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Caro-Ramírez JY, Franca CA, Lavecchia M, Naso LG, Williams PAM, Ferrer EG. Exploring the potential anti-thyroid activity of Acetyl-L-carnitine: Lactoperoxidase inhibition profile, iodine complexation and scavenging power against H 2O 2. Experimental and theoretical studies. Spectrochim Acta A Mol Biomol Spectrosc 2024; 313:124098. [PMID: 38460232 DOI: 10.1016/j.saa.2024.124098] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 02/07/2024] [Accepted: 02/27/2024] [Indexed: 03/11/2024]
Abstract
L-Acetylcarnitine (ALC), a versatile compound, has demonstrated beneficial effects in depression, Alzheimer's disease, cognitive impairment, and other conditions. This study focuses on its antithyroid activity. The precursor molecule, L-carnitine, inhibited the uptake of triiodothyronine (T3) and thyroxine (T4), and it is possible that ALC may reduce the iodination process of T3 and T4. Currently, antithyroid drugs are used to control the excessive production of thyroid hormones (TH) through various mechanisms: (i) forming electron donor-acceptor complexes with molecular iodine, (ii) eliminating hydrogen peroxide, and (iii) inhibiting the enzyme thyroid peroxidase. To understand the pharmacological properties of ALC, we investigated its plausible mechanisms of action. ALC demonstrated the ability to capture iodine (Kc = 8.07 ± 0.32 x 105 M-1), inhibit the enzyme lactoperoxidase (LPO) (IC50 = 17.60 ± 0.76 µM), and scavenge H2O2 (39.82 ± 0.67 mM). A comprehensive physicochemical characterization of ALC was performed using FTIR, Raman, and UV-Vis spectroscopy, along with theoretical DFT calculations. The inhibition process was assessed through fluorescence spectroscopy and vibrational analysis. Docking and molecular dynamics simulations were carried out to predict the binding mode of ALC to LPO and to gain a better understanding into the inhibition process. Furthermore, albumin binding experiments were also conducted. These findings highlight the potential of ALC as a therapeutic agent, providing valuable insights for further investigating its role in the treatment of thyroid disorders.
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Affiliation(s)
- Janetsi Y Caro-Ramírez
- Centro de Química Inorgánica (CEQUINOR-CONICET-UNLP- Asoc CICPBA)-Departamento de Química-Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Boulevard 120 entre 60 y 64, C.C.962- (B1900AVV) -1900 La Plata, Argentina
| | - Carlos A Franca
- Centro de Química Inorgánica (CEQUINOR-CONICET-UNLP- Asoc CICPBA)-Departamento de Química-Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Boulevard 120 entre 60 y 64, C.C.962- (B1900AVV) -1900 La Plata, Argentina
| | - Martín Lavecchia
- Centro de Química Inorgánica (CEQUINOR-CONICET-UNLP- Asoc CICPBA)-Departamento de Química-Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Boulevard 120 entre 60 y 64, C.C.962- (B1900AVV) -1900 La Plata, Argentina
| | - Luciana G Naso
- Centro de Química Inorgánica (CEQUINOR-CONICET-UNLP- Asoc CICPBA)-Departamento de Química-Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Boulevard 120 entre 60 y 64, C.C.962- (B1900AVV) -1900 La Plata, Argentina
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR-CONICET-UNLP- Asoc CICPBA)-Departamento de Química-Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Boulevard 120 entre 60 y 64, C.C.962- (B1900AVV) -1900 La Plata, Argentina
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR-CONICET-UNLP- Asoc CICPBA)-Departamento de Química-Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Boulevard 120 entre 60 y 64, C.C.962- (B1900AVV) -1900 La Plata, Argentina.
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Actis Dato AB, Martinez VR, Velez Rueda JO, Portiansky EL, De Giusti V, Ferrer EG, Williams PAM. Improvement of the cardiovascular effect of methyldopa by complexation with Zn(II): Synthesis, characterization and mechanism of action. J Trace Elem Med Biol 2024; 81:127327. [PMID: 37890445 DOI: 10.1016/j.jtemb.2023.127327] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 10/03/2023] [Accepted: 10/19/2023] [Indexed: 10/29/2023]
Abstract
BACKGROUND the antihypertensive drug α-methyldopa (MD) stands as one of the extensively used medications for managing hypertension during pregnancy. Zinc deprivation has been associated with many diseases. In this context, the synthesis of a Zn coordination complex [Zn(MD)(OH)(H2O)2]·H2O (ZnMD) provide a promising alternative pathway to improve the biological properties of MD. METHODS ZnMD was synthesized and physicochemically characterized. Fluorescence spectral studies were conducted to examine the binding of both, the ligand and the metal with bovine serum albumin (BSA). MD, ZnMD, and ZnCl2 were administered to spontaneous hypertensive rats (SHR) rats during 8 weeks and blood pressure and echocardiographic parameters were determined. Ex vivo assays were conducted to evaluate levels of reactive oxygen species (ROS), thiobarbituric acid reactive substances (TBARS), and nitric oxide (NO). Cross-sectional area (CSA) and collagen levels of left ventricular cardiomyocytes were also assessed. Furthermore, the expression of NAD(P)H oxidase subunits (gp91phox and p47phox) and Superoxide Dismutase 1 (SOD1) was quantified through western blot analysis. RESULTS The complex exhibited a moderate affinity for binding with BSA showing a spontaneous interaction (indicated by negative ΔG values) and moderate affinity (determined by affinity constant values). The binding process involved the formation of Van der Waals forces and hydrogen bonds. Upon treatment with MD and ZnMD, a reduction in the systolic blood pressure in SHR was observed, being ZnMD more effective than MD (122 ± 8.1 mmHg and 145 ± 5.6 mmHg, at 8th week of treatment, respectively). The ZnMD treatment prevented myocardial hypertrophy, improved the heart function and reduced the cardiac fibrosis, as evidenced by parameters such as left ventricular mass, fractional shortening, and histological studies. In contrast, MD did not show noticeable differences in these parameters. ZnMD regulates negatively the oxidative damage by reducing levels of ROS and lipid peroxidation, as well as the cardiac NAD(P)H oxidase, and increasing SOD1 expression, while MD did not show significant effect. Moreover, cardiac nitric oxide levels were greater in the ZnMD therapy compared to MD treatment. CONCLUSION Both MD and ZnMD have the potential to be transported by albumin. Our findings provide important evidence suggesting that this complex could be a potential therapeutic drug for the treatment of hypertension and cardiac hypertrophy and dysfunction.
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Affiliation(s)
- Agustin B Actis Dato
- CEQUINOR-CONICET-CICPBA-UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N◦ 1465, 1900 La Plata, Argentina
| | - Valeria R Martinez
- CIC-CONICET-UNLP, Facultad de Médicas, Universidad Nacional de La Plata, 60 y 120, 1900 La Plata, Argentina.
| | - Jorge O Velez Rueda
- CIC-CONICET-UNLP, Facultad de Médicas, Universidad Nacional de La Plata, 60 y 120, 1900 La Plata, Argentina
| | - Enrique L Portiansky
- Laboratorio de Análisis de Imágenes, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, 60 y 118, 1900 La Plata, Argentina
| | - Verónica De Giusti
- CIC-CONICET-UNLP, Facultad de Médicas, Universidad Nacional de La Plata, 60 y 120, 1900 La Plata, Argentina
| | - Evelina G Ferrer
- CEQUINOR-CONICET-CICPBA-UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N◦ 1465, 1900 La Plata, Argentina
| | - Patricia A M Williams
- CEQUINOR-CONICET-CICPBA-UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N◦ 1465, 1900 La Plata, Argentina.
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Restrepo Guerrero AG, Martinez VR, Velez Rueda JO, Portiansky EL, De Giusti V, Ferrer EG, Williams PAM. Complexation of the Antihypertensive Drug Olmesartan with Zn: In Vivo Antihypertensive and Cardiac Effects. Biol Trace Elem Res 2024; 202:246-257. [PMID: 37086356 DOI: 10.1007/s12011-023-03670-8] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 04/13/2023] [Indexed: 04/23/2023]
Abstract
This study is based on the premise that the application of chemical synthesis strategies to structurally modify commercial drugs by complexation with biometals is a valid procedure to improve their biological effects. Our purpose is to synthesize a compound with greater efficacy than the original drug, able to enhance its antihypertensive and cardiac pharmacological activity. Herein, the structure of the coordination compound of Zn(II) and the antihypertensive drug olmesartan, [Zn(Olme)(H2O)2] (ZnOlme), is presented. After 8 weeks of treatment in SHR male rats, ZnOlme displayed a better blood pressure-lowering activity compared with olmesartan, with a noticeable effect even in the first weeks of treatment, while ZnCl2 showed similar results than the control. ZnOlme also reduced left ventricle (LV) weight and left ventricle/tibia length ratio (LV/TL), posterior wall thickness (PWT), and intraventricular septum in diastole (IVSd) suggesting its potential to prevent LV hypertrophy. Besides, ZnOlme reduced interstitial fibrosis (contents of collagen types I and III, responsible for giving rigidity and promoting vascular elasticity, respectively). The recovery of heart function was also evidenced by fractional shortening (diastolic left ventricular/systolic left ventricular) diameter determinations. Furthermore, ZnOlme increased the antioxidant capacity and prevented cardiac oxidative stress: it enhanced the reduction of reactive oxygen species generation, exerted a significant decrease in lipid peroxidation and enhanced glutathione contents in heart tissues compared to the control, Zn, and olmesartan treatments. Our results demonstrate that continuous oral administration of ZnOlme causes a better antihypertensive effect and grants enhancement of cardioprotection through antioxidant activity, in combination with hemodynamic improvement.
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Affiliation(s)
- Andrés G Restrepo Guerrero
- CEQUINOR-CONICET-CICPBA-UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465, 1900, La Plata, Argentina
| | - Valeria R Martinez
- CIC-CONICET-UNLP, Facultad de Médicas, Universidad Nacional de La Plata, 60 y 120, 1900, La Plata, Argentina.
| | - Jorge O Velez Rueda
- CIC-CONICET-UNLP, Facultad de Médicas, Universidad Nacional de La Plata, 60 y 120, 1900, La Plata, Argentina
| | - Enrique L Portiansky
- Laboratorio de Análisis de Imágenes, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, 60 y 118, 1900, La Plata, Argentina
| | - Verónica De Giusti
- CIC-CONICET-UNLP, Facultad de Médicas, Universidad Nacional de La Plata, 60 y 120, 1900, La Plata, Argentina
| | - Evelina G Ferrer
- CEQUINOR-CONICET-CICPBA-UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465, 1900, La Plata, Argentina
| | - Patricia A M Williams
- CEQUINOR-CONICET-CICPBA-UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465, 1900, La Plata, Argentina.
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Gaddi GM, Caro-Ramírez JY, Parente JE, Williams PAM, Ferrer EG. Copper-flavonoid family of complexes involved in alkaline phosphatase activation. Biometals 2023; 36:1221-1239. [PMID: 37258944 DOI: 10.1007/s10534-023-00511-y] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 05/13/2023] [Indexed: 06/02/2023]
Abstract
The flavonoid naringenin and a family of naringenin derivative Cu(II) complexes having phenanthroline-based second ligands were selected to study alkaline phosphatase activation. This enzyme plays a critical role in tissue formation, increasing the inorganic phosphate formation, favoring mineralization, and being essential to producing bone mineralization. The effects of those compounds on the function and structure of the enzyme were evaluated by kinetic measurements, fluorescence, FTIR, and UV-Vis spectroscopies. The results showed that naringenin did not affect alkaline phosphatase activity, having a value of the Michaelis-Menten-constant close to the enzyme (Km = 3.07 × 10-6). The binary complex, Cu(II)-naringenin, and the ternary complex Cu(II)-naringenin-phenanthroline behaved as an enzyme activator in all the concentrations range used in this study. Those complexes increased in c.a. 1.9% the catalytic efficiency concerning enzyme and naringenin. The ternary complex Cu(II)-naringenin-bathophenanthroline, provokes an activator mixed effect, dependent on the substrate concentrations. The different kinetic behavior can be correlated with different conformational changes observed under the interaction with ALP. Fluorescence experiments showed a raising of the binding constant with temperature. FTIR determinations showed that the complex with bathophenanthroline modifies the ALP structure but maintains the helical structure. The other copper complexes provoked a structural unfolding, decreasing the α-helix content. None of them affect the dephosphorylation enzyme ability. Even though the interactions and structural modifications on ALP are different, it is evident that the presence of copper favors enzymatic activity. The observed electrostatic interactions probably benefit the dissociation of the bound phosphate. The results suggest potential biological applications for the studied compounds.
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Affiliation(s)
- Gisela M Gaddi
- CEQUINOR, CONICET-UNLP-Asoc. CICPBA, Faculty of Exact Sciences, National University of La Plata, Bv. 120 No 1465, 1900, La Plata, Argentina
| | - Janetsi Y Caro-Ramírez
- CEQUINOR, CONICET-UNLP-Asoc. CICPBA, Faculty of Exact Sciences, National University of La Plata, Bv. 120 No 1465, 1900, La Plata, Argentina
| | - Juliana E Parente
- CEQUINOR, CONICET-UNLP-Asoc. CICPBA, Faculty of Exact Sciences, National University of La Plata, Bv. 120 No 1465, 1900, La Plata, Argentina
| | - Patricia A M Williams
- CEQUINOR, CONICET-UNLP-Asoc. CICPBA, Faculty of Exact Sciences, National University of La Plata, Bv. 120 No 1465, 1900, La Plata, Argentina
| | - Evelina G Ferrer
- CEQUINOR, CONICET-UNLP-Asoc. CICPBA, Faculty of Exact Sciences, National University of La Plata, Bv. 120 No 1465, 1900, La Plata, Argentina.
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Martinez VR, Martins Lima A, Stergiopulos N, Velez Rueda JO, Islas MS, Griera M, Calleros L, Rodriguez Puyol M, Jaquenod de Giusti C, Portiansky EL, Ferrer EG, De Giusti V, Williams PAM. Effect of the structural modification of Candesartan with Zinc on hypertension and left ventricular hypertrophy. Eur J Pharmacol 2023; 946:175654. [PMID: 36930883 DOI: 10.1016/j.ejphar.2023.175654] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 02/25/2023] [Accepted: 03/09/2023] [Indexed: 03/17/2023]
Abstract
Hypertension is the most common cause of left ventricular hypertrophy, contributing to heart failure progression. Candesartan (Cand) is an angiotensin receptor antagonist widely used for hypertension treatment. Structural modifications were previously performed by our group using Zinc (ZnCand) as a strategy for improving its pharmacological properties. The measurements showed that ZnCand exerts a stronger interaction with the angiotensin II receptor, type 1 (AT1 receptor), reducing oxidative stress and intracellular calcium flux, a mechanism implied in cell contraction. These results were accompanied by the reduction of the contractile capacity of mesangial cells. In vivo experiments showed that the complex causes a significant decrease in systolic blood pressure after 8 weeks of treatment in spontaneously hypertensive rats (SHR). The reduction of heart hypertrophy was evidenced by echocardiography, the histologic cross-sectional area of cardiomyocytes, collagen content, the B-type natriuretic peptide (BNP) marker and connective tissue growth factor (CTGF) and the matrix metalloproteinase 2 (MMP-2) expression. Besides, the complex restored the redox status. In this study, we demonstrated that the complexation with Zn(II) improves the antihypertensive and cardiac effects of the parental drug.
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Affiliation(s)
- Valeria R Martinez
- CEQUINOR-CONICET-CICPBA-UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N◦ 1465, 1900, La Plata, Argentina; CIC-CONICET-UNLP, Facultad de Médicas, Universidad Nacional de La Plata, 60 y 120, 1900, La Plata, Argentina
| | - Augusto Martins Lima
- Laboratory of Hemodynamics & Cardiovascular Technology (LHTC), Institute of Bioengineering (Bâtiment MED), Station 9, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Nikolaous Stergiopulos
- Laboratory of Hemodynamics & Cardiovascular Technology (LHTC), Institute of Bioengineering (Bâtiment MED), Station 9, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Jorge O Velez Rueda
- CIC-CONICET-UNLP, Facultad de Médicas, Universidad Nacional de La Plata, 60 y 120, 1900, La Plata, Argentina
| | - Maria S Islas
- Departamento de Química y Bioquímica, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, 7600, Mar del Plata, Argentina
| | - Mercedes Griera
- Departamento de Fisiología, Universidad de Alcalá, Campus Universitario, 28871, Alcalá de Henares, Madrid, Spain
| | - Laura Calleros
- Departamento de Fisiología, Universidad de Alcalá, Campus Universitario, 28871, Alcalá de Henares, Madrid, Spain
| | - Manuel Rodriguez Puyol
- Departamento de Fisiología, Universidad de Alcalá, Campus Universitario, 28871, Alcalá de Henares, Madrid, Spain
| | - Carolina Jaquenod de Giusti
- CIC-CONICET-UNLP, Facultad de Médicas, Universidad Nacional de La Plata, 60 y 120, 1900, La Plata, Argentina
| | - Enrique L Portiansky
- Laboratorio de Análisis de Imágenes-UNLP, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, 60 y 118, 1900, La Plata, Argentina
| | - Evelina G Ferrer
- CEQUINOR-CONICET-CICPBA-UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N◦ 1465, 1900, La Plata, Argentina
| | - Verónica De Giusti
- CIC-CONICET-UNLP, Facultad de Médicas, Universidad Nacional de La Plata, 60 y 120, 1900, La Plata, Argentina.
| | - Patricia A M Williams
- CEQUINOR-CONICET-CICPBA-UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N◦ 1465, 1900, La Plata, Argentina.
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Caro-Ramírez JY, Rivas MG, Gonzalez PJ, Williams PAM, Naso LG, Ferrer EG. Copper(II) cation and bathophenanthroline coordination enhance therapeutic effects of naringenin against lung tumor cells. Biometals 2022; 35:1059-1076. [PMID: 35931942 DOI: 10.1007/s10534-022-00422-4] [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: 03/24/2022] [Accepted: 07/18/2022] [Indexed: 11/02/2022]
Abstract
The development of new anticancer compounds is one of the challenges of bioinorganic and medicinal chemistry. Naringenin and its metal complexes have been recognized as promising inhibitors of cell proliferation, having enormous potential to act as an antioxidant and antitumorigenic agent. Lung cancer is the second most commonly diagnosed type of cancer. Therefore, this study is devoted to investigate the effects of Cu(II), naringenin (Nar), binary Cu(II)-naringenin complex (CuNar), and the Cu(II)-naringenin containing bathophenanthroline as an auxiliary ligand (CuNarBatho) on adenocarcinoma human alveolar basal epithelial cells (A549 cells) that are used as models for the study of drug therapies against lung cancer. The ternary complex shows selectivity being high cytotoxic against malignant cells. The cell death generated by CuNarBatho involves ROS production, loss of mitochondrial membrane potential, and depletion of GSH level and GSH/GSSG ratio. The structure-relationship activity was assessed by comparison with the reported Cu(II)-naringenin-phenanthroline complex. The CuNarBatho complex was synthesized and characterized by elemental analysis, molar conductivity, mass spectrometry, thermogravimetric measurements and UV-VIS, FT-IR, EPR, Raman and 1H-NMR spectroscopies. In addition, the binding to bovine serum albumin (BSA) was studied at the physiological conditions (pH = 7.4) by fluorescence spectroscopy.
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Affiliation(s)
- Janetsi Y Caro-Ramírez
- Centro de Química Inorgánica (CEQUINOR, UNLP, CONICET, asociado a CICPBA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465 La Plata, CP 1900, Buenos Aires, Argentina
| | - María G Rivas
- Departamento de Física, Facultad de Bioquímica Y Ciencias Biológicas, Universidad Nacional del Litoral and CONICET, S3000ZAA, Santa Fe, Argentina
| | - Pablo J Gonzalez
- Departamento de Física, Facultad de Bioquímica Y Ciencias Biológicas, Universidad Nacional del Litoral and CONICET, S3000ZAA, Santa Fe, Argentina
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR, UNLP, CONICET, asociado a CICPBA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465 La Plata, CP 1900, Buenos Aires, Argentina.
| | - Luciana G Naso
- Centro de Química Inorgánica (CEQUINOR, UNLP, CONICET, asociado a CICPBA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465 La Plata, CP 1900, Buenos Aires, Argentina
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR, UNLP, CONICET, asociado a CICPBA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465 La Plata, CP 1900, Buenos Aires, Argentina.
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Falkievich DB, Martínez Medina JJ, Alegre WS, López Tévez LL, Franca CA, Ferrer EG, Williams PAM. Computational studies, antimicrobial activity, inhibition of biofilm production and safety profile of the cadmium complex of 1,10‐phenanthroline and cyanoguanidine. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | | | - Carlos A. Franca
- CEQUINOR, CONICET/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata La Plata Argentina
| | - Evelina G. Ferrer
- CEQUINOR, CONICET/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata La Plata Argentina
| | - Patricia A. M. Williams
- CEQUINOR, CONICET/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata La Plata Argentina
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Naso LG, Martínez VR, Ferrer EG, Williams PAM. Antimetastatic effects of VOflavonoid complexes on A549 cell line. J Trace Elem Med Biol 2021; 64:126690. [PMID: 33260045 DOI: 10.1016/j.jtemb.2020.126690] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 09/20/2020] [Revised: 10/12/2020] [Accepted: 11/17/2020] [Indexed: 12/25/2022]
Abstract
BACKGROUND Non-small-cell lung cancer (NSCLC) is the most frequent type of lung cancer and more than 90 % of mortality is due to metastasis-related deaths. Flavonoids are considered nutraceuticals due to the variety of pharmacological properties. In this paper, we studied the effects of baicalin, silibinin, apigenin, luteolin, and its oxidovanadium(IV) cation complexes on the viability, adhesion to fibronectin, invasion, and migration on human lung cancer cell line A549. In addition, in order to complete the study of the interaction of VOflavonoids and bovine serum albumin (BSA), the binding ability of silibinin and VOsil to the protein was evaluated. METHOD To establish the non-cytotoxic concentration range of the tested compounds, the cancer cell viability was evaluated using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-tetrazolium bromide (MTT) assay. Cell migration and invasion assays were performed using Boyden chambers and adhesion assay using MTT method. The interaction of compounds with BSA were investigated in physiological buffer (pH = 7.4) by fluorescence spectroscopy. RESULTS All complexes inhibited the metastatic cascade steps to a greater extent than their respective ligands. Likewise, based on binding constant values (Kb) for BSA-silibinin and BSA-VOsil, we can suggest that both compounds can interact with the protein. CONCLUSION Although all the complexes suppressed cell adhesion, invasion and migration, VOlut can be considered as a good candidate to continue the trials because it presented encouraging results as a potential antitumor and antimetastatic agent, and can be transported by BSA.
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Affiliation(s)
- Luciana G Naso
- CEQUINOR-CONICET-CICPBA-UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465, 1900 La Plata, Argentina.
| | - Valeria R Martínez
- CEQUINOR-CONICET-CICPBA-UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465, 1900 La Plata, Argentina
| | - Evelina G Ferrer
- CEQUINOR-CONICET-CICPBA-UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465, 1900 La Plata, Argentina
| | - Patricia A M Williams
- CEQUINOR-CONICET-CICPBA-UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465, 1900 La Plata, Argentina
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Martínez VR, Aguirre MV, Todaro JS, Ferrer EG, Williams PAM. Candesartan and valsartan Zn(ii) complexes as inducing agents of reductive stress: mitochondrial dysfunction and apoptosis. NEW J CHEM 2021. [DOI: 10.1039/d0nj02937h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Candesartan and valsartan Zn(ii) complexes as inducing agents of reductive stress, including mitochondrial dysfunction and apoptosis.
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Affiliation(s)
- Valeria R. Martínez
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP)
- La Plata
- Argentina
| | - María V. Aguirre
- Laboratorio de Investigaciones Bioquímicas
- Facultad de Medicina
- UNNE
- Corrientes
- Argentina
| | - Juan S. Todaro
- Laboratorio de Investigaciones Bioquímicas
- Facultad de Medicina
- UNNE
- Corrientes
- Argentina
| | - Evelina G. Ferrer
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP)
- La Plata
- Argentina
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Martínez VR, Aguirre MV, Todaro JS, Ferrer EG, Williams PAM. Improvement of the Anticancer Activities of Telmisartan by Zn(II) Complexation and Mechanisms of Action. Biol Trace Elem Res 2020; 197:454-463. [PMID: 31863274 DOI: 10.1007/s12011-019-02013-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 09/18/2019] [Accepted: 12/09/2019] [Indexed: 12/19/2022]
Abstract
To improve the anticancer activity of telmisartan, its structure has been modified by Zn(II) complexation giving [Zn(Telm)2(H2O)2]·2H2O (ZnTelm). The cytotoxic effect was measured on the human lung cancer cells (A549) and on the lung fibroblast cells (MRC-5). The complex markedly improved anticancer activity (IC50 75 μM) of telmisartan (IC50 125 μM) or ZnSO4 (IC50 225 μM) and did not show toxicity on non-cancer cells, inducing oxidative stress with cellular ROS generation and GSH/GSSG decrease. Apoptosis was the dominant form of cell death for the complex. The Bax/Bcl-XL ratio was significantly increased as well as caspase-3 activation. Both the complex and the ligand bind to bovine serum albumin (BSA) and can be stored and transported by the protein but the interaction with the complex is greater. Telmisartan binds BSA by hydrophobic interactions while the interaction of ZnTelm occurs through van der Waals forces and hydrogen bonding. Therefore, it can be shown that the coordination complex ZnTelm improved the anticancer activity of the antihypertensive drug telmisartan (IC50 75 μM and 125 μM, respectively) and the interaction with BSA. Graphical Abstract Improvement of the anticancer activities of telmisartan by Zn(II) complexation and mechanisms of action. Intrinsic apoptotic pathway: induction ofoxidative stress and regulation of proteins related to apoptosis. The complex interacted with bovine serum albumin (BSA) and can be stored and transported by the protein.
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Affiliation(s)
- Valeria R Martínez
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP), 120 N° 1465, La Plata, Argentina
| | - María V Aguirre
- Laboratorio de Investigaciones Bioquímicas. Facultad de Medicina. UNNE, Moreno 1240, Corrientes, Argentina
| | - Juan S Todaro
- Laboratorio de Investigaciones Bioquímicas. Facultad de Medicina. UNNE, Moreno 1240, Corrientes, Argentina
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP), 120 N° 1465, La Plata, Argentina
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP), 120 N° 1465, La Plata, Argentina.
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11
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Abstract
Peroxidovanadium(V) and oxidovanadium(IV) compounds have been tested as peroxidase-similar compounds. Their catalytic performance was tested on phenol red and pyrogallol substrates. Bromination kinetic studies revealed Michaelis-Menten behavior with respect to phenol red for both complexes. Catalytic efficiency is ~ 104 M-1 min-1. Both vanadium complexes showed the capacity to oxidize pyrogallol, but only the oxidovanadium (IV) complex follows Michaelis-Menten kinetics with respect to this substrate (Km = 1.05 × 10-3 M). Peroxidovanadium(V) complex displayed a more complex mechanism, and further studies became necessary to elucidate it. The structure-activity relationship was also assessed.
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Affiliation(s)
- Juliana E Parente
- Center of Inorganic Chemistry (CEQUINOR, CONICET-CICPBA-UNLP)-Department of Chemistry-Faculty of Exact Sciences, National University of La Plata, Boulevard 120 e/60 y 64, 1900, B1900AVV, La Plata, Argentina
| | - Patricia A M Williams
- Center of Inorganic Chemistry (CEQUINOR, CONICET-CICPBA-UNLP)-Department of Chemistry-Faculty of Exact Sciences, National University of La Plata, Boulevard 120 e/60 y 64, 1900, B1900AVV, La Plata, Argentina
| | - Evelina G Ferrer
- Center of Inorganic Chemistry (CEQUINOR, CONICET-CICPBA-UNLP)-Department of Chemistry-Faculty of Exact Sciences, National University of La Plata, Boulevard 120 e/60 y 64, 1900, B1900AVV, La Plata, Argentina.
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12
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Naso LG, Martínez Medina JJ, D'Alessandro F, Rey M, Rizzi A, Piro OE, Echeverría GA, Ferrer EG, Williams PAM. Ternary copper(II) complex of 5-hydroxytryptophan and 1,10-phenanthroline with several pharmacological properties and an adequate safety profile. J Inorg Biochem 2019; 204:110933. [PMID: 31825796 DOI: 10.1016/j.jinorgbio.2019.110933] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 09/10/2019] [Revised: 11/12/2019] [Accepted: 11/17/2019] [Indexed: 12/22/2022]
Abstract
We report the synthesis and biological evaluation of a ternary copper complex, [Cu(5HTP)(phen)(H2O)](NO3).2H2O, with the antioxidant agent 5-hydroxytryptophan (5-HTP) and phenanthroline (phen, added to improve its lipophilicity and membrane transport). The crystal structure of the complex was determined by X-ray diffraction methods. The complex showed antioxidant, antimicrobial, antitumor and antimetastatic properties with an adequate safety profile. The interaction of the metal with phen promotes cellular copper accumulation and cytotoxicity on human lung A549 cell line (IC50 = 3.6 μM). Furthermore, the viability of the normal human fetal lung fibroblast cell line (MRC-5) is not altered by the complex. An oxidative stress mechanism for the anticancer effect has been determined: cellular increase of reactive oxygen species (ROS), decrease of the glutathione (GSH) and oxidized GSH (GSSG) ratio and alteration of the mitochondrial potential. The complex also displays antimetastatic activities with inhibition of cell adhesion, invasion and migration. It has not mutagenic behavior and no toxicity on Artemia salina indicating its potential to act as an effective and safety antimicrobial and antitumor drug.
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Affiliation(s)
- Luciana G Naso
- CEQUINOR, CONICET/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465, 1900 La Plata, Argentina.
| | - Juan J Martínez Medina
- Universidad Nacional del Chaco Austral, Comandante Fernández 755, CP: 3700 Presidencia Roque Sáenz Peña, Chaco, Argentina
| | - Franco D'Alessandro
- CEQUINOR, CONICET/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465, 1900 La Plata, Argentina
| | - Marilin Rey
- Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria-Paraje El Pozo, 3000 Santa Fe, Argentina
| | - Alberto Rizzi
- Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria-Paraje El Pozo, 3000 Santa Fe, Argentina
| | - Oscar E Piro
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata y IFLP (CONICET, CCT La Plata), C.C. 67, 1900 La Plata, Argentina
| | - Gustavo A Echeverría
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata y IFLP (CONICET, CCT La Plata), C.C. 67, 1900 La Plata, Argentina
| | - Evelina G Ferrer
- CEQUINOR, CONICET/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465, 1900 La Plata, Argentina
| | - Patricia A M Williams
- CEQUINOR, CONICET/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465, 1900 La Plata, Argentina.
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13
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Martini N, Parente JE, Toledo ME, Escudero GE, Laino CH, Piro OE, Echeverría GA, Williams PAM, Ferrer EG. Antidepressant and antinociceptive activities in animal models and in vitro assessment of the anti-thyroid activity of bis(DL-pyroglutamate)magnesium complex. Pharmacol Rep 2019; 71:1273-1280. [PMID: 31675673 DOI: 10.1016/j.pharep.2019.07.009] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 06/18/2019] [Accepted: 07/25/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND Magnesium is an essential element related with biochemistry of the brain and different types of depression have been associated with its deficiency. METHODS The structure of a novel magnesium bis(DL-pyroglutamate) (Mg(DL-pGlu)2) was elucidated by X-ray crystallography. Wistar rats were used in the in vivo experiments. The antidepressant-like effect was assessed by the forced swim test (FST) and the antinociceptive activity was evaluated using hot plate test. In both, non-specific effects were evaluated by the open field test. Anti-thyroid activity was examined using Lang's method. Albumin binding behavior was evaluated by 3D fluorescence spectroscopy. RESULTS For the Mg(DL-pGlu)2 complex (30 mg/kg), the FST test on Wistar rats revealed a decrease of 22% in the immobility time and an increment of 106% in the swimming time. The compound alters neither the locomotor activity nor the body weight after chronic administration. At the same dose, it showed antinociceptive activity, increasing the response latency. It blocks iodination reactions generating a charge transfer complex with iodine hence indicating anti-thyroid activity (Kc = 45366.5 ± 29 M-1). Albumin 3D fluorescence spectroscopy experiments showed intensity increase of peak A and decrease of peak B. CONCLUSIONS The results showed that the new compound produced a lowering of the immobility time and an increment of the swimming ability of the rats. The compound is able to increase the response latency in 70.0%, to capture iodine (anti-thyroid activity) and to interact with albumin through covalent type of interaction of the free NH groups.
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Affiliation(s)
- Nancy Martini
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP)-Departamento de Química - Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina; Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP (CONICET, CCT-La Plata), La Plata, Argentina
| | - Juliana E Parente
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP)-Departamento de Química - Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina; Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP (CONICET, CCT-La Plata), La Plata, Argentina
| | - Maria Eugenia Toledo
- Instituto de Biotecnología del CENIIT-UNLaR (Centro de Investigación e Innovación Tecnológica), La Rioja, Argentina; Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP (CONICET, CCT-La Plata), La Plata, Argentina
| | - Graciela E Escudero
- Instituto de Bioquímica y Farmacia del CENIIT-UNLaR (Centro de Investigación e Innovación Tecnológica), La Rioja, Argentina; Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP (CONICET, CCT-La Plata), La Plata, Argentina
| | - Carlos H Laino
- Instituto de Biotecnología del CENIIT-UNLaR (Centro de Investigación e Innovación Tecnológica), La Rioja, Argentina; Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP (CONICET, CCT-La Plata), La Plata, Argentina
| | - Oscar E Piro
- Instituto de Bioquímica y Farmacia del CENIIT-UNLaR (Centro de Investigación e Innovación Tecnológica), La Rioja, Argentina; Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP (CONICET, CCT-La Plata), La Plata, Argentina
| | - Gustavo A Echeverría
- Instituto de Bioquímica y Farmacia del CENIIT-UNLaR (Centro de Investigación e Innovación Tecnológica), La Rioja, Argentina; Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP (CONICET, CCT-La Plata), La Plata, Argentina
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP)-Departamento de Química - Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina; Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP (CONICET, CCT-La Plata), La Plata, Argentina
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP)-Departamento de Química - Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina; Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP (CONICET, CCT-La Plata), La Plata, Argentina.
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Goitia H, Quispe P, Naso LG, Martínez VR, Rey M, Rizzi AC, Ferrer EG, Williams PAM. Interactions of rutin with the oxidovanadium(iv) cation. Anticancer improvement effects of glycosylated flavonoids. NEW J CHEM 2019. [DOI: 10.1039/c9nj01039d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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
This work reports the biological evaluation of the new complex Na2[VO(rut)(OH)2]·5H2O (rut = rutin, a glycosylated flavonoid).
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Affiliation(s)
- Helen Goitia
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP)
- La Plata
- Argentina
| | - Patricia Quispe
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP)
- La Plata
- Argentina
| | - Luciana G. Naso
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP)
- La Plata
- Argentina
| | - Valeria R. Martínez
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP)
- La Plata
- Argentina
| | - Marilin Rey
- Departamento de Física
- Facultad de Bioquímica y Ciencias Biológicas
- Universidad Nacional del Litoral
- 3000 Santa Fe
- Argentina
| | - Alberto C. Rizzi
- Departamento de Física
- Facultad de Bioquímica y Ciencias Biológicas
- Universidad Nacional del Litoral
- 3000 Santa Fe
- Argentina
| | - Evelina G. Ferrer
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP)
- La Plata
- Argentina
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15
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Parente JE, Naso LG, Jori K, Franca CA, da Costa Ferreira AM, Williams PAM, Ferrer EG. In vitroexperiments and infrared spectroscopy analysis of acid and alkaline phosphatase inhibition by vanadium complexes. NEW J CHEM 2019. [DOI: 10.1039/c9nj01638d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Two oxidovanadium complexes with 4-aminobenzoic acid and/or the peroxo anion as ligands were synthesized and characterized by elemental analysis, conductivity measurements, TGA/DTA,1H NMR, EPR, FTIR, and UV/vis spectroscopies.
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Affiliation(s)
- Juliana E. Parente
- Center of Inorganic Chemistry (CEQUINOR, CONICET-CICPBA-UNLP)
- Department of Chemistry
- Faculty of Exact Sciences
- National University of La Plata
- 1900 La Plata
| | - Luciana G. Naso
- Center of Inorganic Chemistry (CEQUINOR, CONICET-CICPBA-UNLP)
- Department of Chemistry
- Faculty of Exact Sciences
- National University of La Plata
- 1900 La Plata
| | - Khalil Jori
- Center of Inorganic Chemistry (CEQUINOR, CONICET-CICPBA-UNLP)
- Department of Chemistry
- Faculty of Exact Sciences
- National University of La Plata
- 1900 La Plata
| | - Carlos A. Franca
- Center of Inorganic Chemistry (CEQUINOR, CONICET-CICPBA-UNLP)
- Department of Chemistry
- Faculty of Exact Sciences
- National University of La Plata
- 1900 La Plata
| | | | - Patricia A. M. Williams
- Center of Inorganic Chemistry (CEQUINOR, CONICET-CICPBA-UNLP)
- Department of Chemistry
- Faculty of Exact Sciences
- National University of La Plata
- 1900 La Plata
| | - Evelina G. Ferrer
- Center of Inorganic Chemistry (CEQUINOR, CONICET-CICPBA-UNLP)
- Department of Chemistry
- Faculty of Exact Sciences
- National University of La Plata
- 1900 La Plata
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Martínez Medina JJ, Naso LG, Pérez AL, Rizzi A, Okulik NB, Valcarcel M, Salado C, Ferrer EG, Williams PAM. Synthesis, characterization, theoretical studies and biological (antioxidant, anticancer, toxicity and neuroprotective) determinations of a copper(II) complex with 5-hydroxytryptophan. Biomed Pharmacother 2018; 111:414-426. [PMID: 30594780 DOI: 10.1016/j.biopha.2018.12.098] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 09/20/2018] [Revised: 12/18/2018] [Accepted: 12/19/2018] [Indexed: 10/27/2022] Open
Abstract
5-Hydroxy-L-tryptophan (5-HTP) is a serotonin pathway metabolite of L-tryptophan in the brain. In the knowledge that the biological properties of some compounds can be modified upon metal complexation, a new solid metal complex, [Cu(5-hydroxytryptophan)2].H2O (Cu5HTP), has been synthesized and characterized to analyze the modification of some biological properties. The conformational investigations (optimized in gas phase at B3LYP/6-311G** theory level) suggest the coexistence of two conformers of Cu5HTP with cis- and trans- arrangements of the amino acids in the equatorial plane. The trans- Cu5HTP1 complex is the most stable conformer. The complexation led to an enhancement of the antioxidant properties of the ligand. The metal complex also improved the anticancer behavior of the ligand (tested in cancer cell lines derived from human lung (A549), cervix (HeLa) and colon (HCT-116)). It did not show toxicity against either the non-malignant human lung fibroblast (MRC-5) cell line or Artemia salina and did not behave as mutagenic agent (Ames test). Cellular reactive oxygen species production may be one of the possible mechanisms of action. Besides, the metal complex exerted neuroprotective action on cortical neurons from embryonic 18 days rats exposed to glutamate.
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Affiliation(s)
- Juan J Martínez Medina
- Universidad Nacional del Chaco Austral, Comandante Fernández, 755 - CP: 3700, Presidencia Roque Sáenz Peña, Chaco, Argentina
| | - Luciana G Naso
- CEQUINOR, CONICET/CICPBA/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 Nº 1465, 1900 La Plata, Argentina
| | - Ana L Pérez
- Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria-Paraje El Pozo, 3000 Santa Fe, Argentina
| | - Alberto Rizzi
- Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria-Paraje El Pozo, 3000 Santa Fe, Argentina
| | - Nora B Okulik
- Universidad Nacional del Chaco Austral, Comandante Fernández, 755 - CP: 3700, Presidencia Roque Sáenz Peña, Chaco, Argentina
| | - María Valcarcel
- Innoprot SL, Edificio 502-P1- Parque Tecnológico, 48160, Derio, Spain
| | - Clarisa Salado
- Innoprot SL, Edificio 502-P1- Parque Tecnológico, 48160, Derio, Spain
| | - Evelina G Ferrer
- CEQUINOR, CONICET/CICPBA/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 Nº 1465, 1900 La Plata, Argentina
| | - Patricia A M Williams
- CEQUINOR, CONICET/CICPBA/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 Nº 1465, 1900 La Plata, Argentina.
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Martini N, Parente JE, D Alessandro F, Rey M, Rizzi A, Williams PAM, Ferrer EG. Potential bio-protective effect of copper compounds: mimicking SOD and peroxidases enzymes and inhibiting acid phosphatase as a target for anti-osteoporotic chemotherapeutics. Mol Biol Rep 2018; 46:867-885. [PMID: 30506507 DOI: 10.1007/s11033-018-4542-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 10/25/2018] [Accepted: 11/28/2018] [Indexed: 11/28/2022]
Abstract
Copper complexes with transformed methimazole ligand have been synthesized and characterized by elemental analysis, conductivity measurements, thermogravimetric analysis, EPR, FTIR and UV-Vis spectroscopies. Results support their stoichiometries and geometrical structures: [Cu(C4H5N2S)2Cl2]·2H2O(1), [Cu(C8H10N4S)SO4H2O](2) and [Cu(C8H10N4S)SO4](3). ((C4H5N2)2S: bis(l-methylimidazol-2-yl)sulfide; (C4H5N2S)2 = Bis[bis(l-methylimidazol-2-yl)disulfide]) Concurrently, the structurally distinct soluble species corresponding to complexes (1) and (2) were subsequently used in an in vitro investigation of their potential biological properties. In view of their possible pharmaceutical activity, the complexes were in vitro evaluated as phosphatase acid inhibitors. Their radical bio-protective effects were also studied measuring the effect against DPPH• and O2•- radicals. Additional catalytic properties as peroxidase mimics were evaluated using Michaelis-Menten kinetic model by means of phenol red and pyrogallol assays. The complexes exhibited catalytic bromination activity and the ability to oxidize pyrogallol substrate indicating that they can be considered as functional models. The relationships between the structures and the in vitro biological activities have also been considered. Serum protein albumin has attracted the greatest interest as drug carrier and the affinity of biological/pharmaceutical compound is relevant to the development of new medicine. In that sense, interaction studies by fluorescence and EPR spectroscopies were performed showing the binding capacity of the complexes.
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Affiliation(s)
- Nancy Martini
- CEQUINOR, CONICET-CICPBA-UNLP, Faculty of Exact Sciences, National University of La Plata, Bv. 120 No 1465, 1900, La Plata, Argentina
| | - Juliana E Parente
- CEQUINOR, CONICET-CICPBA-UNLP, Faculty of Exact Sciences, National University of La Plata, Bv. 120 No 1465, 1900, La Plata, Argentina
| | - Franco D Alessandro
- CEQUINOR, CONICET-CICPBA-UNLP, Faculty of Exact Sciences, National University of La Plata, Bv. 120 No 1465, 1900, La Plata, Argentina
| | - Marilin Rey
- Physics Department, Faculty of Biochemistry and Biological Sciences, National University of the Litoral, Ciudad Universitaria-Paraje El Pozo, 3000, Santa Fe, Argentina
| | - Alberto Rizzi
- Physics Department, Faculty of Biochemistry and Biological Sciences, National University of the Litoral, Ciudad Universitaria-Paraje El Pozo, 3000, Santa Fe, Argentina
| | - Patricia A M Williams
- CEQUINOR, CONICET-CICPBA-UNLP, Faculty of Exact Sciences, National University of La Plata, Bv. 120 No 1465, 1900, La Plata, Argentina
| | - Evelina G Ferrer
- CEQUINOR, CONICET-CICPBA-UNLP, Faculty of Exact Sciences, National University of La Plata, Bv. 120 No 1465, 1900, La Plata, Argentina.
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18
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Martínez VR, Aguirre MV, Todaro JS, Piro OE, Echeverría GA, Naso LG, Ferrer EG, Williams PAM. Interaction of Zn with Losartan. Activation of Intrinsic Apoptotic Signaling Pathway in Lung Cancer Cells and Effects on Alkaline and Acid Phosphatases. Biol Trace Elem Res 2018; 186:413-429. [PMID: 29651733 DOI: 10.1007/s12011-018-1334-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 02/14/2018] [Accepted: 04/03/2018] [Indexed: 02/03/2023]
Abstract
A new losartan [2-butyl-5-chloro-3-[[4-[2-(2H-tetrazol-5-yl)phenyl]phenyl]methyl]imidazol-4-yl]methanol zinc(II) complex [Zn(Los)Cl], was synthesized and characterized. The crystal structure was determined by x-ray diffraction methods. When aqueous solutions of the ligand and the metal were mixed, the known and more soluble powder [Zn(Los)2].3H2O (ZnLos) complex has been obtained. The interactions with phosphatases showed a concerted mechanism displayed by the Zn ions and ZnLos up to 500 μM concentration: a decrease of the acid phosphatase (AcP) associated with an increase in the alkaline phosphatase (ALP) activities. The complex and ZnSO4 showed a cytotoxic behavior on human lung A549 cancer cell line at concentrations higher than 75 μM with reactive oxygen species (ROS) generation and GSH (and GSH/GSSG ratio) depletion. Apoptotic cells were observed using terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) method, a mechanism accompanied by upregulation of BAX protein, downregulation of Bcl-XL and release of caspase-3. The BAX/Bcl-XL ratio was found to be significantly higher in cells exposure to ZnLos than cells treated with ZnSO4, in agreement with the higher apoptotic percentage of cells found for the complex. Cell death was found to be produced by apoptosis and no necrosis has been observed. On the contrary, losartan exerted low effects on phosphatases, produced some reduction of cancer cell viability (concentrations > 250 μM, number of apoptotic cells similar to the basal) with low ROS depletion, without alteration of the GSH/GSSG and low BAX/Bcl-XL ratios. In the MRC-5, normal lung fibroblasts cell line only ZnSO4 at concentrations higher than 200 μM displays cytotoxic effects. Graphical abstract Interaction of Zn with losartan. Activation of intrinsic apoptotic signaling pathway in lung cancer cells and effects on alkaline and acid phosphatases.
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Affiliation(s)
- Valeria R Martínez
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP), 120 N° 1465, La Plata, Argentina
| | - María V Aguirre
- Laboratorio de Investigaciones Bioquímicas, Facultad de Medicina, UNNE, Moreno, 1240, Corrientes, Argentina
| | - Juan S Todaro
- Laboratorio de Investigaciones Bioquímicas, Facultad de Medicina, UNNE, Moreno, 1240, Corrientes, Argentina
| | - Oscar E Piro
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata y IFLP (CONICET, CCT La Plata), C.C. 67, 1900, La Plata, Argentina
| | - Gustavo A Echeverría
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata y IFLP (CONICET, CCT La Plata), C.C. 67, 1900, La Plata, Argentina
| | - Luciana G Naso
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP), 120 N° 1465, La Plata, Argentina
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP), 120 N° 1465, La Plata, Argentina
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP), 120 N° 1465, La Plata, Argentina.
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Martínez VR, Aguirre MV, Todaro JS, Piro OE, Echeverría GA, Ferrer EG, Williams PAM. Azilsartan and its Zn(II) complex. Synthesis, anticancer mechanisms of action and binding to bovine serum albumin. Toxicol In Vitro 2018; 48:205-220. [PMID: 29408668 DOI: 10.1016/j.tiv.2018.01.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [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: 10/24/2017] [Revised: 12/15/2017] [Accepted: 01/14/2018] [Indexed: 02/08/2023]
Abstract
Azilsartan is the eighth approved member of angiotensin II receptor blockers for hypertension treatment. Considering that some drugs have additional effects when administered, we studied its effects and mechanisms of action on a human lung cancer cell line A549. We have also modified the structure of the drug by complexation with Zn(II) cation and assayed the anticancer effect. The crystal structure of the new binuclear Zn(II) complex, for short [Zn2(azil)2(H2O)4]·2H2O (ZnAzil), was determined by X-ray diffraction methods. The zinc ions are bridged by azilsartan ligands through their carboxylate oxygen and oxadiazol nitrogen atoms. The compounds were examined for their cytotoxic effects against human lung fibroblast (MRC5) and human lung cancer (A549) cell lines. Azilsartan displayed low cytotoxic effects at 150 μM concentrations in A549 human lung cancer cells but the higher effect measured for the Zn complex suggested that this compound may act as an anticancer agent. An apoptotic oxidative stress mechanism of action via the mitochondrial-dependent intrinsic pathway has been determined. Besides, the compounds exerted weak cytotoxic effects in the normal lung related cell line MRC5. Binding constants of the complex formed between each compound and bovine serum albumin (BSA) are in the intermediate range, hence suggesting that azilsartan and ZnAzil could be bonded and transported by BSA.
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Affiliation(s)
- Valeria R Martínez
- Centro de Química Inorgánica (CEQUINOR-CONICET-UNLP), 120 N° 1465, La Plata, Argentina
| | - María V Aguirre
- Laboratorio de Investigaciones Bioquímicas, Facultad de Medicina, UNNE, Moreno 1240, Corrientes, Argentina
| | - Juan S Todaro
- Laboratorio de Investigaciones Bioquímicas, Facultad de Medicina, UNNE, Moreno 1240, Corrientes, Argentina
| | - Oscar E Piro
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata y IFLP (CONICET, CCT La Plata), C.C. 67, 1900 La Plata, Argentina
| | - Gustavo A Echeverría
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata y IFLP (CONICET, CCT La Plata), C.C. 67, 1900 La Plata, Argentina
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR-CONICET-UNLP), 120 N° 1465, La Plata, Argentina
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR-CONICET-UNLP), 120 N° 1465, La Plata, Argentina.
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Islas MS, Martínez Medina JJ, Piro OE, Echeverría GA, Ferrer EG, Williams PAM. Comparisons of the spectroscopic and microbiological activities among coumarin-3-carboxylate, o-phenanthroline and zinc(II) complexes. Spectrochim Acta A Mol Biomol Spectrosc 2018; 198:212-221. [PMID: 29547823 DOI: 10.1016/j.saa.2018.03.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 12/27/2017] [Revised: 02/28/2018] [Accepted: 03/02/2018] [Indexed: 05/08/2023]
Abstract
Coumarins (2H-chromen-2-one) are oxygen-containing heterocyclic compounds that belong to the benzopyranones family. In this work we have synthesized different coordination complexes with coumarin-3-carboxylic acid (HCCA), o-phenanthroline (phen) and zinc(II). In the reported [Zn(CCA)2(H2O)2] complex, coumarin-3-carboxylate (CCA) is acting as a bidentate ligand while in the two prepared complexes, [Zn(phen)3]CCA(NO3) (obtained as a single crystal) and [Zn(CCA)2phen].4H2O, CCA is acting as a counterion of the complex cation [Zn(phen)3]+2 or coordinated to the metal center along with phen, respectively. These compounds were characterized on the basis of elemental analysis and thermogravimetry. NMR, FTIR and Raman spectroscopies of the compounds and the CCA potassium salt (KCCA) allow to determine several similarities and differences among them. Finally, their behavior against alkaline phosphatase enzyme and their antimicrobial activities were also measured.
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Affiliation(s)
- María S Islas
- Centro de Química Inorgánica (CEQUINOR), FCE, UNLP, Bv. 120 n° 1465, 1900 La Plata, Argentina
| | | | - Oscar E Piro
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP(CONICET, CCT La Plata), C.C. 67, 1900 La Plata, Argentina
| | - Gustavo A Echeverría
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP(CONICET, CCT La Plata), C.C. 67, 1900 La Plata, Argentina
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR), FCE, UNLP, Bv. 120 n° 1465, 1900 La Plata, Argentina
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR), FCE, UNLP, Bv. 120 n° 1465, 1900 La Plata, Argentina.
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Martini N, Parente JE, Toledo ME, Escudero GE, Laino CH, Martínez Medina JJ, Echeverría GA, Piro OE, Lezama L, Williams PAM, Ferrer EG. Evidence of promising biological-pharmacological activities of the sertraline-based copper complex: (SerH 2) 2[CuCl 4]. J Inorg Biochem 2017. [PMID: 28622579 DOI: 10.1016/j.jinorgbio.2017.05.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
In the current study the ability of copper complex to exert multiple biological activities is combined with the pharmacological action of sertraline (SerH2Cl, antidepressant drug). The hydrated and anhydrous forms of the tetrachlorocuprate(II) salts, namely (SerH2)2[CuCl4]·½H2O and (SerH2)2[CuCl4], were synthesized and characterized by physicochemical methods. The crystal structures were determined by X-ray diffraction methods. The hydrate complex crystallizes in the monoclinic P21 space group with a=8.0807(2) Å, b=36.2781(8) Å, c=12.6576(3) Å, β=95.665(2)°, and Z=4 molecules per unit cell and the un-hydrate in P21 with a=13.8727(6) Å, b=7.5090(3) Å, c=18.618(1) Å, β=104.563(6)°, and Z=2. It has been suggested that Cu(II) ions might be critical in the development of mood disorders, showed potent biocidal activity, and also acted as analgesic adjuvant. To improve sertraline efficiency, the antidepressant and analgesic activities of the complex have been assessed in rats denoting a marked synergistic effect. Antithyroid and antimicrobial activities were also evaluated. Because depressive disorders and hyperthyroidism diseases led to an oxidative stress state, antioxidant capability has also been tested. The complex behaved as a good superoxide radical scavenger (IC50=6.3×10-6M). The ability of the complex to act as bromoperoxidase mimic was assessed. A pseudo-first order constant of k=0.157±0.007min-1 has been determined. The complex evidences promising biological-pharmacological activities and the albumin binding studies showed a Kb of 2.90×103M-1 showing an improvement in the uptake of sertraline by albumin at 8h incubation (time required for effective interaction of sertraline with the protein).
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Affiliation(s)
- Nancy Martini
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química-Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Boulevard 120 entre 60 y 64, C.C.962-(B1900AVV)-1900 La Plata, Argentina
| | - Juliana E Parente
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química-Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Boulevard 120 entre 60 y 64, C.C.962-(B1900AVV)-1900 La Plata, Argentina
| | - Maria Eugenia Toledo
- Instituto de Biotecnología del CENIIT-UNLaR (Centro de Investigación e Innovación Tecnológica), Av Luis Vernet y Apostol Felipe, 5300, La Rioja, Argentina
| | - Graciela E Escudero
- Instituto de Farmacia y Bioquímica del CENIIT-UNLaR (Centro de Investigación e Innovación Tecnológica), Av Luis Vernet y Apostol Felipe, 5300 La Rioja, Argentina
| | - Carlos H Laino
- Instituto de Biotecnología del CENIIT-UNLaR (Centro de Investigación e Innovación Tecnológica), Av Luis Vernet y Apostol Felipe, 5300, La Rioja, Argentina
| | - Juan José Martínez Medina
- Universidad Nacional del Chaco Austral, Comandante Fernández 755, CP: 3700 Presidencia Roque Sáenz Peña, Chaco, Argentina
| | - Gustavo A Echeverría
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP (CONICET, CCT-La Plata), C.C. 67, 1900 La Plata, Argentina
| | - Oscar E Piro
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP (CONICET, CCT-La Plata), C.C. 67, 1900 La Plata, Argentina
| | - Luis Lezama
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, PO Box 644, 48080 Bilbao, Spain; BCMaterials, Parque científico y Tecnológico de Bizkaia, Edificio 500-1, 48160 Derio, Spain
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química-Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Boulevard 120 entre 60 y 64, C.C.962-(B1900AVV)-1900 La Plata, Argentina
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química-Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Boulevard 120 entre 60 y 64, C.C.962-(B1900AVV)-1900 La Plata, Argentina.
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Martínez Medina JJ, Naso LG, Pérez AL, Rizzi A, Ferrer EG, Williams PAM. Antioxidant and anticancer effects and bioavailability studies of the flavonoid baicalin and its oxidovanadium(IV) complex. J Inorg Biochem 2016; 166:150-161. [PMID: 27863301 DOI: 10.1016/j.jinorgbio.2016.11.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [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: 08/03/2016] [Revised: 10/11/2016] [Accepted: 11/03/2016] [Indexed: 10/20/2022]
Abstract
Based on the known antioxidant effect of flavonoids, baicalin (baic) found in roots of Scutellaria has been selected. Its coordination complex with the oxidovanadium(IV) cation, Na4[VO(baic)2].6H2O (VIVO(baic)), was synthesized at pH9 in ethanol and characterized by physicochemical methods. Spectrophotometric studies at pH9 showed a ligand: metal stoichiometry of 2:1. By vibrational spectroscopy a coordination mode through the cis 5-OH and 6-OH deprotonated groups is inferred. EPR spectroscopy shows an environment of four aryloxide (ArO-) groups in the equatorial plane of the VO moiety, both in solution and in the solid complex. The antioxidant capacity against superoxide and peroxyl radicals of VIVO(baic) resulted greater than for baicalin and correlated with previous results obtained for other VOflavonoid complexes. The coordination mode produces delocalization of the electron density and the stabilization of the radical formed by interaction with external radicals. The complex and the ligand displayed no toxic (Artemia salina test) and no mutagenic (Ames test) effects. The complex improved the ability of the ligand to reduce cell viability of human lung cancer cell lines (A549) generating reactive oxygen species (ROS) in cells, being this effect reversed by pre-incubation of the cells with antioxidants such as vitamins C and E. The addition of NAC (N-acetyl-l-cysteine, a sequestering agent of free radicals) suppresses the anticancer effect, confirming the oxidative stress mechanism. The complex interacted with bovine serum albumin (BSA) with stronger binding than baicalin and the mechanisms involved H bonding and van der Waals interactions.
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Affiliation(s)
- Juan J Martínez Medina
- Universidad Nacional del Chaco Austral - Comandante Fernández 755, CP: 3700 Presidencia Roque Sáenz Peña, Chaco, Argentina
| | - Luciana G Naso
- CEQUINOR, CONICET/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465, 1900 La Plata, Argentina
| | - Ana L Pérez
- Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas-Universidad Nacional del Litoral, Ciudad Universitaria-Paraje El Pozo, 3000 Santa Fe, Argentina
| | - Alberto Rizzi
- Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas-Universidad Nacional del Litoral, Ciudad Universitaria-Paraje El Pozo, 3000 Santa Fe, Argentina
| | - Evelina G Ferrer
- CEQUINOR, CONICET/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465, 1900 La Plata, Argentina
| | - Patricia A M Williams
- CEQUINOR, CONICET/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465, 1900 La Plata, Argentina.
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Naso LG, Badiola I, Marquez Clavijo J, Valcarcel M, Salado C, Ferrer EG, Williams PAM. Inhibition of the metastatic progression of breast and colorectal cancer in vitro and in vivo in murine model by the oxidovanadium(IV) complex with luteolin. Bioorg Med Chem 2016; 24:6004-6011. [PMID: 27707626 DOI: 10.1016/j.bmc.2016.09.058] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [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: 08/18/2016] [Revised: 09/20/2016] [Accepted: 09/23/2016] [Indexed: 01/09/2023]
Abstract
The anticancer and antimetastatic behavior of the flavonoid luteolin and its oxidovanadium(IV) complex [VO(lut)(H2O)2]Na·3H2O (VOlut) has been investigated. Considering that the complex displayed strong anticancer activity on MDAMB231 human breast cancer cell line we herein determined through in vitro assays that the complex would probably reduce breast cancer cell metastasis in a higher extent than the natural antioxidant. In the CT26 colon cancer cell line a stronger anticancer effect has also been determined for the complex (IC50 0.9μM) and in addition it did not exert toxic effects on normal colon epithelial cells at concentrations up to 10μM. Working with a murine model of highly aggressive, orthotopic colon cancer model (CT26 cancer cell lines) it has been determined that the complex might prevent metastatic dissemination of the colon cancer cells to the liver. The flavonoid luteolin also exerted anticancer effects (at a low degree, IC50 5.9μM) on CT26 cell line and produced a 24% reduction of colon cancer liver metastasis.
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Affiliation(s)
- Luciana G Naso
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 120 N° 1465, 1900 La Plata, Argentina
| | - Iker Badiola
- Department of Cell Biology and Histology, Faculty of Medicine, University of the Basque Country UPV/EHU, Leioa, 48940 Vizcaya, Spain
| | - Joana Marquez Clavijo
- Department of Cell Biology and Histology, Faculty of Medicine, University of the Basque Country UPV/EHU, Leioa, 48940 Vizcaya, Spain
| | - María Valcarcel
- Innoprot SL, Parque científico y Tecnológico de Bizkaia Edificio 502-P1, 48160 Derio, Spain
| | - Clarisa Salado
- Innoprot SL, Parque científico y Tecnológico de Bizkaia Edificio 502-P1, 48160 Derio, Spain
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 120 N° 1465, 1900 La Plata, Argentina
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 120 N° 1465, 1900 La Plata, Argentina.
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24
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Naso L, Martínez VR, Lezama L, Salado C, Valcarcel M, Ferrer EG, Williams PAM. Antioxidant, anticancer activities and mechanistic studies of the flavone glycoside diosmin and its oxidovanadium(IV) complex. Interactions with bovine serum albumin. Bioorg Med Chem 2016; 24:4108-4119. [PMID: 27374881 DOI: 10.1016/j.bmc.2016.06.053] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 06/22/2016] [Accepted: 06/26/2016] [Indexed: 11/29/2022]
Abstract
The natural antioxidant flavonoid diosmin, found in citric fruits, showed low antioxidant properties among other flavonoids due to its structural characteristics and low cytotoxicity against lung (A549) and breast (T47D, SKBR3 and MDAMB231) cancer cell lines. The anticancer behavior has been improved by the metal complex generated with the flavonoid and the oxidovanadium(IV) ion. This new complex, [VO(dios)(OH)3]Na5·6H2O (VOdios), has been synthesized and characterized both in solid and solution states. The interaction of the metal ion through the sugar moiety of diosmin precluded the improvement of the antioxidant effects. However, the cell-killing effects tested in human lung A549 and breast T47D, SKBR3 and MDAMB231 cancer cell lines, were enhanced by complexation. The anti-proliferative effects on the human lung cancer cell line were accompanied by cellular ROS generation and an increase in cytoplasm condensation. The breast cancer cell lines did not produce caspase3/7 activation, mitochondrial potential reduction and ROS generation. Therefore, a non-apoptotic form of cell death in a caspase- and oxidative stress-independent manner has been proposed. The protein binding ability has been monitored by the quenching of tryptophan emission in the presence of the compounds using bovine serum albumin (BSA) as a model protein. Both compounds could be distributed and transported in vivo and the complex displayed stronger binding affinity and higher contributions to the hydrogen bond and van der Waals forces.
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Affiliation(s)
- Luciana Naso
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465 (62 y 63), 1900 La Plata, Argentina
| | - Valeria R Martínez
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465 (62 y 63), 1900 La Plata, Argentina
| | - Luis Lezama
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, PO Box 644, 48080 Bilbao, Spain; BCMaterials, Parque científico y Tecnológico de Bizkaia, Edificio 500-1, 48160 Derio, Spain
| | - Clarisa Salado
- Innoprot SL, Parque científico y Tecnológico de Bizkaia, Edificio 502-P1, 48160 Derio, Spain
| | - María Valcarcel
- Innoprot SL, Parque científico y Tecnológico de Bizkaia, Edificio 502-P1, 48160 Derio, Spain
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465 (62 y 63), 1900 La Plata, Argentina
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Bv. 120 N° 1465 (62 y 63), 1900 La Plata, Argentina.
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Urquiza NM, Naso LG, Martínez Medina JJ, Moyano MA, Lezama L, Williams PAM, Ferrer EG. Pharmacological activities of a propylthiouracil compound structurally modified by coordination with copper(II). J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1167885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Nora M. Urquiza
- Facultad de Bioquímica, Química y Farmacia, Cátedra de Química Analítica, Instituto de Química Analítica, Universidad Nacional de Tucumán, San Miguel de Tucumán, Argentina
| | - Luciana G. Naso
- Facultad de Ciencias Exactas, Centro de Química Inorgánica (CEQUINOR/CONICET, UNLP), UNLP, La Plata, Argentina
| | - Juan J. Martínez Medina
- Facultad de Ciencias Exactas, Centro de Química Inorgánica (CEQUINOR/CONICET, UNLP), UNLP, La Plata, Argentina
- Departamento de Química, UNCAUS, Chaco, Argentina
| | - María A. Moyano
- Facultad de Bioquímica, Química y Farmacia, Cátedra de Química Analítica, Instituto de Química Analítica, Universidad Nacional de Tucumán, San Miguel de Tucumán, Argentina
| | - Luis Lezama
- Facultad de Ciencia y Tecnología, Departamento de Química Inorgánica, Universidad del País Vasco UPV/EHU, Bilbao, Spain
- BCMaterials, Parque Científico y Tecnológico de Bizkaia, Derio, Spain
| | - Patricia A. M. Williams
- Facultad de Ciencias Exactas, Centro de Química Inorgánica (CEQUINOR/CONICET, UNLP), UNLP, La Plata, Argentina
| | - Evelina G. Ferrer
- Facultad de Ciencias Exactas, Centro de Química Inorgánica (CEQUINOR/CONICET, UNLP), UNLP, La Plata, Argentina
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Escudero GE, Laino CH, Echeverría GA, Piro OE, Martini N, Rodríguez AN, Martínez Medina JJ, López Tévez LL, Ferrer EG, Williams PAM. Improving the antidepressant action and the bioavailability of sertraline by co-crystallization with coumarin 3-carboxylate. Structural determination. Chem Biol Interact 2016; 249:46-55. [PMID: 26952715 DOI: 10.1016/j.cbi.2016.03.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 11/18/2015] [Revised: 02/17/2016] [Accepted: 03/04/2016] [Indexed: 11/27/2022]
Abstract
To improve the antidepressant action of sertraline a new salt with coumarin-3-carboxylate anion (SerH-CCA) has been synthesized by two different methods and characterized by FTIR spectroscopy and structural determinations by X-ray diffraction methods. The new salt is stabilized by strong intermolecular H-bonds involving the protonated amine group of SerH and the deprotonated carboxylate group of CCA. These findings can be correlated with the interpretation of the infrared spectrum. The salt, sertraline (SerHCl) and the sodium salt of coumarin-3-carboxylate (NaCCA) were orally administered male Wistar rats (10 mg/kg, based on sertraline). Rats were evaluated in separate groups by means of the forced swimming (FST). SerH-CCA produced antidepressant effects in a magnitude that exceeded SerHCl individual effects. None of these treatments affected activity levels by the open field OFT tests. We have also determined that the ion pair also improve the binding to bovine serum albumin (BSA) of the drug but retain its antimicrobial activity. It is reasonable to conclude that the replacement of chloride anion by a large organic anion in sertraline strengthens the pharmacological action of the native drug, binding to BSA with higher activity and retaining the antimicrobial activity of the antidepressant compound.
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Affiliation(s)
- Graciela E Escudero
- Instituto de Bioquímica y Farmacia (IByF), Centro de Investigación e Innovación Tecnológica (CENIIT), Universidad Nacional de La Rioja, Av. Luis Vernet y Apóstol Felipe, 5300, La Rioja, Argentina
| | - Carlos H Laino
- Instituto de Biotecnología, Centro de Investigación e Innovación Tecnológica (CENIIT), Universidad Nacional de La Rioja, Av. Luis Vernet y Apóstol Felipe, 5300, La Rioja, Argentina
| | - Gustavo A Echeverría
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP(CONICET, CCT La Plata), C.C. 67, 1900, La Plata, Argentina
| | - Oscar E Piro
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and IFLP(CONICET, CCT La Plata), C.C. 67, 1900, La Plata, Argentina
| | - Nancy Martini
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP)-Departamento de Química- Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115- C.C.962- (B1900AVV), 1900, La Plata, Argentina
| | - Ailén N Rodríguez
- Universidad Nacional del Chaco Austral, Com. Fernández 755, CP 3700, Presidencia Roque Sáenz Peña, Chaco, Argentina
| | - Juan J Martínez Medina
- Universidad Nacional del Chaco Austral, Com. Fernández 755, CP 3700, Presidencia Roque Sáenz Peña, Chaco, Argentina
| | - Libertad L López Tévez
- Universidad Nacional del Chaco Austral, Com. Fernández 755, CP 3700, Presidencia Roque Sáenz Peña, Chaco, Argentina
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP)-Departamento de Química- Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115- C.C.962- (B1900AVV), 1900, La Plata, Argentina
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP)-Departamento de Química- Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115- C.C.962- (B1900AVV), 1900, La Plata, Argentina.
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Escudero GE, Martini N, Jori K, Jori N, Maresca NR, Laino CH, Naso LG, Williams PAM, Ferrer EG. Biological activities of Zn(II)-S-methyl-cysteine complex as antiradical, inhibitor of acid phosphatase enzyme and in vivo antidepressant effects. J Enzyme Inhib Med Chem 2016; 31:1625-31. [PMID: 27028562 DOI: 10.3109/14756366.2016.1160900] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The antidepressant effect of simple Zn(II) salts has been proved in several animal models of depression. In this study, a coordination metal complex of Zn(II) having a sulfur containing ligand is tested as antidepressant for the first time. Forced swimming test method on male Wistar rats shows a decrease in the immobility and an increase in the swimming behavior after treatment with [Zn(S-Met)2] (S-Met=S-methyl-l-cysteine) being more effective and remarkable than ZnCl2. The thiobarbituric acid and the pyranine consumption (hydroxyl and peroxyl radicals, respectively) methods were applied to evaluate the antioxidant activity of S-Met and [Zn(S-Met)2] showing evidence of attenuation of hydroxyl but not peroxyl radicals activities. UV-vis studies on the inhibition of acid phosphatase enzyme (AcP) demonstrated that S-methyl-l-cysteine did not produce any effect but, in contrast, [Zn(S-Met)2] complex behaved as a moderate inhibitor. Finally, bioavailability studies were performed by fluorescence spectroscopy denoting the ability of the albumin to transport the complex.
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Affiliation(s)
- Graciela E Escudero
- a Instituto de Bioquímica y Farmacia del IByF-CENIIT-UNLaR (Centro de Investigación e Innovación Tecnológica), Av Luis Vernet y Apostol Felipe , La Rioja , Argentina
| | - Nancy Martini
- b Centro de Química Inorgánica (CEQUINOR/CONICET, UNLP), FCE-UNLP , La Plata , Argentina , and
| | - Khalil Jori
- b Centro de Química Inorgánica (CEQUINOR/CONICET, UNLP), FCE-UNLP , La Plata , Argentina , and
| | - Nadir Jori
- b Centro de Química Inorgánica (CEQUINOR/CONICET, UNLP), FCE-UNLP , La Plata , Argentina , and
| | - Nahuel R Maresca
- a Instituto de Bioquímica y Farmacia del IByF-CENIIT-UNLaR (Centro de Investigación e Innovación Tecnológica), Av Luis Vernet y Apostol Felipe , La Rioja , Argentina
| | - Carlos H Laino
- c Instituto de Biotecnología del CENIIT-UNLaR (Centro de Investigación e Innovación Tecnológica), Av Luis Vernet y Apostol Felipe , La Rioja , Argentina
| | - Luciana G Naso
- b Centro de Química Inorgánica (CEQUINOR/CONICET, UNLP), FCE-UNLP , La Plata , Argentina , and
| | - Patricia A M Williams
- b Centro de Química Inorgánica (CEQUINOR/CONICET, UNLP), FCE-UNLP , La Plata , Argentina , and
| | - Evelina G Ferrer
- b Centro de Química Inorgánica (CEQUINOR/CONICET, UNLP), FCE-UNLP , La Plata , Argentina , and
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Naso LG, Lezama L, Valcarcel M, Salado C, Villacé P, Kortazar D, Ferrer EG, Williams PAM. Bovine serum albumin binding, antioxidant and anticancer properties of an oxidovanadium(IV) complex with luteolin. J Inorg Biochem 2016; 157:80-93. [PMID: 26828287 DOI: 10.1016/j.jinorgbio.2016.01.021] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [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: 10/14/2015] [Revised: 01/16/2016] [Accepted: 01/18/2016] [Indexed: 10/22/2022]
Abstract
Chemotherapy using metal coordination compounds for cancer treatment is the work of the ongoing research. Continuing our research on the improvement of the anticancer activity of natural flavonoids by metal complexation, a coordination compound of the natural antioxidant flavone luteolin (lut) and the oxidovanadium(IV) cation has been synthesized and characterized. Using different physicochemical measurements some structural aspects of [VO(lut)(H2O)2]Na·3H2O (VOlut) were determined. The metal coordinated to two cis-deprotonated oxygen atoms (ArO(-)) of the ligand and two H2O molecules. Magnetic measurements in solid state indicated the presence of an effective exchange pathway between adjacent vanadium ions. VOlut improved the antioxidant capacity of luteolin only against hydroxyl radical. The antitumoral effects were evaluated on MDAMB231 breast cancer and A549 lung cancer cell lines. VOlut exhibited higher viability inhibition (IC50=17 μM) than the ligand on MDAMB231 cells but they have the same behavior on A549 cells (ca. IC50=60 μM). At least oxidative stress processes were active during cancer cell-killing. When metals chelated through the carbonyl group and one adjacent OH group of the flavonoid an effective improvement of the biological properties has been observed. In VOlut the different coordination may be the cause of the small improvement of some of the tested properties of the flavonoid. Luteolin and VOlut could be distributed and transported in vivo. Luteolin interacted in the microenvironment of the tryptophan group of the serum binding protein, BSA, by means of electrostatic forces and its complex bind the protein by H bonding and van der Waals interactions.
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Affiliation(s)
- Luciana G Naso
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115-C.C.962-(B1900AVV), 1900 La Plata, Argentina
| | - Luis Lezama
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain; BCMaterials, Parque científico y Tecnológico de Bizkaia, Edificio 500-1, 48160 Derio, Spain
| | - María Valcarcel
- Innoprot SL, Parque científico y Tecnológico de Bizkaia, Edificio 502-P1, 48160 Derio, Spain
| | - Clarisa Salado
- Innoprot SL, Parque científico y Tecnológico de Bizkaia, Edificio 502-P1, 48160 Derio, Spain
| | - Patricia Villacé
- Innoprot SL, Parque científico y Tecnológico de Bizkaia, Edificio 502-P1, 48160 Derio, Spain
| | - Danel Kortazar
- Innoprot SL, Parque científico y Tecnológico de Bizkaia, Edificio 502-P1, 48160 Derio, Spain
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115-C.C.962-(B1900AVV), 1900 La Plata, Argentina
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115-C.C.962-(B1900AVV), 1900 La Plata, Argentina.
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29
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Islas MS, Naso LG, Lezama L, Valcarcel M, Salado C, Roura-Ferrer M, Ferrer EG, Williams PAM. Insights into the mechanisms underlying the antitumor activity of an oxidovanadium(IV) compound with the antioxidant naringenin. Albumin binding studies. J Inorg Biochem 2015; 149:12-24. [PMID: 25957189 DOI: 10.1016/j.jinorgbio.2015.04.011] [Citation(s) in RCA: 24] [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: 02/23/2015] [Revised: 04/17/2015] [Accepted: 04/19/2015] [Indexed: 12/16/2022]
Abstract
Naringenin, a natural antioxidant present in grapefruit, oranges and the skin of tomatoes showed low antioxidant properties among other flavonoids due to its structural characteristics. Since many flavonoids were shown to have cell-killing and antioxidant activities, naringenin was investigated herein. In parallel with its antioxidant activities the flavonoid showed very low cytotoxicity at concentrations up to 100 μM against lung (A549) and breast (SKBr3 and MDAMB231) cancer cell lines. Furthermore, a newly-synthesized and characterized complex of naringenin and oxidovanadium(IV) ([V(IV)O(nar)2] · 2H2O, VOnar, with weak ferromagnetic coupling) was also studied. As a result, VOnar acted as a better compound on cell-killing and antioxidant activities (in vitro) than naringenin. The anti-proliferative effect of VOnar was accompanied by reactive oxygen species (ROS) generation, cell membrane and DNA damages, cell cycle arrest, caspase 3/7 activation and mitochondrial potential reduction. The higher parameters observed for the MDAMB231 cell line have been related to its low glutathione (GSH) content. The assays of the interaction of bovine serum albumin (BSA) with the complex showed the affinity of protein toward it and that there is only one binding site on the BSA molecule. However, metal complexation decreased the binding affinity to BSA of naringenin probably due to a steric hindrance of the complex.
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Affiliation(s)
- María S Islas
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115-C.C.962-B1900AVV, 1900 La Plata, Argentina
| | - Luciana G Naso
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115-C.C.962-B1900AVV, 1900 La Plata, Argentina
| | - Luis Lezama
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain; BCMaterials, Parque científico y Tecnológico de Bizkaia, Edificio 500-1, 48160 Derio, Spain
| | - María Valcarcel
- Innoprot SL, Parque científico y Tecnológico de Bizkaia, Edificio 502-P1, 48160 Derio, Spain
| | - Clarisa Salado
- Innoprot SL, Parque científico y Tecnológico de Bizkaia, Edificio 502-P1, 48160 Derio, Spain
| | - Meritxell Roura-Ferrer
- Innoprot SL, Parque científico y Tecnológico de Bizkaia, Edificio 502-P1, 48160 Derio, Spain
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115-C.C.962-B1900AVV, 1900 La Plata, Argentina
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115-C.C.962-B1900AVV, 1900 La Plata, Argentina.
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30
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Leon IE, Porro V, Di Virgilio AL, Naso LG, Williams PAM, Bollati-Fogolín M, Etcheverry SB. Antiproliferative and apoptosis-inducing activity of an oxidovanadium(IV) complex with the flavonoid silibinin against osteosarcoma cells. J Biol Inorg Chem 2014; 19:59-74. [PMID: 24233155 DOI: 10.1007/s00775-013-1061-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Accepted: 10/29/2013] [Indexed: 01/02/2023]
Abstract
Flavonoids are a large family of polyphenolic compounds synthesized by plants. They display interesting biological effects mainly related to their antioxidant properties. On the other hand, vanadium compounds also exhibit different biological and pharmacological effects in cell culture and in animal models. Since coordination of ligands to metals can improve or change the pharmacological properties, we report herein, for the first time, a detailed study of the mechanisms of action of an oxidovanadium(IV) complex with the flavonoid silibinin, Na2[VO(silibinin)2]·6H2O (VOsil), in a model of the human osteosarcoma derived cell line MG-63. The complex inhibited the viability of osteosarcoma cells in a dose-dependent manner with a greater potency than that of silibinin and oxidovanadium(IV) (p < 0.01), demonstrating the benefit of complexation. Cytotoxicity and genotoxicity studies also showed a concentration effect for VOsil. The increase in the levels of reactive oxygen species and the decrease of the ratio of the amount of reduced glutathione to the amount of oxidized glutathione were involved in the deleterious effects of the complex. Besides, the complex caused cell cycle arrest and activated caspase 3, triggering apoptosis as determined by flow cytometry. As a whole, these results show the main mechanisms of the deleterious effects of VOsil in the osteosarcoma cell line, demonstrating that this complex is a promising compound for cancer treatments.
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Islas MS, Martínez Medina JJ, López Tévez LL, Rojo T, Lezama L, Griera Merino M, Calleros L, Cortes MA, Rodriguez Puyol M, Echeverría GA, Piro OE, Ferrer EG, Williams PAM. Correction to Antitumoral, Antihypertensive, Antimicrobial, and Antioxidant Effects of an Octanuclear Copper(II)-Telmisartan Complex with an Hydrophobic Nanometer Hole. Inorg Chem 2014. [DOI: 10.1021/ic501183f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
Two new vanadyl(IV) carboxylate complexes have been obtained: Na2[VO(Fer)2(CH3OH)2] and Na2[VO(Cin)2(CH3O)2] and characterized by elemental analysis and UV-vis, diffuse reflectance and IR and Raman spectroscopies (FerH2 = ferulic acid, CinH= cinnamic acid). The thermal behavior was also investigated. The inhibitory effect on alkaline phosphatase activity was tested for the compounds and ferulic and cinnamic acids as well as for the vanadyl(IV) complex of quinic acid for comparison. The ferulic complex together with the free ligands exhibited the lowest inhibitory effect, while the VO/quinic and VO/cinnamic complexes showed an intermediate inhibition potential
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Affiliation(s)
- Evelina G. Ferrer
- Centro de Química Inorgánica (CEQUINOR), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C.Correo 962, 1900 La Plata, Argentina
| | - María V. Salinas
- Centro de Química Inorgánica (CEQUINOR), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C.Correo 962, 1900 La Plata, Argentina
| | - María J. Correa
- Centro de Química Inorgánica (CEQUINOR), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C.Correo 962, 1900 La Plata, Argentina
| | - Fernanda Vrdoljak
- Centro de Química Inorgánica (CEQUINOR), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C.Correo 962, 1900 La Plata, Argentina
| | - Patricia A. M. Williams
- Centro de Química Inorgánica (CEQUINOR), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C.Correo 962, 1900 La Plata, Argentina
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Islas MS, Martínez Medina JJ, López Tévez LL, Rojo T, Lezama L, Griera Merino M, Calleros L, Cortes MA, Rodriguez Puyol M, Echeverría GA, Piro OE, Ferrer EG, Williams PAM. Antitumoral, Antihypertensive, Antimicrobial, and Antioxidant Effects of an Octanuclear Copper(II)-Telmisartan Complex with an Hydrophobic Nanometer Hole. Inorg Chem 2014; 53:5724-37. [DOI: 10.1021/ic500483p] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- María S. Islas
- Centro de Química Inorgánica
(CEQUINOR/CONICET/UNLP)- Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 esq. 115, 1900 La Plata, Argentina
| | - Juan J. Martínez Medina
- Departamento
de Química, UNCAUS, Cte. Fernández 755 (3700), Roque Saénz Peña, Chaco, Argentina
| | - Libertad L. López Tévez
- Departamento
de Química, UNCAUS, Cte. Fernández 755 (3700), Roque Saénz Peña, Chaco, Argentina
| | - Teófilo Rojo
- Departamento de Química
Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apdo. 644, 48080 Bilbao, Spain
| | - Luis Lezama
- Departamento de Química
Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apdo. 644, 48080 Bilbao, Spain
| | - Mercedes Griera Merino
- Departamento de
Fisiología, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares,
Madrid, Spain
| | - Laura Calleros
- Departamento de
Fisiología, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares,
Madrid, Spain
| | - María A. Cortes
- Departamento de
Fisiología, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares,
Madrid, Spain
| | - Manuel Rodriguez Puyol
- Departamento de
Fisiología, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares,
Madrid, Spain
| | - Gustavo A. Echeverría
- Departamento de Física,
Facultad de Ciencias Exactas, Universidad Nacional de La Plata- Institute IFLP (CONICET, CCT-La Plata), C. C. 67, 1900 La Plata, Argentina
| | - Oscar E. Piro
- Departamento de Física,
Facultad de Ciencias Exactas, Universidad Nacional de La Plata- Institute IFLP (CONICET, CCT-La Plata), C. C. 67, 1900 La Plata, Argentina
| | - Evelina G. Ferrer
- Centro de Química Inorgánica
(CEQUINOR/CONICET/UNLP)- Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 esq. 115, 1900 La Plata, Argentina
| | - Patricia A. M. Williams
- Centro de Química Inorgánica
(CEQUINOR/CONICET/UNLP)- Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 esq. 115, 1900 La Plata, Argentina
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Naso LG, Valcarcel M, Roura-Ferrer M, Kortazar D, Salado C, Lezama L, Rojo T, González-Baró AC, Williams PAM, Ferrer EG. Promising antioxidant and anticancer (human breast cancer) oxidovanadium(IV) complex of chlorogenic acid. Synthesis, characterization and spectroscopic examination on the transport mechanism with bovine serum albumin. J Inorg Biochem 2014; 135:86-99. [PMID: 24681549 DOI: 10.1016/j.jinorgbio.2014.02.013] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [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: 08/12/2013] [Revised: 02/10/2014] [Accepted: 02/11/2014] [Indexed: 01/21/2023]
Abstract
A new chlorogenate oxidovanadium complex (Na[VO(chlorog)(H2O)3].4H2O) was synthesized by using Schlenk methodology in the course of a reaction at inert atmosphere in which deprotonated chlorogenic acid ligand binds to oxidovanadium(IV) in a reaction experiment controlled via EPR technique and based in a species distribution diagram. The compound was characterized by FTIR, EPR, UV-visible and diffuse reflectance spectroscopies and thermogravimetric, differential thermal and elemental analyses. The ligand and the complex were tested for their antioxidant effects on DPPH (1,1-diphenyl-2-picrylhydrazyl radical), ABTS(+) (radical cation of 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt), O2(-), OH and ROO radicals and their cytotoxic activity on different cancer cell lines (SKBR3, T47D and MDAMB231) and primary human mammary epithelial cells. The complex behaved as good antioxidant agent with strongest inhibitory effects on O2(-), OH and ROO radicals and exhibited selective cytotoxicity against SKBR3 cancer cell line. Albumin interaction experiments denoted high affinity toward the complex and its calculated binding constant was indicative of a strong binding to the protein. Based on this study, it is hypothesized that Na[VO(chlorog)(H2O)3].4H2O would be a promising candidate for further evaluation as an antioxidant and anticancer agent.
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Affiliation(s)
- Luciana G Naso
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115, C.C. 962 (B1900AVV), 1900 La Plata, Argentina
| | - María Valcarcel
- INNOPROT, Parque Tecnológico de Bizkaia, Edf. 502-1°, Derio, Spain
| | | | - Danel Kortazar
- INNOPROT, Parque Tecnológico de Bizkaia, Edf. 502-1°, Derio, Spain
| | - Clarisa Salado
- INNOPROT, Parque Tecnológico de Bizkaia, Edf. 502-1°, Derio, Spain
| | - Luis Lezama
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del Pais Vasco, Apdo 644, 48080 Bilbao, Spain
| | - Teofilo Rojo
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del Pais Vasco, Apdo 644, 48080 Bilbao, Spain
| | - Ana C González-Baró
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115, C.C. 962 (B1900AVV), 1900 La Plata, Argentina
| | - Patricia A M Williams
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115, C.C. 962 (B1900AVV), 1900 La Plata, Argentina
| | - Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR, CONICET, UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115, C.C. 962 (B1900AVV), 1900 La Plata, Argentina.
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Naso L, Valcarcel M, Villacé P, Roura-Ferrer M, Salado C, Ferrer EG, Williams PAM. Specific antitumor activities of natural and oxovanadium(iv) complexed flavonoids in human breast cancer cells. NEW J CHEM 2014. [DOI: 10.1039/c3nj01649h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Leon IE, Di Virgilio AL, Porro V, Muglia CI, Naso LG, Williams PAM, Bollati-Fogolin M, Etcheverry SB. Antitumor properties of a vanadyl(IV) complex with the flavonoid chrysin [VO(chrysin)2EtOH]2 in a human osteosarcoma model: the role of oxidative stress and apoptosis. Dalton Trans 2013; 42:11868-80. [PMID: 23760674 DOI: 10.1039/c3dt50524c] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Flavonoids, a polyphenolic compound family, and the vanadium compounds have interesting biological, pharmacological, and medicinal properties. We report herein the antitumor actions of the complex [VO(chrysin)2EtOH]2 (VOchrys) on the MG-63 human osteosarcoma cell line. Oxovanadium(IV), chrysin and VOchrys caused a concentration-dependent inhibition of cell viability. The complex was the strongest antiproliferative agent (p < 0.05). Cytotoxicity and genotoxicity studies also showed a concentration effect. Reactive oxygen species (ROS) and the alterations in the GSH/GSSG ratio underlie the main mechanisms of action of VOchrys. Additions of ROS scavengers (vitamin C plus vitamin E) or GSH to the viability experiments demonstrated beneficial effects (p < 0.01). Besides, the complex triggered apoptosis, disruption of the mitochondria membrane potential (MMP), increased levels of caspase 3 and DNA fragmentation measured by the sub-G1 peak in cell cycle arrest experiments (p < 0.01). Collectively, VOchrys is a cell death modulator and a promissory complex to be used in cancer treatments.
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Affiliation(s)
- I E Leon
- Cátedra de Bioquímica Patológica, Facultad Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115 (1900), La Plata, Argentina
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Escudero GE, Ferraresi Curotto V, Laino CH, Pis Diez R, Williams PAM, Ferrer EG. Sertraline and its iodine product: experimental and theoretical vibrational studies: potential in vitro anti-thyroid activity of sertraline and iodine product toxicity with respect to male Wistar rats. Spectrochim Acta A Mol Biomol Spectrosc 2013; 104:271-279. [PMID: 23270885 DOI: 10.1016/j.saa.2012.11.076] [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] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Revised: 11/15/2012] [Accepted: 11/23/2012] [Indexed: 06/01/2023]
Abstract
Mayor depression, obsessive-compulsive panic, social anxiety disorders are common diseases that are usually treated with sertraline hydrochloride which is the active ingredient of the well known drugs as Zoloft and Lustral. In this work, we presented a more complete vibrational characterization of the solid phase FT-IR spectra of Sertraline hydrochloride and its sertraline-iodine product in which the conformational space of the molecules was investigated performing molecular dynamic simulations within an NVT ensemble. Geometrical, electronic and vibrational properties were calculated with the density functional theory. Comparison of the simulated spectra with the experimental spectra provides important information about the ability of the computational method to describe the vibrational modes of both molecules. In addition, for the first time we present the evaluation of anti-thyroid activity of sertraline hydrochloride by using the Lang's method. Also, with the aim to evaluate the antidepressant effect of its iodine product we demonstrated for this compound the toxic effect towards the male Wistar rats.
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Affiliation(s)
- Graciela E Escudero
- Instituto de Investigaciones en Ciencias de Salud Humana (IICSHUM-CICyT), Departamento de Ciencias Exactas, Físicas y Naturales Universidad Nacional de La Rioja, CP5300 La Rioja, Argentina
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Williams PAM, Zinczuk J, Baran EJ. On the interaction of vanadium species with the monoisoamyl ester of meso-2,3-dimercaptosuccinic acid. Biol Trace Elem Res 2010; 134:220-5. [PMID: 19652926 DOI: 10.1007/s12011-009-8463-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 06/23/2009] [Accepted: 07/09/2009] [Indexed: 11/24/2022]
Abstract
The interaction of the VO2+ cation with the monoisoamyl ester of meso-2,3-dimercaptosuccinic acid (MiADMSA) was investigated by electron absorption spectroscopy in aqueous solutions at different pH values. The spectral behavior, complemented with a spectrophotometric titration, shows the generation of a [VO(MiADMSA)2](4-) complex in which the oxocation interacts with two pairs of deprotonated -SH groups of the ester. Besides, MiADMSA rapidly reduces VO3(-) to VO2+, which might be chelated by an excess of the ester, and also produces relatively rapid reduction of V2O5 suspensions at pH = 6.5. The results of this study suggest that MiADMSA might be a potentially useful detoxification agent for vanadium.
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Affiliation(s)
- Patricia A M Williams
- 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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Ferrer EG, Baeza N, Naso LG, Castellano EE, Piro OE, Williams PAM. Superoxidedismutase-mimetic copper(II) complexes containing saccharinate and 4-aminopyridine/4-cyanopyridine. J Trace Elem Med Biol 2010; 24:20-6. [PMID: 20122575 DOI: 10.1016/j.jtemb.2009.09.002] [Citation(s) in RCA: 5] [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: 08/13/2008] [Revised: 09/23/2009] [Accepted: 09/28/2009] [Indexed: 11/17/2022]
Abstract
Two copper(II) complexes, [Cu(sac)(2)(4-cypy)(2)(H(2)O)], 1 and [Cu(sac)(2)(4-Ampy)(2)(H(2)O)], 2 (4-cypy: 4-cyanopyridine; 4-Ampy: 4-aminopyridine) were prepared. Physicochemical properties of the complexes were studied by spectroscopic (solution UV-vis, diffuse reflectance and IR) techniques. Structural X-ray diffraction data could be obtained only for [Cu(sac)(2)(4-cypy)(2)(H(2)O)] that it crystallized in the tetragonal space group P4cc with a=b=15.313(1), c=13.240(1)A, and Z=4 molecules per unit cell. The complex was cited on a crystallographic C(2)-axis with the Cu(II) ion in a square-pyramidal environment, coordinated at the pyramid basis to the nitrogen atom of two saccharine anions [d(Cu-N)=2.011(3)A] and the pyridine N-atom of two 4-cyanopyridine ligands [d(Cu-N)=2.038(4)A]. The coordination was completed by a water molecule at the pyramid apex [d(Cu-Ow)=2.189(5)A]. Elemental and spectroscopic analyses revealed an O-saccharinate coordination mode for complex 2 and a square-pyramidal structure. Only complex 2 retained its structure in methanolic solution. However, both complexes were able to catalyze the dismutation of superoxide anion (O(2)(-)) (pH 7.5) at micromolar concentrations. Therefore, these complexes behaved as useful SOD-mimetic compounds.
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Affiliation(s)
- Evelina G Ferrer
- 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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Urquiza NM, Manca SG, Moyano MA, Dellmans RA, Lezama L, Rojo T, Naso LG, Williams PAM, Ferrer EG. Copper(II) complexes of methimazole, an anti Grave’s disease drug. Synthesis, characterization and its potential biological behavior as alkaline phosphatase inhibitor. Biometals 2009; 23:255-64. [DOI: 10.1007/s10534-009-9283-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2009] [Accepted: 11/26/2009] [Indexed: 10/20/2022]
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Etcheverry SB, Ferrer EG, Naso L, Barrio DA, Lezama L, Rojo T, Williams PAM. Losartan and its interaction with copper(II): Biological effects. Bioorg Med Chem 2007; 15:6418-24. [PMID: 17651974 DOI: 10.1016/j.bmc.2007.06.056] [Citation(s) in RCA: 22] [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] [Subscribe] [Scholar Register] [Received: 05/15/2007] [Revised: 06/21/2007] [Accepted: 06/26/2007] [Indexed: 11/28/2022]
Abstract
Losartan, the potassium salt of 2-n-butyl-4-chloro-5-hydroxymethyl-1-[(2'-(1H-tetrazol-5-yl)biphenyl-4-yl)methyl]imidazol, is an efficient antihypertensive drug. The vibrational FTIR and Raman spectra of Losartan (its anionic and protonated forms) are discussed. In addition, the copper(II) complex of Losartan was obtained and characterized as a microcrystalline powder. The metal center is bound to the ligand through the nitrogen atoms of the tetrazolate moiety as determined by vibrational spectroscopy. The compound is a dimer with the metal centers in a tetragonal distorted environment but the presence of a monomeric impurity has been determined by EPR spectroscopy. The antioxidant properties of the complex (superoxide dismutase mimetic activity) and its effect on the proliferation and morphology of two osteoblast-like cells in culture are reported. The new compound exerted more toxic effects on tumoral cells than the copper(II) ion and Losartan.
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Affiliation(s)
- Susana B Etcheverry
- Centro de Química Inorgánica, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115 (1900) La Plata, Argentina
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Ferrer EG, López Tévez LL, Baeza N, Correa MJ, Okulik N, Lezama L, Rojo T, Castellano EE, Piro OE, Williams PAM. Molecular structure, bioavailability and bioactivity of [Cu(o-phen)2(cnge)](NO3)2.2H2O and [Cu(o-phen)(cnge)(H2O)(NO3)2] complexes. J Inorg Biochem 2007; 101:741-9. [PMID: 17331582 DOI: 10.1016/j.jinorgbio.2006.12.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 09/05/2006] [Revised: 12/20/2006] [Indexed: 10/23/2022]
Abstract
Two Cu(II) complexes with cyanoguanidine (cnge) and o-phenanthroline, [Cu(o-phen)(2)(cnge)](NO(3))(2).2H(2)O (1) and [Cu(o-phen)(cnge)(H(2)O)(NO(3))(2)] (2), have been synthesized using different experimental techniques and characterized by elemental analyses, FTIR, diffuse and UV-vis spectra and EPR and magnetic moment measurements techniques. The crystal structures of both complexes were solved by X-ray diffraction methods. Complex (1) crystallizes in the monoclinic space group C2/c with a=12.621(5), b=31.968(3), c=15.39(1)A, beta=111.68(4) degrees, and Z=8 and complex (2) in the monoclinic space group P2(1)/n with a=10.245(1), b=13.923(2), c=12.391(2)A, beta=98.07(1) degrees, and Z=4. The environments of the copper(II) center are trigonal bipyramidal (TBP) for [Cu(o-phen)(2)(cnge)](2+) and an elongated octahedron for [Cu(o-phen)(cnge)(H(2)O)(NO(3))(2)]. Solution studies have been performed to determine the species distribution. The superoxide dismutase (SOD) activities of both complexes have also been tested in order to determine if these compounds mimic the enzymatic action of the enzyme SOD that protects cells against peroxide radicals.
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Affiliation(s)
- Evelina G Ferrer
- Centro de Química Inorgánica (CEQUINOR), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C.C. 962, 1900 La Plata, Argentina
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Affiliation(s)
- Patricia A. M. Williams
- a Centro de Química Inorgánica (CEQUINOR), Facultad de Cs. Exactas, Universidad Nacional de La Plata , C. Correo 962, 1900-La, Plata, Argentina
| | - Evelina G. Ferrer
- a Centro de Química Inorgánica (CEQUINOR), Facultad de Cs. Exactas, Universidad Nacional de La Plata , C. Correo 962, 1900-La, Plata, Argentina
| | - Enrique J. Baran
- a Centro de Química Inorgánica (CEQUINOR), Facultad de Cs. Exactas, Universidad Nacional de La Plata , C. Correo 962, 1900-La, Plata, Argentina
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Ferrer EG, Salinas MV, Correa MJ, Naso L, Barrio DA, Etcheverry SB, Lezama L, Rojo T, Williams PAM. Synthesis, characterization, antitumoral and osteogenic activities of quercetin vanadyl(IV) complexes. J Biol Inorg Chem 2006; 11:791-801. [PMID: 16821038 DOI: 10.1007/s00775-006-0122-9] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.7] [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: 12/21/2005] [Accepted: 05/31/2006] [Indexed: 11/28/2022]
Abstract
The development of new vanadium derivatives with organic ligands, which improve the beneficial actions (insulin-mimetic, antitumoral) and decrease the toxic effects, is of great interest. A good candidate for the generation of a new vanadium compound is the flavonoid quercetin because of its own anticarcinogenic effect. The complex [VO(Quer)(2)EtOH]( n ) (QuerVO) has been synthesized and characterized by means of different spectroscopic techniques (UV-vis, Fourier transform IR, electron paramagnetic resonance) and its magnetic and stability properties. The inhibitory effect on bovine alkaline phosphatase (ALP) activity has been tested for the free ligand, the complex as well as for the vanadyl(IV) (comparative purposes). The biological activity of the complex on the proliferation of two osteoblast-like cells in culture, a normal one (MC3T3E1) and a tumoral one (UMR106), has been compared with that of the vanadyl(IV) cation and quercetin. The differentiation osteoblast markers ALP specific activity and collagen synthesis have been also tested. In addition, the effect of QuerVO on the activation of the extracellular regulated kinase (ERK) pathway is reported. The bone antitumoral effect of quercetin alone was established with the cell proliferation assays (it inhibits the proliferation of the tumoral cells and does not exert any effect on the normal osteoblasts). Moreover, the complex exerts osteogenic effects since it stimulates the type I collagen production and is a weak inhibitory agent upon ALP activity. Finally, QuerVO stimulated the ERK phosphorylation in a dose-response manner and this activation seems to be involved as one of the possible mechanisms for the biological effects of the complex.
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Affiliation(s)
- Evelina G Ferrer
- CEQUINOR (Centro de Química Inorgánica), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115, 1900 La Plata, Argentina
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Williams PAM, Ferrer EG, Baeza N, Piro OE, Baran EJ. New Saccharinato/Ammonia Complexes of Nickel(II) and Zinc(II). A Structural and Spectroscopic Study. Z Anorg Allg Chem 2006. [DOI: 10.1002/zaac.200600122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Williams PAM, Etcheverry SB, Barrio DA, Baran EJ. Synthesis, characterization, and biological activity of oxovanadium(IV) complexes with polyalcohols. Carbohydr Res 2006; 341:717-24. [PMID: 16458276 DOI: 10.1016/j.carres.2006.01.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [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: 10/20/2005] [Revised: 12/27/2005] [Accepted: 01/09/2006] [Indexed: 11/25/2022]
Abstract
Oxovanadium(IV) complexes of the polyalcohols sorbitol, galactitol, and mannitol, of stoichiometry Na(2)[VO(L)(2)].H(2)O, were obtained from aqueous alkaline solutions. They were characterized by elemental analysis, infrared and UV-vis spectroscopies, thermoanalytical (thermogravimetric and differential thermal analysis) data, and magnetic susceptibility measurements. The biological activities of the complexes on the proliferation, differentiation, and glucose consumption were tested on osteoblast-like cells (MC3T3E1 osteoblastic mouse calvaria-derived cells and UMR106 rat osteosarcoma-derived cells) in culture. The three complexes exerted a biphasic effect on cell proliferation, being slight stimulating agents at low concentrations and inhibitory in the range of 25-100 microM. All the complexes inhibited cell differentiation in tumor osteoblasts. Their effects on glucose consumption were also discussed. The free ligands did not show any effect on the studied biological parameters.
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Affiliation(s)
- Patricia A M Williams
- 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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Williams PAM, Ferrer EG, Baeza N, Piro OE, Baran EJ. New Saccharinato/Ammonia Complexes of Nickel(II) and Zinc(II). A Structural and Spectroscopic Study. Z Anorg Allg Chem 2006. [DOI: 10.1002/zaac.200500471] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abstract
The interaction of the VO2+ cation with meso-2,3-dimercaptosuccinic acid (DMSA) was investigated by electron absorption spectroscopy in aqueous solution at different pH values. The spectral behavior, complemented with a spectrophotometric titration, shows the generation of a [VO(DMSA)2]2- complex in which the oxocation interacts with two pairs of deprotonated -SH groups of the acid. It was also found that DMSA rapidly reduces VO3- to VO2+, which might be chelated by an excess of the acid. DMSA can also produce the partial reduction of a V2O5 suspension at pH=5.2. The results of this study suggest that DMSA might be a potentially useful detoxification agent for vanadium.
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Affiliation(s)
- P A M Williams
- 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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Etcheverry SB, Barrio DA, Zinczuk J, Williams PAM, Baran EJ. Synthesis, characterization and biological activity of oxovanadium (IV) complexes with cyclic polyalcohols. J Inorg Biochem 2005; 99:2322-7. [PMID: 16219358 DOI: 10.1016/j.jinorgbio.2005.08.013] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Received: 05/26/2005] [Revised: 07/06/2005] [Accepted: 08/26/2005] [Indexed: 10/25/2022]
Abstract
Oxovanadium (IV) complexes of the cyclic polyols conduritol C (cond) and myo-inositol (inos) of stoichiometry Na(2)[VO(cond)(2)].2H(2)O and Na(2)[VO(inos)(2)].H(2)O were obtained in aqueous alkaline solutions. They were characterized by infrared and UV-Vis spectroscopies, thermoanalytical (thermogravimetric and differential thermal analysis) data and magnetic susceptibility measurements. The biological activities of the complexes on the proliferation, differentiation and glucose consumption were tested on osteoblast-like cells in culture. Conduritol C and myo-inositol did not produce any effect on these parameters. Normal and tumoral cell proliferation was inhibited about (ca.40-60%) by the two oxovanadium (IV) complexes in concentrations as low as 100microM. The complexes were also inhibitory on cell differentiation (ca. 70-80%) while they stimulate glucose consumption. Comparisons of these effects with those of the oxovanadium (IV) cation, under the same experimental conditions, were also performed.
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Affiliation(s)
- Susana B Etcheverry
- 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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Williams PAM, Ferrer EG, Baeza N, Piro OE, Castellano EE, Baran EJ. Transition Metal Promoted Addition of Methanol to Cyanoguanidine. Molecular Structure and Properties of the Generated Copper(II) and Nickel(II) Complexes. Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200500002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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