1
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Song L, Cui C, Lin T, Kong X, Shi K. A series of anthracene-derived dyes for Cu 2+-assisted CO sensing and bio-imaging: synthesis, performance, and mechanism. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 320:124565. [PMID: 38875925 DOI: 10.1016/j.saa.2024.124565] [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: 04/02/2024] [Revised: 05/12/2024] [Accepted: 05/29/2024] [Indexed: 06/16/2024]
Abstract
Endogenous CO acts as an important messenger for signal transduction and therapeutic effect in the human body. Fluorescent imaging appears to be a promising method for endogenous CO recognition, but traditional luminescent probes based on Pd-complexes suffered from defects of high cost. In this work, four anthracene-derived dyes having an = N-N = group were synthesized for Cu2+-assisted CO sensing. Their molecular structure, photophysical performance and spectral response to Cu2+ and CO were analyzed in detail. The optimal probe showed good selectivity and quenching effect to Cu2+, with PLQY (photoluminescence quantum yield) decreased from 0.33 to 0.04. The quenching mechanism was found as a static quenching mechanism by forming a non-fluorescent complex with Cu2+ (stoichiometric ratio = 1:1), as revealed by single crystal, EPR (electron paramagnetic resonance), and XPS (X-ray photoelectron spectroscopy) analysis. Such quenching effect could be reversed by CO, showing recovered fluorescence, with PLQY recovered to 0.32 within 328 s. Discussion on cellular endogenous CO imaging was included as well.
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Affiliation(s)
- Lina Song
- Department of Clinical Laboratory, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Chunguo Cui
- Department of Breast Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Tiantian Lin
- Provincial Key Laboratory for Gene Diagnosis of Cardiovascular Disease, Jilin Provincial Engineering Laboratory for Endothelial Function and Genetic Diagnosis, Department of Cardiology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Xiao Kong
- Provincial Key Laboratory for Gene Diagnosis of Cardiovascular Disease, Jilin Provincial Engineering Laboratory for Endothelial Function and Genetic Diagnosis, Department of Cardiology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Kaiyao Shi
- Provincial Key Laboratory for Gene Diagnosis of Cardiovascular Disease, Jilin Provincial Engineering Laboratory for Endothelial Function and Genetic Diagnosis, Department of Cardiology, China-Japan Union Hospital of Jilin University, Changchun, China.
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2
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Sun M, Wang X. A series of triphenylamine-derived fluorophores attached to a Cu-based MOF for gaseous CO optical sensing: synthesis, performance, and mechanism. Mikrochim Acta 2024; 191:349. [PMID: 38806947 DOI: 10.1007/s00604-024-06434-w] [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: 03/20/2024] [Accepted: 05/13/2024] [Indexed: 05/30/2024]
Abstract
A series of triphenylamine-derived fluorescent dyes were attached to a Cu2+-containing MOF (metal-organic framework), denoted as Pm@CuMOF. The molecular structures of these dyes were discussed by the single crystal structures. Their major absorption bands peaked at 410-450 nm, showing emission bands ranging from 556 to 586 nm with emission quantum yields ranging from 8.0 to 15.1%. It was found that the [-N(C2H5)2] group generally improved sensing performance, and the -OH group in the dyes helped the Cu2+ quenching effect. Pm@CuMOF was observed by SEM as nanorods with a width of ~100 nm and a length of 300 nm. Their XRD patterns and N2 adsorption/desorption isotherms were recorded to confirm their porous structure. A low probe loading level of ~4% was determined by TGA result. The CO sensing mechanism was revealed as a Cu2+/Cu+-involved sensing mechanism based on the result of NMR titration, IR, XPS, and EPR. The fluorescence of these triphenylamine-derived dyes was firstly quenched by CuMOF. In contact with CO, Cu2+ was reduced to Cu+, accompanied by the release and fluorescence recovery of the fluorescent dyes, showing emission turn-on effect towards CO gas. Pm@CuMOF showed increased emission intensity at CO level of 0.005% (versus N2), with response times ranging from 123 s to 280 s (depending on various temperatures). Good selectivity was observed over competing alkane gases, with stable emission for at least 5 days, but no linear calibration plots were observed.
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Affiliation(s)
- Meng Sun
- College of Biological and Food Engineering, Jilin Engineering Normal University, No. 3050 Kaixuan Road, Changchun City, 130052, Jilin Province, China.
| | - Xue Wang
- College of Biological and Food Engineering, Jilin Engineering Normal University, No. 3050 Kaixuan Road, Changchun City, 130052, Jilin Province, China
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3
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Lin T, Song L, Cui C, Kong X, Shi K. Azoanthracene-core structure as Cu 2+-assisted CO sensing probe: Characterization, performance, and bioimaging. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 313:124122. [PMID: 38479230 DOI: 10.1016/j.saa.2024.124122] [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: 11/30/2023] [Revised: 02/29/2024] [Accepted: 03/04/2024] [Indexed: 04/02/2024]
Abstract
Detection of endogenous CO (carbon monoxide) is an interesting topic in biology because it has been discovered as a messenger for signal transduction and therapeutic effects in vital biological activities. Fluorescence imaging has proven a powerful tool for detecting endogenous CO, which drives the development of low-cost and easy-to-use fluorescent probes. In this study, four azobenzene derivatives (A1, A2, A3, and A4) with various substituents were reported, including their geometric structures, photophysical parameters, and spectral responses to Cu2+ and CO. The relationship between substituent structure and performance was discussed along with Cu2+ quenching and CO sensing mechanisms. The optimal probe (A1), which had no substituent, efficiently quenched fluorescence in the presence of Cu2+, with its PLQY decreased from 0.33 to 0.02, PLQY = photoluminescence quantum yield. Upon CO deoxidization, A1's fluorescence could be recovered (PLQY recovered to 0.32) within 180 s. Its sensing mechanism was static by forming a non-fluorescent complex with Cu2+ (with a stoichiometric ratio of 1:1). The bioimaging performance of A1 for endogenous CO in HeLa cells was reported.
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Affiliation(s)
- Tiantian Lin
- Provincial Key Laboratory for Gene Diagnosis of Cardiovascular Disease, Jilin Provincial Engineering Laboratory for Endothelial Function and Genetic Diagnosis, Department of Cardiology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Lina Song
- Department of Laboratory, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Chunguo Cui
- Department of Breast Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Xiao Kong
- Provincial Key Laboratory for Gene Diagnosis of Cardiovascular Disease, Jilin Provincial Engineering Laboratory for Endothelial Function and Genetic Diagnosis, Department of Cardiology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Kaiyao Shi
- Provincial Key Laboratory for Gene Diagnosis of Cardiovascular Disease, Jilin Provincial Engineering Laboratory for Endothelial Function and Genetic Diagnosis, Department of Cardiology, China-Japan Union Hospital of Jilin University, Changchun, China.
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4
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Bai C, Yao J, Meng Q, Dong Y, Chen M, Liu X, Wang X, Qiao R, Huang H, Wei B, Qu C, Miao H. A near-infrared fluorescent ratiometric probe with large Stokes shift for multi-mode sensing of Pb 2+ and bioimaging. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:133968. [PMID: 38452682 DOI: 10.1016/j.jhazmat.2024.133968] [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: 12/19/2023] [Revised: 03/03/2024] [Accepted: 03/04/2024] [Indexed: 03/09/2024]
Abstract
Pb2+ is a heavy metal ion pollutant that poses a serious threat to human health and ecosystems. The conventional methods for detecting Pb2+ have several limitations. In this study, we introduce a novel fluorescent probe that enables the detection of Pb2+ in the near-infrared region, free from interference from other common ions. A unique characteristic of this probe is its ability to rapidly and accurately identify Pb2+ through ratiometric measurements accompanied by a large Stokes shift of 201 nm. The limit of detection achieved by probe was remarkably low, surpassing the standards set by the World Health Organization, and outperforming previously reported probes. To the best of our knowledge, this is the first organic small-molecule fluorescent probe with both near-infrared emission and ratiometric properties for the detection of Pb2+. We present a triple-mode sensing platform constructed using a probe that allows for the sensitive and selective recognition of Pb2+ in common food items. Furthermore, we successfully conducted high-quality fluorescence imaging of Pb2+ in various samples from common edible plants, HeLa cells, Caenorhabditis elegans, and mice. Importantly, the probe-Pb2+ complex exhibited tumour-targeting capabilities. Overall, this study presents a novel approach for the development of fluorescent probes for Pb2+ detection.
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Affiliation(s)
- Cuibing Bai
- School of Chemistry and Materials Engineering, Anhui Provincial Key Laboratory of Innovative Drug Development and Industrial Integration Jointly Established Discipline, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui Province 236037, PR China
| | - Junxiong Yao
- School of Chemistry and Materials Engineering, Anhui Provincial Key Laboratory of Innovative Drug Development and Industrial Integration Jointly Established Discipline, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui Province 236037, PR China
| | - Qian Meng
- School of Chemistry and Materials Engineering, Anhui Provincial Key Laboratory of Innovative Drug Development and Industrial Integration Jointly Established Discipline, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui Province 236037, PR China
| | - Yajie Dong
- School of Chemistry and Materials Engineering, Anhui Provincial Key Laboratory of Innovative Drug Development and Industrial Integration Jointly Established Discipline, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui Province 236037, PR China
| | - Mengyu Chen
- School of Chemistry and Materials Engineering, Anhui Provincial Key Laboratory of Innovative Drug Development and Industrial Integration Jointly Established Discipline, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui Province 236037, PR China
| | - Xinyi Liu
- School of Chemistry and Materials Engineering, Anhui Provincial Key Laboratory of Innovative Drug Development and Industrial Integration Jointly Established Discipline, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui Province 236037, PR China
| | - Xinyu Wang
- School of Chemistry and Materials Engineering, Anhui Provincial Key Laboratory of Innovative Drug Development and Industrial Integration Jointly Established Discipline, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui Province 236037, PR China
| | - Rui Qiao
- School of Chemistry and Materials Engineering, Anhui Provincial Key Laboratory of Innovative Drug Development and Industrial Integration Jointly Established Discipline, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui Province 236037, PR China.
| | - Huanan Huang
- College of Chemistry and Chemical Engineering, Jiangxi Province Engineering Research Center of Ecological Chemical Industry, Xinghuo Organosilicon Industry Research Center, Jiujiang University, Jiujiang 332005, PR China.
| | - Biao Wei
- School of Chemistry and Materials Engineering, Anhui Provincial Key Laboratory of Innovative Drug Development and Industrial Integration Jointly Established Discipline, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui Province 236037, PR China
| | - Changqing Qu
- Research Center of Anti-aging Chinese Herbal Medicine of Anhui Province, Fuyang, Anhui 236037, PR China
| | - Hui Miao
- School of Chemistry and Materials Engineering, Anhui Provincial Key Laboratory of Innovative Drug Development and Industrial Integration Jointly Established Discipline, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui Province 236037, PR China.
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5
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Rong X, Liu C, Li M, Shi J, Yu M, Sheng W, Zhu B, Wang Z. A long-wavelength mitochondria-targeted CO fluorescent probe for living cells and zebrafish imaging. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:442-448. [PMID: 38165694 DOI: 10.1039/d3ay01886e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
Carbon monoxide (CO) not only causes damage to life and health as an environmental pollutant, but also undertakes many physiological functions in organisms. In particular, developing means that can be used for the determination of CO in organelles will provide insight into the vital role it plays. Studies have shown that mitochondrial respiration is closely related to CO concentrations, so it is critical to develop tools for CO detection in mitochondria. Here, we use a rhodamine derivative that can target mitochondria as fluorophores to construct a mitochondrial-labeled CO fluorescence probe (Rh-CO) with high sensitivity (detection limit: 9.4 nM), excellent water-solubility, and long emission (λem = 630 nm). Prominently, the probe has outstanding mitochondria-targeting capabilities. Moreover, we used transient glucose deprivation (TGD) and heme to stimulate endogenous CO production in living cells and zebrafish, respectively, and the probe exhibited excellent imaging capabilities. All in all, we expect this probe to contribute to a deeper understanding of the role played by CO in mitochondria.
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Affiliation(s)
- Xiaodi Rong
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China.
| | - Caiyun Liu
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China.
| | - Mingzhu Li
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China.
| | - Jiafan Shi
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China.
| | - Miaohui Yu
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China.
| | - Wenlong Sheng
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China.
| | - Baocun Zhu
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China.
| | - Zhongpeng Wang
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China.
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6
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Chen C, Li J, Dan H, He J, Wang D, Oelschlaeger P, Wang N, Zhang Y, Pei Y, Yang KW. A self-reported inhibitor of metallo-carbapenemases for reversing carbapenem resistance. Int J Biol Macromol 2023; 252:126441. [PMID: 37607651 DOI: 10.1016/j.ijbiomac.2023.126441] [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: 03/31/2023] [Revised: 07/08/2023] [Accepted: 08/18/2023] [Indexed: 08/24/2023]
Abstract
Metallo-carbapenemases-mediated carbapenem-resistant Enterobacterales (CREs) has been acknowledged as "urgent threat" by the World Health Organization. The discovery of new strategies that block metallo-carbapenemases activity to reverse carbapenem resistance is an urgent need. In this study, a coumarin copper complex containing a PEG linker and glucose ligand, GluC-Cu, was used to reverse carbapenem resistance. Interestingly, it could effectively inhibit metallo-carbapenemases (NDM-1, IMP-1 and ImiS) with an IC50 value in the range of 0.23-1.21 μM, and simultaneously release the green fluorescence signal (GluC), therefore exhibiting self-reported inhibition performance. The inhibition mechanism of oxidizing Zn(II) thiolate site of NDM-1 from Cu2+ to Cu+ was verified by fluorescence assay, HR-MS, and XPS. Moreover, GluC-Cu in combination with meropenem showed excellent synergistic antibacterial effect to effectively combat E. coli expressing metallo-carbapenemases in vitro and in a mice infection model. This bifunctional metallo-carbapenemases inhibitor provides a novel chemical tool to overcome carbapenem resistance.
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Affiliation(s)
- Cheng Chen
- Shaanxi Key Laboratory of Economic Plant Resources Development and Utilization, College of Forestry, Northwest A&F University, Yangling 712100, PR China; Key laboratory synthetic and Natural Functional Molecular Chemistry of Ministry of Education, Chemical Biology Innovation Laboratory, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, PR China
| | - Jiahui Li
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, PR China
| | - Heng Dan
- Shaanxi Key Laboratory of Economic Plant Resources Development and Utilization, College of Forestry, Northwest A&F University, Yangling 712100, PR China
| | - Jingyi He
- Shaanxi Key Laboratory of Economic Plant Resources Development and Utilization, College of Forestry, Northwest A&F University, Yangling 712100, PR China
| | - Dongmei Wang
- Shaanxi Key Laboratory of Economic Plant Resources Development and Utilization, College of Forestry, Northwest A&F University, Yangling 712100, PR China.
| | - Peter Oelschlaeger
- Department of Pharmaceutical Sciences, College of Pharmacy, Western University of Health Sciences, Pomona, 91766, CA, United States
| | - Nana Wang
- Shaanxi Key Laboratory of Economic Plant Resources Development and Utilization, College of Forestry, Northwest A&F University, Yangling 712100, PR China
| | | | - Yuxin Pei
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, PR China.
| | - Ke-Wu Yang
- Key laboratory synthetic and Natural Functional Molecular Chemistry of Ministry of Education, Chemical Biology Innovation Laboratory, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, PR China.
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7
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Meng Q, Yao J, Chen M, Dong Y, Liu X, Zhao S, Qiao R, Bai C, Qu C, Miao H. Using Cu 2+ to regulate the emission feature of near-infrared fluorescent sensor with AIE: To detect ascorbic acid in food samples and its application in bioimaging. Anal Chim Acta 2023; 1276:341602. [PMID: 37573096 DOI: 10.1016/j.aca.2023.341602] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/02/2023] [Accepted: 07/07/2023] [Indexed: 08/14/2023]
Abstract
Conventional ascorbic acid (AA) detection methods such as chromatography, capillary electrophoresis, colorimetry, electrochemical detection, and enzymatic analysis require expensive equipment and complicated operation. Simple, rapid, and accurate AA detection is essential to inspect food quality, diagnose diseases, and assess immunity in humans. In this study, the first near-infrared fluorescence sensor DBHM with aggregation-induced emission was developed to detect AA under the involvement of Cu2+. The DBHM + Cu2+ sensor showed high sensitivity to AA with a limit of detection of 2.37 μM. The AA detection mechanism was investigated by optical studies, 1H NMR titration, high-resolution mass spectrometry, and infrared spectroscopy. AA was detected qualitatively and quantitatively by the DBHM + Cu2+ sensor in beverages, fruits, and Vitamin C tablets using a dual-mode (fluorescence and smartphone app) sensing platform. The new sensing system also showed low toxicity and excellent bioimaging in HeLa cells, C. elegans, and mice. This sensor could advance AA detection technology in the food industry and has potential bioimaging applications.
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Affiliation(s)
- Qian Meng
- School of Chemistry and Materials Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Anhui Provincical Key Laboratory for Degradation and Monitoring of Pollution of the Environment, Fuyang Normal University, Fuyang, Anhui Province, 236037, PR China
| | - Junxiong Yao
- School of Chemistry and Materials Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Anhui Provincical Key Laboratory for Degradation and Monitoring of Pollution of the Environment, Fuyang Normal University, Fuyang, Anhui Province, 236037, PR China
| | - Mengyu Chen
- School of Chemistry and Materials Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Anhui Provincical Key Laboratory for Degradation and Monitoring of Pollution of the Environment, Fuyang Normal University, Fuyang, Anhui Province, 236037, PR China
| | - Yajie Dong
- School of Chemistry and Materials Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Anhui Provincical Key Laboratory for Degradation and Monitoring of Pollution of the Environment, Fuyang Normal University, Fuyang, Anhui Province, 236037, PR China
| | - Xinyi Liu
- School of Chemistry and Materials Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Anhui Provincical Key Laboratory for Degradation and Monitoring of Pollution of the Environment, Fuyang Normal University, Fuyang, Anhui Province, 236037, PR China
| | - Shuyang Zhao
- School of Chemistry and Materials Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Anhui Provincical Key Laboratory for Degradation and Monitoring of Pollution of the Environment, Fuyang Normal University, Fuyang, Anhui Province, 236037, PR China
| | - Rui Qiao
- School of Chemistry and Materials Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Anhui Provincical Key Laboratory for Degradation and Monitoring of Pollution of the Environment, Fuyang Normal University, Fuyang, Anhui Province, 236037, PR China; Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China.
| | - Cuibing Bai
- School of Chemistry and Materials Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Anhui Provincical Key Laboratory for Degradation and Monitoring of Pollution of the Environment, Fuyang Normal University, Fuyang, Anhui Province, 236037, PR China; Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China.
| | - Changqing Qu
- Research Center of Anti-aging Chinese Herbal Medicine of Anhui Province, Fuyang, Anhui, 236037, PR China
| | - Hui Miao
- School of Chemistry and Materials Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Anhui Provincical Key Laboratory for Degradation and Monitoring of Pollution of the Environment, Fuyang Normal University, Fuyang, Anhui Province, 236037, PR China.
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8
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Liu X, Shi T, Xu C, Zhu M, Wang Y. A highly selective and sensitive ICT-based Cu 2+ fluorescent probe and its application in bioimaging. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 262:115127. [PMID: 37320915 DOI: 10.1016/j.ecoenv.2023.115127] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 06/05/2023] [Accepted: 06/08/2023] [Indexed: 06/17/2023]
Abstract
Cu2+ is an essential trace element for the organism, but its excess can also cause irreversible damage to the organism. As such, a "Turn-Off" fluorescent probe DPAP for the specific detection of Cu2+ was successfully constructed. DPAP exhibits large Stokes shift (120 nm), fast reaction speed (1 min), low detection limit (15.2 nM), low toxicity, and good cell permeability. Cu2+ quenches the fluorescence of DPAP by blocking its intramolecular charge transfer process to achieve the detection of Cu2+ and has been confirmed by HRMS, 1H NMR and DFT calculations. Excitingly, the five-cycle detection of Cu2+ and the successful recovery of trace Cu2+ in environmental water samples fully demonstrate the potential of DPAP for practical applications. In particular, DPAP can observe the distribution and translocation patterns of exogenous Cu2+ in HeLa cells and zebrafish in real-time. This research concept has offered important theoretical support for the study of the environmental behavior of heavy metal ions.
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Affiliation(s)
- Xina Liu
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, No. 130 Changjiang West Road, Hefei 230036, China
| | - Taozhong Shi
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, No. 130 Changjiang West Road, Hefei 230036, China
| | - Chenyang Xu
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, No. 130 Changjiang West Road, Hefei 230036, China
| | - Meiqing Zhu
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China.
| | - Yi Wang
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, No. 130 Changjiang West Road, Hefei 230036, China.
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9
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Liu D, Yang X, Wang B. Sensing a CO-Releasing Molecule (CORM) Does Not Equate to Sensing CO: The Case of DPHP and CORM-3. Anal Chem 2023; 95:9083-9089. [PMID: 37263968 PMCID: PMC10267888 DOI: 10.1021/acs.analchem.3c01495] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 05/22/2023] [Indexed: 06/03/2023]
Abstract
Carbon monoxide (CO) is an endogenous signaling molecule with demonstrated pharmacological effects. For studying CO biology, there is a need for sensitive and selective fluorescent probes for CO as research tools. In developing such probes, CO gas and/or commercially available metal-carbonyl-based "CO-releasing molecules" (CORMs) have been used as CO sources. However, new findings are steadily emerging that some of these commonly used CORMs do not release CO reliably in buffers commonly used for studying such CO probes and have very pronounced chemical reactivities of their own, which could lead to the erroneous identification of "CO probes" that merely detect the CORM used, not CO. This is especially true when the CO-sensing mechanism relies on chemistry that is not firmly established otherwise. Cu2+ can quench the fluorescence of an imine-based fluorophore, DPHP, presumably through complexation. The Cu2+-quenched fluorescence was restored through the addition of CORM-3, a Ru-based CORM. This approach was reported as a new "strategy for detecting carbon monoxide" with the proposed mechanism being dependent on CO reduction of Cu2+ to Cu1+ under near-physiological conditions ( Anal. Chem. 2022, 94, 11298-11306). The study only used CORM-3 as the source of CO. CORM-3 has been reported to have very pronounced redox reactivity and is known not to release CO in an aqueous solution unless in the presence of a strong nucleophile. To assess whether the fluorescent response of the DPHP-Cu(II) cocktail to CORM-3 was truly through detecting CO, we report experiments using both pure CO and CORM-3. We confirm the reported DPHP-Cu(II) response to CORM-3 but not pure CO gas. Further, we did not observe the stated selectivity of DPHP for CO over sulfide species. Along this line, we also found that a reducing agent such as ascorbate was able to induce the same fluorescent turn-on as CORM-3 did. As such, the DPHP-Cu(II) system is not a CO probe and cannot be used to study CO biology. Corollary to this finding, it is critical that future work in developing CO probes uses more than a chemically reactive "CO donor" as the CO source. Especially important will be to confirm the ability of the "CO probe" to detect CO using pure CO gas or another source of CO.
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Affiliation(s)
- Dongning Liu
- Department of Chemistry and
Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - Xiaoxiao Yang
- Department of Chemistry and
Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - Binghe Wang
- Department of Chemistry and
Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
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10
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Li H, Wang X, Yuan K, Lv L, Liu K, Li Z. Fluorescent Mechanism of a Highly Selective Probe for Copper(II) Detection: A Theoretical Study. ACS OMEGA 2023; 8:17171-17180. [PMID: 37214676 PMCID: PMC10193560 DOI: 10.1021/acsomega.3c01528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 04/25/2023] [Indexed: 05/24/2023]
Abstract
A highly selective probe for copper(II) detection based on the dansyl group was theoretically studied by means of (time-dependent) density functional theory. The calculated results indicated that the oscillator strength of the fluorescent process for the probe molecule is considerably large, but the counterpart of its copper(II) complex is nearly zero; therefore, the predicted radiative rate kr of the probe is several orders of magnitude larger than that of its complex; however, the predicted internal conversion rate kic of both the probe and its complex is of the same order of magnitude. In addition, the simulated intersystem crossing rate kisc of the complex is much greater than that of the probe due to the effect of heavy atom from the copper atom in the complex. Based on the above information, the calculated fluorescence quantum yield of the probe is 0.16% and that of the complex becomes 10-6%, which implies that the first excited state of the probe is bright state and that of the complex is dark state. For the complex, the hole-electron pair analysis indicates that the process of S0 → S1 belongs to metal-to-ligand charge transfer; its density-of-state diagram visually illustrates that the highest occupied molecular orbital (HOMO) contains the ingredient of the s orbital from the copper atom, which decreases the frontier orbital energy level and the overlap integral of HOMO and LUMO.
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Rong X, Peng Y, Liu C, Li M, Shi J, Yu M, Ba S, Sheng W, Zhu B. A novel highly sensitive fluorescent probe for imaging endogenous CO. NEW J CHEM 2022. [DOI: 10.1039/d2nj04920a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
A highly sensitive and selective fluorescent probe was constructed to detect carbon monoxide in living cells and zebrafish.
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Affiliation(s)
- Xiaodi Rong
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
| | - Yiyuan Peng
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
| | - Caiyun Liu
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
| | - Mingzhu Li
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
| | - Jiafan Shi
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
| | - Miaohui Yu
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China
| | - Shuaikang Ba
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China
| | - Wenlong Sheng
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China
| | - Baocun Zhu
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
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