1
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Saridakis I, Riomet M, Belleza OJV, Coussanes G, Singer NK, Kastner N, Xiao Y, Smith E, Tona V, de la Torre A, Lopes EF, Sánchez-Murcia PA, González L, Sitte HH, Maulide N. PyrAtes: Modular Organic Salts with Large Stokes Shifts for Fluo-rescence Microscopy. Angew Chem Int Ed Engl 2024; 63:e202318127. [PMID: 38570814 DOI: 10.1002/anie.202318127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Indexed: 04/05/2024]
Abstract
The deployment of small-molecule fluorescent agents plays an ever-growing role in medicine and drug development. Herein, we complement the portfolio of powerful fluorophores, reporting the serendipitous discovery and development of a novel class with an imidazo[1,2-a]pyridinium triflate core, which we term PyrAtes. These fluorophores are synthesized in a single step from readily available materials (>60 examples) and display Stokes shifts as large as 240 nm, while also reaching NIR-I emissions at λmax as long as 720 nm. Computational studies allow the development of a platform for the prediction of λmax and λEm. Furthermore, we demonstrate the compatibility of these novel fluorophores with live cell imaging in HEK293 cells, suggesting PyrAtes as potent intracellular markers.
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Affiliation(s)
- Iakovos Saridakis
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
- Vienna Doctoral School in Chemistry (DoSChem), University of Vienna, Währinger Strasse 42, 1090, Vienna, Austria
| | - Margaux Riomet
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Oliver J V Belleza
- Centre of Physiology and Pharmacology, Institute of Pharmacology, Medical University of Vienna, Schwarzspanierstraße 17A, 1090, Vienna, Austria
| | - Guilhem Coussanes
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Nadja K Singer
- Institute of Theoretical Chemistry, University of Vienna, Währinger Strasse 17, 1090, Vienna, Austria
- Vienna Doctoral School in Chemistry (DoSChem), University of Vienna, Währinger Strasse 42, 1090, Vienna, Austria
| | - Nina Kastner
- Centre of Physiology and Pharmacology, Institute of Pharmacology, Medical University of Vienna, Schwarzspanierstraße 17A, 1090, Vienna, Austria
| | - Yi Xiao
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
- Vienna Doctoral School in Chemistry (DoSChem), University of Vienna, Währinger Strasse 42, 1090, Vienna, Austria
- CeMM Research Center for Molecular Medicine of the, Austrian Academy of Sciences, Lazarettgasse 14, 1090, Vienna, Austria
| | - Elliot Smith
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Veronica Tona
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Aurélien de la Torre
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Eric F Lopes
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Pedro A Sánchez-Murcia
- Institute of Theoretical Chemistry, University of Vienna, Währinger Strasse 17, 1090, Vienna, Austria
| | - Leticia González
- Institute of Theoretical Chemistry, University of Vienna, Währinger Strasse 17, 1090, Vienna, Austria
| | - Harald H Sitte
- Centre of Physiology and Pharmacology, Institute of Pharmacology, Medical University of Vienna, Schwarzspanierstraße 17A, 1090, Vienna, Austria
- Hourani Center for Applied Scientific Research, Al-Ahliyya Amman University, 19328, Amman, Jordan
- Center for Addiction Research and Science - AddRess, Medical University Vienna, Währinger Strasse 13 A, 1090, Vienna, Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
- CeMM Research Center for Molecular Medicine of the, Austrian Academy of Sciences, Lazarettgasse 14, 1090, Vienna, Austria
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2
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Dunlop D, Horváth P, Klán P, Slanina T, Šebej P. Central Ring Puckering Enhances the Stokes Shift of Xanthene Dyes. Chemistry 2024; 30:e202400024. [PMID: 38197554 DOI: 10.1002/chem.202400024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 01/05/2024] [Accepted: 01/08/2024] [Indexed: 01/11/2024]
Abstract
Small-molecule dyes are generally designed based on well-understood electronic effects. However, steric hindrance can promote excited-state geometric relaxation, increasing the difference between the positions of absorption and emission bands (the Stokes shift). Accordingly, we hypothesized that sterically induced central ring puckering in xanthene dyes could be used to systematically increase their Stokes shift. Through a combined experimental/quantum-chemical approach, we screened a group of (9-acylimino)-pyronin dyes with a perturbed central ring geometry. Our results showed that an atom with sp3 hybridization in position 10 of (9-acylimino)-pyronins induces central ring puckering and facilitates excited-state geometric relaxation, thereby markedly enhancing their Stokes shifts (by up to ~2000 cm-1). Thus, we prepared fluorescent (9-acylimino)-pyronin pH sensors, which showed a Stokes shift disparity between acid and base forms of up to ~8700 cm-1. Moreover, the concept of ring puckering-enhanced Stokes shift can be applied to a wide range of xanthene analogues found in the literature. Therefore, central ring puckering may be reliably used as a strategy for enhancing Stokes shifts in the rational design of dyes.
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Affiliation(s)
- David Dunlop
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 542/2, Prague 6, 160 00, Czech Republic
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, Prague 2, 128 40, Czech Republic
| | - Peter Horváth
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Petr Klán
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
- RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Tomáš Slanina
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 542/2, Prague 6, 160 00, Czech Republic
| | - Peter Šebej
- RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
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3
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Ren X, Wang C, Wu X, Rong M, Huang R, Liang Q, Shen T, Sun H, Zhang R, Zhang Z, Liu X, Song X, Foley JW. Auxochrome Dimethyl-Dihydroacridine Improves Fluorophores for Prolonged Live-Cell Super-Resolution Imaging. J Am Chem Soc 2024; 146:6566-6579. [PMID: 38422385 DOI: 10.1021/jacs.3c11823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Superior photostability, minimal phototoxicity, red-shifted absorption/emission wavelengths, high brightness, and an enlarged Stokes shift are essential characteristics of top-tier organic fluorophores, particularly for long-lasting super-resolution imaging in live cells (e.g., via stimulated emission depletion (STED) nanoscopy). However, few existing fluorophores possess all of these properties. In this study, we demonstrate a general approach for simultaneously enhancing these parameters through the introduction of 9,9-dimethyl-9,10-dihydroacridine (DMA) as an electron-donating auxochrome. DMA not only induces red shifts in emission wavelengths but also suppresses photooxidative reactions and prevents the formation of triplet states in DMA-based fluorophores, greatly improving photostability and remarkably minimizing phototoxicity. Moreover, the DMA group enhances the fluorophores' brightness and enlarges the Stokes shift. Importantly, the "universal" benefits of attaching the DMA auxochrome have been exemplified in various fluorophores including rhodamines, difluoride-boron complexes, and coumarin derivatives. The resulting fluorophores successfully enabled the STED imaging of organelles and HaloTag-labeled membrane proteins.
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Affiliation(s)
- Xiaojie Ren
- College of Chemistry & Chemical Engineering, Central South University, Changsha 410083, Hunan, China
- Department of Chemistry and Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Chao Wang
- Singapore University of Technology and Design, 8 Somapah Road, 487372 Singapore
| | - Xia Wu
- Singapore University of Technology and Design, 8 Somapah Road, 487372 Singapore
| | - Mengtao Rong
- School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, Anhui, China
| | - Rong Huang
- College of Chemistry & Chemical Engineering, Central South University, Changsha 410083, Hunan, China
| | - Qin Liang
- College of Chemistry & Chemical Engineering, Central South University, Changsha 410083, Hunan, China
| | - Tianruo Shen
- Singapore University of Technology and Design, 8 Somapah Road, 487372 Singapore
| | - Hongyan Sun
- Department of Chemistry and Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Ruilong Zhang
- School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, Anhui, China
| | - Zhongping Zhang
- School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, Anhui, China
| | - Xiaogang Liu
- Singapore University of Technology and Design, 8 Somapah Road, 487372 Singapore
| | - Xiangzhi Song
- College of Chemistry & Chemical Engineering, Central South University, Changsha 410083, Hunan, China
| | - James W Foley
- Rowland Institute at Harvard, Harvard University, Boston, Massachusetts 02142, United States
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4
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Jiang Y, Cui H, Yu Q. A novel near-infrared fluorescent probe for high-sensitivity detection of butyrylcholinesterase in various pathological states. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 308:123801. [PMID: 38142494 DOI: 10.1016/j.saa.2023.123801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 12/13/2023] [Accepted: 12/19/2023] [Indexed: 12/26/2023]
Abstract
Butyrylcholinesterase (BChE) is a crucial hydrolytic enzyme predominantly synthesized in the liver, playing a significant role in conditions like liver disorders, diabetes, Alzheimer's disease, and fat metabolism regulation. This study aims to address the current limitations in visualizing BChE activity in diseases at various states by introducing an ultra-sensitive near-infrared fluorescent probe, FDCM-BChE. The probe was engineered to have several properties, such as a large Stokes shift, rapid response time, high stability, excellent selectivity, and low detection limits. We validated the efficacy of FDCM-BChE in quantifying BChE activity in human serum and leveraged its low cytotoxicity for cellular imaging. The study revealed the downregulation of BChE activity in liver cancer and hepatic injury and the upregulation in diabetes. Thus, FDCM-BChE shows promise as a tool for specific applications, providing insights into diseases associated with BChE activity.
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Affiliation(s)
- Yueyao Jiang
- Department of Pharmacy, China-Japan Union Hospital of Jilin University, Changchun 130033, China
| | - Haizhen Cui
- Department of Pharmacy, China-Japan Union Hospital of Jilin University, Changchun 130033, China
| | - Qian Yu
- Department of Pharmacy, China-Japan Union Hospital of Jilin University, Changchun 130033, China.
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5
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Gupta MK, Senthilkumar S, Rangan L. 3, 5-Dihydroxy 4', 7-dimethoxyflavone-DNA interaction study for nucleic acid detection and differential cell staining. Int J Biol Macromol 2024; 261:129713. [PMID: 38281518 DOI: 10.1016/j.ijbiomac.2024.129713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/11/2024] [Accepted: 01/19/2024] [Indexed: 01/30/2024]
Abstract
The present study is focused on application of a natural compound, 3, 5-dihydroxy 4', 7-dimethoxyflavone (DHDM) from a medicinal plant Alpinia nigra for nucleic acid detection and differential cell staining. DHDM was found to interact with nucleic acid and forms complex, which was investigated for various applications. It was successfully utilized to visualize plasmid, genomic, and ds-linear DNA in agarose gel electrophoresis without affecting the DNA mobility in the gel. Fluorescence of DHDM increased several fold upon binding to dsDNA. Photostability of the compound was assessed and showed photobleaching effect that decreased gradually over time. Application of the compound was further extended to differential cell staining. When observed in fluorescence microscope, DHDM stained the dead cells and differentiated them from live cells in the case of bacterial, yeast, and mammalian cells. Higher concentration of the compound was found to be less cytotoxic to cancerous cells. Nucleic acid staining dyes like Ethidium bromide (EtBr), Propidium iodide (PI), etc. are carcinogens and environmental pollutants and therefore DHDM a natural compound, is a major benefit and thus can serve as an alternative to the current dyes.
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Affiliation(s)
- Manish Kumar Gupta
- Applied Biodiversity Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Sanjana Senthilkumar
- Applied Biodiversity Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Latha Rangan
- Applied Biodiversity Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Assam 781039, India.
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6
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Zhang S, Qu Y, Zhang D, Li S, Tang F, Ding A, Hu L, Zhang J, Wang H, Huang K, Li L. Rational Design and Biological Application of Hybrid Fluorophores. Chemistry 2024; 30:e202303208. [PMID: 38038726 DOI: 10.1002/chem.202303208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/24/2023] [Accepted: 11/29/2023] [Indexed: 12/02/2023]
Abstract
Fluorophores are considered powerful tools for not only enabling the visualization of cell structures, substructures, and biological processes, but also making for the quantitative and qualitative measurement of various analytes in living systems. However, most fluorophores do not meet the diverse requirements for biological applications in terms of their photophysical and biological properties. Hybridization is an important strategy in molecular engineering that provides fluorophores with complementarity and multifunctionality. This review summarizes the basic strategies of hybridization with four classes of fluorophores, including xanthene, cyanine, coumarin, and BODIPY with a focus on their structure-property relationship (SPR) and biological applications. This review aims to provide rational hybrid ideas for expanding the reservoir of knowledge regarding fluorophores and promoting the development of newly produced fluorophores for applications in the field of life sciences.
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Affiliation(s)
- Shiji Zhang
- Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen, 361005, China
| | - Yunwei Qu
- Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen, 361005, China
| | - Duoteng Zhang
- Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen, 361005, China
| | - Shuai Li
- Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen, 361005, China
| | - Fang Tang
- Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen, 361005, China
- Future Display Institute in Xiamen, Xiamen, 361005, China
| | - Aixiang Ding
- Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen, 361005, China
| | - Lei Hu
- School of Pharmacy, Wannan Medical College, Wuhu, 241002, China
| | - Jin Zhang
- Technical Center of Xiamen Customs, Xiamen, 361001, China
| | - Hui Wang
- Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen, 361005, China
- School of Pharmacy, Wannan Medical College, Wuhu, 241002, China
| | - Kai Huang
- Future Display Institute in Xiamen, Xiamen, 361005, China
| | - Lin Li
- Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen, 361005, China
- Future Display Institute in Xiamen, Xiamen, 361005, China
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7
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Yang Y, Jiang Q, Zhang F. Nanocrystals for Deep-Tissue In Vivo Luminescence Imaging in the Near-Infrared Region. Chem Rev 2024; 124:554-628. [PMID: 37991799 DOI: 10.1021/acs.chemrev.3c00506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
In vivo imaging technologies have emerged as a powerful tool for both fundamental research and clinical practice. In particular, luminescence imaging in the tissue-transparent near-infrared (NIR, 700-1700 nm) region offers tremendous potential for visualizing biological architectures and pathophysiological events in living subjects with deep tissue penetration and high imaging contrast owing to the reduced light-tissue interactions of absorption, scattering, and autofluorescence. The distinctive quantum effects of nanocrystals have been harnessed to achieve exceptional photophysical properties, establishing them as a promising category of luminescent probes. In this comprehensive review, the interactions between light and biological tissues, as well as the advantages of NIR light for in vivo luminescence imaging, are initially elaborated. Subsequently, we focus on achieving deep tissue penetration and improved imaging contrast by optimizing the performance of nanocrystal fluorophores. The ingenious design strategies of NIR nanocrystal probes are discussed, along with their respective biomedical applications in versatile in vivo luminescence imaging modalities. Finally, thought-provoking reflections on the challenges and prospects for future clinical translation of nanocrystal-based in vivo luminescence imaging in the NIR region are wisely provided.
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Affiliation(s)
- Yang Yang
- College of Energy Materials and Chemistry, State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot 010021, China
| | - Qunying Jiang
- College of Energy Materials and Chemistry, State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot 010021, China
| | - Fan Zhang
- College of Energy Materials and Chemistry, State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot 010021, China
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China
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8
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Khrootkaew T, Wangngae S, Chansaenpak K, Rueantong K, Wattanathana W, Pinyou P, Panajapo P, Promarak V, Sagarik K, Kamkaew A. Heavy Atom Effect on the Intersystem Crossing of a Boron Difluoride Formazanate Complex-Based Photosensitizer: Experimental and Theoretical Studies. Chem Asian J 2024; 19:e202300808. [PMID: 37926693 DOI: 10.1002/asia.202300808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/02/2023] [Accepted: 11/05/2023] [Indexed: 11/07/2023]
Abstract
Photodynamic therapy (PDT) is a photochemical-based treatment approach that involves using light to activate photosensitizers (PSs). Attractively, PDT is one of the alternative cancer treatments due to its noninvasive technique. By utilizing the heavy atom effect, this work modified a class of formazan dyes to improve intersystem crossing (ISC) to improve reactive oxygen species (ROS) generation for PDT treatment. Two methods were used to observe the ROS generation enhanced by ISC of the synthesized complexes including, (1) recording DPBF decomposition caused by the ROS, and (2) calculating the potential energy curves for photophysical mechanisms of BF2 -formazanate dyes using the DFT and nudged elastic band (NEB) methods. The photophysical properties of the dyes were studied using spectroscopic techniques and X-ray crystallography, as well as DFT calculations. The experimental and theoretical results and in vitro cellular assays confirmed the potential use of the newly synthesized iodinated BF2 -formazanate dyes in PDT.
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Affiliation(s)
- Tunyawat Khrootkaew
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Muang, Nakhon Ratchasima, 30000, Thailand
| | - Sirilak Wangngae
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Muang, Nakhon Ratchasima, 30000, Thailand
| | - Kantapat Chansaenpak
- National Nanotechnology Center, National Science and Technology Development Agency, Thailand Science Park, Pathum Thani, 12120, Thailand
| | - Kasin Rueantong
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210, Thailand
| | - Worawat Wattanathana
- Department of Materials Engineering, Faculty of Engineering, Kasetsart University, Ladyao, Chatuchak, Bangkok, 10900, Thailand
| | - Piyanut Pinyou
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Muang, Nakhon Ratchasima, 30000, Thailand
| | - Pannipa Panajapo
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Muang, Nakhon Ratchasima, 30000, Thailand
| | - Vinich Promarak
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210, Thailand
| | - Kritsana Sagarik
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Muang, Nakhon Ratchasima, 30000, Thailand
| | - Anyanee Kamkaew
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Muang, Nakhon Ratchasima, 30000, Thailand
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9
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Kruzich E, Phadke RA, Brack A, Stroumbakis D, Infante O, Cruz-Martín A. A pipeline for STED super-resolution imaging and Imaris analysis of nanoscale synapse organization in mouse cortical brain slices. STAR Protoc 2023; 4:102707. [PMID: 37948187 PMCID: PMC10658395 DOI: 10.1016/j.xpro.2023.102707] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 09/28/2023] [Accepted: 10/22/2023] [Indexed: 11/12/2023] Open
Abstract
Advances in super-resolution imaging enable us to delve into its intricate structural and functional complexities with unprecedented detail. Here, we present a pipeline to visualize and analyze the nanoscale organization of cortical layer 1 apical dendritic spines in the mouse prefrontal cortex. We describe steps for brain slice preparation, immunostaining, stimulated emission depletion super-resolution microscopy, and data analysis using the Imaris software package. This protocol allows the study of physiologically relevant brain circuits implicated in neuropsychiatric disorders.
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Affiliation(s)
- Ezra Kruzich
- Neurobiology Section in the Department of Biology, Boston University, Boston, MA 02215, USA.
| | - Rhushikesh A Phadke
- Molecular Biology, Cell Biology, and Biochemistry Section in the Department of Biology, Boston University, Boston, MA 02215, USA
| | - Alison Brack
- Molecular Biology, Cell Biology, and Biochemistry Section in the Department of Biology, Boston University, Boston, MA 02215, USA
| | - Dimitri Stroumbakis
- Neurobiology Section in the Department of Biology, Boston University, Boston, MA 02215, USA
| | - Oriannys Infante
- Montclair State University, Montclair, NJ 07043, USA; Summer Undergraduate Research Fellowship Program, Boston University, Boston, MA 02215, USA
| | - Alberto Cruz-Martín
- Neurobiology Section in the Department of Biology, Boston University, Boston, MA 02215, USA; Molecular Biology, Cell Biology, and Biochemistry Section in the Department of Biology, Boston University, Boston, MA 02215, USA.
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10
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Kumar GD, Liao YC, Nazir R, Banasiewicz M, Chou PT, Gryko DT. Strongly emitting, centrosymmetric, ladder-type bis-coumarins with crankshaft architecture. Phys Chem Chem Phys 2023; 25:28824-28828. [PMID: 37853830 DOI: 10.1039/d3cp04121b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
Quadrupolar bis-coumarins bearing dialkylamino groups, prepared by a double Pechmann reaction and subsequent oxidation, strongly emit yellow-orange light. Comparison with non-substituted analogs reveals that, the photophysical properties of the conjugated bis-coumarins are controlled both by the dialkylamino substituents and by the π-system. Analogous but non-conjugated bis-coumarins emit blue light both in solution and in crystalline state. Unusually fast oxidation process in the crystalline state is responsible for the presence of two bands in their solid-state emission. Two-center, charge-transfer transition from an orbital delocalized on the entire molecule to the central benzene ring is responsible for photophysical properties.
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Affiliation(s)
- G Dinesh Kumar
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland.
| | - Yu-Chan Liao
- Department of Chemistry, National Taiwan University, 1 Roosevelt Road Section 4, Taipei 106, Taiwan.
| | - Rashid Nazir
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland.
- Advanced Fibers, Empa Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, St. Gallen 9014, Switzerland
| | - Marzena Banasiewicz
- Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, Warsaw 02-668, Poland
| | - Pi-Tai Chou
- Department of Chemistry, National Taiwan University, 1 Roosevelt Road Section 4, Taipei 106, Taiwan.
| | - Daniel T Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland.
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11
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Eustáquio R, Ramalho JPP, Caldeira AT, Pereira A. Rational Design of Cost-Effective 4-Styrylcoumarin Fluorescent Derivatives for Biomolecule Labeling. Molecules 2023; 28:6822. [PMID: 37836666 PMCID: PMC10574246 DOI: 10.3390/molecules28196822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/23/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023] Open
Abstract
Fluorescent labels are key tools in a wide range of modern scientific applications, such as fluorescence microscopy, flow cytometry, histochemistry, direct and indirect immunochemistry, and fluorescence in situ hybridization (FISH). Small fluorescent labels have important practical advantages as they allow maximizing the fluorescence signal by binding multiple fluorophores to a single biomolecule. At present, the most widely used fluorescent labels available present small Stokes shifts and are too costly to be used in routine applications. In this work we present four new coumarin derivatives, as promising and inexpensive fluorescent labels for biomolecules, obtained through a cost-effective, efficient, and straightforward synthetic strategy. Density functional theory and time-dependent density functional theory calculations of the electronic ground and lowest-lying singlet excited states were carried out in order to gain insights into the observed photophysical properties.
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Affiliation(s)
- Raquel Eustáquio
- HERCULES Laboratory, IN2PAST—Associate Laboratory for Research and Innovation in Heritage, Arts, Sustainability and Territory, University of Évora, Largo Marquês de Marialva 8, 7000-809 Évora, Portugal; (R.E.); (A.T.C.)
| | - João P. Prates Ramalho
- Department of Chemistry and Biochemistry, School of Sciences and Technology, University of Évora, Rua Romão Ramalho 59, 7000-671 Évora, Portugal;
- Associated Laboratory for Green Chemistry (LAQV) of the Network of Chemistry and Technology (REQUIMTE), University of Évora, Rua Romão Ramalho 59, 7000-671 Évora, Portugal
| | - Ana Teresa Caldeira
- HERCULES Laboratory, IN2PAST—Associate Laboratory for Research and Innovation in Heritage, Arts, Sustainability and Territory, University of Évora, Largo Marquês de Marialva 8, 7000-809 Évora, Portugal; (R.E.); (A.T.C.)
- Department of Chemistry and Biochemistry, School of Sciences and Technology, University of Évora, Rua Romão Ramalho 59, 7000-671 Évora, Portugal;
- City U Macau Chair in Sustainable Heritage, Sino-Portugal Joint Laboratory of Cultural Heritage Conservation Science, University of Évora, Largo Marquês de Marialva 8, 7000-809 Évora, Portugal
| | - António Pereira
- HERCULES Laboratory, IN2PAST—Associate Laboratory for Research and Innovation in Heritage, Arts, Sustainability and Territory, University of Évora, Largo Marquês de Marialva 8, 7000-809 Évora, Portugal; (R.E.); (A.T.C.)
- Department of Chemistry and Biochemistry, School of Sciences and Technology, University of Évora, Rua Romão Ramalho 59, 7000-671 Évora, Portugal;
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12
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Szychta K, Koszarna B, Banasiewicz M, Sobolewski A, O’Mari O, Clark JA, Vullev VI, Barboza CA, Gryko DT. Conformation of the Ester Group Governs the Photophysics of Highly Polarized Benzo[ g]coumarins. JACS AU 2023; 3:1918-1930. [PMID: 37502148 PMCID: PMC10369411 DOI: 10.1021/jacsau.3c00169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/10/2023] [Accepted: 06/13/2023] [Indexed: 07/29/2023]
Abstract
Photosensitizers that display "unusual" emission from upper electronically excited states offer possibilities for initiating higher-energy processes than what the governing Kasha's rule postulates. Achieving conditions for dual fluorescence from multiple states of the same species requires molecular design and conditions that favorably tune the excited-state dynamics. Herein, we switch the position of the electron-donating NMe2 group around the core of benzo[g]coumarins (BgCoum) and tune the electronic coupling and the charge-transfer character of the fluorescent excited states. For solvents with intermediate polarity, three of the four regioisomers exhibit fluorescence from two different excited states with bands that are well separated in the visible and the near-infrared spectral regions. Computational analysis, employing ab initio methods, reveals that the orientation of an ester on the pyrone ring produces two conformers responsible for the observed dual fluorescence. Studies with solid solvating media, which restricts the conformational degrees of freedom, concur with the computational findings. These results demonstrate how "seemingly inconsequential" auxiliary substituents, such as the esters on the pyrone coumarin rings, can have profound effects leading to "anti-Kasha" photophysical behavior important for molecular photonics, materials engineering, and solar-energy science.
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Affiliation(s)
- Kamil Szychta
- Institute
of Organic Chemistry of Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Beata Koszarna
- Institute
of Organic Chemistry of Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Marzena Banasiewicz
- Institute
of Physics of Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
| | - Andrzej Sobolewski
- Institute
of Physics of Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
| | - Omar O’Mari
- Department
of Bioengineering, University of California, Riverside, California 92521, United States
| | - John A. Clark
- Department
of Bioengineering, University of California, Riverside, California 92521, United States
| | - Valentine I. Vullev
- Department
of Bioengineering, University of California, Riverside, California 92521, United States
- Department
of Chemistry, Department of Biochemistry, and Materials Science and
Engineering Program, University of California, Riverside, California 92521, United States
| | - Cristina A. Barboza
- Institute
of Physics of Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
- Department
of Physical and Quantum Chemistry, Faculty of Chemistry, Wroclaw University of Science and Technology, Wrocław 50-370, Poland
| | - Daniel T. Gryko
- Institute
of Organic Chemistry of Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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13
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Boehm T, Sednev M, Gludovacz E, Weiss-Tessbach M, Brankovic J, Klavins K, Jilma B. Incubation of protonated NADH or NADPH with ortho-aminobenzaldehyde generates a novel fluorescent nicotinamide dihydroquinazoline condensate. Anal Biochem 2023; 676:115246. [PMID: 37451419 DOI: 10.1016/j.ab.2023.115246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 07/05/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023]
Abstract
Incubation of reduced nicotinamide adenine dinucleotide (NADH) but not oxidized NAD+ with ortho-aminobenzaldehyde (oABA) generated an uncharacterized chromophore with an absorption peak characteristic of a dihydroquinazoline condensate. This chromophore is responsible for a non-specific signal in a diamine oxidase (DAO) activity assay based on the generation of fluorescent dihydroquinazoline structures directly from DAO substrates. Herein we show that at pH values below 3.0 the glycosidic bond of NADH/NADPH is broken releasing double protonated dihydro-nicotinamide (dihydro-NAM), which consequently condensates with oABA to a novel dihydroquinazoline chromophore and fluorophore, namely the 6- or 8-carbamoyl-5H,7H,8H,9H-10λ⁵-pyrido[2,1-b]quinazolin-10-ylium isomer (CMPQ). The second protonation event closely correlates with the pKa of the N1 nitrogen of C5-protonated dihydro-NAM and fluorophore stability. The fusion partner of oABA is likely the iminium of the primary acid product of dihydro-NAM after glycosidic bond hydrolysis and before irreversible cyclization. Trapping of protonated dihydro-NAM from NADH or NADPH with oABA allows quantification of these dinucleotides. Despite almost a century of research studying acid-catalyzed molecular rearrangements of NADH and NADPH, new and surprising details can be discovered.
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Affiliation(s)
- Thomas Boehm
- Department of Clinical Pharmacology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.
| | - Maksim Sednev
- Institute of Organic Chemistry, University of Wuerzburg, Am Hubland, 97074, Wuerzburg, Germany
| | - Elisabeth Gludovacz
- Department of Biotechnology, University of Natural Resources and Life Sciences, Muthgasse 18, 1190, Vienna, Austria
| | - Matthias Weiss-Tessbach
- Department of Clinical Pharmacology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Jelena Brankovic
- Department of Clinical Pharmacology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Kristaps Klavins
- Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Pulka St 3, LV-1007, Riga, Latvia
| | - Bernd Jilma
- Department of Clinical Pharmacology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
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14
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Joy F, Devasia J, Nair Y, Nizam A. Excitation dependent emissive multi stimuli responsive ESIPT organic luminogen for monitoring sea food freshness. Food Chem 2023; 427:136643. [PMID: 37385062 DOI: 10.1016/j.foodchem.2023.136643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 06/06/2023] [Accepted: 06/14/2023] [Indexed: 07/01/2023]
Abstract
Excited state intramolecular proton transfer (ESIPT) organic luminophores with excitation wavelength-dependent color tunability have drawn significant attention due to their exceptional photoluminescent properties in solution and solid state. A novel salicylaldehyde-based Schiff's base molecule, (E)-N'-(3,5-dibromo-2-hydroxybenzylidene)benzohydrazide (BHN) exhibited stimuli (excitation wavelength and pH) induced changes in fluorescence properties which was utilised for applications like trace level water sensing in organic solvents (THF, acetone and DMF), detection and quantification of biogenic amines and anticounterfeiting. In the solution state, BHN rendered a ratiometric detection and quantification of ammonia, diethylamine and trimethylamine, which is further supported by DFT studies. The photoluminescent response of BHN towards various biogenic amines was later utilised to monitor shrimp freshness. The investigation carried out highlights the potential versatility of ESIPT hydrazones, which renders multi stimuli responsive behaviour that can be utilised for water sensing, anticounterfeiting and the detection and quantification of biogenic amines.
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Affiliation(s)
- Francis Joy
- Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bangalore, Karnataka 560029, India
| | - Jyothis Devasia
- Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bangalore, Karnataka 560029, India
| | - Yamuna Nair
- Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bangalore, Karnataka 560029, India
| | - Aatika Nizam
- Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bangalore, Karnataka 560029, India.
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15
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Alcázar JJ, García-Río L, Robles AI, Dinamarca-Villarroel L, Fierro A, Santos JG, Aliaga ME. Linear relationship between emission quantum yield and Stokes shift in 3-styryl aza-coumarin based dyes in the presence of cyclodextrins. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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16
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Burgers TCQ, Vlijm R. Fluorescence-based super-resolution-microscopy strategies for chromatin studies. Chromosoma 2023:10.1007/s00412-023-00792-9. [PMID: 37000292 PMCID: PMC10356683 DOI: 10.1007/s00412-023-00792-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/28/2023] [Accepted: 03/16/2023] [Indexed: 04/01/2023]
Abstract
Super-resolution microscopy (SRM) is a prime tool to study chromatin organisation at near biomolecular resolution in the native cellular environment. With fluorescent labels DNA, chromatin-associated proteins and specific epigenetic states can be identified with high molecular specificity. The aim of this review is to introduce the field of diffraction-unlimited SRM to enable an informed selection of the most suitable SRM method for a specific chromatin-related research question. We will explain both diffraction-unlimited approaches (coordinate-targeted and stochastic-localisation-based) and list their characteristic spatio-temporal resolutions, live-cell compatibility, image-processing, and ability for multi-colour imaging. As the increase in resolution, compared to, e.g. confocal microscopy, leads to a central role of the sample quality, important considerations for sample preparation and concrete examples of labelling strategies applicable to chromatin research are discussed. To illustrate how SRM-based methods can significantly improve our understanding of chromatin functioning, and to serve as an inspiring starting point for future work, we conclude with examples of recent applications of SRM in chromatin research.
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Affiliation(s)
- Thomas C Q Burgers
- Molecular Biophysics, Zernike Institute for Advanced Materials, Rijksuniversiteit Groningen, Groningen, the Netherlands
| | - Rifka Vlijm
- Molecular Biophysics, Zernike Institute for Advanced Materials, Rijksuniversiteit Groningen, Groningen, the Netherlands.
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17
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Wessig P, Lehmann M. [1,3]-Dioxolo[4,5-f]benzodioxole (DBD) Fluorescent Dyes; Synthesis, Properties, and Applications. SYNTHESIS-STUTTGART 2023. [DOI: 10.1055/s-0042-1751428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
AbstractIn this review we give an overview of the syntheses and photophysical properties of the new class of fluorescent dyes based on a [1,3]-dioxolo[4,5-f]benzodioxole core and their derivatives. Starting from commercially available reactants (e.g., sesamol, 1,2,4,5-tetrachlorobenzene) the core units can be prepared in a simple manner. Then, the benzene core can be derivatized via lithiation and their photophysical properties can be adjusted as desired. The obtained fluorophores have an absorption range of 403–520 nm and an emission range of 495–665 nm. This class of fluorescent dyes is also characterized by a long fluorescence lifetime, a high stability towards photobleaching, large Stokes shifts, and small size. Thus, the DBD dyes are optimally suited for optical sensing.1 Introduction2 Synthesis3 Properties4 Applications
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18
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Alvelid J, Bucci A, Testa I. Far Red-Shifted CdTe Quantum Dots for Multicolour Stimulated Emission Depletion Nanoscopy. Chemphyschem 2023; 24:e202200698. [PMID: 36239140 PMCID: PMC10098508 DOI: 10.1002/cphc.202200698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/07/2022] [Indexed: 02/03/2023]
Abstract
Stimulated emission depletion (STED) nanoscopy is a widely used nanoscopy technique. Two-colour STED imaging in fixed and living cells is standardised today utilising both fluorescent dyes and fluorescent proteins. Solutions to image additional colours have been demonstrated using spectral unmixing, photobleaching steps, or long-Stokes-shift dyes. However, these approaches often compromise speed, spatial resolution, and image quality, and increase complexity. Here, we present multicolour STED nanoscopy with far red-shifted semiconductor CdTe quantum dots (QDs). STED imaging of the QDs is optimized to minimize blinking effects and maximize the number of detected photons. The far-red and compact emission spectra of the investigated QDs free spectral space for the simultaneous use of fluorescent dyes, enabling straightforward three-colour STED imaging with a single depletion beam. We use our method to study the internalization of QDs in cells, opening up the way for future super-resolution studies of particle uptake and internalization.
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Affiliation(s)
- Jonatan Alvelid
- Department of Applied Physics and SciLifeLab, KTH Royal Institute of Technology, 114 28, Stockholm, Sweden
| | - Andrea Bucci
- Department of Applied Physics and SciLifeLab, KTH Royal Institute of Technology, 114 28, Stockholm, Sweden
| | - Ilaria Testa
- Department of Applied Physics and SciLifeLab, KTH Royal Institute of Technology, 114 28, Stockholm, Sweden
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19
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Prabakaran K, Manivannan R, Son YA. Highly emissions of TPA-linear based pyrazine derivatives with different mechanochromic luminosity. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 285:121874. [PMID: 36122466 DOI: 10.1016/j.saa.2022.121874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 08/19/2022] [Accepted: 09/10/2022] [Indexed: 06/15/2023]
Abstract
We designed the TPA-based linear pyrazine derivatives of PP-1 and PP-2, synthesized using the conventional Suzuki cross-linking reaction. It was followed by photophysical studies such as aprotic solvent (Haxene to DMF). A red-shift was observed from the non-polar aprotic solvent to the polar aprotic solvent, and the emission intensity was gradually decreased. In addition, the Aggregation-induced emission (AIE) effect has been studied against the DMF/water addition of linear pyrazine compounds. It showed a classic aggregation-caused quenching effect (ACQ) and red-shifted at an increase of (fw) 0 to 40%. After this case, when the water fraction in these studies was increased by (fw) 50 to 90%, a blue shift and a mild AIE effect has occurred. And also, was investigated acidochromic effect of compounds PP-1 and PP-2 using TFA acid. Absorption and emission intensity were gradually reduced as the acid concentration increased for these studies, while the new peaks appeared red-shifted in the absorption spectrum. They were examined before and after exposure to UV light irradiation in the synthesized dye compounds.
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Affiliation(s)
- Kaliyan Prabakaran
- Department of Advanced Organic Materials Engineering, Chungnam National University, 220, Gung-dong, Yuseong-gu, Daejeon 305-764, South Korea
| | - Ramalingam Manivannan
- Department of Advanced Organic Materials Engineering, Chungnam National University, 220, Gung-dong, Yuseong-gu, Daejeon 305-764, South Korea
| | - Young-A Son
- Department of Advanced Organic Materials Engineering, Chungnam National University, 220, Gung-dong, Yuseong-gu, Daejeon 305-764, South Korea.
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20
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Likhotkin I, Lincoln R, Bossi ML, Butkevich AN, Hell SW. Photoactivatable Large Stokes Shift Fluorophores for Multicolor Nanoscopy. J Am Chem Soc 2023; 145:1530-1534. [PMID: 36626161 PMCID: PMC9880998 DOI: 10.1021/jacs.2c12567] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
We designed caging-group-free photoactivatable live-cell permeant dyes with red fluorescence emission and ∼100 nm Stokes shifts based on a 1-vinyl-10-silaxanthone imine core structure. The proposed fluorophores undergo byproduct-free one- and two-photon activation, are suitable for multicolor fluorescence microscopy in fixed and living cells, and are compatible with super-resolution techniques such as STED (stimulated emission depletion) and PALM (photoactivated localization microscopy). Use of photoactivatable labels for strain-promoted tetrazine ligation and self-labeling protein tags (HaloTag, SNAP-tag), and duplexing of an imaging channel with another large Stokes shift dye have been demonstrated.
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Affiliation(s)
- Ilya Likhotkin
- Department
of Optical Nanoscopy, Max Planck Institute
for Medical Research, Jahnstrasse 29, 69120 Heidelberg, Germany
| | - Richard Lincoln
- Department
of Optical Nanoscopy, Max Planck Institute
for Medical Research, Jahnstrasse 29, 69120 Heidelberg, Germany
| | - Mariano L. Bossi
- Department
of NanoBiophotonics, Max Planck Institute
for Multidisciplinary Sciences, Am Fassberg 11, 37077 Göttingen, Germany
| | - Alexey N. Butkevich
- Department
of Optical Nanoscopy, Max Planck Institute
for Medical Research, Jahnstrasse 29, 69120 Heidelberg, Germany,Department
of NanoBiophotonics, Max Planck Institute
for Multidisciplinary Sciences, Am Fassberg 11, 37077 Göttingen, Germany,
| | - Stefan W. Hell
- Department
of Optical Nanoscopy, Max Planck Institute
for Medical Research, Jahnstrasse 29, 69120 Heidelberg, Germany,Department
of NanoBiophotonics, Max Planck Institute
for Multidisciplinary Sciences, Am Fassberg 11, 37077 Göttingen, Germany,
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21
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Li Y, Niu Y, Kong C, Yang Z, Qu J. Theoretical insight on the saturated stimulated emission intensity of a squaraine dye for STED nanoscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 284:121793. [PMID: 36067625 DOI: 10.1016/j.saa.2022.121793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 08/22/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
Stimulated emission depletion nanoscopy (STED) is increasingly applied for the insights into the ultra-structures of organelles in live cells because of the bypassing of the Abbe's optical diffraction limit. Theoretically, with the increase of excitation and depletion laser power, the imaging resolution can be accordingly enhanced and even close to the infinity. Unfortunately, powerful laser illuminations usually produce severe phototoxicity and photobleaching, which will lead to more extra-interference with biological events in live cells and accelerate the decomposition of the fluorescent probes. In view of the trade-off of cell viability and imaging resolution, excellent probes with superior photophysical properties are great in demand. For a qualified STED probes, the saturated stimulated emission intensity (Isat) is considered as a key evaluating factor. According to the formula, Isat is inversely proportional to the stimulated emission cross section (σsti) of the fluorescent probe. However, the relationship between the σsti and chemical structure of the STED probe remain to be unclear. In this work, we explore the influence factors by theoretical calculations on a squaraine dye (MitoEsq-635) and a commercial dye (Atto647N). The results indicate that the increase of transition dipole moment (μ) are beneficial for the increase of σsti, thereafter reducing Isat. Furthermore, we firstly proposed that stimulated emission depletion was qualitatively interpreted by the investigation on the potential energy surfaces of ground states (S0) and the first excited states (S1) of the dyes.
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Affiliation(s)
- Yuan Li
- Center for Biomedical Optics and Photonics & College of Physics and Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, China
| | - Yingli Niu
- Department of Physics School of Science, Beijing Jiaotong University, Beijing 100044, China
| | - Chuipeng Kong
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry, Institute of Theoretical Chemistry, College of Chemistry, Jilin University, Changchun 130023, China
| | - Zhigang Yang
- Center for Biomedical Optics and Photonics & College of Physics and Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, China.
| | - Junle Qu
- Center for Biomedical Optics and Photonics & College of Physics and Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, China
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22
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Sharapov AD, Fatykhov RF, Khalymbadzha IA, Valieva MI, Nikonov IL, Taniya OS, Kopchuk DS, Zyryanov GV, Potapova AP, Novikov AS, Sharutin VV, Chupakhin ON. Fluorescent Pyranoindole Congeners: Synthesis and Photophysical Properties of Pyrano[3,2- f], [2,3- g], [2,3- f], and [2,3- e]Indoles. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248867. [PMID: 36557999 PMCID: PMC9783255 DOI: 10.3390/molecules27248867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/06/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022]
Abstract
This paper reports the synthesis of four types of annulated pyranoindole congeners: pyrano[3,2-f]indole, pyrano[2,3-g]indole, pyrano[2,3-f]indole, and pyrano[2,3-e]indole and photophysical studies in this series. The synthesis of pyrano[3,2-f], [2,3-g], and [2,3-e]indoles involve a tandem of Bischler-Möhlau reaction of 3-aminophenol with benzoin to form 6-hydroxy- or 4-hydroxyindole followed by Pechmann condensation of these hydroxyindoles with β-ketoesters. Pyrano[2,3-f]indoles were synthesized through the Nenitzescu reaction of p-benzoquinone and ethyl aminocrotonates and subsequent Pechmann condensation of the obtained 5-hydroxyindole derivatives. Among the pyranoindoles studied, the most promising were pyrano[3,2-f] and [2,3-g]indoles. These compounds were characterized by moderate to high quantum yields (30-89%) and a large (9000-15,000 cm-1) Stokes shift. More detailed photophysical studies were carried out for a series of the most promising derivatives of pyrano[3,2-f] and [2,3-g]indoles to demonstrate their positive solvatochromism, and the data collected was analyzed using Lippert-Mataga equation. Quantum chemical calculations were performed to deepen the knowledge of the absorption and emission properties of pyrano[3,2-f] and [2,3-g]indoles as well as to explain their unusual geometries and electronic structures.
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Affiliation(s)
- Ainur D. Sharapov
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira Street 19, 620002 Ekaterinburg, Russia
| | - Ramil F. Fatykhov
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira Street 19, 620002 Ekaterinburg, Russia
| | - Igor A. Khalymbadzha
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira Street 19, 620002 Ekaterinburg, Russia
| | - Maria I. Valieva
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira Street 19, 620002 Ekaterinburg, Russia
- Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Kovalevskoy Street 22, 620219 Ekaterinburg, Russia
| | - Igor L. Nikonov
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira Street 19, 620002 Ekaterinburg, Russia
- Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Kovalevskoy Street 22, 620219 Ekaterinburg, Russia
| | - Olga S. Taniya
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira Street 19, 620002 Ekaterinburg, Russia
| | - Dmitry S. Kopchuk
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira Street 19, 620002 Ekaterinburg, Russia
- Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Kovalevskoy Street 22, 620219 Ekaterinburg, Russia
| | - Grigory V. Zyryanov
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira Street 19, 620002 Ekaterinburg, Russia
- Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Kovalevskoy Street 22, 620219 Ekaterinburg, Russia
- Correspondence: ; Tel.: +7-343-375-45-01
| | - Anastasya P. Potapova
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira Street 19, 620002 Ekaterinburg, Russia
| | - Alexander S. Novikov
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Emb., 7/9, 199034 Saint Petersburg, Russia
- Research Institute of Chemistry, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya Street, 6, 117198 Moscow, Russia
| | - Vladimir V. Sharutin
- Department of Chemistry, Institute of Natural Sciences, South Ural State University (National Research University), Lenin Avenue 76, 454080 Chelyabinsk, Russia
| | - Oleg N. Chupakhin
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira Street 19, 620002 Ekaterinburg, Russia
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23
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Holsapple JS, Schnitzler L, Rusch L, Baldeweg TH, Neubert E, Kruss S, Erpenbeck L. Expansion microscopy of neutrophil nuclear structure and extracellular traps. BIOPHYSICAL REPORTS 2022; 3:100091. [PMID: 36619899 PMCID: PMC9813678 DOI: 10.1016/j.bpr.2022.100091] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022]
Abstract
Neutrophils are key players of the immune system and possess an arsenal of effector functions, including the ability to form and expel neutrophil extracellular traps (NETs) in a process termed NETosis. During NETosis, the nuclear DNA/chromatin expands until it fills the whole cell and is released into the extracellular space. NETs are composed of DNA decorated with histones, proteins, or peptides, and NETosis is implicated in many diseases. Resolving the structure of the nucleus in great detail is essential to understand the underlying processes, but so far, superresolution methods have not been applied. Here, we developed an expansion-microscopy-based method and determined the spatial distribution of chromatin/DNA, histone H1, and nucleophosmin with an over fourfold improved resolution (<40-50 nm) and increased information content. It allowed us to identify the punctate localization of nucleophosmin in the nucleus and histone-rich domains in NETotic cells with a size of 54-66 nm. The technique could also be applied to components of the nuclear envelope (lamins B1 and B2) and myeloperoxidase, providing a complete picture of nuclear composition and structure. In conclusion, expansion microscopy enables superresolved imaging of the highly dynamic structure of nuclei in immune cells.
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Affiliation(s)
| | - Lena Schnitzler
- Department of Chemistry, Ruhr-University Bochum, Bochum, Germany
| | - Louisa Rusch
- Department of Dermatology, University Medical Center Göttingen, Göttingen, Germany
| | | | - Elsa Neubert
- Leiden Academic Centre for Drug Research, Leiden University, Leiden, the Netherlands
| | - Sebastian Kruss
- Department of Chemistry, Ruhr-University Bochum, Bochum, Germany,Fraunhofer Institute for Microelectronic Circuits and Systems, Duisburg, Germany,Center for Nanointegration Duisburg-Essen (CENIDE), Duisburg, Germany,Corresponding author
| | - Luise Erpenbeck
- Department of Dermatology, University Hospital Münster, Münster, Germany,Corresponding author
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24
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Sun F, Zhao W, Shen H, Fan N, Zhang J, Liu Q, Xu C, Luo J, Zhao M, Chen Y, Lam KWK, Yang X, Kwok RTK, Lam JWY, Sun J, Zhang H, Tang BZ. Design of Smart Aggregates: Toward Rapid Clinical Diagnosis of Hyperlipidemia in Human Blood. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2207671. [PMID: 36134528 DOI: 10.1002/adma.202207671] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/10/2022] [Indexed: 06/16/2023]
Abstract
Molecular aggregates with environmental responsive properties are desired for their wide practical applications such as bioprobes. Here, a series of smart near-infrared (NIR) luminogens for hyperlipidemia (HLP) diagnosis is reported. The aggregates of these molecules exhibit a twisted intramolecular charge-transfer effect in aqueous media, but aggregation-induced emission in highly viscous media due to the restriction of the intramolecular motion. These aggregates, which can autonomously respond to different environments via switching the aggregation state without changing their chemical structures are described, as "smart aggregates". Intriguingly, these luminogens demonstrate NIR-II and NIR-III luminescence with ultralarge Stokes shifts (>950 nm). Both in vitro detection and in vivo imaging of HLP can be realized in a mouse model. Linear relationships exist between the emission intensity and multiple pathological parameters in blood samples of HLP patients. Thus, the design of smart aggregate facilitates rapid and accurate detection of HLP and provides a promising attempt in aggregate science.
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Affiliation(s)
- Feiyi Sun
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Guangdong-Hong Kong-Macau Joint Laboratory of Optoelectronic and Magnetic Functional Materials, Division of Life Science, and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, P. R. China
| | - Wei Zhao
- Department of Anesthesiology, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, P. R. China
| | - Hanchen Shen
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Guangdong-Hong Kong-Macau Joint Laboratory of Optoelectronic and Magnetic Functional Materials, Division of Life Science, and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, P. R. China
| | - Ni Fan
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, 999077, P. R. China
| | - Jianyu Zhang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Guangdong-Hong Kong-Macau Joint Laboratory of Optoelectronic and Magnetic Functional Materials, Division of Life Science, and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, P. R. China
| | - Qingqing Liu
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, 999077, P. R. China
| | - Changhuo Xu
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Guangdong-Hong Kong-Macau Joint Laboratory of Optoelectronic and Magnetic Functional Materials, Division of Life Science, and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, P. R. China
| | - Jiaming Luo
- Department of Anesthesiology, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, P. R. China
| | - Mengying Zhao
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Guangdong-Hong Kong-Macau Joint Laboratory of Optoelectronic and Magnetic Functional Materials, Division of Life Science, and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, P. R. China
| | - Yuyang Chen
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Guangdong-Hong Kong-Macau Joint Laboratory of Optoelectronic and Magnetic Functional Materials, Division of Life Science, and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, P. R. China
| | - Kristy W K Lam
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Guangdong-Hong Kong-Macau Joint Laboratory of Optoelectronic and Magnetic Functional Materials, Division of Life Science, and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, P. R. China
| | - Xueqin Yang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Guangdong-Hong Kong-Macau Joint Laboratory of Optoelectronic and Magnetic Functional Materials, Division of Life Science, and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, P. R. China
| | - Ryan T K Kwok
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Guangdong-Hong Kong-Macau Joint Laboratory of Optoelectronic and Magnetic Functional Materials, Division of Life Science, and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, P. R. China
| | - Jacky W Y Lam
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Guangdong-Hong Kong-Macau Joint Laboratory of Optoelectronic and Magnetic Functional Materials, Division of Life Science, and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, P. R. China
| | - Jianwei Sun
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Guangdong-Hong Kong-Macau Joint Laboratory of Optoelectronic and Magnetic Functional Materials, Division of Life Science, and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, P. R. China
| | - Hongfei Zhang
- Department of Anesthesiology, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, P. R. China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Guangdong-Hong Kong-Macau Joint Laboratory of Optoelectronic and Magnetic Functional Materials, Division of Life Science, and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, P. R. China
- School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen, 518172, P. R. China
- Center of Aggregation-Induced Emission, South China University of Technology, Guangzhou, 510640, P. R. China
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25
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Cordier BA, Sawaya NPD, Guerreschi GG, McWeeney SK. Biology and medicine in the landscape of quantum advantages. J R Soc Interface 2022; 19:20220541. [PMID: 36448288 PMCID: PMC9709576 DOI: 10.1098/rsif.2022.0541] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Quantum computing holds substantial potential for applications in biology and medicine, spanning from the simulation of biomolecules to machine learning methods for subtyping cancers on the basis of clinical features. This potential is encapsulated by the concept of a quantum advantage, which is contingent on a reduction in the consumption of a computational resource, such as time, space or data. Here, we distill the concept of a quantum advantage into a simple framework to aid researchers in biology and medicine pursuing the development of quantum applications. We then apply this framework to a wide variety of computational problems relevant to these domains in an effort to (i) assess the potential of practical advantages in specific application areas and (ii) identify gaps that may be addressed with novel quantum approaches. In doing so, we provide an extensive survey of the intersection of biology and medicine with the current landscape of quantum algorithms and their potential advantages. While we endeavour to identify specific computational problems that may admit practical advantages throughout this work, the rapid pace of change in the fields of quantum computing, classical algorithms and biological research implies that this intersection will remain highly dynamic for the foreseeable future.
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Affiliation(s)
- Benjamin A. Cordier
- Department of Medical Informatics and Clinical Epidemiology, Oregon Health and Science University, Portland, OR 97202, USA
| | | | | | - Shannon K. McWeeney
- Department of Medical Informatics and Clinical Epidemiology, Oregon Health and Science University, Portland, OR 97202, USA,Knight Cancer Institute, Oregon Health and Science University, Portland, OR 97202, USA,Oregon Clinical and Translational Research Institute, Oregon Health and Science University, Portland, OR 97202, USA
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26
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Gonzalez Pisfil M, Nadelson I, Bergner B, Rottmeier S, Thomae AW, Dietzel S. Stimulated emission depletion microscopy with a single depletion laser using five fluorochromes and fluorescence lifetime phasor separation. Sci Rep 2022; 12:14027. [PMID: 35982114 PMCID: PMC9388687 DOI: 10.1038/s41598-022-17825-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 08/01/2022] [Indexed: 11/15/2022] Open
Abstract
Stimulated emission depletion (STED) microscopy achieves super-resolution by exciting a diffraction-limited volume and then suppressing fluorescence in its outer parts by depletion. Multiple depletion lasers may introduce misalignment and bleaching. Hence, a single depletion wavelength is preferable for multi-color analyses. However, this limits the number of usable spectral channels. Using cultured cells, common staining protocols, and commercially available fluorochromes and microscopes we exploit that the number of fluorochromes in STED or confocal microscopy can be increased by phasor based fluorescence lifetime separation of two dyes with similar emission spectra but different fluorescent lifetimes. In our multi-color FLIM-STED approach two fluorochromes in the near red (exc. 594 nm, em. 600–630) and two in the far red channel (633/641–680), supplemented by a single further redshifted fluorochrome (670/701–750) were all depleted with a single laser at 775 nm thus avoiding potential alignment issues. Generally, this approach doubles the number of fully distinguishable colors in laser scanning microscopy. We provide evidence that eight color FLIM-STED with a single depletion laser would be possible if suitable fluorochromes were identified and we confirm that a fluorochrome may have different lifetimes depending on the molecules to which it is coupled.
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Affiliation(s)
- Mariano Gonzalez Pisfil
- Core Facility Bioimaging and Walter-Brendel-Centre of Experimental Medicine, Biomedical Center, Ludwig-Maximilians-Universität München, Großhaderner Straße 9, 82152, Planegg-Martinsried, Germany
| | - Iliya Nadelson
- Core Facility Bioimaging and Walter-Brendel-Centre of Experimental Medicine, Biomedical Center, Ludwig-Maximilians-Universität München, Großhaderner Straße 9, 82152, Planegg-Martinsried, Germany
| | - Brigitte Bergner
- Core Facility Bioimaging and Walter-Brendel-Centre of Experimental Medicine, Biomedical Center, Ludwig-Maximilians-Universität München, Großhaderner Straße 9, 82152, Planegg-Martinsried, Germany
| | - Sonja Rottmeier
- Core Facility Bioimaging and Walter-Brendel-Centre of Experimental Medicine, Biomedical Center, Ludwig-Maximilians-Universität München, Großhaderner Straße 9, 82152, Planegg-Martinsried, Germany
| | - Andreas W Thomae
- Core Facility Bioimaging and Walter-Brendel-Centre of Experimental Medicine, Biomedical Center, Ludwig-Maximilians-Universität München, Großhaderner Straße 9, 82152, Planegg-Martinsried, Germany
| | - Steffen Dietzel
- Core Facility Bioimaging and Walter-Brendel-Centre of Experimental Medicine, Biomedical Center, Ludwig-Maximilians-Universität München, Großhaderner Straße 9, 82152, Planegg-Martinsried, Germany.
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27
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Klimek R, Asido M, Hermanns V, Junek S, Wachtveitl J, Heckel A. Inactivation of Competitive Decay Channels Leads to Enhanced Coumarin Photochemistry. Chemistry 2022; 28:e202200647. [PMID: 35420716 PMCID: PMC9320935 DOI: 10.1002/chem.202200647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Indexed: 11/30/2022]
Abstract
In the development of photolabile protecting groups, it is of high interest to selectively modify photochemical properties with structural changes as simple as possible. In this work, knowledge of fluorophore optimization was adopted and used to design new coumarin‐ based photocages. Photolysis efficiency was selectively modulated by inactivating competitive decay channels, such as twisted intramolecular charge transfer (TICT) or hydrogen‐bonding, and the photolytic release of the neurotransmitter serotonin was demonstrated. Structural modifications inspired by the fluorophore ATTO 390 led to a significant increase in the uncaging cross section that can be further improved by the simple addition of a double bond. Ultrafast transient absorption spectroscopy gave insights into the underlying solvent‐dependent photophysical dynamics. The chromophores presented here are excellently suited as new photocages in the visible wavelength range due to their simple synthesis and their superior photochemical properties.
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Affiliation(s)
- Robin Klimek
- Institute for Organic Chemistry and Chemical Biology Goethe University Frankfurt Max-von-Laue Str. 9 60438 Frankfurt Germany
| | - Marvin Asido
- Institute of Physical and Theoretical Chemistry Goethe University Frankfurt Max-von-Laue Str. 9 60438 Frankfurt Germany
| | - Volker Hermanns
- Institute for Organic Chemistry and Chemical Biology Goethe University Frankfurt Max-von-Laue Str. 9 60438 Frankfurt Germany
| | - Stephan Junek
- Max Planck Institute for Brain Research Max-von-Laue Str. 4 60438 Frankfurt Germany
| | - Josef Wachtveitl
- Institute of Physical and Theoretical Chemistry Goethe University Frankfurt Max-von-Laue Str. 9 60438 Frankfurt Germany
| | - Alexander Heckel
- Institute for Organic Chemistry and Chemical Biology Goethe University Frankfurt Max-von-Laue Str. 9 60438 Frankfurt Germany
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28
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Algar WR, Krause KD. Developing FRET Networks for Sensing. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2022; 15:17-36. [PMID: 35300526 DOI: 10.1146/annurev-anchem-061020-014925] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Förster resonance energy transfer (FRET) is a widely used fluorescence-based sensing mechanism. To date, most implementations of FRET sensors have relied on a discrete donor-acceptor pair for detection of each analytical target. FRET networks are an emerging concept in which target recognition perturbs a set of interconnected FRET pathways between multiple emitters. Here, we review the energy transfer topologies and scaffold materials for FRET networks, propose a general nomenclature, and qualitatively summarize the dynamics of the competitive, sequential, homoFRET, and heteroFRET pathways that constitute FRET networks. Implementations of FRET networks for sensing are also described, including concentric FRET probes, other single-vector multiplexing, and logic gates and switches. Unresolved questions and future research directions for current systems are discussed, as are potential but currently unexplored applications of FRET networks in sensing.
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Affiliation(s)
- W Russ Algar
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada;
| | - Katherine D Krause
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada;
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29
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Nguyen B, Tufenkji N. Single-Particle Resolution Fluorescence Microscopy of Nanoplastics. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:6426-6435. [PMID: 35472273 PMCID: PMC9118545 DOI: 10.1021/acs.est.1c08480] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 03/30/2022] [Accepted: 04/04/2022] [Indexed: 05/15/2023]
Abstract
Understanding of nanoplastic prevalence and toxicology is limited by imaging challenges resulting from their small size. Fluorescence microscopy is widely applied to track and identify microplastics in laboratory studies and environmental samples. However, conventional fluorescence microscopy, due to diffraction, lacks the resolution to precisely localize nanoplastics in tissues, distinguish them from free dye, or quantify them in environmental samples. To address these limitations, we developed techniques to label nanoplastics for imaging with stimulated emission depletion (STED) microscopy to achieve resolution at an order of magnitude superior to conventional fluorescence microscopy. These techniques include (1) passive sorption; (2) swell incorporation; and (3) covalent coupling of STED-compatible fluorescence dyes to nanoplastics. We demonstrate that our labeling techniques, combined with STED microscopy, can be used to resolve nanoplastics of different shapes and compositions as small as 50 nm. The longevity of dye labeling is demonstrated in different media and conditions of biological and environmental relevance. We also test STED imaging of nanoplastics in exposure experiments with the model worm Caenorhabditis elegans. Our work shows the value of the method for detection and localization of nanoplastics as small as 50 nm in a whole animal without disruption of the tissue. These techniques will allow more precise localization and quantification of nanoplastics in complex matrices such as biological tissues in exposure studies.
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Affiliation(s)
- Brian Nguyen
- Department of Chemical Engineering, McGill University, 3610 University Street, Montreal, Quebec H3A 0C5, Canada
| | - Nathalie Tufenkji
- Department of Chemical Engineering, McGill University, 3610 University Street, Montreal, Quebec H3A 0C5, Canada
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30
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A synergistic strategy to develop photostable and bright dyes with long Stokes shift for nanoscopy. Nat Commun 2022; 13:2264. [PMID: 35477933 PMCID: PMC9046415 DOI: 10.1038/s41467-022-29547-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 03/11/2022] [Indexed: 11/08/2022] Open
Abstract
The quality and application of super-resolution fluorescence imaging greatly lie in the dyes’ properties, including photostability, brightness, and Stokes shift. Here we report a synergistic strategy to simultaneously improve such properties of regular fluorophores. Introduction of quinoxaline motif with fine-tuned electron density to conventional rhodamines generates new dyes with vibration structure and inhibited twisted-intramolecular-charge-transfer (TICT) formation synchronously, thus increasing the brightness and photostability while enlarging Stokes shift. The new fluorophore YL578 exhibits around twofold greater brightness and Stokes shift than its parental fluorophore, Rhodamine B. Importantly, in Stimulated Emission Depletion (STED) microscopy, YL578 derived probe possesses a superior photostability and thus renders threefold more frames than carbopyronine based probes (CPY-Halo and 580CP-Halo), known as photostable fluorophores for STED imaging. Furthermore, the strategy is well generalized to offer a new class of bright and photostable fluorescent probes with long Stokes shift (up to 136 nm) for bioimaging and biosensing. Super-resolution microscopy is a powerful tool for cellular studies but requires bright and stable fluorescent probes. Here, the authors report on a strategy to introduce quinoxaline motifs to conventional probes to make them brighter, more photostable, larger Stokes shift, and demonstrate the probes for biosensing applications.
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31
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Kielesiński Ł, Deperasińska I, Morawski O, Vygranenko KV, Ouellette ET, Gryko DT. Polarized, V-Shaped, and Conjoined Biscoumarins: From Lack of Dipole Moment Alignment to High Brightness. J Org Chem 2022; 87:5961-5975. [PMID: 35410474 PMCID: PMC9087199 DOI: 10.1021/acs.joc.2c00232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
![]()
Eleven conjoined
coumarins possessing a chromeno[3,4-c]chromene-6,7-dione
skeleton have been synthesized via the reaction
of electron-rich phenols with esters of coumarin-3-carboxylic acids,
catalyzed by either Lewis acids or 4-dimethylaminopyridine. Furthermore,
Michael-type addition to angular benzo[f]coumarins
is possible, leading to conjugated helical systems. Arrangement of
the electron-donating amino groups at diverse positions on this heterocyclic
skeleton makes it possible to obtain π-expanded coumarins with
emission either sensitive to, or entirely independent of, solvent
polarity with large Stokes shifts. Computational studies have provided
a rationale for moderate solvatochromic effects unveiling the lack
of collinearity of the dipole moments in the ground and excited states.
Depending on the functional groups present, the obtained dyes are
highly polarized with dipole moments of ∼14 D in the ground
state and ∼20–25 D in the excited state. Strong emission
in nonpolar solvents, in spite of the inclusion of a NO2 group, is rationalized by the fact that the intramolecular charge
transfer introduced into these molecules is strong enough to suppress
intersystem crossing yet weak enough to prevent the formation of dark
twisted intramolecular charge transfer states. Photochemical transformation
of the dye possessing a chromeno[3,4-c]pyridine-4,5-dione
scaffold led to the formation of a spirocyclic benzo[g]coumarin.
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Affiliation(s)
- Łukasz Kielesiński
- Institute of Organic Chemistry of Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Irena Deperasińska
- Institute of Physics of Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
| | - Olaf Morawski
- Institute of Physics of Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
| | - Kateryna V Vygranenko
- Institute of Organic Chemistry of Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Erik T Ouellette
- Department of Chemistry, University of California, Berkeley, 420 Latimer Hall, Berkeley, California 94720, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Daniel T Gryko
- Institute of Organic Chemistry of Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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32
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Kwon J, Elgawish MS, Shim S. Bleaching-Resistant Super-Resolution Fluorescence Microscopy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2101817. [PMID: 35088584 PMCID: PMC8948665 DOI: 10.1002/advs.202101817] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 01/07/2022] [Indexed: 05/08/2023]
Abstract
Photobleaching is the permanent loss of fluorescence after extended exposure to light and is a major limiting factor in super-resolution microscopy (SRM) that restricts spatiotemporal resolution and observation time. Strategies for preventing or overcoming photobleaching in SRM are reviewed developing new probes and chemical environments. Photostabilization strategies are introduced first, which are borrowed from conventional fluorescence microscopy, that are employed in SRM. SRM-specific strategies are then highlighted that exploit the on-off transitions of fluorescence, which is the key mechanism for achieving super-resolution, which are becoming new routes to address photobleaching in SRM. Off states can serve as a shelter from excitation by light or an exit to release a damaged probe and replace it with a fresh one. Such efforts in overcoming the photobleaching limits are anticipated to enhance resolution to molecular scales and to extend the observation time to physiological lifespans.
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Affiliation(s)
- Jiwoong Kwon
- Department of Biophysics and Biophysical ChemistryJohns Hopkins UniversityBaltimoreMD21205USA
| | - Mohamed Saleh Elgawish
- Department of ChemistryKorea UniversitySeoul02841Republic of Korea
- Medicinal Chemistry DepartmentFaculty of PharmacySuez Canal UniversityIsmailia41522Egypt
| | - Sang‐Hee Shim
- Department of ChemistryKorea UniversitySeoul02841Republic of Korea
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33
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Storti B, Carlotti B, Chiellini G, Ruglioni M, Salvadori T, Scotto M, Elisei F, Diaspro A, Bianchini P, Bizzarri R. An Efficient Aequorea victoria Green Fluorescent Protein for Stimulated Emission Depletion Super-Resolution Microscopy. Int J Mol Sci 2022; 23:ijms23052482. [PMID: 35269626 PMCID: PMC8910729 DOI: 10.3390/ijms23052482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/18/2022] [Accepted: 02/22/2022] [Indexed: 11/16/2022] Open
Abstract
In spite of their value as genetically encodable reporters for imaging in living systems, fluorescent proteins have been used sporadically for stimulated emission depletion (STED) super-resolution imaging, owing to their moderate photophysical resistance, which does not enable reaching resolutions as high as for synthetic dyes. By a rational approach combining steady-state and ultrafast spectroscopy with gated STED imaging in living and fixed cells, we here demonstrate that F99S/M153T/V163A GFP (c3GFP) represents an efficient genetic reporter for STED, on account of no excited state absorption at depletion wavelengths <600 nm and a long emission lifetime. This makes c3GFP a valuable alternative to more common, but less photostable, EGFP and YFP/Citrine mutants for STED imaging studies targeting the green-yellow region of the optical spectrum.
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Affiliation(s)
- Barbara Storti
- NEST, Scuola Normale Superiore and Istituto Nanoscienze-CNR, Piazza San Silvestro 12, 56127 Pisa, Italy;
- Correspondence:
| | - Benedetta Carlotti
- Department of Chemistry, Biology and Biotechnology and CEMIN, University of Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy; (B.C.); (F.E.)
| | - Grazia Chiellini
- Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, University of Pisa, Via Roma 65, 56126 Pisa, Italy; (G.C.); (M.R.); (T.S.)
| | - Martina Ruglioni
- Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, University of Pisa, Via Roma 65, 56126 Pisa, Italy; (G.C.); (M.R.); (T.S.)
| | - Tiziano Salvadori
- Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, University of Pisa, Via Roma 65, 56126 Pisa, Italy; (G.C.); (M.R.); (T.S.)
| | - Marco Scotto
- Nanoscopy, CHT, Istituto Italiano di Tecnologia, Via E. Melen 83, 16152 Genova, Italy; (M.S.); (A.D.); (P.B.)
| | - Fausto Elisei
- Department of Chemistry, Biology and Biotechnology and CEMIN, University of Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy; (B.C.); (F.E.)
| | - Alberto Diaspro
- Nanoscopy, CHT, Istituto Italiano di Tecnologia, Via E. Melen 83, 16152 Genova, Italy; (M.S.); (A.D.); (P.B.)
- DIFILAB, Dipartimento di Fisica, Università degli Studi di Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - Paolo Bianchini
- Nanoscopy, CHT, Istituto Italiano di Tecnologia, Via E. Melen 83, 16152 Genova, Italy; (M.S.); (A.D.); (P.B.)
| | - Ranieri Bizzarri
- NEST, Scuola Normale Superiore and Istituto Nanoscienze-CNR, Piazza San Silvestro 12, 56127 Pisa, Italy;
- Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, University of Pisa, Via Roma 65, 56126 Pisa, Italy; (G.C.); (M.R.); (T.S.)
- Nanoscopy, CHT, Istituto Italiano di Tecnologia, Via E. Melen 83, 16152 Genova, Italy; (M.S.); (A.D.); (P.B.)
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34
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Eustáquio R, Ramalho JPP, Caldeira AT, Pereira A. New Red-Shifted 4-Styrylcoumarin Derivatives as Potential Fluorescent Labels for Biomolecules. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27051461. [PMID: 35268562 PMCID: PMC8912076 DOI: 10.3390/molecules27051461] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 11/30/2022]
Abstract
Important scientific areas, such as cellular biology, medicine, pharmacy, and environmental sciences, are dependent on very sensitive analytical techniques to track and detect biomolecules. In this work, we develop a simple, low-cost and effective synthetic strategy to produce new red-shifted 4-styrylcoumarin derivatives as promising inexpensive fluorescent labels for biomolecules. The extension of the delocalized π-electron system results in bathochromic shifts in these new coumarin derivatives, which also present large Stokes shifts. In addition, density functional theory and time-dependent density functional theory calculations helped to rationalize the photophysical properties observed by the experimental results.
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Affiliation(s)
- Raquel Eustáquio
- Hercules Laboratory, University of Évora, Largo Marquês de Marialva 8, 7000-809 Évora, Portugal; (R.E.); (A.T.C.)
| | - João P. Prates Ramalho
- Chemistry Department, School of Sciences and Technology, University of Évora, Rua Romão Ramalho 59, 7000-671 Évora, Portugal;
- Laqv-Requimte, University of Évora, Rua Romão Ramalho 59, 7000-671 Évora, Portugal
| | - Ana T. Caldeira
- Hercules Laboratory, University of Évora, Largo Marquês de Marialva 8, 7000-809 Évora, Portugal; (R.E.); (A.T.C.)
- Chemistry Department, School of Sciences and Technology, University of Évora, Rua Romão Ramalho 59, 7000-671 Évora, Portugal;
| | - António Pereira
- Hercules Laboratory, University of Évora, Largo Marquês de Marialva 8, 7000-809 Évora, Portugal; (R.E.); (A.T.C.)
- Chemistry Department, School of Sciences and Technology, University of Évora, Rua Romão Ramalho 59, 7000-671 Évora, Portugal;
- Correspondence: ; Tel.: +351-919190867
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35
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Fatykhov RF, Sharapov AD, Starnovskaya ES, Shtaitz YK, Savchuk MI, Kopchuk DS, Nikonov IL, Zyryanov GV, Khalymbadzha IA, Chupakhin ON. Coumarin-pyridine push-pull fluorophores: Synthesis and photophysical studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 267:120499. [PMID: 34749256 DOI: 10.1016/j.saa.2021.120499] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 10/08/2021] [Accepted: 10/10/2021] [Indexed: 06/13/2023]
Abstract
A series of coumarin-pyridine-based push-pull fluorophores were prepared starting from 1,2,4-triazines by using direct C-H functionalization (SNH-reaction)-Diels-Alder-retro Diels-Alder domino reaction sequence. This efficient synthetic strategy allowed to obtain a series of 19 coumarin-pyridine fluorophores. Their photophysical properties were studied. While pyridine-substituted derivatives of 4-alkylcoumarins may be considered as alternative to coumarin dyes characterized by emission maxima mainly in a visible region with wavelengths of 402-415 nm, absorption in the UV range at 210-307 nm, and good photoluminescence quantum yields of 6-19%, all the derivatives of 4-phenylcoumarin did not exhibit any noticeable fluorescence. More detailed photophysical studies were carried out for two the most representative derivatives of 4-alkyl-coumarin-pyridines to demonstrate their positive solvatochromism, and the collected data were analyzed by using Lippert-Mataga equation, as well as Kosower and Dimroth/Reichardt scales. The obtained results demonstrate that the combining two chromophore systems, such as 2,5-diarylpyridine and coumarin ones, is promising in terms of improving the photophysical properties of the new coumarin-pyridine hybrid compounds.
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Affiliation(s)
- Ramil F Fatykhov
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, Ekaterinburg 620002, Russian Federation
| | - Ainur D Sharapov
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, Ekaterinburg 620002, Russian Federation
| | - Ekaterina S Starnovskaya
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, Ekaterinburg 620002, Russian Federation; Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Kovalevskoy 22, Ekaterinburg 620219, Russian Federation
| | - Yaroslav K Shtaitz
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, Ekaterinburg 620002, Russian Federation
| | - Maria I Savchuk
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, Ekaterinburg 620002, Russian Federation; Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Kovalevskoy 22, Ekaterinburg 620219, Russian Federation
| | - Dmitry S Kopchuk
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, Ekaterinburg 620002, Russian Federation; Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Kovalevskoy 22, Ekaterinburg 620219, Russian Federation
| | - Igor L Nikonov
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, Ekaterinburg 620002, Russian Federation; Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Kovalevskoy 22, Ekaterinburg 620219, Russian Federation
| | - Grigory V Zyryanov
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, Ekaterinburg 620002, Russian Federation; Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Kovalevskoy 22, Ekaterinburg 620219, Russian Federation
| | - Igor A Khalymbadzha
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, Ekaterinburg 620002, Russian Federation; Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Kovalevskoy 22, Ekaterinburg 620219, Russian Federation.
| | - Oleg N Chupakhin
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, Ekaterinburg 620002, Russian Federation; Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Kovalevskoy 22, Ekaterinburg 620219, Russian Federation
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36
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Bioorthogonal Ligation‐Activated Fluorogenic FRET Dyads. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202111855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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37
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Eustáquio R, Prates Ramalho JP, Caldeira AT, Pereira A. Development of new 2-piperidinium-4-styrylcoumarin derivatives with large Stokes shifts as potential fluorescent labels for biomolecules. RSC Adv 2022; 12:8477-8484. [PMID: 35424831 PMCID: PMC8984815 DOI: 10.1039/d2ra00716a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 03/03/2022] [Indexed: 11/21/2022] Open
Abstract
New 2-piperidinium-4-styrylcoumarin derivatives, with large Stokes shifts and high fluorescence quantum yields, as potential fluorescent labels for biomolecules.
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Affiliation(s)
- Raquel Eustáquio
- HERCULES Laboratory, City University of Macau Chair in Sustainable Heritage, University of Évora, Largo Marquês de Marialva 8, 7000-809 Évora, Portugal
| | - João P. Prates Ramalho
- Chemistry Department, School of Sciences and Technology, University of Évora, Rua Romão Ramalho 59, 7000-671 Évora, Portugal
- LAQV-REQUIMTE, University of Évora, Rua Romão Ramalho 59, 7000-671 Évora, Portugal
| | - Ana T. Caldeira
- HERCULES Laboratory, City University of Macau Chair in Sustainable Heritage, University of Évora, Largo Marquês de Marialva 8, 7000-809 Évora, Portugal
- Chemistry Department, School of Sciences and Technology, University of Évora, Rua Romão Ramalho 59, 7000-671 Évora, Portugal
| | - António Pereira
- HERCULES Laboratory, City University of Macau Chair in Sustainable Heritage, University of Évora, Largo Marquês de Marialva 8, 7000-809 Évora, Portugal
- Chemistry Department, School of Sciences and Technology, University of Évora, Rua Romão Ramalho 59, 7000-671 Évora, Portugal
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38
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Synthesis, optical, electrochemical and theoretical studies of 2,3-Di(pyridin-2-yl)quinoxaline amine derivatives as blue-orange emitters for organic electronics. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131541] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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39
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Albitz E, Kern D, Kormos A, Bojtár M, Török G, Biró A, Szatmári Á, Németh K, Kele P. Bioorthogonal Ligation-Activated Fluorogenic FRET Dyads. Angew Chem Int Ed Engl 2021; 61:e202111855. [PMID: 34861094 PMCID: PMC9305863 DOI: 10.1002/anie.202111855] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Indexed: 12/04/2022]
Abstract
An energy transfer‐based signal amplification relay concept enabling transmission of bioorthogonally activatable fluorogenicity of blue‐excitable coumarins to yellow/red emitting cyanine frames is presented. Such relay mechanism resulted in improved cyanine fluorogenicities together with increased photostabilities and large apparent Stokes‐shifts allowing lower background fluorescence even in no‐wash bioorthogonal fluorogenic labeling schemes of intracellular structures in live cells. These energy transfer dyads sharing the same donor moiety together with their parent donor molecule allowed three‐color imaging of intracellular targets using one single excitation source with separate emission windows. Sub‐diffraction imaging of intracellular structures using the bioorthogonally activatable FRET dyads by STED microscopy is also presented.
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Affiliation(s)
- Evelin Albitz
- Chemical Biology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Magyar tudósok krt. 2, 1117, Budapest, Hungary.,Hevesy György PhD School of Chemistry, Eötvös Loránd University, Pázmány Péter sétány 1/a, 1117, Budapest, Hungary
| | - Dóra Kern
- Chemical Biology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Magyar tudósok krt. 2, 1117, Budapest, Hungary.,Hevesy György PhD School of Chemistry, Eötvös Loránd University, Pázmány Péter sétány 1/a, 1117, Budapest, Hungary
| | - Attila Kormos
- Chemical Biology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Magyar tudósok krt. 2, 1117, Budapest, Hungary
| | - Márton Bojtár
- Chemical Biology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Magyar tudósok krt. 2, 1117, Budapest, Hungary
| | - György Török
- Chemical Biology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Magyar tudósok krt. 2, 1117, Budapest, Hungary.,Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó u. 37-47, 1094, Budapest, Hungary
| | - Adrienn Biró
- Chemical Biology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Magyar tudósok krt. 2, 1117, Budapest, Hungary
| | - Ágnes Szatmári
- Chemical Biology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Magyar tudósok krt. 2, 1117, Budapest, Hungary
| | - Krisztina Németh
- Chemical Biology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Magyar tudósok krt. 2, 1117, Budapest, Hungary
| | - Péter Kele
- Chemical Biology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Magyar tudósok krt. 2, 1117, Budapest, Hungary
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Benaissa H, Ounoughi K, Aujard I, Fischer E, Goïame R, Nguyen J, Tebo AG, Li C, Le Saux T, Bertolin G, Tramier M, Danglot L, Pietrancosta N, Morin X, Jullien L, Gautier A. Engineering of a fluorescent chemogenetic reporter with tunable color for advanced live-cell imaging. Nat Commun 2021; 12:6989. [PMID: 34848727 PMCID: PMC8633346 DOI: 10.1038/s41467-021-27334-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 11/12/2021] [Indexed: 11/09/2022] Open
Abstract
Biocompatible fluorescent reporters with spectral properties spanning the entire visible spectrum are indispensable tools for imaging the biochemistry of living cells and organisms in real time. Here, we report the engineering of a fluorescent chemogenetic reporter with tunable optical and spectral properties. A collection of fluorogenic chromophores with various electronic properties enables to generate bimolecular fluorescent assemblies that cover the visible spectrum from blue to red using a single protein tag engineered and optimized by directed evolution and rational design. The ability to tune the fluorescence color and properties through simple molecular modulation provides a broad experimental versatility for imaging proteins in live cells, including neurons, and in multicellular organisms, and opens avenues for optimizing Förster resonance energy transfer (FRET) biosensors in live cells. The ability to tune the spectral properties and fluorescence performance enables furthermore to match the specifications and requirements of advanced super-resolution imaging techniques.
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Affiliation(s)
- Hela Benaissa
- Sorbonne Université, École Normale Supérieure, Université PSL, CNRS, Laboratoire des Biomolécules, LBM, 75005, Paris, France
- PASTEUR, Department of Chemistry, École Normale Supérieure, Université PSL, Sorbonne Université, CNRS, 75005, Paris, France
| | - Karim Ounoughi
- PASTEUR, Department of Chemistry, École Normale Supérieure, Université PSL, Sorbonne Université, CNRS, 75005, Paris, France
| | - Isabelle Aujard
- PASTEUR, Department of Chemistry, École Normale Supérieure, Université PSL, Sorbonne Université, CNRS, 75005, Paris, France
| | - Evelyne Fischer
- Institut de Biologie de l'ENS (IBENS), École Normale Supérieure, CNRS, INSERM, Université PSL, 75005, Paris, France
| | - Rosette Goïame
- Institut de Biologie de l'ENS (IBENS), École Normale Supérieure, CNRS, INSERM, Université PSL, 75005, Paris, France
| | - Julie Nguyen
- Université de Paris, NeurImag Imaging Facility, Institute of Psychiatry and Neuroscience of Paris, INSERM U1266, 75014, Paris, France
| | - Alison G Tebo
- Sorbonne Université, École Normale Supérieure, Université PSL, CNRS, Laboratoire des Biomolécules, LBM, 75005, Paris, France
- PASTEUR, Department of Chemistry, École Normale Supérieure, Université PSL, Sorbonne Université, CNRS, 75005, Paris, France
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, 20147, USA
| | - Chenge Li
- PASTEUR, Department of Chemistry, École Normale Supérieure, Université PSL, Sorbonne Université, CNRS, 75005, Paris, France
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Thomas Le Saux
- PASTEUR, Department of Chemistry, École Normale Supérieure, Université PSL, Sorbonne Université, CNRS, 75005, Paris, France
| | - Giulia Bertolin
- University of Rennes, Centre National de la Recherche Scientifique (CNRS), (IGDR) Institute of Genetics and Development of Rennes, Unité Mixte de Recherche (UMR) 6290, F-35000, Rennes, France
| | - Marc Tramier
- University of Rennes, Centre National de la Recherche Scientifique (CNRS), (IGDR) Institute of Genetics and Development of Rennes, Unité Mixte de Recherche (UMR) 6290, F-35000, Rennes, France
| | - Lydia Danglot
- Université de Paris, NeurImag Imaging Facility, Institute of Psychiatry and Neuroscience of Paris, INSERM U1266, 75014, Paris, France
- Université de Paris, Institute of Psychiatry and Neuroscience of Paris, INSERM U1266, Membrane Traffic in Healthy & Diseased Brain, 75014, Paris, France
| | - Nicolas Pietrancosta
- Sorbonne Université, École Normale Supérieure, Université PSL, CNRS, Laboratoire des Biomolécules, LBM, 75005, Paris, France
- Neuroscience Paris Seine-Institut de Biologie Paris Seine (NPS-IBPS) INSERM, CNRS, Sorbonne Université, Paris, France
| | - Xavier Morin
- Institut de Biologie de l'ENS (IBENS), École Normale Supérieure, CNRS, INSERM, Université PSL, 75005, Paris, France
| | - Ludovic Jullien
- PASTEUR, Department of Chemistry, École Normale Supérieure, Université PSL, Sorbonne Université, CNRS, 75005, Paris, France
| | - Arnaud Gautier
- Sorbonne Université, École Normale Supérieure, Université PSL, CNRS, Laboratoire des Biomolécules, LBM, 75005, Paris, France.
- PASTEUR, Department of Chemistry, École Normale Supérieure, Université PSL, Sorbonne Université, CNRS, 75005, Paris, France.
- Institut Universitaire de France, Paris, France.
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41
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Klaus M, Zurek PJ, Kaminski TS, Pushpanath A, Neufeld K, Hollfelder F. Ultrahigh-Throughput Detection of Enzymatic Alcohol Dehydrogenase Activity in Microfluidic Droplets with a Direct Fluorogenic Assay. Chembiochem 2021; 22:3292-3299. [PMID: 34643305 PMCID: PMC9291573 DOI: 10.1002/cbic.202100322] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 09/13/2021] [Indexed: 12/02/2022]
Abstract
The exploration of large DNA libraries of metagenomic or synthetic origin is greatly facilitated by ultrahigh‐throughput assays that use monodisperse water‐in‐oil emulsion droplets as sequestered reaction compartments. Millions of samples can be generated and analysed in microfluidic devices at kHz speeds, requiring only micrograms of reagents. The scope of this powerful platform for the discovery of new sequence space is, however, hampered by the limited availability of assay substrates, restricting the functions and reaction types that can be investigated. Here, we broaden the scope of detectable biochemical transformations in droplet microfluidics by introducing the first fluorogenic assay for alcohol dehydrogenases (ADHs) in this format. We have synthesized substrates that release a pyranine fluorophore (8‐hydroxy‐1,3,6‐pyrenetrisulfonic acid, HPTS) when enzymatic turnover occurs. Pyranine is well retained in droplets for >6 weeks (i. e. 14‐times longer than fluorescein), avoiding product leakage and ensuring excellent assay sensitivity. Product concentrations as low as 100 nM were successfully detected, corresponding to less than one turnover per enzyme molecule on average. The potential of our substrate design was demonstrated by efficient recovery of a bona fide ADH with an >800‐fold enrichment. The repertoire of droplet screening is enlarged by this sensitive and direct fluorogenic assay to identify dehydrogenases for biocatalytic applications.
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Affiliation(s)
- Miriam Klaus
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, CB2 1GA, Cambridge, UK.,Current address: ICB Nuvisan GmbH, Müllerstraße 178, 13353, Berlin, Germany
| | - Paul Jannis Zurek
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, CB2 1GA, Cambridge, UK.,Johnson Matthey Plc, 260 Cambridge Science Park, CB4 0WE, Cambridge, UK.,Current address: BioNTech Cell & Gene Therapies GmbH, An der Goldgrube 12, 55131, Mainz, Germany
| | - Tomasz S Kaminski
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, CB2 1GA, Cambridge, UK.,Current address: Department of Environmental Microbiology and Biotechnology, Institute of Microbiology, Faculty of Biology, University of Warsaw, Miecznikowa 1, 02-096, Warsaw, Poland
| | - Ahir Pushpanath
- Johnson Matthey Plc, 260 Cambridge Science Park, CB4 0WE, Cambridge, UK
| | - Katharina Neufeld
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, CB2 1GA, Cambridge, UK.,Johnson Matthey Plc, 260 Cambridge Science Park, CB4 0WE, Cambridge, UK.,Current address: Janssen Pharmaceutica, Turnhoutseweg 30, 2340, Beerse, Belgium
| | - Florian Hollfelder
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, CB2 1GA, Cambridge, UK
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42
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Yao Z, Caldwell DR, Love AC, Kolbaba-Kartchner B, Mills JH, Schnermann MJ, Prescher JA. Coumarin luciferins and mutant luciferases for robust multi-component bioluminescence imaging. Chem Sci 2021; 12:11684-11691. [PMID: 34659703 PMCID: PMC8442684 DOI: 10.1039/d1sc03114g] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 07/20/2021] [Indexed: 12/21/2022] Open
Abstract
Multi-component bioluminescence imaging requires an expanded collection of luciferase-luciferin pairs that emit far-red or near-infrared light. Toward this end, we prepared a new class of luciferins based on a red-shifted coumarin scaffold. These probes (CouLuc-1s) were accessed in a two-step sequence via direct modification of commercial dyes. The bioluminescent properties of the CouLuc-1 analogs were also characterized, and complementary luciferase enzymes were identified using a two-pronged screening strategy. The optimized enzyme-substrate pairs displayed robust photon outputs and emitted a significant portion of near-infrared light. The CouLuc-1 scaffolds are also structurally distinct from existing probes, enabling rapid multi-component imaging. Collectively, this work provides novel bioluminescent tools along with a blueprint for crafting additional fluorophore-derived probes for multiplexed imaging.
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Affiliation(s)
- Zi Yao
- Department of Chemistry, University of California Irvine CA USA
| | - Donald R Caldwell
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute Frederick MD USA
| | - Anna C Love
- Department of Chemistry, University of California Irvine CA USA
| | - Bethany Kolbaba-Kartchner
- School of Molecular Sciences, Arizona State University Tempe AZ USA
- The Biodesign Center for Molecular Design and Biomimetics, Arizona State University Tempe AZ USA
| | - Jeremy H Mills
- School of Molecular Sciences, Arizona State University Tempe AZ USA
- The Biodesign Center for Molecular Design and Biomimetics, Arizona State University Tempe AZ USA
| | - Martin J Schnermann
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute Frederick MD USA
| | - Jennifer A Prescher
- Department of Chemistry, University of California Irvine CA USA
- Department of Molecular Biology & Biochemistry, University of California Irvine CA USA
- Department of Pharmaceutical Sciences, University of California Irvine CA USA
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43
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Wolfbeis OS. Fluorescent chameleon labels for bioconjugation and imaging of proteins, nucleic acids, biogenic amines and surface amino groups. a review. Methods Appl Fluoresc 2021; 9. [PMID: 34340216 DOI: 10.1088/2050-6120/ac1a0a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 08/02/2021] [Indexed: 12/14/2022]
Abstract
Chameleon labels (ChLs) possess the unique property of changing (visible) color and fluorescence on binding to amino groups of biomolecules. MostChLs react with primary aliphatic amino groups such as those in lysine or with amino groups artificially introduced into polynucleic acids or saccharides, but someothers also react with secondary amino groups. Under controlled circumstances, the reactions are fairly specific. The review is subdivided into the following sections: (1) An introduction and classification of fluorescent labels; (2) pyrylium labels that undergo shortwave color changes upon labelling, typically from blue to red; (3) polymethine type of labels (that also undergo shortwave color changes, typically from green to blue; (4) various other (less common) chromogenic and fluorogenic systems; (5) hemicyanine labels that undergolongwavecolor changes, typically from yellow to purple; (6) the application of ChLs to labeling of proteins and oligonucleotides; (7) applications to fluorometric assays and sensing; (8) applications to fluorescence imaging of biomolecules; (9) applications in studies on affinity interactions (receptor-ligand binding); (10) applications in surface and interface chemistry; and (11) applications in chromatography, electrophoresis and isotachophoresis of biomolecules.
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Affiliation(s)
- Otto S Wolfbeis
- University of Regensburg, Institute of Analytical Chemistry, Chemo- and Biosensors, 94040 Regensburg, Germany
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44
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Zhang F, Liu Y, Yang B, Guan P, Chai J, Wen G, Liu B. Tunable NIR AIE-active optical materials for lipid droplet imaging in typical model organisms and photodynamic therapy. J Mater Chem B 2021; 9:2417-2427. [PMID: 33623937 DOI: 10.1039/d0tb02801k] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Near infrared (NIR) luminescent materials with aggregation-induced emission (AIE) features have attracted enormous attention in the areas of medical imaging and diagnostic therapeutics because of their low background fluorescence and strong tissue penetration. This study reports a series of easily synthesized AIEgen molecules that feature NIR emission. These molecules have a donor-donor-π-acceptor (D1-D2-π-A) structure with intramolecular charge transfer (ICT) character. The nature of charge transfer transition can be modified by different structures of D2, i.e. phenyl, thiophene, and furan ring. These AIEgens have high selectivity towards lipid droplets (LDs) in vitro and in vivo, such as zebrafish, Caenorhabditis elegans, and oil crop tissue. In addition, the effect of photodynamic therapy (PDT) on SMMC-7721 cells was investigated, and the results indicate that these AIEgens have potential application for PDT on cancer cells with white light illumination. This study reveals that these triphenylamine (TPA)-based AIEgens have great potential for biological imaging and preclinical applications of PDT.
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Affiliation(s)
- Fei Zhang
- Institute of Molecular Science, Engineering Research Center for Sewage Treatment of Shanxi Province, Shanxi University, Taiyuan, 030006, China.
| | - Yaoming Liu
- Scientific Instrument Center of Shanxi University, Taiyuan, China
| | - Binsheng Yang
- Institute of Molecular Science, Engineering Research Center for Sewage Treatment of Shanxi Province, Shanxi University, Taiyuan, 030006, China.
| | - Pengli Guan
- Institute of Molecular Science, Engineering Research Center for Sewage Treatment of Shanxi Province, Shanxi University, Taiyuan, 030006, China.
| | - Jie Chai
- Department of Chemistry, Jinzhong University, Taiyuan, 030619, China
| | - Guangming Wen
- Department of Chemistry, Jinzhong University, Taiyuan, 030619, China
| | - Bin Liu
- Institute of Molecular Science, Engineering Research Center for Sewage Treatment of Shanxi Province, Shanxi University, Taiyuan, 030006, China.
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Gonzalez Pisfil M, Rohilla S, König M, Krämer B, Patting M, Koberling F, Erdmann R. Triple-Color STED Nanoscopy: Sampling Absorption Spectra Differences for Efficient Linear Species Unmixing. J Phys Chem B 2021; 125:5694-5705. [PMID: 34048256 DOI: 10.1021/acs.jpcb.0c11390] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Stimulated emission depletion (STED) in confocal fluorescence microscopy enables a visualization of biological structures within cells far below the optical diffraction limit. To meet the demand in the field for simultaneous investigations of multiple species within a cell, a couple of different STED techniques have been proposed, each with their own challenges. By systemically exploiting spectral differences in the absorption of fluorescent labels, we present a novel, beneficial approach to multispecies STED nanoscopy. By using three excitation wavelengths in nanosecond pulsed interleaved excitation (PIE) mode, we probe quasi simultaneously multiple species with fluorescent labels having absorption maxima as close as 13 nm. The acquired image is decomposed into its single species contributions by application of a linear unmixing algorithm based on present reference patterns. For multispecies images containing single species regions, we introduce the image correlation map (ICM). Here, the single species regions easily can be identified in order to generate the necessary single species reference patterns. This avoids the otherwise cumbersome and artifact prone preparation and recording of additional reference samples. The power of the proposed imaging scheme persists in species separation quality at high speed shown for up to three species with established reference samples and dyes commonly used for cellular STED imaging.
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Affiliation(s)
- Mariano Gonzalez Pisfil
- PicoQuant Innovations GmbH, Rudower Chaussee 29, 12489 Berlin, Germany.,Department of Biology, Molecular Biophysics, IRI Life Sciences, Humboldt-Universität zu Berlin, Invalidenstrasse 42, 10115 Berlin, Germany
| | - Sumeet Rohilla
- PicoQuant Innovations GmbH, Rudower Chaussee 29, 12489 Berlin, Germany.,Department of Internal Medicine/Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany
| | - Marcelle König
- PicoQuant GmbH, Rudower Chaussee 29, 12489 Berlin, Germany
| | | | | | | | - Rainer Erdmann
- PicoQuant GmbH, Rudower Chaussee 29, 12489 Berlin, Germany
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Golcs Á, Ádám BÁ, Vezse P, Huszthy P, Tóth T. Synthesis and Spectrophotometric Studies of 9‐Substituted‐4,5‐dimethoxyacridine Multifunctionalizable Fluorescent Dyes and Their Macrocyclic Derivatives. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ádám Golcs
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
| | - Bálint Árpád Ádám
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
| | - Panna Vezse
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
| | - Péter Huszthy
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
| | - Tünde Tóth
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
- Institute for Energy Security and Environmental Safety Centre for Energy Research Konkoly-Thege Miklós út 29–33 1121 Budapest Hungary
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Heterocyclic Schiff Bases of 3-Aminobenzanthrone and Their Reduced Analogues: Synthesis, Properties and Spectroscopy. Molecules 2021; 26:molecules26092570. [PMID: 33924984 PMCID: PMC8125169 DOI: 10.3390/molecules26092570] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/21/2021] [Accepted: 04/26/2021] [Indexed: 12/25/2022] Open
Abstract
New substituted azomethines of benzanthrone with heterocyclic substituents were synthesized by condensation reaction of 3-aminobenzo[de]anthracen-7-one with appropriate aromatic aldehydes. The resulting imines were reduced with sodium borohydride to the corresponding amines, the luminescence of which is more pronounced in comparison with the initial azomethines. The novel benzanthrone derivatives were characterized by NMR, IR, MS, UV/Vis, and fluorescence spectroscopy. The structure of three dyes was studied by the X-ray single crystal structure analysis. The solvent effect on photophysical behaviors of synthesized imines and amines was investigated. The obtained compounds absorb at 420–525 nm, have relatively large Stokes shifts (up to 150 nm in ethanol), and emit at 500–660 nm. The results testify that emission of the studied compounds is sensitive to the solvent polarity, exhibiting negative fluorosolvatochromism for the synthesized azomethines and positive fluorosolvatochromism for the obtained amines. The results obtained indicate that the synthesized compounds are promising as luminescent dyes.
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Man Z, Cui H, Lv Z, Xu Z, Wu Z, Wu Y, Liao Q, Liu M, Xi P, Zheng L, Fu H. Organic Nanoparticles-Assisted Low-Power STED Nanoscopy. NANO LETTERS 2021; 21:3487-3494. [PMID: 33848175 DOI: 10.1021/acs.nanolett.1c00161] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Stimulated emission depletion (STED) nanoscopy plays a key role in achieving sub-50 nm high spatial resolution for subcellular live-cell imaging. To avoid re-excitation, the STED wavelength has to be tuned at the red tail of the emission spectrum of fluorescent probes, leading to high depletion laser power that might damage the cell viability and functionality. Herein, with the highly emissive silica-coated core-shell organic nanoparticles (CSONPs) enabling a giant Stokes shift of 150 nm, ultralow power STED is achieved by shifting the STED wavelength to the emission maximum at 660 nm. The stimulated emission cross section is increased by ∼20-fold compared to that at the emission red tail. The measured saturation intensity and lateral resolution of our CSONP are 0.0085 MW cm-2 and 25 nm, respectively. More importantly, long-term (>3 min) dynamic super-resolution imaging of the lysosomal fusion-fission processes in living cells is performed with a resolution of 37 nm.
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Affiliation(s)
- Zhongwei Man
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Capital Normal University, Beijing 100048, China
- Institute of Molecular Plus, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Hongtu Cui
- The Institute of Cardiovascular Sciences and Institute of Systems Biomedicine, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Sciences of Ministry of Education, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Health Science Center, Peking University, Beijing 100191, China
| | - Zheng Lv
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Capital Normal University, Beijing 100048, China
- Institute of Molecular Plus, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Zhenzhen Xu
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Capital Normal University, Beijing 100048, China
| | - Zhaoyang Wu
- Department of Biomedical Engineering, College of Future Technology, Peking University, Beijing 100871, China
| | - Yishi Wu
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Capital Normal University, Beijing 100048, China
| | - Qing Liao
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Capital Normal University, Beijing 100048, China
| | - Meihui Liu
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Capital Normal University, Beijing 100048, China
| | - Peng Xi
- Department of Biomedical Engineering, College of Future Technology, Peking University, Beijing 100871, China
| | - Lemin Zheng
- The Institute of Cardiovascular Sciences and Institute of Systems Biomedicine, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Sciences of Ministry of Education, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Health Science Center, Peking University, Beijing 100191, China
- China National Clinical Research Center for Neurological Diseases, Tiantan Hospital, Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing 100160, China
| | - Hongbing Fu
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Capital Normal University, Beijing 100048, China
- Institute of Molecular Plus, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
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Rubenina I, Gavarane I, Kirilova E, Mezaraupe L, Kirjusina M. Comparison of the Benzanthrone Luminophores: They Are Not Equal for Rapid Examination of Parafasciolopsis fasciolaemorpha (Trematoda: Digenea). Biomolecules 2021; 11:biom11040598. [PMID: 33919651 PMCID: PMC8073186 DOI: 10.3390/biom11040598] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 04/13/2021] [Accepted: 04/15/2021] [Indexed: 11/30/2022] Open
Abstract
Luminescent derivatives of benzanthrone are becoming more useful based on their light-absorbing and fluorescent-emitting properties. Our previous studies showed that luminescent staining properties of the same benzanthrone dye differ for variable parasite samples. Therefore, two types of benzanthrone dyes were prepared. One has a strongly basic amidine group and a halogen atom, and the other has an amide moiety and a tertiary amine group. Trematoda Parafasciolopsis fasciolaemorpha is a liver fluke of a moose (Alces alces) and has a significant influence on the health and abundance of the moose population. Staining protocols for parasite P. fasciolaemorpha specific organ or organ systems imaging are mostly time-consuming and labor-intensive. The study aimed to compare the fixation technique and the staining protocol by synthesized benzanthrone luminescent dyes to determine detailed morphology, anatomical arrangement of the organ systems and gross organization of the muscle layers of P. fasciolaemorpha using confocal laser scanning microscopy. Luminophores were tested for samples fixed in different fixatives. Developed dyes and staining protocol resulting in imaging of all parts of trematode without additional sample preparation procedures, which usually are required for parasite examination. Obtained results confirmed that the most qualitative results could be reached using 3-N-(2-piperidinylacetamido)benzanthrone dye which has amide moiety and a tertiary amine group. Based on obtained results, 3-N-(2-piperidinylacetamido)benzanthrone gave more qualitative parasite visualization than 2-bromo-3-N-(N′,N′-dimethylformamidino)benzanthrone.
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Mohd Yusof Chan NN, Idris A, Zainal Abidin ZH, Tajuddin HA, Abdullah Z. White light employing luminescent engineered large (mega) Stokes shift molecules: a review. RSC Adv 2021; 11:13409-13445. [PMID: 35423891 PMCID: PMC8697633 DOI: 10.1039/d1ra00129a] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 05/14/2021] [Accepted: 03/03/2021] [Indexed: 12/14/2022] Open
Abstract
Large (mega) Stokes shift molecules have shown great potential in white light emission for optoelectronic applications, such as flat panel display technology, light-emitting diodes, photosensitizers, molecular probes, cellular and bioimaging, and other applications. This review aims to summarize recent developments of white light generation that incorporate a large Stokes shift component, key approaches to designing large Stokes shift molecules, perspectives on future opportunities, and remaining challenges confronting this emerging research field. After a brief introduction of feasible pathways in generating white light, exemplifications of large Stokes shift molecules as white light candidates from organic and inorganic-based materials are illustrated. Various possible ways to design such molecules have been revealed by integrating the photophysical mechanisms that are essential to produce red-shifted emission upon photoexcitation, such as excited state intramolecular proton transfer (ESIPT), intramolecular charge transfer (ICT), excited state geometrical relaxation or structural deformation, aggregation-induced emission (AIE) alongside the different formations of aggregates, interplay between monomer and excimer emission, host-guest interaction, and lastly metal to ligand charge transfer (MLCT) via harvesting triplet state. Furthermore, previously reported fluorescent materials are described and categorized based on luminescence behaviors on account of the Stokes shifts value. This review will serve as a rationalized introduction and reference for researchers who are interested in exploring large or mega Stokes shift molecules, and will motivate new strategies along with instigation of persistent efforts in this prominent subject area with great avenues.
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Affiliation(s)
- Nadia Nabihah Mohd Yusof Chan
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
- Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
| | - Azila Idris
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
| | - Zul Hazrin Zainal Abidin
- Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
| | - Hairul Anuar Tajuddin
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
| | - Zanariah Abdullah
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
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