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Zhou B, Wang B, Bai M, Dong M, Tang X. Fluorescent probe for highly selective detection of cysteine in living cells. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 294:122523. [PMID: 36868018 DOI: 10.1016/j.saa.2023.122523] [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: 10/13/2022] [Revised: 02/13/2023] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
Cys play an important physiological role in the human body. Abnormal Cys concentration can cause many diseases. Therefore, it is of great significance to detect Cys with high selectivity and sensitivity in vivo. Because homocysteine (Hcy) and glutathione (GSH) have similar reactivity and structure to cysteine, few fluorescent probes have been reported to be specific and efficient for cysteine. In this study, we designed and synthesized an organic small molecule fluorescent probe ZHJ-X based on cyanobiphenyl, which can be used to specifically recognize cysteine. The probe ZHJ-X exhibits specific selectivity for cysteine, high sensitivity, short reaction response time, good anti-interference ability, and has a low detection limit of 3.8 × 10-6 M. The probe ZHJ-X was successfully applied to the visualization of Cys in living cells and had great application prospects in cell imaging and detection.
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Affiliation(s)
- Boxin Zhou
- Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu university, Zhenjiang, Jiangsu 212013, China
| | - Beibei Wang
- Sinopec Research Institute of Petroleum Processing, Beijing 100083, China
| | - Mengqi Bai
- Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu university, Zhenjiang, Jiangsu 212013, China
| | - Mingdong Dong
- Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu university, Zhenjiang, Jiangsu 212013, China
| | - Xu Tang
- Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu university, Zhenjiang, Jiangsu 212013, China.
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Xue XL, Zhang H, Chen GH, Yu GH, Hu HR, Niu SY, Wang KP, Hu ZQ. Coumarin-cyanine hybrid: A ratiometric fluorescent probe for accurate detection of peroxynitrite in mitochondria. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 292:122443. [PMID: 36753868 DOI: 10.1016/j.saa.2023.122443] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 01/22/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
There is an urgent need to develop highly sensitive and selective fluorescence probes for ONOO- in mitochondria. Herein, we reported a ratiometric fluorescent probe COUS with coumarin-cyanine hybrid as fluorophore and C = C bonds as reaction sites of ONOO-. The probe COUS was sensitive and selective to ONOO-, and had a large fluorescence emission shift (239 nm) as well as a low detection limit (41.88 nM). Moreover, COUS showed the mitochondrial targeting ability, and the targeting moiety could dissociate from the probe when reacting with ONOO-, which enabled COUS to accurately detect ONOO- in mitochondria.
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Affiliation(s)
- Xiao-Lei Xue
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Hao Zhang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Gui-Hua Chen
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Guan-Hua Yu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Hao-Ran Hu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Shu-Yan Niu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Kun-Peng Wang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
| | - Zhi-Qiang Hu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
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Activity-Based Fluorescent Probes Based on Hemicyanine for Biomedical Sensing. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227750. [PMID: 36431849 PMCID: PMC9695617 DOI: 10.3390/molecules27227750] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 10/26/2022] [Accepted: 11/08/2022] [Indexed: 11/12/2022]
Abstract
In recent years, fluorescent probes, as an analytical tool that can target and rapidly detect analytes, have been increasingly used for applications related to medical treatment, detection, and bioimaging. Researchers are interested in hemicyanine-based fluorescent probes because of their high quantum yield, tunable spectrum characteristics, absorption and emission in the near-infrared (NIR) region, and good photo-stability. The development of these dyes and their derivatives as NIR fluorescent probes for biological applications has advanced significantly in the last ten years. This review introduces processes for making hemicyanine dyes and the methodology for creating functional activity-based fluorescent probes. A variety of hemicyanine-based probes have been systematically developed for the detection of small biomolecules in various illnesses. Finally, the potential drawbacks of hemicyanine-based functional probes, and the prospects for future research and translation into clinical medicine, are also discussed. This study is intended to provide strategies for the development and design of novel fluorescence probes.
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Qiao L, Yang Y, Cai J, Lv X, Hao J, Li Y. Long wavelength emission fluorescent probe for highly selective detection of cysteine in living cells. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 264:120247. [PMID: 34399295 DOI: 10.1016/j.saa.2021.120247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 07/09/2021] [Accepted: 08/01/2021] [Indexed: 06/13/2023]
Abstract
We developed a fluorescent probe, named 2-(4-(acryloyloxy) phenyl)-4-(2-carboxyphenyl)-7-(diethylamino) chromenylium (PA-A), for detecting Cys using the -OH protection/deprotection strategy, which can react with Cys to form a red-emitting anthocyanidin derivative fluorophore. The probe has high selectivity to Cys over Hcy and GSH in phosphate buffer solution (PBS, 10 mM, pH = 7.4), high sensitivity, a low detection limit of 4.48 × 10-8 mol/L, and it can be recognized with the naked eye. Fluorescence imaging experiment of Cys with PA-A at the cellular successfully showed excellent tissue penetration.
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Affiliation(s)
- Liuqi Qiao
- School of Chemistry and Chemical Engineering, Shanxi University, Wucheng Road 92, Taiyuan 030006, PR China
| | - Yongxing Yang
- School of Chemistry and Chemical Engineering, Shanxi University, Wucheng Road 92, Taiyuan 030006, PR China.
| | - Jianhua Cai
- School of Chemistry and Chemical Engineering, Shanxi University, Wucheng Road 92, Taiyuan 030006, PR China
| | - Xin Lv
- School of Chemistry and Chemical Engineering, Shanxi University, Wucheng Road 92, Taiyuan 030006, PR China
| | - Junsheng Hao
- School of Chemistry and Chemical Engineering, Shanxi University, Wucheng Road 92, Taiyuan 030006, PR China
| | - Yaping Li
- School of Chemistry and Chemical Engineering, Shanxi University, Wucheng Road 92, Taiyuan 030006, PR China.
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Effectively controlling the ESIPT behavior and fluorescence feature of 2-(2′-hydroxyphenyl)-4-chloromethylthiazole by changing its π-conjugation: A theoretical exploration. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113548] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Yang QQ, Ji N, Zhan Y, Tian QQ, Cai ZD, Lu XL, He W. Rational design of a new near-infrared fluorophore and apply to the detection and imaging study of cysteine and thiophenol. Anal Chim Acta 2021; 1186:339116. [PMID: 34756262 DOI: 10.1016/j.aca.2021.339116] [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: 07/03/2021] [Revised: 09/18/2021] [Accepted: 09/24/2021] [Indexed: 12/23/2022]
Abstract
The development of a near-infrared fluorophore with excellent fluorescence performance, a large Stokes shift, and good biocompatibility has become a focus in the field of fluorescence imaging in recent years. Based on quantum chemistry calculations and reasonable molecular design strategies, a new NIR fluorophore was developed and characterized by simple synthesis, easy structural modification, and a large Stokes shift (105 nm). Furthermore, two new "activatable" fluorescent probes QN-Cys and QN-DNP were synthesized using a simple structural modification. The probe QN-Cys can recognize Cys with high sensitivity (LOD = 128 nM) and high selectivity, and its fluorescence intensity has a good linear relationship with the Cys concentration in the range of 5-35 μM. Furthermore, probe QN-Cys can effectively distinguish Cys from Hcy and GSH, and was successfully applied to the detection and imaging of Cys in human serum, cells, and zebrafish. The probe QN-DNP showed a good specific and sensitive (LOD = 78 nM) fluorescence response to thiophenol, and its fluorescence intensity has a good linear relationship with the thiophenol concentration in the range of 5-30 μM. Furthermore, it was successfully applied to detect thiophenol in real water samples with good recoveries (97-102%), and image thiophenol in living cells, zebrafish and mice. Notebly, the QN-DNP probe could be applied to visualize the distribution of thiophenol in the mice.
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Affiliation(s)
- Qing-Qing Yang
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, PR China
| | - Nan Ji
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, PR China
| | - Yu Zhan
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, PR China
| | - Qin-Qin Tian
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, PR China
| | - Ze-Dong Cai
- Department of Pharmaceutics, School of Pharmacy, The Fourth Military Medical University, Xi'an, 710032, PR China
| | - Xian-Lin Lu
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, PR China
| | - Wei He
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, PR China.
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Zou F, Wang C, Song W, Shen L, Xu R, Wang M, Wang M, Sun T, Wang J. Probe with large Stokes shift for effective cysteine imaging in living cells. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 257:119775. [PMID: 33862373 DOI: 10.1016/j.saa.2021.119775] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 03/19/2021] [Accepted: 03/30/2021] [Indexed: 06/12/2023]
Abstract
A new fluorescence probe L, which featured with a large Stokes shift (216 nm), was designed for sensitive detection of cysteine (Cys) and a potential sensing mechanism derived from excited state intramolecular proton transfer (ESIPT) was proposed. More importantly, probe L exhibits higher selective to Cys than other amino acid due to its specific cyclization between acrylate group and Cys. Meanwhile, the probe L shows a low detection limit of 8.82 × 10-8 M, which is enough for detecting Cys in organisms. Furthermore, this probe displays high biocompatibility and can image Cys in living cells.
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Affiliation(s)
- Fengxia Zou
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, PR China
| | - Chun Wang
- School of Textile and Clothing, Nantong University, Nantong 226001, PR China; Nantong Key Laboratory of Intelligent and New Energy Materials, Nantong 226001, PR China
| | - Wenwu Song
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, PR China
| | - Lujie Shen
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, PR China
| | - Runsheng Xu
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, PR China
| | - Miao Wang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, PR China; Nantong Key Laboratory of Intelligent and New Energy Materials, Nantong 226001, PR China
| | - Minmin Wang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, PR China; Nantong Key Laboratory of Intelligent and New Energy Materials, Nantong 226001, PR China.
| | - Tongming Sun
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, PR China.
| | - Jin Wang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, PR China; Nantong Key Laboratory of Intelligent and New Energy Materials, Nantong 226001, PR China.
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Qi S, Zhang H, Wang X, Lv J, Liu D, Shen W, Li Y, Du J, Yang Q. Development of a NIR fluorescent probe for highly selective and sensitive detection of cysteine in living cells and in vivo. Talanta 2021; 234:122685. [PMID: 34364484 DOI: 10.1016/j.talanta.2021.122685] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 06/30/2021] [Accepted: 07/02/2021] [Indexed: 12/12/2022]
Abstract
Cysteine (Cys) plays important physiological roles in the human body, and abnormal Cys concentrations can cause a variety of diseases. Thus, detecting Cys with high selectivity and sensitivity in vivo is important. Near-infrared (NIR) fluorescent probes are widely employed in biological detection because of their excellent optical properties such as minimal damage to biological samples, low background interference and high signal-to-noise ratio. However, few NIR fluorescent probes that can detect Cys over homocysteine (Hcy) and glutathione (GSH) have been reported because of their similar reactivity and structure. In this work, a highly water-soluble NIR probe (CYNA) for detecting Cys whose structure is similar to that of indocyanine green and is based on cyanine skeleton was synthesized and via aromatic nucleophilic substitution-rearrangement (SNAr-rearrangement) to specific recognize the cysteine. The probe showed high selectivity toward Cys and superior biosecurity, excellent biocompatibility and prolonged dynamic imaging. It also has long fluorescence emission wavelength (820 nm), low detection limit (14 nM) and was successfully applied for visualizing Cys in living cells and mice, which has great promise for applications in noninvasive vivo biological imaging and detection.
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Affiliation(s)
- Shaolong Qi
- China-Japan Union Hospital of Jilin University, Changchun, 130031, China; Key Laboratory of Lymphatic Surgery Jilin Province, Engineering Laboratory of Lymphatic Surgery Jilin Province, Changchun, 130031, China
| | - Haiyan Zhang
- China-Japan Union Hospital of Jilin University, Changchun, 130031, China; Key Laboratory of Lymphatic Surgery Jilin Province, Engineering Laboratory of Lymphatic Surgery Jilin Province, Changchun, 130031, China
| | - Xinyu Wang
- China-Japan Union Hospital of Jilin University, Changchun, 130031, China; Key Laboratory of Lymphatic Surgery Jilin Province, Engineering Laboratory of Lymphatic Surgery Jilin Province, Changchun, 130031, China
| | - Jialin Lv
- School of Life Sciences, Jilin University, Changchun, 130012, China
| | - Dahai Liu
- China-Japan Union Hospital of Jilin University, Changchun, 130031, China; Key Laboratory of Lymphatic Surgery Jilin Province, Engineering Laboratory of Lymphatic Surgery Jilin Province, Changchun, 130031, China
| | - Wenbin Shen
- Department of Lymphsurgery, Capital Medical University Affiliated Beijing Shijitan Hospital, Beijing, 100038, China
| | - Yaoxian Li
- College of Chemistry, Jilin University, Changchun, 130012, China
| | - Jianshi Du
- China-Japan Union Hospital of Jilin University, Changchun, 130031, China; Key Laboratory of Lymphatic Surgery Jilin Province, Engineering Laboratory of Lymphatic Surgery Jilin Province, Changchun, 130031, China.
| | - Qingbiao Yang
- College of Chemistry, Jilin University, Changchun, 130012, China; Key Laboratory of Lymphatic Surgery Jilin Province, Engineering Laboratory of Lymphatic Surgery Jilin Province, Changchun, 130031, China.
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Chen H, Zhao J, Lin J, Dong B, Li H, Geng B, Yan M. Amphiphilic copolymer fluorescent probe for mitochondrial viscosity detection and its application in living cells. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 252:119499. [PMID: 33556793 DOI: 10.1016/j.saa.2021.119499] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 12/22/2020] [Accepted: 01/14/2021] [Indexed: 06/12/2023]
Abstract
The mitochondrial viscosity measurement with the amphiphilic copolymer fluorescent probe (PP) has been successfully revealed for the first time. PP was synthesized, starting from a hydrophobic rhodamine derivative fluorophore and hydrophilic 2-hydroxyethyl acrylate (HEA) by radical polymerization, which could be used to detect mitochondrial viscosity specifically. The systematic investigation demonstrated that the fluorescence emission of PP with a deep red emission increased about 9-fold when the medium is changed from methanol to 99% glycerol, indicating high viscosity dependence. Moreover, PP could self-assemble into nanospheres with the particle size of about 140 nm in water and the nano-structure enabled PP to enter living cells quickly. Cytotoxicity test showed that the cells survival rate remained above 70% at 70 μg·mL-1 of PP. Good biocompatibility and low cytotoxicity of PP are promising to provide a high contrast fluorescence imaging. Taken together, the results point the way to development of novel amphiphilic copolymer fluorescent probes-based the detection in solutions, physiology and pathology.
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Affiliation(s)
- Huiying Chen
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China; Institute of Fluorescent Probes for Biological Imaging, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Jianzhi Zhao
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China; Institute of Fluorescent Probes for Biological Imaging, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Junzhi Lin
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China; Institute of Fluorescent Probes for Biological Imaging, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Baoli Dong
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China; Institute of Fluorescent Probes for Biological Imaging, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Hui Li
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China; Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, University of Jinan, Jinan 250022, China
| | - Bing Geng
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China; Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, University of Jinan, Jinan 250022, China.
| | - Mei Yan
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China; Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, University of Jinan, Jinan 250022, China.
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Chao J, Wang Z, Zhang Y, Huo F, Yin C, Li M, Duan Y. A Pyrene-Based Fluorescent Probe for Specific Detection of Cysteine and its Application in Living Cell. J Fluoresc 2021; 31:727-732. [PMID: 33609214 DOI: 10.1007/s10895-021-02703-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 02/11/2021] [Indexed: 01/23/2023]
Abstract
Cysteine (Cys) is an essential amino acid in organism, which is transformed from methionine in vivo and participates in protein synthesis and cell redox process. Therefore, the detection of Cys is of great significance. In this work, a novel fluorescent probe, (E)-3-(2-chloroquinolin-3-yl)-1-(pyren-3-yl) prop-2-en-1-one (PAQ) was designed and synthesized to specifically detect Cys. The response mechanism of the reaction between PAQ and Cys was due to the addition reaction of Cys to α,β-unsaturated ketone of PAQ. Interestingly, the addition of Cys induced significant fluorescence intensity enhancement at 462 nm. PAQ exhibited favorable sensing properties towards Cys such as the low limit of detection (0.27 μM) and fast response speed (2 min). In addition, PAQ displayed high selectivity and anti-interference ability toward Cys among various analytes. Notably, PAQ has been successfully used to image exogenous and endogenous Cys in HeLa cells.
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Affiliation(s)
- Jianbin Chao
- Scientific Instrument Center, Shanxi University, Taiyuan, 030006, China.
| | - Zhuo Wang
- Scientific Instrument Center, Shanxi University, Taiyuan, 030006, China
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, China
| | - Yongbin Zhang
- Research Institute of Applied Chemistry, Shanxi University, Taiyuan, 030006, China
| | - Fangjun Huo
- Research Institute of Applied Chemistry, Shanxi University, Taiyuan, 030006, China
| | - Caixia Yin
- Institute of Molecular Science, Shanxi University, Taiyuan, 030006, China
| | - Ming Li
- Scientific Instrument Center, Shanxi University, Taiyuan, 030006, China
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, China
| | - Yuexiang Duan
- Scientific Instrument Center, Shanxi University, Taiyuan, 030006, China
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, China
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Rui B, Feng Y, Luo L. A novel benzo[a]phenazin-based fluorescence probe for selective detection of cysteine with anti-cancer potency. Talanta 2020; 224:121902. [PMID: 33379107 DOI: 10.1016/j.talanta.2020.121902] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/05/2020] [Accepted: 11/12/2020] [Indexed: 01/20/2023]
Abstract
Among the physiological and pathological sulfur-containing species, cysteine (Cys) is the most typical one which is an important component of the REDOX system in vivo. Monitoring the level of Cys from other competing species seems quite important in pre-clinical diagnosis and therapeutic evaluation. Herein, we developed a selective fluorescent probe, BPCys, for Cys from the benzo[a]phenazin backbone which had the potential of anti-cancer potency. BPCys suggested advantages including high specificity (40 fold over other species), high sensitivity (detection limit: 18 nM), wide pH adaptability (6.0-11.0) and in particular, the anti-cancer effect. Biological assays and in silico simulation hinted the potency of the detecting product on Topoisomerase I/II. In brief, this study raised a practical strategy for monitoring the Cys level in living cells, especially in cancer models with its anti-cancer potential, thus opened the mind of exploring more specific tool for specific applications.
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Affiliation(s)
- Bing Rui
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210023, China
| | - Yangrui Feng
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210023, China
| | - Lan Luo
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210023, China.
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