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Paliwal K, Haldar P, Antharjanam PKS, Kumar M. Synthesis, Characterization, DNA/HSA Interaction, and Cytotoxic Activity of a Copper(II) Thiolate Schiff Base Complex and Its Corresponding Water-Soluble Stable Sulfinato-O Complex Containing Imidazole as a Co-ligand. ACS OMEGA 2023; 8:21948-21968. [PMID: 37360467 PMCID: PMC10286277 DOI: 10.1021/acsomega.3c01853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 05/22/2023] [Indexed: 06/28/2023]
Abstract
A Cu(II) thiolato complex [CuL(imz)] (1) (H2L = o-HOC6H4C(H)=NC6H4SH-o) and the corresponding water-soluble stable sulfinato-O complex [CuL'(imz)] (2) (H2L' = o-HOC6H4C(H)=NC6H4S(=O)OH) were synthesized and characterized using physicochemical techniques. Compound 2 is found to be a dimer in the solid state as characterized using single-crystal X-ray crystallography. XPS studies clearly showed the differences in the sulfur oxidation states in 1 and 2. Both compounds are found to be monomers in solution as revealed from their four-line X-band electron paramagnetic resonance spectra in CH3CN at room temperature (RT). 1-2 were tested to assess their ability to exhibit DNA binding and cleavage activity. Spectroscopic studies and viscosity experiments suggest that 1-2 bind to CT-DNA through the intercalation mode having moderate binding affinity (Kb ∼ 104 M-1). This is further supported by molecular docking studies of complex 2 with CT-DNA. Both complexes display significant oxidative cleavage of pUC19 DNA. Complex 2 also showed hydrolytic DNA cleavage. The interaction of 1-2 with HSA revealed that they have strong ability to quench the intrinsic fluorescence of HSA by a static quenching mechanism (kq ∼ 1013 M-1 s-1). This is further complemented by Förster resonance energy transfer studies that revealed binding distances of r = 2.85 and 2.75 nm for 1 and 2, respectively, indicating high potential for energy transfer from HSA to complex. 1-2 were capable of inducing conformational changes of HSA at secondary and tertiary levels as observed from synchronous and three-dimensional fluorescence spectroscopy. Molecular docking studies with 2 indicate that it forms strong hydrogen bonds with Gln221 and Arg222 located near the entrance of site-I of HSA. 1-2 showed potential toxicity in human cervical cancer HeLa cells, lung cancer A549 cells, and cisplatin-resistant breast cancer MDA-MB-231 cells and appeared to be most potent against HeLa cells (IC50 = 2.04 μM for 1 and 1.86 μM for 2). In HeLa cells, 1-2 mediated cell cycle arrest in S and G2/M phases, which progressed into apoptosis. Apoptotic features seen from Hoechst and AO/PI staining, damaged cytoskeleton actin viewed from phalloidin staining, and increased caspase-3 activity upon treatment with 1-2 collectively suggested that they induced apoptosis in HeLa cells via caspase activation. This is further supported by western blot analysis of the protein sample extracted from HeLa cells treated with 2.
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Affiliation(s)
- Kumudini Paliwal
- Department
of Chemical Engineering, Birla Institute
of Technology and Science-Pilani, K.K. Birla Goa Campus, Zuarinagar 403726, Goa, India
| | - Paramita Haldar
- Department
of Chemical Engineering, Birla Institute
of Technology and Science-Pilani, K.K. Birla Goa Campus, Zuarinagar 403726, Goa, India
| | | | - Manjuri Kumar
- Department
of Chemical Engineering, Birla Institute
of Technology and Science-Pilani, K.K. Birla Goa Campus, Zuarinagar 403726, Goa, India
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2
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Gómez-Pantoja M, González-Pérez JI, Martín A, Mena M, Santamaría C, Temprado M. Structural Diversity in the Reactions of Dimetallic Alkyl Titanium Oxides with Isonitriles and Nitriles. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fandos R, Rodríguez-Delgado A, Rodríguez A, Romero I, Organero JÁ, Álvarez E. Pathways to Metal–Ligand Cooperation in Quinoline-Based Titanium(IV) Pincers: Nonelectrophilic N-methylation, Deprotonation, and Dihydropyridine Formation. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00105] [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]
Affiliation(s)
- Rosa Fandos
- Instituto de Nanociencia, Nanotecnología y Materiales Moleculares (INAMOL), Facultad de Ciencias del Medio Ambiente, Universidad de Castilla-La Mancha, Avda. Carlos III, s/n, 45071 Toledo, Spain
| | - Antonio Rodríguez-Delgado
- Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla, C/Américo Vespucio, 49, Isla de la Cartuja, 41092 Sevilla, Spain
| | - Ana Rodríguez
- ETS Ingenieros Industriales, Campus de Ciudad Real, Universidad de Castilla-La Mancha, Avda. Camilo José Cela, 3, 13071 Ciudad Real, Spain
| | - Iván Romero
- Instituto de Nanociencia, Nanotecnología y Materiales Moleculares (INAMOL), Facultad de Ciencias del Medio Ambiente, Universidad de Castilla-La Mancha, Avda. Carlos III, s/n, 45071 Toledo, Spain
| | - Juan Ángel Organero
- Instituto de Nanociencia, Nanotecnología y Materiales Moleculares (INAMOL), Facultad de Ciencias del Medio Ambiente, Universidad de Castilla-La Mancha, Avda. Carlos III, s/n, 45071 Toledo, Spain
| | - Eleuterio Álvarez
- Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla, C/Américo Vespucio, 49, Isla de la Cartuja, 41092 Sevilla, Spain
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Gómez-Pantoja M, González-Pérez JI, Martín A, Mena M, Santamaría C, Temprado M. Reactivity of Tuck-over Titanium Oxo Complexes with Isocyanides. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00212] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- María Gómez-Pantoja
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28805 Alcalá de Henares, Madrid, Spain
- Instituto de Investigación Química “Andrés M. del Río” (IQAR), Universidad de Alcalá, Campus Universitario, 28805 Alcalá de Henares, Madrid, Spain
| | - Juan. I. González-Pérez
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28805 Alcalá de Henares, Madrid, Spain
- Instituto de Investigación Química “Andrés M. del Río” (IQAR), Universidad de Alcalá, Campus Universitario, 28805 Alcalá de Henares, Madrid, Spain
| | - Avelino Martín
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28805 Alcalá de Henares, Madrid, Spain
- Instituto de Investigación Química “Andrés M. del Río” (IQAR), Universidad de Alcalá, Campus Universitario, 28805 Alcalá de Henares, Madrid, Spain
| | - Miguel Mena
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28805 Alcalá de Henares, Madrid, Spain
- Instituto de Investigación Química “Andrés M. del Río” (IQAR), Universidad de Alcalá, Campus Universitario, 28805 Alcalá de Henares, Madrid, Spain
| | - Cristina Santamaría
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28805 Alcalá de Henares, Madrid, Spain
- Instituto de Investigación Química “Andrés M. del Río” (IQAR), Universidad de Alcalá, Campus Universitario, 28805 Alcalá de Henares, Madrid, Spain
| | - Manuel Temprado
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Campus Universitario, 28805 Alcalá de Henares, Madrid, Spain
- Instituto de Investigación Química “Andrés M. del Río” (IQAR), Universidad de Alcalá, Campus Universitario, 28805 Alcalá de Henares, Madrid, Spain
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Synthesis of polar unique 3d metal-imine complexes of salicylidene anthranilate sodium salt. Homogeneous catalytic and corrosion inhibition performance. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.04.024] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Absalan Y, Fortalnova EA, Lobanov NN, Dobrokhotova EV, Kovalchukova OV. Ti (IV) complexes with some diphenols as precursors for TiO2 nano-sized catalysts. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.02.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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7
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Lawrence MA, Green KA, Nelson PN, Lorraine SC. Review: Pincer ligands—Tunable, versatile and applicable. Polyhedron 2018. [DOI: 10.1016/j.poly.2017.08.017] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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8
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González-Pérez JI, Martín A, Mena M, Santamaría C. C–H Activation on an Oxo-Bridged Dititanium Complex: From Alkyl to μ-Alkylidene Functionalities. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00381] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Juan I. González-Pérez
- Departamento de
Química
Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28805 Alcalá de Henares, Madrid, Spain
| | - Avelino Martín
- Departamento de
Química
Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28805 Alcalá de Henares, Madrid, Spain
| | - Miguel Mena
- Departamento de
Química
Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28805 Alcalá de Henares, Madrid, Spain
| | - Cristina Santamaría
- Departamento de
Química
Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28805 Alcalá de Henares, Madrid, Spain
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2014. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.09.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Sutton CCR, da Silva G, Franks GV. Modeling the IR Spectra of Aqueous Metal Carboxylate Complexes: Correlation between Bonding Geometry and Stretching Mode Wavenumber Shifts. Chemistry 2015; 21:6801-5. [DOI: 10.1002/chem.201406516] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Indexed: 11/09/2022]
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