101
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Sugihara Y, Inai N, Taki M, Baumgartner T, Kawakami R, Saitou T, Imamura T, Yanai T, Yamaguchi S. Donor-acceptor-acceptor-type near-infrared fluorophores that contain dithienophosphole oxide and boryl groups: effect of the boryl group on the nonradiative decay. Chem Sci 2021; 12:6333-6341. [PMID: 34084431 PMCID: PMC8115064 DOI: 10.1039/d1sc00827g] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The use of donor-π-acceptor (D-π-A) skeletons is an effective strategy for the design of fluorophores with red-shifted emission. In particular, the use of amino and boryl moieties as the electron-donating and -accepting groups, respectively, can produce dyes that exhibit high fluorescence and solvatochromism. Herein, we introduce a dithienophosphole P-oxide scaffold as an acceptor-spacer to produce a boryl- and amino-substituted donor-acceptor-acceptor (D-A-A) π-system. The thus obtained fluorophores exhibit emission in the near-infrared (NIR) region, while maintaining high fluorescence quantum yields even in polar solvents (e.g. λ em = 704 nm and Φ F = 0.69 in CH3CN). A comparison of these compounds with their formyl- or cyano-substituted counterparts demonstrated the importance of the boryl group for generating intense emission. The differences among these electron-accepting substituents were examined in detail using theoretical calculations, which revealed the crucial role of the boryl group in lowering the nonradiative decay rate constant by decreasing the non-adiabatic coupling in the internal conversion process. The D-A-A framework was further fine-tuned to improve the photostability. One of these D-A-A dyes was successfully used in bioimaging to visualize the blood vessels of Japanese medaka larvae and mouse brain.
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Affiliation(s)
- Yoshiaki Sugihara
- Department of Chemistry, Graduate School of Science, Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University Furo, Chikusa Nagoya 464-8602 Japan
| | - Naoto Inai
- Department of Chemistry, Graduate School of Science, Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University Furo, Chikusa Nagoya 464-8602 Japan
| | - Masayasu Taki
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University Furo, Chikusa Nagoya 464-8602 Japan
| | - Thomas Baumgartner
- Department of Chemistry, York University 4700 Keele St. Toronto ON M3J 1P3 Canada
| | - Ryosuke Kawakami
- Department of Molecular Medicine for Pathogenesis, Graduate School of Medicine, Ehime University Shitsukawa Toon City Ehime 791-0295 Japan
| | - Takashi Saitou
- Department of Molecular Medicine for Pathogenesis, Graduate School of Medicine, Ehime University Shitsukawa Toon City Ehime 791-0295 Japan
| | - Takeshi Imamura
- Department of Molecular Medicine for Pathogenesis, Graduate School of Medicine, Ehime University Shitsukawa Toon City Ehime 791-0295 Japan
| | - Takeshi Yanai
- Department of Chemistry, Graduate School of Science, Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University Furo, Chikusa Nagoya 464-8602 Japan .,Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University Furo, Chikusa Nagoya 464-8602 Japan
| | - Shigehiro Yamaguchi
- Department of Chemistry, Graduate School of Science, Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University Furo, Chikusa Nagoya 464-8602 Japan .,Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University Furo, Chikusa Nagoya 464-8602 Japan
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102
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Jörg M, Madden KS. The right tools for the job: the central role for next generation chemical probes and chemistry-based target deconvolution methods in phenotypic drug discovery. RSC Med Chem 2021; 12:646-665. [PMID: 34124668 PMCID: PMC8152813 DOI: 10.1039/d1md00022e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 03/15/2021] [Indexed: 12/15/2022] Open
Abstract
The reconnection of the scientific community with phenotypic drug discovery has created exciting new possibilities to develop therapies for diseases with highly complex biology. It promises to revolutionise fields such as neurodegenerative disease and regenerative medicine, where the development of new drugs has consistently proved elusive. Arguably, the greatest challenge in readopting the phenotypic drug discovery approach exists in establishing a crucial chain of translatability between phenotype and benefit to patients in the clinic. This remains a key stumbling block for the field which needs to be overcome in order to fully realise the potential of phenotypic drug discovery. Excellent quality chemical probes and chemistry-based target deconvolution techniques will be a crucial part of this process. In this review, we discuss the current capabilities of chemical probes and chemistry-based target deconvolution methods and evaluate the next advances necessary in order to fully support phenotypic screening approaches in drug discovery.
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Affiliation(s)
- Manuela Jörg
- School of Natural and Environmental Sciences, Newcastle University Bedson Building Newcastle upon Tyne NE1 7RU UK
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University Parkville Victoria 3052 Australia
| | - Katrina S Madden
- School of Natural and Environmental Sciences, Newcastle University Bedson Building Newcastle upon Tyne NE1 7RU UK
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University Parkville Victoria 3052 Australia
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103
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Chen J, Fateminia SMA, Kacenauskaite L, Bærentsen N, Grønfeldt Stenspil S, Bredehoeft J, Martinez KL, Flood AH, Laursen BW. Ultrabright Fluorescent Organic Nanoparticles Based on Small‐Molecule Ionic Isolation Lattices**. Angew Chem Int Ed Engl 2021; 60:9450-9458. [DOI: 10.1002/anie.202100950] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/02/2021] [Indexed: 12/20/2022]
Affiliation(s)
- Junsheng Chen
- Nano-Science Center & Department of Chemistry University of Copenhagen Universitetsparken 5 2100 København Ø Denmark
| | - S. M. Ali Fateminia
- Nano-Science Center & Department of Chemistry University of Copenhagen Universitetsparken 5 2100 København Ø Denmark
| | - Laura Kacenauskaite
- Nano-Science Center & Department of Chemistry University of Copenhagen Universitetsparken 5 2100 København Ø Denmark
| | - Nicolai Bærentsen
- Nano-Science Center & Department of Chemistry University of Copenhagen Universitetsparken 5 2100 København Ø Denmark
| | - Stine Grønfeldt Stenspil
- Nano-Science Center & Department of Chemistry University of Copenhagen Universitetsparken 5 2100 København Ø Denmark
| | - Jona Bredehoeft
- Nano-Science Center & Department of Chemistry University of Copenhagen Universitetsparken 5 2100 København Ø Denmark
| | - Karen L. Martinez
- Nano-Science Center & Department of Chemistry University of Copenhagen Universitetsparken 5 2100 København Ø Denmark
| | - Amar H. Flood
- Molecular Materials Design Lab Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
| | - Bo W. Laursen
- Nano-Science Center & Department of Chemistry University of Copenhagen Universitetsparken 5 2100 København Ø Denmark
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104
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Responsive small-molecule luminescence probes for sulfite/bisulfite detection in food samples. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116199] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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105
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Lv L, Luo W, Diao Q. A novel ratiometric fluorescent probe for selective detection and imaging of H 2S. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 246:118959. [PMID: 32987270 DOI: 10.1016/j.saa.2020.118959] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/12/2020] [Accepted: 09/13/2020] [Indexed: 06/11/2023]
Abstract
In this work, a novel phenoxazine-based fluorescent probe BPO-N3 was developed to detect H2S. The results showed that the probe had high selectivity and sensitivity toward H2S, and its detection mechanism was based the ratio between green and red fluorescence signals; its detection limit was as low as 30 nM. The fluorescent imaging experiments further showed that the probe BPO-N3 could successfully detect endogenous and exogenous H2S in living cells. This probe can be used as a powerful tool for in-depth study of H2S function in various physiological processes.
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Affiliation(s)
- Linlin Lv
- School of Chemistry and Life Science, Anshan Normal University, Ping'an Street 43, Anshan 114005, China
| | - Weiwei Luo
- School of Chemistry and Life Science, Anshan Normal University, Ping'an Street 43, Anshan 114005, China
| | - Quanping Diao
- School of Chemistry and Life Science, Anshan Normal University, Ping'an Street 43, Anshan 114005, China.
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106
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Imaging Viral Infection by Fluorescence Microscopy: Focus on HIV-1 Early Stage. Viruses 2021; 13:v13020213. [PMID: 33573241 PMCID: PMC7911428 DOI: 10.3390/v13020213] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/28/2021] [Accepted: 01/28/2021] [Indexed: 12/15/2022] Open
Abstract
During the last two decades, progresses in bioimaging and the development of various strategies to fluorescently label the viral components opened a wide range of possibilities to visualize the early phase of Human Immunodeficiency Virus 1 (HIV-1) life cycle directly in infected cells. After fusion of the viral envelope with the cell membrane, the viral core is released into the cytoplasm and the viral RNA (vRNA) is retro-transcribed into DNA by the reverse transcriptase. During this process, the RNA-based viral complex transforms into a pre-integration complex (PIC), composed of the viral genomic DNA (vDNA) coated with viral and host cellular proteins. The protective capsid shell disassembles during a process called uncoating. The viral genome is transported into the cell nucleus and integrates into the host cell chromatin. Unlike biochemical approaches that provide global data about the whole population of viral particles, imaging techniques enable following individual viruses on a single particle level. In this context, quantitative microscopy has brought original data shedding light on the dynamics of the viral entry into the host cell, the cytoplasmic transport, the nuclear import, and the selection of the integration site. In parallel, multi-color imaging studies have elucidated the mechanism of action of host cell factors implicated in HIV-1 viral cycle progression. In this review, we describe the labeling strategies used for HIV-1 fluorescence imaging and report on the main advancements that imaging studies have brought in the understanding of the infection mechanisms from the viral entry into the host cell until the provirus integration step.
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107
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Younes EA, Issa MJ, Abdollahi MF, Ding YF, Rasras AJ, Mok GSP, Lin JB, Zhao Y. Studies of cyanomethylcarbamoyl-bridged anthracene and pyrene fluorophores. NEW J CHEM 2021. [DOI: 10.1039/d1nj03044b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyanomethylcarbamoyl-bridged anthracene and pyrene derivatives were prepared as functional fluorophores with diverse structural, electronic, and fluorescence properties.
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Affiliation(s)
- Eyad A. Younes
- Department of Chemistry, Faculty of Science, The Hashemite University, P.O. Box 330127, Zarqa 13133, Jordan
| | - Maram J. Issa
- Department of Chemistry, Faculty of Science, The Hashemite University, P.O. Box 330127, Zarqa 13133, Jordan
| | - Maryam F. Abdollahi
- Department of Chemistry, Memorial University of Newfoundland, St. John's, NL A1B 3X7, Canada
| | - Yuan-Fu Ding
- Biomedical Imaging Laboratory (BIG), Department of Electrical and Computer Engineering, University of Macau, Taipa, Macau SAR, China
| | - Anas J. Rasras
- Faculty of Science, Department of Chemistry, Al-Balqa Applied University, Al-Salt, Jordan
| | - Greta S. P. Mok
- Biomedical Imaging Laboratory (BIG), Department of Electrical and Computer Engineering, University of Macau, Taipa, Macau SAR, China
| | - Jian-Bin Lin
- C-CART, CREAIT Network, Memorial University of Newfoundland, St. John's, Newfoundland and Labrador, Canada
| | - Yuming Zhao
- Department of Chemistry, Memorial University of Newfoundland, St. John's, NL A1B 3X7, Canada
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108
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Vineetha PK, Krishnan A, Aswathy A, Chandrasekaran PO, Manoj N. Pyran based bipodal D–π–A systems: colorimetric and ratiometric sensing of mercury – experimental and theoretical approach. NEW J CHEM 2021. [DOI: 10.1039/d1nj01167g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reversible and selective Hg2+ ion complexation of the two pyran based colorimetric and fluorescent ratiometric probes.
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Affiliation(s)
- Pookalavan Karicherry Vineetha
- Department of Applied Chemistry, Centre of Excellence in Advanced Materials and Inter-University Centre for Nanomaterials and Devices, CUSAT, Kochi – 682022, Kerala, India
| | - Aravind Krishnan
- Department of Chemistry, St.Berchman's College, Changanassery – 686101, Kerala, India
| | - Ajayakumar Aswathy
- Department of Applied Chemistry, Centre of Excellence in Advanced Materials and Inter-University Centre for Nanomaterials and Devices, CUSAT, Kochi – 682022, Kerala, India
| | - Parvathy O. Chandrasekaran
- Department of Applied Chemistry, Centre of Excellence in Advanced Materials and Inter-University Centre for Nanomaterials and Devices, CUSAT, Kochi – 682022, Kerala, India
| | - Narayanapillai Manoj
- Department of Applied Chemistry, Centre of Excellence in Advanced Materials and Inter-University Centre for Nanomaterials and Devices, CUSAT, Kochi – 682022, Kerala, India
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109
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Yu QQ, Gao JJ, Lang XX, Li HY, Wang MQ. Microenvironment-Sensitive Fluorescent Ligand Binds Ascaris Telomere Antiparallel G-Quadruplex DNA with Blue-Shift and Enhanced Emission. Chembiochem 2020; 22:1042-1048. [PMID: 33140570 DOI: 10.1002/cbic.202000671] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/02/2020] [Indexed: 11/10/2022]
Abstract
The development of small molecules that can selectively target G-quadruplex (G4) DNAs has drawn considerable attention due to their unique physiological and pathological functions. However, only a few molecules have been found to selectively bind a particular G4 DNA structure. We have developed a fluorescence ligand Q1, a molecular scaffold with a carbazole-pyridine core bridged by a phenylboronic acid side chain, that acts as a selective ascaris telomere antiparallel G4 DNA ASC20 ligand with about 18 nm blue-shifted and enhanced fluorescence intensity. Photophysical properties revealed that Q1 was sensitive to the microenvironment and gave the best selectivity to ASC20 with an equilibrium binding constant Ka =6.04×105 M-1 . Time-resolved fluorescence studies also demonstrated that Q1 showed a longer fluorescence lifetime in the presence of ASC20. The binding characteristics of Q1 with ASC20 were shown in detail in a fluorescent intercalator displacement (FID) assay, a 2-Ap titration experiment and by molecular docking. Ligand Q1 could adopt an appropriate pose at terminal G-quartets of ASC20 through multiple interactions including π-π stacking between aromatic rings; this led to strong fluorescence enhancement. In addition, a co-staining image showed that Q1 is mainly distributed in the cytoplasm. Accordingly, this work provides insights for the development of ligands that selectively targeting a specific G4 DNA structure.
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Affiliation(s)
- Quan-Qi Yu
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Juan-Juan Gao
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Xue-Xian Lang
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Hong-Yao Li
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Ming-Qi Wang
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, P. R. China
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110
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Fang L, Watkinson M. Subcellular localised small molecule fluorescent probes to image mobile Zn 2. Chem Sci 2020; 11:11366-11379. [PMID: 34094379 PMCID: PMC8162803 DOI: 10.1039/d0sc04568c] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 10/07/2020] [Indexed: 12/26/2022] Open
Abstract
Zn2+, as the second most abundant d-block metal in the human body, plays an important role in a wide range of biological processes, and the dysfunction of its homeostasis is related to many diseases, including Type 2 diabetes, Alzheimer's disease and prostate and breast cancers. Small molecule fluorescent probes, as effective tools for real-time imaging, have been widely used to study Zn2+ related processes. However, the failure to control their localisation in cells has limited their utility somewhat, as they are generally incapable of studying individual processes in a specific cellular location. This perspective presents an overview of the recent developments in specific organelle localised small molecule fluorescent Zn2+ probes and their application in biological milieu, which could help to extend our understanding of the mechanisms that cells use to respond to dysfunction of zinc homeostasis and its roles in disease initiation and development.
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Affiliation(s)
- Le Fang
- The Joseph Priestley Building, School of Biological and Chemical Science, Queen Mary University of London Mile End Road London E1 4NS UK
| | - Michael Watkinson
- The Lennard-Jones Laboratories, School of Chemical and Physical Science, Keele University ST5 5BG UK
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