Synthesis and structure elucidation of new μ-oxamido-bridged dicopper(II) complexes showing in vitro anticancer activity: Evaluation of DNA/protein-binding properties by experiment and molecular docking

Zheng, Kang; Liu, Fang; Wu, Zhi‐Yong; Yan, Cui‐Wei

doi:10.1016/j.jinorgbio.2015.12.023

Cited by 28 publications

(7 citation statements)

References 64 publications

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“…The stock solution of CT-DNA was prepared in 5 mM Tris-HCl/50 mM NaCl buffer at pH 7, which gave A 260 / A 280 nm of ca . 1.8-1.9, indicating that the DNA was sufficiently devoid of protein [ 15 ], and the concentration of DNA per nucleotide was determined from its absorption intensity at 260 nm with a known molar absorption coefficient ( ɛ 260 = 6600 dm 3 ·M −1 ·cm −1 ) [ 16 ]. DNA stock solutions were kept stored at 4°C and used within four days.…”

Section: Methodsmentioning

confidence: 99%

Synthesis and Characterization of Oxidovanadium(IV) Complexes of 2-((E)-(6-Fluorobenzo[d]thiazol-2-ylimino)methyl)-6-methoxyphenol and Their Antimicrobial, Antioxidant, and DNA-Binding Studies

Savithri

Revanasiddappa

2018

Bioinorganic Chemistry and Applications

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Two novel oxidovanadium(IV) complexes with a new bidentate (O- and N-) imine-based ligand 2-((E)-(6-fluorobenzo[d]thiazol-2-ylimino)methyl)-6-methoxyphenol (HL) were synthesized under in situ experimental condition where VOSO4 acts as a kinetic template in the ratio 2 : 1 (L : M) and mixed ligand complex using 1,10-phenanthroline (phen) in 1 : 1 : 1 (L : M : phen) ratio. The synthesized compounds were structurally characterized by microanalysis, magnetic susceptibility, FTIR, electronic spectra, TG/DTA, ESR, and molar conductance studies. Based on the spectral studies, the complexes have the general composition [VO(L)2] (C1) and [VO(L)phen] (C2) in a square pyramid geometrical fashion. The synthesized compounds were primarily screened for their in vitro growth inhibiting activity against different strains of bacteria, namely, E. coli, B. subtilis, S. aureus, and P. aeruginosa by the disc diffusion method. Also, the antifungal activity was determined against C. albicans and A. niger by the Bateman poisoned technique. The in vitro antioxidant activity of all the compounds was determined by DPPH free radical-scavenging assay. Intercalative mode of DNA-binding properties of the oxidovanadium(IV) complexes with calf-thymus DNA (CT-DNA) was investigated using UV, fluorescence spectra, and viscosity measurements.

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Section: Methodsmentioning

confidence: 99%

Synthesis and Characterization of Oxidovanadium(IV) Complexes of 2-((E)-(6-Fluorobenzo[d]thiazol-2-ylimino)methyl)-6-methoxyphenol and Their Antimicrobial, Antioxidant, and DNA-Binding Studies

Savithri

Revanasiddappa

2018

Bioinorganic Chemistry and Applications

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“…Thus, investigation of BSA and drug interactions is crucial to discover the mode of drug transport to the target site. Because of 78% structural homology of bovine serum albumin with human serum, BSA is taken as a reference protein , binder agent for investigation.…”

Section: Resultsmentioning

confidence: 99%

Development of Anticancer Activity of the Pt(II) Complex with N-Heterocyclic Amine: Its In Vitro Pharmacokinetics with Thiol and Thio-Ethers, DNA and BSA Binding, and Cell Cycle Arrest

Pan

Mitra

Mukherjee

et al. 2021

ACS Appl. Bio Mater.

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A dichloro Pt(II) complex with N-heterocyclic amine cis-Pt(PIEAM)Cl2, C-1 (where PIEAM = 1-(2-aminoethyl)piperidine) was synthesized and hydrolyzed to the corresponding [Pt(PIEAM)(OH2)2]2+ C-2 to explore its bioactivity and cytotoxic property. Biorelevant sulfur-containing small tripeptide glutathione (GSH)- and amino acid dl-methionine (dl-meth)-substituted complexes [Pt(PIEAM)(GSH)] C-3 and [Pt(PIEAM)(dl-meth)]+2 C-4 were synthesized and characterized. In vitro pharmacokinetic reactions of complex C-2 → C-3 and C-4 with GSH and dl-meth, respectively, were studied under pseudo-first-order reaction conditions. The high and negative entropy of activation (ΔS ⧧) and low and positive enthalpy of activation (ΔH ⧧) values were deduced from the Eyring equation to propose an associative mechanism. To find out the biotransformation of complex C-1, C-2, and Pt(II)–S chelates C-3 and C-4 to Pt(II)-DNA adducts, DNA binding affinity of C-1–C-4 was examined by UV–visible spectroscopy, fluorescence quenching, and gel electrophoresis methods. BSA binding activity of these complexes was emphasized for their biological importance and the “drug reservoir” activity. Anticancer activity of these complexes on HEp 2 (laryngeal), MDA-MB-231 (breast), and A549 (lung) cancer cell lines was found to be remarkable as compared to the recognized anticancer drugs such as cisplatin, carboplatin, and oxaliplatin. Cell cycle arrest was also explored on HEp 2 cells of the complexes at a concentration corresponding to IC50 value and displayed significant cell death at the sub-G1 phase.

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“…The stock solution of CT-DNA was prepared in 5 mM Tris-HCl/50 mM NaCl buffer at pH 7, which gave 260 / 280 nm of ca. 1.8-1.9, indicating that the DNA was sufficiently devoid of protein [36], and the concentration of DNA was determined from its absorption intensity at 260 nm ( 260 = 6600 M −1 cm −1 ) [37]. All the stock solutions were stored at 4 ∘ C and used within four days.…”

Section: Dna-binding Experimentsmentioning

confidence: 99%

Synthesis and Characterization of Cobalt(III) and Copper(II) Complexes of 2-((E)-(6-Fluorobenzo[d]thiazol-2-ylimino) methyl)-4-chlorophenol: DNA Binding and Nuclease Studies—SOD and Antimicrobial Activities

Savithri

Kumar

Vivek³

et al. 2018

International Journal of Spectroscopy

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A bidentate (N- and O-) imine-based ligand(L1)and its metal complexes of types [CuII(L1)2](C1), [CuII(L1)(Phen)](C2), [CoIII(L1)2](C3), and [CoIII(L1)(Phen)](C4)(L1= 2-((E)-(6-fluorobenzo[d]thiazol-2-ylimino)methyl)-4-chlorophenol and phen = 1,10-phenanthroline) were synthesized as potential chemotherapeutic drug candidates. The prepared complexes were structurally characterized by spectral techniques (NMR, FT-IR, LC-MS, EPR, and electronic absorption), thermogravimetric analysis (TGA/DTA), magnetic moment, and CHNO elemental analysis. Spectroscopic studies suggested the distorted octahedral structure for all complexes.In vitrobioassay studies include binding and nuclease activities of the ligand and its complexes with target calf thymus- (CT-) DNA were carried out by employing UV-Vis, fluorescence spectroscopy, viscosity, and gel electrophoresis techniques. The extent of binding propensity was determined quantitatively byKbandKsvvalues which revealed a higher binding affinity for C2and C4as compared to C1and C3. In addition, the scavenging superoxide anion free radical (O∙-2) activity of metal complexes was determined by nitroblue tetrazolium (NBT) light reduction assay. Molecular docking studies with DNA and SOD enzyme were also carried out on these compounds. The antimicrobial study has shown that all the compounds are potential antibacterial agents against Gram-negative bacterial strains and better antifungal agents with respect to standard drugs used.

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Synthesis and structure elucidation of new μ-oxamido-bridged dicopper(II) complexes showing in vitro anticancer activity: Evaluation of DNA/protein-binding properties by experiment and molecular docking

Cited by 28 publications

References 64 publications

Synthesis and Characterization of Oxidovanadium(IV) Complexes of 2-((E)-(6-Fluorobenzo[d]thiazol-2-ylimino)methyl)-6-methoxyphenol and Their Antimicrobial, Antioxidant, and DNA-Binding Studies

Synthesis and Characterization of Oxidovanadium(IV) Complexes of 2-((E)-(6-Fluorobenzo[d]thiazol-2-ylimino)methyl)-6-methoxyphenol and Their Antimicrobial, Antioxidant, and DNA-Binding Studies

Development of Anticancer Activity of the Pt(II) Complex with N-Heterocyclic Amine: Its In Vitro Pharmacokinetics with Thiol and Thio-Ethers, DNA and BSA Binding, and Cell Cycle Arrest

Synthesis and Characterization of Cobalt(III) and Copper(II) Complexes of 2-((E)-(6-Fluorobenzo[d]thiazol-2-ylimino) methyl)-4-chlorophenol: DNA Binding and Nuclease Studies—SOD and Antimicrobial Activities

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