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Al‐Qahtani SD, Snari RM, Alkhamis K, Alhasani M, Ibarhiam SF, Habeebullah TM, El‐Metwaly NM. Authentication of documents using polypropylene immobilized with rare‐earth doped aluminate nanoparticles. Microsc Res Tech 2022; 85:2607-2617. [DOI: 10.1002/jemt.24116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/05/2022] [Accepted: 03/10/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Salhah D. Al‐Qahtani
- Department of Chemistry, College of Science Princess Nourah Bint Abdulrahman University Riyadh Saudi Arabia
| | - Razan M. Snari
- Department of Chemistry, Faculty of Applied Science Umm‐Al‐Qura University Makkah Saudi Arabia
| | - Kholood Alkhamis
- Department of Chemistry, College of Science University of Tabuk Tabuk Saudi Arabia
| | - Mona Alhasani
- Department of Chemistry, Faculty of Applied Science Umm‐Al‐Qura University Makkah Saudi Arabia
| | - Saham F. Ibarhiam
- Department of Chemistry, College of Science University of Tabuk Tabuk Saudi Arabia
| | - Turki M. Habeebullah
- Department of Environment and Health Research Custodian of Two Holy Mosques Institute for Hajj and Umrah Research, Umm Al Qura University Makkah Saudi Arabia
| | - Nashwa M. El‐Metwaly
- Department of Chemistry, Faculty of Applied Science Umm‐Al‐Qura University Makkah Saudi Arabia
- Department of Chemistry, Faculty of Science Mansoura University Mansoura Egypt
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2
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Single-molecule studies beyond optical imaging: Multi-parameter single-molecule spectroscopy. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2018. [DOI: 10.1016/j.jphotochemrev.2017.11.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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3
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Becker W. Fluorescence lifetime imaging by multi-dimensional time correlated single photon counting. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.medpho.2015.02.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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4
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Stöttinger S, Hinze G, Diezemann G, Oesterling I, Müllen K, Basché T. Impact of local compressive stress on the optical transitions of single organic dye molecules. NATURE NANOTECHNOLOGY 2014; 9:182-186. [PMID: 24463364 DOI: 10.1038/nnano.2013.303] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Accepted: 12/12/2013] [Indexed: 06/03/2023]
Abstract
The ability to mechanically control the optical properties of individual molecules is a grand challenge in nanoscience and could enable the manipulation of chemical reactivity at the single-molecule level. In the past, light has been used to alter the emission wavelength of individual molecules or modulate the energy transfer quantum yield between them. Furthermore, tensile stress has been applied to study the force dependence of protein folding/unfolding and of the chemistry and photochemistry of single molecules, although in these mechanical experiments the strength of the weakest bond limits the amount of applicable force. Here, we show that compressive stress modifies the photophysical properties of individual dye molecules. We use an atomic force microscope tip to prod individual molecules adsorbed on a surface and follow the effect of the applied force on the electronic states of the molecule by fluorescence spectroscopy. Applying a localized compressive force on an isolated molecule induces a stress that is redistributed throughout the structure. Accordingly, we observe reversible spectral shifts and even shifts that persist after retracting the microscope tip, which we attribute to transitions to metastable states. Using quantum-mechanical calculations, we show that these photophysical changes can be associated with transitions among the different possible conformers of the adsorbed molecule.
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Affiliation(s)
- Sven Stöttinger
- Institut für Physikalische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Gerald Hinze
- Institut für Physikalische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Gregor Diezemann
- Institut für Physikalische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Ingo Oesterling
- Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany
| | - Klaus Müllen
- Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany
| | - Thomas Basché
- Institut für Physikalische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
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5
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Jacobs MJ, Blank K. Joining forces: integrating the mechanical and optical single molecule toolkits. Chem Sci 2014. [DOI: 10.1039/c3sc52502c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Combining single molecule force measurements with fluorescence detection opens up exciting new possibilities for the characterization of mechanoresponsive molecules in Biology and Materials Science.
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Affiliation(s)
- Monique J. Jacobs
- Radboud University Nijmegen
- Institute for Molecules and Materials
- Department of Molecular Materials
- 6525 AJ Nijmegen, The Netherlands
| | - Kerstin Blank
- Radboud University Nijmegen
- Institute for Molecules and Materials
- Department of Molecular Materials
- 6525 AJ Nijmegen, The Netherlands
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7
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Yip CM. Correlative optical and scanning probe microscopies for mapping interactions at membranes. Methods Mol Biol 2013; 950:439-56. [PMID: 23086889 DOI: 10.1007/978-1-62703-137-0_24] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Innovative approaches for real-time imaging on molecular-length scales are providing researchers with powerful strategies for characterizing molecular and cellular structures and dynamics. Combinatorial techniques that integrate two or more distinct imaging modalities are particularly compelling as they provide a means for overcoming the limitations of the individual modalities and, when applied simultaneously, enable the collection of rich multi-modal datasets. Almost since its inception, scanning probe microscopy has closely associated with optical microscopy. This is particularly evident in the fields of cellular and molecular biophysics where researchers are taking full advantage of these real-time, in situ, tools to acquire three-dimensional molecular-scale topographical images with nanometer resolution, while simultaneously characterizing their structure and interactions though conventional optical microscopy. The ability to apply mechanical or optical stimuli provides an additional experimental dimension that has shown tremendous promise for examining dynamic events on sub-cellular length scales. In this chapter, we describe recent efforts in developing these integrated platforms, the methodology for, and inherent challenges in, performing coupled imaging experiments, and the potential and future opportunities of these research tools for the fields of molecular and cellular biophysics with a specific emphasis on the application of these coupled approaches for the characterization of interactions occurring at membrane interfaces.
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Affiliation(s)
- Christopher M Yip
- Department of Chemical Engineering and Applied Chemistry, Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, Canada.
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8
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Chang CL, Tsai PY, Chang YP, Lin KC. Interfacial Electron Transfer from CdSe/ZnS Quantum Dots to TiO2 Nanoparticles: Size Dependence at the Single-Molecule Level. Chemphyschem 2012; 13:2711-20. [DOI: 10.1002/cphc.201200037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Revised: 04/10/2012] [Indexed: 11/12/2022]
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9
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He Y, Lu M, Cao J, Lu HP. Manipulating protein conformations by single-molecule AFM-FRET nanoscopy. ACS NANO 2012; 6:1221-9. [PMID: 22276737 PMCID: PMC3662055 DOI: 10.1021/nn2038669] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Combining atomic force microscopy and fluorescence resonance energy transfer spectroscopy (AFM-FRET), we have developed a single-molecule AFM-FRET nanoscopy approach capable of effectively pinpointing and mechanically manipulating a targeted dye-labeled single protein in a large sampling area and simultaneously monitoring the conformational changes of the targeted protein by recording single-molecule FRET time trajectories. We have further demonstrated an application of using this nanoscopy on manipulation of single-molecule protein conformation and simultaneous single-molecule FRET measurement of a Cy3-Cy5-labeled kinase enzyme, HPPK (6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase). By analyzing time-resolved FRET trajectories and correlated AFM force pulling curves of the targeted single-molecule enzyme, we are able to observe the protein conformational changes of a specific coordination by AFM mechanic force pulling.
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10
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Gaiduk A, Yorulmaz M, Ishow E, Orrit M. Absorption, luminescence, and sizing of organic dye nanoparticles and of patterns formed upon dewetting. Chemphyschem 2011; 13:946-51. [PMID: 22184072 DOI: 10.1002/cphc.201100788] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Indexed: 11/11/2022]
Abstract
Organic nanoparticles made of a push-pull triarylamine dye with an average diameter of 60 nm, were prepared by reprecipitation. We study their photophysical properties by a combination of photothermal and fluorescence microscopy. Photothermal contrast provides a quantitative measure of the number of absorbers. The size of nanoparticles estimated from the absorption measurements was compared with sizes measured by AFM. Fluorescence and absorption microscopy provide quantum yield on the single-particle level as a function of excitation intensity. The quantum yield strongly decreases at high intensities because of singlet-singlet or singlet-triplet annihilation. We also report the formation of molecular thin layers and of labyrinth-shaped structures on glass substrates, presumably induced by dewetting.
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Affiliation(s)
- Alexander Gaiduk
- Institute of Physics, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands
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11
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Abstract
Molecular diffusion and transport processes are fundamental in physical, chemical, and biological systems. Current approaches to measuring molecular transport in cells and tissues based on perturbation methods, e.g., fluorescence recovery after photobleaching, are invasive; single-point fluctuation correlation methods are local; and single-particle tracking requires the observation of isolated particles for relatively long periods of time. We discuss here the detection of molecular transport by exploiting spatiotemporal correlations measured among points at large distances (>1 μm). We illustrate the evolution of the conceptual framework that started with single-point fluorescence fluctuation analysis based on the transit of fluorescent molecules through a small volume of illumination. This idea has evolved to include the measurement of fluctuations at many locations in the sample using microscopy imaging methods. Image fluctuation analysis has become a rich and powerful technique that can be used to extract information about the spatial distribution of molecular concentration and transport in cells and tissues.
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Affiliation(s)
- Michelle A Digman
- Laboratory for Fluorescence Dynamics, Department of Biomedical Engineering, University of California, Irvine, California 92697, USA
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12
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Single-photon atomic force microscopy. Anal Bioanal Chem 2010; 397:987-90. [PMID: 20066528 DOI: 10.1007/s00216-009-3426-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2009] [Revised: 12/16/2009] [Accepted: 12/17/2009] [Indexed: 10/20/2022]
Abstract
In the last few years, an array of novel technologies, especially the big family of scanning probe microscopy, now often integrated with other powerful imaging tools such as laser confocal microscopy and total internal reflection fluorescence microscopy, have been widely applied in the investigation of biomolecular interactions and dynamics. But it is still a great challenge to directly monitor the dynamics of biomolecular interactions with high spatial and temporal resolution in living cells. An innovative method termed "single-photon atomic force microscopy" (SP-AFM), superior to existing techniques in tracing biomolecular interactions and dynamics in vivo, was proposed on the basis of the combination of atomic force microscopy with the technologies of carbon nanotubes and single-photon detection. As a unique tool, SP-AFM, capable of simultaneous topography imaging and molecular identification at the subnanometer level by synchronous acquisitions and analyses of the surface topography and fluorescent optical signals while scanning the sample, could play a very important role in exploring biomolecular interactions and dynamics in living cells or in a complicated biomolecular background.
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Carlin LM, Makrogianneli K, Keppler M, Fruhwirth GO, Ng T. Visualisation of signalling in immune cells. Methods Mol Biol 2010; 616:97-113. [PMID: 20379871 DOI: 10.1007/978-1-60761-461-6_7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Currently, a great number of approaches are employed in investigation of the immune system. These range from experiments in live animals and biochemical techniques to investigate whole organs or cell populations down to single cell and molecular techniques to look at dynamics in specific cell-cell interactions. It is the latter approach that this chapter focusses on. The use of Förster resonance energy transfer (FRET) techniques to probe protein-protein interactions that are involved in receptor signalling to the cytoskeleton in intact cells is now well established. Various FRET biosensors are available to visualise several critical cell processes, giving information about activity and the location of key signalling molecules. As a specific set of examples in this chapter, we have generated variants of the original Rho, Rac and Cdc42 "Raichu" probes and improved their fluorophore combination to make them suitable for FLIM. These were employed in a number of assays to determine signal dynamics in T and NK cells. Specific protocols of how to use these probes and technical notes are described.
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Affiliation(s)
- Leo M Carlin
- Cancer Studies Division/Randall Division of Cellular and Molecular Biophysics, Richard Dimbleby Department of Cancer Research, Guy's Medical School Campus, King's College London, London, UK
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14
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Biology, one molecule at a time. Trends Biochem Sci 2009; 34:234-43. [PMID: 19362843 DOI: 10.1016/j.tibs.2009.01.008] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2008] [Revised: 01/23/2009] [Accepted: 01/23/2009] [Indexed: 11/21/2022]
Abstract
Single-molecule techniques have moved from being a fascinating curiosity to a highlight of life science research. The single-molecule approach to biology offers distinct advantages over the conventional approach of taking bulk measurements; this additional information content usually comes at the cost of the additional complexity. Popular single-molecule methods include optical and magnetic tweezers, atomic force microscopy, tethered particle motion and single-molecule fluorescence spectroscopy; the complement of these methods offers a wide range of spatial and temporal capabilities. These approaches have been instrumental in addressing important biological questions in diverse areas such as protein-DNA interactions, protein folding and the function(s) of membrane proteins.
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15
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Blum C, Cesa Y, Escalante M, Subramaniam V. Multimode microscopy: spectral and lifetime imaging. J R Soc Interface 2008. [DOI: 10.1098/rsif.2008.0356.focus] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Multimode microscopy exploits the measurement of multiple spectroscopic parameters to yield a wealth of spatially resolved spectroscopic detail about the sample under study. Here, we describe the realization of a multimode microscope capable of wide-field transmission, reflectivity and emission imaging. The instrument also incorporates confocal spectral and lifetime imaging enabling convenient high-content imaging of complex samples, allowing the direct correlation of the data obtained from the different modes. We demonstrate the versatility of this imaging platform by reviewing applications to the modulation of fluorescent protein emission by inverse opal photonic crystals, to the detection and visualization of J-aggregate coupling of small molecule dyes intercalated into nanochannels in zeolites and to the visualization of fluorescent proteins micropatterned onto surfaces. In all cases, the combination of different microspectroscopic modes is essential for the resolution of specific photophysical details of the complex systems in question.
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Affiliation(s)
- Christian Blum
- Biophysical Engineering Group, Faculty of Science and Technology, MESA+ Institute for Nanotechnology, University of TwenteP.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Yanina Cesa
- Biophysical Engineering Group, Faculty of Science and Technology, MESA+ Institute for Nanotechnology, University of TwenteP.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Maryana Escalante
- Biophysical Engineering Group, Faculty of Science and Technology, MESA+ Institute for Nanotechnology, University of TwenteP.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Vinod Subramaniam
- Biophysical Engineering Group, Faculty of Science and Technology, MESA+ Institute for Nanotechnology, University of TwenteP.O. Box 217, 7500 AE Enschede, The Netherlands
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16
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Oreopoulos J, Yip CM. Combined scanning probe and total internal reflection fluorescence microscopy. Methods 2008; 46:2-10. [PMID: 18602010 DOI: 10.1016/j.ymeth.2008.05.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2008] [Accepted: 05/22/2008] [Indexed: 11/19/2022] Open
Abstract
Combining scanning probe and optical microscopy represents a powerful approach for investigating structure-function relationships and dynamics of biomolecules and biomolecular assemblies, often in situ and in real-time. This platform technology allows us to obtain three-dimensional images of individual molecules with nanometer resolution, while simultaneously characterizing their structure and interactions though complementary techniques such as optical microscopy and spectroscopy. We describe herein the practical strategies for the coupling of scanning probe and total internal reflection fluorescence microscopy along with challenges and the potential applications of such platforms, with a particular focus on their application to the study of biomolecular interactions at membrane surfaces.
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Affiliation(s)
- John Oreopoulos
- Institute of Biomaterials and Biomedical Engineering, Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, Ont., Canada M5S 3E1
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17
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Ting CL, Makarov DE. Two-dimensional fluorescence resonance energy transfer as a probe for protein folding: A theoretical study. J Chem Phys 2008; 128:115102. [DOI: 10.1063/1.2835611] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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