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Pal M, Upadhyay A, Masarkar N, Bera A, Mukherjee S, Roy M. Folate-assisted targeted photocytotoxicity of red-light-activable iron(III) complex co-functionalized gold nanoconjugates (Fe@FA-AuNPs) against HeLa and triple-negative MDA-MB-231 cancer cells. Dalton Trans 2024; 53:2108-2119. [PMID: 38180438 DOI: 10.1039/d3dt03581f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Photo-redox chemistry resulting from ligand to metal charge transfer in red-light-activable iron(III) complexes could be a potent strategic tool for next-generation photochemotherapeutic applications. Herein, we developed an iron(III) complex and folate co-functionalized gold nanoconjugate (Fe@FA-AuNPs) and thoroughly characterized it with NMR, ESI MS, UV-visible, EPR, EDX, XPS, powder X-ray diffraction, TEM and DLS studies. There was a remarkable shift in the SPR band of AuNPs to 680 nm, and singlet oxygen (1O2) and hydroxyl radicals were potently generated upon red-light activation, which were probed by UV-visible and EPR spectroscopic assays. Cellular uptake studies of the nanoconjugate (Fe@FA-AuNPs) revealed significantly higher uptake in folate(+) cancer cells (HeLa and MDA-MB-231) than folate(-) (A549) cancer cells or normal cells (HPL1D), indicating the targeting potential of the nanoconjugate. Confocal imaging indicated primarily mitochondrial localization. The IC50 values of the nanoconjugate determined from a cell viability assay in HeLa, MDA-MB-231, and A549 cells were 27.83, 39.91, and 69.54 μg mL-1, respectively in red light, while in the dark the values were >200 μg mL-1; the photocytotoxicity was correlated with the cellular uptake of the nanoconjugate. The nanocomposite exhibited similar photocytotoxicity (IC50 in red light, 37.35 ± 8.29 μg mL-1 and IC50 in the dark, >200 μg mL-1). Mechanistic studies revealed that intracellular generation of ROS upon red-light activation led to apoptosis in HeLa cells. Scratch-wound-healing assays indicated the inhibition of the migration of MDA-MB-231 cells treated with the nanoconjugate and upon photo-activation. Overall, the nanoconjugate has emerged as a potent tool for next-generation photo-chemotherapeutics in the clinical arena of targeted cancer therapy.
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Affiliation(s)
- Maynak Pal
- Department of Chemistry, National Institute of Technology Manipur, Langol 795004, Imphal (Manipur), India.
| | - Aarti Upadhyay
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Neha Masarkar
- Department of Biochemistry, All India Institute of Medical Science (AIIMS), Saket Nagar, Bhopal, Madhya Pradesh, 462026, India
| | - Arpan Bera
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Sukhes Mukherjee
- Department of Biochemistry, All India Institute of Medical Science (AIIMS), Saket Nagar, Bhopal, Madhya Pradesh, 462026, India
| | - Mithun Roy
- Department of Chemistry, National Institute of Technology Manipur, Langol 795004, Imphal (Manipur), India.
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Tong KM, Toigo J, Patrick BO, Wolf MO. Rhenium(I) Complexes with Sulfur-Bridged Dipyridyl Ligands: Structural, Photophysical, and Computational Studies. Inorg Chem 2023; 62:13662-13671. [PMID: 37555810 DOI: 10.1021/acs.inorgchem.3c02124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
A series of six new rhenium(I) tricarbonyl complexes [Re(CO)3(N-N)Br] bearing sulfur-bridged dipyridyl (N-N) ligands with three different oxidation states (sulfide (S), sulfoxide (SO), and sulfone (SO2)) are described. Spectroscopic studies show that changing the oxidation state of the ligands influences the photophysical properties of the complexes, with complexes 3 and 6 containing the sulfone ligand exhibiting a lower energy MLCT absorption band tailing into the visible region. Solution-state emission measurements show that these complexes exhibit readily tunable emission energies from 480 to 610 nm, depending on the oxidation state of the sulfur bridge and the presence of substituents on the pyridyl rings. Solid-state emission measurements show that the emission is significantly red-shifted upon oxidation of the sulfur bridge to sulfone with enhanced photoluminescence quantum yield.
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Affiliation(s)
- Ka-Ming Tong
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Jessica Toigo
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Brian O Patrick
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Michael O Wolf
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
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Zhang GG, Duan XY, Zhao Y, Wei M. Three Proton‐conductors Based‐on Keggin‐type Polyoxometalates Well‐arranged in the Networks of Dinuclear‐Cu(II)‐mixed‐organic‐ligand Clusters. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Guang-Guang Zhang
- Henan Normal University School of Chemistry and Chemical Engineering CHINA
| | | | - Yan Zhao
- Henan Normal University School of Chemistry and Chemical Engineering CHINA
| | - Meilin Wei
- - - 46# East of Construction Road 453007 Xinxiang CHINA
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Schutte-Smith M, Visser HG. Crystal and molecular structures of fac-[Re(Bid)(PPh 3)(CO) 3] [Bid is tropolone (TropH) and tribromotropolone (TropBr 3H)]. Acta Crystallogr C Struct Chem 2022; 78:351-359. [PMID: 35662135 PMCID: PMC9167630 DOI: 10.1107/s205322962200465x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 05/02/2022] [Indexed: 11/10/2022] Open
Abstract
Two rhenium complexes, namely, fac-tricarbonyl(triphenylphosphane-κP)(tropolonato-κ2O,O')rhenium(I), [Re(C7H5O2)(C18H15P)(CO)3] or fac-[Re(Trop)(PPh3)(CO)3] (1), and fac-tricarbonyl(3,5,7-tribromotropolonato-κ2O,O')(triphenylphosphane-κP)rhenium(I), [Re(C7H2Br3O2)(C18H15P)(CO)3] or fac-[Re(TropBr3)(PPh3)(CO)3] (2) (TropH is tropolone and and TropBr3H is tribromotropolone), were synthesized and their crystal and molecular structures confirmed by single-crystal X-ray diffraction. Both crystallized in the space group P-1 and display an array of inter- and intramolecular interactions which were confirmed by solid-state 13C NMR spectroscopy using cross polarization magic angle spinning (CPMAS) techniques, as well as Hirshfeld surface analysis. The slightly longer Re-P distance of 1 [2.4987 (5) versus 2.4799 (11) Å for 1 and 2, respectively] suggests stronger back donation from the carbonyl groups in the former case, possibly due to the stronger electron-donating ability of the unsubstituted tropolonate ring system. However, this is not supported in the Re-CO bond distances of 1 and 2.
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Affiliation(s)
- Marietjie Schutte-Smith
- Department of Chemistry, University of the Free State, PO Box 339, Bloemfontein 9301, South Africa
| | - Hendrik Gideon Visser
- Department of Chemistry, University of the Free State, PO Box 339, Bloemfontein 9301, South Africa
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Pal M, Ramu V, Musib D, Kunwar A, Biswas A, Roy M. Iron(III) Complex-Functionalized Gold Nanocomposite as a Strategic Tool for Targeted Photochemotherapy in Red Light. Inorg Chem 2021; 60:6283-6297. [PMID: 33887143 DOI: 10.1021/acs.inorgchem.1c00001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Iron(III)-phenolate/carboxylate complexes exhibiting photoredox chemistry and photoactivated reactive oxygen species (ROS) generation at their ligand-to-metal charge-transfer (LMCT) bands have emerged as potential strategic tools for photoactivated chemotherapy. Herein, the synthesis, in-depth characterization, photochemical assays, and remarkable red light-induced photocytotoxicities in adenocarcinomic human immortalized human keratinocytes (HaCaT) and alveolar basal epithelial (A549) cells of iron(III)-phenolate/carboxylate complex of molecular formula, [Fe(L1)(L2)] (1), where L1 is bis(3,5 di-tert-butyl-2-hydroxybenzyl)glycine and L2 is 5-(1,2-dithiolan-3-yl)-N-(1,10-phenanthroline-5-yl)pentanamide, and the gold nanocomposite functionalized with complex 1 (1-AuNPs) are reported. There was a significant red shift in the UV-visible absorption band on functionalization of complex 1 to the gold nanoparticles (λmax: 573 nm, 1; λmax: 660 nm, 1-AuNPs), rendering the nanocomposite an ideal candidate for photochemotherapeutic applications. The notable findings in our present studies are (i) the remarkable cytotoxicity of the nanocomposite (1-AuNPs) to A549 (IC50: 0.006 μM) and HaCaT (IC50: 0.0075 μM) cells in red light (600-720 nm, 30 J/cm2) while almost nontoxic (IC50 > 500 μg/mL, 0.053 μM) in the dark, (ii) the nontoxicity of 1-AuNPs to normal human diploid fibroblasts (WI-38) or human peripheral lung epithelial (HPL1D) cells (IC50 > 500 μg/mL, 0.053 μM) both in the dark and red light signifying the target-specific anticancer activity of the nanocomposite, (iii) localization of 1-AuNPs in mitochondria and partly nucleus, (iv) remarkable red light-induced generation of reactive oxygen species (ROS: 1O2, •OH) in vitro, (v) disruption of the mitochondrial membrane due to enhanced oxidative stress, and (vi) caspase 3/7-dependent apoptosis. A similar cytotoxic profile of complex 1 was another key finding of our studies. Overall, our current investigations show a new red light-absorbing iron(III)-phenolate/carboxylate complex-functionalized gold nanocomposite (1-AuNPs) as the emerging next-generation iron-based photochemotherapeutic agent for targeted cancer treatment modality.
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Affiliation(s)
- Maynak Pal
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal West 795004, India
| | - Vanitha Ramu
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, CV Raman Avenue, Bangalore 560012, India
| | - Dulal Musib
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal West 795004, India
| | - Amit Kunwar
- Radiation and Photochemistry Division, Bhaba Atomic Research Center, Anushaktinagar, Mumbai 400085, India
| | - Arunima Biswas
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal West 795004, India
| | - Mithun Roy
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal West 795004, India
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Chow CF. Biogenic amines- and sulfides-responsive gold nanoparticles for real-time visual detection of raw meat, fish, crustaceans, and preserved meat. Food Chem 2020; 311:125908. [DOI: 10.1016/j.foodchem.2019.125908] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 11/13/2019] [Accepted: 11/13/2019] [Indexed: 10/25/2022]
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7
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Quintana C, Cifuentes MP, Humphrey MG. Transition metal complex/gold nanoparticle hybrid materials. Chem Soc Rev 2020; 49:2316-2341. [PMID: 32149284 DOI: 10.1039/c9cs00651f] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Gold nanoparticles (AuNPs) are of considerable interest for diverse applications in areas such as medicine, catalysis, and sensing. AuNPs are generally surface-stabilized by organic matrices and coatings, and while the resultant organic compound (OC)/AuNP hybrids have been explored extensively, they are not suitable for certain applications (e.g. those necessitating reversible redox behaviour and/or long excited-state lifetimes), and they often suffer from low photo- and/or thermal stability. Transition metal complex (TMC)/AuNP hybrids have recently come to the fore as they circumvent some of the aforementioned shortcomings with OC/AuNP hybrids. This review summarizes progress thus far in the nascent field of TMC/AuNP hybrids. The structure and composition of extant TMC/AuNP hybrids are briefly reviewed and the range of TMCs employed in the shell of the hybrids are summarized, the one-phase, two-phase, and post-nanoparticle-synthesis synthetic methods to TMC/AuNP hybrids are discussed and contrasted, highlighting the advantages of variants of the last-mentioned procedure, and the utility of the various characterization techniques is discussed, emphasizing the need to employ multiple techniques in concert. Applications of TMC/AuNP hybrids in luminescence, electrochemical, and electro-optical sensing are described and critiqued, and their uses and potential in imaging, photo-dynamic therapy, nonlinear optics, and catalysis are assessed.
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Affiliation(s)
- Cristóbal Quintana
- Research School of Chemistry, Australian National University, Canberra ACT 2601, Australia.
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Yang H, Duan XY, Lai JJ, Zhao Y, Wang XJ, Wei ML. Proton-Conductive Cocrystals of Twin Isomers of Coordination Polymers in Situ Formed by Keggin Anions and Cu(II)–4,4′-Bis(hydroxymethyl)-2,2′-bipyridine Complex Moieties. Inorg Chem 2018; 58:446-455. [DOI: 10.1021/acs.inorgchem.8b02665] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hui Yang
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, P. R. China
| | - Xian-Ying Duan
- Institute of Chemistry, Henan Academy of Sciences, Zhengzhou 450002, P. R. China
| | - Jia-Jia Lai
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, P. R. China
| | - Yan Zhao
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, P. R. China
| | - Xin-Jun Wang
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, P. R. China
| | - Mei-Lin Wei
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, P. R. China
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9
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Govindarajan R, Divya D, Nagarajaprakash R, Manimaran B. Synthesis and Characterization of Aminoquinonato Bridged Re(I)-Based Amide Functionalized Dinuclear Metallastirrups and Tetranuclear Lemniscate Metallacycles. ChemistrySelect 2018. [DOI: 10.1002/slct.201800296] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - Dhanaraj Divya
- Department of Chemistry; Pondicherry University; Puducherry 605014 India
| | | | - Bala. Manimaran
- Department of Chemistry; Pondicherry University; Puducherry 605014 India
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10
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Nakada A, Ishitani O. Selective Electrocatalysis of a Water-Soluble Rhenium(I) Complex for CO2 Reduction Using Water As an Electron Donor. ACS Catal 2017. [DOI: 10.1021/acscatal.7b03275] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Akinobu Nakada
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-1, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Osamu Ishitani
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-1, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
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11
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Emission tuning in Re(I) complexes: Expanding heterocyclic ligands and/or introduction of perfluorinated ligands. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.08.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Karthikeyan M, Govindarajan R, Duraisamy E, Veena V, Sakthivel N, Manimaran B. Self-Assembly of Chalcogenolato-Bridged Ester and Amide Functionalized Dinuclear Re(I) Metallacycles: Synthesis, Structural Characterization and Preliminary Cytotoxicity Studies. ChemistrySelect 2017. [DOI: 10.1002/slct.201700646] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | | | | | - Vijayakumar Veena
- Department of Biotechnology; Pondicherry University; Puducherry 605014 India
| | - Natarajan Sakthivel
- Department of Biotechnology; Pondicherry University; Puducherry 605014 India
| | - Bala. Manimaran
- Department of Chemistry; Pondicherry University; Puducherry 605014 India
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13
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Zhang S, Zhang Z, Fu H, Li X, Zhan H, Cheng Y. Synthesis of polyfluorene containing simple functional end group with aryl palladium(II) complexes as initiators. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.10.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Vilvamani N, Chhatwal M, Bhowmick I, Gupta RD, Awasthi SK. Gold nanocomposite assemblies using functionalized Ru(ii)-polypyridyl complexes. RSC Adv 2016. [DOI: 10.1039/c6ra11516k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ru(ii)-polypyridyl complexes with various surface anchoring functional groups were prepared and utilized as capping and engineering agents to attain surface functionalized gold nanocomposites (Au NCs) with unique morphologies.
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Affiliation(s)
| | - Megha Chhatwal
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
| | - Indrani Bhowmick
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
| | - Rinkoo Devi Gupta
- Faculty of Life Sciences and Biotechnology
- South Asian University
- New Delhi-110021
- India
| | - Satish Kumar Awasthi
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
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15
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Leung FC, Au VK, Song H, Yam VW. Dual Esterase‐ and Steroid‐Responsive Energy Transfer Modulation of Ruthenium(II) and Rhenium(I) Complex Functionalized Gold Nanoparticles. Chemistry 2015; 21:16448-54. [DOI: 10.1002/chem.201501808] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Frankie Chi‐Ming Leung
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR (P. R. China)
| | - Vonika Ka‐Man Au
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR (P. R. China)
| | - Hai‐Ou Song
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR (P. R. China)
| | - Vivian Wing‐Wah Yam
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR (P. R. China)
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16
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Wu Z, Mu J, Wang Q, Chen X, Jensen L, Yi C, Li MJ. Hydroxyl and amino functionalized cyclometalated Ir(III) complexes: Synthesis, characterization and cytotoxicity studies. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.05.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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17
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Wang Q, Hu W, Feng Q, Cao XH, Chai W, Yi C, Li MJ. Coumarin-modified gold nanoprobes for the sensitive detection of caspase-3. RSC Adv 2015. [DOI: 10.1039/c5ra05350a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
A coumarin-functionalized gold nanosensor connected to polypeptide chains was developed for the sensitive detection of caspase-3 based on a FRET process.
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Affiliation(s)
- Qiong Wang
- Key Laboratory of Analysis and Detection Technology for Food Safety
- Ministry of Education
- Fujian Provincial Key Laboratory of Analysis & Detection Technology for Food Safety
- Department of Chemistry
- Fuzhou University
| | - Wenqin Hu
- Key Laboratory of Analysis and Detection Technology for Food Safety
- Ministry of Education
- Fujian Provincial Key Laboratory of Analysis & Detection Technology for Food Safety
- Department of Chemistry
- Fuzhou University
| | - Qingyue Feng
- Key Laboratory of Analysis and Detection Technology for Food Safety
- Ministry of Education
- Fujian Provincial Key Laboratory of Analysis & Detection Technology for Food Safety
- Department of Chemistry
- Fuzhou University
| | - Xiu-Hui Cao
- Key Laboratory of Analysis and Detection Technology for Food Safety
- Ministry of Education
- Fujian Provincial Key Laboratory of Analysis & Detection Technology for Food Safety
- Department of Chemistry
- Fuzhou University
| | - Weiwei Chai
- Key Laboratory of Analysis and Detection Technology for Food Safety
- Ministry of Education
- Fujian Provincial Key Laboratory of Analysis & Detection Technology for Food Safety
- Department of Chemistry
- Fuzhou University
| | - Changqing Yi
- Key Laboratory of Sensing Technology and Biomedical Instruments (Guangdong Province)
- School of Engineering
- Sun Yat-Sen University
- Guangzhou 510006
- P.R. China
| | - Mei-Jin Li
- Key Laboratory of Analysis and Detection Technology for Food Safety
- Ministry of Education
- Fujian Provincial Key Laboratory of Analysis & Detection Technology for Food Safety
- Department of Chemistry
- Fuzhou University
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18
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Zheng ZB, Wu YQ, Wang KZ, Li F. pH luminescence switching, dihydrogen phosphate sensing, and cellular uptake of a heterobimetallic ruthenium(II)-rhenium(I) complex. Dalton Trans 2014; 43:3273-84. [PMID: 24356444 DOI: 10.1039/c3dt52568f] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A new heterobimetallic ruthenium(II)-rhenium(I) complex of [Ru(bpy)2(HL)Re(CO)3Cl](ClO4)2·6H2O (RuHLRe) {bpy = 2,2'-bipyridine and HL = 2-(4-(2,6-di(pyridin-2-yl)pyridin-4-yl)phenyl)-1H-imidazo[4,5-f][1,10]phenanthroline} was synthesised and characterised by elemental analysis, proton nuclear magnetic resonance spectroscopy, and mass spectrometry. The ground- and excited-state acid-base properties of RuHLRe were studied using UV-Vis absorption spectrophotometric and spectrofluorimetric titrations in a 100 : 1 (v/v) Britton-Robinson buffer-CH3CN solution combined with luminescence lifetime measurements. The complex exhibited two-step separate protonation-deprotonation processes in both the ground and excited states. The complex acted as pH-induced "off-on-off" luminescence switches (I(on)/I(off) = 31.0 and 14.6), with one of the switching actions being driven by pH variations over the physiological pH range (5.3-8.0). Importantly, cellular imaging and cytotoxicity experiments demonstrated that RuHLRe rapidly and selectively illuminated the membrane of HeLa cells over fixed cells and exhibited reduced cytotoxicity at the imaging concentration compared to the Re(I)-free parent Ru(II) complex. In addition, RuHLRe acted as an efficient "turn on" emission sensor for H2PO4(-) and "turn off" emission sensor for F(-) and OAc(-).
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Affiliation(s)
- Ze-Bao Zheng
- College of Chemistry, Beijing Normal University, Beijing Key Laboratory of Energy Conversion and Storage Materials, Beijing 100875, P.R. China
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19
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Li MJ, Lan TY, Lin ZS, Yi C, Chen GN. Synthesis, characterization, and DNA binding of a novel ligand and its Cu (II) complex. J Biol Inorg Chem 2014; 18:993-1003. [PMID: 24077729 DOI: 10.1007/s00775-013-1048-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Accepted: 09/04/2013] [Indexed: 11/28/2022]
Abstract
A novel naphthalene-2,3-diamine-2-salicylaldehyde (NS) ligand and its mononuclear copper(II) complex (CuNS) have been synthesized and structurally characterized. The UV–vis absorption and emission spectra of NS showed obvious changes on addition of Cu2+ solution. The interaction of the compounds with calf thymus DNA and G-quadruplex DNA were investigated by spectroscopic methods and thermal melting assay. The nucleolytic cleavage activity of the compounds was investigated on double-stranded circular pBR322 plasmid DNA and G-quadruplex DNA by electrophoretic mobility shift assay. The results show that CuNS has a greater ability to stabilize G-quadruplex DNA over calf-thymus DNA. The cytotoxicity of the compounds toward HpeG2 cancer cells was also studied, and they showed significant potential for antineoplastic effects.
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Hallett AJ, Broomfield M, Christian P, Pope SJA. Silver nanoparticles functionalised with a luminescent iridium complex: phosphorescent hybrid materials. TRANSIT METAL CHEM 2013. [DOI: 10.1007/s11243-013-9789-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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21
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Bullock S, Hallett AJ, Harding LP, Higginson JJ, Piela SAF, Pope SJA, Rice CR. Luminescent rhenium fac-tricarbonyl-containing complexes of androgenic oxo-steroids. Dalton Trans 2013; 41:14690-6. [PMID: 23059830 DOI: 10.1039/c2dt31476b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A new route to luminescent derivatives of androgenic steroids containing a ketone group in the 3- or 17-position has been developed. Reaction with the fac-Re(CO)(3)Cl complex of 3,3'-diamino-2,2'-bipyridine (complex 1) afforded a cyclic aminal product with different steroids. The rate of reaction and yield varies according to the conjugation or steric hindrance around the ketone group.
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Affiliation(s)
- Sam Bullock
- Department of Chemical & Biological Sciences, University of Huddersfield, Queensgate, Huddersfield, West Yorks, UK
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Yu L, Wu Y, Chen T, Pan Y, Xu Q. Direct Synthesis of Methylene-1,2-dichalcogenolanes via Radical [3 + 2] Cycloaddition of Methylenecyclopropanes with Elemental Chalcogens. Org Lett 2012; 15:144-7. [DOI: 10.1021/ol3031846] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lei Yu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China, and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210089, China
| | - Yulan Wu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China, and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210089, China
| | - Tian Chen
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China, and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210089, China
| | - Yi Pan
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China, and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210089, China
| | - Qing Xu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China, and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210089, China
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