaterial properties for in situ analysis and characterization of nanomaterials under dynamic environmental conditions and for detection of nanoscale contaminants of emerging concern (e.g., nanoplastics and biological nanoparticles), which will greatly facilitate the standardization of nanomaterial analysis and characterization methods for environmental samples.
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Affiliation(s)
- Chuanjia Jiang
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Rd., Tianjin 300350, China
| | - Songlin Liu
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Rd., Tianjin 300350, China
| | - Tong Zhang
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Rd., Tianjin 300350, China
| | - Qian Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Pedro J J Alvarez
- Department of Civil and Environmental Engineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Wei Chen
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Rd., Tianjin 300350, China
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82
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Wang L, Wang H, Xu XG. Principle and applications of peak force infrared microscopy. Chem Soc Rev 2022; 51:5268-5286. [PMID: 35703031 DOI: 10.1039/d2cs00096b] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Peak force infrared (PFIR) microscopy is an emerging atomic force microscopy (AFM)-based infrared microscopy that bypasses Abbe's diffraction limit on spatial resolution. The PFIR microscopy utilizes a nanoscopically sharp AFM tip to mechanically detect the tip-enhanced infrared photothermal response of the sample in the time domain. The time-gated mechanical signals of cantilever deflections transduce the infrared absorption of the sample, delivering infrared imaging and spectroscopy capability at sub 10 nm spatial resolution. Both the infrared absorption response and mechanical properties of the sample are obtained in parallel while preserving the surface integrity of the sample. This review describes the constructions of the PFIR microscope and several variations, including multiple-pulse excitation, total internal reflection geometry, dual-color configuration, liquid-phase operations, and integrations with simultaneous surface potential measurement. Representative applications of PFIR microscopy are also included in this review. In the outlook section, we lay out several future directions of innovations in PFIR microscopy and applications in chemical and material research.
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Affiliation(s)
- Le Wang
- Department of Chemistry, Lehigh University, Bethlehem, PA, 18015, USA.
| | - Haomin Wang
- Department of Chemistry, Lehigh University, Bethlehem, PA, 18015, USA.
| | - Xiaoji G Xu
- Department of Chemistry, Lehigh University, Bethlehem, PA, 18015, USA.
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83
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Cai ZF, Käser T, Kumar N, Zenobi R. Visualizing On-Surface Decomposition Chemistry at the Nanoscale Using Tip-Enhanced Raman Spectroscopy. J Phys Chem Lett 2022; 13:4864-4870. [PMID: 35617121 DOI: 10.1021/acs.jpclett.2c01112] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Chemical imaging of molecular decomposition processes at solid-liquid interfaces is a long-standing problem in achieving mechanistic understanding. Conventional analytical tools fail to meet this challenge due to the lack of required chemical sensitivity and specificity at the nanometer scale. In this work, we demonstrate that high-resolution hyperspectral tip-enhanced Raman spectroscopy (TERS) imaging can be a powerful analytical tool for studying on-surface decomposition chemistry at the nanoscale. Specifically, we present a TERS-based hyperspectral approach to visualize the on-surface decomposition process of a pyridine-4-thiol self-assembled monolayer on atomically flat Au(111) surfaces under ambient conditions. Reactive intermediates involved in the degradation process are spectroscopically detected with 5 nm spatial resolution. With supporting density functional theory simulations, a key species could be assigned to the disulfide reaction intermediate. This work opens a new application area for studying on-surface decomposition chemistry and related dynamics quantitatively at solid-liquid interfaces with nanometer spatial resolution.
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Affiliation(s)
- Zhen-Feng Cai
- Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 3, Zurich CH-8093, Switzerland
| | - Timon Käser
- Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 3, Zurich CH-8093, Switzerland
| | - Naresh Kumar
- Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 3, Zurich CH-8093, Switzerland
| | - Renato Zenobi
- Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 3, Zurich CH-8093, Switzerland
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84
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Wang M, Ramer G, Perez-Morelo DJ, Pavlidis G, Schwartz JJ, Yu L, Ilic R, Aksyuk VA, Centrone A. High Throughput Nanoimaging of Thermal Conductivity and Interfacial Thermal Conductance. NANO LETTERS 2022; 22:4325-4332. [PMID: 35579622 DOI: 10.1021/acs.nanolett.2c00337] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Thermal properties of materials are often determined by measuring thermalization processes; however, such measurements at the nanoscale are challenging because they require high sensitivity concurrently with high temporal and spatial resolutions. Here, we develop an optomechanical cantilever probe and customize an atomic force microscope with low detection noise ≈1 fm/Hz1/2 over a wide (>100 MHz) bandwidth that measures thermalization dynamics with ≈10 ns temporal resolution, ≈35 nm spatial resolution, and high sensitivity. This setup enables fast nanoimaging of thermal conductivity (η) and interfacial thermal conductance (G) with measurement throughputs ≈6000× faster than conventional macroscale-resolution time-domain thermoreflectance acquiring the full sample thermalization. As a proof-of-principle demonstration, 100 × 100 pixel maps of η and G of a polymer particle are obtained in 200 s with a small relative uncertainty (<10%). This work paves the way to study fast thermal dynamics in materials and devices at the nanoscale.
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Affiliation(s)
- Mingkang Wang
- Microsystems and Nanotechnology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
- Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, United States
| | - Georg Ramer
- Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, United States
- Nanoscale Devices Characterization Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
- Institute of Chemical Technologies and Analytics, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
| | - Diego J Perez-Morelo
- Microsystems and Nanotechnology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
- Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, United States
| | - Georges Pavlidis
- Nanoscale Devices Characterization Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
- Department of Mechanical Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Jeffrey J Schwartz
- Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, United States
- Nanoscale Devices Characterization Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Liya Yu
- Microsystems and Nanotechnology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Robert Ilic
- Microsystems and Nanotechnology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Vladimir A Aksyuk
- Microsystems and Nanotechnology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Andrea Centrone
- Nanoscale Devices Characterization Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
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85
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Kumar R. Materiomically Designed Polymeric Vehicles for Nucleic Acids: Quo Vadis? ACS APPLIED BIO MATERIALS 2022; 5:2507-2535. [PMID: 35642794 DOI: 10.1021/acsabm.2c00346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Despite rapid advances in molecular biology, particularly in site-specific genome editing technologies, such as CRISPR/Cas9 and base editing, financial and logistical challenges hinder a broad population from accessing and benefiting from gene therapy. To improve the affordability and scalability of gene therapy, we need to deploy chemically defined, economical, and scalable materials, such as synthetic polymers. For polymers to deliver nucleic acids efficaciously to targeted cells, they must optimally combine design attributes, such as architecture, length, composition, spatial distribution of monomers, basicity, hydrophilic-hydrophobic phase balance, or protonation degree. Designing polymeric vectors for specific nucleic acid payloads is a multivariate optimization problem wherein even minuscule deviations from the optimum are poorly tolerated. To explore the multivariate polymer design space rapidly, efficiently, and fruitfully, we must integrate parallelized polymer synthesis, high-throughput biological screening, and statistical modeling. Although materiomics approaches promise to streamline polymeric vector development, several methodological ambiguities must be resolved. For instance, establishing a flexible polymer ontology that accommodates recent synthetic advances, enforcing uniform polymer characterization and data reporting standards, and implementing multiplexed in vitro and in vivo screening studies require considerable planning, coordination, and effort. This contribution will acquaint readers with the challenges associated with materiomics approaches to polymeric gene delivery and offers guidelines for overcoming these challenges. Here, we summarize recent developments in combinatorial polymer synthesis, high-throughput screening of polymeric vectors, omics-based approaches to polymer design, barcoding schemes for pooled in vitro and in vivo screening, and identify materiomics-inspired research directions that will realize the long-unfulfilled clinical potential of polymeric carriers in gene therapy.
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Affiliation(s)
- Ramya Kumar
- Department of Chemical & Biological Engineering, Colorado School of Mines, 1613 Illinois St, Golden, Colorado 80401, United States
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86
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Mrđenović D, Abbott D, Mougel V, Su W, Kumar N, Zenobi R. Visualizing Surface Phase Separation in PS-PMMA Polymer Blends at the Nanoscale. ACS APPLIED MATERIALS & INTERFACES 2022; 14:24938-24945. [PMID: 35590476 DOI: 10.1021/acsami.2c03857] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Phase-separated polymer blend films are an important class of functional materials with numerous technological applications in solar cells, catalysis, and biotechnology. These technologies are underpinned by the precise control of phase separation at the nanometer length-scales, which is highly challenging to visualize using conventional analytical tools. Herein, we introduce tip-enhanced Raman spectroscopy (TERS), in combination with atomic force microscopy (AFM), confocal Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS), as a sensitive nanoanalytical method to determine lateral and vertical phase-separation in polystyrene (PS)-poly(methyl methacrylate) (PMMA) polymer blend films. Correlative topographical, molecular, and elemental information reveals a vertical phase separation of the polymers within the top ca. 20 nm of the blend surface in addition to the lateral phase separation in the bulk. Furthermore, complementary TERS and XPS measurements reveal the presence of PMMA within 9.2 nm of the surface and PS at the subsurface of the polymer blend. This fundamental work establishes TERS as a powerful analytical tool for surface characterization of this important class of polymers at nanometer length scales.
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Affiliation(s)
- Dušan Mrđenović
- Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland
| | - Daniel Abbott
- Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland
| | - Victor Mougel
- Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland
| | - Weitao Su
- School of Sciences, Hangzhou Dianzi University, 310018 Hangzhou, China
| | - Naresh Kumar
- Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland
| | - Renato Zenobi
- Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland
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87
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Schwartz JJ, Jakob DS, Centrone A. A guide to nanoscale IR spectroscopy: resonance enhanced transduction in contact and tapping mode AFM-IR. Chem Soc Rev 2022; 51:5248-5267. [PMID: 35616225 DOI: 10.1039/d2cs00095d] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Infrared (IR) spectroscopy is a broadly applicable, composition sensitive analytical technique. By leveraging the high spatial resolution of atomic force microscopy (AFM), the photothermal effect, and wavelength-tunable lasers, AFM-IR enables IR spectroscopy and imaging with nanoscale (< 10 nm) resolution. The transduction of a sample's photothermal expansion by an AFM probe tip ensures the proportionality between the AFM-IR signal and the sample absorption coefficient, producing images and spectra that are comparable to far-field IR databases and easily interpreted. This convergence of characteristics has spurred robust research efforts to extend AFM-IR capabilities and, in parallel, has enabled AFM-IR to impact numerous fields. In this tutorial review, we present the latest technical breakthroughs in AFM-IR spectroscopy and imaging and discuss its working principles, distinctive characteristics, and best practices for different AFM-IR measurement paradigms. Central to this review, appealing to both expert practitioners and novices alike, is the meticulous understanding of AFM-IR signal transduction, which is essential to take full advantage of AFM-IR capabilities. Here, we critically compile key information and discuss instructive experiments detailing AFM-IR signal transduction and provide guidelines linking experimental parameters to the measurement sensitivity, lateral resolution, and probed depth. Additionally, we provide in-depth tutorials on the most employed AFM-IR variants (resonance-enhanced and tapping mode AFM-IR), discussing technical details and representative applications. Finally, we briefly review recently developed AFM-IR modalities (peak force tapping IR and surface sensitivity mode) and provide insights on the next exciting opportunities and prospects for this fast-growing and evolving field.
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Affiliation(s)
- Jeffrey J Schwartz
- Laboratory for Physical Sciences, College Park, MD 20740, USA.,Nanoscale Device Characterization Division, Physical Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD, 20899, USA.
| | - Devon S Jakob
- Nanoscale Device Characterization Division, Physical Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD, 20899, USA. .,Institute for Soft Matter Synthesis and Metrology, Georgetown University, 3700 O St., NW Washington D.C., 20057, USA
| | - Andrea Centrone
- Nanoscale Device Characterization Division, Physical Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD, 20899, USA.
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88
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Matveyenka M, Rizevsky S, Kurouski D. Unsaturation in the Fatty Acids of Phospholipids Drastically Alters the Structure and Toxicity of Insulin Aggregates Grown in Their Presence. J Phys Chem Lett 2022; 13:4563-4569. [PMID: 35580189 PMCID: PMC9170185 DOI: 10.1021/acs.jpclett.2c00559] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Lipid bilayers play an important role in the pathological assembly of amyloidogenic proteins and peptides. This assembly yields oligomers and fibrils, which are highly toxic protein aggregates. In this study, we investigated the role of saturation in fatty acids of two phospholipids that are present in cell membranes. We found that unsaturated cardiolipin (CL) drastically shortened the lag phase of insulin aggregation. Furthermore, structurally and morphologically different aggregates were formed in the presence of unsaturated CL vs saturated CL. These aggregates exerted drastically different cell toxicity. Both saturated and unsaturated phosphatidylcholine (PC) were able to inhibit insulin aggregation equally efficiently. Similar to CL, structurally different aggregates were formed in the presence of saturated and unsaturated PC. These aggregates exerted different cell toxicities. These results show that unsaturated phospholipids catalyze the formation of more toxic amyloid aggregates comparing to those formed in the presence of saturated lipids.
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Affiliation(s)
| | - Stanislav Rizevsky
- Department of Biotechnology, Binh Duong University, Thu Dau Mot 820000, Vietnam
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89
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Matveyenka M, Rizevsky S, Kurouski D. The Degree of Unsaturation of Fatty Acids in Phosphatidylserine Alters the Rate of Insulin Aggregation and the Structure and Toxicity of Amyloid Aggregates. FEBS Lett 2022; 596:1424-1433. [PMID: 35510803 DOI: 10.1002/1873-3468.14369] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 04/28/2022] [Accepted: 04/29/2022] [Indexed: 11/10/2022]
Abstract
Phosphatidylserine (PS) in the plasma membrane plays an important role in cell signaling and apoptosis. Cell degeneration is also linked to numerous amyloid diseases, pathologies that are associated with aggregation of misfolded proteins. In this work, we examine the effect of both saturated PS (DMPS) and unsaturated PS (DOPS and POPS) on the aggregation properties of insulin, as well as the structure and toxicity of insulin aggregates formed in the presence of these phospholipids. We found that the degree of unsaturation of fatty acids in PS alters the rate of insulin aggregation. We also found that toxicity of insulin-DMPS aggregates is significantly lower than the toxicity of DOPS- and POPS-insulin fibrils, whereas all these lipid-containing aggregates exert lower cell toxicity than insulin fibrils grown in a lipid-free environment.
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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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90
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Zieger S, Jones PD, Koren K. Noise versus Resolution in Optical Chemical Imaging-How Reliable Are Our Measurements? ACS OMEGA 2022; 7:11829-11838. [PMID: 35449925 PMCID: PMC9016884 DOI: 10.1021/acsomega.1c07232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 03/14/2022] [Indexed: 06/14/2023]
Abstract
Optical chemical imaging has established itself as a valuable technique for visualizing analyte distributions in 2D, notably in medical, biological, and environmental applications. In particular for image acquisitions on small scales between few millimeter to the micrometer range, as well as in heterogeneous samples with steep analyte gradients, image resolution is essential. When individual pixels are inspected, however, image noise becomes a metric as relevant as image accuracy and precision, and denoising filters are applied to preserve relevant information. While denoising filters smooth the image noise, they can also lead to a loss of spatial resolution and thus to a loss of relevant information about analyte distributions. To investigate the trade-off between image resolution and noise reduction for information preservation, we studied the impact of random camera noise and noise due to incorrect camera settings on oxygen optodes using the ratiometric imaging technique. First, we estimated the noise amplification across the calibration process using a Monte Carlo simulation for nonlinear fit models. We demonstrated how initially marginal random camera noise results in a significant standard deviation (SD) for oxygen concentration of up to 2.73% air under anoxic conditions, although the measurement was conducted under ideal conditions and over 270 thousand sample pixels were considered during calibration. Second, we studied the effect of the Gaussian denoising filter on a steep oxygen gradient and investigated the impact when the smoothing filter is applied during data processing. Finally, we demonstrated the effectiveness of a Savitzky-Golay filter compared to the well-established Gaussian filter.
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Affiliation(s)
- Silvia
E. Zieger
- Aarhus
University Centre for Water Technology
(WATEC), Department of Biology, Section for Microbiology, Aarhus University, 8000, Aarhus C, Denmark
| | - Peter D. Jones
- NMI
Natural and Medical Sciences Institute at the University of Tübingen, 72770, Reutlingen, Germany
| | - Klaus Koren
- Aarhus
University Centre for Water Technology
(WATEC), Department of Biology, Section for Microbiology, Aarhus University, 8000, Aarhus C, Denmark
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91
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Adsorption of arabinogalactan-proteins from Acacia gums (senegal and seyal) and its molecular fractions onto latex particles. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2021.107360] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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92
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Experimental characterization techniques for plasmon-assisted chemistry. Nat Rev Chem 2022; 6:259-274. [PMID: 37117871 DOI: 10.1038/s41570-022-00368-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/04/2022] [Indexed: 12/19/2022]
Abstract
Plasmon-assisted chemistry is the result of a complex interplay between electromagnetic near fields, heat and charge transfer on the nanoscale. The disentanglement of their roles is non-trivial. Therefore, a thorough knowledge of the chemical, structural and spectral properties of the plasmonic/molecular system being used is required. Specific techniques are needed to fully characterize optical near fields, temperature and hot carriers with spatial, energetic and/or temporal resolution. The timescales for all relevant physical and chemical processes can range from a few femtoseconds to milliseconds, which necessitates the use of time-resolved techniques for monitoring the underlying dynamics. In this Review, we focus on experimental techniques to tackle these challenges. We further outline the difficulties when going from the ensemble level to single-particle measurements. Finally, a thorough understanding of plasmon-assisted chemistry also requires a substantial joint experimental and theoretical effort.
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93
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Rizevsky S, Matveyenka M, Kurouski D. Nanoscale Structural Analysis of a Lipid-Driven Aggregation of Insulin. J Phys Chem Lett 2022; 13:2467-2473. [PMID: 35266717 PMCID: PMC9169669 DOI: 10.1021/acs.jpclett.1c04012] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Abrupt aggregation of misfolded proteins is a hallmark of a large number of severe pathologies, including diabetes types 1 and 2, Alzheimer, and Parkinson diseases. A growing body of evidence suggests that lipids can uniquely change rates of amyloid-associated proteins as well as modify the structure of formed oligomers and fibrils. In this study, we utilize atomic force microscopy infrared (AFM-IR) spectroscopy, also known as nano-IR spectroscopy, to examine the structure of individual insulin oligomers, protofilaments, and fibrils grown in the presence of phospholipids. Our findings show that AFM-IR spectra of insulin oligomers have strong signals of C-H and PO2- vibrations, which points on the presence of lipids in the oligomer structure. Furthermore, substantial shifts in lipid vibrations in AFM-IR spectra of the oligomers relative to the corresponding bands of pure lipids have been observed. This points on strong interactions between a lipid and a protein that are developed at the stage of the oligomer formation.
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Affiliation(s)
- 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
| | - 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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94
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Bonhommeau S, Cooney GS, Huang Y. Nanoscale chemical characterization of biomolecules using tip-enhanced Raman spectroscopy. Chem Soc Rev 2022; 51:2416-2430. [PMID: 35275147 DOI: 10.1039/d1cs01039e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Nanoscale chemical and structural characterization of single biomolecules and assemblies is of paramount importance for applications in biology and medicine. It aims to describe the molecular structure of biomolecules and their interaction with unprecedented spatial resolution to better comprehend underlying molecular mechanisms of biological processes involved in cell activity and diseases. Tip-enhanced Raman scattering (TERS) spectroscopy appears particularly appealing to reach these objectives. This state-of-the-art TERS technique is as versatile as it is ultrasensitive. To perform a successful TERS experiment, special care and a thorough methodology for the preparation of the TERS system, the TERS probe tip, and sample are needed. Intense efforts have been deployed to characterize nucleic acids, proteins and peptides, lipid membranes, and more complex systems such as cells and viruses using TERS. Although the vast majority of studies have first been performed in dry conditions, they have allowed for several scientific breakthroughs. These include DNA and RNA sequencing, and the determination of relationships between protein structure and biological function by the use of increasingly exploitative chemometric tools for spectral data analysis. The nanoscale determination of the secondary structure of amyloid fibrils, protofibrils and oligomers implicated in neurodegenerative diseases could, for instance, be connected with the toxicity of these species, amyloid formation pathways, and their interaction with phospholipids. Single particles of different viral strains could be distinguished from one another by comparison of their protein and lipid contents. In addition, TERS has allowed for the evermore accurate description of the molecular organization of lipid membranes. Very recent advances also demonstrated the possibility to carry out TERS in aqueous medium, which opens thrilling perspectives for the TERS technique in biological, biomedical, and potential clinical applications.
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Affiliation(s)
| | - Gary S Cooney
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400 Talence, France.
| | - Yuhan Huang
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400 Talence, France.
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95
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Rizevsky S, Zhaliazka K, Dou T, Matveyenka M, Kurouski D. Characterization of Substrates and Surface-Enhancement in Atomic Force Microscopy Infrared Analysis of Amyloid Aggregates. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2022; 126:4157-4162. [PMID: 35719853 PMCID: PMC9205157 DOI: 10.1021/acs.jpcc.1c09643] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Atomic force microscopy infrared (AFM-IR) spectroscopy is an emerging analytical technique that can be used to probe the structural organization of specimens with nanometer spatial resolution. A growing body of evidence suggests that nanoscale structural analysis of very small (<10 nm) biological objects, such as viruses and amyloid aggregates, requires substrates that must fit strict criteria of low surface roughness and low IR background, simultaneously. In this study, we examine the suitability of a broad range of substrates commonly used in AFM and IR fields, and we determined that silicon, zinc sulfide, and calcium fluoride are the most ideal substrates for nanoscale imaging of amyloid oligomers, protein aggregates that are directly linked to the onset and progression of neurodegenerative diseases. Our data show that these substrates provide the lowest roughness and the lowest background in the 800-1800 cm-1 spectral window from all examined AFM and IR substrates. We also investigate a contribution of surface enhancement in AFM-IR by the direct comparison of signal intensities from oligomers located on silicon and gold-coated silicon surfaces. We found that metallization of such substrates provides a factor of ~7 enhancements to the IR signal and induces an equivalent enhancement of the sample background in the 950-1250 cm-1 spectral region.
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Affiliation(s)
- 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
| | - 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
| | - 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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96
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Guo X, Lin H, Xu S, He L. Recent Advances in Spectroscopic Techniques for the Analysis of Microplastics in Food. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:1410-1422. [PMID: 35099960 DOI: 10.1021/acs.jafc.1c06085] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Microplastic pollution has become a worldwide concern in aquatic and terrestrial environments. Microplastics could also enter the food chain, causing potential harm to human health. To facilitate the risk assessment of microplastics to humans, it is critically important to have a reliable analytical technique to detect, quantify, and identify microplastics of various materials, sizes, and shapes from environmental, agricultural, and food matrices. Spectroscopic techniques, mainly vibrational spectroscopy (Raman and infrared), are commonly used techniques for microplastic analysis. This review focuses on recent advances of these spectroscopic techniques for the analysis of microplastics in food. The fundamental, recent technical advances of the spectroscopic techniques and their advantages and limitations were summarized. The food sample pretreatment methods and recent applications for detecting and quantifying microplastics in different types of food were reviewed. In addition, the current technical challenges and future research directions were discussed. It is anticipated that the advances in instrument development and methodology innovation will enable spectroscopic techniques to solve critical analytical challenges in microplastic analysis in food, which will facilitate the reliable risk assessment.
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Affiliation(s)
- Xin Guo
- Department of Food Science, University of Massachusetts Amherst, Chenoweth Laboratory, 102 Holdsworth Way, Amherst, Massachusetts 01003, United States
| | - Helen Lin
- Department of Food Science, University of Massachusetts Amherst, Chenoweth Laboratory, 102 Holdsworth Way, Amherst, Massachusetts 01003, United States
| | - Shuping Xu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theorical Chemistry, College of Chemistry, Jilin University, Changchun, Jilin 130012, People's Republic of China
| | - Lili He
- Department of Food Science, University of Massachusetts Amherst, Chenoweth Laboratory, 102 Holdsworth Way, Amherst, Massachusetts 01003, United States
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97
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Ma X, Pavlidis G, Dillon E, Beltran V, Schwartz JJ, Thoury M, Borondics F, Sandt C, Kjoller K, Berrie BH, Centrone A. Micro to Nano: Multiscale IR Analyses Reveal Zinc Soap Heterogeneity in a 19th-Century Painting by Corot. Anal Chem 2022; 94:3103-3110. [PMID: 35138807 DOI: 10.1021/acs.analchem.1c04182] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Formation and aggregation of metal carboxylates (metal soaps) can degrade the appearance and integrity of oil paints, challenging efforts to conserve painted works of art. Endeavors to understand the root cause of metal soap formation have been hampered by the limited spatial resolution of Fourier transform infrared microscopy (μ-FTIR). We overcome this limitation using optical photothermal infrared spectroscopy (O-PTIR) and photothermal-induced resonance (PTIR), two novel methods that provide IR spectra with ≈500 and ≈10 nm spatial resolutions, respectively. The distribution of chemical phases in thin sections from the top layer of a 19th-century painting is investigated at multiple scales (μ-FTIR ≈ 102 μm3, O-PTIR ≈ 10-1 μm3, PTIR ≈ 10-5 μm3). The paint samples analyzed here are found to be mixtures of pigments (cobalt green, lead white), cured oil, and a rich array of intermixed, small (often ≪ 0.1 μm3) zinc soap domains. We identify Zn stearate and Zn oleate crystalline soaps with characteristic narrow IR peaks (≈1530-1558 cm-1) and a heterogeneous, disordered, water-permeable, tetrahedral zinc soap phase, with a characteristic broad peak centered at ≈1596 cm-1. We show that the high signal-to-noise ratio and spatial resolution afforded by O-PTIR are ideal for identifying phase-separated (or locally concentrated) species with low average concentration, while PTIR provides an unprecedented nanoscale view of distributions and associations of species in paint. This newly accessible nanocompositional information will advance our knowledge of chemical processes in oil paint and will stimulate new art conservation practices.
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Affiliation(s)
- Xiao Ma
- Institute for the Conservation of Cultural Heritage, Shanghai University, No. 333 Nanchen Road, Shanghai 200444, China
| | - Georges Pavlidis
- Nanoscale Device Characterization Division, Physical Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States
| | - Eoghan Dillon
- Photothermal Spectroscopy Corporation, 325 Chapala Street, Santa Barbara, California 93101, United States
| | - Victoria Beltran
- IPANEMA, CNRS, Ministère de la Culture et de la Communication Université de Versailles Saint-Quentin-en-Yvelines, USR 3461, Université Paris-Saclay, 91128 Gif-sur-Yvette, France
| | - Jeffrey J Schwartz
- Nanoscale Device Characterization Division, Physical Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States.,Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, United States
| | - Mathieu Thoury
- IPANEMA, CNRS, Ministère de la Culture et de la Communication Université de Versailles Saint-Quentin-en-Yvelines, USR 3461, Université Paris-Saclay, 91128 Gif-sur-Yvette, France
| | - Ferenc Borondics
- Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin BP 48, 91192 Gif-sur-Yvette Cedex, France
| | - Christophe Sandt
- Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin BP 48, 91192 Gif-sur-Yvette Cedex, France
| | - Kevin Kjoller
- Photothermal Spectroscopy Corporation, 325 Chapala Street, Santa Barbara, California 93101, United States
| | - Barbara H Berrie
- Scientific Research Department, National Gallery of Art, 2000B South Club Drive, Landover, Maryland 20785, United States
| | - Andrea Centrone
- Nanoscale Device Characterization Division, Physical Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States
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98
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Abstract
Peak force infrared (PFIR) microscopy achieves nanoscale infrared imaging at sub-10 nm spatial resolution through photothermal mechanical detection of atomic force microscopy (AFM). However, it suffers from a major limitation that only one infrared frequency can be scanned for an AFM frame at a time. To overcome this limitation, we report here dual-color PFIR microscopy that enables simultaneous imaging at two infrared frequencies. This dual-color PFIR microscopy bypasses the limitations of frame drift and distortion of AFM when comparing two images of different infrared frequencies. We benchmark the performance and spatial resolution of this method using structured polymers exhibiting phase separation. We further demonstrate the application of this technique in imaging biological samples by mapping the cell wall of Escherichia coli (E. coli) bacteria. The presence of a bacterial outer membrane was detected without extrinsic labels. This dual-color PFIR microscopy enables simultaneous nondestructive chemical nanoimaging of multiple chemical components and will be useful for potential applications such as in situ dual-channel monitoring of chemical reactions.
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Affiliation(s)
- Qing Xie
- Department of Chemistry, Lehigh University, 6 E. Packer Ave., Bethlehem, Pennsylvania 18015, United States
| | - Jared Wiemann
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Yan Yu
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Xiaoji G Xu
- Department of Chemistry, Lehigh University, 6 E. Packer Ave., Bethlehem, Pennsylvania 18015, United States
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99
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Wang H, Xie Q, Xu XG. Super-resolution mid-infrared spectro-microscopy of biological applications through tapping mode and peak force tapping mode atomic force microscope. Adv Drug Deliv Rev 2022; 180:114080. [PMID: 34906646 DOI: 10.1016/j.addr.2021.114080] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 11/15/2021] [Accepted: 12/06/2021] [Indexed: 11/19/2022]
Abstract
Small biomolecules at the subcellular level are building blocks for the manifestation of complex biological activities. However, non-intrusive in situ investigation of biological systems has been long daunted by the low spatial resolution and poor sensitivity of conventional light microscopies. Traditional infrared (IR) spectro-microscopy can enable label-free visualization of chemical bonds without extrinsic labeling but is still bound by Abbe's diffraction limit. This review article introduces a way to bypass the optical diffraction limit and improve the sensitivity for mid-IR methods - using tip-enhanced light nearfield in atomic force microscopy (AFM) operated in tapping and peak force tapping modes. Working principles of well-established scattering-type scanning near-field optical microscopy (s-SNOM) and two relatively new techniques, namely, photo-induced force microscopy (PiFM) and peak force infrared (PFIR) microscopy, will be briefly presented. With ∼ 10-20 nm spatial resolution and monolayer sensitivity, their recent applications in revealing nanoscale chemical heterogeneities in a wide range of biological systems, including biomolecules, cells, tissues, and biomaterials, will be reviewed and discussed. We also envision several future improvements of AFM-based tapping and peak force tapping mode nano-IR methods that permit them to better serve as a versatile platform for uncovering biological mechanisms at the fundamental level.
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Affiliation(s)
- Haomin Wang
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Qing Xie
- Department of Chemistry, Lehigh University, Bethlehem, PA 18015, USA
| | - Xiaoji G Xu
- Department of Chemistry, Lehigh University, Bethlehem, PA 18015, USA.
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100
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Ural MS, Dartois E, Mathurin J, Desmaële D, Collery P, Dazzi A, Deniset-Besseau A, Gref R. Quantification of drug loading in polymeric nanoparticles using AFM-IR technique: a novel method to map and evaluate drug distribution in drug nanocarriers. Analyst 2022; 147:5564-5578. [DOI: 10.1039/d2an01079h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Atomic force microscopy-infrared spectroscopy allows individual nanoparticle mapping and determination of their drug loading.
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Affiliation(s)
- M. Seray Ural
- Institut de Sciences Moléculaires d'Orsay (ISMO), CNRS UMR 8214, Université Paris-Saclay, 91405, Orsay, France
| | - Emmanuel Dartois
- Institut de Sciences Moléculaires d'Orsay (ISMO), CNRS UMR 8214, Université Paris-Saclay, 91405, Orsay, France
| | - Jérémie Mathurin
- Institut de Chimie Physique (ICP), CNRS UMR 8000, Université Paris-Saclay, 91405, Orsay, France
| | - Didier Desmaële
- Institut Galien (IGPS), CNRS UMR 8612, Université Paris-Sud, Université Paris-Saclay, 91405, Orsay, France
| | - Philippe Collery
- Society for the Coordination of Therapeutic Research, 20220, Algajola, France
| | - Alexandre Dazzi
- Institut de Chimie Physique (ICP), CNRS UMR 8000, Université Paris-Saclay, 91405, Orsay, France
| | - Ariane Deniset-Besseau
- Institut de Chimie Physique (ICP), CNRS UMR 8000, Université Paris-Saclay, 91405, Orsay, France
| | - Ruxandra Gref
- Institut de Sciences Moléculaires d'Orsay (ISMO), CNRS UMR 8214, Université Paris-Saclay, 91405, Orsay, France
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