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Balsa LM, Solernó LM, Rodriguez MR, Parajón-Costa BS, Gonzalez-Baró AC, Alonso DF, Garona J, León IE. Cu(II)-acylhydrazone complex, a potent and selective antitumor agent against human osteosarcoma: Mechanism of action studies over in vitro and in vivo models. Chem Biol Interact 2023; 384:110685. [PMID: 37666443 DOI: 10.1016/j.cbi.2023.110685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 08/05/2023] [Accepted: 08/26/2023] [Indexed: 09/06/2023]
Abstract
Osteosarcoma (OS) is a frequent bone cancer, affecting largely children and young adults. Cisplatin (CDDP) has been efficacious in the treatment of different cancer such us OS but the development of chemoresistance and important side effects leading to therapeutic failure. Novel therapies including copper compounds have shown to be potentially effective as anticancer drugs and one alternative to usually employed platinum compounds. The goal of this work is the evaluation of the in vitro and in vivo antitumoral activity and dilucidate the molecular target of a Cu(II) cationic complex containing a tridentate hydrazone ligand, CuHL for short, H2L=N'-'-(2-hydroxy-3-methoxybenzylidene)thiophene-2-carbohydrazide, against human OS MG-63 cells. Anticancer activity on MG-63 cell line was evaluated in OS monolayer and spheroids. CuHL significantly impaired cell viability in both models (IC50 2D: 2.1 ± 0.3 μM; 3D: 9.1 ± 1.0 μM) (p < 0.001). Additional cell studies demonstrated the copper compound inhibits cell proliferation and conveys cells to apoptosis, determined by flow cytometry. CuHL showed a great genotoxicity, evaluated by comet assay. Proteomic analysis by Orbitrap Mass Spectometry identified 27 differentially expressed proteins: 17 proteins were found overexpressed and 10 underexpressed in MG-63 cells after the CuHL treatment. The response to unfolded protein was the most affected biological process. In addition, in vivo antitumor effects of the compound were evaluated on human OS tumors xenografted in nude mice. CuHL treatment, at a dose of 2 mg/kg i.p., given three times/week for one month, significantly inhibited the progression of OS xenografts and was associated to a reduction in mitotic index and to an increment of tumor necrosis (p < 0.01). Administration of standard-of-care cytotoxic agent CDDP, following the same treatment schedule as CuHL, failed to impair OS growth and progression.
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Affiliation(s)
- Lucia M Balsa
- CEQUINOR (UNLP, CCT-CONICET La Plata, Asociado a CIC), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Blvd. 120 N° 1465, La Plata, 1900, Argentina
| | - Luisina M Solernó
- Centro de Oncología Molecular y Traslacional (COMTra), Universidad Nacional de Quilmes, Argentina; Centro de Medicina Traslacional (Unidad 6), Hospital de Alta Complejidad en Red El Cruce "Dr. Néstor Carlos Kirchner" S.A.M.I.C, Argentina
| | - Maria R Rodriguez
- CEQUINOR (UNLP, CCT-CONICET La Plata, Asociado a CIC), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Blvd. 120 N° 1465, La Plata, 1900, Argentina
| | - Beatriz S Parajón-Costa
- CEQUINOR (UNLP, CCT-CONICET La Plata, Asociado a CIC), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Blvd. 120 N° 1465, La Plata, 1900, Argentina
| | - Ana C Gonzalez-Baró
- CEQUINOR (UNLP, CCT-CONICET La Plata, Asociado a CIC), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Blvd. 120 N° 1465, La Plata, 1900, Argentina
| | - Daniel F Alonso
- Centro de Oncología Molecular y Traslacional (COMTra), Universidad Nacional de Quilmes, Argentina
| | - Juan Garona
- Centro de Oncología Molecular y Traslacional (COMTra), Universidad Nacional de Quilmes, Argentina; Centro de Medicina Traslacional (Unidad 6), Hospital de Alta Complejidad en Red El Cruce "Dr. Néstor Carlos Kirchner" S.A.M.I.C, Argentina
| | - Ignacio E León
- CEQUINOR (UNLP, CCT-CONICET La Plata, Asociado a CIC), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Blvd. 120 N° 1465, La Plata, 1900, Argentina; Cátedra de Fisiopatología, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115, La Plata, 1900, Argentina.
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Balsa LM, Rodriguez MR, Ferraresi-Curotto V, Parajón-Costa BS, Gonzalez-Baró AC, León IE. Finding New Molecular Targets of Two Copper(II)-Hydrazone Complexes on Triple-Negative Breast Cancer Cells Using Mass-Spectrometry-Based Quantitative Proteomics. Int J Mol Sci 2023; 24:ijms24087531. [PMID: 37108690 PMCID: PMC10139133 DOI: 10.3390/ijms24087531] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/14/2023] [Accepted: 03/16/2023] [Indexed: 04/29/2023] Open
Abstract
Breast cancer is the most common cancer in women, with a high incidence estimated to reach 2.3 million by 2030. Triple-Negative Breast Cancer (TNBC) is the greatest invasive class of breast cancer with a poor prognosis, due to the side-effects exerted by the chemotherapy used and the low effectivity of novel treatments. In this sense, copper compounds have shown to be potentially effective as antitumor agents, attracting increasing interest as alternatives to the usually employed platinum-derived drugs. Therefore, the aim of this work is to identify differentially expressed proteins in MDA-MB-231 cells exposed to two copper(II)-hydrazone complexes using label-free quantitative proteomics and functional bioinformatics strategies to identify the molecular mechanisms through which these copper complexes exert their antitumoral effect in TNBC cells. Both copper complexes increased proteins involved in endoplasmic reticulum stress and unfolded protein response, as well as the downregulation of proteins related to DNA replication and repair. One of the most relevant anticancer mechanisms of action found for CuHL1 and CuHL2 was the down-regulation of gain-of-function-mutant p53. Moreover, we found a novel and interesting effect for a copper metallodrug, which was the down-regulation of proteins related to lipid synthesis and metabolism that could lead to a beneficial decrease in lipid levels.
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Affiliation(s)
- Lucia M Balsa
- CEQUINOR (UNLP, CCT-CONICET La Plata, Asociado a CIC), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata 1900, Argentina
| | - María R Rodriguez
- CEQUINOR (UNLP, CCT-CONICET La Plata, Asociado a CIC), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata 1900, Argentina
| | - Verónica Ferraresi-Curotto
- Instituto de Física La Plata, IFLP (UNLP, CCT-CONICET La Plata), Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata 1900, Argentina
| | - Beatriz S Parajón-Costa
- CEQUINOR (UNLP, CCT-CONICET La Plata, Asociado a CIC), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata 1900, Argentina
| | - Ana C Gonzalez-Baró
- CEQUINOR (UNLP, CCT-CONICET La Plata, Asociado a CIC), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata 1900, Argentina
| | - Ignacio E León
- CEQUINOR (UNLP, CCT-CONICET La Plata, Asociado a CIC), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata 1900, Argentina
- Cátedra de Fisiopatología, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata 1900, Argentina
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Burgos-López Y, Balsa LM, Piro OE, León IE, García-Tojal J, Echeverría GA, González-Baró AC, Parajón-Costa BS. Tridentate acylhydrazone copper(II) complexes with heterocyclic bases as coligands. Synthesis, spectroscopic studies, crystal structure and cytotoxicity assays. Polyhedron 2022. [DOI: 10.1016/j.poly.2021.115621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Balsa LM, Rodriguez MR, Parajón-Costa BS, González-Baró AC, Lavecchia MJ, León IE. Anticancer Activity and Mechanism of Action Evaluation of an Acylhydrazone Cu(II) Complex toward Breast Cancer Cells, Spheroids, and Mammospheres. ChemMedChem 2021; 17:e202100520. [PMID: 34750978 DOI: 10.1002/cmdc.202100520] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 11/04/2021] [Indexed: 12/12/2022]
Abstract
The purpose of this work was to screen the anticancer activity and mechanisms of action of Cu(II)-acylhydrazone complex [Cu(HL)(H2 O)](NO3 )⋅H2 O, (CuHL), to find a potential novel agent for breast chemotherapies. Cytotoxicity studies on MCF7 cells demonstrated that CuHL has stronger anticancer properties than cisplatin over breast cancer cell models. Computational simulations showed that CuHL could interact in the minor groove of the DNA dodecamer, inducing a significant genotoxic effect on both cancer cells from 0.5 to 1 μM. In this sense, molecular docking and molecular dynamics simulations showed that the compound could interact with 20S proteasome subunits. Also, cell proteasome experiments using breast cancer cells revealed that the complex can inhibit proteasomal activity. Moreover, CuHL induced apoptosis in breast cancer cells at very low micromolar concentrations (0.5-2.5 μM) and displayed relevant anticancer activity over spheroids derived from MCF7 cells. Ultimately, CuHL diminished the number of mammospheres formed, disturbing their morphology and size.
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Affiliation(s)
- Lucia M Balsa
- Centro de Química Inorgánica (CEQUINOR, CONICET-UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bvd. 120 N°1465, B1900AVV, La Plata, Argentina
| | - Maria R Rodriguez
- Centro de Química Inorgánica (CEQUINOR, CONICET-UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bvd. 120 N°1465, B1900AVV, La Plata, Argentina
| | - Beatriz S Parajón-Costa
- Centro de Química Inorgánica (CEQUINOR, CONICET-UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bvd. 120 N°1465, B1900AVV, La Plata, Argentina
| | - Ana C González-Baró
- Centro de Química Inorgánica (CEQUINOR, CONICET-UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bvd. 120 N°1465, B1900AVV, La Plata, Argentina
| | - Martin J Lavecchia
- Centro de Química Inorgánica (CEQUINOR, CONICET-UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bvd. 120 N°1465, B1900AVV, La Plata, Argentina
| | - Ignacio E León
- Centro de Química Inorgánica (CEQUINOR, CONICET-UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bvd. 120 N°1465, B1900AVV, La Plata, Argentina
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Rodríguez MR, Lavecchia MJ, Parajón-Costa BS, González-Baró AC, González-Baró MR, Cattáneo ER. DNA cleavage mechanism by metal complexes of Cu(II), Zn(II) and VO(IV) with a schiff-base ligand. Biochimie 2021; 186:43-50. [PMID: 33865903 DOI: 10.1016/j.biochi.2021.04.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 03/31/2021] [Accepted: 04/08/2021] [Indexed: 11/26/2022]
Abstract
Metal ions and metal complexes are important components of nucleic acid biochemistry, participating both in regulation of gene expression and as therapeutic agents. Three new transition metal complexes of copper(II), zinc(II) and oxidovanadium(IV) with a ligand derived from o-vanillin and thiophene were previously synthesized and their antitumor properties were studied in our laboratory. To elucidate some molecular mechanisms tending to explain the cytotoxic effects observed over tumor cells, we investigated the interaction of these complexes with DNA by gel electrophoresis, UV-Vis spectroscopy, docking studies and molecular dynamics simulations. Our spectroscopy and computational results have shown that all of them were able to bind to DNA, Cu(II) complex is located in the minor groove while Zn(II) and oxidovanadium(IV) complexes act as major groove binding molecules. Interestingly, only the Cu(II) complex caused double-strand DNA nicks, consistent with its higher cytotoxic activities previously observed in tumor cell lines. We propose that the DNA-complex interaction destabilize the molecule either disrupting the phosphodiester bonds or impairing DNA replication, giving those complexes strong antitumor potential.
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Affiliation(s)
- María R Rodríguez
- CEQUINOR (Centro de Química Inorgánica "Prof. Dr. Pedro J. Aymonino"), Consejo Nacional de Investigaciones Científicas y Técnicas -CCT-La Plata, Universidad Nacional de La Plata, Bvd. 120 N 1469, La Plata, Argentina
| | - Martín J Lavecchia
- CEQUINOR (Centro de Química Inorgánica "Prof. Dr. Pedro J. Aymonino"), Consejo Nacional de Investigaciones Científicas y Técnicas -CCT-La Plata, Universidad Nacional de La Plata, Bvd. 120 N 1469, La Plata, Argentina
| | - Beatriz S Parajón-Costa
- CEQUINOR (Centro de Química Inorgánica "Prof. Dr. Pedro J. Aymonino"), Consejo Nacional de Investigaciones Científicas y Técnicas -CCT-La Plata, Universidad Nacional de La Plata, Bvd. 120 N 1469, La Plata, Argentina
| | - Ana C González-Baró
- CEQUINOR (Centro de Química Inorgánica "Prof. Dr. Pedro J. Aymonino"), Consejo Nacional de Investigaciones Científicas y Técnicas -CCT-La Plata, Universidad Nacional de La Plata, Bvd. 120 N 1469, La Plata, Argentina
| | - María R González-Baró
- INIBIOLP (Instituto de Investigaciones Bioquímicas de La Plata Rodolfo R. Brenner), Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Médicas, Universidad Nacional de La Plata 60 y 120 S/N, La Plata, Buenos Aires, Argentina
| | - Elizabeth R Cattáneo
- INIBIOLP (Instituto de Investigaciones Bioquímicas de La Plata Rodolfo R. Brenner), Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Médicas, Universidad Nacional de La Plata 60 y 120 S/N, La Plata, Buenos Aires, Argentina.
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Piro OE, Echeverría GA, Parajón-Costa BS, Baran EJ. A new acesulfamato complex: [Cu(acesulfamato)2(H2O)4]. Structural and spectroscopic characterization. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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León IE, Ruiz MC, Franca CA, Parajón-Costa BS, Baran EJ. Metvan, bis(4,7-Dimethyl-1,10-phenanthroline)sulfatooxidovanadium(IV): DFT and Spectroscopic Study-Antitumor Action on Human Bone and Colorectal Cancer Cell Lines. Biol Trace Elem Res 2019; 191:81-87. [PMID: 30519799 DOI: 10.1007/s12011-018-1597-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 11/28/2018] [Indexed: 10/27/2022]
Abstract
The complex bis(4,7-dimethyl-1,10-phenantroline)sulfatooxidovanadium(IV), commonly known as Metvan, was prepared using a known synthetic procedure. Its optimized molecular structure was obtained by DFT calculations, as it was impossible to grow single crystals adequate for a crystallographic study. The complex was also characterized by a detailed analysis of its infrared spectrum, supported by the theoretical calculations, and also by some data derived from its Raman spectrum. In addition, cytotoxicity studies were performed using human osteosarcoma (MG-63) and human colorectal adenocarcinoma (HT-29) cell lines. The results show that Metvan impaired cell viability of both cancer cell lines in a low concentration range (0.25-5.0 μM).
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Affiliation(s)
- Ignacio E León
- Centro de Química Inorgánica (CEQUINOR/CONICET, CICPBA, UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bvd. 120 No. 1465, 1900, La Plata, Argentina
| | - María C Ruiz
- Centro de Química Inorgánica (CEQUINOR/CONICET, CICPBA, UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bvd. 120 No. 1465, 1900, La Plata, Argentina
| | - Carlos A Franca
- Centro de Química Inorgánica (CEQUINOR/CONICET, CICPBA, UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bvd. 120 No. 1465, 1900, La Plata, Argentina
| | - Beatriz S Parajón-Costa
- Centro de Química Inorgánica (CEQUINOR/CONICET, CICPBA, UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bvd. 120 No. 1465, 1900, La Plata, Argentina
| | - Enrique J Baran
- Centro de Química Inorgánica (CEQUINOR/CONICET, CICPBA, UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bvd. 120 No. 1465, 1900, La Plata, Argentina.
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Rodríguez MR, Balsa LM, Del Plá J, García-Tojal J, Pis-Diez R, Parajón-Costa BS, León IE, González-Baró AC. Synthesis, characterization, DFT calculations and anticancer activity of a new oxidovanadium(iv) complex with a ligand derived from o-vanillin and thiophene. NEW J CHEM 2019. [DOI: 10.1039/c9nj02092f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
New vanadium complex was synthesized and fully characterized showing promising anticancer activity on triple negative breast cancer cells.
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Affiliation(s)
| | - Lucía M. Balsa
- CEQUINOR (CONICET-CCT La Plata, UNLP)
- B1900AVV La Plata
- Argentina
| | - Julián Del Plá
- CEQUINOR (CONICET-CCT La Plata, UNLP)
- B1900AVV La Plata
- Argentina
| | | | | | | | - Ignacio E. León
- CEQUINOR (CONICET-CCT La Plata, UNLP)
- B1900AVV La Plata
- Argentina
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Rodríguez MR, Del Plá J, Balsa LM, León IE, Piro OE, Echeverría GA, García-Tojal J, Pis-Diez R, Parajón-Costa BS, González-Baró AC. Cu(ii) and Zn(ii) complexes with a poly-functional ligand derived from o-vanillin and thiophene. Crystal structure, physicochemical properties, theoretical studies and cytotoxicity assays against human breast cancer cells. NEW J CHEM 2019. [DOI: 10.1039/c8nj06274a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New ML2 complexes were extensively characterized showing stability in solution and promising anti-tumoral results, particularly for CuL2.
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Affiliation(s)
| | - Julián Del Plá
- CEQUINOR (CONICET-CCT La Plata, UNLP)
- B1900AVV La Plata
- Argentina
| | - Lucía M. Balsa
- CEQUINOR (CONICET-CCT La Plata, UNLP)
- B1900AVV La Plata
- Argentina
| | - Ignacio E. León
- CEQUINOR (CONICET-CCT La Plata, UNLP)
- B1900AVV La Plata
- Argentina
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Baran EJ, Piro OE, Echeverría GA, Parajón-Costa BS. Structural and IR-spectroscopic characterization of pyridinium acesulfamate, a monoclinic twin. Zeitschrift für Naturforschung B 2018. [DOI: 10.1515/znb-2018-0074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe crystal structure of pyridinium 6-methyl-1,2,3,-oxathiazine-4(3H)-one-2,2-dioxide [(C5NH6)(C4H4NO4S)], for short, pyH(ace), was determined by X-ray diffraction methods. It crystallizes as a twin in the monoclinic space groupP21/cwitha=6.9878(9),b=7.2211(7),c=21.740(2) Å,β=91.67(1)° andZ=4 molecules per unit cell. The structure was determined employing 1599 reflections withI>2σ(I) from one of the twin domains and refined employing 2092 reflections from both crystal domains to an agreement R1 factor of 0.0466. Besides electrostatic attractions, intermolecular pyH···O=C(ace) hydrogen bonds stabilize the acesulfamate anion and the pyridinium cation into planar discrete units parallel to the (100) crystal plane. The units form stacks of alternating ace−and pyH+ions along theaaxis that favors inter-ring π–π interactions. The Fourier transform-infrared (FT-IR) spectrum of the compound was recorded and is briefly discussed. Some comparisons with related pyridinium saccharinate salts are also made.
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Affiliation(s)
- Enrique J. Baran
- Facultad de Ciencias Exactas, Centro de Química Inorgánica (CEQUINOR/CONICET-CCT-La Plata, UNLP) , Universidad Nacional de La Plata , Bvd. 120, No. 1465 , 1900-La Plata , Argentina
| | - Oscar E. Piro
- Facultad de Ciencias Exactas, Departamento de Física and Instituto IFLP (CONICET-CCT-La Plata) , Universidad Nacional de La Plata , 1900-La Plata , Argentina
| | - Gustavo A. Echeverría
- Facultad de Ciencias Exactas, Departamento de Física and Instituto IFLP (CONICET-CCT-La Plata) , Universidad Nacional de La Plata , 1900-La Plata , Argentina
| | - Beatriz S. Parajón-Costa
- Facultad de Ciencias Exactas, Centro de Química Inorgánica (CEQUINOR/CONICET-CCT-La Plata, UNLP) , Universidad Nacional de La Plata , Bvd. 120, No. 1465 , 1900-La Plata , Argentina
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Rodríguez MR, Del Plá J, Piro OE, Echeverría GA, Espino G, Pis-Diez R, Parajón-Costa BS, González-Baró AC. Structure, tautomerism, spectroscopic and DFT study of o-vanillin derived Schiff bases containing thiophene ring. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.03.120] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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León IE, Etcheverry SB, Parajón-Costa BS, Baran EJ. Spectroscopic Characterization of an Oxovanadium(IV) Complex of Oxodiacetic Acid and 2,2’-Bipyridine. Bioactivity on Osteoblast-Like Cells in Culture. J MEX CHEM SOC 2017. [DOI: 10.29356/jmcs.v57i3.204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The oxovanadium(IV) complex of oxodiacetic acid (H<sub>2</sub>ODA) and 2,2’-bipyridine (bipy) of stoichiometry [VO(ODA)(bipy)]⋅H<sub>2</sub>O, was thoroughly characterized by infrared, Raman and electronic spectroscopies. The biological activity of the complex on the cell proliferation was tested on osteoblast-like cells (MC3T3E1 osteoblastic mouse calvaria-derived cells and UMR106 rat osteosarcoma-derived cells) in culture. The complex caused inhibition of cellular proliferation in both osteoblast-like cells in culture, but its action was statistically stronger in the tumoral cells. This effect was specially marked with increasing concentrations of the complex. Based on these preliminary biological results, [VO(ODA)(bipy)]⋅H<sub>2</sub>O can be considered as a good candidate to be further investigated in relation to cancer treatment.
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Echeverría GA, Piro OE, Parajón-Costa BS, Baran EJ. Structural and IR-spectroscopic characterization of cadmium and lead(II) acesulfamates. Zeitschrift für Naturforschung B 2017. [DOI: 10.1515/znb-2017-0116] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Cadmium and lead(II) acesulfamate, Cd(C4H4NO4S)2·2H2O and Pb(C4H4NO4S)2, were prepared by the reaction of acesulfamic acid and the respective metal carbonates in aqueous solution, and characterized by elemental analysis. Their crystal structures were determined by single crystal X-ray diffraction methods. The Cd(II) compound crystallizes in the monoclinic space group P21/c with Z=4 and the corresponding Pb(II) salt in the triclinic space group P1̅ with Z=2. In both salts, acesulfamate acts both as a bi-dentate ligand through its nitrogen and carbonyl oxygen atoms and also as a mono-dentate ligand through this same oxygen atom, giving rise to polymeric structures; in the Pb(II) salt the ligand also binds the cation through its sulfoxido oxygen atoms. The FTIR spectra of the compounds were recorded and are briefly discussed. Some comparisons with other related acesulfamate and saccharinate complexes are made.
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Affiliation(s)
- Gustavo A. Echeverría
- Facultad de Ciencias Exactas , Departamento de Física and Instituto IFLP (CONICET- CCT-La Plata) , Universidad Nacional de La Plata , 1900-La Plata , Argentina
| | - Oscar E. Piro
- Facultad de Ciencias Exactas , Departamento de Física and Instituto IFLP (CONICET- CCT-La Plata) , Universidad Nacional de La Plata , 1900-La Plata , Argentina
| | - Beatriz S. Parajón-Costa
- Facultad de Ciencias Exactas, Centro de Química Inorgánica (CEQUINOR/CONICET- CCT-La Plata, UNLP) , Universidad Nacional de La Plata , Bvd. 120, N° 1465, 1900-La Plata , Argentina
| | - Enrique J. Baran
- Facultad de Ciencias Exactas, Centro de Química Inorgánica (CEQUINOR/CONICET- CCT-La Plata, UNLP) , Universidad Nacional de La Plata , Bvd. 120, N° 1465, 1900-La Plata , Argentina
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Pis-Diez R, Echeverría GA, Piro OE, Jios JL, Parajón-Costa BS. A structural, spectroscopic and theoretical study of an o-vanillin Schiff base derivative involved in enol-imine and keto-amine tautomerism. NEW J CHEM 2016. [DOI: 10.1039/c5nj01039j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The potassium salt of the Schiff base derived from o-vanillin and taurine is involved in enol-imine (I) and keto-amine (II) tautomerism. Both tautomeric forms coexist in the crystal and they are stabilized by strong O–H⋯N and O⋯H–N intramolecular hydrogen bonds.
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Affiliation(s)
| | - Gustavo A. Echeverría
- Departamento de Física
- FCE (UNLP) and IFLP (CONICET, CCT-La Plata)
- CC 67
- La Plata
- Argentina
| | - Oscar E. Piro
- Departamento de Física
- FCE (UNLP) and IFLP (CONICET, CCT-La Plata)
- CC 67
- La Plata
- Argentina
| | - Jorge L. Jios
- Unidad PLAPIMU-LASEISIC (UNLP-CIC)
- Departamento de Química
- FCE (UNLP)
- La Plata
- Argentina
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15
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Baran EJ, Parajón-Costa BS, Echeverría GA, Piro OE. Synthesis, structural and spectroscopic characterization of thallium(I) acesulfamate. Maced J Chem Chem Eng 2015. [DOI: 10.20450/mjcce.2015.630] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
<p><strong>SYNTHESIS, STRUCTURAL AND SPECTROSCOPIC CHARACTERIZATION OF THALLIUM(I) ACESULFAMATE</strong></p><p><strong> </strong></p><p> The new acesulfamate salt, TlC<sub>4</sub>H<sub>4</sub>NO<sub>4</sub>S, was prepared by reaction of acesulfamic acid and thallium(I) carbonate in aqueous solution. Its crystal and molecular structure was determined by single crystal X-ray diffraction methods. The substance crystallizes in the monoclinic space group <em>P2<sub>1</sub>/a</em>, with unit cell parameters <em>a </em>= 7.5844(4) Å, <em>b</em> = 9.7268(5) Å, <em>c</em> = 10.8105(5) Å, <em>β</em> = 105.174(6)°, and <em>Z</em>=4 molecules per unit cell, and is isostructural with the corresponding sodium, potassium, rubidium and cesium salts. The FTIR and Raman spectra of the compound are also recorded and briefly discussed.</p>
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León IE, Parajón-Costa BS, Franca CA, Etcheverry SB, Baran EJ. A new oxidovanadium(IV) complex of oxodiacetic acid and dppz: spectroscopic and DFT study. Antitumor action on MG-63 human osteosarcoma cell line. Biol Trace Elem Res 2015; 164:198-204. [PMID: 25534289 DOI: 10.1007/s12011-014-0206-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 12/10/2014] [Indexed: 10/24/2022]
Abstract
The oxidovanadium(IV) complex of oxodiacetic acid (H2ODA) and dppz (dipyrido[3,2-a:2',3'-c] phenazine) of stoichiometry [VO(ODA)(dppz)]·3H2O could be synthesized for the first time by reaction between [VO(ODA)(H2O)2] and dppz. It was characterized by infrared and electronic spectroscopies. Its optimized molecular structure was obtained by DFT calculations, as it was impossible to grow single crystals adequate for crystallographic studies. The antitumor action of the complex on MG-63 human osteosarcoma cell line was also investigated. It was found that it caused a concentration-related inhibitory effect in the concentration range between 5 and 25 μM and diminished the cell viability ca. 45% in the range from 25 to 100 μM, without dose/response effects in this range. These biological effects are, in general, similar to those previously reported for the related [VO(ODA)(ophen)]·1.5H2O complex.
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Affiliation(s)
- Ignacio E León
- Cátedra de Bioquímica Patológica, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 1900, La Plata, Argentina
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17
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Castellano EE, Piro OE, Parajón-Costa BS, Baran EJ. Crystal Structure and Vibrational Behaviour of Tetraaqua-di(nicotinamide)M(II)-Saccharinates, with M(II) = Co, Ni, Zn. ACTA ACUST UNITED AC 2014. [DOI: 10.1515/znb-2002-0611] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The crystal structures of [M(nic)2 (H2O)4](sac)2 (nic = nocotinamide; sac = saccharinate anion) with M = Co(II), Ni(II) and Zn(II), have been determined at 116 K by single-crystal X-ray diffractometry. The compounds crystallize in the triclinic space group P1̅ with Z = 1, and the M(II) cations present a slightly distorted MN2O4 octahedral environment, with equatorially coordinated water molecules and axially pyridine N-bound nicotinamide ligands. The saccharinate anions act as counteranions, and are not part of the first coordination sphere. Some comparisons with related structures have been made and the most important features of their IR spectra discussed.
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Affiliation(s)
- Eduardo E. Castellano
- Instituto de Fisica de São Carlos, Universidade de São Paulo, 13560 São Carlos (SP), Brazil
| | - Oscar E. Piro
- Departamento de Física and Instituto IFLP (CONICET), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 1900 La Plata, Argentina
| | - Beatriz S. Parajón-Costa
- Centro de Química Inorgánica (CEQUINOR, CONICET/UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C. Correo 962, 1900 La Plata, Argentina
| | - Enrique J. Baran
- Centro de Química Inorgánica (CEQUINOR, CONICET/UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C. Correo 962, 1900 La Plata, Argentina
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18
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Parajón-Costa BS, Echeverría GA, Piro OE, Baran EJ. Synthesis and Characterization of a Zinc(II) Complex of Bispicen. Zeitschrift für Naturforschung B 2014. [DOI: 10.5560/znb.2013-3193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The synthesis of a Zn(II) complex of bispicen, the tetradentate ligand N,N′-bis(2-pyridylmethyl)- ethylenediamine, of composition [Zn(bispicen)Cl(H2O)]2[ZnCl4] is reported. Its crystal and molecular structure was determined by single-crystal X-ray diffraction methods. It crystallizes in the monoclinic space group C2=c with Z =4 molecules per unit cell. The Zn(II) cation in the [Zn(bispicen)Cl(H2O)]+ complex is in a distorted octahedral environment, coordinated to a neutral bispicen molecule acting as a tetradentate ligand through its two amine nitrogen atoms, at cis positions, and its two pyridyl N atoms, at trans positions. The six-fold coordination is completed by a chloride ion and a water molecule. The tetrahedral [ZnCl4]2- counter-ion lies on a crystallographic twofold axis. The complex was further characterized by FTIR spectroscopy, and its vibrational behavior compared with that of the dihydrated tetrahydrochloride of free bispicen
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Affiliation(s)
- Beatriz S. Parajón-Costa
- Facultad de Ciencias Exactas, Centro de Química Inorgánica (CEQUINOR/CONICET - CCT-La Plata, UNLP), Universidad Nacional de La Plata, C. Correo 962, 1900 La Plata, Argentina
| | - Gustavo A. Echeverría
- Facultad de Ciencias Exactas, Departamento de Física and Instituto IFLP (CONICET – CCT-La Plata), Universidad Nacional de La Plata, 1900 La Plata, Argentina
| | - Oscar E. Piro
- Facultad de Ciencias Exactas, Departamento de Física and Instituto IFLP (CONICET – CCT-La Plata), Universidad Nacional de La Plata, 1900 La Plata, Argentina
| | - Enrique J. Baran
- Facultad de Ciencias Exactas, Centro de Química Inorgánica (CEQUINOR/CONICET – CCT-La Plata, UNLP), Universidad Nacional de La Plata, C. Correo 962, 1900 La Plata, Argentina
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19
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Echeverría GA, Piro OE, Parajón-Costa BS, Baran EJ. Synthesis and Characterization of Ammonium Acesulfamate. Zeitschrift für Naturforschung B 2014. [DOI: 10.5560/znb.2014-4061] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Ammonium acesulfamate, (NH4)C4H4NO4S, was prepared by the reaction of acesulfamic acid and ammonium carbonate in aqueous solution, and characterized by elemental analysis and 1H and 13C NMR spectroscopy. Its crystal and molecular structure was determined by single-crystal X-ray diffraction methods. The substance crystallizes in the orthorhombic space group Pnma with Z = 4 molecules per unit cell. The NH4+ ion generates medium to strong hydrogen bonds with the carbonylic oxygen, the iminic nitrogen and the sulfonyl oxygen atoms of the acesulfamate anion. The FTIR spectrum of the compound was also recorded and is briefly discussed.
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Affiliation(s)
- Gustavo A. Echeverría
- Facultad de Ciencias Exactas, Departamento de Física and Instituto IFLP (CONICET-CCT-La Plata), Universidad Nacional de La Plata, 1900 La Plata, Argentina
| | - Oscar E. Piro
- Facultad de Ciencias Exactas, Departamento de Física and Instituto IFLP (CONICET-CCT-La Plata), Universidad Nacional de La Plata, 1900 La Plata, Argentina
| | - Beatriz S. Parajón-Costa
- Facultad de Ciencias Exactas, Centro de Química Inorgánica (CEQUINOR/CONICET-CCT-La Plata, UNLP), Universidad Nacional de La Plata, C. Correo 962, 1900-La Plata, Argentina
| | - Enrique J. Baran
- Facultad de Ciencias Exactas, Centro de Química Inorgánica (CEQUINOR/CONICET-CCT-La Plata, UNLP), Universidad Nacional de La Plata, C. Correo 962, 1900-La Plata, Argentina
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20
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León IE, Etcheverry SB, Parajón-Costa BS, Baran EJ. Bis(oxalato)dioxovanadate(V) and bis(oxalato)oxoperoxo-vanadate(V) complexes: spectroscopic characterization and biological activity. Biol Trace Elem Res 2013; 155:295-300. [PMID: 24026441 DOI: 10.1007/s12011-013-9787-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Accepted: 08/06/2013] [Indexed: 11/26/2022]
Abstract
Two structurally related vanadium(V) complexes, K3[VO2(C2O4)2] · 3H2O and K3[VO(O2)(C2O4)2] · 1/2H2O, were thoroughly characterized by infrared, Raman, and electronic spectroscopies. The effect of both complexes on the viability of the human MG-63 osteosarcoma cells was tested using the MTT assay. The monoperoxo complex shows a very strong antiproliferative activity (at 100-μM concentration, this complex diminished the cell viability ca. 80 %), whereas the dioxo complex was inactive.
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Affiliation(s)
- Ignacio E León
- Cátedra de Bioquímica Patológica, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 1900, La Plata, Argentina
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21
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Parajón-Costa BS, Baran EJ. Vibrational spectra of bis(maltolato)zinc(II), an interesting insulin mimetic agent. Spectrochim Acta A Mol Biomol Spectrosc 2013; 113:337-339. [PMID: 23743039 DOI: 10.1016/j.saa.2013.04.119] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 04/15/2013] [Accepted: 04/24/2013] [Indexed: 06/02/2023]
Abstract
The FTIR and FT-Raman spectra of the zinc(II) complex of 3-hydroxy-2-methyl-4-pyrone (maltol), bis(maltolato)zinc(II), were recorded and briefly discussed by comparison with the spectra of uncoordinated maltol and with some related maltolato complexes.
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Affiliation(s)
- Beatriz S Parajón-Costa
- Centro de Química Inorgánica (CEQUINOR, CONICET/UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C. Correo 962, 1900 La Plata, Argentina
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22
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Parajón-Costa BS, Baran EJ. Vibrational and electronic spectra of [Cu(L-ornithinato)2Cl2]·2H2O. Spectrochim Acta A Mol Biomol Spectrosc 2012; 98:252-255. [PMID: 22964244 DOI: 10.1016/j.saa.2012.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Revised: 07/31/2012] [Accepted: 08/07/2012] [Indexed: 06/01/2023]
Abstract
The FTIR and FT-Raman spectra of a Cu(II) complex of ornithine of composition [Cu(L-ornithinato)(2)Cl(2)]·2H(2)O were recorded and analyzed in relation to its structural peculiarities and by comparison with the spectra of ornithine hydrochloride and of other bis(amino acid) complexes of Cu(II). The electronic spectrum of the complex is also briefly discussed.
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Affiliation(s)
- Beatriz S Parajón-Costa
- Centro de Química Inorgánica (CEQUINOR/CONICET, UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C. Correo 962, 1900-La Plata, Argentina
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23
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León IE, Etcheverry SB, Parajón-Costa BS, Baran EJ. Spectroscopic characterization of an oxovanadium(IV) complex of oxodiacetic acid and o-phenanthroline. Bioactivity on osteoblast-like cells in culture. Biol Trace Elem Res 2012; 147:403-7. [PMID: 22246791 DOI: 10.1007/s12011-012-9322-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Accepted: 01/02/2012] [Indexed: 10/14/2022]
Abstract
The oxovanadium(IV) complex of oxodiacetic acid (H(2)ODA) and o-phenanthroline of stoichiometry [VO(ODA)(ophen)]·1.5H(2)O, which presents the interesting tridentate OOO coordination, was thoroughly characterized by infrared, Raman, and electronic spectroscopies. The biological activity of the complex on the cell proliferation was tested on osteoblast-like cells (MC3T3E1 osteoblastic mouse calvaria-derived cells and UMR106 rat osteosarcoma-derived cells) in culture. The complex caused inhibition of cellular proliferation in both osteoblast cell lines in culture, but the cytotoxicity was stronger in the normal (MC3T3E1) than in the tumoral (UMR106) osteoblasts.
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Affiliation(s)
- Ignacio E León
- Cátedra de Bioquímica Patológica, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina
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24
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González-Baró AC, Pis-Diez R, Parajón-Costa BS, Rey NA. Spectroscopic and theoretical study of the o-vanillin hydrazone of the mycobactericidal drug isoniazid. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2011.10.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Parajón-Costa BS, Baran EJ. Vibrational spectra of bis(maltolato)oxovanadium(IV): a potent insulin mimetic agent. Spectrochim Acta A Mol Biomol Spectrosc 2011; 78:133-135. [PMID: 20934377 DOI: 10.1016/j.saa.2010.09.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2010] [Revised: 08/06/2010] [Accepted: 09/08/2010] [Indexed: 05/30/2023]
Abstract
The FTIR and FT-Raman spectra of the oxovanadium(IV) complex of 3-hydroxy-2-methyl-4-pyrone (maltol) bis(maltolato)oxovanadium(IV) were recorded and briefly discussed by comparison with the spectra of uncoordinated maltol and with some related species.
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Affiliation(s)
- Beatriz S Parajón-Costa
- Centro de Química Inorgánica (CEQUINOR, CONICET/UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C. Correo 962, 1900 La Plata, Argentina
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Parajón-Costa BS, Baran EJ, Romero J, Sáez-Puche R, Arrambide G, Gambino D. Synthesis and characterization of bistropolonato oxovanadium(IV and V) complexes. J COORD CHEM 2010. [DOI: 10.1080/00958972.2010.531131] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Beatriz S. Parajón-Costa
- a Centro de Química Inorgánica (CEQUINOR/CONICET,UNLP), Facultad de Ciencias Exactas , Universidad Nacional de La Plata , C. Correo 962, 1900-La Plata , Argentina
| | - Enrique J. Baran
- a Centro de Química Inorgánica (CEQUINOR/CONICET,UNLP), Facultad de Ciencias Exactas , Universidad Nacional de La Plata , C. Correo 962, 1900-La Plata , Argentina
| | - Julio Romero
- b Departamento de Química Inorgánica, Facultad de Ciencias Químicas , Universidad Complutense de Madrid , E-28040 Madrid , Spain
| | - Regino Sáez-Puche
- b Departamento de Química Inorgánica, Facultad de Ciencias Químicas , Universidad Complutense de Madrid , E-28040 Madrid , Spain
| | - Gabriel Arrambide
- c Departamento “Estrella Campos”, Cátedra de Química Inorgánica, Facultad de Química , Universidad de la República , Montevideo , Uruguay
| | - Dinorah Gambino
- c Departamento “Estrella Campos”, Cátedra de Química Inorgánica, Facultad de Química , Universidad de la República , Montevideo , Uruguay
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Pis-Diez R, Parajón-Costa BS, Franca CA, Piro OE, Castellano EE, González-Baró AC. Cyclocreatine, an anticancer and neuroprotective agent. Spectroscopic, structural and theoretical study. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.04.042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Arrambide G, Rivadeneira J, Etcheverry SB, Parajón-Costa BS, Gambino D, Baran EJ. Spectroscopic behavior and biological activity of K3[VO(O2)2CO3]∙H2O. Biol Trace Elem Res 2009; 132:176-83. [PMID: 19396406 DOI: 10.1007/s12011-009-8375-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2009] [Accepted: 04/06/2009] [Indexed: 11/25/2022]
Abstract
The potassium salt of the carbonato oxodiperoxovanadate(V) complex, obtained by a known synthetic procedure, was thoroughly characterized by infrared, Raman, and electronic spectroscopy. The bioactivity of the complex on the cell proliferation was tested on osteoblast-like cells (MC3T3E1 osteoblastic mouse calvaria-derived cells and UMR106 rat osteosarcoma-derived cells) in culture. At low doses, the complex is more toxic for the nontransformed osteoblasts than for the tumoral ones, whereas at higher doses the deleterious effects are similar for both cell lines. This peroxo complex seems to be the most toxic compound that has so far been tested on osteoblast-like cells in culture.
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Affiliation(s)
- G Arrambide
- Química Inorgánica, Departamento Estrella Campos, Facultad de Química, Universidad de República, Montevideo, Uruguay
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Castellano EE, Piro OE, Parajón-Costa BS, Baran EJ. Two New Supramolecular Assemblies Obtained by Reaction Between Saccharin and Long-chain Diamines. Zeitschrift für Naturforschung B 2009. [DOI: 10.1515/znb-2009-0908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The crystal structures of heptamethylenediammonium bis(saccharinate) monohydrate, [H3N - (CH2)7 -NH3](sac)2・H2O (1) and octamethylenediammonium bis(saccharinate) hemihydrate, [H3N- (CH2)8-NH3](sac)2・0.5H2O (2), were determined by single-crystal X-ray diffraction methods. Compound 1 crystallizes in the triclinic space group P1̄ with 2 molecules per unit cell, and 2 in the monoclinic space group P21/a with Z = 4. The saccharinate moiety is planar in both compounds presenting bonding characteristics comparable to those found in other saccharinate salts. The ionic crystals are further stabilized by an extensive H-bonding network, which links the anions and cations into an infinite three-dimensional supramolecular assembly. The FTIR spectra of the adducts are briefly discussed in comparison with those of the constituent molecules.
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Affiliation(s)
- Eduardo E Castellano
- Instituto de Fisica de São Carlos, Universidade de São Paulo, 13560 São Carlos (SP), Brazil
| | - Oscar E. Piro
- Departamento de Física and Instituto IFLP (CONICET), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 1900 La Plata, Argentina
| | - Beatriz S. Parajón-Costa
- Centro de Química Inorgánica (CEQUINOR, CONICET/UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C. Correo 962, 1900 La Plata, Argentina
| | - Enrique J. Baran
- Centro de Química Inorgánica (CEQUINOR, CONICET/UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C. Correo 962, 1900 La Plata, Argentina
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González-Baró AC, Pis-Diez R, Piro OE, Parajón-Costa BS. Crystal structures, theoretical calculations, spectroscopic and electrochemical properties of Cr(III) complexes with dipicolinic acid and 1,10-phenantroline. Polyhedron 2008. [DOI: 10.1016/j.poly.2007.10.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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31
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Parajón-Costa BS, Piro OE, Pis-Diez R, Castellano EE, González-Baró AC. Crystal structures, spectroscopic characterization and theoretical calculations of the guanidinium and ammonium salts of the insulin-enhancing anion [VO2(dipic)]−. Polyhedron 2006. [DOI: 10.1016/j.poly.2006.04.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Affiliation(s)
- Beatriz S. Parajón-Costa
- a Centro de Quimica Inorgánica (CEQUINOR), Facultad de Ciencias Exactas , Universidad Nacional de la Plata , C.Correo 962, 1900 , La Plata , Argentina
| | - Ana C. Gonzalez-Baró
- a Centro de Quimica Inorgánica (CEQUINOR), Facultad de Ciencias Exactas , Universidad Nacional de la Plata , C.Correo 962, 1900 , La Plata , Argentina
| | - Enrique J. Baran
- a Centro de Quimica Inorgánica (CEQUINOR), Facultad de Ciencias Exactas , Universidad Nacional de la Plata , C.Correo 962, 1900 , La Plata , Argentina
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dos Santos Claro PC, González-Baró AC, Parajón-Costa BS, Baran EJ. Spectroscopic and Electrochemical Behavior of the Methyl and Ethyl Derivatives of Bis(acetylacetonato) oxovanadium(IV). Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200500123] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Noblía P, Vieites M, Parajón-Costa BS, Baran EJ, Cerecetto H, Draper P, González M, Piro OE, Castellano EE, Azqueta A, López de Ceráin A, Monge-Vega A, Gambino D. Vanadium(V) complexes with salicylaldehyde semicarbazone derivatives bearing in vitro anti-tumor activity toward kidney tumor cells (TK-10): crystal structure of [VVO2(5-bromosalicylaldehyde semicarbazone)]. J Inorg Biochem 2005; 99:443-51. [PMID: 15621276 DOI: 10.1016/j.jinorgbio.2004.10.019] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2004] [Revised: 09/29/2004] [Accepted: 10/18/2004] [Indexed: 11/28/2022]
Abstract
As a contribution to the development of novel vanadium complexes with pharmacologically interesting moieties, new dioxovanadium(V) semicarbazone complexes with the formula cis-VO(2)L, where L=5-bromosalicylaldehyde semicarbazone and 2-hydroxynaphtalen-1-carboxaldehyde semicarbazone have been synthesized and characterized by (1)H and (13)C NMR, Raman and FTIR spectroscopies. Results were compared with those previously reported for other three analogous complexes of this series. The five complexes were tested in three different human tumor cell lines for bioactivity as potential anti-tumor agents, showing selective cytotoxicity on TK-10 cell line. Results showed that structural modifications on the semicarbazone moiety could have a significant effect on the anti-tumor activity of the vanadium complexes. In addition, the electrochemical behavior of all the complexes was studied. No apparent correlation could be demonstrated between reduction potentials of the complexes and their anti-tumor activities. The molecular structure of the novel [V(V)O(2)(5-bromosalicylaldehyde semicarbazone)] complex was solved by X-ray diffraction methods. The vanadium atom shows a distorted square pyramidal coordination sphere. The (VO(2))(+) cation is coordinated to a nearly planar (L)(-) anion acting as a tridentate ligand through both oxygen and one nitrogen atoms.
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Affiliation(s)
- Pabla Noblía
- Cátedra de Química Inorgánica, Facultad de Química, Universidad de la República, Gral. Flores 2124, C. C. 1157, 11800 Montevideo, Uruguay
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Gonzalez-Baró A, Castellano E, Piro O, Parajón-Costa BS. Synthesis, crystal structure and spectroscopic characterization of a novel bis (oxo-bridged) dinuclear vanadium(V)–dipicolinic acid complex. Polyhedron 2005. [DOI: 10.1016/j.poly.2004.09.032] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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González-Baró AC, Piro OE, Parajón-Costa BS, Baran EJ, Castellano EE. Crystal Structure and Spectroscopic Behaviour of Oxoetoxo-bis(5,7-dichloro-8-hydroxyquinolinato)vanadium(V). Monatshefte fuer Chemie 1998. [DOI: 10.1007/pl00010102] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Baran EJ, Parajón-Costa BS, Rojo T, Sáez-Puche R, Fernández F, Tótaro RM, Apella MC, Etcheverry SB, Torre MH. Spectroscopic, magnetic, and electrochemical behavior of the copper(II) complex of carnosine. J Inorg Biochem 1995; 58:279-89. [PMID: 7500089 DOI: 10.1016/0162-0134(94)00061-e] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Different physicochemical studies were undertaken with polycrystalline samples of the complex [Cu2(carnosine)2(H2O)2].2H2O. The infrared spectrum was discussed in comparison with that of free carnosine and on the basis of the known structural data. Magnetic susceptibility measurements were performed between 4.2 and 300 K, showing an effective magnetic moment of 1.79 BM. Both the electronic (reflectance) and ESR spectra were compatible with the existence of a dx2-y2 ground state. The axial reversed ESR spectrum could be explained on the basis of a very weak interdimeric coupling mechanism. The electrochemical behavior, investigated by cyclic voltammetry, shows that the complex possesses a very high redox stability. The possible SOD-like activity was tested using the NBT/superoxide reduction assay. The results show a negligible SOD activity.
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Affiliation(s)
- E J Baran
- Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Argentina
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