1
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Pajić T, Todorović NV, Živić M, Nikolić SN, Rabasović MD, Clayton AHA, Krmpot AJ. Label-free third harmonic generation imaging and quantification of lipid droplets in live filamentous fungi. Sci Rep 2022; 12:18760. [PMID: 36335164 PMCID: PMC9637149 DOI: 10.1038/s41598-022-23502-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 11/01/2022] [Indexed: 11/07/2022] Open
Abstract
We report the utilization of Third-Harmonic Generation microscopy for label-free live cell imaging of lipid droplets in the hypha of filamentous fungus Phycomyces blakesleeanus. THG microscopy images showed bright spherical features dispersed throughout the hypha cytoplasm in control conditions and a transient increase in the number of bright features after complete nitrogen starvation. Colocalization analysis of THG and lipid-counterstained images disclosed that the cytoplasmic particles were lipid droplets. Particle Size Analysis and Image Correlation Spectroscopy were used to quantify the number density and size of lipid droplets. The two analysis methods both revealed an increase from 16 × 10-3 to 23 × 10-3 lipid droplets/µm2 after nitrogen starvation and a decrease in the average size of the droplets (range: 0.5-0.8 µm diameter). In conclusion, THG imaging, followed by PSA and ICS, can be reliably used for filamentous fungi for the in vivo quantification of lipid droplets without the need for labeling and/or fixation. In addition, it has been demonstrated that ICS is suitable for THG microscopy.
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Affiliation(s)
- Tanja Pajić
- grid.7149.b0000 0001 2166 9385Faculty of Biology, Institute of Physiology and Biochemistry, University of Belgrade, Studentski trg 16, Belgrade, 11158 Serbia
| | - Nataša V. Todorović
- grid.7149.b0000 0001 2166 9385Institute for Biological Research “Siniša Stanković”, University of Belgrade, National Institute of the Republic of Serbia, Bulevar Despota Stefana 142, Belgrade, 11000 Serbia
| | - Miroslav Živić
- grid.7149.b0000 0001 2166 9385Faculty of Biology, Institute of Physiology and Biochemistry, University of Belgrade, Studentski trg 16, Belgrade, 11158 Serbia
| | - Stanko N. Nikolić
- grid.7149.b0000 0001 2166 9385Institute of Physics Belgrade, University of Belgrade, National Institute of the Republic of Serbia, Pregrevica 118, Belgrade, 11080 Serbia
| | - Mihailo D. Rabasović
- grid.7149.b0000 0001 2166 9385Institute of Physics Belgrade, University of Belgrade, National Institute of the Republic of Serbia, Pregrevica 118, Belgrade, 11080 Serbia
| | - Andrew H. A. Clayton
- grid.1027.40000 0004 0409 2862Department of Physics and Astronomy, Optical Sciences Centre, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Melbourne, VIC 3122 Australia
| | - Aleksandar J. Krmpot
- grid.7149.b0000 0001 2166 9385Institute of Physics Belgrade, University of Belgrade, National Institute of the Republic of Serbia, Pregrevica 118, Belgrade, 11080 Serbia
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2
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Wu W, Liu Q, Brandt C, Tang S. Dual-wavelength multimodal multiphoton microscope with SMA-based depth scanning. BIOMEDICAL OPTICS EXPRESS 2022; 13:2754-2771. [PMID: 35774327 PMCID: PMC9203102 DOI: 10.1364/boe.456390] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/19/2022] [Accepted: 03/31/2022] [Indexed: 06/15/2023]
Abstract
We report on a multimodal multiphoton microscopy (MPM) system with depth scanning. The multimodal capability is realized by an Er-doped femtosecond fiber laser with dual output wavelengths of 1580 nm and 790 nm that are responsible for three-photon and two-photon excitation, respectively. A shape-memory-alloy (SMA) actuated miniaturized objective enables the depth scanning capability. Image stacks combined with two-photon excitation fluorescence (TPEF), second harmonic generation (SHG), and third harmonic generation (THG) signals have been acquired from animal, fungus, and plant tissue samples with a maximum depth range over 200 µm.
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Affiliation(s)
- Wentao Wu
- Department of Electrical and Computer Engineering, University of British Columbia, 5500-2332 Main Mall, Vancouver, BC V6 T 1Z4, Canada
| | - Qihao Liu
- Department of Electrical and Computer Engineering, University of British Columbia, 5500-2332 Main Mall, Vancouver, BC V6 T 1Z4, Canada
| | - Christoph Brandt
- Department of Electrical and Computer Engineering, University of British Columbia, 5500-2332 Main Mall, Vancouver, BC V6 T 1Z4, Canada
| | - Shuo Tang
- Department of Electrical and Computer Engineering, University of British Columbia, 5500-2332 Main Mall, Vancouver, BC V6 T 1Z4, Canada
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3
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Khoshravesh R, Hoffmann N, Hanson DT. Leaf microscopy applications in photosynthesis research: identifying the gaps. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:1868-1893. [PMID: 34986250 DOI: 10.1093/jxb/erab548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 12/10/2021] [Indexed: 06/14/2023]
Abstract
Leaf imaging via microscopy has provided critical insights into research on photosynthesis at multiple junctures, from the early understanding of the role of stomata, through elucidating C4 photosynthesis via Kranz anatomy and chloroplast arrangement in single cells, to detailed explorations of diffusion pathways and light utilization gradients within leaves. In recent decades, the original two-dimensional (2D) explorations have begun to be visualized in three-dimensional (3D) space, revising our understanding of structure-function relationships between internal leaf anatomy and photosynthesis. In particular, advancing new technologies and analyses are providing fresh insight into the relationship between leaf cellular components and improving the ability to model net carbon fixation, water use efficiency, and metabolite turnover rate in leaves. While ground-breaking developments in imaging tools and techniques have expanded our knowledge of leaf 3D structure via high-resolution 3D and time-series images, there is a growing need for more in vivo imaging as well as metabolite imaging. However, these advances necessitate further improvement in microscopy sciences to overcome the unique challenges a green leaf poses. In this review, we discuss the available tools, techniques, challenges, and gaps for efficient in vivo leaf 3D imaging, as well as innovations to overcome these difficulties.
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Affiliation(s)
| | - Natalie Hoffmann
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
| | - David T Hanson
- Department of Biology, University of New Mexico, Albuquerque, NM, USA
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4
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Dmitriev RI, Intes X, Barroso MM. Luminescence lifetime imaging of three-dimensional biological objects. J Cell Sci 2021; 134:1-17. [PMID: 33961054 PMCID: PMC8126452 DOI: 10.1242/jcs.254763] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
A major focus of current biological studies is to fill the knowledge gaps between cell, tissue and organism scales. To this end, a wide array of contemporary optical analytical tools enable multiparameter quantitative imaging of live and fixed cells, three-dimensional (3D) systems, tissues, organs and organisms in the context of their complex spatiotemporal biological and molecular features. In particular, the modalities of luminescence lifetime imaging, comprising fluorescence lifetime imaging (FLI) and phosphorescence lifetime imaging microscopy (PLIM), in synergy with Förster resonance energy transfer (FRET) assays, provide a wealth of information. On the application side, the luminescence lifetime of endogenous molecules inside cells and tissues, overexpressed fluorescent protein fusion biosensor constructs or probes delivered externally provide molecular insights at multiple scales into protein-protein interaction networks, cellular metabolism, dynamics of molecular oxygen and hypoxia, physiologically important ions, and other physical and physiological parameters. Luminescence lifetime imaging offers a unique window into the physiological and structural environment of cells and tissues, enabling a new level of functional and molecular analysis in addition to providing 3D spatially resolved and longitudinal measurements that can range from microscopic to macroscopic scale. We provide an overview of luminescence lifetime imaging and summarize key biological applications from cells and tissues to organisms.
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Affiliation(s)
- Ruslan I. Dmitriev
- Tissue Engineering and Biomaterials Group, Department of
Human Structure and Repair, Faculty of Medicine and Health Sciences,
Ghent University, Ghent 9000,
Belgium
| | - Xavier Intes
- Department of Biomedical Engineering, Center for
Modeling, Simulation and Imaging for Medicine (CeMSIM),
Rensselaer Polytechnic Institute, Troy, NY
12180-3590, USA
| | - Margarida M. Barroso
- Department of Molecular and Cellular
Physiology, Albany Medical College,
Albany, NY 12208, USA
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5
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Purvis K, Brittain K, Joseph A, Cisek R, Tokarz D. Third-order nonlinear optical properties of phycobiliproteins from cyanobacteria and red algae. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.136599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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6
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Alizadeh M, Ghotbi M, Loza-Alvarez P, Merino D. Comparison of Different Polarization Sensitive Second Harmonic Generation Imaging Techniques. Methods Protoc 2019; 2:E49. [PMID: 31181703 PMCID: PMC6632172 DOI: 10.3390/mps2020049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 06/03/2019] [Accepted: 06/05/2019] [Indexed: 11/16/2022] Open
Abstract
Polarization sensitive second harmonic generation (pSHG) microscopy is an imaging technique able to provide, in a non-invasive manner, information related to the molecular structure of second harmonic generation (SHG) active structures, many of which are commonly found in biological tissue. The process of acquiring this information by means of pSHG microscopy requires a scan of the sample using different polarizations of the excitation beam. This process can take considerable time in comparison with the dynamics of in vivo processes. Fortunately, single scan polarization sensitive second harmonic generation (SS-pSHG) microscopy has also been reported, and is able to generate the same information at a faster speed compared to pSHG. In this paper, the orientation of second harmonic active supramolecular assemblies in starch granules is obtained on by means of pSHG and SS-pSHG. These results are compared in the forward and backward directions, showing a good agreement in both techniques. This paper shows for the first time, to the best of the authors' knowledge, data acquired using both techniques over the exact same sample and image plane, so that they can be compared pixel-to-pixel.
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Affiliation(s)
- Mehdi Alizadeh
- Department of Physics, University of Kurdistan, Sanandaj 66177-15175, Iran.
| | - Masood Ghotbi
- Department of Physics, University of Kurdistan, Sanandaj 66177-15175, Iran.
| | - Pablo Loza-Alvarez
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Barcelona, Spain.
| | - David Merino
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Barcelona, Spain.
- UOC, Universitat Oberta de Catalunya, 08018 Barcelona, Spain.
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7
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Karakas A, Ceylan Y, Karakaya M, Taser M, Terlemez BB, Eren N, Kouari YE, Lougdali M, Arof AK, Sahraoui B. Theoretical Diagnostics of Second and Third-order Hyperpolarizabilities of Several Acid Derivatives. OPEN CHEM 2019. [DOI: 10.1515/chem-2019-0020] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractThe density functional theory (DFT) at B3LYP/6-31G(d) level has been utilized to achieve the electric dipole moment $\left( \mu \right),$static dipole polarizability $\left( \alpha \right)$and first hyperpolarizability $\left( \beta \right)$values for ferulic acid (1) and chenodeoxycholic acid (2). The time-dependent Hartree-Fock (TDHF) technique as a powerful quantum chemical method has been implemented to reveal the dynamic $\alpha ,\,\beta $and third-order hyperpolarizabilities $\left( \gamma \right)$of the examined compounds. Our computational conclusions have been compared with the results of similar materials in the literature. The first and second frontier molecular orbitals (MOs) and their band gaps have also been investigated by means of DFT.
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Affiliation(s)
- A. Karakas
- Selcuk University, Faculty of Sciences, Department of Physics, Campus, Konya, Turkey
| | - Y. Ceylan
- Selcuk University, Faculty of Sciences, Department of Physics, Campus, Konya, Turkey
| | - M. Karakaya
- Department of Energy Systems, Faculty of Engineering & Architecture, Sinop University, Sinop57000, Turkey
| | - M. Taser
- University Hassan II of Casablanca, CasablancaMorocco
| | - B. B. Terlemez
- Selcuk University, Faculty of Sciences, Department of Physics, Campus, Konya, Turkey
| | - N. Eren
- Selcuk University, Faculty of Sciences, Department of Physics, Campus, Konya, Turkey
| | - Y. El Kouari
- University Hassan II of Casablanca, CasablancaMorocco
| | - M. Lougdali
- University Hassan II of Casablanca, CasablancaMorocco
| | - A. K. Arof
- Centre for Ionics University of Malaya, Physics Department, University of Malaya, 50603Kuala LumpurMalaysia
| | - B. Sahraoui
- LUNAM Université, Université d’Angers, CNRS UMR 6200, Laboratoire MOLTECH-Anjou, 2 Bd Lavoisier, 49045 Angers Cedex, France
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8
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Cisek R, Tokarz D, Kontenis L, Barzda V, Steup M. Polarimetric second harmonic generation microscopy: An analytical tool for starch bioengineering. STARCH-STARKE 2017. [DOI: 10.1002/star.201700031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Richard Cisek
- Department of Physics; University of Toronto; Toronto Ontario Canada
- Department of Chemical and Physical Sciences; University of Toronto Mississauga; Mississauga Ontario Canada
| | - Danielle Tokarz
- Wellman Center for Photomedicine, Massachusetts General Hospital; Harvard Medical School; Boston MA USA
| | - Lukas Kontenis
- Department of Physics; University of Toronto; Toronto Ontario Canada
- Department of Chemical and Physical Sciences; University of Toronto Mississauga; Mississauga Ontario Canada
| | - Virginijus Barzda
- Department of Physics; University of Toronto; Toronto Ontario Canada
- Department of Chemical and Physical Sciences; University of Toronto Mississauga; Mississauga Ontario Canada
| | - Martin Steup
- Department of Plant Physiology, Institute of Biochemistry and Biology; University of Potsdam; Potsdam Germany
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9
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Menon VV, Foto E, Mary YS, Karatas E, Panicker CY, Yalcin G, Armaković S, Armaković SJ, Van Alsenoy C, Yildiz I. Vibrational spectroscopic analysis, molecular dynamics simulations and molecular docking study of 5-nitro-2-phenoxymethyl benzimidazole. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.09.059] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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10
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FT-IR, FT-Raman and NMR characterization of 2-isopropyl-5-methylcyclohexyl quinoline-2-carboxylate and investigation of its reactive and optoelectronic properties by molecular dynamics simulations and DFT calculations. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.07.096] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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Mary YS, Alzoman NZ, Menon VV, Al-Abdullah ES, El-Emam AA, Panicker CY, Temiz-Arpaci O, Armaković S, Armaković SJ, Van Alsenoy C. Reactive, spectroscopic and antimicrobial assessments of 5-[(4-methylphenyl) acetamido]-2-(4-tert-butylphenyl)benzoxazole: Combined experimental and computational study. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.09.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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Psilodimitrakopoulos S, Gavgiotaki E, Melessanaki K, Tsafas V, Filippidis G. Polarization Second Harmonic Generation Discriminates Between Fresh and Aged Starch-Based Adhesives Used in Cultural Heritage. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2016; 22:1072-1083. [PMID: 27619334 DOI: 10.1017/s1431927616011570] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
In this work, we report that polarization second harmonic generation (PSHG) microscopy, commonly used in biomedical imaging, can quantitatively discriminate naturally aged from fresh starch-based glues used for conservation or restoration of paintings, works of art on paper, and books. Several samples of fresh and aged (7 years) flour and starch pastes were investigated by use of PSHG. In these types of adhesives, widely used in cultural heritage conservation, second harmonic generation (SHG) contrast originates primarily from the starch granules. It was found that in aged glues, the starch SHG effective orientation (SHG angle, θ) shifts to significantly higher values in comparison to the fresh granules. This shift is attributed to the different degree of granule hydration between fresh and aged adhesives. Thus noninvasive high-resolution nonlinear scattering can be employed to detect and quantify the degree of deterioration of restoration adhesives and to provide guidance toward future conservation treatments.
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Affiliation(s)
- Sotiris Psilodimitrakopoulos
- 1Institute of Electronic Structure and Laser (IESL),Foundation for Research and Technology Hellas (FORTH),100 N. Plastira Street,71110 Heraklion,Crete,Greece
| | - Evaggelia Gavgiotaki
- 1Institute of Electronic Structure and Laser (IESL),Foundation for Research and Technology Hellas (FORTH),100 N. Plastira Street,71110 Heraklion,Crete,Greece
| | - Kristallia Melessanaki
- 1Institute of Electronic Structure and Laser (IESL),Foundation for Research and Technology Hellas (FORTH),100 N. Plastira Street,71110 Heraklion,Crete,Greece
| | - Vassilis Tsafas
- 1Institute of Electronic Structure and Laser (IESL),Foundation for Research and Technology Hellas (FORTH),100 N. Plastira Street,71110 Heraklion,Crete,Greece
| | - George Filippidis
- 1Institute of Electronic Structure and Laser (IESL),Foundation for Research and Technology Hellas (FORTH),100 N. Plastira Street,71110 Heraklion,Crete,Greece
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13
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Cui L, Tokarz D, Cisek R, Ng KK, Wang F, Chen J, Barzda V, Zheng G. Organized Aggregation of Porphyrins in Lipid Bilayers for Third Harmonic Generation Microscopy. Angew Chem Int Ed Engl 2015; 54:13928-32. [PMID: 26418395 DOI: 10.1002/anie.201506171] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Revised: 08/28/2015] [Indexed: 11/07/2022]
Abstract
Nonlinear optical microscopy has become a powerful tool for high-resolution imaging of cellular and subcellular composition, morphology, and interactions because of its high spatial resolution, deep penetration, and low photo-damage to tissue. Developing specific harmonic probes is essential for exploiting nonlinear microscopic imaging for biomedical applications. We report an organized aggregate of porphyrins (OAP) that formed within lipidic nanoparticles showing fingerprint spectroscopic properties, structure-associated second harmonic generation, and superradiant third harmonic generation. The OAP facilitated harmonic microscopic imaging of living cells with significantly enhanced contrast. The structure-dependent switch between harmonic (OAP-intact) and fluorescence (OAP-disrupted) generation enabled real-time multi-modality imaging of the cellular fate of nanoparticles. Robustly produced under various conditions and easily incorporated into pre-formed lipid nanovesicles, OAP provides a biocompatible nanoplatform for harmonic imaging.
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Affiliation(s)
- Liyang Cui
- Princess Margaret Cancer Center and Techna Institute, UHN (Canada) http://www.utoronto.ca/zhenglab.,Medical Isotopes Research Center, Peking University (China).,Department of Medical Biophysics, University of Toronto (Canada)
| | - Danielle Tokarz
- Department of Chemical and Physical Sciences and Department of Physics, University of Toronto (Canada)
| | - Richard Cisek
- Department of Chemical and Physical Sciences and Department of Physics, University of Toronto (Canada)
| | - Kenneth K Ng
- Princess Margaret Cancer Center and Techna Institute, UHN (Canada) http://www.utoronto.ca/zhenglab
| | - Fan Wang
- Medical Isotopes Research Center, Peking University (China)
| | - Juan Chen
- Princess Margaret Cancer Center and Techna Institute, UHN (Canada) http://www.utoronto.ca/zhenglab
| | - Virginijus Barzda
- Department of Chemical and Physical Sciences and Department of Physics, University of Toronto (Canada)
| | - Gang Zheng
- Princess Margaret Cancer Center and Techna Institute, UHN (Canada) http://www.utoronto.ca/zhenglab. .,Department of Medical Biophysics, University of Toronto (Canada).
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14
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Cui L, Tokarz D, Cisek R, Ng KK, Wang F, Chen J, Barzda V, Zheng G. Organized Aggregation of Porphyrins in Lipid Bilayers for Third Harmonic Generation Microscopy. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506171] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Liyang Cui
- Princess Margaret Cancer Center and Techna Institute, UHN (Canada) http://www.utoronto.ca/zhenglab
- Medical Isotopes Research Center, Peking University (China)
- Department of Medical Biophysics, University of Toronto (Canada)
| | - Danielle Tokarz
- Department of Chemical and Physical Sciences and Department of Physics, University of Toronto (Canada)
| | - Richard Cisek
- Department of Chemical and Physical Sciences and Department of Physics, University of Toronto (Canada)
| | - Kenneth K. Ng
- Princess Margaret Cancer Center and Techna Institute, UHN (Canada) http://www.utoronto.ca/zhenglab
| | - Fan Wang
- Medical Isotopes Research Center, Peking University (China)
| | - Juan Chen
- Princess Margaret Cancer Center and Techna Institute, UHN (Canada) http://www.utoronto.ca/zhenglab
| | - Virginijus Barzda
- Department of Chemical and Physical Sciences and Department of Physics, University of Toronto (Canada)
| | - Gang Zheng
- Princess Margaret Cancer Center and Techna Institute, UHN (Canada) http://www.utoronto.ca/zhenglab
- Department of Medical Biophysics, University of Toronto (Canada)
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15
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Ulahannan RT, Panicker CY, Varghese HT, Musiol R, Jampilek J, Van Alsenoy C, War JA, Srivastava SK. Molecular structure, FT-IR, FT-Raman, NBO, HOMO and LUMO, MEP, NLO and molecular docking study of 2-[(E)-2-(2-bromophenyl)ethenyl]quinoline-6-carboxylic acid. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 151:184-197. [PMID: 26142173 DOI: 10.1016/j.saa.2015.06.077] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 06/20/2015] [Accepted: 06/22/2015] [Indexed: 06/04/2023]
Abstract
The optimized molecular structure, vibrational frequencies, corresponding vibrational assignments of 2-[(E)-2-(2-bromophenyl)ethenyl]quinoline-6-carboxylic acid have been investigated experimentally and theoretically using Gaussian09 software package. Potential energy distribution of the normal modes of vibrations was done using GAR2PED program. (1)H NMR chemical shifts calculations were carried out by using B3LYP functional with SDD basis set. The HOMO and LUMO analysis is used to determine the charge transfer within the molecule. The stability of the molecule arising from hyper-conjugative interaction and charge delocalization has been analyzed using NBO analysis. MEP was performed by the DFT method and the predicted infrared intensities and Raman activities have also been reported. The calculated geometrical parameters are in agreement with that of similar derivatives. The title compound forms a stable complex with PknB as is evident from the binding affinity values and the molecular docking results suggest that the compound might exhibit inhibitory activity against PknB and this may result in development of new anti-tuberculostic agents.
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Affiliation(s)
- Rajeev T Ulahannan
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India
| | - C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India.
| | | | - Robert Musiol
- Institute of Chemistry, University of Silesia, Szkolna 9, 40007 Katowice, Poland
| | - Josef Jampilek
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1/3, 61242 Brno, Czech Republic
| | - Christian Van Alsenoy
- University of Antwerp, Chemistry Department, Universiteitsplein 1, B2610 Antwerp, Belgium
| | - Javeed Ahmad War
- Department of Chemistry, Dr. H.S. Gour Central University, Sagar, M.P. 470003, India
| | - S K Srivastava
- Department of Chemistry, Dr. H.S. Gour Central University, Sagar, M.P. 470003, India
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16
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van Oort B, van Grondelle R, van Stokkum IHM. A Hidden State in Light-Harvesting Complex II Revealed By Multipulse Spectroscopy. J Phys Chem B 2015; 119:5184-93. [PMID: 25815531 PMCID: PMC4500649 DOI: 10.1021/acs.jpcb.5b01335] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 03/23/2015] [Indexed: 11/28/2022]
Abstract
Light-harvesting complex II (LHCII) is pivotal both for collecting solar radiation for photosynthesis, and for protection against photodamage under high light intensities (via a process called nonphotochemical quenching, NPQ). Aggregation of LHCII is associated with fluorescence quenching, and is used as an in vitro model system of NPQ. However, there is no agreement on the nature of the quencher and on the validity of aggregation as a model system. Here, we use ultrafast multipulse spectroscopy to populate a quenched state in unquenched (unaggregated) LHCII. The state shows characteristic features of lutein and chlorophyll, suggesting that it is an excitonically coupled state between these two compounds. This state decays in approximately 10 ps, making it a strong competitor for photodamage and photochemical quenching. It is observed in trimeric and monomeric LHCII, upon re-excitation with pulses of different wavelengths and duration. We propose that this state is always present, but is scarcely populated under low light intensities. Under high light intensities it may become more accessible, e.g. by conformational changes, and then form a quenching channel. The same state may be the cause of fluorescence blinking observed in single-molecule spectroscopy of LHCII trimers, where a small subpopulation is in an energetically higher state where the pathway to the quencher opens up.
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Affiliation(s)
- Bart van Oort
- Department
of Physics and Astronomy, Faculty of Sciences, VU University Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
- Institute
for Lasers, Life and Biophotonics, Faculty of Sciences, VU University Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - Rienk van Grondelle
- Department
of Physics and Astronomy, Faculty of Sciences, VU University Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
- Institute
for Lasers, Life and Biophotonics, Faculty of Sciences, VU University Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - Ivo H. M. van Stokkum
- Department
of Physics and Astronomy, Faculty of Sciences, VU University Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
- Institute
for Lasers, Life and Biophotonics, Faculty of Sciences, VU University Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
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17
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Cisek R, Tokarz D, Hirmiz N, Saxena A, Shik A, Ruda HE, Barzda V. Crystal lattice determination of ZnSe nanowires with polarization-dependent second harmonic generation microscopy. NANOTECHNOLOGY 2014; 25:505703. [PMID: 25431947 DOI: 10.1088/0957-4484/25/50/505703] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We demonstrate a noninvasive optical microscopy technique based on polarization-dependent second harmonic generation for determining the crystal lattice structure and microscopic heterogeneities within individual nanostructures. Differentiation between periodically twinned and wurtzite ZnSe nanowires (NWs) was demonstrated, and measurement of the cubic lattice rotation orientation around the NW axis was determined within 1° accuracy. Zinc blende NWs were differentiated from wurtzite. The technique can be used for quality inspection and optimization of growth conditions for nanostructures.
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Affiliation(s)
- Richard Cisek
- Department of Chemical and Physical Sciences, Department of Physics, and Institute for Optical Sciences, University of Toronto, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada
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18
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Cisek R, Tokarz D, Krouglov S, Steup M, Emes MJ, Tetlow IJ, Barzda V. Second Harmonic Generation Mediated by Aligned Water in Starch Granules. J Phys Chem B 2014; 118:14785-94. [DOI: 10.1021/jp508751s] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Tokarz D, Cisek R, El-Ansari O, Espie GS, Fekl U, Barzda V. Organization of astaxanthin within oil bodies of Haematococcus pluvialis studied with polarization-dependent harmonic generation microscopy. PLoS One 2014; 9:e107804. [PMID: 25215522 PMCID: PMC4162621 DOI: 10.1371/journal.pone.0107804] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 08/15/2014] [Indexed: 11/19/2022] Open
Abstract
Nonlinear optical microscopy was used to image the localization of astaxanthin accumulation in the green alga, Haematococcus pluvialis. Polarization-in, polarization-out (PIPO) second harmonic generation (SHG) and third harmonic generation (THG) microscopy was applied to study the crystalline organization of astaxanthin molecules in light-stressed H. pluvialis in vivo. Since astaxanthin readily forms H- and J-aggregates in aqueous solutions, PIPO THG studies of astaxanthin aggregates contained in red aplanospores were compared to PIPO THG of in vitro self-assembled H- and J-aggregates of astaxanthin. The PIPO THG data clearly showed an isotropic organization of astaxanthin in red aplanospores of H. pluvialis. This is in contrast to the highly anisotropic organization of astaxanthin in synthetic H- and J-aggregates, which showed to be uniaxial. Since carotenoids in vitro preferentially form H- and J-aggregates, but in vivo form a randomly organized structure, this implies that astaxanthin undergoes a different way of packing in biological organisms, which is either due to the unique physical environment of the alga or is controlled enzymatically.
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Affiliation(s)
- Danielle Tokarz
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, Mississauga, Ontario, Canada
| | - Richard Cisek
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, Mississauga, Ontario, Canada
| | - Omar El-Ansari
- Department of Cell and Systems Biology, University of Toronto, Toronto, Ontario, Canada
| | - George S. Espie
- Department of Biology, University of Toronto Mississauga, Mississauga, Ontario, Canada
- Department of Cell and Systems Biology, University of Toronto, Toronto, Ontario, Canada
| | - Ulrich Fekl
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, Mississauga, Ontario, Canada
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada
| | - Virginijus Barzda
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, Mississauga, Ontario, Canada
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada
- Department of Physics and Institute for Optical Sciences, University of Toronto, Toronto, Ontario, Canada
- * E-mail:
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20
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Tokarz D, Cisek R, Fekl U, Barzda V. The molecular second hyperpolarizability of the light-harvesting chlorophyll a/b pigment-protein complex of photosystem II. J Phys Chem B 2013; 117:11069-75. [PMID: 23731089 DOI: 10.1021/jp400739v] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Photosynthetic structures when imaged with nonlinear optical microscopy give rise to high third harmonic generation (THG) signal intensity due to the presence of chlorophylls and xanthophylls which have large second hyperpolarizabilitiy (γ) values. The γ value of trimers of the light-harvesting chlorophyll a/b pigment-protein complex of photosystem II (LHCII) isolated from pea (Pisum sativum) plants was investigated by the THG ratio technique at 1028 nm wavelength and found to have the value (-1600 ± 400) × 10(-41) m(2) V(-2). The large negative γ value of trimeric LHCII is due to the presence of chlorophyll a and chlorophyll b which have large negative γ values, while positive γ values of xanthophylls reduce the magnitude of the THG signal. Variation was observed between the measured γ value of LHCII and the approximated γ value of LHCII obtained by adding individual γ values of chlorophylls and xanthophylls. This difference can be attributed to the differing inter-pigment interactions of oriented chlorophylls and xanthophylls in the pigment-protein complex compared to randomly oriented non-interacting pigments in solution, as well as a differing dielectric environment of the pigments within LHCII versus the surrounding organic solvent.
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Affiliation(s)
- Danielle Tokarz
- Department of Chemical and Physical Sciences, University of Toronto Mississauga , 3359 Mississauga Road North, Mississauga, ON, Canada L5L 1C6
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21
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Tokarz D, Cisek R, Prent N, Fekl U, Barzda V. Measuring the molecular second hyperpolarizability in absorptive solutions by the third harmonic generation ratio technique. Anal Chim Acta 2012; 755:86-92. [PMID: 23146398 DOI: 10.1016/j.aca.2012.09.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Revised: 09/21/2012] [Accepted: 09/29/2012] [Indexed: 11/29/2022]
Abstract
Measurement of the second hyperpolarizability (γ) values of compounds can provide insight into the molecular structural requirements for enhancement of third harmonic generation (THG) signal. A convenient method for measuring the γ of compounds in solutions was developed by implementing the THG ratio method which is based on measuring the THG intensity from two interfaces using a nonlinear optical microscope while accounting for the refractive index of solutions at the fundamental and third harmonic wavelengths. We demonstrated that the difference in refractive index at both wavelengths strongly influenced the calculation of γ values when compounds have absorption near the third harmonic or fundamental wavelength. To this end, a refractometer with the wavelength tuning range from UV to near IR was constructed, and the measured refractive indices were used to extract the γ values. The γ values of carotenoids and chlorophylls found in photosynthetic pigment-protein complexes were explored. Large differences in the refractive index at third harmonic and fundamental wavelengths for chlorophylls result in γ values that are more than two orders of magnitude larger than γ values for carotenoids as well as the sign of chlorophylls'γ values is negative while carotenoids have positive γ values.
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Affiliation(s)
- Danielle Tokarz
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, Mississauga, ON, Canada
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22
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Caissard JC, Olivier T, Delbecque C, Palle S, Garry PP, Audran A, Valot N, Moja S, Nicolé F, Magnard JL, Legrand S, Baudino S, Jullien F. Extracellular localization of the diterpene sclareol in clary sage (Salvia sclarea L., Lamiaceae). PLoS One 2012; 7:e48253. [PMID: 23133579 PMCID: PMC3484996 DOI: 10.1371/journal.pone.0048253] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Accepted: 09/21/2012] [Indexed: 11/19/2022] Open
Abstract
Sclareol is a high-value natural product obtained by solid/liquid extraction of clary sage (Salvia sclarea L.) inflorescences. Because processes of excretion and accumulation of this labdane diterpene are unknown, the aim of this work was to gain knowledge on its sites of accumulation in planta. Samples were collected in natura or during different steps of the industrial process of extraction (steam distillation and solid/liquid extraction). Samples were then analysed with a combination of complementary analytical techniques (gas chromatography coupled to a mass spectrometer, polarized light microscopy, environmental scanning electron microscopy, two-photon fluorescence microscopy, second harmonic generation microscopy). According to the literature, it is hypothesized that sclareol is localized in oil pockets of secretory trichomes. This study demonstrates that this is not the case and that sclareol accumulates in a crystalline epicuticular form, mostly on calyces.
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Affiliation(s)
- Jean-Claude Caissard
- Laboratoire de Biotechnologies Végétales Appliquées aux Plantes Aromatiques et Médicinales, Université Jean Monnet, Université de Lyon, Saint-Etienne, France.
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23
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Psilodimitrakopoulos S, Amat-Roldan I, Loza-Alvarez P, Artigas D. Effect of molecular organization on the image histograms of polarization SHG microscopy. BIOMEDICAL OPTICS EXPRESS 2012; 3:2681-93. [PMID: 23082306 PMCID: PMC3470008 DOI: 10.1364/boe.3.002681] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 09/08/2012] [Accepted: 09/22/2012] [Indexed: 05/02/2023]
Abstract
Based on its polarization dependency, second harmonic generation (PSHG) microscopy has been proven capable to structurally characterize molecular architectures in different biological samples. By exploiting this polarization dependency of the SHG signal in every pixel of the image, average quantitative structural information can be retrieved in the form of PSHG image histograms. In the present study we experimentally show how the PSHG image histograms can be affected by the organization of the SHG active molecules. Our experimental scenario grounds on two inherent properties of starch granules. Firstly, we take advantage of the radial organization of amylopectin molecules (the SHG source in starch) to attribute shifts of the image histograms to the existence of tilted off the plane molecules. Secondly, we use the property of starch to organize upon hydration to demonstrate that the degree of structural order at the molecular level affects the width of the PSHG image histograms. The shorter the width is the more organized the molecules in the sample are, resulting in a reliable method to measure order. The implication of this finding is crucial to the interpretation of PSHG images used for example in tissue diagnostics.
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Affiliation(s)
| | - Ivan Amat-Roldan
- ICFO-Institut de Ciències Fotòniques, Mediterranean
Technology Park, 08860 Castelldefels (Barcelona), Spain
| | - Pablo Loza-Alvarez
- ICFO-Institut de Ciències Fotòniques, Mediterranean
Technology Park, 08860 Castelldefels (Barcelona), Spain
| | - David Artigas
- ICFO-Institut de Ciències Fotòniques, Mediterranean
Technology Park, 08860 Castelldefels (Barcelona), Spain
- Department of signal theory and communications, Universitat
Politècnica de Catalunya, 08034, Spain
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Fereidouni F, Bader AN, Gerritsen HC. Spectral phasor analysis allows rapid and reliable unmixing of fluorescence microscopy spectral images. OPTICS EXPRESS 2012; 20:12729-41. [PMID: 22714302 DOI: 10.1364/oe.20.012729] [Citation(s) in RCA: 147] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
A new global analysis algorithm to analyse (hyper-) spectral images is presented. It is based on the phasor representation that has been demonstrated to be very powerful for the analysis of lifetime imaging data. In spectral phasor analysis the fluorescence spectrum of each pixel in the image is Fourier transformed. Next, the real and imaginary components of the first harmonic of the transform are employed as X and Y coordinates in a scatter (spectral phasor) plot. Importantly, the spectral phasor representation allows for rapid (real time) semi-blind spectral unmixing of up to three components in the image. This is demonstrated on slides with fixed cells containing three fluorescent labels. In addition the method is used to analyse autofluorescence of cells in a fresh grass blade. It is shown that the spectral phasor approach is compatible with spectral imaging data recorded with a low number of spectral channels.
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Affiliation(s)
- Farzad Fereidouni
- Department of Molecular Biophysics, Debye Institute, Utrecht University, Utrecht, The Netherlands
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25
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Tokarz D, Cisek R, Garbaczewska M, Sandkuijl D, Qiu X, Stewart B, Levine JD, Fekl U, Barzda V. Carotenoid based bio-compatible labels for third harmonic generation microscopy. Phys Chem Chem Phys 2012; 14:10653-61. [DOI: 10.1039/c2cp41583f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Slepkov AD, Ridsdale A, Pegoraro AF, Moffatt DJ, Stolow A. Multimodal CARS microscopy of structured carbohydrate biopolymers. BIOMEDICAL OPTICS EXPRESS 2010; 1:1347-1357. [PMID: 21258555 PMCID: PMC3018121 DOI: 10.1364/boe.1.001347] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2010] [Revised: 10/04/2010] [Accepted: 11/04/2010] [Indexed: 05/06/2023]
Abstract
We demonstrate the utility of multimodal coherent anti-Stokes Raman scattering (CARS) microscopy for the study of structured condensed carbohydrate systems. Simultaneous second-harmonic generation (SHG) and spectrally-scanned CARS microscopy was used to elucidate structure, alignment, and density in cellulose cotton fibers and in starch grains undergoing rapid heat-moisture swelling. Our results suggest that CARS response of the O-H stretch region (3000 cm(-1)-3400 cm(-1)), together with the commonly-measured C-H stretch (2750 cm(-1)-2970 cm(-1)) and SHG provide potentially important structural information and contrast in these materials.
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Affiliation(s)
- Aaron D. Slepkov
- Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa,
Ontario, K1A 0R6 Canada
| | - Andrew Ridsdale
- Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa,
Ontario, K1A 0R6 Canada
| | - Adrian F. Pegoraro
- Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa,
Ontario, K1A 0R6 Canada
- Department of Physics, Queen’s University, Kingston, Ontario, K7L 3N6 Canada
| | - Douglas J. Moffatt
- Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa,
Ontario, K1A 0R6 Canada
| | - Albert Stolow
- Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa,
Ontario, K1A 0R6 Canada
- Department of Physics, Queen’s University, Kingston, Ontario, K7L 3N6 Canada
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27
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Sandkuijl D, Cisek R, Major A, Barzda V. Differential microscopy for fluorescence-detected nonlinear absorption linear anisotropy based on a staggered two-beam femtosecond Yb:KGW oscillator. BIOMEDICAL OPTICS EXPRESS 2010; 1:895-901. [PMID: 21258516 PMCID: PMC3018061 DOI: 10.1364/boe.1.000895] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2010] [Revised: 09/09/2010] [Accepted: 09/10/2010] [Indexed: 05/24/2023]
Abstract
We present a new laser system and nonlinear microscope, designed for differential nonlinear microscopy. The microscope features time-correlated single photon counting of multiphoton fluorescence generated by an alternating pulse-train of orthogonally polarized pulses. The generated nonlinear signal is separated using home-built electronics. Results are presented on fluorescence-detected nonlinear absorption linear anisotropy (FDNALA) of chloroplasts in Asparagus Sprengerii Regel and of Congo Red-stained cellulose.
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Affiliation(s)
- Daaf Sandkuijl
- Department of Chemical and Physical Sciences, Department of Physics and Institute for Optical Sciences, University of Toronto, 3359 Mississauga Rd. North, Mississauga, ON, L5L 1C6, Canada
| | - Richard Cisek
- Department of Chemical and Physical Sciences, Department of Physics and Institute for Optical Sciences, University of Toronto, 3359 Mississauga Rd. North, Mississauga, ON, L5L 1C6, Canada
| | - Arkady Major
- Department of Electrical and Computer Engineering, University of Manitoba, 75 Chancellor’s Circle, Winnipeg, MB, R3T 5V6, Canada
| | - Virginijus Barzda
- Department of Chemical and Physical Sciences, Department of Physics and Institute for Optical Sciences, University of Toronto, 3359 Mississauga Rd. North, Mississauga, ON, L5L 1C6, Canada
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28
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Boekema EJ. Introduction to imaging methods in photosynthesis. PHOTOSYNTHESIS RESEARCH 2009; 102:107-9. [PMID: 19757143 PMCID: PMC2777216 DOI: 10.1007/s11120-009-9488-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Accepted: 08/10/2009] [Indexed: 05/28/2023]
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