1
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DʼEste E, Lukinavičius G, Lincoln R, Opazo F, Fornasiero EF. Advancing cell biology with nanoscale fluorescence imaging: essential practical considerations. Trends Cell Biol 2024; 34:671-684. [PMID: 38184400 DOI: 10.1016/j.tcb.2023.12.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 12/06/2023] [Accepted: 12/11/2023] [Indexed: 01/08/2024]
Abstract
Recently, biologists have gained access to several far-field fluorescence nanoscopy (FN) technologies that allow the observation of cellular components with ~20 nm resolution. FN is revolutionizing cell biology by enabling the visualization of previously inaccessible subcellular details. While technological advances in microscopy are critical to the field, optimal sample preparation and labeling are equally important and often overlooked in FN experiments. In this review, we provide an overview of the methodological and experimental factors that must be considered when performing FN. We present key concepts related to the selection of affinity-based labels, dyes, multiplexing, live cell imaging approaches, and quantitative microscopy. Consideration of these factors greatly enhances the effectiveness of FN, making it an exquisite tool for numerous biological applications.
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Affiliation(s)
- Elisa DʼEste
- Optical Microscopy Facility, Max Planck Institute for Medical Research, Heidelberg 69120, Germany.
| | - Gražvydas Lukinavičius
- Chromatin Labelling and Imaging Group, Department of NanoBiophotonics, Max Planck Institute for Multidisciplinary Sciences, Göttingen 37077, Germany.
| | - Richard Lincoln
- Department of Optical Nanoscopy, Max Planck Institute for Medical Research, Heidelberg 69120, Germany.
| | - Felipe Opazo
- Institute of Neuro- and Sensory Physiology, University Medical Center Göttingen (UMG), Göttingen 37073, Germany; Center for Biostructural Imaging of Neurodegeneration (BIN), University Medical Center, Göttingen 37075, Germany; NanoTag Biotechnologies GmbH, Göttingen 37079, Germany.
| | - Eugenio F Fornasiero
- Institute of Neuro- and Sensory Physiology, University Medical Center Göttingen (UMG), Göttingen 37073, Germany; Department of Life Sciences, University of Trieste, Trieste 34127, Italy.
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2
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Zhang Y, Zheng Y, Tomassini A, Singh AK, Raymo FM. Photoactivatable Fluorophores for Bioimaging Applications. ACS APPLIED OPTICAL MATERIALS 2023; 1:640-651. [PMID: 37601830 PMCID: PMC10437147 DOI: 10.1021/acsaom.3c00025] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
Photoactivatable fluorophores provide the opportunity to switch fluorescence on exclusively in a selected area within a sample of interest at a precise interval of time. Such a level of spatiotemporal fluorescence control enables the implementation of imaging schemes to monitor dynamic events in real time and visualize structural features with nanometer resolution. These transformative imaging methods are contributing fundamental insights on diverse cellular processes with profound implications in biology and medicine. Current photoactivatable fluorophores, however, become emissive only after the activation event, preventing the acquisition of fluorescence images and, hence, the visualization of the sample prior to activation. We developed a family of photoactivatable fluorophores capable of interconverting between emissive states with spectrally resolved fluorescence, instead of switching from a nonemissive state to an emissive one. We demonstrated that our compounds allow the real-time monitoring of molecules diffusing across the cellular blastoderm of developing embryos as well as of polymer beads translocating along the intestinal tract of live nematodes. Additionally, they also permit the tracking of single molecules in the lysosomal compartments of live cells and the visualization of these organelles with nanometer resolution. Indeed, our photoactivatable fluorophores may evolve into invaluable analytical tools for the investigation of the fundamental factors regulating the functions and structures of cells at the molecular level.
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Affiliation(s)
- Yang Zhang
- Program of Polymer and Color Chemistry, Department of Textile Engineering, Chemistry and Science, North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Yeting Zheng
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, Coral Gables, Florida 33146-0431, United States
| | - Andrea Tomassini
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, Coral Gables, Florida 33146-0431, United States
| | - Ambarish Kumar Singh
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, Coral Gables, Florida 33146-0431, United States
| | - Françisco M Raymo
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, Coral Gables, Florida 33146-0431, United States
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3
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Zhang Y, Zheng Y, Tomassini A, Singh AK, Raymo FM. Photoactivatable BODIPYs for Live-Cell PALM. Molecules 2023; 28:molecules28062447. [PMID: 36985424 PMCID: PMC10057988 DOI: 10.3390/molecules28062447] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/03/2023] [Accepted: 03/04/2023] [Indexed: 03/10/2023] Open
Abstract
Photoactivated localization microscopy (PALM) relies on fluorescence photoactivation and single-molecule localization to overcome optical diffraction and reconstruct images of biological samples with spatial resolution at the nanoscale. The implementation of this subdiffraction imaging method, however, requires fluorescent probes with photochemical and photophysical properties specifically engineered to enable the localization of single photoactivated molecules with nanometer precision. The synthetic versatility and outstanding photophysical properties of the borondipyrromethene (BODIPY) chromophore are ideally suited to satisfy these stringent requirements. Specifically, synthetic manipulations of the BODIPY scaffold can be invoked to install photolabile functional groups and photoactivate fluorescence under photochemical control. Additionally, targeting ligands can be incorporated in the resulting photoactivatable fluorophores (PAFs) to label selected subcellular components in live cells. Indeed, photoactivatable BODIPYs have already allowed the sub-diffraction imaging of diverse cellular substructures in live cells using PALM and can evolve into invaluable analytical probes for bioimaging applications.
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Affiliation(s)
- Yang Zhang
- Program of Polymer and Color Chemistry, Department of Textile Engineering, Chemistry and Science, North Carolina State University, Raleigh, NC 27606, USA
- Correspondence: (Y.Z.); (F.M.R.)
| | - Yeting Zheng
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL 33146-0431, USA
| | - Andrea Tomassini
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL 33146-0431, USA
| | - Ambarish Kumar Singh
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL 33146-0431, USA
| | - Françisco M. Raymo
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL 33146-0431, USA
- Correspondence: (Y.Z.); (F.M.R.)
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4
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Trifoi LA, Dogantzis NP, Hodgson GK, Ortiz PD, Soha SA, Antonescu CN, Botelho RJ, Wylie RS, Impellizzeri S. Single-colour, visible light activation and excitation of the luminescence of a ‘switch-on’ dye and enhancement by silver nanoparticles. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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5
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Hernández-Pacheco P, Zelada-Guillén GA, Romero-Ávila M, Cañas-Alonso RC, Flores-Álamo M, Escárcega-Bobadilla MV. Enhanced Host-Guest Association and Fluorescence in Copolymers from Copper Salphen Complexes by Supramolecular Internalization of Anions. Chempluschem 2023; 88:e202200310. [PMID: 36175158 DOI: 10.1002/cplu.202200310] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 09/13/2022] [Indexed: 11/10/2022]
Abstract
We describe the synthesis, crystallographic characterization of a new Cu-Salphen compound and its use as a host Lewis-acid against guest anions in two versions: a) free molecule, b) copolymerized with methyl methacrylate:n-butyl acrylate (1 : 4-wt.) as protective co-monomers. Higher contents in Cu-Salphen yielded larger and more homogeneous polymer sizes. Polymer size together with glass transitions, heat capacity, thermal degradation, guest-saturation degrees and host-guest species distribution profiles from spectrophotometric titrations explained growths of up to 630-fold in K11 and 180000-fold in K12 for the host's binding site attributable to a solvophobic protection from the macromolecular structure. Spectrofluorimetry revealed blue-shifted×13-16 larger luminescence for Cu-Salphen in the polymers (λem =488-498 nm) than that of the non-polymerized counterpart (λem =510-543 nm) and "turn-on" blue-shifted enhanced fluorescence upon guest association. We propose a cooperative incorporation of the guests occurring from the outer medium toward internally protected binding site pockets in the random coil polymer conformations.
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Affiliation(s)
- Paulina Hernández-Pacheco
- School of Chemistry, National Autonomous University of Mexico (UNAM), Circuito Escolar s/n, Ciudad Universitaria, Mexico City, 04510, Mexico
| | - Gustavo A Zelada-Guillén
- School of Chemistry, National Autonomous University of Mexico (UNAM), Circuito Escolar s/n, Ciudad Universitaria, Mexico City, 04510, Mexico
| | - Margarita Romero-Ávila
- School of Chemistry, National Autonomous University of Mexico (UNAM), Circuito Escolar s/n, Ciudad Universitaria, Mexico City, 04510, Mexico
| | - Roberto Carlos Cañas-Alonso
- School of Chemistry, National Autonomous University of Mexico (UNAM), Circuito Escolar s/n, Ciudad Universitaria, Mexico City, 04510, Mexico
| | - Marcos Flores-Álamo
- School of Chemistry, National Autonomous University of Mexico (UNAM), Circuito Escolar s/n, Ciudad Universitaria, Mexico City, 04510, Mexico
| | - Martha V Escárcega-Bobadilla
- School of Chemistry, National Autonomous University of Mexico (UNAM), Circuito Escolar s/n, Ciudad Universitaria, Mexico City, 04510, Mexico
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6
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Wang L, Wang S, Tang J, Espinoza VB, Loredo A, Tian Z, Weisman RB, Xiao H. Oxime as a general photocage for the design of visible light photo-activatable fluorophores. Chem Sci 2021; 12:15572-15580. [PMID: 35003586 PMCID: PMC8654061 DOI: 10.1039/d1sc05351e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 11/21/2021] [Indexed: 12/18/2022] Open
Abstract
Photoactivatable fluorophores have been widely used for tracking molecular and cellular dynamics with subdiffraction resolution. In this work, we have prepared a series of photoactivatable probes using the oxime moiety as a new class of photolabile caging group in which the photoactivation process is mediated by a highly efficient photodeoximation reaction. Incorporation of the oxime caging group into fluorophores results in loss of fluorescence. Upon light irradiation in the presence of air, the oxime-caged fluorophores are oxidized to their carbonyl derivatives, restoring strong fluorophore fluorescence. To demonstrate the utility of these oxime-caged fluorophores, we have created probes that target different organelles for live-cell confocal imaging. We also carried out photoactivated localization microscopy (PALM) imaging under physiological conditions using low-power light activation in the absence of cytotoxic additives. Our studies show that oximes represent a new class of visible-light photocages that can be widely used for cellular imaging, sensing, and photo-controlled molecular release.
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Affiliation(s)
- Lushun Wang
- Department of Chemistry, Rice University 6100 Main Street Houston Texas 77005 USA
| | - Shichao Wang
- Department of Chemistry, Rice University 6100 Main Street Houston Texas 77005 USA
| | - Juan Tang
- Department of Chemistry, Rice University 6100 Main Street Houston Texas 77005 USA
| | - Vanessa B Espinoza
- Department of Chemistry, Rice University 6100 Main Street Houston Texas 77005 USA
| | - Axel Loredo
- Department of Chemistry, Rice University 6100 Main Street Houston Texas 77005 USA
| | - Zeru Tian
- Department of Chemistry, Rice University 6100 Main Street Houston Texas 77005 USA
| | - R Bruce Weisman
- Department of Chemistry, Rice University 6100 Main Street Houston Texas 77005 USA
| | - Han Xiao
- Department of Chemistry, Rice University 6100 Main Street Houston Texas 77005 USA
- Department of Biosciences, Rice University 6100 Main Street Houston Texas 77005 USA
- Department of Bioengineering, Rice University 6100 Main Street Houston Texas 77005 USA
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7
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Erlich AD, Dogantzis NP, Nubani LA, Trifoi LA, Hodgson GK, Impellizzeri S. Design and engineering of a dual-mode absorption/emission molecular switch for all-optical encryption. Phys Chem Chem Phys 2021; 23:25152-25161. [PMID: 34730144 DOI: 10.1039/d1cp03823k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Photochemical reactions that produce a detectable change in the spectroscopic properties of organic chromophores can be exploited to harness the principles of Boolean algebra and design molecule-based logic circuits. Moreover, the logic processing capabilities of these photoactive molecules can be directed to protect, encode, and conceal information at the molecular level. We have designed a photochemical strategy to read, write and encrypt data in the form of optical signals. We have synthesized a supramolecular system based on the known dye resazurin, and investigated a series of photochemical transformations that can be used to regulate its absorption and emission properties upon illumination with ultraviolet or visible light. We have then examined the logic behaviour of the photochemistry involved, and illustrated its potential application in data encryption.
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Affiliation(s)
- Aaron D Erlich
- Department of Chemistry and Biology, Ryerson University, 350 Victoria Street, Toronto, Ontario, M5B 2K3, Canada.
| | - Nicholas P Dogantzis
- Department of Chemistry and Biology, Ryerson University, 350 Victoria Street, Toronto, Ontario, M5B 2K3, Canada.
| | - Lara Al Nubani
- Department of Chemistry and Biology, Ryerson University, 350 Victoria Street, Toronto, Ontario, M5B 2K3, Canada.
| | - Lavinia A Trifoi
- Department of Chemistry and Biology, Ryerson University, 350 Victoria Street, Toronto, Ontario, M5B 2K3, Canada.
| | - Gregory K Hodgson
- Department of Chemistry and Biology, Ryerson University, 350 Victoria Street, Toronto, Ontario, M5B 2K3, Canada.
| | - Stefania Impellizzeri
- Department of Chemistry and Biology, Ryerson University, 350 Victoria Street, Toronto, Ontario, M5B 2K3, Canada.
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8
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Zhang Y, Zheng Y, Meana Y, Raymo FM. BODIPYs with Photoactivatable Fluorescence. Chemistry 2021; 27:11257-11267. [PMID: 34062023 DOI: 10.1002/chem.202101628] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Indexed: 12/11/2022]
Abstract
The borondipyrromethene (BODIPY) chromophore is a versatile platform for the construction of photoresponsive dyes with unique properties. Specifically, its covalent connection to a photocleavable group can be exploited to engineer compounds with photoswitchable fluorescence. The resulting photoactivatable fluorophores can increase their emission intensity or shift their emission wavelengths in response to switching. Such changes permit the spatiotemporal control of fluorescence with optical stimulations and the implementation of imaging strategies that would be impossible to replicate with conventional fluorophores. Indeed, BODIPYs with photoactivatable fluorescence enable the selective highlighting of intracellular targets, the nanoscaled visualization of sub-cellular components, the real-time monitoring of dynamic events and the photochemical writing of optical barcodes.
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Affiliation(s)
- Yang Zhang
- Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
| | - Yeting Zheng
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL 33146, USA
| | - Yasniel Meana
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL 33146, USA
| | - Françisco M Raymo
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL 33146, USA
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9
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Shieh P, Hill MR, Zhang W, Kristufek SL, Johnson JA. Clip Chemistry: Diverse (Bio)(macro)molecular and Material Function through Breaking Covalent Bonds. Chem Rev 2021; 121:7059-7121. [PMID: 33823111 DOI: 10.1021/acs.chemrev.0c01282] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In the two decades since the introduction of the "click chemistry" concept, the toolbox of "click reactions" has continually expanded, enabling chemists, materials scientists, and biologists to rapidly and selectively build complexity for their applications of interest. Similarly, selective and efficient covalent bond breaking reactions have provided and will continue to provide transformative advances. Here, we review key examples and applications of efficient, selective covalent bond cleavage reactions, which we refer to herein as "clip reactions." The strategic application of clip reactions offers opportunities to tailor the compositions and structures of complex (bio)(macro)molecular systems with exquisite control. Working in concert, click chemistry and clip chemistry offer scientists and engineers powerful methods to address next-generation challenges across the chemical sciences.
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Affiliation(s)
- Peyton Shieh
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Megan R Hill
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Wenxu Zhang
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Samantha L Kristufek
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Jeremiah A Johnson
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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10
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Golian KP, Akari AS, Hodgson GK, Impellizzeri S. Fluorescence activation, patterning and enhancement with photogenerated radicals, a prefluorescent probe and silver nanostructures. RSC Adv 2021. [DOI: 10.1039/d0ra09565f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
We designed a switchable fluorophore activated by UVA light and a radical initiator, for optical lithography with concomitant metal-enhanced fluorescence by silver nanoparticles.
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Affiliation(s)
- Karol P. Golian
- Laboratory for Nanomaterials and Molecular Plasmonics
- Department of Chemistry and Biology
- Ryerson University
- Toronto
- Canada
| | - Aviya S. Akari
- Laboratory for Nanomaterials and Molecular Plasmonics
- Department of Chemistry and Biology
- Ryerson University
- Toronto
- Canada
| | - Gregory K. Hodgson
- Laboratory for Nanomaterials and Molecular Plasmonics
- Department of Chemistry and Biology
- Ryerson University
- Toronto
- Canada
| | - Stefania Impellizzeri
- Laboratory for Nanomaterials and Molecular Plasmonics
- Department of Chemistry and Biology
- Ryerson University
- Toronto
- Canada
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11
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Casimiro L, Maisonneuve S, Retailleau P, Silvi S, Xie J, Métivier R. Photophysical Properties of 4-Dicyanomethylene-2-methyl-6-(p-dimethylamino-styryl)-4H-pyran Revisited: Fluorescence versus Photoisomerization. Chemistry 2020; 26:14341-14350. [PMID: 32652655 DOI: 10.1002/chem.202002828] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Indexed: 11/08/2022]
Abstract
Although 4-dicyanomethylene-2-methyl-6-(p-dimethylamino-styryl)-4H-pyran (DCM) has been known for many decades as a bright and photostable fluorophore, used for a wide variety of applications in chemistry, biology and physics, only little attention has been paid so far to the presence of multiple isomers and conformers, namely s-trans-(E), s-cis-(E), s-trans-(Z), and s-cis-(Z). In particular, light-induced E-Z isomerization plays a great role on the overall photophysical properties of DCM. Herein, we give a full description of a photoswitchable DCM derivative by a combination of structural, theoretical and spectroscopic methods. The main s-trans-(E) isomer is responsible for most of the fluorescence features, whereas the s-cis-(E) conformer only contributes marginally. The non-emitting Z isomers are generated in large conversion yields upon illumination with visible light (e.g., 485 or 514 nm) and converted back to the E forms by UV irradiation (e.g., 365 nm). Such photoswitching is efficient and reversible, with high fatigue resistance. The E→Z and Z→E photoisomerization quantum yields were determined in different solvents and at different irradiation wavelengths. Interestingly, the fluorescence and photoisomerization properties are strongly influenced by the solvent polarity: the fluorescence is predominant at higher polarity, whereas photoisomerization becomes more efficient at lower polarity. Intermediate medium (THF) represents an optimized situation with a good balance between these two features.
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Affiliation(s)
- Lorenzo Casimiro
- ENS Paris-Saclay, CNRS, PPSM, Université Paris-Saclay, 91190, Gif-sur-Yvette, France.,CLAN-Center for Light Activated Nanostructures, Università di Bologna and Consiglio Nazionale delle Ricerche, Via Gobetti 101, 40129, Bologna, Italy.,Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via Selmi 2, 40126, Bologna, Italy
| | - Stéphane Maisonneuve
- ENS Paris-Saclay, CNRS, PPSM, Université Paris-Saclay, 91190, Gif-sur-Yvette, France
| | - Pascal Retailleau
- ICSN, CNRS UPR 2301, Université Paris-Saclay, Gif-Sur-Yvette, 91198, France
| | - Serena Silvi
- CLAN-Center for Light Activated Nanostructures, Università di Bologna and Consiglio Nazionale delle Ricerche, Via Gobetti 101, 40129, Bologna, Italy.,Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via Selmi 2, 40126, Bologna, Italy
| | - Juan Xie
- ENS Paris-Saclay, CNRS, PPSM, Université Paris-Saclay, 91190, Gif-sur-Yvette, France
| | - Rémi Métivier
- ENS Paris-Saclay, CNRS, PPSM, Université Paris-Saclay, 91190, Gif-sur-Yvette, France
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12
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Far-red photoactivatable BODIPYs for the super-resolution imaging of live cells. Methods Enzymol 2020. [PMID: 32560795 DOI: 10.1016/bs.mie.2020.04.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
The identification of viable designs to construct switchable fluorescent probes and operate them in the interior of live cells is essential to allow the acquisition of SMLM images and permit the visualization of cellular components with sub-diffraction resolution. Our laboratories developed a mechanism to switch the fluorescence of BODIPY chromophores with the photoinduced cleavage of oxazine heterocycles under mild 405-nm illumination. With appropriate structural modifications, these switchable molecules can be engineered to immobilize covalently on large biomolecules within lysosomal compartments of live COS-7 cells and produce bright far-red fluorescence with optimal contrast upon activation. Such a combination of properties permits the acquisition of PALM images of the labeled organelles with localization precision of ca. 15nm. This article reports the experimental protocols for the synthesis of and live-cell labeling with these compounds as well as for the reconstruction of super-resolution images of the resulting biological preparations.
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13
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Zhang Y, Raymo FM. Photoactivatable fluorophores for single-molecule localization microscopy of live cells. Methods Appl Fluoresc 2020; 8:032002. [PMID: 32325443 DOI: 10.1088/2050-6120/ab8c5c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Photochemical reactions can be designed to convert either irreversibly or reversibly a nonemissive reactant into an emissive product. The irreversible disconnection of a photocleavable group from an emissive chromophore or the reversible interconversion of a photochromic component is generally exploited to implement these operating principles for fluorescence switching. In both instances, the interplay of activating radiation, to convert the nonemissive state into the emissive species, and exciting radiation, to produce fluorescence from the latter, can be exploited to switch fluorescence on in a given area of interest at a precise interval of time. Such a level of spatiotemporal control provides the opportunity to reconstruct sub-diffraction images with resolution at the nanometer level. Indeed, closely-spaced emitters can be switched on under photochemical control at distinct intervals of time and localized independently at the single-molecule level. In combination with appropriate intracellular targeting strategies, some of these photoactivatable fluorophores can be switched and localized inside live cells to permit the visualization of sub-cellular structures with a spatial resolution that would be impossible to achieve with conventional fluorophores. As a result, photoactivatable fluorophores can become invaluable probes for the implementation of super-resolution imaging schemes aimed at the elucidation of the fundamental factors controlling cellular functions at the molecular level.
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Affiliation(s)
- Yang Zhang
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, Coral Gables, FL, United States of America
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14
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Dogantzis NP, Hodgson GK, Impellizzeri S. Optical writing and single molecule reading of photoactivatable and silver nanoparticle-enhanced fluorescence. NANOSCALE ADVANCES 2020; 2:1956-1966. [PMID: 36132516 PMCID: PMC9418025 DOI: 10.1039/d0na00049c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 02/28/2020] [Indexed: 05/27/2023]
Abstract
We designed a hybrid nanoparticle-molecular system composed of silver nanostructures (AgNP) and a fluorogenic boron dipyrromethene (BODIPY) that can be selectively activated by UVA or UVC light in the presence of an appropriate photoacid generator (PAG). Light irradiation of the PAG encourages the release of p-toluenesulfonic, triflic or hydrobromic acid, any of which facilitate optical 'writing' by promoting the formation of a fluorescent species. Metal-enhanced fluorescence (MEF) by AgNP was achieved through rational design of the nano-molecular system in accordance with the principles of radiative decay engineering. In addition to increasing signal to noise, AgNP permitted shorter reaction times and low irradiance - all of which have important implications for applications of fluorescence activation in portable fluorescence patterning, bioimaging and super-resolution microscopy. Single molecule fluorescence microscopy provided unique insights into the MEF mechanism which were hidden by ensemble-averaged measurements, demonstrating that single molecule 'reading' is a valuable tool for characterizing particle-molecule interactions such as those responsible for the relative contributions of increased excitation and plasmophoric emission toward overall MEF. This work represents a step forward in the contemporary design of synergistic nano-molecular systems, and showcases the advantage of fusion between classic spectroscopic techniques and single molecule methods in terms of improved quantitative understanding of fluorophore-nanoparticle interactions, and how these interactions can be exploited to the fullest extent possible.
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Affiliation(s)
- Nicholas P Dogantzis
- Laboratory for Nanomaterials and Molecular Plasmonics, Department of Chemistry and Biology, Ryerson University 350 Victoria St. Toronto ON M5B 2K3 Canada
| | - Gregory K Hodgson
- Laboratory for Nanomaterials and Molecular Plasmonics, Department of Chemistry and Biology, Ryerson University 350 Victoria St. Toronto ON M5B 2K3 Canada
| | - Stefania Impellizzeri
- Laboratory for Nanomaterials and Molecular Plasmonics, Department of Chemistry and Biology, Ryerson University 350 Victoria St. Toronto ON M5B 2K3 Canada
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15
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Zhang Y, Raymo FM. Live-Cell Imaging at the Nanoscale with Bioconjugatable and Photoactivatable Fluorophores. Bioconjug Chem 2020; 31:1052-1062. [PMID: 32150390 DOI: 10.1021/acs.bioconjchem.0c00073] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Optical diffraction fundamentally limits the spatial resolution of conventional fluorescence images to length scales that are, at least, 2 orders of magnitude longer than the dimensions of individual molecules. As a result, the development of innovative probes and imaging schemes to overcome diffraction is very much needed to enable the investigation of the fundamental factors regulating cellular functions at the molecular level. In this context, the chemical synthesis of molecular constructs with photoactivatable fluorescence and the ability to label subcellular components of live cells can have transformative implications. Indeed, the fluorescence of the resulting assemblies can be activated with spatiotemporal control, even in the intracellular environment, to permit the sequential localization of individual emissive labels with precision at the nanometer level and the gradual reconstruction of images with subdiffraction resolution. The implementation of these operating principles for subdiffraction imaging, however, is only possible if demanding photochemical and photophysical requirements to enable photoactivation and localization as well as stringent structural requisites to allow the covalent labeling of intracellular targets in live cells are satisfied. Because of these complications, only a few synthetic photoactivatable fluorophores with appropriate performance for live-cell imaging at the nanoscale have been developed so far. Significant synthetic efforts in conjunction with spectroscopic analyses are still very much needed to advance this promising research area further and turn photoactivatable fluorophores into the imaging probes of choice for the investigation of live cells.
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Affiliation(s)
- Yang Zhang
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, Coral Gables, Florida 33146-0431, United States
| | - Françisco M Raymo
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, Coral Gables, Florida 33146-0431, United States
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16
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Thapaliya ER, Mazza MMA, Cusido J, Baker JD, Raymo FM. A Synthetic Strategy for the Structural Modification of Photoactivatable BODIPY‐Oxazine Dyads. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.201900276] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ek Raj Thapaliya
- Laboratory for Molecular Photonics Departments of Biology and Chemistry University of Miami 1301 Memorial Drive Coral Gables FL 33146-0431 USA
| | - Mercedes M. A. Mazza
- Laboratory for Molecular Photonics Departments of Biology and Chemistry University of Miami 1301 Memorial Drive Coral Gables FL 33146-0431 USA
| | - Janet Cusido
- Laboratory for Molecular Photonics Departments of Biology and Chemistry University of Miami 1301 Memorial Drive Coral Gables FL 33146-0431 USA
- Department of Math and Natural Sciences Miami Dade College – Eduardo J. Padron Campus Miami USA
| | - James D. Baker
- Laboratory for Molecular Photonics Departments of Biology and Chemistry University of Miami 1301 Memorial Drive Coral Gables FL 33146-0431 USA
| | - Françisco M. Raymo
- Laboratory for Molecular Photonics Departments of Biology and Chemistry University of Miami 1301 Memorial Drive Coral Gables FL 33146-0431 USA
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17
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Xie S, Proietti G, Ramström O, Yan M. Photoactivatable Fluorogens by Intramolecular C-H Insertion of Perfluoroaryl Azide. J Org Chem 2019; 84:14520-14528. [PMID: 31589042 DOI: 10.1021/acs.joc.9b02050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Molecules, capable of fluorescence turn-on by light, are highly sought-after in spatio-temporal labeling, surface patterning, monitoring cellular and molecular events, and high-resolution fluorescence imaging. In this work, we report a fluorescence turn-on system based on photoinitiated intramolecular C-H insertion of azide into the neighboring aromatic ring. The azide-masked fluorogens were efficiently synthesized via a cascade nucleophilic aromatic substitution of perfluoroaryl azides with carbazoles. The scaffold also allows for derivatization with biological ligands, as exemplified with d-mannose in this study. This photoinitiated intramolecular transformation led to high yields, high photo-conversion efficiency, and well-separated wavelengths for photoactivation and fluorescence excitation. The mannose-derivatized structure enabled spatio-temporal activation and showed high contrast and signal amplification. Live cell imaging suggested that the mannose-tagged fluorogen was transported to the lysosomes.
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Affiliation(s)
- Sheng Xie
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , 410082 Changsha , P. R. China.,Department of Chemistry , KTH-Royal Institute of Technology , Teknikringen 36 , SE-100 44 Stockholm , Sweden
| | - Giampiero Proietti
- Department of Chemistry , KTH-Royal Institute of Technology , Teknikringen 36 , SE-100 44 Stockholm , Sweden
| | - Olof Ramström
- Department of Chemistry , KTH-Royal Institute of Technology , Teknikringen 36 , SE-100 44 Stockholm , Sweden.,Department of Chemistry , University of Massachusetts Lowell , Lowell , Massachusetts 01854 , United States.,Department of Chemistry and Biomedical Sciences , Linnaeus University , SE-39182 Kalmar , Sweden
| | - Mingdi Yan
- Department of Chemistry , University of Massachusetts Lowell , Lowell , Massachusetts 01854 , United States
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18
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Frei MS, Hoess P, Lampe M, Nijmeijer B, Kueblbeck M, Ellenberg J, Wadepohl H, Ries J, Pitsch S, Reymond L, Johnsson K. Photoactivation of silicon rhodamines via a light-induced protonation. Nat Commun 2019; 10:4580. [PMID: 31594948 PMCID: PMC6783549 DOI: 10.1038/s41467-019-12480-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 09/13/2019] [Indexed: 12/17/2022] Open
Abstract
Photoactivatable fluorophores are important for single-particle tracking and super-resolution microscopy. Here we present a photoactivatable fluorophore that forms a bright silicon rhodamine derivative through a light-dependent protonation. In contrast to other photoactivatable fluorophores, no caging groups are required, nor are there any undesired side-products released. Using this photoactivatable fluorophore, we create probes for HaloTag and actin for live-cell single-molecule localization microscopy and single-particle tracking experiments. The unusual mechanism of photoactivation and the fluorophore's outstanding spectroscopic properties make it a powerful tool for live-cell super-resolution microscopy.
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Affiliation(s)
- Michelle S Frei
- Department of Chemical Biology, Max Planck Institute for Medical Research, Jahnstrasse 29, 69120, Heidelberg, Germany
- Institute of Chemical Sciences and Engineering (ISIC), École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Philipp Hoess
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117, Heidelberg, Germany
- Collaboration for joint PhD degree between EMBL and Heidelberg University, Faculty of Biosciences, Heidelberg, Germany
| | - Marko Lampe
- Advanced Light Microscopy Facility (ALMF), European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117, Heidelberg, Germany
| | - Bianca Nijmeijer
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117, Heidelberg, Germany
| | - Moritz Kueblbeck
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117, Heidelberg, Germany
| | - Jan Ellenberg
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117, Heidelberg, Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut, University of Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Jonas Ries
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117, Heidelberg, Germany
| | - Stefan Pitsch
- Spirochrome AG, Chalberweidstrasse 4, CH-8260, Stein am Rhein, Switzerland
| | - Luc Reymond
- Biomolecular Screening Facility, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland.
- National Centre of Competence in Research (NCCR) in Chemical Biology, 1015, Lausanne, Switzerland.
| | - Kai Johnsson
- Department of Chemical Biology, Max Planck Institute for Medical Research, Jahnstrasse 29, 69120, Heidelberg, Germany.
- Institute of Chemical Sciences and Engineering (ISIC), École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland.
- National Centre of Competence in Research (NCCR) in Chemical Biology, 1015, Lausanne, Switzerland.
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19
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Jang Y, Kim TI, Kim H, Choi Y, Kim Y. Photoactivatable BODIPY Platform: Light-Triggered Anticancer Drug Release and Fluorescence Monitoring. ACS APPLIED BIO MATERIALS 2019; 2:2567-2572. [DOI: 10.1021/acsabm.9b00259] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yul Jang
- Department of Chemistry and Research Institute of Basic Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea
| | - Tae-Il Kim
- Department of Chemistry and Research Institute of Basic Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea
| | - Hyunjin Kim
- National Cancer Center, 323 Ilsan-ro, Goyang-si, Gyeonggi-do 10408, Korea
| | - Yongdoo Choi
- National Cancer Center, 323 Ilsan-ro, Goyang-si, Gyeonggi-do 10408, Korea
| | - Youngmi Kim
- Department of Chemistry and Research Institute of Basic Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea
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20
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Wang L, Frei MS, Salim A, Johnsson K. Small-Molecule Fluorescent Probes for Live-Cell Super-Resolution Microscopy. J Am Chem Soc 2019; 141:2770-2781. [PMID: 30550714 DOI: 10.1021/jacs.8b11134] [Citation(s) in RCA: 295] [Impact Index Per Article: 59.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Super-resolution fluorescence microscopy is a powerful tool to visualize biomolecules and cellular structures at the nanometer scale. Employing these techniques in living cells has opened up the possibility to study dynamic processes with unprecedented spatial and temporal resolution. Different physical approaches to super-resolution microscopy have been introduced over the last years. A bottleneck to apply these approaches for live-cell imaging has become the availability of appropriate fluorescent probes that can be specifically attached to biomolecules. In this Perspective, we discuss the role of small-molecule fluorescent probes for live-cell super-resolution microscopy and the challenges that need to be overcome for their generation. Recent trends in the development of labeling strategies are reviewed together with the required chemical and spectroscopic properties of the probes. Finally, selected examples of the use of small-molecule fluorescent probes in live-cell super-resolution microscopy are given.
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Affiliation(s)
- Lu Wang
- Department of Chemical Biology , Max Planck Institute for Medical Research , Jahnstrasse 29 , 69120 Heidelberg , Germany
| | - Michelle S Frei
- Department of Chemical Biology , Max Planck Institute for Medical Research , Jahnstrasse 29 , 69120 Heidelberg , Germany.,Institute of Chemical Sciences and Engineering (ISIC), École Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
| | - Aleksandar Salim
- Department of Chemical Biology , Max Planck Institute for Medical Research , Jahnstrasse 29 , 69120 Heidelberg , Germany.,Institute of Chemical Sciences and Engineering (ISIC), École Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
| | - Kai Johnsson
- Department of Chemical Biology , Max Planck Institute for Medical Research , Jahnstrasse 29 , 69120 Heidelberg , Germany.,Institute of Chemical Sciences and Engineering (ISIC), École Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
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21
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Sansalone L, Tang S, Garcia-Amorós J, Zhang Y, Nonell S, Baker JD, Captain B, Raymo FM. A Photoactivatable Far-Red/Near-Infrared BODIPY To Monitor Cellular Dynamics in Vivo. ACS Sens 2018; 3:1347-1353. [PMID: 29863337 DOI: 10.1021/acssensors.8b00262] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A mechanism to photoactivate far-red/near-infrared fluorescence with infinite contrast and under mild visible illumination was designed around the photophysical properties of borondipyrromethene (BODIPY) dyes and the photochemical behavior of oxazine heterocycles. Specifically, the photoinduced and irreversible cleavage of an oxazine ring with a laser line at 405 nm extends the electronic conjugation of a BODIPY chromophore over a 3 H-indole auxochrome with a 2-(4-methoxyphenyl)ethenyl substituent in position 5. This structural transformation shifts bathochromically the main absorption band of the BODIPY component to allow the selective excitation of the photochemical product with a laser line of 633 nm and produce fluorescence between 600 and 850 nm. This combination of activation, excitation, and emission wavelengths permits the visualization of the cellular blastoderm of developing Drosophila melanogaster embryos with optimal contrast and essentially no autofluorescence from the biological specimen. Furthermore, the sequential acquisition of images, after the photoactivation event, enables the tracking of individual cells within the embryos in real time. Thus, our structural design and operating principles for the photoactivation of far-red/near-infrared fluorescence can evolve into invaluable probes to monitor cellular dynamics in vivo.
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Affiliation(s)
- Lorenzo Sansalone
- Laboratory for Molecular Photonics, Departments of Biology and Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - Sicheng Tang
- Laboratory for Molecular Photonics, Departments of Biology and Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - Jaume Garcia-Amorós
- Grup de Materials Orgànics, Institut de Nanociència i Nanotecnologia (IN2UB), Departament de Química Inorgànica i Orgànica (Secció de Química Orgànica), Universitat de Barcelona, Martí i Franqués 1, E-08028, Barcelona, Spain
| | - Yang Zhang
- Laboratory for Molecular Photonics, Departments of Biology and Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - Santi Nonell
- Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, E-08017, Barcelona, Spain
| | - James D. Baker
- Laboratory for Molecular Photonics, Departments of Biology and Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - Burjor Captain
- Laboratory for Molecular Photonics, Departments of Biology and Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - Françisco M. Raymo
- Laboratory for Molecular Photonics, Departments of Biology and Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
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22
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Tang S, Zhang Y, Dhakal P, Ravelo L, Anderson CL, Collins KM, Raymo FM. Photochemical Barcodes. J Am Chem Soc 2018; 140:4485-4488. [PMID: 29561604 PMCID: PMC6056178 DOI: 10.1021/jacs.8b00887] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A photochemical strategy to encode fluorescence signals in vivo with spatial control was designed around the unique properties of a photoactivatable borondipyrromethene (BODIPY). The photoinduced disconnection of two oxazines, flanking a single BODIPY, in two consecutive steps produces a mixture of three emissive molecules with resolved fluorescence inside polymer beads. The relative amounts and emission intensities of the three fluorophores can be regulated precisely in each bead by adjusting the dose of activating photons to mark individual particles with distinct codes of fluorescence signals. The visible wavelengths and mild illumination sufficient to induce these transformations permit the photochemical barcoding of beads also in living nematodes. Different regions of the same animal can be labeled with distinct barcodes to allow the monitoring of their dynamics for long times with no toxic effects. Thus, our photochemical strategy for the generation of fluorescence barcodes can produce multiple and distinguishable labels in the same biological sample to enable the spatiotemporal tracking of, otherwise indistinguishable, targets.
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Affiliation(s)
| | | | | | - Laura Ravelo
- Laboratory for Molecular Photonics, Departments of Biology and Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - Cheyenne L. Anderson
- Laboratory for Molecular Photonics, Departments of Biology and Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - Kevin M. Collins
- Laboratory for Molecular Photonics, Departments of Biology and Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - Françisco M. Raymo
- Laboratory for Molecular Photonics, Departments of Biology and Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
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23
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Toivola R, Jang SH, Mannikko D, Stoll S, Jen AKY, Flinn BD. Photochemical changes in absorption and fluorescence of DDM-containing epoxies. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.03.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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24
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Thum MD, Falvey DE. Photoreleasable Protecting Groups Triggered by Sequential Two-Photon Absorption of Visible Light: Release of Carboxylic Acids from a Linked Anthraquinone-N-Alkylpicolinium Ester Molecule. J Phys Chem A 2018. [DOI: 10.1021/acs.jpca.8b00657] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Matthew D. Thum
- University of Maryland, College Park, Maryland 20742, United States
| | - Daniel E. Falvey
- University of Maryland, College Park, Maryland 20742, United States
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25
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Zhang Y, Tang S, Thapaliya ER, Sansalone L, Raymo FM. Fluorescence activation with switchable oxazines. Chem Commun (Camb) 2018; 54:8799-8809. [DOI: 10.1039/c8cc03094d] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Activatable fluorophores allow the spatiotemporal control of fluorescence required to acquire subdiffraction images, highlight cancer cells and monitor dynamic events
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Affiliation(s)
- Yang Zhang
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | - Sicheng Tang
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | - Ek Raj Thapaliya
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | - Lorenzo Sansalone
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | - Françisco M. Raymo
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
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26
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Fluorescence activation with the plasmonic assistance of silver nanoparticles. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.05.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Hauke S, von Appen A, Quidwai T, Ries J, Wombacher R. Specific protein labeling with caged fluorophores for dual-color imaging and super-resolution microscopy in living cells. Chem Sci 2017; 8:559-566. [PMID: 28451202 PMCID: PMC5351804 DOI: 10.1039/c6sc02088g] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 09/01/2016] [Indexed: 01/10/2023] Open
Abstract
We present new fluorophore-conjugates for dual-color photoactivation and super-resolution imaging inside live mammalian cells. These custom-designed, photo-caged Q-rhodamines and fluoresceins are cell-permeable, bright and localize specifically to intracellular targets. We utilized established orthogonal protein labeling strategies to precisely attach the photoactivatable fluorophores to proteins with subsequent activation of fluorescence by irradiation with UV light. That way, diffusive cytosolic proteins, histone proteins as well as filigree mitochondrial networks and focal adhesion proteins were visualized inside living cells. We applied the new photoactivatable probes in inverse fluorescence recovery after photo-bleaching (iFRAP) experiments, gaining real-time access to protein dynamics from live biological settings with resolution in space and time. Finally, we used the caged Q-rhodamine for photo-activated localization microscopy (PALM) on both fixed and live mammalian cells, where the superior molecular brightness and photo-stability directly resulted in improved localization precisions for different protein targets.
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Affiliation(s)
- Sebastian Hauke
- Institute of Pharmacy and Molecular Biotechnology , Ruprecht-Karls-University Heidelberg , Im Neuenheimer Feld 364 , 69120 Heidelberg , Germany . ; ; Tel: +49 6221 544879
| | - Alexander von Appen
- Institute of Pharmacy and Molecular Biotechnology , Ruprecht-Karls-University Heidelberg , Im Neuenheimer Feld 364 , 69120 Heidelberg , Germany . ; ; Tel: +49 6221 544879
| | - Tooba Quidwai
- European Molecular Biology Laboratory , Meyerhofstraße 1 , 69117 Heidelberg , Germany
| | - Jonas Ries
- European Molecular Biology Laboratory , Meyerhofstraße 1 , 69117 Heidelberg , Germany
| | - Richard Wombacher
- Institute of Pharmacy and Molecular Biotechnology , Ruprecht-Karls-University Heidelberg , Im Neuenheimer Feld 364 , 69120 Heidelberg , Germany . ; ; Tel: +49 6221 544879
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28
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Klötzner DP, Klehs K, Heilemann M, Heckel A. A new photoactivatable near-infrared-emitting QCy7 fluorophore for single-molecule super-resolution microscopy. Chem Commun (Camb) 2017; 53:9874-9877. [DOI: 10.1039/c7cc04996j] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In this work we present a new photoactivatable QCy7-based fluorophore and demonstrate its application in single-molecule super-resolution microscopy.
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Affiliation(s)
- Dean-Paulos Klötzner
- Goethe University Frankfurt
- Institute of Organic Chemistry and Chemical Biology
- 60438 Frankfurt
- Germany
| | - Kathrin Klehs
- Goethe University Frankfurt
- Institute of Physical and Theoretical Chemistry
- 60438 Frankfurt
- Germany
| | - Mike Heilemann
- Goethe University Frankfurt
- Institute of Physical and Theoretical Chemistry
- 60438 Frankfurt
- Germany
| | - Alexander Heckel
- Goethe University Frankfurt
- Institute of Organic Chemistry and Chemical Biology
- 60438 Frankfurt
- Germany
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29
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Thapaliya ER, Garcia-Amorós J, Nonell S, Captain B, Raymo FM. Structural implications on the excitation dynamics of fluorescent 3H-indolium cations. Phys Chem Chem Phys 2017; 19:11904-11913. [DOI: 10.1039/c7cp01841j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Conformational changes in the excited state control the excitation dynamics of fluorescent 3H-indolium cations.
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Affiliation(s)
- Ek Raj Thapaliya
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | - Jaume Garcia-Amorós
- Grup de Materials Orgànics
- Institut de Nanociència i Nanotecnologia (IN2UB)
- Departament de Química Inorgànica i Orgànica (Secció de Química Orgànica)
- Universitat de Barcelona
- Barcelona
| | - Santi Nonell
- Grup d'Enginyeria Molecular
- Institut Químic de Sarrià
- Universitat Ramón Llull
- Barcelona
- Spain
| | - Burjor Captain
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | - Françisco M. Raymo
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
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30
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Zhou X, Jiang Y, Zhao X, Guo D. ESIPT-Based Photoactivatable Fluorescent Probe for Ratiometric Spatiotemporal Bioimaging. SENSORS 2016; 16:s16101684. [PMID: 27754338 PMCID: PMC5087472 DOI: 10.3390/s16101684] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 09/20/2016] [Accepted: 09/22/2016] [Indexed: 11/16/2022]
Abstract
Photoactivatable fluorophores have become an important technique for the high spatiotemporal resolution of biological imaging. Here, we developed a novel photoactivatable probe (PHBT), which is based on 2-(2-hydroxyphenyl)benzothiazole (HBT), a small organic fluorophore known for its classic luminescence mechanism through excited-state intramolecular proton transfer (ESIPT) with the keto form and the enol form. After photocleavage, PHBT released a ratiometric fluorophore HBT, which showed dual emission bands with more than 73-fold fluorescence enhancement at 512 nm in buffer and more than 69-fold enhancement at 452 nm in bovine serum. The probe displayed a high ratiometric imaging resolution and is believed to have a wide application in biological imaging.
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Affiliation(s)
- Xiaohong Zhou
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
- Environment Monitoring Department, Changsha Environmental Protection College, Changsha 410004, China.
| | - Yuren Jiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
| | - Xiongjie Zhao
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
| | - Dong Guo
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
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31
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Gu X, Zhao E, Lam JWY, Peng Q, Xie Y, Zhang Y, Wong KS, Sung HHY, Williams ID, Tang BZ. Mitochondrion-Specific Live-Cell Bioprobe Operated in a Fluorescence Turn-On Manner and a Well-Designed Photoactivatable Mechanism. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:7093-7100. [PMID: 26445398 DOI: 10.1002/adma.201503751] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 09/04/2015] [Indexed: 06/05/2023]
Abstract
A novel mitochondrion-specific live-cell fluorescence turn-on photoactivatable bioprobe, named o-TPP3M, is designed and readily prepared, operating in a new photoactivatable mechanism based on a twisted intramolecular charge-transfer effect, the restriction of intramolecular rotations, and photocyclodehydrogenation. This bioprobe exhibits unique photoactivation behavior, a large signal-to-background ratio, and no cytotoxicity to living cells, providing a promising candidate for varied bioresearch.
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Affiliation(s)
- Xinggui Gu
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-Tech Park, Nanshan, Shenzhen, 518057, China
- Departments of Chemistry, Physics, and Division of Life Science, Institute of Molecular Functional Materials and Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Engui Zhao
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-Tech Park, Nanshan, Shenzhen, 518057, China
- Departments of Chemistry, Physics, and Division of Life Science, Institute of Molecular Functional Materials and Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jacky W Y Lam
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-Tech Park, Nanshan, Shenzhen, 518057, China
- Departments of Chemistry, Physics, and Division of Life Science, Institute of Molecular Functional Materials and Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Qian Peng
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yujun Xie
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yilin Zhang
- Departments of Chemistry, Physics, and Division of Life Science, Institute of Molecular Functional Materials and Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Kam Sing Wong
- Departments of Chemistry, Physics, and Division of Life Science, Institute of Molecular Functional Materials and Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Herman H Y Sung
- Departments of Chemistry, Physics, and Division of Life Science, Institute of Molecular Functional Materials and Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ian D Williams
- Departments of Chemistry, Physics, and Division of Life Science, Institute of Molecular Functional Materials and Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ben Zhong Tang
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-Tech Park, Nanshan, Shenzhen, 518057, China
- Departments of Chemistry, Physics, and Division of Life Science, Institute of Molecular Functional Materials and Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- Guangdong Innovative Research Team, SCUT-HKUST Joint Research Laboratory, State Key Laboratory of Luminescent Materials and Device, South China University of Technology, Guangzhou, 51640, China
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32
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Sednev MV, Belov VN, Hell SW. Fluorescent dyes with large Stokes shifts for super-resolution optical microscopy of biological objects: a review. Methods Appl Fluoresc 2015; 3:042004. [DOI: 10.1088/2050-6120/3/4/042004] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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33
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Zhou L, Zhang X, Lv Y, Yang C, Lu D, Wu Y, Chen Z, Liu Q, Tan W. Localizable and Photoactivatable Fluorophore for Spatiotemporal Two-Photon Bioimaging. Anal Chem 2015; 87:5626-31. [DOI: 10.1021/acs.analchem.5b00691] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Liyi Zhou
- Molecular
Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, and Collaborative Research Center of Molecular Engineering
for Theranostics, Hunan University, Changsha 410082, China
| | - Xiaobing Zhang
- Molecular
Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, and Collaborative Research Center of Molecular Engineering
for Theranostics, Hunan University, Changsha 410082, China
| | - Yifan Lv
- Molecular
Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, and Collaborative Research Center of Molecular Engineering
for Theranostics, Hunan University, Changsha 410082, China
| | - Chao Yang
- Molecular
Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, and Collaborative Research Center of Molecular Engineering
for Theranostics, Hunan University, Changsha 410082, China
| | - Danqing Lu
- Molecular
Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, and Collaborative Research Center of Molecular Engineering
for Theranostics, Hunan University, Changsha 410082, China
| | - Yuan Wu
- Molecular
Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, and Collaborative Research Center of Molecular Engineering
for Theranostics, Hunan University, Changsha 410082, China
- Department
of Chemistry, Department of Physiology and Functional Genomics, Center
for Research at Bio/Nano Interface, Shands Cancer Center, University
of Florida Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Zhuo Chen
- Molecular
Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, and Collaborative Research Center of Molecular Engineering
for Theranostics, Hunan University, Changsha 410082, China
| | - Qiaoling Liu
- Molecular
Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, and Collaborative Research Center of Molecular Engineering
for Theranostics, Hunan University, Changsha 410082, China
| | - Weihong Tan
- Molecular
Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, and Collaborative Research Center of Molecular Engineering
for Theranostics, Hunan University, Changsha 410082, China
- Department
of Chemistry, Department of Physiology and Functional Genomics, Center
for Research at Bio/Nano Interface, Shands Cancer Center, University
of Florida Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida 32611-7200, United States
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34
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Zhang Y, Swaminathan S, Tang S, Garcia-Amorós J, Boulina M, Captain B, Baker JD, Raymo FM. Photoactivatable BODIPYs Designed To Monitor the Dynamics of Supramolecular Nanocarriers. J Am Chem Soc 2015; 137:4709-19. [DOI: 10.1021/ja5125308] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | | | | | | | - Marcia Boulina
- Analytical
Imaging Core Facility, Diabetes Research Institute, University of Miami, 1450 NW 10th Avenue, Miami, Florida 33136, United States
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35
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Impellizzeri S, Simoncelli S, Fasciani C, Luisa Marin M, Hallett-Tapley GL, Hodgson GK, Scaiano JC. Mechanistic insights into the Nb2O5 and niobium phosphate catalyzed in situ condensation of a fluorescent halochromic assembly. Catal Sci Technol 2015. [DOI: 10.1039/c4cy00703d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solid niobium oxides (Nb2O5·nH2O) and niobium phosphate were used as heterogeneous acid catalysts to promote the condensation between a switchable oxazine and a fluorescent coumarin in aprotic solvents.
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Affiliation(s)
- Stefania Impellizzeri
- Department of Chemistry
- Centre for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
| | - Sabrina Simoncelli
- Department of Chemistry
- Centre for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
| | - Chiara Fasciani
- Department of Chemistry
- Centre for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
| | - M. Luisa Marin
- Department of Chemistry
- Centre for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
| | | | - Gregory K. Hodgson
- Department of Chemistry
- Centre for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
| | - Juan C. Scaiano
- Department of Chemistry
- Centre for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
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36
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Friedrich F, Klehs K, Fichte MAH, Junek S, Heilemann M, Heckel A. A two-photon activatable amino acid linker for the induction of fluorescence. Chem Commun (Camb) 2015; 51:15382-5. [DOI: 10.1039/c5cc05700k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first photolabile quencher for ATTO565 is presented and the application of the new construct in super-resolution microscopy is demonstrated.
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Affiliation(s)
- Felix Friedrich
- Goethe University Frankfurt
- Institute for Organic Chemistry and Chemical Biology
- 60438 Frankfurt
- Germany
| | - Kathrin Klehs
- Goethe University Frankfurt
- Institute for Physical and Theoretical Chemistry
- 60438 Frankfurt
- Germany
| | - Manuela A. H. Fichte
- Goethe University Frankfurt
- Institute for Organic Chemistry and Chemical Biology
- 60438 Frankfurt
- Germany
| | - Stephan Junek
- Imaging facility
- Max Planck Institute for Brain Research
- 60438 Frankfurt am Main
- Germany
| | - Mike Heilemann
- Goethe University Frankfurt
- Institute for Physical and Theoretical Chemistry
- 60438 Frankfurt
- Germany
| | - Alexander Heckel
- Goethe University Frankfurt
- Institute for Organic Chemistry and Chemical Biology
- 60438 Frankfurt
- Germany
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37
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Ragab SS, Swaminathan S, Garcia-Amorós J, Captain B, Raymo FM. Bimolecular photoactivation of NBD fluorescence. NEW J CHEM 2015. [DOI: 10.1039/c4nj01983k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photoinduced deprotection of a nucleophilic species converts a nonemissive NBD chromophore into an emissive product and allows fluorescence activation under optical control.
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Affiliation(s)
- Sherif Shaban Ragab
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | - Subramani Swaminathan
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | - Jaume Garcia-Amorós
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | - Burjor Captain
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | - Françisco M. Raymo
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
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38
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Thapaliya ER, Swaminathan S, Captain B, Raymo FM. Autocatalytic Fluorescence Photoactivation. J Am Chem Soc 2014; 136:13798-804. [DOI: 10.1021/ja5068383] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Ek Raj Thapaliya
- Laboratory for Molecular
Photonics, Department of Chemistry, University of Miami, 1301 Memorial
Drive, Coral Gables, Florida 33146-0431, United States
| | - Subramani Swaminathan
- Laboratory for Molecular
Photonics, Department of Chemistry, University of Miami, 1301 Memorial
Drive, Coral Gables, Florida 33146-0431, United States
| | - Burjor Captain
- Laboratory for Molecular
Photonics, Department of Chemistry, University of Miami, 1301 Memorial
Drive, Coral Gables, Florida 33146-0431, United States
| | - Françisco M. Raymo
- Laboratory for Molecular
Photonics, Department of Chemistry, University of Miami, 1301 Memorial
Drive, Coral Gables, Florida 33146-0431, United States
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39
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Belov VN, Mitronova GY, Bossi ML, Boyarskiy VP, Hebisch E, Geisler C, Kolmakov K, Wurm CA, Willig KI, Hell SW. Masked rhodamine dyes of five principal colors revealed by photolysis of a 2-diazo-1-indanone caging group: synthesis, photophysics, and light microscopy applications. Chemistry 2014; 20:13162-73. [PMID: 25196166 DOI: 10.1002/chem.201403316] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Indexed: 12/17/2022]
Abstract
Caged rhodamine dyes (Rhodamines NN) of five basic colors were synthesized and used as "hidden" markers in subdiffractional and conventional light microscopy. These masked fluorophores with a 2-diazo-1-indanone group can be irreversibly photoactivated, either by irradiation with UV- or violet light (one-photon process), or by exposure to intense red light (λ∼750 nm; two-photon mode). All dyes possess a very small 2-diazoketone caging group incorporated into the 2-diazo-1-indanone residue with a quaternary carbon atom (C-3) and a spiro-9H-xanthene fragment. Initially they are non-colored (pale yellow), non-fluorescent, and absorb at λ=330-350 nm (molar extinction coefficient (ε)≈10(4) M(-1) cm(-1)) with a band edge that extends to about λ=440 nm. The absorption and emission bands of the uncaged derivatives are tunable over a wide range (λ=511-633 and 525-653 nm, respectively). The unmasked dyes are highly colored and fluorescent (ε=3-8×10(4) M(-1) cm(-1) and fluorescence quantum yields (ϕ)=40-85% in the unbound state and in methanol). By stepwise and orthogonal protection of carboxylic and sulfonic acid groups a highly water-soluble caged red-emitting dye with two sulfonic acid residues was prepared. Rhodamines NN were decorated with amino-reactive N-hydroxysuccinimidyl ester groups, applied in aqueous buffers, easily conjugated with proteins, and readily photoactivated (uncaged) with λ=375-420 nm light or intense red light (λ=775 nm). Protein conjugates with optimal degrees of labeling (3-6) were prepared and uncaged with λ=405 nm light in aqueous buffer solutions (ϕ=20-38%). The photochemical cleavage of the masking group generates only molecular nitrogen. Some 10-40% of the non-fluorescent (dark) byproducts are also formed. However, they have low absorbance and do not quench the fluorescence of the uncaged dyes. Photoactivation of the individual molecules of Rhodamines NN (e.g., due to reversible or irreversible transition to a "dark" non-emitting state or photobleaching) provides multicolor images with subdiffractional optical resolution. The applicability of these novel caged fluorophores in super-resolution optical microscopy is exemplified.
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Affiliation(s)
- Vladimir N Belov
- NanoBiophotonics Department, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen (Germany), Fax: (+49) 551-201-2505.
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40
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Garcia-Amorós J, Swaminathan S, Sortino S, Raymo FM. Plasmonic Activation of a Fluorescent Carbazole-Oxazine Switch. Chemistry 2014; 20:10276-84. [DOI: 10.1002/chem.201403509] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Indexed: 11/06/2022]
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41
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Cui Q, He F, Li L, Möhwald H. Controllable metal-enhanced fluorescence in organized films and colloidal system. Adv Colloid Interface Sci 2014; 207:164-77. [PMID: 24182686 DOI: 10.1016/j.cis.2013.10.011] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2013] [Revised: 10/10/2013] [Accepted: 10/10/2013] [Indexed: 12/28/2022]
Abstract
In recent years, considerable efforts have been devoted to better understand the unique emission properties of fluorophores enhanced by the localized surface plasmon resonance of metal nanoparticles (NPs), due to the widespread applications of fluorescence techniques. It is demonstrated by experiment and theoretical calculation that the enhancement efficiency strongly depends on the morphology of the metal NPs, the spectral overlap between metal and fluorophores, the separation distance between them, and other factors. Among these aspects to be considered are suitable spacer material and assembling methods to control the spatial arrangement of plasmonic NPs and fluorophore with proper optical properties and interactions. In this contribution, we provide a brief overview on recent progress of metal-enhanced fluorescence in organized films and colloidal systems.
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42
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Affiliation(s)
- Ek Raj Thapaliya
- Laboratory for Molecular
Photonics, Department of Chemistry, University of Miami, 1301 Memorial
Drive, Coral Gables, Florida 33146-0431, United States
| | - Burjor Captain
- Laboratory for Molecular
Photonics, Department of Chemistry, University of Miami, 1301 Memorial
Drive, Coral Gables, Florida 33146-0431, United States
| | - Françisco M. Raymo
- Laboratory for Molecular
Photonics, Department of Chemistry, University of Miami, 1301 Memorial
Drive, Coral Gables, Florida 33146-0431, United States
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43
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Kandoth N, Kirejev V, Monti S, Gref R, Ericson MB, Sortino S. Two-Photon Fluorescence Imaging and Bimodal Phototherapy of Epidermal Cancer Cells with Biocompatible Self-Assembled Polymer Nanoparticles. Biomacromolecules 2014; 15:1768-76. [DOI: 10.1021/bm500156z] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Noufal Kandoth
- Laboratory
of Photochemistry, Department of Drug Sciences, University of Catania, Viale Andrea Doria 6, I-95125 Catania, Italy
| | - Vladimir Kirejev
- Biomedical
Photonics Group, Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, SE-412 96 Gothenburg, Sweden
| | - Sandra Monti
- Istituto per la Sintesi Organica e la Fotoreattività-CNR, I-40129 Bologna, Italy
| | - Ruxandra Gref
- UMR
CNRS 8612, Faculty of Pharmacy, Paris Sud University, 92290 Châtenay-Malabry, France
| | - Marica B. Ericson
- Biomedical
Photonics Group, Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, SE-412 96 Gothenburg, Sweden
| | - Salvatore Sortino
- Laboratory
of Photochemistry, Department of Drug Sciences, University of Catania, Viale Andrea Doria 6, I-95125 Catania, Italy
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44
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Ragab SS, Swaminathan S, Baker JD, Raymo FM. Activation of BODIPY fluorescence by the photoinduced dealkylation of a pyridinium quencher. Phys Chem Chem Phys 2014; 15:14851-5. [PMID: 23694991 DOI: 10.1039/c3cp51580j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photoinduced cleavage of a 2-nitrobenzyl group from a pyridinium quencher covalently attached to the meso position of a BODIPY fluorophore activates the emission of the latter. This photochemical transformation prevents the transfer of one electron from the BODIPY platform to its heterocyclic appendage upon excitation and, as a result, permits the radiative deactivation of the excited fluorophore. This versatile mechanism for fluorescence switching can translate into the realization of an entire family of photoactivatable fluorophores based on the outstanding photophysical properties of BODIPY chromophores.
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Affiliation(s)
- Sherif Shaban Ragab
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, Coral Gables, Florida 33146-0431, USA
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45
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Swaminathan S, Garcia-Amorós J, Fraix A, Kandoth N, Sortino S, Raymo FM. Photoresponsive polymer nanocarriers with multifunctional cargo. Chem Soc Rev 2014; 43:4167-78. [DOI: 10.1039/c3cs60324e] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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46
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Holzmeister P, Wünsch B, Gietl A, Tinnefeld P. Single-molecule photophysics of dark quenchers as non-fluorescent FRET acceptors. Photochem Photobiol Sci 2014; 13:853-8. [DOI: 10.1039/c3pp50274k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Yang T, Liu Q, Li J, Pu S, Yang P, Li F. Photoswitchable upconversion nanophosphors for small animal imaging in vivo. RSC Adv 2014. [DOI: 10.1039/c3ra47529h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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48
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Petriella M, Deniz E, Swaminathan S, Roberti MJ, Raymo FM, Bossi ML. Superresolution Imaging with Switchable Fluorophores Based on Oxazine Auxochromes. Photochem Photobiol 2013; 89:1391-8. [DOI: 10.1111/php.12100] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Accepted: 05/07/2013] [Indexed: 11/27/2022]
Affiliation(s)
- Marco Petriella
- Laboratorio de Nanoscopías Fotónicas; INQUIMAE - DQIAyQF (FCEyN); Universidad de Buenos Aires & Conicet; Buenos Aires Argentina
| | - Erhan Deniz
- Department of Chemistry; Laboratory for Molecular Photonics; University of Miami; Miami FL
| | - Subramani Swaminathan
- Department of Chemistry; Laboratory for Molecular Photonics; University of Miami; Miami FL
| | - Maria J. Roberti
- Laboratorio de Nanoscopías Fotónicas; INQUIMAE - DQIAyQF (FCEyN); Universidad de Buenos Aires & Conicet; Buenos Aires Argentina
| | - Françisco M. Raymo
- Department of Chemistry; Laboratory for Molecular Photonics; University of Miami; Miami FL
| | - Mariano L. Bossi
- Laboratorio de Nanoscopías Fotónicas; INQUIMAE - DQIAyQF (FCEyN); Universidad de Buenos Aires & Conicet; Buenos Aires Argentina
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49
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Wu L, Dai Y, Jiang X, Petchprayoon C, Lee JE, Jiang T, Yan Y, Marriott G. High-contrast fluorescence imaging in fixed and living cells using optimized optical switches. PLoS One 2013; 8:e64738. [PMID: 23755140 PMCID: PMC3674008 DOI: 10.1371/journal.pone.0064738] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 04/18/2013] [Indexed: 11/25/2022] Open
Abstract
We present the design, synthesis and characterization of new functionalized fluorescent optical switches for rapid, all-visible light-mediated manipulation of fluorescence signals from labelled structures within living cells, and as probes for high-contrast optical lock-in detection (OLID) imaging microscopy. A triazole-substituted BIPS (TzBIPS) is identified from a rational synthetic design strategy that undergoes robust, rapid and reversible, visible light-driven transitions between a colorless spiro- (SP) and a far-red absorbing merocyanine (MC) state within living cells. The excited MC-state of TzBIPS may also decay to the MC-ground state emitting near infra-red fluorescence, which is used as a sensitive and quantitative read-out of the state of the optical switch in living cells. The SP to MC transition for a membrane-targeted TzBIPS probe (C₁₂-TzBIPS) is triggered at 405 nm at an energy level compatible with studies in living cells, while the action spectrum of the reverse transition (MC to SP) has a maximum at 650 nm. The SP to MC transition is complete within the 790 ns pixel dwell time of the confocal microscope, while a single cycle of optical switching between the SP and MC states in a region of interest is complete within 8 ms (125 Hz) within living cells, the fastest rate attained for any optical switch probe in a biological sample. This property can be exploited for real-time correction of background signals in living cells. A reactive form of TzBIPS is linked to secondary antibodies and used, in conjunction with an enhanced scope-based analysis of the modulated MC-fluorescence in immuno-stained cells, for high-contrast immunofluorescence microscopic analysis of the actin cytoskeleton.
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Affiliation(s)
- Liangxing Wu
- Department of Bioengineering, University of California, Berkeley, California, United States of America
| | - Yingrui Dai
- Department of Bioengineering, University of California, Berkeley, California, United States of America
| | - Xiaoli Jiang
- Department of Bioengineering, University of California, Berkeley, California, United States of America
| | - Chutima Petchprayoon
- Department of Bioengineering, University of California, Berkeley, California, United States of America
| | - Jessie E. Lee
- Department of Bioengineering, University of California, Berkeley, California, United States of America
| | - Tao Jiang
- Department of Bioengineering, Santa Clara University, Santa Clara, California, United States of America
| | - Yuling Yan
- Department of Bioengineering, Santa Clara University, Santa Clara, California, United States of America
| | - Gerard Marriott
- Department of Bioengineering, University of California, Berkeley, California, United States of America
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50
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Shaban Ragab S, Swaminathan S, Deniz E, Captain B, Raymo FM. Fluorescence photoactivation by ligand exchange around the boron center of a BODIPY chromophore. Org Lett 2013; 15:3154-7. [PMID: 23738708 DOI: 10.1021/ol401380n] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Chelation of the boron center of the borondipyrromethene (BODIPY) platform by a catecholate ligand results in effective fluorescence suppression. Electron transfer from the chelating unit to the adjacent chromophore upon excitation is responsible for fluorescence quenching. Under the influence of a photoacid generator, the catecholate chelator can be exchanged with a pair of methoxide ligands. This photoinduced transformation prevents electron transfer and efficiently activates the fluorescence of the BODIPY chromophore.
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Affiliation(s)
- Sherif Shaban Ragab
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami , 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
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