51
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Li Y, Li Y, Liu X, Yang Y, Lin D, Gao Q. The synthesis, characterization, DNA/protein interaction, molecular docking and catecholase activity of two Co(II) complexes constructed from the aroylhydrazone ligand. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127229] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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52
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Hanif M, Hartinger CG. From the hypothesis-driven development of organometallic anticancer drugs to new methods in mode of action studies. Med Chem 2020. [DOI: 10.1016/bs.adioch.2019.10.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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53
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Mandal S, Sen T, Mandal U, Bhunia D, Rizzoli C, Bandyopadhyay D. Synthesis, crystal structure and antibacterial activity of manganese(III) and cobalt(III) complexes containing pentadentate Schiff bases of a common amine and thiocyanate. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1704275] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Santanu Mandal
- Department of Chemistry, Bankura Christian College, Bankura, West Bengal, India
| | - Tinku Sen
- Department of Chemistry, Bankura Christian College, Bankura, West Bengal, India
| | - Uttam Mandal
- Department of Physics, Bankura Sammilani College, Bankura, West Bengal, India
| | - Dipankar Bhunia
- Department of Chemistry, Bankura Christian College, Bankura, West Bengal, India
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de Mello MVP, Cebrián-Torrejón G, Pereira JR, dos Santos Moreira C, Gomes CBDSMR, da Rocha DR, de Souza Fagundes EM, Ferreira GB, Lanznaster M. Evaluation of 5-hydroxy-1,4-naphthoquinone-cobalt(III) complexes for hypoxia-activated drug delivery. J Inorg Biochem 2019; 199:110756. [DOI: 10.1016/j.jinorgbio.2019.110756] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 06/23/2019] [Accepted: 06/24/2019] [Indexed: 12/30/2022]
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55
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Areas ES, de Assunção Paiva JL, Ribeiro FV, Pereira TM, Kummerle AE, Silva H, Guedes GP, Cellis do Nascimento AC, da Silva Miranda F, Neves AP. Redox-Activated Drug Delivery Properties and Cytotoxicity of Cobalt Complexes Based on a Fluorescent Coumarin-β-Keto Ester Hybrid. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900734] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Esther Saraiva Areas
- Instituto de Química; Universidade Federal Rural do Rio de Janeiro; BR-465, Km 7 Seropédica CEP 23890-000 Rio de Janeiro Brasil
| | | | - Felipe Vitório Ribeiro
- Instituto de Química; Universidade Federal Rural do Rio de Janeiro; BR-465, Km 7 Seropédica CEP 23890-000 Rio de Janeiro Brasil
| | - Thiago Moreira Pereira
- Instituto de Química; Universidade Federal Rural do Rio de Janeiro; BR-465, Km 7 Seropédica CEP 23890-000 Rio de Janeiro Brasil
| | - Arthur Eugen Kummerle
- Instituto de Química; Universidade Federal Rural do Rio de Janeiro; BR-465, Km 7 Seropédica CEP 23890-000 Rio de Janeiro Brasil
| | - Heveline Silva
- Departamento de Química; Universidade Federal de Minas Gerais; Av. Antônio Carlos, 6627 - Pampulha Belo Horizonte Minas Gerais CEP 31270-901 Brasil
| | - Guilherme Pereira Guedes
- Instituto de Química; Universidade Federal Fluminense; Campus do Valonguinho, Centro, Niterói Rio de Janeiro CEP 24020-150 Brasil
| | | | - Fabio da Silva Miranda
- Instituto de Química; Universidade Federal Fluminense; Campus do Valonguinho, Centro, Niterói Rio de Janeiro CEP 24020-150 Brasil
| | - Amanda Porto Neves
- Instituto de Química; Universidade Federal Rural do Rio de Janeiro; BR-465, Km 7 Seropédica CEP 23890-000 Rio de Janeiro Brasil
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56
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A multi-technique investigation of a new macroacyclic Schiff base ligand and its Cd(II), Zn(II) and Cu(II) complexes. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.05.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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57
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Miao Q, Liu WM, Kock T, Blok A, Timmer M, Overhand M, Ubbink M. A Double-Armed, Hydrophilic Transition Metal Complex as a Paramagnetic NMR Probe. Angew Chem Int Ed Engl 2019; 58:13093-13100. [PMID: 31314159 PMCID: PMC6771572 DOI: 10.1002/anie.201906049] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 07/15/2019] [Indexed: 01/20/2023]
Abstract
Synthetic metal complexes can be used as paramagnetic probes for the study of proteins and protein complexes. Herein, two transition metal NMR probes (TraNPs) are reported. TraNPs are attached through two arms to a protein to generate a pseudocontact shift (PCS) using cobalt(II), or paramagnetic relaxation enhancement (PRE) with manganese(II). The PCS analysis of TraNPs attached to three different proteins shows that the size of the anisotropic component of the magnetic susceptibility depends on the probe surroundings at the surface of the protein, contrary to what is observed for lanthanoid‐based probes. The observed PCS are relatively small, making cobalt‐based probes suitable for localized studies, such as of an active site. The obtained PREs are stronger than those obtained with nitroxide spin labels and the possibility to generate both PCS and PRE offers advantages. The properties of TraNPs in comparison with other cobalt‐based probes are discussed.
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Affiliation(s)
- Qing Miao
- Gorlaeus Laboratories, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Wei-Min Liu
- Department of Chemistry, Fu Jen Catholic University, No. 510, Zhongzheng Rd., Xinzhuang Dist., New, Taipei City, 24205, Taiwan
| | - Thomas Kock
- Gorlaeus Laboratories, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Anneloes Blok
- Gorlaeus Laboratories, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Monika Timmer
- Gorlaeus Laboratories, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Mark Overhand
- Gorlaeus Laboratories, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Marcellus Ubbink
- Gorlaeus Laboratories, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
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58
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Miao Q, Liu W, Kock T, Blok A, Timmer M, Overhand M, Ubbink M. A Double‐Armed, Hydrophilic Transition Metal Complex as a Paramagnetic NMR Probe. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Qing Miao
- Gorlaeus Laboratories Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Wei‐Min Liu
- Department of Chemistry Fu Jen Catholic University No. 510, Zhongzheng Rd., Xinzhuang Dist., New Taipei City 24205 Taiwan
| | - Thomas Kock
- Gorlaeus Laboratories Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Anneloes Blok
- Gorlaeus Laboratories Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Monika Timmer
- Gorlaeus Laboratories Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Mark Overhand
- Gorlaeus Laboratories Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Marcellus Ubbink
- Gorlaeus Laboratories Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
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59
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Das D, Banaspati A, Das N, Bora B, Raza MK, Goswami TK. Visible light-induced cytotoxicity studies on Co(ii) complexes having an anthracene-based curcuminoid ligand. Dalton Trans 2019; 48:12933-12942. [PMID: 31393480 DOI: 10.1039/c9dt01576k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Herein, two ternary cobalt(ii) complexes, namely [Co(9-accm)(phen)2](OAc) (1) and [Co(9-accm)(dppz)2](OAc) (2), where 9-accmH is 1,7-(di-9-anthracene-1,6-heptadiene-3,5-dione), phen is 1,10-phenanthroline and dppz is dipyrido[3,2-a:2',3'-c]phenazine, having an anthracene-based curcuminoid and phenanthroline bases were synthesized and fully characterized, and their in vitro photocytotoxicities were studied in cancer cells. To understand the role of the curcuminoid ligand 9-accm in photo-activated cytotoxicity, two control complexes, viz. [Co(dbm)(phen)2](OAc) (3) and [Co(dbm)(dppz)2](OAc) (4), where dbmH is 1,3-diphenyl-1,3-propanedione (dibenzoylmethane), were prepared and used for the control experiments. Complex 3 was structurally characterized by X-ray crystallography. The complexes displayed a quasi-reversible Co(i)/Co(ii) redox couple at ∼-1.1 V and an irreversible Co(ii)/Co(iii) couple at ∼1.3 V vs. Ag/AgCl in DMF-0.1 M [Bun4N](ClO4). Highly intense 9-accm ligand-centred bands were observed at ∼250-450 nm, which masked the Co(ii)-based weak d-d bands in the DMF-Tris-HCl buffer (1 : 9 v/v). The complexes displayed a significant binding propensity for calf-thymus (ct) DNA with binding constants in the range from (2.42 ± 0.10) × 105 to (3.24 ± 0.13) × 106 M-1. They also showed a moderate binding affinity for human serum albumin (HSA), displaying Kb values in the order of ∼104-105 M-1. The complexes 1 and 2 showed prodigious photoenhanced cytotoxicity in human cervical cancer (HeLa) and breast cancer (MCF-7 and MDA-MB-231) cells with low dark toxicity, whereas they were non-toxic to immortalized lung epithelial normal cells (HPL1D). Flow cytometric studies showed a time-dependent uptake of the complexes 1 and 2 in HeLa cells. The complexes generated reactive oxygen species (ROS) upon excitation with low energy visible light, thereby killing the cancer cells. The results from DAPI staining, AO/EB dual staining and Annexin-V-FITC experiments suggested that the complexes induce cell death primarily via an apoptotic mechanism in HeLa cells.
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Affiliation(s)
- Dhananjay Das
- Department of Chemistry, Gauhati University, Guwahati 781014, Assam, India.
| | - Atrayee Banaspati
- Department of Chemistry, Gauhati University, Guwahati 781014, Assam, India.
| | - Namisha Das
- Department of Chemistry, Gauhati University, Guwahati 781014, Assam, India.
| | - Bidisha Bora
- Department of Chemistry, Gauhati University, Guwahati 781014, Assam, India.
| | - Md Kausar Raza
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India.
| | - Tridib K Goswami
- Department of Chemistry, Gauhati University, Guwahati 781014, Assam, India.
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60
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King AP, Gellineau HA, MacMillan SN, Wilson JJ. Physical properties, ligand substitution reactions, and biological activity of Co(iii)-Schiff base complexes. Dalton Trans 2019; 48:5987-6002. [PMID: 30672949 PMCID: PMC6504617 DOI: 10.1039/c8dt04606a] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Four cobalt(iii) complexes of the general formula [Co(Schiff base)(L)2]+, where L is ammonia (NH3) or 3-fluorobenzylamine (3F-BnNH2), were synthesized. The complexes were characterized by NMR spectroscopy, mass spectrometry, and X-ray crystallography. Their electrochemical properties, ligand substitution mechanisms, and ligand exchange rates in aqueous buffer were investigated. These physical properties were correlated to the cellular uptake and anticancer activities of the complexes. The complexes undergo sequential, dissociative ligand substitution, with the exchange rates depending heavily on the axial ligands. Eyring analyses revealed that the relative ligand exchange rates were largely impacted by differences in the entropy, rather than enthalpy, of activation for the complexes. Performing the substitution reactions in the presence of ascorbate led to a change in the reaction profile and kinetics, but no change in the final product. The cytotoxic activity of the complexes correlates with both the ligand exchange rate and reduction potential, with the more easily reduced and rapidly substituted complexes showing higher toxicity. These relationships may be valuable for the rational design of Co(iii) complexes as anticancer or antiviral prodrugs.
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Affiliation(s)
- A Paden King
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA.
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61
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García M, Romero I, Portilla J. Synthesis of Fluorescent 1,7-Dipyridyl-bis-pyrazolo[3,4- b:4',3'- e]pyridines: Design of Reversible Chemosensors for Nanomolar Detection of Cu 2. ACS OMEGA 2019; 4:6757-6768. [PMID: 31459798 PMCID: PMC6648379 DOI: 10.1021/acsomega.9b00226] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 03/27/2019] [Indexed: 05/20/2023]
Abstract
An efficient access toward novel tridentate ligands based on 1,7-dipyridinyl-substituted bis-pyrazolo[3,4-b:4',3'-e]pyridines (BPs) and their usefulness as fluorescent probes for cation detection is reported. The synthesis proceeds by a three-step sequence starting from 2-chloropyridine (1), all reactions were performed using microwave radiation under solvent-free conditions, and an overall yield of up to 63% was obtained. Photophysical properties of three representative 1,7-dipyridinyl-BPs (PBPs, 6a-6c) substituted at position 4 with different donor (D) or acceptor (A) groups were investigated. Compounds exhibited large Stokes shift in different solvents and strong blue light emission in both solution and solid state, and quantum yields were as high as 88% for some of them; thus, a twisted intramolecular charge transfer (TICT) fluorescence mechanism characteristic of the 1,4,7-triaryl-BPs was confirmed. The 4-phenyl-substituted probe (Ph-PBP, 6b) was used successfully in the detection of some metals (Cu2+, Co2+, Ni2+, and Hg2+) by fluorescence quenching phenomena, which could be reversed in the presence of ethylenediamine. This probe showed a greater sensitivity toward Cu2+ in concentrations as low as 26 nM, and in the process of "on-off-on" for this fluorescent molecular switch, only 1 equiv of the analyte was used.
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62
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da Silva AFM, de Mello MVP, Gómez JG, Ferreira GB, Lanznaster M. Investigation of Cobalt(III)-Tetrachlorocatechol Complexes as Models for Catechol-Based Anticancer Prodrugs. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801550] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
| | | | - Javier G. Gómez
- Instituto de Química; Universidade Federal Fluminense; Outeiro S J Batista SN 24020-141 Niteroi RJ Brazil
| | - Glaucio Braga Ferreira
- Instituto de Química; Universidade Federal Fluminense; Outeiro S J Batista SN 24020-141 Niteroi RJ Brazil
| | - Mauricio Lanznaster
- Instituto de Química; Universidade Federal Fluminense; Outeiro S J Batista SN 24020-141 Niteroi RJ Brazil
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63
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Benabdallah J, Setifi Z, Setifi F, Boughzala H, Titi A. Crystal structure of tris-(2,2'-bi-pyridine)-cobalt(II) bis-(1,1,3,3-tetra-cyano-2-eth-oxy-propenide). Acta Crystallogr E Crystallogr Commun 2019; 75:142-145. [PMID: 30800439 PMCID: PMC6362655 DOI: 10.1107/s2056989018018261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 12/23/2018] [Indexed: 11/11/2022]
Abstract
In the title compound, [Co(C10H8N2)3](C9H5N4O)2, the tris-(2,2'-bi-pyridine)-cobalt(II) dication lies across a twofold rotation axes in the space group C2/c. The N atoms of the three bi-pyridine ligands form a distorted octa-hedron around the cobalt ion. All the N atoms of the polynitrile 1,1,3,3-tetra-cyano-2-eth-oxy-propenide anions participate in C-H⋯N hydrogen bonds ensuring crystal cohesion and forming a three-dimensional structure. The structure is further stabilized by C-H⋯π(cation) and anion⋯π(cation) inter-actions.
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Affiliation(s)
- Jamila Benabdallah
- Laboratoire de Matériaux et Cristallochimie, Faculté des Sciences de Tunis, Université de Tunis El Manar, 2092 Manar II Tunis, Tunisia
| | - Zouaoui Setifi
- Département de Technologie, Faculté de Technologie, Université 20 Août 1955-Skikda, BP 26, Route d’El-Hadaiek, Skikda 21000, Algeria
- Laboratoire de Chimie, Ingénierie Moléculaire et Nanostructures (LCIMN), Université Ferhat Abbas Sétif 1, Sétif 19000, Algeria
| | - Fatima Setifi
- Laboratoire de Chimie, Ingénierie Moléculaire et Nanostructures (LCIMN), Université Ferhat Abbas Sétif 1, Sétif 19000, Algeria
| | - Habib Boughzala
- Laboratoire de Matériaux et Cristallochimie, Faculté des Sciences de Tunis, Université de Tunis El Manar, 2092 Manar II Tunis, Tunisia
| | - Abderrahim Titi
- Laboratoire de Chimie Appliquée et Environnement (LCAE), Faculté des Sciences, Université Mohamed Premier, BP 524, 60000, Oujda, Morocco
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64
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Marandi F, Moeini K, Arkak A, Mardani Z, Krautscheid H. Docking studies to evaluate the biological activities of the Co(II) and Ni(II) complexes containing the triazine unit: supported by structural, spectral, and theoretical studies. J COORD CHEM 2019. [DOI: 10.1080/00958972.2018.1543871] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Farzin Marandi
- Inorganic Chemistry Department, Faculty of Chemistry, Urmia University, Urmia, I. R. Iran
| | - Keyvan Moeini
- Chemistry Department, Payame Noor University, Tehran, I. R. Iran
| | - Akbar Arkak
- Inorganic Chemistry Department, Faculty of Chemistry, Urmia University, Urmia, I. R. Iran
| | - Zahra Mardani
- Inorganic Chemistry Department, Faculty of Chemistry, Urmia University, Urmia, I. R. Iran
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65
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Baecker D, Obermoser V, Kirchner EA, Hupfauf A, Kircher B, Gust R. Fluorination as tool to improve bioanalytical sensitivity and COX-2-selective antitumor activity of cobalt alkyne complexes. Dalton Trans 2019; 48:15856-15868. [DOI: 10.1039/c9dt03330k] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Fluorination of the lead Co-ASS yielded antitumor active cobalt alkyne complexes that exhibited both improved COX-2 selectivity and better bioanalytical sensitivity.
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Affiliation(s)
- Daniel Baecker
- Department of Pharmaceutical Chemistry
- Institute of Pharmacy
- CMBI – Center for Molecular Biosciences Innsbruck
- University of Innsbruck
- CCB – Center for Chemistry and Biomedicine
| | - Victoria Obermoser
- Department of Pharmaceutical Chemistry
- Institute of Pharmacy
- CMBI – Center for Molecular Biosciences Innsbruck
- University of Innsbruck
- CCB – Center for Chemistry and Biomedicine
| | - Elisabeth Anna Kirchner
- Department of Pharmaceutical Chemistry
- Institute of Pharmacy
- CMBI – Center for Molecular Biosciences Innsbruck
- University of Innsbruck
- CCB – Center for Chemistry and Biomedicine
| | - Andrea Hupfauf
- Department of Pharmaceutical Chemistry
- Institute of Pharmacy
- CMBI – Center for Molecular Biosciences Innsbruck
- University of Innsbruck
- CCB – Center for Chemistry and Biomedicine
| | - Brigitte Kircher
- Immunobiology and Stem Cell Laboratory
- Department of Internal Medicine V (Hematology and Oncology)
- Innsbruck Medical University
- 6020 Innsbruck
- Austria
| | - Ronald Gust
- Department of Pharmaceutical Chemistry
- Institute of Pharmacy
- CMBI – Center for Molecular Biosciences Innsbruck
- University of Innsbruck
- CCB – Center for Chemistry and Biomedicine
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66
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Abstract
Combining metallo-drugs with ionising radiation for synergistic cancer cell killing: chemical design principles, mechanisms of action and emerging applications.
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Affiliation(s)
- Martin R. Gill
- CRUK/MRC Oxford Institute for Radiation Oncology
- Department of Oncology
- University of Oxford
- Oxford
- UK
| | - Katherine A. Vallis
- CRUK/MRC Oxford Institute for Radiation Oncology
- Department of Oncology
- University of Oxford
- Oxford
- UK
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67
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Ghosh M, Mandal S, Fleck M, Saha R, Rizzoli C, Bandyopadhyay D. Synthesis, crystal structure, and antimicrobial activity of a series of cobalt(III) Schiff base complexes. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1532080] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Mahendra Ghosh
- Department of Chemistry, Bankura Christian College, Bankura, India
| | - Santanu Mandal
- Department of Chemistry, Bankura Christian College, Bankura, India
| | - Michel Fleck
- Institute of Mineralogy and Crystallography, University of Vienna, Vienna, Austria
| | - Rajat Saha
- Department of Chemistry, Kazi Nazrul University, Asansol, India
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68
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TOYAMA M. Crystal Structure of <i>cis</i>-Bis(2,2′-bipyridyl)dichlorocobalt(III) Nitrate Methanol Solvate. X-RAY STRUCTURE ANALYSIS ONLINE 2018. [DOI: 10.2116/xraystruct.34.41] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Mari TOYAMA
- Department of Chemistry of Functional Molecules, Faculty of Science and Engineering, Konan University
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69
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Hussain A, AlAjmi MF, Rehman MT, Khan AA, Shaikh PA, Khan RA. Evaluation of Transition Metal Complexes of Benzimidazole-Derived Scaffold as Promising Anticancer Chemotherapeutics. Molecules 2018; 23:E1232. [PMID: 29883398 PMCID: PMC6100524 DOI: 10.3390/molecules23051232] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 05/08/2018] [Accepted: 05/15/2018] [Indexed: 02/06/2023] Open
Abstract
Three new transition metal complexes, Cu(II) 1, Co(II) 2, and Zn(II) 3 with ligand “bimnap” derived from 1-methyl-2-aminobenzimidazole and 2-hydroxynapthaldehyde were synthesized and characterized. The structure of the ligand was determined by single X-ray crystallography. All the three complexes, 1⁻3, were examined for the mode of interaction with biomolecule viz., calf thymus-DNA (CT-DNA) using various spectroscopic methods. The nuclease activity was performed against pBR322 DNA that exhibited concentration-dependent degradation of the nucleic acid. The mechanism of DNA cleavage was studied by the electrophoretic pattern in the presence of the radical scavengers. Also, the complexes 1⁻3 were analyzed for groove binding affinity. Moreover, in vitro cytotoxicities of the complexes 1⁻3 were tested against the five human cancer cell lines, i.e., HeLa, SK-MEL-1, HepG2, HT108, and MDA-MB 231. Also, the cell adhesion and migration properties upon treatment of cell lines with complexes 1⁻3, and consequently, their cell death pathway via apoptosis and necrosis were analyzed. Further, complexes 1⁻3 were studied in vivo for their toxicities and tolerabilities in mice. In sum, the complexes 1⁻3 showed merits of an effective anticancer agent in cell lines⁻based study while minor side effects were observed in vivo.A green solvent extraction technology involving a microwave processing method was used to increase the content of minor ginsenosides from Panax notoginseng. This article aims to investigate the optimization of preparation of the minor ginsenosides by this microwave processing method using single-factor experiments and response surface methodology (RSM), and discuss the blood-enriching activity and hemostatic activity of the extract of microwave processed P. notoginseng (EMPN) The RSM for production of the minor ginsenosides was based on a three-factor and three-level Box-Behnken design. When the optimum conditions of microwave power, temperature and time were 495.03 W, 150.68 °C and 20.32 min, respectively, results predicted that the yield of total minor ginsenosides (Y₉) would be 93.13%. The actual value of Y₉ was very similar to the predicted value. In addition, the pharmacological results of EMPN in vivo showed that EMPN had the effect of enriching blood in N-acetylphenylhydrazine (APH) and cyclophosphamide (CTX)-induced blood deficient mice because of the increasing content of white blood cells (WBCs) and hemoglobin (HGB) in blood. Hemostatic activity in vitro of EMPN showed that it had significantly shortened the clotting time in PT testing (p < 0.05). The hemostatic effect of EMPN was mainly caused by its components of Rh₄, 20(S)-Rg₃ and 20(R)-Rg₃. This microwave processing method is simple and suitable to mass-produce the minor ginsenosides from P. notoginseng.
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Affiliation(s)
- Afzal Hussain
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 2457, 11451 Riyadh, Saudi Arabia.
| | - Mohamed F AlAjmi
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 2457, 11451 Riyadh, Saudi Arabia.
| | - Md Tabish Rehman
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 2457, 11451 Riyadh, Saudi Arabia.
| | - Azmat Ali Khan
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, 11451 Riyadh, Saudi Arabia.
| | - Perwez Alam Shaikh
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 2457, 11451 Riyadh, Saudi Arabia.
| | - Rais Ahmad Khan
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, 11451 Riyadh, Saudi Arabia.
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