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Segat BB, Menezes LB, Cervo R, Cargnelutti R, Tolentino H, Latini A, Horn A, Fernandes C. Scavenging of reactive species probed by EPR and ex-vivo nanomolar reduction of lipid peroxidation of manganese complexes. J Inorg Biochem 2023; 239:112060. [PMID: 36402588 DOI: 10.1016/j.jinorgbio.2022.112060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/12/2022] [Accepted: 10/29/2022] [Indexed: 11/08/2022]
Abstract
Antioxidant activity toward H2O2, anion radical superoxide, hydroxyl and DPPH (2,2-diphenyl-1-picrylhydrazyl) of two manganese complexes [Mn(III)(bpa)2]Cl.H2O (1) and [(Cl)Mn(μ-hbpclnol)(μ-bpclnol)Mn](ClO4).3H2O (2) (hbpa = (2-hydroxybenzyl-2-pyridylmethyl)amine and h2bpclnol = (N-(2-hydroxybenzyl)-N-(2-pyridylmethyl)[(3-chloro)(2-hydroxy)]propylamine) are presented. X-ray diffraction studies were performed for complex (1). Both complexes presented similar or better activities than reference complex [Mn(salen)Cl], when the interaction between them and ROS (H2O2, O2•- and •OH), was monitored, by EPR (Electron Paramagnetic Resonance), in PBS, DMSO and water. The antioxidant activity rank of complexes toward •OH, generated by Fenton reaction and monitored by EPR, is (2) > (1) > [Mn(salen)Cl], in water (0.1% of DMSO for each complex), with the values of the IC50 of 7.2 (±1.6), 15.5 (±1.8) and 29.1 (±2.01) μM respectively. EPR data presented herein suggest that complex (2) presents the better scavenging activity toward hydroxyl, being in good agreement with TBARS assay results, in which complex (2) presented the best inhibitory activity toward lipid peroxidation, employing Swiss mice liver homogenate tissue model. IC50 values obtained from the interaction between these complexes and hydroxyl, using TBARS method, were: 0.88 (± 0.029); 0.73 (± 0.01) and 42.7 (± 3.5) nM, respectively for (1), (2) and [Mn(salen)Cl]. Complexes (1) and (2) are regulating the lipid homeostasis, protecting the tissue from the lipid peroxidation, in nanomolar scale, motivating in vivo studies. Redox properties and radical scavenging activity of complexes toward DPPH are non-linear and solvent dependent. Furthermore, the monitoring of antioxidant activity probed by EPR could be a fair and appropriate study to guide more advanced investigations.
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Affiliation(s)
- Bruna B Segat
- Departamento de Química, Universidade Federal de Santa Catarina, 88040-900 Florianópolis, SC, Brazil
| | - Lucas B Menezes
- Departamento de Química, Universidade Federal de Santa Catarina, 88040-900 Florianópolis, SC, Brazil
| | - Rodrigo Cervo
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Roberta Cargnelutti
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Hugo Tolentino
- LABOX, Departamento de Bioquímica, Universidade Federal de Santa Catarina, 88040-900 Florianópolis, SC, Brazil
| | - Alexandra Latini
- LABOX, Departamento de Bioquímica, Universidade Federal de Santa Catarina, 88040-900 Florianópolis, SC, Brazil
| | - Adolfo Horn
- Departamento de Química, Universidade Federal de Santa Catarina, 88040-900 Florianópolis, SC, Brazil
| | - Christiane Fernandes
- Departamento de Química, Universidade Federal de Santa Catarina, 88040-900 Florianópolis, SC, Brazil.
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Jilani NAK, Zakariah EI, Ariffin EY, Sapari S, Nokarajoo D, Yamin B, Hasbullah SA. Highly sensitive pork meat detection using copper(ii) tetraaza complex by electrochemical biosensor. RSC Adv 2023; 13:2104-2114. [PMID: 36712615 PMCID: PMC9832347 DOI: 10.1039/d2ra05701h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Accepted: 12/22/2022] [Indexed: 01/13/2023] Open
Abstract
Three copper(ii) tetraaza complexes [Cu(ii)LBr]Br (1a), [Cu(ii)L(CIO4)](CIO4) (2a) and [Cu(ii)L](CIO4)2 (2b), where L = 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradeca-7,14-diene were prepared and confirmed by FTIR, 1HNMR and 13CNMR. The binding interaction of complex (1a, 2a, 2b) with calf thymus DNA (CT-DNA) was investigated using UV-vis absorption, luminescence titrations, viscosity measurements and molecular docking. The findings suggested that complex 1a, 2a and 2b bind to DNA by electrostatic interaction, and the strengths of the interaction were arranged according to 2b > 1a > 2a. The differences in binding strengths were certainly caused by the complexes' dissimilar charges and counter anions. Complex 2b, with the biggest binding strength towards the DNA, was further applied in developing the porcine sensor. The developed sensor exhibits a broad linear dynamic range, low detection limit, good selectivity, and reproducibility. Analysis of real samples showed that the biosensor had excellent selectivity towards the pork meat compared to chicken and beef meat.
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Affiliation(s)
- Noraisyah Abdul Kadir Jilani
- Department of Chemical Sciences. Faculty Science and Technology, Universiti Kebangsaan Malaysia43600 BangiSelangor Darul EhsanMalaysia
| | - Emma Izzati Zakariah
- Department of Chemical Sciences. Faculty Science and Technology, Universiti Kebangsaan Malaysia43600 BangiSelangor Darul EhsanMalaysia
| | - Eda Yuhana Ariffin
- Department of Chemical Sciences. Faculty Science and Technology, Universiti Kebangsaan Malaysia43600 BangiSelangor Darul EhsanMalaysia
| | - Suhaila Sapari
- Department of Chemical Sciences. Faculty Science and Technology, Universiti Kebangsaan Malaysia43600 BangiSelangor Darul EhsanMalaysia
| | - Devika Nokarajoo
- Department of Chemical Sciences. Faculty Science and Technology, Universiti Kebangsaan Malaysia43600 BangiSelangor Darul EhsanMalaysia
| | - Bohari Yamin
- Department of Chemical Sciences. Faculty Science and Technology, Universiti Kebangsaan Malaysia43600 BangiSelangor Darul EhsanMalaysia
| | - Siti Aishah Hasbullah
- Department of Chemical Sciences. Faculty Science and Technology, Universiti Kebangsaan Malaysia43600 BangiSelangor Darul EhsanMalaysia
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Qiu D, Deng Y, Wen Y, Yin J, Feng J, Huang J, Song M, Zhang G, Chen C, Xia J. Iron corroded granules inhibiting vascular smooth muscle cell proliferation. Mater Today Bio 2022; 16:100420. [PMID: 36110422 PMCID: PMC9468459 DOI: 10.1016/j.mtbio.2022.100420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 09/01/2022] [Accepted: 09/03/2022] [Indexed: 11/17/2022]
Abstract
In-stent restenosis after interventional therapy remains a severe clinical complication. Current evidence indicates that neointimal hyperplasia induced by vascular smooth muscle cell (VSMC) proliferation is a major cause of restenosis. Thus, inhibiting VSMC proliferation is critical for preventing in-stent restenosis. The incidence of restenosis was reduced in nitrided iron-based stents (hereafter referred to as iron stents). We hypothesized that the corroded granules produced by the iron stent would prevent in-stent restenosis by inhibiting VSMC proliferation. To verify this hypothesis, we introduced a dynamic circulation device to analyze the components of corroded granules. To investigate the effects of corroded granules on VSMC proliferation, we implanted the corroded iron stent into the artery of the atherosclerotic artery stenosis model. Moreover, we explored the mechanism underlying the inhibition of VSMC proliferation by iron corroded granules. The results indicated that iron stent produced the corroded granules after implantation, and the main component of the corrosion granules was iron oxide. Remarkably, the corroded granules reduced the neointimal hyperplasia in an atherosclerotic artery stenosis model, and iron corroded granules decreased the neointimal hyperplasia by inhibiting VSMC proliferation. In addition, we revealed that corroded granules reduced VSMC proliferation by activating autophagy through the AMPK/mTOR signaling pathway. Importantly, safety of iron corroded granules was evaluated and proved to be satisfactory hemocompatibility in rabbit model. Overall, the role of corroded granules in restenosis prevention was described for the first time. This finding highlighted the implication of corroded granules produced by iron stent in inhibiting VSMC proliferation, pointing to a new direction to prevent in-stent restenosis.
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Affiliation(s)
- Dongxu Qiu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, PR China
| | - Yalan Deng
- NHC Key Laboratory of Cancer Proteomics & Laboratory of Structural Biology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, PR China
| | - Yanbin Wen
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, PR China
| | - Jun Yin
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, PR China
| | - Jie Feng
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, PR China
| | - Jiabing Huang
- Department of Cardiology, The Second Affiliated Hospital of Nanchang University, Jiangxi, Nanchang, PR China
| | - Mingyu Song
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, PR China
| | - Gui Zhang
- R&D Center, Lifetech Scientific (Shenzhen) Co Ltd, Shenzhen, 518057, PR China
| | - Changqing Chen
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, PR China
- Corresponding author.
| | - Jian Xia
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, PR China
- Corresponding author.
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Khursheed S, Rafiq Wani M, Shadab G, Tabassum S, Arjmand F. Synthesis, Structure Elucidation by Multi-spectroscopic Techniques and Single-crystal X-ray Diffraction of Promising Fluoro/Bromo-substituted-chromone(bpy)copper(II) Anticancer Drug Entities. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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A new palladium-based antiproliferative agent: synthesis, characterization, computational calculations, cytotoxicity, and DNA binding properties. Biometals 2021; 34:1173-1189. [PMID: 34363565 DOI: 10.1007/s10534-021-00335-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 07/29/2021] [Indexed: 10/20/2022]
Abstract
A new palladium(II) complex entitled [Pd(phendione)(8Q)]NO3, (PdPQ), where phendione is N,N-donor heterocyclic 1,10-phenanthroline-5,6-dion and 8Q is 8-hydroxyquinolinate, has been synthesized and then characterized by molar conductivity, CHN analysis and spectral data (UV-Vis, FT-IR, NMR). DFT/ TDDFT procedures were also performed to determine the electronic structure and the nature of the electronic transitions of PdPQ. Moreover, the affinity and binding properties of DNA to the desired complex have been studied in details using electronic absorption, fluorescence, circular dichroism spectroscopies, and viscosity measurement in combination with molecular docking technique. The obtained results exhibit relatively high DNA binding values with a static quenching mechanism, which suggest that an intercalative mode plays a peridominate role in interaction process concluded by experimental/theoretical measurements. As a result of drug exposure, in vitro cytotoxicity assay demonstrated the antiproliferative activity of the PdPQ against leukemia cancer cell line, K562.
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Sahin C, Mutlu D, Nasirli F, Mahmoudi G, Zubkov FI, Arslan S, Dogan NM. New iridium bis-terpyridine complexes: synthesis, characterization, antibiofilm and anticancer potentials. Biometals 2021; 34:701-713. [PMID: 33900533 DOI: 10.1007/s10534-021-00307-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 04/15/2021] [Indexed: 11/25/2022]
Abstract
This study represents synthesis, characterization, screening of antibiofilm efficacy, and cytotoxicity of iridium bis-terpyridine complexes. The complexes were characterized by NMR, MS, FTIR, UV/Visible, and fluorescence spectroscopies. The efficacy of biofilm inhibition and eradication of iridium complexes was evaluated using a crystal violet assay test and verified by fluorescence microscopy. Cytotoxicity and apoptosis analysis of iridium complexes were determined in this study. The results of our study revealed that three iridium complexes had the potential to inhibit biofilm formation and moderate the ability to destroy pre-formed biofilm of S. aureus ATCC 29,213. 250 µM concentration of synthesized complexes showed the highest antibiofilm activity (75% for Ir1, 90% for Ir2, and 71% for Ir3). The significant inhibition obtained at 6.25 µM concentration of Ir2 and Ir3 revealed the potential of our samples. Also, Ir1 and Ir2 complexes had a good capacity to destroy pre-formed biofilm. The results clearly showed that iridium complexes have cytotoxic activity towards colon cancer (Caco-2) and liver cancer (HepG2) cell lines without affecting non-cancerous cells (HEK293) at applied doses. Moreover, tested compounds induced apoptosis in these cancer cells. All of these results showed that iridium complexes had possessed the ability to inhibit or destroy pre-formed biofilm and could be developed as an effective agent against bacterial biofilms. Moreover, these pure substances may have valuable anti-cancer activity and it should be confirmed with further studies for therapeutic effects.
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Affiliation(s)
- Cigdem Sahin
- Department of Chemistry, Art & Science Faculty, Pamukkale University, 20160, Denizli, Turkey.
| | - Dogukan Mutlu
- Department of Biology, Art & Science Faculty, Pamukkale University, 20160, Denizli, Turkey
| | - Farid Nasirli
- Department of Biology, Art & Science Faculty, Pamukkale University, 20160, Denizli, Turkey
| | - Ghodrat Mahmoudi
- Department of Chemistry, Faculty of Science, University of Maragheh, P.O. Box 55181-83111, Maragheh, Iran.
| | - Fedor I Zubkov
- Organic Chemistry Department, Faculty of Science, Peoples Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198, Moscow, Russian Federation
| | - Sevki Arslan
- Department of Biology, Art & Science Faculty, Pamukkale University, 20160, Denizli, Turkey.
| | - Nazime Mercan Dogan
- Department of Biology, Art & Science Faculty, Pamukkale University, 20160, Denizli, Turkey
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Recent advances in iron oxide nanoparticles for brain cancer theranostics: from in vitro to clinical applications. Expert Opin Drug Deliv 2021; 18:949-977. [PMID: 33567919 DOI: 10.1080/17425247.2021.1888926] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Introduction: Today, the development of multifunctional nanoplatforms is more seriously considered in the field of cancer theranostics.Areas covered: In this respect, nanoparticles provide several advantages over the routine, conventional diagnostic methods, and treatments. Due to the expedient properties of iron oxide nanoparticles, such as being readily modified, great payload potential, intrinsic magnetic qualification, considerable biocompatibility, and overwhelming response to targeting strategies, these nanoparticles can be considered good candidates for application as diagnostic contrast agents and drug/gene delivery vehicles, while also being incorporated into hyperthermia-based approaches. Interestingly, these agents are detectable with routine imaging modalities such as magnetic resonance imaging.Expert opinion: Therefore, combining the traditional diagnostics and therapies with nanotechnological approaches may leave a positive impact on the survival rate of patients with cancer. This review summarizes the application of magnetic iron oxide nanoparticles in both in vitro and in vivo models of brain tumors.
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