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Lanza V, Vecchio G. New Glycosalen-Manganese(III) Complexes and RCA 120 Hybrid Systems as Superoxide Dismutase/Catalase Mimetics. Biomimetics (Basel) 2023; 8:447. [PMID: 37754198 PMCID: PMC10527547 DOI: 10.3390/biomimetics8050447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 09/17/2023] [Accepted: 09/19/2023] [Indexed: 09/28/2023] Open
Abstract
Reactive oxygen species are implicated in several human diseases, including neurodegenerative disorders, cardiovascular dysfunction, inflammation, hereditary diseases, and ageing. MnIII-salen complexes are superoxide dismutase (SOD) and catalase (CAT) mimetics, which have shown beneficial effects in various models for oxidative stress. These properties make them well-suited as potential therapeutic agents for oxidative stress diseases. Here, we report the synthesis of the novel glycoconjugates of salen complex, EUK-108, with glucose and galactose. We found that the complexes showed a SOD-like activity higher than EUK-108, as well as peroxidase and catalase activities. We also investigated the conjugate activities in the presence of Ricinus communis agglutinin (RCA120) lectin. The hybrid protein-galactose-EUK-108 system showed an increased SOD-like activity similar to the native SOD1.
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Affiliation(s)
- Valeria Lanza
- Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Via Gaifami 18, 95125 Catania, Italy;
| | - Graziella Vecchio
- Dipartimento di Scienze Chimiche, Università di Catania, Viale A. Doria 6, 95125 Catania, Italy
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2
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Yazdian-Robati R, Hedayati N, Dehghani S, Ramezani M, Alibolandi M, Saeedi M, Abnous K, Taghdisi SM. Application of the catalytic activity of gold nanoparticles for development of optical aptasensors. Anal Biochem 2021; 629:114307. [PMID: 34273317 DOI: 10.1016/j.ab.2021.114307] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 06/04/2021] [Accepted: 07/11/2021] [Indexed: 01/15/2023]
Abstract
Biosensor technology is considered to be a great alternative in analytical techniques over the conventional methods. Among many recently developed techniques and devices, aptasensors are interesting because of their high specificity, selectivity and sensitivity. Combining aptamer as a biological recognition element with gold nanoparticles (AuNPs) as probe, are becoming more general owing to their beneficial properties, including low cost and ability to analyze specific targets on-site and using naked eye. Hydrogen bonds, nucleic acid hybridization, aptamer-target and antigen-antibody binding, Raman signature, enzyme inhibition, and enzyme-mimicking activity are main different sensing strategies exploited in AuNPs-based optical aptasensors. In this review article, we discussed the recent advances in optical aptasensors with a special emphasis on the catalytic activity property of AuNPs.
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Affiliation(s)
- Rezvan Yazdian-Robati
- Molecular and Cell Biology Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Narges Hedayati
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Shahrzad Dehghani
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Ramezani
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mona Alibolandi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Majid Saeedi
- Department of Pharmaceutics, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Khalil Abnous
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Seyed Mohammad Taghdisi
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
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3
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Baba SA, Jain S, Navani NK. A reliable, quick and universally applicable method for monitoring aptamer SELEX progress. Gene 2021; 774:145416. [PMID: 33444681 DOI: 10.1016/j.gene.2021.145416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 10/31/2020] [Accepted: 01/05/2021] [Indexed: 10/22/2022]
Abstract
Nucleic acid aptamers for biosensing are developed from a complex ssDNA library through Systematic Evolution of Ligands by Exponential Enrichment (SELEX) process. Monitoring of SELEX process is crucial for generating high-affinity aptamers. Extant methods for monitoring aptamer selection are either arduous or give false-positive signals, which adversely impact the outcome of selection. We describe a colorimetric, simple and cost-effective, novel method to monitor the progress of in vitro selections. The power of rolling circle amplification (RCA) and inherent Horse Radish Peroxidase (HRP)-mimicking activity of G-quadruplex/hemin DNAzyme were employed to produce a colorimetric signal. A unique extension of DNA population at 3'-OH end by PCR generated concatenated repeats by rolling circle amplification (RCA) reaction. Oxidation of substrate ABTS (2, 2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid)) in presence of H2O2 and hemin cofactor produced colorimetric signal. Analysis of the signal generated by the DNA pool bound to their target provided a quantitative measurement of SELEX. We demonstrate the reproducibility and accuracy of the method by evaluating the progress of two discrete selections.
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Affiliation(s)
- Shahnawaz A Baba
- Chemical Biology Lab, Department of Biotechnology, Indian Institute of Technology Roorkee 247667, India
| | - Shubham Jain
- Chemical Biology Lab, Department of Biotechnology, Indian Institute of Technology Roorkee 247667, India
| | - Naveen K Navani
- Chemical Biology Lab, Department of Biotechnology, Indian Institute of Technology Roorkee 247667, India.
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4
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Levín P, Ruiz MC, Romo AIB, Nascimento OR, Di Virgilio AL, Oliver AG, Ayala AP, Diógenes ICN, León IE, Lemus L. Water-mediated reduction of [Cu(dmp) 2(CH 3CN)] 2+: implications of the structure of a classical complex on its activity as an anticancer drug. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00233c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
[Cu(dmp)2(CH3CN)]2+ can be reduced in acetonitrile containing water due to steric constraints of the ligands. Hydroxyl radicals are produced from water oxidation. We take advantage of this reaction to evaluate the anticancer activity of the complex.
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Affiliation(s)
- Pedro Levín
- Departamento de Química de los Materiales
- Facultad de Química y Biología
- Universidad de Santiago de Chile
- Santiago
- Chile
| | - María C. Ruiz
- Centro de Química Inorgánica CEQUINOR (CONICET-UNLP)
- La Plata
- Argentina
| | - Adolfo I. B. Romo
- Departamento de Química Orgânica e Inorgânica Universidade Federal do Ceará
- Fortaleza
- Brazil
| | - Otaciro R. Nascimento
- Departamento de Física Interdiciplinar
- Instituto de Física de São Carlos Universidade de São Paulo
- CEP 13560-970 São Carlos
- Brazil
| | | | - Allen G. Oliver
- Department of Chemistry and Biochemistry
- University of Notre Dame
- 46556-5670 Notre Dame
- USA
| | | | - Izaura C. N. Diógenes
- Departamento de Química Orgânica e Inorgânica Universidade Federal do Ceará
- Fortaleza
- Brazil
| | - Ignacio E. León
- Centro de Química Inorgánica CEQUINOR (CONICET-UNLP)
- La Plata
- Argentina
| | - Luis Lemus
- Departamento de Química de los Materiales
- Facultad de Química y Biología
- Universidad de Santiago de Chile
- Santiago
- Chile
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Rouco L, Maneiro M. Neuroprotective effects of metalosalen complexes against oxidative stress. Neural Regen Res 2021; 16:121-122. [PMID: 32788463 PMCID: PMC7818873 DOI: 10.4103/1673-5374.286966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Affiliation(s)
- Lara Rouco
- Departamento de Química Inorgánica, Universidade de Santiago de Compostela, Lugo, Spain
| | - Marcelino Maneiro
- Departamento de Química Inorgánica, Universidade de Santiago de Compostela, Lugo, Spain
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Pursuing the Elixir of Life: In Vivo Antioxidative Effects of Manganosalen Complexes. Antioxidants (Basel) 2020; 9:antiox9080727. [PMID: 32785017 PMCID: PMC7465912 DOI: 10.3390/antiox9080727] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 07/31/2020] [Accepted: 08/07/2020] [Indexed: 12/15/2022] Open
Abstract
Manganosalen complexes are coordination compounds that possess a chelating salen-type ligand, a class of bis-Schiff bases obtained by condensation of salicylaldehyde and a diamine. They may act as catalytic antioxidants mimicking both the structure and the reactivity of the native antioxidant enzymes active site. Thus, manganosalen complexes have been shown to exhibit superoxide dismutase, catalase, and glutathione peroxidase activities, and they could potentially facilitate the scavenging of excess reactive oxygen species (ROS), thereby restoring the redox balance in damaged cells and organs. Initial catalytic studies compared the potency of these compounds as antioxidants in terms of rate constants of the chemical reactivity against ROS, giving catalytic values approaching and even exceeding that of the native antioxidative enzymes. Although most of these catalytic studies lack of biological relevance, subsequent in vitro studies have confirmed the efficiency of many manganosalen complexes in oxidative stress models. These synthetic catalytic scavengers, cheaper than natural antioxidants, have accordingly attracted intensive attention for the therapy of ROS-mediated injuries. The aim of this review is to focus on in vivo studies performed on manganosalen complexes and their activity on the treatment of several pathological disorders associated with oxidative damage. These disorders, ranging from the prevention of fetal malformations to the extension of lifespan, include neurodegenerative, inflammatory, and cardiovascular diseases; tissue injury; and other damages related to the liver, kidney, or lungs.
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Rouco L, Liberato A, Fernández-Trujillo MJ, Máñez A, Basallote MG, Alvariño R, Alfonso A, Botana LM, Maneiro M. Salen‑manganese complexes for controlling ROS damage: Neuroprotective effects, antioxidant activity and kinetic studies. J Inorg Biochem 2019; 203:110918. [PMID: 31759263 DOI: 10.1016/j.jinorgbio.2019.110918] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 11/04/2019] [Accepted: 11/10/2019] [Indexed: 12/23/2022]
Abstract
A new manganese(III) complex [MnL1(DCA)(H2O)](H2O),1 [H2L1 is the chelating ligand N,N'-bis(2-hydroxy-3-methoxybenzylidene)-1,2-diaminopropane, and DCA is dicyanamide], has been prepared and characterized by different analytical and spectroscopic techniques. The tetragonally elongated octahedral geometry for the manganese coordination sphere was revealed by X-ray diffraction studies for 1. The antioxidant behavior of this complex and other manganese(III)-salen type complexes was tested through superoxide dismutase and catalase probes, and through the study of their neuroprotective effects in SH-SY5Y neuroblastoma cells. In this human neuronal model, these model complexes were found to improve cell survival in an oxidative stress model. During studies aimed to getting a better understanding of the kinetics of the processes involved in this antioxidant behavior, an important effect on the solvent in the kinetics of reaction of the complexes with H2O2 was revealed that suggests a change in the mechanism of reaction of the complexes. The kinetic data in methanol and buffered aqueous solutions correlate well with the results of the test of catalase activity, thus showing that the rate determining step in the catalytic cycle corresponds to the initial reaction of the complexes with H2O2.
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Affiliation(s)
- Lara Rouco
- Departamento de Química Inorgánica, Facultade de Ciencias, Campus Terra, Universidade de Santiago de Compostela, Lugo, Spain
| | - Andrea Liberato
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, Cádiz, Spain
| | - M Jesús Fernández-Trujillo
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, Cádiz, Spain
| | - Angeles Máñez
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, Cádiz, Spain
| | - Manuel G Basallote
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, Cádiz, Spain
| | - Rebeca Alvariño
- Departamento. de Farmacología, Facultade de Veterinaria, Campus Terra, Universidade de Santiago de Compostela, Lugo, Spain
| | - Amparo Alfonso
- Departamento. de Farmacología, Facultade de Veterinaria, Campus Terra, Universidade de Santiago de Compostela, Lugo, Spain
| | - Luis M Botana
- Departamento. de Farmacología, Facultade de Veterinaria, Campus Terra, Universidade de Santiago de Compostela, Lugo, Spain
| | - Marcelino Maneiro
- Departamento de Química Inorgánica, Facultade de Ciencias, Campus Terra, Universidade de Santiago de Compostela, Lugo, Spain.
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Electrochemical Conversion of the Lignin Model Veratryl Alcohol to Veratryl Aldehyde Using Manganese(III)-Schiff Base Homogeneous Catalysts. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9163430] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Lignin and other colored structures need to be bleached after the Kraft process in the pulp industry. Development of environmentally-safe bleaching catalysts or electrocatalysts constitutes an attractive strategy for selective removal of lignin. Seven manganese(III)-complexes with Schiff base ligands 1–7 were synthetized and characterized by different analytical and spectroscopic techniques. The tetragonally elongated octahedral geometry for the manganese coordination sphere and the global µ-aquo dimeric structure were revealed by X-ray diffraction (XRD) studies for 1, Mn2L12(H2O)2(N(CN)2)2 (N(CN)2 = dicyanamide). Complexes 1–4 behave as more efficient peroxidase mimics as compared to 5–7. Electrochemical oxidation of the lignin model veratrylalcohol (VA) to veratrylaldehyde (VAH) is efficiently catalyzed by a type of dimanganese(III) complexes in a chlorine-free medium. The electrocatalytic reaction proceeds through the oxidation of chloride into hypochlorite at alkaline pH along with the formation of hydrogen from water as a subproduct.
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