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Banerjee B, Ali A, Kumar S, Verma RK, Verma VK, Singh RC. Tellurium Containing Long Lived Emissive Fluorophore for Selective and Visual Detection of Picric Acid through Photo-Induced Electron Transfer. Chempluschem 2024; 89:e202400035. [PMID: 38552142 DOI: 10.1002/cplu.202400035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/29/2024] [Indexed: 04/28/2024]
Abstract
A novel tellurium (Te) containing fluorophore, 1 and its nickel (2) and copper (3) containing metal organic complex (MOC) have been synthesized to exploit their structural and optical properties and to deploy these molecules as fluorescent probes for the selective and sensitive detection of picric acid (PA) over other commonly available nitro-explosives. Furthermore, density functional theory (DFT) and single crystal X-ray diffraction (SCXRD) techniques revealed the inclusion of "soft" Tellurium (Te) and "hard" Nitrogen (N), Oxygen (O) atoms in the molecular frameworks. Owing to the presence of electron rich "N" and "O" atoms along with "Te" in the molecular framework, 1 could efficiently and selectively sense PA with more than 80 % fluorescence quenching efficiency in organic medium and having detection limit of 4.60 μM. The selective detection of PA compared to other nitro-explosives follows a multi-mechanism based "turn-off" sensing which includes photo-induced electron transfer (PET), electrostatic (π-π stacking and π-anion/cation) interaction, intermolecular hydrogen bonding and inner filter effect (IFE). The test strip study also establishes the sensitivity of 1 for detection of PA.
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Affiliation(s)
- Bhaskar Banerjee
- Department of Forensic Science, Sharda University, Greater Noida, 201306, India
| | - Afsar Ali
- Department of Chemistry and Biochemistry, Sharda University, Greater Noida, 201306, India
| | - Sandeep Kumar
- Department of Chemistry, University of Delhi, New Delhi, 110007, India
| | | | - Vinay Kumar Verma
- Department of Chemistry and Biochemistry, Sharda University, Greater Noida, 201306, India
| | - Ram Chandra Singh
- Department of Physics, Sharda University, Greater Noida, 201306, India
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2
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Johnson J, Justin Dhanaraj C. Studies on some biologically active Metal(II) chelates: Spectral, thermal, biological and molecular modelling approaches. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3
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Lin Y, Betts H, Keller S, Cariou K, Gasser G. Recent developments of metal-based compounds against fungal pathogens. Chem Soc Rev 2021; 50:10346-10402. [PMID: 34313264 DOI: 10.1039/d0cs00945h] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This review provides insight into the rapidly expanding field of metal-based antifungal agents. In recent decades, the antibacterial resistance crisis has caused reflection on many aspects of public health where weaknesses in our medicinal arsenal may potentially be present - including in the treatment of fungal infections, particularly in the immunocompromised and those with underlying health conditions where mortality rates can exceed 50%. Combination of organic moieties with known antifungal properties and metal ions can lead to increased bioavailability, uptake and efficacy. Development of such organometallic drugs may alleviate pressure on existing antifungal medications. Prodigious antimicrobial moieties such as azoles, Schiff bases, thiosemicarbazones and others reported herein lend themselves easily to the coordination of a host of metal ions, which can vastly improve the biocidal activity of the parent ligand, thereby extending the library of antifungal drugs available to medical professionals for treatment of an increasing incidence of fungal infections. Overall, this review shows the impressive but somewhat unexploited potential of metal-based compounds to treat fungal infections.
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Affiliation(s)
- Yan Lin
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France.
| | - Harley Betts
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France.
| | - Sarah Keller
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France.
| | - Kevin Cariou
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France.
| | - Gilles Gasser
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 75005 Paris, France.
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4
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Kumar A, Balbach J. Inactivation of parathyroid hormone: perspectives of drug discovery to combating hyperparathyroidism. Curr Mol Pharmacol 2021; 15:292-305. [PMID: 33573587 DOI: 10.2174/1874467214666210126112839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 11/22/2022]
Abstract
Hormonal coordination is tightly regulated within the human body and thus regulates human physiology. The parathyroid hormone (PTH), a member of the endocrine system, regulates the calcium and phosphate level within the human body. Under non-physiological conditions, PTH levels get upregulated (hyperparathyroidism) or downregulated (hypoparathyroidism) due to external or internal factors. In the case of hyperparathyroidism, elevated PTH stimulates cellular receptors present in the bones, kidneys, and intestines to increase the blood calcium level, leading to calcium deposition. This eventually causes various symptoms including kidney stones. Currently, there is no known medication that directly targets PTH in order to suppress its function. Therefore, it is of great interest to find novel small molecules or any other means that can modulate PTH function. The molecular signaling of PTH starts by binding of its N-terminus to the G-protein coupled PTH1/2 receptor. Therefore, any intervention that affects the N-terminus of PTH could be a lead candidate for treating hyperparathyroidism. As a proof-of-concept, there are various possibilities to inhibit molecular PTH function by (i) a small molecule, (ii) N-terminal PTH phosphorylation, (iii) fibril formation and (iv) residue-specific mutations. These modifications put PTH into an inactive state, which will be discussed in detail in this review article. We anticipate that exploring small molecules or other means that affect the N-terminus of PTH could be lead candidates in combating hyperparathyroidism.
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Affiliation(s)
- Amit Kumar
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College of Science, Technology and Medicine London, South Kensington, London SW7 2BU. United Kingdom
| | - Jochen Balbach
- Institute of Physics, Biophysics, Martin-Luther-University Halle- Wittenberg. Germany
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5
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Sunil Kumar N, Krishnamurthy G, somegowda M, Pari M, Ravikumar Naik T, Jithedra Kumara K, Naik S, Kandagalla S, Naik N. Synthesis, characterization, electrochemistry, biological and molecular docking studies of the novel Co(II), Ni(II) and Cu(II) complexes derived from methanethiol bridged (2-((1H-benzo[d]imidazol-2-yl)methylthio)-1H-benzo[d]imidazol-6-yl)(phenyl)methanone. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128586] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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6
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Dezhampanah H, Firouzi R, Moradi Shoeili Z, Binazir R. Intermolecular investigation on interaction of two ternary copper(II) Schiff base complexes with bovine serum albumin. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127557] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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7
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Beebe SJ, Celestine MJ, Bullock JL, Sandhaus S, Arca JF, Cropek DM, Ludvig TA, Foster SR, Clark JS, Beckford FA, Tano CM, Tonsel-White EA, Gurung RK, Stankavich CE, Tse-Dinh YC, Jarrett WL, Holder AA. Synthesis, characterization, DNA binding, topoisomerase inhibition, and apoptosis induction studies of a novel cobalt(III) complex with a thiosemicarbazone ligand. J Inorg Biochem 2020; 203:110907. [PMID: 31715377 PMCID: PMC7053658 DOI: 10.1016/j.jinorgbio.2019.110907] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 10/24/2019] [Accepted: 10/27/2019] [Indexed: 01/09/2023]
Abstract
In this study, 9-anthraldehyde-N(4)-methylthiosemicarbazone (MeATSC) 1 and [Co(phen)2(O2CO)]Cl·6H2O 2 (where phen = 1,10-phenanthroline) were synthesized. [Co(phen)2(O2CO)]Cl·6H2O 2 was used to produce anhydrous [Co(phen)2(H2O)2](NO3)33. Subsequently, anhydrous [Co(phen)2(H2O)2](NO3)33 was reacted with MeATSC 1 to produce [Co(phen)2(MeATSC)](NO3)3·1.5H2O·C2H5OH 4. The ligand, MeATSC 1 and all complexes were characterized by elemental analysis, FT IR, UV-visible, and multinuclear NMR (1H, 13C, and 59Co) spectroscopy, along with HRMS, and conductivity measurements, where appropriate. Interactions of MeATSC 1 and complex 4 with calf thymus DNA (ctDNA) were investigated by carrying out UV-visible spectrophotometric studies. UV-visible spectrophotometric studies revealed weak interactions between ctDNA and the analytes, MeATSC 1 and complex 4 (Kb = 8.1 × 105 and 1.6 × 104 M-1, respectively). Topoisomerase inhibition assays and cleavage studies proved that complex 4 was an efficient catalytic inhibitor of human topoisomerases I and IIα. Based upon the results obtained from the 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) assay on 4T1-luc metastatic mammary breast cancer cells (IC50 = 34.4 ± 5.2 μM when compared to IC50 = 13.75 ± 1.08 μM for the control, cisplatin), further investigations into the molecular events initiated by exposure to complex 4 were investigated. Studies have shown that complex 4 activated both the apoptotic and autophagic signaling pathways in addition to causing dissipation of the mitochondrial membrane potential (ΔΨm). Furthermore, activation of cysteine-aspartic proteases3 (caspase 3) in a time- and concentration-dependent manner coupled with the ΔΨm, studies implicated the intrinsic apoptotic pathway as the major regulator of cell death mechanism.
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Affiliation(s)
- Stephen J Beebe
- The Frank Reidy Center for Bioelectrics, 4211 Monarch Way, Suite 300, Norfolk, VA 23529, USA
| | - Michael J Celestine
- Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, VA 23529, USA
| | - Jimmie L Bullock
- Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, VA 23529, USA
| | - Shayna Sandhaus
- Department of Chemistry and Biochemistry, Biomolecular Sciences Institute, Florida International University, 11200 SW 8th St., Miami, FL 33199, USA
| | - Jessa Faye Arca
- Department of Chemistry and Biochemistry, The University of Southern Mississippi, 118 College Drive, Hattiesburg, MS 39406, USA
| | - Donald M Cropek
- U.S. Army Corps of Engineers, Construction Engineering Research Laboratory, Champaign, IL 61822, USA
| | - Tekettay A Ludvig
- Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, VA 23529, USA
| | - Sydney R Foster
- Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, VA 23529, USA
| | - Jasmine S Clark
- Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, VA 23529, USA
| | - Floyd A Beckford
- The University of Virginia's College at Wise, 1 College Avenue, Wise, VA 24293, USA
| | - Criszcele M Tano
- Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, VA 23529, USA
| | - Elizabeth A Tonsel-White
- Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, VA 23529, USA
| | - Raj K Gurung
- Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, VA 23529, USA
| | - Courtney E Stankavich
- Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, VA 23529, USA
| | - Yuk-Ching Tse-Dinh
- Department of Chemistry and Biochemistry, Biomolecular Sciences Institute, Florida International University, 11200 SW 8th St., Miami, FL 33199, USA
| | - William L Jarrett
- School of Polymers and High-Performance Materials, The University of Southern Mississippi, 118 College Drive, #5050, Hattiesburg, MS 39406, USA
| | - Alvin A Holder
- Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, VA 23529, USA.
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8
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Kabeer H, Hanif S, Arsalan A, Asmat S, Younus H, Shakir M. Structural-Dependent N,O-Donor Imine-Appended Cu(II)/Zn(II) Complexes: Synthesis, Spectral, and in Vitro Pharmacological Assessment. ACS OMEGA 2020; 5:1229-1245. [PMID: 31984281 PMCID: PMC6977212 DOI: 10.1021/acsomega.9b03762] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 12/23/2019] [Indexed: 05/26/2023]
Abstract
Four mononuclear bioefficient imine-based coordination complexes, [(L 1 ) 2 Cu], [(L 1 ) 2 Zn], [(L 2 )Cu(H 2 O)], and [(L 2 )Zn(H 2 O)], were synthesized using ligands [L 1 = 2-(((3-hydroxynaphthalen-2-yl)methylene)amino)-2-methylpropane-1,3-diol and L 2 = 4-(1-((1,3-dihydroxy-2-methylpropan-2-yl)imino)ethyl)benzene-1,3-diol]. The formation of the complexes was ascertained by elemental analysis, Fourier transform infrared, 1H NMR, 13C NMR, electrospray ionization-mass spectroscopy, electron paramagnetic resonance, and thermogravimetric analysis. The comparative binding propensity profiles of the above-synthesized complexes with the DNA/human serum albumin (HSA) were investigated via UV absorption, fluorescence, and Förster resonance energy-transfer studies. On the basis of extended conjugation and planarity, L 1 complexes exhibited superior bioactivity with greater calculated DNA binding constant values, (K b) 2.9444 × 103 [(L 1 ) 2 Cu] and 2.2693 × 103 [(L 1 ) 2 Zn], as compared to L 2 complexes, 1.793 × 103 [(L 2 )Cu(H 2 O)] and 9.801 × 102 [(L 2 )Zn(H 2 O)]. The competitive displacement assay of complexes was performed by means of fluorogenic dyes (EtBr and Hoechst), which corroborates the occurrence of minor groove binding because of the enhanced displacement activity with Hoechst 33258. The minor groove binding of the [(L 1 ) 2 Cu] complex is further confirmed by the molecular docking study. Moreover, the HSA study demonstrated effective static quenching of complexes with substantial K sv values. The [(L 1 ) 2 Cu] complex was found to have pronounced cleavage efficiency as evaluated from sodium dodecyl sulfate polyacrylamide gel electrophoresis electrophoresis. Furthermore, in vitro antioxidant activity against 2,2-diphenyl-1-picrylhydrazyl and superoxide radicals further proclaimed the remarkable bioefficiency of compounds, which make them promising as active chemotherapeutic agents.
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Affiliation(s)
- Hina Kabeer
- Department
of Chemistry, Interdisciplinary Biotechnology Unit, and Department of
Biochemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Summaiya Hanif
- Department
of Chemistry, Interdisciplinary Biotechnology Unit, and Department of
Biochemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Abdullah Arsalan
- Department
of Chemistry, Interdisciplinary Biotechnology Unit, and Department of
Biochemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Shamoon Asmat
- Department
of Chemistry, Interdisciplinary Biotechnology Unit, and Department of
Biochemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Hina Younus
- Department
of Chemistry, Interdisciplinary Biotechnology Unit, and Department of
Biochemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Mohammad Shakir
- Department
of Chemistry, Interdisciplinary Biotechnology Unit, and Department of
Biochemistry, Aligarh Muslim University, Aligarh 202002, India
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9
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Exploring the DNA binding efficacy of Cobalt(II) and Copper(II) complexes of hydroxamic acids and explicating their anti-cancer propensity. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.07.099] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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10
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Synthesis, crystal structure, spectroscopic investigations, and computational studies of Ni(II) and Pd(II) complexes with asymmetric tetradentate NOON Schiff base ligand. Struct Chem 2019. [DOI: 10.1007/s11224-019-01350-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Thakur Y, Tripathi M, Verma B, Khilari R, Agrawal R, Likheshwari, Pande R, Mohapatra E. New insight into the DNA binding studies, In-Vitro anti-cancer activity and molecular modelling of dioxo complexes of Molybdenum(VI) and Tungsten(VI) hydroxamic acids. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2019. [DOI: 10.1080/10601325.2019.1578615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Yamini Thakur
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh, India
| | - Mamta Tripathi
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh, India
| | - Bharati Verma
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh, India
| | - Rubi Khilari
- CSIR-Central Institute of Mining and Fuel Research, Bilaspur Unit, Chhattisgarh, India
| | - Rainy Agrawal
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh, India
| | - Likheshwari
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh, India
| | - Rama Pande
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh, India
| | - Eli Mohapatra
- Biochemistry Department, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India
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12
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N. SK, G. K, Bodke YD, Malojirao VH, T. R. RN, Kandagalla S, B. T. P. Synthesis, characterization and tumor inhibitory activity of a novel Pd(ii) complex derived from methanethiol-bridged (2-((1H-benzo[d]imidazol-2-yl)methylthio)-1H-benzo[d]imidazol-6-yl)(phenyl)methanone. NEW J CHEM 2019. [DOI: 10.1039/c8nj03057j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This manuscript demonstrates the synthesis and tumor inhibitory activity of (2-((1H-benzo[d]imidazol-2-yl)methylthio)-1H-benzo[d]imidazol-6-yl)(phenyl)methanone and its Pd(ii) complex.
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Affiliation(s)
- Sunil Kumar N.
- Department of Chemistry
- Sahyadri Science College
- Kuvempu University
- Shimoga
- India
| | - Krishnamurthy G.
- Department of Chemistry
- Sahyadri Science College
- Kuvempu University
- Shimoga
- India
| | - Yadav D. Bodke
- Department of Industrial Chemistry
- Kuvempu University
- Shankarghatta
- India
| | - Vikas H. Malojirao
- Molecular Biomedicine Laboratory
- Postgraduate Department of Studies and Research in Biotechnology
- Sahyadri Science College
- Kuvempu University
- Shimoga
| | - Ravikumar Naik T. R.
- Centre for Nano Science and Engineering (CeNSE)
- Indian Institute of Science
- Bangalore
- India
| | | | - Prabhakar B. T.
- Molecular Biomedicine Laboratory
- Postgraduate Department of Studies and Research in Biotechnology
- Sahyadri Science College
- Kuvempu University
- Shimoga
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13
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Kareem A, Nami SAA, Khan MS, Bhat SA, Mirza AU, Laxmi L, Nishat N. Self-assembled transition metal dithiocarbamates of pyridine-3-carboxamide: synthesis, spectral characterization, thermal and biological studies. NEW J CHEM 2019. [DOI: 10.1039/c8nj03660h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of self assembled transition metal dithiocarbamates of pyridine-3-carboxamide by conventional as well as in situ methodology was reported. Characterization was done with a variety of spectroscopic techniques. Anticancer and antioxidant activity of ligand and its complexes is also tested.
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Affiliation(s)
- Abdul Kareem
- Material Research Lab
- Department of Chemistry
- Jamia Millia Islamia
- New Delhi-110025
- India
| | - Shahab A. A. Nami
- Department of Kulliyat
- Faculty of Unani Medicine
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Mohd Shoeb Khan
- Interdisciplinary Nanotechnology Centre
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Shahnawaz Ahmad Bhat
- Material Research Lab
- Department of Chemistry
- Jamia Millia Islamia
- New Delhi-110025
- India
| | - Azar Ullah Mirza
- Material Research Lab
- Department of Chemistry
- Jamia Millia Islamia
- New Delhi-110025
- India
| | - Laxmi Laxmi
- Material Research Lab
- Department of Chemistry
- Jamia Millia Islamia
- New Delhi-110025
- India
| | - Nahid Nishat
- Material Research Lab
- Department of Chemistry
- Jamia Millia Islamia
- New Delhi-110025
- India
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14
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Sedighipoor M, Kianfar AH, Sabzalian MR, Abyar F. Synthesis and characterization of new unsymmetrical Schiff base Zn (II) and Co (II) complexes and study of their interactions with bovin serum albumin and DNA by spectroscopic techniques. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 198:38-50. [PMID: 29505940 DOI: 10.1016/j.saa.2018.02.050] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 02/06/2018] [Accepted: 02/19/2018] [Indexed: 06/08/2023]
Abstract
Two novel tetra-coordinated Cobalt(II) and Zinc (II) chelate series with the general formula of [Co (L)·2H2O] (1) and [Zn (L)] (2) [L=N-2-hydroxyacetophenon-N'-2-hydroxynaphthaldehyde-1,2 phenylenediimine)] with biologically active Schiff base ligands were synthesized and recognized by elemental analysis and multi-nuclear spectroscopy (IR and 1H and 13C NMR); then, their biological activities including DNA and protein interactions were studied. The interaction of the synthesized compounds with bovine serum albumin (BSA) was investigated via fluorescence spectroscopy, showing the affinity of the complexes for these proteins with relatively high binding constant values and the changed secondary BSA structure in the presence of the complexes. The interaction of these compounds with CT-DNA was considered by UV-Vis technique, emission titration, viscosity measurements, helix melting methods, and circular dichroism (CD) spectroscopy, confirming that the complexes were bound to CT-DNA by the intercalation binding mode. Furthermore, the complexes had the capability to displace the DNA-bound MB, as shown by the competitive studies of these complexes with methylene blue (MB), thereby suggesting the intercalation mode for the competition. Finally, the theoretical studies carried out by the docking method were performed to calculate the binding constants and recognize the binding site of the BSA and DNA by the complexes. In addition, in vitro and in silico studies showed that the compounds were degradable by bacterial and fungal biodegradation activities.
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Affiliation(s)
- Maryam Sedighipoor
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Ali Hossein Kianfar
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran.
| | - Mohammad R Sabzalian
- Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Fatemeh Abyar
- Department of Chemical Engineering, Faculty of Engineering, Ardakan University, Ardakan 89518-95491, Iran
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15
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Kosiha A, Parthiban C, Elango KP. Metal(II) complexes of bioactive aminonaphthoquinone-based ligand: synthesis, characterization and BSA binding, DNA binding/cleavage, and cytotoxicity studies. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1461846] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- A. Kosiha
- Department of Chemistry, Gandhigram Rural Institute, Deemed to be University, Gandhigram, India
| | - C. Parthiban
- Department of Chemistry, Gandhigram Rural Institute, Deemed to be University, Gandhigram, India
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16
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Mathan Kumar S, Kesavan MP, Vinoth Kumar GG, Sankarganesh M, Chakkaravarthi G, Rajagopal G, Rajesh J. New heteroleptic Zn(II) complexes of thiosemicarbazone and diimine Co-Ligands: Structural analysis and their biological impacts. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.09.070] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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17
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Mir JM, Vishwakarma PK, Maurya RC. Conjoint experimental–theoretical evaluation of pyrone-salicylic acid hydrazide copper(II) Schiff base complexes: their synthesis, SOD and electrochemical fronts. ACTA ACUST UNITED AC 2017. [DOI: 10.1080/22243682.2017.1407669] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- J. M. Mir
- Coordination, Metallopharmaceutical and Computational Chemistry Laboratory, Department of P. G. Studies and Research in Chemistry and Pharmacy, R. D. University, Jabalpur, India
| | - P. K. Vishwakarma
- Coordination, Metallopharmaceutical and Computational Chemistry Laboratory, Department of P. G. Studies and Research in Chemistry and Pharmacy, R. D. University, Jabalpur, India
| | - R. C. Maurya
- Coordination, Metallopharmaceutical and Computational Chemistry Laboratory, Department of P. G. Studies and Research in Chemistry and Pharmacy, R. D. University, Jabalpur, India
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Kumar A. A small-molecule acts as a 'roadblock' on DNA, hampering its fundamental processes. J Inorg Biochem 2017; 176:134-139. [PMID: 28892676 DOI: 10.1016/j.jinorgbio.2017.08.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 08/02/2017] [Accepted: 08/25/2017] [Indexed: 12/24/2022]
Abstract
DNA replication, RNA and protein synthesis are the most fundamental housekeeping processes involved in an organism's growth. Failure or dysregulation of these pathways are often deleterious to life. Therefore, selective inhibition of such processes can be crucial for the inhibition of the growth of any cell, including cancer cells, pathogenic bacteria or other deadly microbes. In the present study, a Zn2+ complex is shown to act as a roadblock of DNA. The Zn2+ complex inhibited DNA taq polymerase activity under the in vitro conditions of polymerase chain reaction (PCR). Under in vivo conditions, it readily crosses the cell wall of gram-negative bacteria (Escherichia coli), leading to the reduction of RNA levels as well as protein content. Growth of pathogenic bacteria (e.g., Staphylococcus aureus and Pseudomonas aeruginosa) was also significantly retarded. The Zn2+ complex binds to the grooves of the DNA without inducing conformational changes or exhibiting chemical nuclease activity. To the best current knowledge, this is first coordination complex exhibiting a 'roadblock' property under both in vitro and in vivo conditions (show at all three levels - DNA, RNA and protein). The label-free approach used in this study may offer an alternative route towards fighting pathogenic bacteria or cancer cells by hampering fundamental cellular processes.
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Affiliation(s)
- Amit Kumar
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, UK; Institute of Physics, Biophysics, Martin-Luther-University Halle-Wittenberg, Germany.
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Prakash TD, Dhayabaran VV. Bioactive M(II) complexes of amino acid-based N 3O donor mixed ligand: in vitro and in silico DNA binding studies. J Chem Biol 2017; 10:117-127. [PMID: 28684998 DOI: 10.1007/s12154-017-0170-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 04/19/2017] [Indexed: 11/26/2022] Open
Abstract
Three novel mixed ligand M(II) complexes, namely [CoL1L2Cl2] (1), [CuL1L2Cl2] (2), and [ZnL1L2Cl2] (3), were synthesized using 1,4-naphthoquinone, L-histidine, and 1,10-phenanthroline as ligands. The ligand framework and the corresponding structural changes on complexation were ascertained based on the results of elemental analysis, conductivity measurements, magnetic behavior, FT-IR, UV-visible, 1H NMR, 13C NMR, ESR spectral studies, and ESI mass spectrometry. The biological action of the ligand (L) and complexes 1-3 such as DNA binding and cleaving ability were studied. Results suggest that the ligand and the complexes could interact with calf thymus-DNA (CT-DNA) via intercalation mode. Additionally, complex 2 displayed potential antioxidant activity in in vitro studies. Docking simulation was performed to position the ligand and the complexes into the active site of BDNA (IBNA) to determine the probable binding mode.
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Affiliation(s)
- T Daniel Prakash
- PG and Research Department of Chemistry, Bishop Heber College (Autonomous), Tiruchirappalli, Tamilnadu 620017 India
| | - V Violet Dhayabaran
- PG and Research Department of Chemistry, Bishop Heber College (Autonomous), Tiruchirappalli, Tamilnadu 620017 India
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Gubendran A, Kesavan MP, Ayyanaar S, Mitu L, Athappan P, Rajesh J. Non-enolisable Knoevenagel condensate appended Schiff bases-metal (II) complexes: Spectral characteristics, DNA-binding and nuclease activities. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 181:39-46. [PMID: 28319797 DOI: 10.1016/j.saa.2017.03.031] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 03/14/2017] [Accepted: 03/14/2017] [Indexed: 06/06/2023]
Abstract
New Schiff base complexes [Cu(L1)Cl] (1), [Ni(L1)Cl] (2), [Zn(L1)Cl] (3), and [Fe(L2)H2OCl] (4) {L1=(4E)-3-(2-hydroxybenzylidene)-4-(2-hydroxyphenylimino)pentan-2-one, L2=2,2'-(1E,1'E)-(3-(2-hydroxybenzylidene)-pentane-2,4-diylidene)bis(azan-1-yl-1 idene)diphenol} have been synthesized and characterized by elemental analysis, UV-Vis, IR, FAB-mass, EPR, spectral studies and electrochemical studies, the ligands L1 &L2 were characterized by 1H and 13C NMR spectra. Complex 1 show a visible spectral d-d band near 600nm and display cyclic voltammetric quasireversible response for the Cu(II)/Cu(I) couple vs Ag/AgCl in DMSO. The EPR spectrum of 1 show g‖>g⊥ suggesting a square planar geometry around copper with dx2-y2 as the ground state. The mass spectral results have confirmed the proposed structure for complexes 1-4. DNA binding properties of these complexes 1-4 have been investigated by absorption titrations, cyclic voltammetric studies and circular dichroism studies. On titration with DNA, the complexes 1-4 show hypochromism at the MLCT band (13-31%) with a red shift of 1-8nm in the electronic spectrum and positive shift of voltammetric E1/2 in the CV studies are in favour of intercalative binding. CD spectra of 1 showed an increase in molar ellipticity (θ278) of the positive band with a minor red shift indicating the transition of B-form of DNA to A like form. DNA cleavage studies of complexes 1 and 4 with pUC18 DNA were studied by gel electrophoresis and complex 4 cleaves supercoiled pUC18 DNA in an oxidative manner in the presence of H2O2 and on photo irradiation at 312nm.
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Affiliation(s)
- Ammavasi Gubendran
- Department of Inorganic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India; Department of Chemistry, Saraswathi Narayanan College, Madurai 625 022, India
| | | | - Srinivasan Ayyanaar
- Chemistry Research Centre, Mohamed Sathak Engineering College, Kilakarai 623 806, Tamilnadu, India
| | - Liviu Mitu
- Department of Physics and Chemistry, University of Pitesti, Pitesti 110040, Romania
| | - Periyakaruppan Athappan
- Department of Inorganic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India
| | - Jegathalaprathaban Rajesh
- Department of Inorganic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India; Chemistry Research Centre, Mohamed Sathak Engineering College, Kilakarai 623 806, Tamilnadu, India.
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21
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Synthesis, X-ray crystal structure, DNA/BSA binding, DNA cleavage and cytotoxicity studies of phenanthroline based copper(II)/zinc(II) complexes. Biometals 2017; 30:575-587. [DOI: 10.1007/s10534-017-0028-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 06/09/2017] [Indexed: 12/22/2022]
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22
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Kesavan M, Vinoth Kumar G, Dhaveethu Raja J, Anitha K, Karthikeyan S, Rajesh J. DNA interaction, antimicrobial, antioxidant and anticancer studies on Cu(II) complexes of Luotonin A. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 167:20-28. [DOI: 10.1016/j.jphotobiol.2016.11.024] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 11/07/2016] [Indexed: 01/18/2023]
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Novel Bioactive Co(II), Cu(II), Ni(II) and Zn(II) Complexes with Schiff Base Ligand Derived from Histidine and 1,3-Indandione: Synthesis, Structural Elucidation, Biological Investigation and Docking Analysis. J Fluoresc 2016; 27:135-150. [DOI: 10.1007/s10895-016-1941-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 09/21/2016] [Indexed: 12/25/2022]
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24
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Yanick Gaelle DS, Ondoh Agwara M, Yufanyi DM, Nenwa J, Jagan R. Crystal structure and antimicrobial properties of a copper(II) complex with 1,10-phenanthroline and azide co-ligand. INORG NANO-MET CHEM 2016. [DOI: 10.1080/15533174.2016.1212220] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
| | - Moise Ondoh Agwara
- Department of Inorganic Chemistry, University of Yaounde I, Yaounde, Cameroon
| | - Divine Mbom Yufanyi
- Department of Chemistry, The University of Bamenda, Bambili, Bamenda, Cameroon
| | - Justin Nenwa
- Department of Inorganic Chemistry, University of Yaounde I, Yaounde, Cameroon
| | - Rajamony Jagan
- Sophisticated Analytical Instruments Facility, Indian Institute of Technology, Chennai, India
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25
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Influence of Amino Acid-Nucleobase Hybrid Ligand in Binding and Biological Activity of Co(II) and Zn(II) Complexes. J Fluoresc 2016; 26:1825-37. [DOI: 10.1007/s10895-016-1874-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 07/06/2016] [Indexed: 10/21/2022]
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26
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Theoretical and experimental studies of two Co(II) and Ni(II) coordination complex with N,O donor 2-chloro-6-{[(4-hydroxy-3-methoxyphenyl)methylidene]amino}-4 nitrophenol ligand. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.03.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Kareem A, Arshad M, Nami SAA, Nishat N. Herbo-mineral based Schiff base ligand and its metal complexes: Synthesis, characterization, catalytic potential and biological applications. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 160:163-71. [PMID: 27107703 DOI: 10.1016/j.jphotobiol.2016.03.030] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 03/19/2016] [Accepted: 03/21/2016] [Indexed: 12/13/2022]
Abstract
Schiff base ligand, (L), derived from condensation reaction of 1,7-bis-(4-hydroxy-3-methoxyphenyl)-1,6-heptadiene-3,5-dione, (curcumin), with pyridine-3-carboxamide, (nicotinamide), and its complexes of Co(II), Ni(II) and Cu(II) ions, containing 1,10-phenanthroline as auxiliary ligand were synthesized and characterized by various physico-chemical techniques. From the micro analytical data, the stoichiometry of the complexes 1:1 (metal: ligand) was ascertained. The Co(II) and Cu(II) forms octahedral complexes, while the geometric structure around Ni(II) atom can be described as square planar. The catalytic potential of the metal complexes have been evaluated by recording the rate of decomposition of hydrogen peroxide. The results reveal that the percent decomposition of H2O2increases with time and the highest value (50.50%) was recorded for Co(II) complex. The ligand and its complexes were also screened for their in vitro antibacterial activity against Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, Streptococcus pyogenes and Pseudomonas aeruginosa. The relative order of antibacterial activity against S. Pyogenes, S. aureus and E. coli is Cu(II)>Ni(II)>Co(II)>(L); while with P. aeruginosa, K. pneumoniae the order of activity is Cu(II)>Co(II)>Ni(II)>(L). The anthelmintic screening was performed using Pheretima posthuma. The order of anthelmintic activity of ligand and its complexes is [(Phen)CuLCl2]>[(Phen)CoLCl2]>[(Phen)NiL]Cl2>(L).
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Affiliation(s)
- Abdul Kareem
- Material Research Lab, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | - Mohammad Arshad
- College of Medicine-Aldawadmi, Shaqra University, Saudi Arabia
| | - Shahab A A Nami
- Department of Kulliyat, Faculty of Unani Medicine, Aligarh Muslim University, Aligarh 202002, India
| | - Nahid Nishat
- Material Research Lab, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India.
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Kumar A, Baumann M, Balbach J. Small Molecule Inhibited Parathyroid Hormone Mediated cAMP Response by N-Terminal Peptide Binding. Sci Rep 2016; 6:22533. [PMID: 26932583 PMCID: PMC4773758 DOI: 10.1038/srep22533] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 02/11/2016] [Indexed: 11/30/2022] Open
Abstract
Ligand binding to certain classes of G protein coupled receptors (GPCRs) stimulates the rapid synthesis of cAMP through G protein. Human parathyroid hormone (PTH), a member of class B GPCRs, binds to its receptor via its N–terminal domain, thereby activating the pathway to this secondary messenger inside cells. Presently, GPCRs are the target of many pharmaceuticals however, these drugs target only a small fraction of structurally known GPCRs (about 10%). Coordination complexes are gaining interest due to their wide applications in the medicinal field. In the present studies we explored the potential of a coordination complex of Zn(II) and anthracenyl–terpyridine as a modulator of the parathyroid hormone response. Preferential interactions at the N–terminal domain of the peptide hormone were manifested by suppressed cAMP generation inside the cells. These observations contribute a regulatory component to the current GPCR–cAMP paradigm, where not the receptor itself, but the activating hormone is a target. To our knowledge, this is the first report about a coordination complex modulating GPCR activity at the level of deactivating its agonist. Developing such molecules might help in the control of pathogenic PTH function such as hyperparathyroidism, where control of excess hormonal activity is essentially required.
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Affiliation(s)
- Amit Kumar
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, UK.,Institute of Physics, Biophysics, Martin-Luther-University Halle-Wittenberg, Germany
| | - Monika Baumann
- Institute of Physics, Biophysics, Martin-Luther-University Halle-Wittenberg, Germany
| | - Jochen Balbach
- Institute of Physics, Biophysics, Martin-Luther-University Halle-Wittenberg, Germany.,Centre for Structure und Dynamics of Proteins (MZP), Martin-Luther-University Halle-Wittenberg, Germany
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29
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Kusmariya BS, Mishra AP. Theoretical and experimental studies on three new coordination complexes of Co(II), Ni(II), and Cu(II) with 2,4-dichloro-6-{(E)-[(5-chloro-2 sulfanylphenyl)imino]methyl}phenol Schiff base ligand. J Mol Model 2015; 21:278. [PMID: 26438445 DOI: 10.1007/s00894-015-2805-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 08/30/2015] [Indexed: 11/24/2022]
Abstract
Three mononuclear coordination complexes of Co(II), Ni(II), and Cu(II) have been synthesized from 2,4-dichloro-6-{(E)-[(5-chloro-2-sulfanylphenyl)imino]methyl}phenol ligand (H 2 L) obtained by simple condensation reaction of 3,5-dichloro-2-hydroxybenzaldehyde and 2-amino-4-chlorobenzenethiol and characterized by elemental analysis, spectral (FT-IR, electronic, and (1)H-NMR), molar conductance, thermal, SEM, PXRD, and fluorescence studies. The PXRD analysis and SEM-EDX micrographs show the crystalline nature of complexes. The domain size and the lattice strain of synthesized compounds have been determined according to Williamson-Hall plot. TG of the synthesized complexes illustrates the general decomposition pattern of the complexes. The ligand exhibits an interesting fluorescence property which is suppressed after complex formation. The Co(II) complex adopted a distorted octahedral configuration while Ni(II) and Cu(II) complexes showed square planar geometry around metal center. The geometry optimization, HOMO-LUMO, molecular electrostatic potential map (MEP), and spin density of synthesized compounds have been performed by density functional theory (DFT) method using B3LYP/6-31G and B3LYP/LANL2DZ as basis set. Graphical abstract Three new coordination complexes of Co(II), Ni(II) and Cu(II) with 2,4-dichloro-6-{(E)-[(5-chloro-2 sulfanylphenyl)imino]methyl}phenol Schiff base ligand.
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Affiliation(s)
| | - A P Mishra
- Department of Chemistry, Dr. H. S. Gour Central University, Sagar, India, 470003.
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30
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Ravi M, Chennam KP, Ushaiah B, Eslavath RK, Perugu S, Ajumeera R, Devi CS. A Study on Spectro-Analytical Aspects, DNA - Interaction, Photo-Cleavage, Radical Scavenging, Cytotoxic Activities, Antibacterial and Docking Properties of 3 - (1 - (6 - methoxybenzo [d] thiazol - 2 - ylimino) ethyl) - 6 - methyl - 3H - pyran - 2, 4 - dione and its Metal Complexes. J Fluoresc 2015; 25:1279-96. [PMID: 26315729 DOI: 10.1007/s10895-015-1616-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 07/05/2015] [Indexed: 12/21/2022]
Abstract
The focus of the present work is on the design, synthesis, characterization, DNA-interaction, photo-cleavage, radical scavenging, in-vitro cytotoxicity, antimicrobial, docking and kinetic studies of Cu (II), Cd (II), Ce (IV) and Zr (IV) metal complexes of an imine derivative, 3 - (1 - (6 - methoxybenzo [d] thiazol - 2 - ylimino) ethyl) - 6 - methyl - 3H - pyran - 2, 4 - dione. The investigation of metal ligand interactions for the determination of composition of metal complexes, corresponding kinetic studies and antioxidant activity in solution was carried out by spectrophotometric methods. The synthesized metal complexes were characterized by EDX analysis, Mass, IR, (1)H-NMR, (13)C-NMR and UV-Visible spectra. DNA binding studies of metal complexes with Calf thymus (CT) DNA were carried out at room temperature by employing UV-Vis electron absorption, fluorescence emission and viscosity measurement techniques. The results revealed that these complexes interact with DNA through intercalation. The results of in vitro antibacterial studies showed the enhanced activity of chelating agent in metal chelated form and thus inferring scope for further development of new therapeutic drugs. Cell viability experiments indicated that all complexes showed significant dose dependent cytotoxicity in selected cell lines. The molecular modeling and docking studies were carried out with energy minimized structures of metal complexes to identify the receptor to metal interactions.
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Affiliation(s)
- Mudavath Ravi
- Department of Chemistry, Osmania University, Hyderabad, 500 007, Telangana, India
| | | | - B Ushaiah
- Department of Chemistry, Osmania University, Hyderabad, 500 007, Telangana, India
| | - Ravi Kumar Eslavath
- Department of Bio-Chemistry, Osmania University, Hyderabad, 500 007, Telangana, India
| | - Shyam Perugu
- Department of Bio-Chemistry, Osmania University, Hyderabad, 500 007, Telangana, India
| | - Rajanna Ajumeera
- National Institute of Nutrition, Hyderabad, 500 007, Telangana, India
| | - Ch Sarala Devi
- Department of Chemistry, Osmania University, Hyderabad, 500 007, Telangana, India.
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31
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Packianathan S, Arun T, Raman N. DNA interaction and efficient antimicrobial activities of 4N chelating metal complexes. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 148:160-167. [DOI: 10.1016/j.jphotobiol.2015.04.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 03/30/2015] [Accepted: 04/12/2015] [Indexed: 01/22/2023]
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32
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Dhanaraj CJ, Johnson J. Spectral, thermal, electrochemical, biological and DFT studies on nanocrystalline Co(II), Ni(II), Cu(II) and Zn(II) complexes with a tridentate ONO donor Schiff base ligand. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1051475] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Chellaian Justin Dhanaraj
- Department of Chemistry, University College of Engineering, Anna University Constituent College, Nagercoil, India
| | - Jijo Johnson
- Department of Chemistry, University College of Engineering, Anna University Constituent College, Nagercoil, India
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Arun T, Packianathan S, Malarvizhi M, Antony R, Raman N. Bio-relevant complexes of novel N2O2 type heterocyclic ligand: Synthesis, structural elucidation, biological evaluation and docking studies. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 149:93-102. [PMID: 26057019 DOI: 10.1016/j.jphotobiol.2015.05.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Revised: 05/27/2015] [Accepted: 05/28/2015] [Indexed: 01/20/2023]
Abstract
Organic and inorganic entities [Cu(II), Co(II), Ni(II) and Zn(II)] have been bridged by N2O2 type heterocyclic imine (CN) ligand for the synthesis of novel organic-inorganic bridged complexes of the type [M(H2L)]. The synthesized complexes were characterized by spectral techniques such as FT-IR, UV-visible, (1)H NMR, (13)C NMR, EPR, ESI-Mass, elemental analysis, magnetic susceptibility and molar conductivity measurements. The metal complexes adopt square planar geometrical arrangement around the metal ions. DNA binding ability of these complexes has been explored by different techniques viz. electronic absorption, fluorescence, cyclic voltammetry, differential pulse voltammetry and viscosity measurements. These studies prove that CT DNA interaction of the complexes follows intercalation mode. The oxidative cleavage of the complexes with pUC19 DNA has been investigated by gel electrophoresis. Molecular docking calculations have been performed to understand the nature of binding of the complexes with DNA. Moreover, the anti-pathogenic actions of the complexes were tested in vitro against few bacteria and fungi by disk diffusion method. The data reveal that the complexes have higher anti-pathogenic activity than the ligand.
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Affiliation(s)
- T Arun
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India
| | - S Packianathan
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India
| | - M Malarvizhi
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India
| | - R Antony
- Organometallics and Materials Chemistry Lab, IIT-Bombay, Powai, Mumbai 400076, India
| | - N Raman
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India.
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Inamdar PR, Sheela A. Exploration of DNA binding mode, chemical nuclease, cytotoxic and apoptotic potentials of diketone based oxovanadium(IV) complexes. Int J Biol Macromol 2015; 76:269-78. [PMID: 25720830 DOI: 10.1016/j.ijbiomac.2015.02.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 02/16/2015] [Accepted: 02/17/2015] [Indexed: 01/01/2023]
Abstract
Two diketone based oxovanadium complexes, viz., bis(4,4,4-trifluoro-1-phenylbutane-1,3-dionato)oxovanadium(IV) (1) and bis(1,1,1-trifluoropentane-2,4-dionato)oxovanadium(IV) (2), have been synthesized and characterized by spectroscopic and analytical techniques. The DNA binding and the cleaving ability of the complexes is assessed by UV-vis spectroscopy, fluorescence spectroscopy, viscometry and gel electrophoretic studies. The DNA binding constant values (Kb) are found to be 1.95 ± 0.16 × 10(3)M(-1) for complex 1 and 1.064 ± 0.17 × 10(3)M(-1) for complex 2, respectively. Based on the results of the spectral and viscosity studies, it is observed that the complexes, interestingly, have preferred minor groove binding with DNA. Further, the concentration-dependent oxidative cleavage pattern of pBR322 in the presence of the activating reagent, hydrogen peroxide, has also been discussed. In addition, the complexes have shown moderate cytotoxic activity by inducing apoptosis against the cervical cancer cell line, HeLa. The results of in silico analysis and logP predictions are found to be in good agreement with the experimental observations. Thus, synthesized oxovanadium complexes have displayed promising DNA binding behavior and DNA cleavage activity with moderately cytotoxic nature.
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Affiliation(s)
- Poonam Rajiv Inamdar
- Materials Chemistry Division, School of Advanced Sciences, VIT University, Vellore, 632014, Tamil Nadu, India
| | - Angappan Sheela
- Materials Chemistry Division, School of Advanced Sciences, VIT University, Vellore, 632014, Tamil Nadu, India.
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