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Sangsuwan W, Faikhruea K, Supabowornsathit K, Sangsopon D, Ingrungruanglert P, Chuntakaruk H, Nuntavanotayan N, Nakprasit K, Israsena N, Rungrotmongkol T, Chuawong P, Vilaivan T, Aonbangkhen C. Design, Synthesis, and Characterization of Novel Styryl Dyes as Fluorescent Probes for Tau Aggregate Detection in Vitro and in Cells. Chem Asian J 2024:e202301081. [PMID: 38377056 DOI: 10.1002/asia.202301081] [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: 11/30/2023] [Revised: 02/14/2024] [Accepted: 02/19/2024] [Indexed: 02/22/2024]
Abstract
A series of novel styryl dye derivatives incorporating indolium and quinolinium core structures were successfully synthesized to explore their interacting and binding capabilities with tau aggregates in vitro and in cells. The synthesized dyes exhibited enhanced fluorescence emission in viscous environments due to the rotatable bond confinement in the core structure. Dye 4, containing a quinolinium moeity and featuring two cationic sites, demonstrated a 28-fold increase in fluorescence emission upon binding to tau aggregates. This dye could also stain tau aggregates in living cells, confirmed by cell imaging using confocal fluorescence microscopy. A molecular docking study was conducted to provide additional visualization and support for binding interactions. This work offers novel and non-cytotoxic fluorescent probes with desirable photophysical properties, which could potentially be used for studying tau aggregates in living cells, prompting further development of new fluorescent probes for early Alzheimer's disease detection.
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Affiliation(s)
- Withsakorn Sangsuwan
- Center of Excellence in Natural Products Chemistry (CENP), Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
- Department of Chemistry and, Center of Excellence for Innovation in Chemistry, Faculty of Science, Special Research Unit for Advanced Magnetic Resonance (AMR), Kasetsart University, Bangkok, 10900, Thailand
| | - Kriangsak Faikhruea
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Kotchakorn Supabowornsathit
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Don Sangsopon
- Center of Excellence in Natural Products Chemistry (CENP), Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Praewphan Ingrungruanglert
- Stem Cell and Cell Therapy Research Unit and Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Hathaichanok Chuntakaruk
- Program in Bioinformatics and Computational Biology, Graduate School, Chulalongkorn University, Bangkok, 10330, Thailand
- Center of Excellence in Structural and Computational Biology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Napatsaporn Nuntavanotayan
- Department of Chemistry and, Center of Excellence for Innovation in Chemistry, Faculty of Science, Special Research Unit for Advanced Magnetic Resonance (AMR), Kasetsart University, Bangkok, 10900, Thailand
| | - Kittiporn Nakprasit
- Center of Excellence in Natural Products Chemistry (CENP), Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Nipan Israsena
- Stem Cell and Cell Therapy Research Unit and Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thanyada Rungrotmongkol
- Program in Bioinformatics and Computational Biology, Graduate School, Chulalongkorn University, Bangkok, 10330, Thailand
- Center of Excellence in Structural and Computational Biology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Pitak Chuawong
- Department of Chemistry and, Center of Excellence for Innovation in Chemistry, Faculty of Science, Special Research Unit for Advanced Magnetic Resonance (AMR), Kasetsart University, Bangkok, 10900, Thailand
| | - Tirayut Vilaivan
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Chanat Aonbangkhen
- Center of Excellence in Natural Products Chemistry (CENP), Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
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Chisholm TS, Hunter CA. A closer look at amyloid ligands, and what they tell us about protein aggregates. Chem Soc Rev 2024; 53:1354-1374. [PMID: 38116736 DOI: 10.1039/d3cs00518f] [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: 12/21/2023]
Abstract
The accumulation of amyloid fibrils is characteristic of neurodegenerative diseases such as Alzheimer's disease (AD) and Parkinson's disease. Detecting these fibrils with fluorescent or radiolabelled ligands is one strategy for diagnosing and better understanding these diseases. A vast number of amyloid-binding ligands have been reported in the literature as a result. To obtain a better understanding of how amyloid ligands bind, we have compiled a database of 3457 experimental dissociation constants for 2076 unique amyloid-binding ligands. These ligands target Aβ, tau, or αSyn fibrils, as well as relevant biological samples including AD brain homogenates. From this database significant variation in the reported dissociation constants of ligands was found, possibly due to differences in the morphology of the fibrils being studied. Ligands were also found to bind to Aβ(1-40) and Aβ(1-42) fibrils with similar affinities, whereas a greater difference was found for binding to Aβ and tau or αSyn fibrils. Next, the binding of ligands to fibrils was shown to be largely limited by the hydrophobic effect. Some Aβ ligands do not fit into this hydrophobicity-limited model, suggesting that polar interactions can play an important role when binding to this target. Finally several binding site models were outlined for amyloid fibrils that describe what ligands target what binding sites. These models provide a foundation for interpreting and designing site-specific binding assays.
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Affiliation(s)
- Timothy S Chisholm
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1 EW, UK.
| | - Christopher A Hunter
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1 EW, UK.
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3
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Ghosh R, Debnath S, Bhattacharya A, Chatterjee PB. Affinity Studies of Hemicyanine Derived Water Soluble Colorimetric Probes with Reactive Oxygen/Nitrogen/Sulfur Species. Chembiochem 2023; 24:e202200541. [PMID: 36598026 DOI: 10.1002/cbic.202200541] [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: 09/15/2022] [Revised: 12/01/2022] [Accepted: 01/04/2023] [Indexed: 01/05/2023]
Abstract
Peroxynitrite (ONOO- ) is an essential endogenous reactive oxygen species (ROS) generated in mitochondria under various pathological and physiological conditions. An increase in its level in mitochondria is related to numerous diseases. Herein, we report a series of hemicyanine-derived water-soluble colorimetric probes (1-4) and the reactivity of which was studied with various reactive oxygen, nitrogen, and sulfur species. Probes 1-4 are formed by conjugating 1,2,3,3-tetramethyl-3H-indolium iodide and 4-hydroxybenzaldehyde or its derivatives through an alkene linkage formed by the Knoevenagel reaction. Oxidative cleavage of the electron-rich double bond of the conjugated hemicyanine dye revealed a discerning affinity of probe 3 towards peroxynitrite among all reactive oxygen species. The rapid change in color of 3 provides a sensitive and selective method for detecting peroxynitrite with a low detection limit of 180 nM. Notably, the water solubility of the probe displays excellent performance for the selective detection of peroxynitrite among ROS and reactive nitrogen (RNS)/sulfur species (RSS). UV-vis, 1 H NMR, and 13 C NMR spectroscopic data and results from theoretical calculations provide further information on the interaction of peroxynitrite with probe 3.
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Affiliation(s)
- Riya Ghosh
- Analytical & Environmental Science Division and Centralized Instrument Facility, CSIR-CSMCRI, G. B. Marg, Bhavnagar, Gujarat, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Snehasish Debnath
- Analytical & Environmental Science Division and Centralized Instrument Facility, CSIR-CSMCRI, G. B. Marg, Bhavnagar, Gujarat, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Arnab Bhattacharya
- Analytical & Environmental Science Division and Centralized Instrument Facility, CSIR-CSMCRI, G. B. Marg, Bhavnagar, Gujarat, India
| | - Pabitra B Chatterjee
- Analytical & Environmental Science Division and Centralized Instrument Facility, CSIR-CSMCRI, G. B. Marg, Bhavnagar, Gujarat, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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4
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Wang BD, Wei R, Gao MJ, Wang YH, Zhang CF, Guo XH, Liang ZS, Zhou JT, Sun JX, Xu JQ, Kang YF. Development of peroxynitrite-responsive fluorescence probe for recognition of drug-induced liver injury. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 283:121755. [PMID: 35985230 DOI: 10.1016/j.saa.2022.121755] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 06/26/2022] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
Peroxynitrite (ONOO-) as an active substance, is produced during normal physiological process, which plays an important role in maintaining cell REDOX balance and cell function. Moreover, the peroxynitrite is involved in many diseases and especially can be used as a biomarker of drug-induced liver injury (DILI). Therefore, in this work, we synthesized a fluorescent probe JQ-3 for detecting ONOO-. The results showed the probe JQ-3 possessed excellent selectivity, fast response time (10 min) and low detection limit (32 nM). The probe JQ-3 is almost unaffected by pH, showing the potential application in biological systems. Moreover, the probe JQ-3 can be successfully used for the detection of exogenous and endogenous ONOO- in living cells and zebrafish. At the same time, the DILI was successfully recognized by visualizing ONOO- with JQ-3 in living cells and zebrafish. Therefore, the probe JQ-3 provides a potential tool for detecting ONOO- to understand physiological and pathology processes of disease.
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Affiliation(s)
- Bing-Dan Wang
- College of Laboratory Medicine, Hebei Key Laboratory of Quality & Safety Analysis-Testing for Agro-Products and Food, and Zhang Jiakou Key Laboratory of Organic Light Functional Materials, Hebei North University, Zhangjiakou 075000, Hebei Province, China
| | - Ran Wei
- College of Laboratory Medicine, Hebei Key Laboratory of Quality & Safety Analysis-Testing for Agro-Products and Food, and Zhang Jiakou Key Laboratory of Organic Light Functional Materials, Hebei North University, Zhangjiakou 075000, Hebei Province, China
| | - Meng-Jiao Gao
- College of Laboratory Medicine, Hebei Key Laboratory of Quality & Safety Analysis-Testing for Agro-Products and Food, and Zhang Jiakou Key Laboratory of Organic Light Functional Materials, Hebei North University, Zhangjiakou 075000, Hebei Province, China
| | - Yi-Hua Wang
- College of Chemical Engineering, Lanzhou University of Arts and Sciences, Lanzhou 730010, China
| | - Chu-Fan Zhang
- College of Laboratory Medicine, Hebei Key Laboratory of Quality & Safety Analysis-Testing for Agro-Products and Food, and Zhang Jiakou Key Laboratory of Organic Light Functional Materials, Hebei North University, Zhangjiakou 075000, Hebei Province, China
| | - Xiao-Han Guo
- College of Laboratory Medicine, Hebei Key Laboratory of Quality & Safety Analysis-Testing for Agro-Products and Food, and Zhang Jiakou Key Laboratory of Organic Light Functional Materials, Hebei North University, Zhangjiakou 075000, Hebei Province, China
| | - Zi-Shan Liang
- College of Laboratory Medicine, Hebei Key Laboratory of Quality & Safety Analysis-Testing for Agro-Products and Food, and Zhang Jiakou Key Laboratory of Organic Light Functional Materials, Hebei North University, Zhangjiakou 075000, Hebei Province, China
| | - Jia-Tong Zhou
- College of Laboratory Medicine, Hebei Key Laboratory of Quality & Safety Analysis-Testing for Agro-Products and Food, and Zhang Jiakou Key Laboratory of Organic Light Functional Materials, Hebei North University, Zhangjiakou 075000, Hebei Province, China
| | - Jia-Xing Sun
- College of Laboratory Medicine, Hebei Key Laboratory of Quality & Safety Analysis-Testing for Agro-Products and Food, and Zhang Jiakou Key Laboratory of Organic Light Functional Materials, Hebei North University, Zhangjiakou 075000, Hebei Province, China
| | - Jia-Qi Xu
- College of Laboratory Medicine, Hebei Key Laboratory of Quality & Safety Analysis-Testing for Agro-Products and Food, and Zhang Jiakou Key Laboratory of Organic Light Functional Materials, Hebei North University, Zhangjiakou 075000, Hebei Province, China.
| | - Yan-Fei Kang
- College of Laboratory Medicine, Hebei Key Laboratory of Quality & Safety Analysis-Testing for Agro-Products and Food, and Zhang Jiakou Key Laboratory of Organic Light Functional Materials, Hebei North University, Zhangjiakou 075000, Hebei Province, China.
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5
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A Novel Fluorescent Probe for the Detection of Cyanide Ions in Solutions and Studies on Its Biophysical Interactions with ctDNA and Proteases. J Fluoresc 2022; 32:2173-2188. [PMID: 35972711 DOI: 10.1007/s10895-022-03014-0] [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: 07/01/2022] [Accepted: 08/04/2022] [Indexed: 10/15/2022]
Abstract
A new cationic indolium based styryl dye (Ci) as a fluorescent probe was synthesized and its anions selectivity/sensitivity properties/molecular interactions with protease enzymes (pepsin/trypsin) and ctDNA has been studied by spectroscopic and computational methods. The fluorescence measurements at different temperatures indicated that quenching mechanism of enzymes by Ci was static. ΔH and ΔS data pointed out electrostatic/hydrophobic interactions with pepsin, and also hydrogen bonds/van der Waals forces with trypsin of Ci. According to Förster's non-radiative energy transfer, binding distances (r) were calculated as 3.53/3.27 nm for pepsin/trypsin. It was also investigated that groove binding is effective in interaction with ctDNA. The results were supported with molecular docking analyzes which have same tendency. Ci has been demonstrated hypsochromic effect with a decrease in polarity of solvents and it showed highly selective colorimetric and fluorometric sensing behavior for cyanide in organic solvent and in aqueous solution. 1H NMR titration was performed to examine the interaction mechanism between Ci and cyanide. The LOD values of cyanide ion were reported as 4.87 × 10-9 M and 9.70 × 10-7 M in DMSO and DMSO/H2O binary mixture, respectively. In addition, sensitivity of Ci as a chemosensor to cyanide was investigated in bitter almond samples.
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Rai H, Gupta S, Kumar S, Yang J, Singh SK, Ran C, Modi G. Near-Infrared Fluorescent Probes as Imaging and Theranostic Modalities for Amyloid-Beta and Tau Aggregates in Alzheimer's Disease. J Med Chem 2022; 65:8550-8595. [PMID: 35759679 DOI: 10.1021/acs.jmedchem.1c01619] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A person suspected of having Alzheimer's disease (AD) is clinically diagnosed for the presence of principal biomarkers, especially misfolded amyloid-beta (Aβ) and tau proteins in the brain regions. Existing radiotracer diagnostic tools, such as PET imaging, are expensive and have limited availability for primary patient screening and pre-clinical animal studies. To change the status quo, small-molecular near-infrared (NIR) probes have been rapidly developed, which may serve as an inexpensive, handy imaging tool to comprehend the dynamics of pathogenic progression in AD and assess therapeutic efficacy in vivo. This Perspective summarizes the biochemistry of Aβ and tau proteins and then focuses on structurally diverse NIR probes with coverages of their spectroscopic properties, binding affinity toward Aβ and tau species, and theranostic effectiveness. With the summarized information and perspective discussions, we hope that this paper may serve as a guiding tool for designing novel in vivo imaging fluoroprobes with theranostic capabilities in the future.
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Affiliation(s)
- Himanshu Rai
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi, U.P.-221005, India
| | - Sarika Gupta
- Molecular Science Laboratory, National Institute of Immunology, New Delhi-110067, India
| | - Saroj Kumar
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi-110029, India
| | - Jian Yang
- School of Medicine, Shanghai University, Shanghai 200444, China
| | - Sushil K Singh
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi, U.P.-221005, India
| | - Chongzhao Ran
- Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, United States
| | - Gyan Modi
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi, U.P.-221005, India
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7
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Gaur P, Galkin M, Kurochka A, Ghosh S, Yushchenko DA, Shvadchak VV. Fluorescent Probe for Selective Imaging of α-Synuclein Fibrils in Living Cells. ACS Chem Neurosci 2021; 12:1293-1298. [PMID: 33819025 DOI: 10.1021/acschemneuro.1c00090] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Plaques of amyloid fibrils composed of neuronal protein α-synuclein are one of the hallmarks of Parkinson's disease, and their selective imaging is crucial to study the mechanism of its pathogenesis. However, the existing fluorescent probes for amyloids are efficient only in solution and tissue systems, and they are not selective enough for the visualization of amyloid fibrils in living cells. In this study, we present two molecular rotor-based probes RB1 and RB2. These thiazolium probes show affinity to α-synuclein fibrils and turn-on fluorescence response upon interactions. Because of its extended π-conjugation and high rotational degree of freedom, RB1 exhibits a 76 nm red-shift of absorption maxima and 112-fold fluorescence enhancement upon binding to amyloid fibrils. Owing to its strong binding affinity to α-synuclein fibrils, RB1 can selectively stain them in the cytoplasm of living HeLa and SH-SY5Y cells with high optical contrast. RB1 is a cell-permeable and noncytotoxic probe. Taken together, we have demonstrated that RB1 is an amyloid probe with an outstanding absorption red-shift that can be used for intracellular imaging of α-synuclein fibrils.
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Affiliation(s)
- Pankaj Gaur
- Laboratory of Chemical Biology, The Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo namesti 2, Prague 6, 16610, Czech Republic
| | - Maksym Galkin
- Laboratory of Chemical Biology, The Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo namesti 2, Prague 6, 16610, Czech Republic
- Department of Biochemistry, Faculty of Science, Charles University, Albertov 6, Prague, 12843, Czech Republic
| | - Andrii Kurochka
- Laboratory of Chemical Biology, The Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo namesti 2, Prague 6, 16610, Czech Republic
| | - Subrata Ghosh
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh 175005, India
| | - Dmytro A. Yushchenko
- Laboratory of Chemical Biology, The Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo namesti 2, Prague 6, 16610, Czech Republic
| | - Volodymyr V. Shvadchak
- Laboratory of Chemical Biology, The Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo namesti 2, Prague 6, 16610, Czech Republic
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8
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Zhang Y, Yang M, Jia C, Ji M. Iodine-Promoted Domino Oxidative Cyclization for the One-Pot Synthesis of Novel Fused Four-Ring Quinoxaline Fluorophores by sp 3 C-H Functionalization. Chemistry 2019; 25:13709-13713. [PMID: 31498477 DOI: 10.1002/chem.201903688] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/05/2019] [Indexed: 02/02/2023]
Abstract
A method for the synthesis of novel fused four-ring quinoxaline skeleton has been described by an I2 promoted sp3 C-H functionalization between 1,2,3,3-tetramethyl-3H-indolium iodides and 1,2-diamines. This transformation proceeds smoothly under metal- and peroxide-free conditions through a sequential iodination, oxidation, annulation and rearrangement. Moreover, 8,9-dichloro-5,12,12-trimethyl-2-(trifluoromethyl)-5,12-dihydroquinolino[2,3-b]quinoxaline showed good photophysical properties and was used in live cell imaging, indicating the potential value of this skeleton as a fluorophore in probes.
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Affiliation(s)
- Yong Zhang
- School of Biological Science and Medical Engineering, Southeast University, Dingjiaqiao 87, 210009, Nanjing, P. R. China
| | - Min Yang
- School of Biological Science and Medical Engineering, Southeast University, Dingjiaqiao 87, 210009, Nanjing, P. R. China
| | - Chengli Jia
- School of Biological Science and Medical Engineering, Southeast University, Dingjiaqiao 87, 210009, Nanjing, P. R. China
| | - Min Ji
- School of Biological Science and Medical Engineering, Southeast University, Dingjiaqiao 87, 210009, Nanjing, P. R. China
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9
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Burdette MK, Jenkins R, Bandera YP, Jones H, Foulger IK, Dickey A, Nieminen AL, Foulger SH. Click-Engineered, Bioresponsive, and Versatile Particle-Protein-Dye System. ACS APPLIED BIO MATERIALS 2019; 2:3183-3193. [PMID: 31844845 PMCID: PMC6913539 DOI: 10.1021/acsabm.9b00025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We present a multifunctional polymer based nanoparticle platform for personalized nanotheranostic applications, which include photodynamic therapy and active targeting. In this system, poly(propargyl acrylate) (PA) particles were surface-modified with organic ligands and fluorophores (the payload) through an environmentally-sensitive linker. An azide modified bovine serum albumin (azBSA) was employed as the linker. This system prevents opsonization and, upon digestion, releases the payload. Attachment of the emitting payload to the particle through azide-modified bovine serum albumin (BSA) quenches emission, which can be again activated with digestion of the azBSA. The emission "turn-on" at a specific location will increase the signal-to-noise ratio. By utilizing human head and neck squamous carcinoma cells (UMSCC22A), photodynamic therapy studies with these particles gave promising reductions in cell growth. Additionally, the particle-protein-dye system is versatile as different fluorophores (such as silicon phthalocyanine or cyanine 3) can be attached to the protein and the same activation/deactivation behavior is observed. Active targeting can be employed to enhance the concentration of the payload in the designated tumor. Human lung carcinoma cells (A549) were utilized in toxicity studies where PA-azBSA particles were modified with a Survivin targeting ligand and indicated an enhanced cell death with the modified particles relative to the "free" Survivin targeting ligand.
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Affiliation(s)
- Mary K. Burdette
- Department of Materials Science and Engineering, Advanced Materials Research Laboratories, Clemson University, Anderson, South Carolina 29625, United States
- Center for Optical Materials Science and Engineering Technologies, Advanced Materials Research Laboratories, Clemson University, Anderson, South Carolina 29625, United States
| | - Ragini Jenkins
- Department of Materials Science and Engineering, Advanced Materials Research Laboratories, Clemson University, Anderson, South Carolina 29625, United States
- Center for Optical Materials Science and Engineering Technologies, Advanced Materials Research Laboratories, Clemson University, Anderson, South Carolina 29625, United States
| | - Yuriy P. Bandera
- Department of Materials Science and Engineering, Advanced Materials Research Laboratories, Clemson University, Anderson, South Carolina 29625, United States
- Center for Optical Materials Science and Engineering Technologies, Advanced Materials Research Laboratories, Clemson University, Anderson, South Carolina 29625, United States
| | - Haley Jones
- Department of Materials Science and Engineering, Advanced Materials Research Laboratories, Clemson University, Anderson, South Carolina 29625, United States
- Center for Optical Materials Science and Engineering Technologies, Advanced Materials Research Laboratories, Clemson University, Anderson, South Carolina 29625, United States
| | - Isabell K. Foulger
- Center for Optical Materials Science and Engineering Technologies, Advanced Materials Research Laboratories, Clemson University, Anderson, South Carolina 29625, United States
- Department of Bioengineering, Clemson University, Clemson, South Carolina 29634, United States
| | - Ashley Dickey
- Center for Optical Materials Science and Engineering Technologies, Advanced Materials Research Laboratories, Clemson University, Anderson, South Carolina 29625, United States
- Department of Chemistry, Advanced Materials Research Laboratories, Clemson University, Anderson, South Carolina 29625, United States
| | - Anna-Liisa Nieminen
- Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, South Carolina 29425, United States
| | - Stephen H. Foulger
- Department of Materials Science and Engineering, Advanced Materials Research Laboratories, Clemson University, Anderson, South Carolina 29625, United States
- Center for Optical Materials Science and Engineering Technologies, Advanced Materials Research Laboratories, Clemson University, Anderson, South Carolina 29625, United States
- Department of Bioengineering, Clemson University, Clemson, South Carolina 29634, United States
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10
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Perry A. New mechanism, new chromophore: investigating the electrophilic behaviour of styrylindolium dyes. Org Biomol Chem 2019; 17:4825-4834. [PMID: 31033987 DOI: 10.1039/c9ob00641a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
To inform the design of future merocyanine-based sensors for nucleophilic analytes, a range of model styrylindolium salts were synthesised, and their behaviour towards cyanide, methanethiolate and sulfide was examined using spectroscopic techniques. In the majority of cases, standard 1,2- and 1,4-nucleophilic additions predominated; however, 4-nitrostyrylindolium salts underwent an unexpected dearomatising 1,8-addition with sulfur-centred nucleophiles. The enamine triene products thus produced display useful optical properties and provide a platform for novel sensor design, and the unusual 1,8-reaction pathway enables synthesis of novel molecular architecture.
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Affiliation(s)
- Alexis Perry
- Biosciences, University of Exeter, Stocker Road, Exeter EX4 4QD, UK.
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11
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Chao XJ, Wang KN, Sun LL, Cao Q, Ke ZF, Cao DX, Mao ZW. Cationic Organochalcogen with Monomer/Excimer Emissions for Dual-Color Live Cell Imaging and Cell Damage Diagnosis. ACS APPLIED MATERIALS & INTERFACES 2018; 10:13264-13273. [PMID: 29616788 DOI: 10.1021/acsami.7b12521] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Studies on the development of fluorescent organic molecules with different emission colors for imaging of organelles and their biomedical application are gaining lots of focus recently. Here, we report two cationic organochalcogens 1 and 2, both of which exhibit very weak green emission (Φ1 = 0.12%; Φ2 = 0.09%) in dilute solution as monomers, but remarkably enhanced green emission upon interaction with nucleic acids and large red-shifted emission in aggregate state by the formation of excimers at high concentration. More interestingly, the monomer emission and excimer-like emission can be used for dual color imaging of different organelles. Upon passively diffusing into cells, both probes selectively stain nucleoli with strong green emission upon 488 nm excitation, whereas upon 405 nm excitation, a completely different stain pattern by staining lysosomes (for 1) or mitochondria (for 2) with distinct red emission is observed because of the highly concentrated accumulation in these organelles. Studies on the mechanism of the accumulation in lysosomes (for 1) or mitochondria (for 2) found that the accumulations of the probes are dependent on the membrane permeabilization, which make the probes have great potential in diagnosing cell damage by sensing lysosomal or mitochondrial membrane permeabilization. The study is demonstrative, for the first time, of two cationic molecules for dual-color imaging nucleoli and lysosomes (1)/mitochondria (2) simultaneously in live cell based on monomer and excimer-like emission, respectively, and more importantly, for diagnosing cell damage.
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Affiliation(s)
- Xi-Juan Chao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China
| | - Kang-Nan Wang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China
| | - Li-Li Sun
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China
| | - Qian Cao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China
| | - Zhuo-Feng Ke
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China
| | - Du-Xia Cao
- School of Materials Science and Engineering , University of Jinan , Jinan 250022 Shandong , China
| | - Zong-Wan Mao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China
- College of Materials and Energy , South China Agricultural University , Guangzhou 510642 , China
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12
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Verwilst P, Kim HS, Kim S, Kang C, Kim JS. Shedding light on tau protein aggregation: the progress in developing highly selective fluorophores. Chem Soc Rev 2018; 47:2249-2265. [DOI: 10.1039/c7cs00706j] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The development of highly selective fluorophores for tau protein aggregates, a key feature of Alzheimer's disease, is highlighted.
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Affiliation(s)
| | | | - Soobin Kim
- Department of Chemistry
- Korea University
- Seoul 02841
- Korea
| | - Chulhun Kang
- The School of East-West Medical Science
- Kyung Hee University
- Yongin 17104
- Korea
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13
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Surfactant-modulated discriminative sensing of HNO and H2S with a Cu2+-complex-based fluorescent probe. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.07.039] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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14
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Gaur P, Kumar A, Dey G, Kumar R, Bhattacharyya S, Ghosh S. Selenium Incorporated Cationic Organochalcogen: Live Cell Compatible and Highly Photostable Molecular Stain for Imaging and Localization of Intracellular DNA. ACS APPLIED MATERIALS & INTERFACES 2016; 8:10690-10699. [PMID: 27066840 DOI: 10.1021/acsami.6b00675] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Successful integration of selenium unit into a newly designed cationic chemical architecture led to the development of a highly photostable molecular maker PA5 to be used in fluorescence microscopy as cellular nucleus staining agent for longer duration imaging under continuous laser illumination. Adaptation of a targeted single-atom modification strategy led to the development of a series of proficient DNA light-up probes (PA1-PA5). Further, their comparative photophysical studies in the presence of DNA revealed the potential of electron rich heteroatoms of chalcogen family in improving binding efficiency and specificity of molecular probes toward DNA. The findings of cell studies confirmed the outstanding cell compatibility of probe PA5 in terms of cell permeability, biostability, and extremely low cytotoxicity. Moreover, the photostability experiment employing continuous laser illumination in solution phase as well as in cell assay (both fixed and live cells) revealed the admirable photobleaching resistance of PA5. Finally, while investigating the phototoxicity of PA5, the probe was found not to exhibit light-induced toxicity even when irradiated for longer duration. All these experimental results demonstrated the promising standing of PA5 as a futuristic cell compatible potential stain for bioimaging and temporal profiling of DNA.
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Affiliation(s)
- Pankaj Gaur
- School of Basic Sciences, Indian Institute of Technology Mandi , Mandi 175001, Himachal Pradesh, India
| | - Ajay Kumar
- Department of Biophysics, Post Graduate Institute of Medical Education and Research , Chandigarh, 160012, India
| | - Gourab Dey
- School of Basic Sciences, Indian Institute of Technology Mandi , Mandi 175001, Himachal Pradesh, India
| | - Rajendra Kumar
- UGC Centre of Excellence in Applications of Nanomaterials, Nanoparticles & Nanocomposites, Panjab University , Chandigarh 160014, India
| | - Shalmoli Bhattacharyya
- Department of Biophysics, Post Graduate Institute of Medical Education and Research , Chandigarh, 160012, India
| | - Subrata Ghosh
- School of Basic Sciences, Indian Institute of Technology Mandi , Mandi 175001, Himachal Pradesh, India
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15
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Abstract
The zebrafish (Danio rerio) is a small, tropical, freshwater fish that has emerged as a powerful vertebrate model organism for studying genetics and development. Its small size, transparency, cost-effectiveness, close genome homology to humans compared with invertebrates, and capacity for genetic manipulation are all valuable attributes for an excellent animal model. There are additional advantages for using zebrafish specifically in drug discovery, including ease of exposure to chemicals in water. In effect, zebrafish can bridge a gap between in vitro and mammalian work, reducing the use of larger animals and attrition rates. In the drug-discovery process, zebrafish can be used at many stages, including target identification and validation, identification of lead compounds, studying structure-activity relationships and drug safety profiling. In this review, we highlight the potential for the zebrafish model to make the drug-discovery process simpler, more effective and cost-efficient.
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16
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Han Q, Shi Z, Tang X, Yang L, Mou Z, Li J, Shi J, Chen C, Liu W, Yang H, Liu W. A colorimetric and ratiometric fluorescent probe for distinguishing cysteine from biothiols in water and living cells. Org Biomol Chem 2014; 12:5023-30. [DOI: 10.1039/c4ob00463a] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A highly selective merocyanine-based fluorescent probe was developed, which can significantly distinguish Cys from Hcy and GSH by their kinetic profiles in water and respond to the intracellular Cys.
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Affiliation(s)
- Qingxin Han
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000, P. R. China
| | - Zhaohua Shi
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000, P. R. China
| | - Xiaoliang Tang
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000, P. R. China
| | - Lizi Yang
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000, P. R. China
| | - Zuolin Mou
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000, P. R. China
| | - Jing Li
- College of Pharmacy
- Lanzhou University
- Lanzhou 730000, P. R. China
| | - Jinmin Shi
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000, P. R. China
| | - Chunyang Chen
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000, P. R. China
| | - Wei Liu
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000, P. R. China
| | - Huan Yang
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000, P. R. China
| | - Weisheng Liu
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000, P. R. China
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17
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Fluorescent rhodanine-3-acetic acids visualize neurofibrillary tangles in Alzheimer’s disease brains. Bioorg Med Chem 2013; 21:5139-44. [DOI: 10.1016/j.bmc.2013.06.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 06/11/2013] [Accepted: 06/16/2013] [Indexed: 02/03/2023]
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18
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Gu J, Anumala UR, Heyny-von Haußen R, Hölzer J, Goetschy-Meyer V, Mall G, Hilger I, Czech C, Schmidt B. Design, synthesis and biological evaluation of trimethine cyanine dyes as fluorescent probes for the detection of tau fibrils in Alzheimer's disease brain and olfactory epithelium. ChemMedChem 2013; 8:891-7. [PMID: 23592568 DOI: 10.1002/cmdc.201300090] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Indexed: 12/21/2022]
Abstract
Shedding light on grey matter: Fluorescent trimethine cyanines were evaluated as imaging probes for neurofibrillary tangles in post-mortem brain sections of Alzheimer's disease patients. These probes bind to neurofibrillary tangles with high contrast and selectivity over amyloid β plaques.
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Affiliation(s)
- Jiamin Gu
- Clemens Schöpf-Institute of Chemistry and Biochemistry, Technische Universität Darmstadt, Darmstadt, Germany
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