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Nelson DJ, Vasimalai N, John SA, Sethuraman MG. Turn-Off Fluorometric Determination of Bilirubin Using Facile Synthesized Nitrogen-Doped Carbon Dots as a Fluorescent Probe. J Fluoresc 2024:10.1007/s10895-023-03572-x. [PMID: 38217780 DOI: 10.1007/s10895-023-03572-x] [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: 11/20/2023] [Accepted: 12/27/2023] [Indexed: 01/15/2024]
Abstract
Bilirubin plays a significant role in human health management, particularly in the case of jaundice. Because of the need for the monitoring of bilirubin levels in jaundice patients, the development of a robust sensitive method becomes essential. Here, we describe the development of a highly sensitive and selective turn-off fluorometric detection method for bilirubin in blood serum samples using nitrogen-doped carbon dots (N-CDs). N-CDs was synthesized by the pyrolysis process, using citric acid and L-asparagine as the carbon and nitrogen sources, respectively. The prepared N-CDs solution showed highly intense blue emission with good stability. The HR-TEM image of N-CDs revealed spherical dot-like structures with an average size calculated to be 7.16 nm. Further, the surface functional groups of N-CDs were analyzed by FT-IR, Raman, XRD, and XPS techniques. Fluorescence spectra showed the maximum emission intensity at 443 nm (λex). The linear range of addition was performed from 1 to 150 µM, and the limit of detection (LOD) was determined to be 1.97 nM. The emission of N-CDs was quenched by Förster Resonance Energy Transfer (FRET) by adding bilirubin. These N-CDs showed extraordinary sensitivity and selectivity in the detection of bilirubin. Hence, this fluorescent probe has been proven successful in detecting the concentration of free bilirubin in human serum samples.
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Affiliation(s)
- D James Nelson
- Department of Chemistry, The Gandhigram Rural Institute-Deemed to Be University, Gandhigram, Dindigul, 624302, Tamilnadu, India
| | - N Vasimalai
- Department of Chemistry, B.S. Abdur Rahman Crescent Institute of Science and Technology, Vandalur, Chennai, 600048, Tamilnadu, India
| | - S Abraham John
- Department of Chemistry, The Gandhigram Rural Institute-Deemed to Be University, Gandhigram, Dindigul, 624302, Tamilnadu, India
| | - M G Sethuraman
- Department of Chemistry, The Gandhigram Rural Institute-Deemed to Be University, Gandhigram, Dindigul, 624302, Tamilnadu, India.
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2
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Aazam ES, Majrashi MA. Novel Schiff Base Derived from Amino Pyrene: Synthesis, Characterization, Crystal Structure Determination, and Anticancer Applications of the Ligand and Its Metal Complexes. Molecules 2023; 28:7352. [PMID: 37959772 PMCID: PMC10648749 DOI: 10.3390/molecules28217352] [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: 10/03/2023] [Revised: 10/25/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023] Open
Abstract
In this study, we report the cytotoxicity of a newly synthesized Schiff base HL ((E)-2-ethoxy-6((pyren-1-ylimino)methyl)phenol) and its derived metal complexes (Zn(II), Cu(II), Co(II), Cr(III), and Fe(III)) along with their structural characterizations by means of elemental analysis, magnetic moment, molar conductance, IR, UV-Vis, ESR, and mass spectrometry. The single X-ray diffraction of the HL shows that it exists in the phenol-imine form in its solid state. The NMR and IR data indicate that the bidentate binding of the Schiff base ligand with the metal center occurs during complexation through the azomethine nitrogen atom and the hydroxyl group oxygen atom of the 3-ethoxy salicylaldehyde. The electronic spectra and magnetic measurements indicate that the Co(II) complex has a tetrahedral geometry and that the Cr(III) and Fe(III) complexes have a distorted octahedral geometry. The ESR and electronic spectra suggest that the Cu(II) complex has a distorted tetrahedral geometry. The cytotoxic effects of the HL and all of the metal complexes were studied using human breast cancer (MCF-7) cells. The Cu(II) and Zn(II) complexes exhibited the highest activity against the tested cell line, with IC50 values of 5.66 and 12.74 μg/mL, respectively, and their activity was higher than that of the fluorouracil cancer drug against the MCF-7 cells (18.05 μg/mL).
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Affiliation(s)
- Elham S. Aazam
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah P.O. Box 23622, Saudi Arabia
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3
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Das J, Ta S, Salam N, Das S, Ghosh S, Das D. Polymeric copper(ii) and dimeric oxovanadium(v) complexes of amide-imine conjugate: bilirubin recognition and green catalysis. RSC Adv 2023; 13:13195-13205. [PMID: 37124003 PMCID: PMC10141293 DOI: 10.1039/d3ra00702b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 04/13/2023] [Indexed: 05/02/2023] Open
Abstract
An exceptionally simple amide-imine conjugate, (E)-N'-(4-(diethylamino)-2-hydroxybenzylidene)-4-methylbenzohydrazide (L), derived by the condensation of 4-methyl-benzoic acid hydrazide (PTA) with 4-(diethylamino)-2-hydroxybenzaldehyde was utilized to prepare a dimeric oxo-vanadium (V1) and a one-dimensional (1D) copper(ii) coordination polymer (C1). The structures of L, V1 and C1 were confirmed by single crystal X-ray diffraction analysis. The experimental results indicate that V1 is a promising green catalyst for the oxidation of sulfide, whereas C1 has potential for a C-S cross-coupling reaction in a greener way. Most importantly, C1 is an efficient 'turn-on' fluorescence sensor for bilirubin that functions via a ligand displacement approach. The displacement equilibrium constant is 7.78 × 105 M-1. The detection limit for bilirubin is 1.15 nM in aqueous chloroform (chloroform/water, 1/4, v/v, PBS buffer, and pH 8.0).
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Affiliation(s)
- Jayanta Das
- Department of Chemistry, The University of Burdwan Burdwan 713104 WB India +91-342-2530452 +91-342-2533913, ext. 424
| | - Sabyasachi Ta
- Department of Chemistry, The University of Burdwan Burdwan 713104 WB India +91-342-2530452 +91-342-2533913, ext. 424
| | - Noor Salam
- Department of Chemistry, The University of Burdwan Burdwan 713104 WB India +91-342-2530452 +91-342-2533913, ext. 424
- Department of Chemistry, Surendranath College 24/2 MG Road Kolkata 700009 WB India
| | - Sudipta Das
- Raina Swami Bholananda Vidyayatan Burdwan 713421 WB India
| | - Subhasis Ghosh
- Department of Chemistry, The University of Burdwan Burdwan 713104 WB India +91-342-2530452 +91-342-2533913, ext. 424
| | - Debasis Das
- Department of Chemistry, The University of Burdwan Burdwan 713104 WB India +91-342-2530452 +91-342-2533913, ext. 424
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4
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Wu WX, Chang CW, Lee WF. (2-Hydroxyl-3-aminopyrenyl) propyl methacrylate-based thermo/metal ion sensitive fluorescent hydrogels. IRANIAN POLYMER JOURNAL 2023. [DOI: 10.1007/s13726-023-01158-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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5
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Turk P, Singh K, Choudhary S. Synthesis, Spectral Characterization, Electrochemical, Antioxidant and Antimicrobial Evaluation of 3d-Metal Complexes of 3-Mercapto-4-(Pyren-1-ylmethylene)Amino-1,2,4-Triazin-5-One. Polycycl Aromat Compd 2023. [DOI: 10.1080/10406638.2023.2172051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Prerna Turk
- Department of Chemistry, Kurukshetra University, Kurukshetra, India
- Government College Bherian, Kurukshetra, India
| | - Kiran Singh
- Department of Chemistry, Kurukshetra University, Kurukshetra, India
| | - Swati Choudhary
- Department of Biochemistry, Kurukshetra University, Kurukshetra, India
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6
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Anusuyadevi K, Velmathi S. Expeditious fluorimetric detection of bilirubin by simple imidazole derived luminophore and it's pragmatic applicability in spiked biological fluids. Anal Chim Acta 2023; 1239:340678. [PMID: 36628705 DOI: 10.1016/j.aca.2022.340678] [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: 07/21/2022] [Revised: 11/19/2022] [Accepted: 11/25/2022] [Indexed: 11/29/2022]
Abstract
Bilirubin is an indispensable biomarker for liver diseases. Utilizing organic molecules as sensor platform for effective detection of bilirubin are little. In addition, the reported fluorophores required longer incubation time for detection. Hence, herein we have attempted to design an imidazole derivative 4-(3H-imidazo[4,5-b]pyridin-2-yl)-N,N-diphenylaniline (IMI) from triphenylamine and pyridine units which could detect bilirubin swiftly without any incubation period. IMI manifested an instant quenching of emission in presence of bilirubin with limit of detection (LOD) 11.74 × 10-6 mol L-1. The mechanistic aspect of detection involves coexistence of both static and dynamic quenching which was suitably justified. Finally, the pragmatic application of IMI was performed in bio-fluids.
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Affiliation(s)
- Kathiresan Anusuyadevi
- Organic and Polymer Synthesis Laboratory, Department of Chemistry, National Institute of Technology, Tiruchirappalli, 620 015, India
| | - Sivan Velmathi
- Organic and Polymer Synthesis Laboratory, Department of Chemistry, National Institute of Technology, Tiruchirappalli, 620 015, India.
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7
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Rasin P, Manakkadan V, Vadakkedathu Palakkeezhillam VN, Haribabu J, Echeverria C, Sreekanth A. Simple Fluorescence Sensing Approach for Selective Detection of Fe 3+ Ions: Live-Cell Imaging and Logic Gate Functioning. ACS OMEGA 2022; 7:33248-33257. [PMID: 36157778 PMCID: PMC9494683 DOI: 10.1021/acsomega.2c03718] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 08/24/2022] [Indexed: 06/16/2023]
Abstract
A pyrene-based fluorescent chemosensor APSB [N-(pyrene-1-ylmethylene) anthracen-2-amine] was designed and developed by a simple condensation reaction between pyrene carboxaldehyde and 2-aminoanthracene. The APSB fluorescent sensor selectively binds Fe3+ in the presence of other metal ions. Apart from this, APSB shows high selectivity and sensitivity toward Fe3+ ion detection. The detection limit for APSB was 1.95 nM, and the binding constant (K b) was obtained as 8.20 × 105 M-1 in DMSO/water (95/5, v/v) medium. The fluorescence quantum yields for APSB and APSB-Fe3+ were calculated as 0.035 and 0.573, respectively. The function of this fluorescent sensor APSB can be explained through the photo-induced electron transfer mechanism which was further proved by density functional theory studies. Finally, a live-cell image study of APSB in HeLa cells was also carried out to investigate the cell permeability of APSB and its efficiency for selective detection of Fe3+ in living cells.
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Affiliation(s)
- Puthiyavalappil Rasin
- Department
of Chemistry, National Institute of Technology-Tiruchirappalli, 620015Tiruchirappalli, Tamil Nadu, India
| | - Vipin Manakkadan
- Department
of Chemistry, National Institute of Technology-Tiruchirappalli, 620015Tiruchirappalli, Tamil Nadu, India
| | | | - Jebiti Haribabu
- Facultad
de Medicina, Universidad de Atacama, Los Carreras 1579, 1532502Copiapo, Chile
| | - Cesar Echeverria
- Facultad
de Medicina, Universidad de Atacama, Los Carreras 1579, 1532502Copiapo, Chile
| | - Anandaram Sreekanth
- Department
of Chemistry, National Institute of Technology-Tiruchirappalli, 620015Tiruchirappalli, Tamil Nadu, India
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8
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Shellaiah M, Sun KW. Pyrene-Based AIE Active Materials for Bioimaging and Theranostics Applications. BIOSENSORS 2022; 12:bios12070550. [PMID: 35884351 PMCID: PMC9313392 DOI: 10.3390/bios12070550] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 07/18/2022] [Accepted: 07/19/2022] [Indexed: 05/06/2023]
Abstract
Aggregation-induced emission (AIE) is a unique research topic and property that can lead to a wide range of applications, including cellular imaging, theranostics, analyte quantitation and the specific detection of biologically important species. Towards the development of the AIE-active materials, many aromatic moieties composed of tetraphenylethylene, anthracene, pyrene, etc., have been developed. Among these aromatic moieties, pyrene is an aromatic hydrocarbon with a polycyclic flat structure containing four fused benzene rings to provide an unusual electron delocalization feature that is important in the AIE property. Numerous pyrene-based AIE-active materials have been reported with the AIE property towards sensing, imaging and theranostics applications. Most importantly, these AIE-active pyrene moieties exist as small molecules, Schiff bases, polymers, supramolecules, metal-organic frameworks, etc. This comprehensive review outlines utilizations of AIE-active pyrene-based materials on the imaging and theranostics studies. Moreover, the design and synthesis of these pyrene-based molecules are delivered with discussions on their future scopes.
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9
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Yeldir EK, Kaya İ. Synthesis, characterization and investigation of fluorescent Sn2+ probe potential of pyrene-derived monomer and its oligo(azomethine) compound. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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10
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Mukherjee A, Akulov AA, Santra S, Varaksin MV, Kim GA, Kopchuk DS, Taniya OS, Zyryanov GV, Chupakhin ON. 2,7-Diazapyrenes: a brief review on synthetic strategies and application opportunities. RSC Adv 2022; 12:9323-9341. [PMID: 35424878 PMCID: PMC8985108 DOI: 10.1039/d2ra00260d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 03/01/2022] [Indexed: 11/26/2022] Open
Abstract
2,7-Diazapyrenes are promising azaaromatic scaffolds with a unique structural geometry and supramolecular properties. This core moiety and its derivatives with some N-methyl cations like N-methyl-2,7,-diazapyrenium, and N,N'-dimethyl-2,7-diazapyrenium attract special attention due to their challenging photophysical properties, especially in the context of interactions with DNA and some of its mononucleotides. This review focuses on the analysis of the main synthetic approaches to 2,7-diazapyrene and its functional derivatives employing various strategies under different reaction conditions. The opportunities of applications of 2,7-diazapyrenes, including their remarkable photophysical and supramolecular properties, DNA-bindings, in sensors, molecular electronics, supramolecular systems, and related areas are also highlighted.
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Affiliation(s)
- Anindita Mukherjee
- Ural Federal University named after the first President of Russia B. N. Yeltsin 19 Mira str. Yekaterinburg 620002 Russian Federation
| | - Alexey A Akulov
- Ural Federal University named after the first President of Russia B. N. Yeltsin 19 Mira str. Yekaterinburg 620002 Russian Federation
| | - Sougata Santra
- Ural Federal University named after the first President of Russia B. N. Yeltsin 19 Mira str. Yekaterinburg 620002 Russian Federation
| | - Mikhail V Varaksin
- Ural Federal University named after the first President of Russia B. N. Yeltsin 19 Mira str. Yekaterinburg 620002 Russian Federation
- I. Ya. Postovskiy Institute of Organic Synthesis, UB of the RAS 22 S. Kovalevskoy Str. Yekaterinburg 620219 Russian Federation
| | - Grigory A Kim
- I. Ya. Postovskiy Institute of Organic Synthesis, UB of the RAS 22 S. Kovalevskoy Str. Yekaterinburg 620219 Russian Federation
| | - Dmitry S Kopchuk
- Ural Federal University named after the first President of Russia B. N. Yeltsin 19 Mira str. Yekaterinburg 620002 Russian Federation
- I. Ya. Postovskiy Institute of Organic Synthesis, UB of the RAS 22 S. Kovalevskoy Str. Yekaterinburg 620219 Russian Federation
| | - Olga S Taniya
- Ural Federal University named after the first President of Russia B. N. Yeltsin 19 Mira str. Yekaterinburg 620002 Russian Federation
| | - Grigory V Zyryanov
- Ural Federal University named after the first President of Russia B. N. Yeltsin 19 Mira str. Yekaterinburg 620002 Russian Federation
- I. Ya. Postovskiy Institute of Organic Synthesis, UB of the RAS 22 S. Kovalevskoy Str. Yekaterinburg 620219 Russian Federation
| | - Oleg N Chupakhin
- Ural Federal University named after the first President of Russia B. N. Yeltsin 19 Mira str. Yekaterinburg 620002 Russian Federation
- I. Ya. Postovskiy Institute of Organic Synthesis, UB of the RAS 22 S. Kovalevskoy Str. Yekaterinburg 620219 Russian Federation
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11
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Szymaszek P, Fiedor P, Chachaj-Brekiesz A, Tyszka-Czochara M, Świergosz T, Ortyl J. Molecular interactions of bovine serum albumin (BSA) with pyridine derivatives as candidates for non-covalent protein probes: a spectroscopic investigation. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118262] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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12
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Musikavanhu B, Muthusamy S, Zhu D, Xue Z, Yu Q, Chiyumba CN, Mack J, Nyokong T, Wang S, Zhao L. A simple quinoline-thiophene Schiff base turn-off chemosensor for Hg 2+ detection: spectroscopy, sensing properties and applications. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 264:120338. [PMID: 34482149 DOI: 10.1016/j.saa.2021.120338] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 08/06/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
A new Schiff base probe (QT) consisting of 8-aminoquinoline (Q) and thiophene-2-carboxaldehyde (T) moieties has been synthesized. QT undergoes chelation-enhanced fluorescence quenching when exposed to Hg2+ due to coordination by the sulfur and nitrogen atoms of QT thus forming a facile "turn-off" sensor. The formation of the chelation complex was confirmed by UV-visible absorption and emission spectral measurements, 1H NMR titration and density functional theory calculations. These studies revealed that the probe exhibits high selectivity and sensitivity towards Hg2+ in the presence of other common metal ions. A low detection limit of 23.4 nM was determined and a Job plot confirmed a 2:1 stoichiometry between QT and Hg2+. The potential utility of QT as a sensor for Hg2+ ions in human HeLa cells was determined by confocal fluorescence microscopy, and its suitability for use in the field with environmental samples was tested with Whatman filter paper strips.
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Affiliation(s)
- Brian Musikavanhu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Selvaraj Muthusamy
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Dongwei Zhu
- Department of Immunology, Jiangsu Key Laboratory of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, China; Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang 212013, China
| | - Zhaoli Xue
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Qian Yu
- School of Life Sciences, Jiangsu University, Zhenjiang 212013, PR China.
| | - Choonzo N Chiyumba
- Institute for Nanotechnology Innovation, Department of Chemistry, Rhodes University, Makhanda 6140, South Africa
| | - John Mack
- Institute for Nanotechnology Innovation, Department of Chemistry, Rhodes University, Makhanda 6140, South Africa.
| | - Tebello Nyokong
- Institute for Nanotechnology Innovation, Department of Chemistry, Rhodes University, Makhanda 6140, South Africa
| | - Shengjun Wang
- Department of Immunology, Jiangsu Key Laboratory of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, China; Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang 212013, China
| | - Long Zhao
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
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13
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Gümüşgöz Çelik G, Şenkuytu E, Şahin O, Serin S. The new water-soluble Schiff base derivative fluorometric chemosensor with highly selective and instantly sensitivity for Fe3+ ion detection in aqueous media. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120556] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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14
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Srinivasan V, Khamrang T, Ponraj C, Saravanan D, Yamini R, Bera S, Jhonsi MA. Pyrene based Schiff bases: Synthesis, crystal structure, antibacterial and BSA binding studies. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129153] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Yao Q, Sun R, Bao S, Chen R, Kou L. Bilirubin Protects Transplanted Islets by Targeting Ferroptosis. Front Pharmacol 2020; 11:907. [PMID: 32612533 PMCID: PMC7308534 DOI: 10.3389/fphar.2020.00907] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 06/03/2020] [Indexed: 12/21/2022] Open
Abstract
Islet transplantation is an attractive treatment for type 1 diabetic patients. However, transplanted islets suffered from considerable cell death due to inflammatory reactions and oxidative stress. Ferroptosis is a programmed death characterized by iron-dependent lipid peroxidation, which has been implicated in the islet loss and dysfunction. Our previous studies showed that bilirubin displayed protection effect for islets by inhibiting early inflammation and oxidative stress. However, whether bilirubin protects islets by targeting ferroptosis has not yet been elucidated. Here, the isolated islet was exposed to ferroptosis-inducing agents with or without bilirubin. Islet viability, insulin secretion, and oxidative stress levels were assessed. Subsequently, the pretreated islets were transplanted into the subrenal site of streptozotocin-induced diabetic mice. Bilirubin could significantly attenuate ferroptosis in isolated islets, along with reduced oxidative stress, elevated GPX4 expression and upregulation of Nrf2/HO-1. Experimental data also confirmed that bilirubin could chelate iron. In vivo graft study demonstrated that euglycemia was achieved in diabetic mice receiving bilirubin-pretreated islets within 24 hours, while the control islets required at least 7 days. Bilirubin could improve islet viability and function through inhibiting ferroptosis, which could be of clinic interest to apply bilirubin into the islet transplantation system.
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Affiliation(s)
- Qing Yao
- Department of Pharmacy, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Rui Sun
- Department of Pharmacy, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Shihui Bao
- Department of Pharmacy, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ruijie Chen
- Department of Pharmacy, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Longfa Kou
- Department of Pharmacy, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
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16
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Meng B, Zhang Y, Ma P. Composites with AIEgens for Temperature Sensing and Strain Measurement. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.201900552] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Biwei Meng
- Laboratory of Environmental Science and TechnologyXinjiang Technical Institute of Physics and ChemistryKey Laboratory of Functional Materials and Devices for Special EnvironmentsChinese Academy of Sciences Urumqi 830011 China
- Center of Material and Optoelectronic ResearchUniversity of Chinese Academy of Sciences Beijing 100049 China
| | - Yurong Zhang
- Laboratory of Environmental Science and TechnologyXinjiang Technical Institute of Physics and ChemistryKey Laboratory of Functional Materials and Devices for Special EnvironmentsChinese Academy of Sciences Urumqi 830011 China
- Center of Material and Optoelectronic ResearchUniversity of Chinese Academy of Sciences Beijing 100049 China
| | - Peng‐Cheng Ma
- Laboratory of Environmental Science and TechnologyXinjiang Technical Institute of Physics and ChemistryKey Laboratory of Functional Materials and Devices for Special EnvironmentsChinese Academy of Sciences Urumqi 830011 China
- Center of Material and Optoelectronic ResearchUniversity of Chinese Academy of Sciences Beijing 100049 China
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17
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Wang J, Zhang X, Liu HB, Zhang D, Nong H, Wu P, Chen P, Li D. Aggregation induced emission active fluorescent sensor for the sensitive detection of Hg2+ based on organic-inorganic hybrid mesoporous material. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 227:117585. [PMID: 31734570 DOI: 10.1016/j.saa.2019.117585] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 09/29/2019] [Accepted: 09/30/2019] [Indexed: 06/10/2023]
Abstract
We report the preparation of an organic-inorganic hybrid mesoporous material, PHC-SBA-15, derived from the coupling of a pyrene-based derivative PHC and mesoporous SBA-15 silica. Compared with the stable aggregation-induced emission (AIE) properties of PHC, those of PHC-SBA-15 were more promoted and active due to the fixation of PHC and the space limitation in mesoporous SBA-15. The aggregation and disaggregation activities can be tuned by controlling the concentrations in aqueous media and changing the fluorescence color from yellow to blue. In addition to the controllable AIE properties, PHC-SBA-15 was applied for the highly selective and sensitive detection of Hg2+ through the fluorescence quenching of monomeric pyrene in aqueous media. The fluorescence intensity at 395 nm was linearly proportional to that of Hg2+ in the concentration ranges of 0-1.0 × 10-5 and 1.0 × 10-5-10 × 10-5 M, showing a low detection limit of 1.02 × 10-7 M. This work provides an effective strategy for modulating the AIE properties from non-active to active by introducing AIE stable molecule into mesoporous silica material. This method also favors the development of fluorescent sensors for detecting targets with high sensitivity and selectivity in aqueous media with less synthetic difficulties.
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Affiliation(s)
- Jing Wang
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, PR China.
| | - Xiangmin Zhang
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, PR China
| | - Hai-Bo Liu
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, PR China
| | - Di Zhang
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, PR China
| | - Huiting Nong
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, PR China
| | - Pingyu Wu
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, PR China
| | - Pengxiang Chen
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, PR China
| | - Dong Li
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, PR China
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18
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Espinar-Barranco L, Meazza M, Linares-Perez A, Rios R, Paredes JM, Crovetto L. Synthesis, Photophysics, and Solvatochromic Studies of an Aggregated-Induced-Emission Luminogen Useful in Bioimaging. SENSORS (BASEL, SWITZERLAND) 2019; 19:E4932. [PMID: 31726748 PMCID: PMC6891498 DOI: 10.3390/s19224932] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 11/06/2019] [Accepted: 11/07/2019] [Indexed: 12/29/2022]
Abstract
Biological samples are a complex and heterogeneous matrix where different macromolecules with different physicochemical parameters cohabit in reduced spaces. The introduction of fluorophores into these samples, such as in the interior of cells, can produce changes in the fluorescence emission properties of these dyes, caused by the specific physicochemical properties of cells. This effect can be especially intense with solvatofluorochromic dyes, where changes in the polarity environment surrounding the dye can drastically change the fluorescence emission. In this article, we studied the photophysical behavior of a new dye and confirmed the aggregation-induced emission (AIE) phenomenon with different approaches, such as by using different solvent proportions, increasing the viscosity, forming micelles, and adding bovine serum albumin (BSA), through analysis of the absorption and steady-state and time-resolved fluorescence. Our results show the preferences of the dye for nonpolar media, exhibiting AIE under specific conditions through immobilization. Additionally, this approach offers the possibility of easily determining the critical micelle concentration (CMC). Finally, we studied the rate of spontaneous incorporation of the dye into cells by fluorescence lifetime imaging and observed the intracellular pattern produced by the AIE. Interestingly, different intracellular compartments present strong differences in fluorescence intensity and fluorescence lifetime. We used this difference to isolate different intracellular regions to selectively study these regions. Interestingly, the fluorescence lifetime shows a strong difference in different intracellular compartments, facilitating selective isolation for a detailed study of specific organelles.
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Affiliation(s)
- Laura Espinar-Barranco
- Department of Physical Chemistry, University of Granada, Unidad de Excelencia en Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Cartuja Campus, 18071 Granada, Spain;
| | - Marta Meazza
- School of Chemistry, University of Southampton, Highfield Campus, Southampton SO17 1BJ, UK; (M.M.); (R.R.)
| | - Azahara Linares-Perez
- Department of Biochemistry and Molecular Biology II, Faculty of Pharmacy, University of Granada, Cartuja Campus, 18071 Granada, Spain;
| | - Ramon Rios
- School of Chemistry, University of Southampton, Highfield Campus, Southampton SO17 1BJ, UK; (M.M.); (R.R.)
| | - Jose Manuel Paredes
- Department of Physical Chemistry, University of Granada, Unidad de Excelencia en Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Cartuja Campus, 18071 Granada, Spain;
| | - Luis Crovetto
- Department of Physical Chemistry, University of Granada, Unidad de Excelencia en Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Cartuja Campus, 18071 Granada, Spain;
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19
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Zhang T, Chu S, Lin L, Wang CZ, Gong G, Song X, Fan J, Zhuo S. Substitution induced tunable emission of an airplane-like pyrene-based fluorophore: First-principles study. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.136726] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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