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Hu Y, Zhang RQ, Liu SL, Wang ZG. In-situ quantification of lipids in live cells through imaging approaches. Biosens Bioelectron 2023; 240:115649. [PMID: 37678059 DOI: 10.1016/j.bios.2023.115649] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/03/2023] [Accepted: 08/29/2023] [Indexed: 09/09/2023]
Abstract
Lipids are important molecules that are widely distributed within the cell, and they play a crucial role in several biological processes such as cell membrane formation, signaling, cell motility and division. Monitoring the spatiotemporal dynamics of cellular lipids in real-time and quantifying their concentrations in situ is crucial since the local concentration of lipids initiates various signaling pathways that regulate cellular processes. In this review, we first introduced the historical background of lipid quantification methods. We then delve into the current state of the art of in situ lipid quantification, including the establishment and utility of fluorescence imaging techniques based on sensors of lipid-binding domains labeled with organic dyes or fluorescent proteins, and Raman and magnetic resonance imaging (MRI) techniques that do not require lipid labeling. Next, we highlighted the biological applications of live-cell lipid quantification techniques in the study of in situ lipid distribution, lipid transformation, and lipid-mediated signaling pathways. Finally, we discussed the technical challenges and prospects for the development of lipid quantification in live cells, with the aim of promoting the development of in situ lipid quantification in live cells, which may have a profound impact on the biological and medical fields.
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Affiliation(s)
- Yusi Hu
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Centre for New Organic Matter, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Centre for Analytical Sciences, College of Chemistry and School of Medicine, Nankai University, Tianjin, 300071, China
| | - Rui-Qiao Zhang
- Qingdao Academy of Agricultural Sciences, Qingdao, 266100, China
| | - Shu-Lin Liu
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Centre for New Organic Matter, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Centre for Analytical Sciences, College of Chemistry and School of Medicine, Nankai University, Tianjin, 300071, China.
| | - Zhi-Gang Wang
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Centre for New Organic Matter, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Centre for Analytical Sciences, College of Chemistry and School of Medicine, Nankai University, Tianjin, 300071, China.
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2
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Li C, Feng C, Xu R, Jiang B, Li L, He Y, Tu C, Li Z. The emerging applications and advancements of Raman spectroscopy in pediatric cancers. Front Oncol 2023; 13:1044177. [PMID: 36814817 PMCID: PMC9939836 DOI: 10.3389/fonc.2023.1044177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 01/18/2023] [Indexed: 02/09/2023] Open
Abstract
Although the survival rate of pediatric cancer has significantly improved, it is still an important cause of death among children. New technologies have been developed to improve the diagnosis, treatment, and prognosis of pediatric cancers. Raman spectroscopy (RS) is a non-destructive analytical technique that uses different frequencies of scattering light to characterize biological specimens. It can provide information on biological components, activities, and molecular structures. This review summarizes studies on the potential of RS in pediatric cancers. Currently, studies on the application of RS in pediatric cancers mainly focus on early diagnosis, prognosis prediction, and treatment improvement. The results of these studies showed high accuracy and specificity. In addition, the combination of RS and deep learning is discussed as a future application of RS in pediatric cancer. Studies applying RS in pediatric cancer illustrated good prospects. This review collected and analyzed the potential clinical applications of RS in pediatric cancers.
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Affiliation(s)
- Chenbei Li
- Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, China,Department of Orthopaedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Chengyao Feng
- Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, China,Department of Orthopaedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ruiling Xu
- Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, China,Department of Orthopaedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Buchan Jiang
- Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, China,Department of Orthopaedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lan Li
- Department of Pathology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yu He
- Department of Radiology, Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Chao Tu
- Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, China,Department of Orthopaedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China,*Correspondence: Chao Tu, ; Zhihong Li,
| | - Zhihong Li
- Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, China,Department of Orthopaedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China,*Correspondence: Chao Tu, ; Zhihong Li,
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3
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Pelevina AV, Berestovskaya YY, Grachev VA, Dorofeev AG, Slatinskaya OV, Maksimov GV, Kallistova AY, Nikolaev YA, Grouzdev EV, Ravin NV, Pimenov NV, Mardanov AV. A Phosphate-Accumulating Microbial Community in the Laboratory Bioreactor Predominated by “Candidatus Accumulibacter”. Microbiology (Reading) 2022. [DOI: 10.1134/s0026261722800232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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4
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Singh S, Agarwal A, Avni A, Mukhopadhyay S. Ultrasensitive Characterization of the Prion Protein by Surface-Enhanced Raman Scattering: Selective Enhancement via Electrostatic Tethering of the Intrinsically Disordered Domain with Functionalized Silver Nanoparticles. J Phys Chem Lett 2021; 12:3187-3194. [PMID: 33759537 DOI: 10.1021/acs.jpclett.1c00240] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Surface-enhanced Raman scattering (SERS) circumvents the inherent insensitivity of Raman spectroscopy and offers a powerful tool for the ultrasensitive detection and characterization of biomolecules at low concentrations. Here we show that SERS via electrostatic tethering between surface-modified negatively charged silver nanoparticles and highly positively charged intrinsically disordered N-terminal domain of the prion protein allows highly sensitive and reproducible protein detection and characterization at as low as hundreds of nanomolar protein concentrations. These measurements preferentially illuminate a selective part of the protein due to a sharp dependence of the near-field intensity on the distance between the nanoparticle surface and the protein. We also demonstrate that by shortening the length of the disordered tail it is possible to achieve a domain-selective Raman enhancement to study the C-terminal globular domain. Our tether-length-dependent SERS methodology will serve as a potent, noninvasive, and label-free strategy to detect and characterize a wide range of proteins possessing disordered segments.
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5
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Nitika N, Chhabra H, Rathore AS. Raman spectroscopy for in situ, real time monitoring of protein aggregation in lyophilized biotherapeutic products. Int J Biol Macromol 2021; 179:309-313. [PMID: 33689770 DOI: 10.1016/j.ijbiomac.2021.02.214] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/19/2021] [Accepted: 02/28/2021] [Indexed: 10/22/2022]
Abstract
Quality of biotherapeutic products is of paramount importance for ensuring patient safety. Analytical tools that can facilitate rapid quality assessment of the therapeutic product at the point of care are very much in demand. In this article, we apply chemometrics based analysis of Raman spectra towards quantitative prediction of protein aggregation in lyophilized biotherapeutic products. Two commercially available therapeutic proteins, erythropoietin (EPO) and human growth hormone (HGH), have been used to demonstrate the applicability of the proposed approach. Thermally induced protein aggregation was monitored by size exclusion chromatography as well as Raman spectroscopy with a 785 nm wavelength laser. Partial least square (PLS) regression was used to analyse the Raman spectra and create a model for quantitative determination of aggregate. Satisfactory performance was observed with both EPO and HGH with R2 of 0.91 and 0.94, cross-validation correlation coefficient of 0.85 and 0.89, and Root Mean Square Error computed from cross calibration (RMSEcv) of 5.25 and 1.92, respectively. The developed approach can enable rapid and accurate assessment of aggregation in lyophilized samples of biotherapeutic products. The study also demonstrates novel use of Raman spectroscopy for protein quantification through a vial.
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Affiliation(s)
- Nitika Nitika
- Department of Chemical Engineering, Indian Institute of Technology Delhi, New Delhi, India
| | - Hemlata Chhabra
- Department of Chemical Engineering, Indian Institute of Technology Delhi, New Delhi, India
| | - Anurag S Rathore
- Department of Chemical Engineering, Indian Institute of Technology Delhi, New Delhi, India.
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6
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Rangan S, Schulze HG, Vardaki MZ, Blades MW, Piret JM, Turner RFB. Applications of Raman spectroscopy in the development of cell therapies: state of the art and future perspectives. Analyst 2020; 145:2070-2105. [DOI: 10.1039/c9an01811e] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This comprehensive review article discusses current and future perspectives of Raman spectroscopy-based analyses of cell therapy processes and products.
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Affiliation(s)
- Shreyas Rangan
- Michael Smith Laboratories
- The University of British Columbia
- Vancouver
- Canada
- School of Biomedical Engineering
| | - H. Georg Schulze
- Michael Smith Laboratories
- The University of British Columbia
- Vancouver
- Canada
| | - Martha Z. Vardaki
- Michael Smith Laboratories
- The University of British Columbia
- Vancouver
- Canada
| | - Michael W. Blades
- Department of Chemistry
- The University of British Columbia
- Vancouver
- Canada
| | - James M. Piret
- Michael Smith Laboratories
- The University of British Columbia
- Vancouver
- Canada
- School of Biomedical Engineering
| | - Robin F. B. Turner
- Michael Smith Laboratories
- The University of British Columbia
- Vancouver
- Canada
- Department of Chemistry
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7
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Machiesky L, Côté O, Kirkegaard LH, Mefferd SC, Larkin C. A rapid lateral flow immunoassay for identity testing of biotherapeutics. J Immunol Methods 2019; 474:112666. [DOI: 10.1016/j.jim.2019.112666] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/12/2019] [Accepted: 09/12/2019] [Indexed: 10/26/2022]
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8
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Jurasekova Z, Garcia-Leis A, Sanchez-Cortes S, Tinti A, Torreggiani A. Structural analysis of the neuropeptide substance P by using vibrational spectroscopy. Anal Bioanal Chem 2019; 411:7419-7430. [PMID: 31494687 DOI: 10.1007/s00216-019-02097-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Substance P (SP) is one of the most studied peptide hormones and knowing the relationship between its structure and function may have important therapeutic applications in the treatment of a variety of stress-related illnesses. In order to obtain a deeper insight into its folding, the effects of different factors, such as pH changes, the presence of Ca2+ ions, and the substitution of the Met-NH2 moiety in the SP structure, was studied by Raman and infrared spectroscopies. SP has a pH-dependent structure. Under acidic-neutral conditions, SP possesses a prevalent β-sheet structure although also other secondary structure elements are present. By increasing pH, a higher orderliness in the SP secondary structure is induced, as well as the formation of strongly bound intermolecular β-strands with a parallel alignment, which favour the self-assembly of SP in β-aggregates. The substitution of the Met-NH2 moiety with the acidic functional group in the SP sequence, giving rise to a not biologically active SP analogue, results in a more disordered folding, where the predominant contribution comes from a random coil. Conversely, the presence of Ca2+ ions affects slightly but sensitively the folding of the polypeptide chain, by favouring the α-helical content and a different alignment of β-strands; these are structural elements, which may favour the SP biological activity. In addition, the capability of SERS spectroscopy to detect SP in its biologically active form was also tested by using different metal nanoparticles. Thanks to the use of silver NPs prepared by reduction of silver nitrate with hydroxylamine hydrochloride, SP can be detected at very low peptide concentration (~ 90 nM). However, the SERS spectra cannot be obtained under alkaline conditions since both the formation of SP aggregates and the lack of ion pairs do not allow a strong enough interaction of SP with silver NPs. Graphical abstract.
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Affiliation(s)
- Zuzana Jurasekova
- Department of Biophysics, Faculty of Science, P. J. Šafárik University in Košice, Jesenná 5, 040 01, Košice, Slovakia.
- Center for Interdisciplinary Biosciences, Technology and Innovation Park, P. J. Šafárik University in Košice, Jesenná 5, 040 01, Košice, Slovakia.
| | - Adianez Garcia-Leis
- Instituto de Estructura de la Materia, CSIC, Serrano 121, 28006, Madrid, Spain
| | | | - Anna Tinti
- Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Via Belmeloro 8/2, 40126, Bologna, Italy
| | - Armida Torreggiani
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, CNR, Via P. Gobetti No. 101, 40129, Bologna, Italy.
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9
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Krajczewski J, Kołątaj K, Pietrasik S, Kudelski A. Silica-covered star-shaped Au-Ag nanoparticles as new electromagnetic nanoresonators for Raman characterisation of surfaces. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 193:1-7. [PMID: 29202354 DOI: 10.1016/j.saa.2017.11.060] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 11/11/2017] [Accepted: 11/27/2017] [Indexed: 06/07/2023]
Abstract
One of the tools used for determining the composition of surfaces of various materials is shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS). SHINERS is a modification of "standard" surface-enhanced Raman spectroscopy (SERS), in which, before Raman spectra are recorded, the surfaces analysed are covered with a layer of plasmonic nanoparticles protected by a very thin layer of a transparent dielectric. The plasmonic cores of the core-shell nanoparticles used in SHINERS measurements generate a local enhancement of the electric field of the incident electromagnetic radiation, whereas the transparent coatings prevent the metal cores from coming into direct contact with the material being analysed. In this contribution, we propose a new type of SHINERS nanoresonators that contain spiky, star-shaped metal cores (produced from a gold/silver alloy). These spiky, star-shaped Au-Ag nanoparticles have been covered by a layer of silica. The small radii of the ends of the tips of the spikes of these plasmonic nanostructures make it possible to generate a very large enhancement of the electromagnetic field there, with the result that such SHINERS nanoresonators are significantly more efficient than the standard semi-spherical nanostructures. The Au-Ag alloy nanoparticles were synthesised by the reduction of a solution containing silver nitrate and chloroauric acid by ascorbic acid. The final geometry of the nanostructures thus formed was controlled by changing the ratio between the concentrations of AuCl4- and Ag+ ions. The shape of the synthesised star-shaped Au-Ag nanoparticles does not change significantly during the two standard procedures for depositing a layer of silica (by the decomposition of sodium silicate or the decomposition of tetraethyl orthosilicate).
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Affiliation(s)
- Jan Krajczewski
- Faculty of Chemistry, University of Warsaw, ul. Pasteura 1, 02-093 Warsaw, Poland
| | - Karol Kołątaj
- Faculty of Chemistry, University of Warsaw, ul. Pasteura 1, 02-093 Warsaw, Poland
| | - Sylwia Pietrasik
- Faculty of Chemistry, University of Warsaw, ul. Pasteura 1, 02-093 Warsaw, Poland
| | - Andrzej Kudelski
- Faculty of Chemistry, University of Warsaw, ul. Pasteura 1, 02-093 Warsaw, Poland.
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10
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Schie IW, Rüger J, Mondol AS, Ramoji A, Neugebauer U, Krafft C, Popp J. High-Throughput Screening Raman Spectroscopy Platform for Label-Free Cellomics. Anal Chem 2018; 90:2023-2030. [PMID: 29286634 DOI: 10.1021/acs.analchem.7b04127] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We present a high-throughput screening Raman spectroscopy (HTS-RS) platform for a rapid and label-free macromolecular fingerprinting of tens of thousands eukaryotic cells. The newly proposed label-free HTS-RS platform combines automated imaging microscopy with Raman spectroscopy to enable a rapid label-free screening of cells and can be applied to a large number of biomedical and clinical applications. The potential of the new approach is illustrated by two applications. (1) HTS-RS-based differential white blood cell count. A classification model was trained using Raman spectra of 52 218 lymphocytes, 48 220 neutrophils, and 7 294 monocytes from four volunteers. The model was applied to determine a WBC differential for two volunteers and three patients, producing comparable results between HTS-RS and machine counting. (2) HTS-RS-based identification of circulating tumor cells (CTCs) in 1:1, 1:9, and 1:99 mixtures of Panc1 cells and leukocytes yielded ratios of 55:45, 10:90, and 3:97, respectively. Because the newly developed HTS-RS platform can be transferred to many existing Raman devices in all laboratories, the proposed implementation will lead to a significant expansion of Raman spectroscopy as a standard tool in biomedical cell research and clinical diagnostics.
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Affiliation(s)
- Iwan W Schie
- Leibniz Institute of Photonic Technology Jena, Germany 07745
| | - Jan Rüger
- Leibniz Institute of Photonic Technology Jena, Germany 07745
| | | | - Anuradha Ramoji
- Leibniz Institute of Photonic Technology Jena, Germany 07745.,Center for Sepsis Control and Care (CSCC), Jena University Hospital , Jena, Germany 07743
| | - Ute Neugebauer
- Leibniz Institute of Photonic Technology Jena, Germany 07745.,Center for Sepsis Control and Care (CSCC), Jena University Hospital , Jena, Germany 07743.,Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University , Jena, Germany 07743
| | | | - Jürgen Popp
- Leibniz Institute of Photonic Technology Jena, Germany 07745.,Center for Sepsis Control and Care (CSCC), Jena University Hospital , Jena, Germany 07743.,Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University , Jena, Germany 07743
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11
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Franco D, Trusso S, Fazio E, Allegra A, Musolino C, Speciale A, Cimino F, Saija A, Neri F, Nicolò MS, Guglielmino SPP. Raman spectroscopy differentiates between sensitive and resistant multiple myeloma cell lines. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 187:15-22. [PMID: 28645097 DOI: 10.1016/j.saa.2017.06.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 05/22/2017] [Accepted: 06/15/2017] [Indexed: 05/25/2023]
Abstract
Current methods for identifying neoplastic cells and discerning them from their normal counterparts are often nonspecific and biologically perturbing. Here, we show that single-cell micro-Raman spectroscopy can be used to discriminate between resistant and sensitive multiple myeloma cell lines based on their highly reproducible biomolecular spectral signatures. In order to demonstrate robustness of the proposed approach, we used two different cell lines of multiple myeloma, namely MM.1S and U266B1, and their counterparts MM.1R and U266/BTZ-R subtypes, resistant to dexamethasone and bortezomib, respectively. Then, micro-Raman spectroscopy provides an easily accurate and noninvasive method for cancer detection for both research and clinical environments. Characteristic peaks, mostly due to different DNA/RNA ratio, nucleic acids, lipids and protein concentrations, allow for discerning the sensitive and resistant subtypes. We also explored principal component analysis (PCA) for resistant cell identification and classification. Sensitive and resistant cells form distinct clusters that can be defined using just two principal components. The identification of drug-resistant cells by confocal micro-Raman spectroscopy is thus proposed as a clinical tool to assess the development of resistance to glucocorticoids and proteasome inhibitors in myeloma cells.
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Affiliation(s)
- Domenico Franco
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Italy
| | - Sebastiano Trusso
- Institute of Chemical-Physical Processes (IPCF)-CNR, Messina, Italy.
| | - Enza Fazio
- Department of Mathematical and Computational Sciences, Physical Science and Earth Science, University of Messina, Italy
| | - Alessandro Allegra
- Division of Hematology, Department of General Surgery, Pathological Anatomy and Oncology, University of Messina, Italy
| | - Caterina Musolino
- Division of Hematology, Department of General Surgery, Pathological Anatomy and Oncology, University of Messina, Italy
| | - Antonio Speciale
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Italy
| | - Francesco Cimino
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Italy
| | - Antonella Saija
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Italy
| | - Fortunato Neri
- Department of Mathematical and Computational Sciences, Physical Science and Earth Science, University of Messina, Italy
| | - Marco S Nicolò
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Italy
| | - Salvatore P P Guglielmino
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Italy.
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12
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Carpinteri A, Lacidogna G, Piana G, Bassani A. Terahertz mechanical vibrations in lysozyme: Raman spectroscopy vs modal analysis. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.02.099] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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13
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Villa JEL, Poppi RJ. A portable SERS method for the determination of uric acid using a paper-based substrate and multivariate curve resolution. Analyst 2017; 141:1966-72. [PMID: 26844706 DOI: 10.1039/c5an02398j] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper presents a portable quantitative method for the on-site determination of uric acid in urine using surface-enhanced Raman spectroscopy (SERS) and gold nanoparticle-coated paper as a substrate. A procedure was developed for the rapid preparation of cost-effective SERS substrates that enabled the adequate control of a homogeneous active area and the use of small quantities of gold nanoparticles per substrate. The standard addition method and multivariate curve resolution-alternating least squares (MCR-ALS) were applied to compensate for the matrix effect and to address overlapping bands between uric acid and interference SERS spectra. The proposed methodology demonstrated better performance than conventional univariate methods (in terms of linearity, accuracy and precision), a wide linear range (0-3.5 mmol L(-1)) and an adequate limit of detection (0.11 mmol L(-1)). For the first time, a portable SERS method coupled with chemometrics was developed for the routine analysis of uric acid at clinically relevant concentrations with minimal sample preparation and easy extension for the on-site determination of other biomarkers in complex sample matrices.
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Affiliation(s)
- Javier E L Villa
- Institute of Chemistry, University of Campinas, P.O. Box 6154, 13081-970 Campinas, SP, Brazil.
| | - Ronei J Poppi
- Institute of Chemistry, University of Campinas, P.O. Box 6154, 13081-970 Campinas, SP, Brazil.
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14
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Krafft C, Schie IW, Meyer T, Schmitt M, Popp J. Developments in spontaneous and coherent Raman scattering microscopic imaging for biomedical applications. Chem Soc Rev 2016; 45:1819-49. [PMID: 26497570 DOI: 10.1039/c5cs00564g] [Citation(s) in RCA: 130] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
First, the potential role of Raman-based techniques in biomedicine is introduced. Second, an overview about the instrumentation for spontaneous and coherent Raman scattering microscopic imaging is given with a focus of recent developments. Third, imaging strategies are summarized including sequential registration with laser scanning microscopes, line imaging and global or wide-field imaging. Finally, examples of biomedical applications are presented in the context of single cells, laser tweezers, tissue sections, biopsies and whole animals.
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Affiliation(s)
- C Krafft
- Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745 Jena, Germany.
| | - I W Schie
- Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745 Jena, Germany.
| | - T Meyer
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - M Schmitt
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - J Popp
- Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745 Jena, Germany. and Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743 Jena, Germany
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15
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Karnawat V, Mehrotra S, Balaram H, Puranik M. Exquisite Modulation of the Active Site of Methanocaldococcus jannaschii Adenylosuccinate Synthetase in Forward Reaction Complexes. Biochemistry 2016; 55:2491-9. [PMID: 27050719 DOI: 10.1021/acs.biochem.5b01386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In enzymes that conduct complex reactions involving several substrates and chemical transformations, the active site must reorganize at each step to complement the transition state of that chemical step. Adenylosuccinate synthetase (ADSS) utilizes a molecule each of guanosine 5'-monophosphate (GTP) and aspartate to convert inosine 5'-monophosphate (IMP) into succinyl adenosine 5'-monophosphate (sAMP) through several kinetic intermediates. Here we followed catalysis by ADSS through high-resolution vibrational spectral fingerprints of each substrate and intermediate involved in the forward reaction. Vibrational spectra show differential ligand distortion at each step of catalysis, and band positions of substrates are influenced by binding of cosubstrates. We found that the bound IMP is distorted toward its N1-deprotonated form even in the absence of any other ligands. Several specific interactions between GTP and active-site amino acid residues result in large Raman shifts and contribute substantially to intrinsic binding energy. When both IMP and GTP are simultaneously bound to ADSS, IMP is converted into an intermediate 6-phosphoryl inosine 5'-monophosphate (6-pIMP). The 6-pIMP·ADSS complex was found to be stable upon binding of the third ligand, hadacidin (HDA), an analogue of l-aspartate. We find that in the absence of HDA, 6-pIMP is quickly released from ADSS, is unstable in solution, and converts back into IMP. HDA allosterically stabilizes ADSS through local conformational rearrangements. We captured this complex and determined the spectra and structure of 6-pIMP in its enzyme-bound state. These results provide important insights into the exquisite tuning of active-site interactions with changing substrate at each kinetic step of catalysis.
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Affiliation(s)
- Vishakha Karnawat
- Indian Institute of Science Education and Research , Pune 411008, India
| | - Sonali Mehrotra
- Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bangalore 560064, India
| | - Hemalatha Balaram
- Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bangalore 560064, India
| | - Mrinalini Puranik
- Indian Institute of Science Education and Research , Pune 411008, India
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16
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Fazio E, Trusso S, Franco D, Nicolò MS, Allegra A, Neri F, Musolino C, Guglielmino SPP. A micro-Raman spectroscopic investigation of leukemic U-937 cells in aged cultures. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 159:21-29. [PMID: 26827173 DOI: 10.1016/j.saa.2016.01.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 01/13/2016] [Accepted: 01/20/2016] [Indexed: 06/05/2023]
Abstract
Recently it has been shown that micro-Raman spectroscopy combined with multivariate analysis is able to discriminate among different types of tissues and tumoral cells by the detection of significant alterations and/or reorganizations of complex biological molecules, such as nucleic acids, lipids and proteins. Moreover, its use, being in principle a non-invasive technique, appears an interesting clinical tool for the evaluation of the therapeutical effects and of the disease progression. In this work we analyzed molecular changes in aged cultures of leukemia model U937 cells with respect to fresh cultures of the same cell line. In fact, structural variations of individual neoplastic cells on aging may lead to a heterogeneous data set, therefore falsifying confidence intervals, increasing error levels of analysis and consequently limiting the use of Raman spectroscopy analysis. We found that the observed morphological changes of U937 cells corresponded to well defined modifications of the Raman contributions in selected spectral regions, where markers of specific functional groups, useful to characterize the cell state, are present. A detailed subcellular analysis showed a change in cellular organization as a function of time, and correlated to a significant increase of apoptosis levels. Besides the aforementioned study, Raman spectra were used as input for principal component analysis (PCA) in order to detect and classify spectral changes among U937 cells.
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Affiliation(s)
- Enza Fazio
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, University of Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Sebastiano Trusso
- CNR-IPCF Istituto per i Processi Chimico-Fisici, Viale F. Stagno d'Alcontres 37, 98158 Messina, Italy
| | - Domenico Franco
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy.
| | - Marco Sebastiano Nicolò
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Alessandro Allegra
- Dipartimento di Patologia Umana dell'adulto e dell'età Evolutiva "Gaetano Barresi", University of Messina, Via Consolare Valeria, 1, 98125 Messina, Italy
| | - Fortunato Neri
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, University of Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Caterina Musolino
- Dipartimento di Patologia Umana dell'adulto e dell'età Evolutiva "Gaetano Barresi", University of Messina, Via Consolare Valeria, 1, 98125 Messina, Italy
| | - Salvatore P P Guglielmino
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy
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17
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Paidi SK, Siddhanta S, Strouse R, McGivney JB, Larkin C, Barman I. Rapid Identification of Biotherapeutics with Label-Free Raman Spectroscopy. Anal Chem 2016; 88:4361-8. [DOI: 10.1021/acs.analchem.5b04794] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Santosh Kumar Paidi
- Department
of Mechanical Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Soumik Siddhanta
- Department
of Mechanical Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Robert Strouse
- Bioprocess
Development, MedImmune LLC, Gaithersburg, Maryland 20878, United States
| | - James B McGivney
- Bioprocess
Development, MedImmune LLC, Gaithersburg, Maryland 20878, United States
| | - Christopher Larkin
- Bioprocess
Development, MedImmune LLC, Gaithersburg, Maryland 20878, United States
| | - Ishan Barman
- Department
of Mechanical Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
- Department
of Oncology, Johns Hopkins University, Baltimore, Maryland 21287, United States
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18
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Koch H, Noack K, Will S. Raman excess spectroscopy vs. principal component analysis: probing the intermolecular interactions between chiral molecules and imidazolium-based ionic liquids. Phys Chem Chem Phys 2016; 18:28370-28375. [DOI: 10.1039/c6cp04372k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PCA: Optical separation of glucose enantiomers based on enantioselective interactions.
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Affiliation(s)
- H. Koch
- Lehrstuhl für Technische Thermodynamik (LTT) and Erlangen Graduate School in Advanced Optical Technologies (SAOT)
- Friedrich-Alexander-Universität Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| | - K. Noack
- Lehrstuhl für Technische Thermodynamik (LTT) and Erlangen Graduate School in Advanced Optical Technologies (SAOT)
- Friedrich-Alexander-Universität Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| | - S. Will
- Lehrstuhl für Technische Thermodynamik (LTT) and Erlangen Graduate School in Advanced Optical Technologies (SAOT)
- Friedrich-Alexander-Universität Erlangen-Nürnberg
- 91058 Erlangen
- Germany
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19
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Carey PR, Heidari-Torkabadi H. New techniques in antibiotic discovery and resistance: Raman spectroscopy. Ann N Y Acad Sci 2015; 1354:67-81. [PMID: 26275225 DOI: 10.1111/nyas.12847] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 06/15/2015] [Accepted: 06/18/2015] [Indexed: 11/29/2022]
Abstract
Raman spectroscopy can play a role in both antibiotic discovery and understanding the molecular basis of resistance. A major challenge in drug development is to measure the population of the drug molecules inside a cell line and to follow the chemistry of their reactions with intracellular targets. Recently, a protocol based on Raman microscopy has been developed that achieves these goals. Drug candidates are soaked into live bacterial cells and subsequently the cells are frozen and freeze-dried. The samples yield exemplary (nonresonance) Raman data that provide a measure of the number of drug molecules within each cell, as well as details of drug-target interactions. Results are discussed for two classes of compounds inhibiting either β-lactamase or dihydrofolate reductase enzymes in a number of Gram-positive or Gram-negative cell lines. The advantages of the present protocol are that it does not use labels and it can measure the kinetics of cell-compound uptake on the time scale of minutes. Spectroscopic interpretation is supported by in vitro Raman experiments. Studying drug-target interactions in aqueous solution and in single crystals can provide molecular level insights into drug-target interactions, which, in turn, provide the underpinnings of our understanding of data from bacterial cells. Thus, the applicability of X-ray crystallographic-derived data to in-cell chemistry can be tested.
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Affiliation(s)
- Paul R Carey
- Department of Biochemistry.,Department of Chemistry, Case Western Reserve University, Cleveland, Ohio
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20
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Heidari-Torkabadi H, Che T, Lombardo MN, Wright DL, Anderson AC, Carey PR. Measuring Propargyl-Linked Drug Populations Inside Bacterial Cells, and Their Interaction with a Dihydrofolate Reductase Target, by Raman Microscopy. Biochemistry 2015; 54:2719-26. [DOI: 10.1021/acs.biochem.5b00202] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
| | | | - Michael N. Lombardo
- Department
of Pharmaceutical Sciences, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Dennis L. Wright
- Department
of Pharmaceutical Sciences, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Amy C. Anderson
- Department
of Pharmaceutical Sciences, University of Connecticut, Storrs, Connecticut 06269, United States
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21
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Gao Y, Chen L, Dai X, Song R, Wang B, Wang Z. A strong charge-transfer effect in surface-enhanced Raman scattering induced by valence electrons of actinide elements. RSC Adv 2015. [DOI: 10.1039/c5ra03408f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The 6d electrons of Ac atom involved in excited transitions induce a strong CT-SERS enhancement which can be tuned by changing the conformation of pyridine-Ac@Au7 complexes.
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Affiliation(s)
- Yang Gao
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
| | - Lei Chen
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
| | - Xing Dai
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
| | - Ruixia Song
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
| | - Bo Wang
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
| | - Zhigang Wang
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
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22
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Dworkowski FSN, Hough MA, Pompidor G, Fuchs MR. Challenges and solutions for the analysis of in situ, in crystallo micro-spectrophotometric data. ACTA CRYSTALLOGRAPHICA. SECTION D, BIOLOGICAL CRYSTALLOGRAPHY 2015; 71:27-35. [PMID: 25615857 PMCID: PMC4304683 DOI: 10.1107/s1399004714015107] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 06/26/2014] [Indexed: 11/22/2022]
Abstract
Combining macromolecular crystallography with in crystallo micro-spectrophotometry yields valuable complementary information on the sample, including the redox states of metal cofactors, the identification of bound ligands and the onset and strength of undesired photochemistry, also known as radiation damage. However, the analysis and processing of the resulting data differs significantly from the approaches used for solution spectrophotometric data. The varying size and shape of the sample, together with the suboptimal sample environment, the lack of proper reference signals and the general influence of the X-ray beam on the sample have to be considered and carefully corrected for. In the present article, how to characterize and treat these sample-dependent artefacts in a reproducible manner is discussed and the SLS-APE in situ, in crystallo optical spectroscopy data-analysis toolbox is demonstrated.
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Affiliation(s)
| | - Michael A. Hough
- School of Biological Sciences, University of Essex, Wivenhoe Park, Colchester CO4 3SQ, England
| | - Guillaume Pompidor
- European Molecular Biology Laboratory Hamburg, c/o DESY, Notkestrasse 85, D-22603 Hamburg, Germany
| | - Martin R. Fuchs
- Photon Sciences, Brookhaven National Laboratory, Mail Stop 745, Upton, NY 11973, USA
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23
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Londergan CH, Baskin R, Bischak CG, Hoffman KW, Snead DM, Reynoso C. Dynamic Asymmetry and the Role of the Conserved Active-Site Thiol in Rabbit Muscle Creatine Kinase. Biochemistry 2014; 54:83-95. [DOI: 10.1021/bi5008063] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Casey H. Londergan
- Department of Chemistry, Haverford College, 370 Lancaster Avenue, Haverford, Pennsylvania 19041, United States
| | - Rachel Baskin
- Department of Chemistry, Haverford College, 370 Lancaster Avenue, Haverford, Pennsylvania 19041, United States
| | - Connor G. Bischak
- Department of Chemistry, Haverford College, 370 Lancaster Avenue, Haverford, Pennsylvania 19041, United States
| | - Kevin W. Hoffman
- Department of Chemistry, Haverford College, 370 Lancaster Avenue, Haverford, Pennsylvania 19041, United States
| | - David M. Snead
- Department of Chemistry, Haverford College, 370 Lancaster Avenue, Haverford, Pennsylvania 19041, United States
| | - Christopher Reynoso
- Department of Chemistry, Haverford College, 370 Lancaster Avenue, Haverford, Pennsylvania 19041, United States
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24
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Abstract
Protein conformation plays a crucial role in determining both the catalytic efficiency and the chemo-, regio- and enantioselectivity of enzymes, thus eventually influencing their exploitability in biotechnological applications. Inevitably, immobilisation processes alter the natural molecular environment of enzymes, and quite often affect their catalytic activity through different mechanisms such as reduced accessibility of the substrate to the catalytic active centre, loss of the enzyme dynamic properties and alteration of the conformational integrity of the enzyme. This tutorial review outlines first the most common spectroscopic techniques used for investigating the conformation of immobilized proteins, and then examines how protein loading and polar and hydrophobic/hydrophilic interactions with the carrier affect the structural and dynamic features of enzymes. The nanoscale-level studies in which protein conformational changes, determined either by experimental approaches or by homology modelling, are correlated with the size and shape of the support are also discussed. Altogether, these results should provide useful information on how supports and/or enzymes have to be tailored to improve biocatalyst performance.
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Affiliation(s)
- Francesco Secundo
- Istituto di Chimica del Riconoscimento Molecolare, CNR, Via Mario Bianco 9, Milano, Italy.
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25
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Saenko SV, Teyssier J, van der Marel D, Milinkovitch MC. Precise colocalization of interacting structural and pigmentary elements generates extensive color pattern variation in Phelsuma lizards. BMC Biol 2013; 11:105. [PMID: 24099066 PMCID: PMC4021644 DOI: 10.1186/1741-7007-11-105] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 10/02/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Color traits in animals play crucial roles in thermoregulation, photoprotection, camouflage, and visual communication, and are amenable to objective quantification and modeling. However, the extensive variation in non-melanic pigments and structural colors in squamate reptiles has been largely disregarded. Here, we used an integrated approach to investigate the morphological basis and physical mechanisms generating variation in color traits in tropical day geckos of the genus Phelsuma. RESULTS Combining histology, optics, mass spectrometry, and UV and Raman spectroscopy, we found that the extensive variation in color patterns within and among Phelsuma species is generated by complex interactions between, on the one hand, chromatophores containing yellow/red pteridine pigments and, on the other hand, iridophores producing structural color by constructive interference of light with guanine nanocrystals. More specifically, we show that 1) the hue of the vivid dorsolateral skin is modulated both by variation in geometry of structural, highly ordered narrowband reflectors, and by the presence of yellow pigments, and 2) that the reflectivity of the white belly and of dorsolateral pigmentary red marks, is increased by underlying structural disorganized broadband reflectors. Most importantly, these interactions require precise colocalization of yellow and red chromatophores with different types of iridophores, characterized by ordered and disordered nanocrystals, respectively. We validated these results through numerical simulations combining pigmentary components with a multilayer interferential optical model. Finally, we show that melanophores form dark lateral patterns but do not significantly contribute to variation in blue/green or red coloration, and that changes in the pH or redox state of pigments provide yet another source of color variation in squamates. CONCLUSIONS Precisely colocalized interacting pigmentary and structural elements generate extensive variation in lizard color patterns. Our results indicate the need to identify the developmental mechanisms responsible for the control of the size, shape, and orientation of nanocrystals, and the superposition of specific chromatophore types. This study opens up new perspectives on Phelsuma lizards as models in evolutionary developmental biology.
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Affiliation(s)
- Suzanne V Saenko
- Laboratory of Artificial and Natural Evolution (LANE), Department of Genetics and Evolution, University of Geneva, Sciences III, 30, Quai Ernest-Ansermet, 1211 Genève 4, Switzerland.
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26
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Praveen BB, Mazilu M, Marchington RF, Herrington CS, Riches A, Dholakia K. Optimisation of wavelength modulated Raman spectroscopy: towards high throughput cell screening. PLoS One 2013; 8:e67211. [PMID: 23825643 PMCID: PMC3692494 DOI: 10.1371/journal.pone.0067211] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Accepted: 05/16/2013] [Indexed: 12/04/2022] Open
Abstract
In the field of biomedicine, Raman spectroscopy is a powerful technique to discriminate between normal and cancerous cells. However the strong background signal from the sample and the instrumentation affects the efficiency of this discrimination technique. Wavelength Modulated Raman spectroscopy (WMRS) may suppress the background from the Raman spectra. In this study we demonstrate a systematic approach for optimizing the various parameters of WMRS to achieve a reduction in the acquisition time for potential applications such as higher throughput cell screening. The Signal to Noise Ratio (SNR) of the Raman bands depends on the modulation amplitude, time constant and total acquisition time. It was observed that the sampling rate does not influence the signal to noise ratio of the Raman bands if three or more wavelengths are sampled. With these optimised WMRS parameters, we increased the throughput in the binary classification of normal human urothelial cells and bladder cancer cells by reducing the total acquisition time to 6 s which is significantly lower in comparison to previous acquisition times required for the discrimination between similar cell types.
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Affiliation(s)
- Bavishna B Praveen
- SUPA, School of Physics and Astronomy, North Haugh, University of St Andrews, St Andrews, Fife, Scotland, United Kingdom.
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27
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Characterization and analysis of mycobacteria and Gram-negative bacteria and co-culture mixtures by Raman microspectroscopy, FTIR, and atomic force microscopy. Anal Bioanal Chem 2012. [DOI: 10.1007/s00216-012-6556-8] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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28
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Kopecky V, Kohoutova J, Lapkouski M, Hofbauerova K, Sovova Z, Ettrichova O, González-Pérez S, Dulebo A, Kaftan D, Kuta Smatanova I, Revuelta JL, Arellano JB, Carey J, Ettrich R. Raman spectroscopy adds complementary detail to the high-resolution x-ray crystal structure of photosynthetic PsbP from Spinacia oleracea. PLoS One 2012; 7:e46694. [PMID: 23071614 PMCID: PMC3465285 DOI: 10.1371/journal.pone.0046694] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2012] [Accepted: 09/07/2012] [Indexed: 11/21/2022] Open
Abstract
Raman microscopy permits structural analysis of protein crystals in situ in hanging drops, allowing for comparison with Raman measurements in solution. Nevertheless, the two methods sometimes reveal subtle differences in structure that are often ascribed to the water layer surrounding the protein. The novel method of drop-coating deposition Raman spectropscopy (DCDR) exploits an intermediate phase that, although nominally "dry," has been shown to preserve protein structural features present in solution. The potential of this new approach to bridge the structural gap between proteins in solution and in crystals is explored here with extrinsic protein PsbP of photosystem II from Spinacia oleracea. In the high-resolution (1.98 Å) x-ray crystal structure of PsbP reported here, several segments of the protein chain are present but unresolved. Analysis of the three kinds of Raman spectra of PsbP suggests that most of the subtle differences can indeed be attributed to the water envelope, which is shown here to have a similar Raman intensity in glassy and crystal states. Using molecular dynamics simulations cross-validated by Raman solution data, two unresolved segments of the PsbP crystal structure were modeled as loops, and the amino terminus was inferred to contain an additional beta segment. The complete PsbP structure was compared with that of the PsbP-like protein CyanoP, which plays a more peripheral role in photosystem II function. The comparison suggests possible interaction surfaces of PsbP with higher-plant photosystem II. This work provides the first complete structural picture of this key protein, and it represents the first systematic comparison of Raman data from solution, glassy, and crystalline states of a protein.
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Affiliation(s)
- Vladimir Kopecky
- Institute of Physics, Faculty of Mathematics and Physics, Charles University in Prague, Prague, Czech Republic
| | - Jaroslava Kohoutova
- Institute of Nanobiology and Structural Biology, Global Change Research Center, Academy of Sciences of the Czech Republic, Nové Hrady, Czech Republic
- Faculty of Fisheries and Protection of Waters, University of South Bohemia, Nové Hrady, Czech Republic
| | - Mikalai Lapkouski
- Institute of Nanobiology and Structural Biology, Global Change Research Center, Academy of Sciences of the Czech Republic, Nové Hrady, Czech Republic
| | - Katerina Hofbauerova
- Institute of Physics, Faculty of Mathematics and Physics, Charles University in Prague, Prague, Czech Republic
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Zofie Sovova
- Institute of Nanobiology and Structural Biology, Global Change Research Center, Academy of Sciences of the Czech Republic, Nové Hrady, Czech Republic
- Faculty of Sciences, University of South Bohemia, České Budějovice, Czech Republic
| | - Olga Ettrichova
- Institute of Nanobiology and Structural Biology, Global Change Research Center, Academy of Sciences of the Czech Republic, Nové Hrady, Czech Republic
| | - Sergio González-Pérez
- Departamento de Estrés Abiótico, Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), Salamanca, Spain
| | - Alexander Dulebo
- Faculty of Sciences, University of South Bohemia, České Budějovice, Czech Republic
| | - David Kaftan
- Faculty of Sciences, University of South Bohemia, České Budějovice, Czech Republic
| | - Ivana Kuta Smatanova
- Institute of Nanobiology and Structural Biology, Global Change Research Center, Academy of Sciences of the Czech Republic, Nové Hrady, Czech Republic
- Faculty of Fisheries and Protection of Waters, University of South Bohemia, Nové Hrady, Czech Republic
| | - Jose L. Revuelta
- Departamento de Microbiología y Genética, Instituto de Biología Funcional y Genómica, Universidad de Salamanca/CSIC, Campus Miguel de Unamuno, Salamanca, Spain
| | - Juan B. Arellano
- Departamento de Estrés Abiótico, Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), Salamanca, Spain
| | - Jannette Carey
- Chemistry Department, Princeton University, Princeton, New Jersey, United States of America
| | - Rüdiger Ettrich
- Institute of Nanobiology and Structural Biology, Global Change Research Center, Academy of Sciences of the Czech Republic, Nové Hrady, Czech Republic
- Faculty of Sciences, University of South Bohemia, České Budějovice, Czech Republic
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29
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Huang N, Short M, Zhao J, Wang H, Lui H, Korbelik M, Zeng H. Full range characterization of the Raman spectra of organs in a murine model. OPTICS EXPRESS 2011; 19:22892-909. [PMID: 22109167 DOI: 10.1364/oe.19.022892] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Raman spectroscopy is a minimally-invasive optical technique with great potential for in vivo cancer detection and disease diagnosis. However, there is no systematic study of the Raman spectra from different organs to date. We measured and characterized the Raman spectra eighteen naïve mouse organs in a broad frequency range of 700 to 3100 cm⁻¹. The peaks of generic proteins and lipids appeared in Raman spectra of all organs. Some organs like bone, teeth, brain and lung had unique Raman peaks. The autofluorescence was strong in liver, spleen, heart, and kidney. These results suggest that organ specific Raman probe design and specific data processing strategies are required in order to get the most useful information.
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Affiliation(s)
- Naiyan Huang
- Imaging Unit - Integrative Oncology Department, British Columbia Cancer Agency Research Centre, 675 West 10th Avenue, Vancouver V5Z 1L3, BC, Canada
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30
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Jacob CR. Theoretical Study of the Raman Optical Activity Spectra of 310-Helical Polypeptides. Chemphyschem 2011; 12:3291-306. [DOI: 10.1002/cphc.201100593] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2011] [Indexed: 11/06/2022]
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31
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Bieler NS, Haag MP, Jacob CR, Reiher M. Analysis of the Cartesian Tensor Transfer Method for Calculating Vibrational Spectra of Polypeptides. J Chem Theory Comput 2011; 7:1867-81. [DOI: 10.1021/ct2001478] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Noah S. Bieler
- ETH Zurich, Laboratorium für Physikalische Chemie, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
| | - Moritz P. Haag
- ETH Zurich, Laboratorium für Physikalische Chemie, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
| | - Christoph R. Jacob
- Karlsruhe Institute of Technology (KIT), Center for Functional Nanostructures, Wolfgang-Gaede-Str. 1a, 76131 Karlsruhe, Germany
| | - Markus Reiher
- ETH Zurich, Laboratorium für Physikalische Chemie, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
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32
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Use of Raman spectroscopy for the identification of radical-mediated damages in human serum albumin. Anal Bioanal Chem 2011; 400:2921-31. [PMID: 21494773 DOI: 10.1007/s00216-011-4970-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Revised: 03/26/2011] [Accepted: 03/28/2011] [Indexed: 01/14/2023]
Abstract
Damages induced by free radicals on human serum albumin (HSA), the most prominent protein in plasma, were investigated by Raman spectroscopy. HSA underwent oxidative and reductive radical stress. Gamma-irradiation was used to simulate the endogenous formation of reactive radical species such as hydrogen atoms ((•)H), solvated electrons (e(aq)(-)) and hydroxyl radicals ((•)OH). Raman spectroscopy was shown to be a useful tool in identifying conformational changes of the protein structure and specific damages occurring at sensitive amino acid sites. In particular, the analysis of the S-S stretching region suggested the radical species caused modifications in the 17 disulphide bridges of HSA. The concomitant action of e(aq)(-) and (•)H atoms caused the formation of cyclic disulphide bridges, showing how cystine pairs act as efficient interceptors of reducing species, by direct scavenging and electron transfer reactions within the protein. This conclusion was further confirmed by the modifications visible in the Raman bands due to Phe and Tyr residues. As regards to protein folding, both oxidative and reductive radical stresses were able to cause a loss in α-helix content, although the latter remains the most abundant secondary structure component. β-turns motifs significantly increased as a consequence of the synergic action of e(aq)(-) and (•)H atoms, whereas a larger increase in the β-sheet content was found following the exposure to (•)OH and/or (•)H attack.
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Wood BR, Stoddart PR, McNaughton D. Molecular Imaging of Red Blood Cells by Raman Spectroscopy. Aust J Chem 2011. [DOI: 10.1071/ch11136] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Raman spectroscopy allows visualization of 2D and 3D chemical distributions at high spatial resolution in a wide range of samples. It is insensitive to water, which makes it particularly attractive for applications in the biological sciences. At the same time, technical advances have allowed the laser excitation power to be reduced on thermally sensitive samples, without sacrificing acquisition times. This review highlights the analytical and diagnostic potential of Raman imaging techniques by reference to recent studies of red blood cells. In the case of red blood cells infected with low-pigmented forms of the malaria parasite, molecular images reveal sub-micron-inclusions of haemozoin, which suggests that the technique has potential for early-stage diagnosis of the disease.
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34
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Chiu LD, Hamaguchi HO. The "Raman spectroscopic signature of life" is closely related to haem function in budding yeasts. JOURNAL OF BIOPHOTONICS 2011; 4:30-33. [PMID: 20391543 DOI: 10.1002/jbio.201000029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2010] [Revised: 03/16/2010] [Accepted: 03/24/2010] [Indexed: 05/29/2023]
Abstract
HEM1 gene encodes δ-aminolevulinate synthase that is required for haem synthesis. It is an essential gene for yeast survival. The Raman spectra of HEM1 knockout (hem1Δ) yeast cells lacks a Raman band at 1602 cm(-1) that has been shown to reflect cell metabolic activity. This result suggests that the molecule giving rise to the"Raman spectroscopic signature of life" is closely related to haem functions in the cell. High amount of squalene is also observed in the hem1Δ strain, which is another new discovery of this study.
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Affiliation(s)
- Liang-da Chiu
- Department of Chemistry, the University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033 Japan
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35
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Carpentier P, Royant A, Weik M, Bourgeois D. Raman-Assisted Crystallography Suggests a Mechanism of X-Ray-Induced Disulfide Radical Formation and Reparation. Structure 2010; 18:1410-9. [DOI: 10.1016/j.str.2010.09.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2010] [Revised: 08/27/2010] [Accepted: 09/23/2010] [Indexed: 11/24/2022]
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36
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Raman-assisted crystallography of biomolecules at the synchrotron: instrumentation, methods and applications. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2010; 1814:750-9. [PMID: 20691814 DOI: 10.1016/j.bbapap.2010.07.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2010] [Revised: 07/25/2010] [Accepted: 07/28/2010] [Indexed: 11/23/2022]
Abstract
Raman spectroscopy is a powerful technique that, in recent years, has been successfully coupled to X-ray crystallography for the analysis of biological macromolecular systems. The complementarity between both techniques is illustrated at multiple stages, including sample preparation, data collection and structural interpretation with a mechanistic perspective. The current state of instrumentation is described, focusing on synchrotron based setups. Present and future applications of Raman microspectrophotometry are reviewed with reference to recent examples dealing with metallo-, photosensitive-, and redox-proteins. The added value of Raman microspectrophotometry to assess X-radiation damage is discussed, and its applicability to investigate crystalline DNA molecules is also emphasized. This article is part of a Special Issue entitled: Protein Structure and Function in the Crystalline State.
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Weymuth T, Jacob CR, Reiher M. A Local-Mode Model for Understanding the Dependence of the Extended Amide III Vibrations on Protein Secondary Structure. J Phys Chem B 2010; 114:10649-60. [DOI: 10.1021/jp104542w] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thomas Weymuth
- ETH Zurich, Laboratorium für Physikalische Chemie, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland, and Karlsruhe Institute of Technology (KIT), Center for Functional Nanostructures, Wolfgang-Gaede-Str. 1a, 76131 Karlsruhe, Germany
| | - Christoph R. Jacob
- ETH Zurich, Laboratorium für Physikalische Chemie, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland, and Karlsruhe Institute of Technology (KIT), Center for Functional Nanostructures, Wolfgang-Gaede-Str. 1a, 76131 Karlsruhe, Germany
| | - Markus Reiher
- ETH Zurich, Laboratorium für Physikalische Chemie, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland, and Karlsruhe Institute of Technology (KIT), Center for Functional Nanostructures, Wolfgang-Gaede-Str. 1a, 76131 Karlsruhe, Germany
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38
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McEwen GD, Wu Y, Zhou A. Probing nanostructures of bacterial extracellular polymeric substances versus culture time by Raman microspectroscopy and atomic force microscopy. Biopolymers 2010; 93:171-7. [PMID: 19787720 DOI: 10.1002/bip.21315] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The structure of a bacterial cell wall may alter during bacterial reproduction. Moreover, these cell wall variations, on a nanoscale resolution, have not yet fully been elucidated. In this work, Raman spectroscopy and atomic force microscopy (AFM) technique are applied to evaluate the culture time-dependent cell wall structure variations of Pseudomonas putida KT2440 at a quorum and single cell level. The Raman spectra indicate that the appearance of DNA/RNA, protein, lipid, and carbohydrates occurs till 6 h of cultivation time under our experimental conditions. AFM characterization reveals the changes of the cellular surface ultrastructures over the culture time period, which is a gradual increase in surface roughness during the time between the first two and eight hours cultivation time. This work demonstrates the feasibility of utilizing a combined Raman spectroscopy and AFM technique to investigate the cultivation time dependence of bacterial cellular surface biopolymers at single cell level.
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Affiliation(s)
- Gerald D McEwen
- Biological Engineering Program, College of Engineering, 4105 Old Main Hill, Utah State University, Logan, UT 84322-4105, USA
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39
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Huang WE, Li M, Jarvis RM, Goodacre R, Banwart SA. Shining light on the microbial world the application of Raman microspectroscopy. ADVANCES IN APPLIED MICROBIOLOGY 2010; 70:153-86. [PMID: 20359457 DOI: 10.1016/s0065-2164(10)70005-8] [Citation(s) in RCA: 135] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Raman microspectroscopy is a noninvasive, label-free, and single-cell technology for biochemical analysis of individual mammalian cells, organelles, bacteria, viruses, and nanoparticles. Chemical information derived from a Raman spectrum provides comprehensive and intrinsic information (e.g., nucleic acids, protein, carbohydrates, and lipids) of single cells without the need of any external labeling. A Raman spectrum functions as a molecular "fingerprint" of single cells, which enables the differentiation of cell types, physiological states, nutrient condition, and variable phenotypes. Raman microspectroscopy combined with stable isotope probing, fluorescent in situ hybridization, and optical tweezers offers a culture-independent approach to study the functions and physiology of unculturable microorganisms in the ecosystem. Here, we review the application of Raman microspectroscopy to microbiology research with particular emphasis on single bacterial cells.
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Affiliation(s)
- Wei E Huang
- Department of Civil and Structural Engineering, Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom.
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40
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Jacob C, Luber S, Reiher M. Understanding the Signatures of Secondary-Structure Elements in Proteins with Raman Optical Activity Spectroscopy. Chemistry 2009; 15:13491-508. [DOI: 10.1002/chem.200901840] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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41
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Jacob CR, Luber S, Reiher M. Analysis of Secondary Structure Effects on the IR and Raman Spectra of Polypeptides in Terms of Localized Vibrations. J Phys Chem B 2009; 113:6558-73. [DOI: 10.1021/jp900354g] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christoph R. Jacob
- ETH Zurich, Laboratorium für Physikalische Chemie, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
| | - Sandra Luber
- ETH Zurich, Laboratorium für Physikalische Chemie, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
| | - Markus Reiher
- ETH Zurich, Laboratorium für Physikalische Chemie, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
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42
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Moody B, McCarty GS. Solid state nanogaps for differential measurements of molecular properties. APPLIED PHYSICS LETTERS 2009; 94:122104. [PMID: 23696694 PMCID: PMC3645910 DOI: 10.1063/1.3103616] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2009] [Accepted: 02/27/2009] [Indexed: 05/31/2023]
Abstract
This paper demonstrates the production and probing of solid state nanogaps. These nanogaps can be inexpensively and controllably produced using a combination of molecular and standard photolithography. These nanogaps are implemented for chemical monitoring by using surface enhanced Raman spectroscopy to collect molecular information at the nanogap and current-voltage traces to probe the charge transport of the nanogap. These data show that the oligonucleotides used as the molecular resist are degraded, that some of the degraded oligonucleotides are removed, and then new oligonucleotides are adsorbed.
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Affiliation(s)
- Benjamin Moody
- North Carolina State University, 2147 Burlington Labs, Raleigh, North Carolina 27695, USA
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43
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Combining X-ray crystallography and single-crystal spectroscopy to probe enzyme mechanisms. Biochem Soc Trans 2009; 37:378-81. [DOI: 10.1042/bst0370378] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The combination of X-ray crystallography and rapid cryo-trapping methods has enabled the visualization of catalytic intermediates in a variety of enzyme systems. However, the resolution of the X-ray experiment is not always sufficient to precisely place the structure on the reaction pathway. In addition, many trapped intermediates are X-ray-sensitive and can decay during diffraction data collection, resulting in a final structure that may not be representative of the initial trapped species. Complementary methods, such as single-crystal spectroscopy, provide a means to precisely identify the cryo-trapped species as well as detect any X-ray-induced changes during diffraction data collection.
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44
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Chowdhry BZ, Dines TJ, Jabeen S, Withnall R. Vibrational Spectra of α-Amino Acids in the Zwitterionic State in Aqueous Solution and the Solid State: DFT Calculations and the Influence of Hydrogen Bonding. J Phys Chem A 2008; 112:10333-47. [DOI: 10.1021/jp8037945] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Babur Z. Chowdhry
- School of Science, University of Greenwich at Medway, Central Avenue, Chatham Maritime, Kent ME4 4TB, United Kingdom, Division of Electronic Engineering and Physics, University of Dundee, Dundee, DD1 4HN, United Kingdom and Wolfson Centre for Materials Processing, Brunel University, Uxbridge, Middlesex, UB8 3PH, United Kingdom
| | - Trevor J. Dines
- School of Science, University of Greenwich at Medway, Central Avenue, Chatham Maritime, Kent ME4 4TB, United Kingdom, Division of Electronic Engineering and Physics, University of Dundee, Dundee, DD1 4HN, United Kingdom and Wolfson Centre for Materials Processing, Brunel University, Uxbridge, Middlesex, UB8 3PH, United Kingdom
| | - Saima Jabeen
- School of Science, University of Greenwich at Medway, Central Avenue, Chatham Maritime, Kent ME4 4TB, United Kingdom, Division of Electronic Engineering and Physics, University of Dundee, Dundee, DD1 4HN, United Kingdom and Wolfson Centre for Materials Processing, Brunel University, Uxbridge, Middlesex, UB8 3PH, United Kingdom
| | - Robert Withnall
- School of Science, University of Greenwich at Medway, Central Avenue, Chatham Maritime, Kent ME4 4TB, United Kingdom, Division of Electronic Engineering and Physics, University of Dundee, Dundee, DD1 4HN, United Kingdom and Wolfson Centre for Materials Processing, Brunel University, Uxbridge, Middlesex, UB8 3PH, United Kingdom
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46
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Harz M, Krause M, Bartels T, Cramer K, Rösch P, Popp J. Minimal Invasive Gender Determination of Birds by Means of UV-Resonance Raman Spectroscopy. Anal Chem 2008; 80:1080-6. [DOI: 10.1021/ac702043q] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. Harz
- Institut für Physikalische Chemie, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, 07743 Jena, Germany, Klinik für Vögel und Reptilien, Universität Leipzig, An den Tierkliniken 17, 04103 Leipzig, Germany, and Institut für Photonische Technologien, Albert-Einstein-Strasse 9, 07745 Jena, Germany
| | - M. Krause
- Institut für Physikalische Chemie, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, 07743 Jena, Germany, Klinik für Vögel und Reptilien, Universität Leipzig, An den Tierkliniken 17, 04103 Leipzig, Germany, and Institut für Photonische Technologien, Albert-Einstein-Strasse 9, 07745 Jena, Germany
| | - T. Bartels
- Institut für Physikalische Chemie, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, 07743 Jena, Germany, Klinik für Vögel und Reptilien, Universität Leipzig, An den Tierkliniken 17, 04103 Leipzig, Germany, and Institut für Photonische Technologien, Albert-Einstein-Strasse 9, 07745 Jena, Germany
| | - K. Cramer
- Institut für Physikalische Chemie, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, 07743 Jena, Germany, Klinik für Vögel und Reptilien, Universität Leipzig, An den Tierkliniken 17, 04103 Leipzig, Germany, and Institut für Photonische Technologien, Albert-Einstein-Strasse 9, 07745 Jena, Germany
| | - P. Rösch
- Institut für Physikalische Chemie, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, 07743 Jena, Germany, Klinik für Vögel und Reptilien, Universität Leipzig, An den Tierkliniken 17, 04103 Leipzig, Germany, and Institut für Photonische Technologien, Albert-Einstein-Strasse 9, 07745 Jena, Germany
| | - J. Popp
- Institut für Physikalische Chemie, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, 07743 Jena, Germany, Klinik für Vögel und Reptilien, Universität Leipzig, An den Tierkliniken 17, 04103 Leipzig, Germany, and Institut für Photonische Technologien, Albert-Einstein-Strasse 9, 07745 Jena, Germany
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47
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Jarvis RM, Goodacre R. Characterisation and identification of bacteria using SERS. Chem Soc Rev 2008; 37:931-6. [DOI: 10.1039/b705973f] [Citation(s) in RCA: 301] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Barth A. Infrared spectroscopy of proteins. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2007; 1767:1073-101. [PMID: 17692815 DOI: 10.1016/j.bbabio.2007.06.004] [Citation(s) in RCA: 2820] [Impact Index Per Article: 165.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2007] [Revised: 06/18/2007] [Accepted: 06/19/2007] [Indexed: 12/12/2022]
Abstract
This review discusses the application of infrared spectroscopy to the study of proteins. The focus is on the mid-infrared spectral region and the study of protein reactions by reaction-induced infrared difference spectroscopy.
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Affiliation(s)
- Andreas Barth
- Department of Biochemistry and Biophysics, The Arrhenius Laboratories for Natural Sciences, Stockholm University, S-106 91 Stockholm, Sweden.
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49
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Ortiz C, Zhang D, Ribbe AE, Xie Y, Ben-Amotz D. Analysis of insulin amyloid fibrils by Raman spectroscopy. Biophys Chem 2007; 128:150-5. [PMID: 17451866 DOI: 10.1016/j.bpc.2007.03.012] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2007] [Accepted: 03/24/2007] [Indexed: 11/16/2022]
Abstract
The formation of amyloid fibrils from insulin is investigated using drop-coating-deposition-Raman (DCDR) difference spectroscopy and atomic force microscopy (AFM). Fibrils formed using various co-solvents and heating cycles are found to induce the appearance of Raman difference peaks in the amide I (approximately 1675 cm(-1)), amide III (approximately 1220 cm(-1)), and peptide backbone (approximately 1010 cm(-1)), consistent with an increase in beta-sheet content. Comparisons of results obtained from fibrils in either H2O or D2O suggest that the NH/ND stretch bands (at approximately 3300 cm(-1)/ approximately 2400 cm(-1)) are also enhanced in intensity upon fibril formation. If there is any water trapped in the core of the fibrils its OH/OD Raman intensity is too small to be detected in the presence of the stronger NH/ND bands which appear in the same region. AFM is used to confirm the formation of fibrils of about 5 nm diameter (and various lengths).
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Affiliation(s)
- Corasi Ortiz
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
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50
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Marques MPM, Batista de Carvalho LAE. Vibrational spectroscopy studies on linear polyamines. Biochem Soc Trans 2007; 35:374-80. [PMID: 17371281 DOI: 10.1042/bst0350374] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Vibrational spectroscopy [both Raman and INS (inelastic neutron scattering)], coupled to quantum mechanical calculations, was used in order to perform a thorough structural analysis of linear polyamines and polynuclear polyamine metal chelates [e.g. with Pt(II) and Pd(II)] with potential anticancer activity. The complementarity of the Raman and INS spectroscopies was exploited in order to gain a better knowledge of the conformational behaviour of these systems. Moreover, the conjugation of the experimental spectroscopic data to the theoretical results allows us to obtain valuable information on the structural preferences of this kind of system, which may lead to the establishment of SARs (structure–activity relationships) ruling their biological activity. Some of the most significant results obtained by the ‘Molecular Physical-Chemistry’ Research Group of the University of Coimbra (Portugal) are reviewed here.
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Affiliation(s)
- M P M Marques
- Research Unit Molecular Physical-Chemistry, University of Coimbra, 3000 Coimbra, Portugal.
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