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Graziani C, Barile A, Antonelli L, Fiorillo A, Ilari A, Vetica F, di Salvo ML, Paiardini A, Tramonti A, Contestabile R. The Z isomer of pyridoxilidenerhodanine 5'-phosphate is an efficient inhibitor of human pyridoxine 5'-phosphate oxidase, a crucial enzyme in vitamin B 6 salvage pathway and a potential chemotherapeutic target. FEBS J 2024. [PMID: 39288205 DOI: 10.1111/febs.17274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 07/30/2024] [Accepted: 09/02/2024] [Indexed: 09/19/2024]
Abstract
Pyridoxal 5'-phosphate (PLP), the catalytically active form of vitamin B6, acts as a cofactor in many metabolic processes. In humans, PLP is produced in the reactions catalysed by pyridox(am)ine 5'-phosphate oxidase (PNPO) and pyridoxal kinase (PDXK). Both PNPO and PDXK are involved in cancer progression of many tumours. The silencing of PNPO and PDXK encoding genes determines a strong reduction in tumour size and neoplastic cell invasiveness in models of acute myeloid leukaemia (in the case of PDXK) and ovarian and breast cancer (in the case of PNPO). In the present work, we demonstrate that pyridoxilidenerhodanine 5'-phosphate (PLP-R), a PLP analogue that has been tested by other authors on malignant cell lines reporting a reduction in proliferation, inhibits PNPO in vitro following a mixed competitive and allosteric mechanism. We also show that the unphosphorylated precursor of this inhibitor (PL-R), which has more favourable pharmacokinetic properties according to our predictions, is phosphorylated by PDXK and therefore transformed into PLP-R. On this ground, we propose the prototype of a novel prodrug-drug system as a useful starting point for the development of new, potential, antineoplastic agents.
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Affiliation(s)
- Claudio Graziani
- Dipartimento di Scienze Biochimiche "A. Rossi Fanelli", Sapienza Università di Roma, Italy
| | - Anna Barile
- Istituto di Biologia e Patologia Molecolari, Consiglio Nazionale delle Ricerche, Rome, Italy
| | - Lorenzo Antonelli
- Dipartimento di Scienze Biochimiche "A. Rossi Fanelli", Sapienza Università di Roma, Italy
| | - Annarita Fiorillo
- Dipartimento di Scienze Biochimiche "A. Rossi Fanelli", Sapienza Università di Roma, Italy
| | - Andrea Ilari
- Istituto di Biologia e Patologia Molecolari, Consiglio Nazionale delle Ricerche, Rome, Italy
| | | | - Martino Luigi di Salvo
- Dipartimento di Scienze Biochimiche "A. Rossi Fanelli", Sapienza Università di Roma, Italy
| | - Alessandro Paiardini
- Dipartimento di Scienze Biochimiche "A. Rossi Fanelli", Sapienza Università di Roma, Italy
| | - Angela Tramonti
- Istituto di Biologia e Patologia Molecolari, Consiglio Nazionale delle Ricerche, Rome, Italy
| | - Roberto Contestabile
- Dipartimento di Scienze Biochimiche "A. Rossi Fanelli", Sapienza Università di Roma, Italy
- Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
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2
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Hu J, Tian J, Deng X, Liu X, Zhou F, Yu J, Chi R, Xiao C. Heterotrophic nitrification processes driven by glucose and sodium acetate: New insights into microbial communities, functional genes and nitrogen metabolism from metagenomics and metabolomics. BIORESOURCE TECHNOLOGY 2024; 408:131226. [PMID: 39111401 DOI: 10.1016/j.biortech.2024.131226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Revised: 07/30/2024] [Accepted: 08/04/2024] [Indexed: 08/10/2024]
Abstract
Heterotrophic nitrification (HN) bacteria use organic carbon sources to remove ammonia nitrogen (NH4+-N); however, the mechanisms of carbon and nitrogen metabolism are unknown. To understand this mechanism, HN functional microbial communities named MG and MA were enriched with glucose and sodium acetate, respectively. The NH4+-N removal efficiencies were 98.87 % and 98.91 %, with 88.06 % and 69.77 % nitrogen assimilation for MG and MA at 22 h and 10 h, respectively. Fungi (52.86 %) were more competitive in MG, and bacteria (99.99 %) were dominant in MA. Metagenomic and metabolomic analyses indicated that HN might be a signaling molecule (NO) in the production and detoxification processes when MG metabolizes glucose (amo, hao, and nosZ were not detected). MA metabolizes sodium acetate to produce less energy and promotes nitrogen oxidation reduction; however, genes (hao, hox, and NOS2) were not detected. These results suggest that NO and energy requirements induce microbial HN.
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Affiliation(s)
- Jingang Hu
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Key Laboratory for Green Chemical Process of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, PR China
| | - Jiaoyang Tian
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Key Laboratory for Green Chemical Process of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, PR China
| | - Xiangyi Deng
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Key Laboratory for Green Chemical Process of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, PR China
| | - Xuemei Liu
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Key Laboratory for Green Chemical Process of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, PR China
| | - Fang Zhou
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Key Laboratory for Green Chemical Process of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, PR China
| | - Junxia Yu
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Key Laboratory for Green Chemical Process of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, PR China
| | - Ruan Chi
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Key Laboratory for Green Chemical Process of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, PR China; Hubei Three Gorges Laboratory, Yichang 443007, PR China
| | - Chunqiao Xiao
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Key Laboratory for Green Chemical Process of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, PR China; Hubei Three Gorges Laboratory, Yichang 443007, PR China.
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Tarai A, Nath B. A review on oxime functionality: an ordinary functional group with significant impacts in supramolecular chemistry. Chem Commun (Camb) 2024; 60:7266-7287. [PMID: 38916274 DOI: 10.1039/d4cc01397b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
The oxime functional group is pivotal in chemistry, finding extensive applications in medical science, catalysis, organic functional group transformations, and the recognition of essential and toxic analytes. While the coordination chemistry of oxime derivatives has been thoroughly explored and several reviews have been published on this topic in reputable journals, a comprehensive review encompassing various aspects such as crystal engineering, cation and anion recognition, as well as coordination chemistry activities, is still in demand. This feature article highlights the diverse applications of oxime derivatives across multiple domains of chemistry, including medicine, agriculture, crystal engineering, coordination chemistry, and molecular recognition studies. Each of the oxime derivatives in this feature article are meticulously described in terms of their medicinal applications, crop protection, crystal engineering attributes, analyte recognition capabilities, and coordination chemistry aspects. By providing a comprehensive overview of their versatile applications, this article aims to inspire researchers to explore and develop novel oxime-based derivatives for future applications.
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Affiliation(s)
- Arup Tarai
- School of Advanced Sciences and Languages (SASL), VIT Bhopal University, Bhopal-466114, Madya Pradesh, India.
| | - Bhaskar Nath
- Department of Educational Sciences, Assam University Silchar, Assam-788011, India.
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Palacios J, Asunción-Alvarez D, Aravena D, Chiong M, Catalán MA, Parra C, Cifuentes F, Paredes A. A new oxime synthesized from Senecio nutans SCh. Bip (chachacoma) reduces calcium influx in the vascular contractile response in rat aorta. RSC Adv 2024; 14:9933-9942. [PMID: 38528924 PMCID: PMC10962255 DOI: 10.1039/d4ra01058b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Accepted: 03/13/2024] [Indexed: 03/27/2024] Open
Abstract
Senecio nutans Sch. Bip is an endemic plant commonly employed in the Andes culture to counteract the effects of mountain sickness, and its bioactive molecules could provide new drugs for treating hypertension. The purpose was to determine whether the vascular response of the plant bioactive molecules, such as (5-acetyl-6-hydroxy-2-isopropenyl-2,3-dihydrobenzofurane; Sn-I), could be improved by a simple structural modification to synthesize oximes (Ox-Sn-I). We characterized both compounds using IR and NMR spectroscopy and Heteronuclear Multiple Quantum Coherence (HMQC). We investigated vascular relaxation mechanisms in response to Sn-I and Ox-Sn-I using rat aorta and vascular smooth muscle cells (A7r5) as experimental models. Preincubation of aortic rings with Sn-I (10-5 M) significantly (p < 0.001) decreased the contractile effect in response to phenylephrine (PE) and potassium chloride (KCl). The sensitivity (EC50) to PE significantly (p < 0.01) decreased in the presence of Sn-I (10-5 M), but not with Ox-Sn-I. Sn-I significantly (p < 0.001) reduced the PE-induced contraction under calcium-free conditions. When A7r5 cells were preincubated with Sn-I and Ox-Sn-I (10-5 M), both compounds blunted the increase in intracellular Ca2+ induced by KCl. 2,3-Dihydrobenzofurane derived from S. nutans (Sn-I) reduces the contractile response probably by blocking Ca2+ entry through voltage-gated Ca2+ channels (VGCC) in vascular smooth cells. This effect also causes relaxation in rat aorta mediated by reduction of intracellular Ca2+ concentration, rather than an increase of NO generation in endothelial vascular cells.
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Affiliation(s)
- Javier Palacios
- Laboratorio de Bioquímica Aplicada, Facultad de Ciencias de la Salud, Universidad Arturo Prat Iquique 1110939 Chile
| | - Daniel Asunción-Alvarez
- Laboratorio de Bioquímica Aplicada, Facultad de Ciencias de la Salud, Universidad Arturo Prat Iquique 1110939 Chile
| | - Diego Aravena
- Laboratorio de Bioquímica Aplicada, Facultad de Ciencias de la Salud, Universidad Arturo Prat Iquique 1110939 Chile
| | - Mario Chiong
- Universidad de Chile, Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas Santiago Chile
| | - Marcelo A Catalán
- Instituto de Fisiología, Facultad de Medicina, Universidad Austral de Chile Valdivia 5090000 Chile
| | - Claudio Parra
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción Edmundo Larenas 129 Concepción 4070371 Chile
| | - Fredi Cifuentes
- Laboratorio de Fisiología Experimental (EPhyL), Instituto Antofagasta (IA), Universidad de Antofagasta Antofagasta 1271155 Chile
| | - Adrián Paredes
- Departamento de Química, Facultad de Ciencias Básicas, Universidad de Antofagasta Antofagasta 1271155 Chile
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Kumar S, Wadhwa P. Synthesis, molecular docking and biological evaluation of 1,2,4-oxadiazole based novel non-steroidal derivatives against prostate cancer. Bioorg Chem 2024; 143:107029. [PMID: 38091717 DOI: 10.1016/j.bioorg.2023.107029] [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: 10/12/2023] [Revised: 12/01/2023] [Accepted: 12/08/2023] [Indexed: 01/24/2024]
Abstract
Prostate cancer is one of the most prevalent cancers in men leading to second most death causing cancer in men. Despite the availability of multiple treatment still the prevalence is high for prostate cancer. Steroidal antagonists associated with poor bioavailability, side effects while non-steroidal antagonists show serious side effects like gynecomastia. Therefore, there is a need of potential candidate for the treatment of prostate cancer with better bioavailability, good therapeutic effect and minimal side effects. In the same context, we have designed the series, SP1-SP25 based 3-phenyl-5-styryl-1,2,4-oxadiazole as the core structure. We successfully synthesized all 25 molecules in this series and characterized them using 1H, 13C NMR, and mass spectroscopy. Subsequently, we conducted MTT assays using PC-3 cells and observed that all the compounds exhibited a dose-dependent decrease in cell viability. Notably, compounds SP04, SP16, and SP19 demonstrated a significant decrease in cell viability and exhibited potent activity compared to the other synthesized molecules and standard drug bicalutamide. Among them, SP04 emerged as the one of the most potent compounds with an IC50 value of 238.13 nM and an 89.99 % inhibition of PC-3 cells, compared to synthesized molecules and standard drug bicalutamide. Furthermore, we conducted ROS assays and androgen receptor inhibition assays using the potent compound SP04 and bicalutamide. The results indicated that SP04 increased ROS production and decreased androgen receptor expression dose-dependent manner. Additionally, we conducted a docking study to analyse the interaction patterns within the active site of the androgen receptor. ADMET analysis revealed that all the compounds exhibited favorable physicochemical properties and manageable toxicity profiles.
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Affiliation(s)
- Shubham Kumar
- School of Pharmaceutical Sciences, Lovely Professional University, Jalandhar-Delhi G.T. Road, Phagwara, Punjab 144411, India
| | - Pankaj Wadhwa
- School of Pharmaceutical Sciences, Lovely Professional University, Jalandhar-Delhi G.T. Road, Phagwara, Punjab 144411, India.
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6
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Stamou C, Dechambenoit P, Lada ZG, Gkolfi P, Riga V, Raptopoulou CP, Psycharis V, Konidaris KF, Chasapis CT, Perlepes SP. Reactions of Cadmium(II) Halides and Di-2-Pyridyl Ketone Oxime: One-Dimensional Coordination Polymers. Molecules 2024; 29:509. [PMID: 38276587 PMCID: PMC10820575 DOI: 10.3390/molecules29020509] [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: 12/05/2023] [Revised: 01/10/2024] [Accepted: 01/16/2024] [Indexed: 01/27/2024] Open
Abstract
The coordination chemistry of 2-pyridyl ketoximes continues to attract the interest of many inorganic chemistry groups around the world for a variety of reasons. Cadmium(II) complexes of such ligands have provided models of solvent extraction of this toxic metal ion from aqueous environments using 2-pyridyl ketoxime extractants. Di-2-pyridyl ketone oxime (dpkoxH) is a unique member of this family of ligands because its substituent on the oxime carbon bears another potential donor site, i.e., a second 2-pyridyl group. The goal of this study was to investigate the reactions of cadmium(II) halides and dpkoxH in order to assess the structural role (if any) of the halogeno ligand and compare the products with their zinc(II) analogs. The synthetic studies provided access to complexes {[CdCl2(dpkoxH)∙2H2O]}n (1∙2H2O), {[CdBr2(dpkoxH)]}n (2) and {[CdI2(dpkoxH)]}n (3) in 50-60% yields. The structures of the complexes were determined by single-crystal X-ray crystallography. The compounds consist of structurally similar 1D zigzag chains, but only 2 and 3 are strictly isomorphous. Neighboring CdII atoms are alternately doubly bridged by halogeno and dpkoxH ligands, the latter adopting the η1:η1:η1:μ (or 2.0111 using Harris notation) coordination mode. A terminal halogeno group completes distorted octahedral coordination at each metal ion, and the coordination sphere of the CdII atoms is {CdII(η1 - X)(μ - X)2(Npyridyl)2(Noxime)} (X = Cl, Br, I). The trans-donor-atom pairs in 1∙2H2O are Clterminal/Noxime and two Clbridging/Npyridyl; on the contrary, these donor-atom pairs are Xterminal/Npyridyl, Xbridging/Noxime, and Xbridging/Npyridyl (X = Br, I). There are intrachain H-bonding interactions in the structures. The packing of the chains in 1∙2H2O is achieved via π-π stacking interactions, while the 3D architecture of the isomorphous 2 and 3 is built via C-H∙∙∙Cg (Cg is the centroid of one pyridyl ring) and π-π overlaps. The molecular structures of 1∙2H2O and 2 are different compared with their [ZnX2(dpkoxH)] (X = Cl, Br) analogs. The polymeric compounds were characterized by IR and Raman spectroscopies in the solid state, and the data were interpreted in terms of the known molecular structures. The solid-state structures of the complexes are not retained in DMSO, as proven via NMR (1H, 13C, and 113Cd NMR) spectroscopy and molar conductivity data. The complexes completely release the coordinated dpkoxH molecule, and the dominant species in solution seem to be [Cd(DMSO)6]2+ in the case of the chloro and bromo complexes and [CdI2(DMSO)4].
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Affiliation(s)
- Christina Stamou
- Department of Chemistry, University of Patras, 26504 Patras, Greece; (C.S.); (P.G.); (V.R.)
| | - Pierre Dechambenoit
- Centre de Recherche Paul Pascal, UMR 5031, CNRS, University of Bordeaux, 33600 Pessac, France;
| | - Zoi G. Lada
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology-Hellas (FORTH/ICE-HT), Platani, P.O. Box 1414, 26504 Patras, Greece;
| | - Patroula Gkolfi
- Department of Chemistry, University of Patras, 26504 Patras, Greece; (C.S.); (P.G.); (V.R.)
| | - Vassiliki Riga
- Department of Chemistry, University of Patras, 26504 Patras, Greece; (C.S.); (P.G.); (V.R.)
| | - Catherine P. Raptopoulou
- Institute of Nanoscience and Nanotechnology, NCSR “Demokritos”, 15310 Aghia Paraskevi Attikis, Greece;
| | - Vassilis Psycharis
- Institute of Nanoscience and Nanotechnology, NCSR “Demokritos”, 15310 Aghia Paraskevi Attikis, Greece;
| | - Konstantis F. Konidaris
- Department of Chemistry, Materials Science and Chemical Engineering “Giulio Natta”, Via L. Mancinelli 7, 20131 Milan, Italy
| | - Christos T. Chasapis
- Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece
| | - Spyros P. Perlepes
- Department of Chemistry, University of Patras, 26504 Patras, Greece; (C.S.); (P.G.); (V.R.)
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology-Hellas (FORTH/ICE-HT), Platani, P.O. Box 1414, 26504 Patras, Greece;
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Lee GY, Lee SH, Jo IH, Cho CM, Shostak S, Ryu JY, Park BK, Son SU, Choi CH, Eom T, Kim JH, Chung TM. Amidoxime-Containing Zr and Hf Atomic Layer Deposition Precursors for Metal Oxide Thin Films. Inorg Chem 2024; 63:537-547. [PMID: 38108625 DOI: 10.1021/acs.inorgchem.3c03455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
In this article, we discuss the synthesis of eight novel zirconium and hafnium complexes containing amidoxime ligands as potential precursors for atomic layer deposition (ALD). Two amidoximes, viz., (E)-N'-hydroxy-N,N-dimethylacetimidamide (mdaoH) and (Z)-N'-hydroxy-N,N-dimethylpivalimidamide (tdaoH), along with their Zr and Hf homoleptic complexes, Zr(mdao)4 (1), Hf(mdao)4 (2), Zr(tdao)4 (3), and Hf(tdao)4 (4) were prepared. We further synthesized heteroleptic compounds with different physical properties by introducing cyclopentadienyl (Cp) ligand, namely, CpZr(mdao)3 (5), CpHf(mdao)3 (6), CpZr(tdao)3 (7), and CpHf(tdao)3 (8). Thermogravimetric analysis was used for the assessment of the evaporation characteristics of complexes 1, 2, 5, and 6, and it revealed multistep weight losses with high residues. On the other hand, the thermogravimetric analysis curves of complexes 3, 4, 7, and 8 comprising tdao ligands revealed single-step weight losses with moderate residues. Single-crystal X-ray diffraction studies of complexes 1, 3, and 7 showed that all of the complexes have monomeric molecular structures. Complex 7 exhibited a low melting point (75 °C), good volatility, and high thermal stability compared with other complexes. Therefore, an atomic layer deposition process for the growth of ZrO2 was developed by using ZrCp(tdao)3 (7) as a novel precursor.
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Affiliation(s)
- Ga Yeon Lee
- Thin Film Materials Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Seung-Hun Lee
- Department of Advanced Materials Engineering, Hanbat National University, Daejeon 34158, Republic of Korea
| | - In Ho Jo
- Department of Advanced Materials Engineering, Hanbat National University, Daejeon 34158, Republic of Korea
| | - Chan-Mi Cho
- Thin Film Materials Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Svetlana Shostak
- Department of Chemistry, Kyungpook National University, Daegu 41566, South Korea
| | - Ji Yeon Ryu
- Thin Film Materials Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Bo Keun Park
- Thin Film Materials Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
- Department of Chemical Convergence Materials, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Seung Uk Son
- Department of Chemistry, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do 16419, Republic of Korea
| | - Cheol Ho Choi
- Department of Chemistry, Kyungpook National University, Daegu 41566, South Korea
| | - Taeyong Eom
- Thin Film Materials Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Jeong Hwan Kim
- Department of Advanced Materials Engineering, Hanbat National University, Daejeon 34158, Republic of Korea
| | - Taek-Mo Chung
- Thin Film Materials Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
- Department of Chemical Convergence Materials, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
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8
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Kanagaraj K, Wang R, Zhao MK, Ballester P, Rebek J, Yu Y. Selective Binding and Isomerization of Oximes in a Self-Assembled Capsule. J Am Chem Soc 2023; 145:5816-5823. [PMID: 36857099 DOI: 10.1021/jacs.2c12907] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
A series of straight-chain (C7-C13) alkyl-O-methyl aldoximes (R-C(H)═NOMe) were synthesized with various functional groups at the remote ends (alkenes, halogen, -COOH, and NH2). Their isomers about the C═N bond showed ∼60-40% E-Z-ratio in organic solutions. Surprisingly, their confinement in a water-soluble capsule with benzoselenodiazole walls shows high selectivity for the cis-/Z-isomer. Their relative affinities for the chalcogen-bonded capsule at room temperature depend mainly on the guest chain length and functional groups. A chain length of 14 heavy atoms showed especially high E- to Z-isomer selectivity (>99%) and was used in separation. The E-Z isomerization occurred only in the capsular cavity at room temperature and was accelerated 10-fold by sonication. The Z-isomer selective binding, separation, and E-Z isomerization are supported by NMR, DOSY, and computational studies.
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Affiliation(s)
- Kuppusamy Kanagaraj
- Center for Supramolecular Chemistry & Catalysis and Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
| | - Rui Wang
- Center for Supramolecular Chemistry & Catalysis and Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
| | - Ming-Kai Zhao
- Center for Supramolecular Chemistry & Catalysis and Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
| | - Pablo Ballester
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), 43007 Tarragona, Spain.,Catalan Institution for Research and Advanced Studies (ICREA), 08010 Barcelona, Spain
| | - Julius Rebek
- Center for Supramolecular Chemistry & Catalysis and Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China.,Skaggs Institute for Chemical Biology and Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Yang Yu
- Center for Supramolecular Chemistry & Catalysis and Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
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9
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Brody SI, Buonomo JA, Orimoloye MO, Jia Z, Sharma S, Brown CD, Baughn AD, Aldrich CC. A Nucleophilic Activity-Based Probe Enables Profiling of PLP-Dependent Enzymes. Chembiochem 2023; 24:e202200669. [PMID: 36652345 DOI: 10.1002/cbic.202200669] [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: 11/16/2022] [Revised: 01/14/2023] [Accepted: 01/18/2023] [Indexed: 01/19/2023]
Abstract
PLP-dependent enzymes represent an important class of highly "druggable" enzymes that perform a wide array of critical reactions to support all organisms. Inhibition of individual members of this family of enzymes has been validated as a therapeutic target for pathologies ranging from infection with Mycobacterium tuberculosis to epilepsy. Given the broad nature of the activities within this family of enzymes, we envisioned a universally acting probe to characterize existing and putative members of the family that also includes the necessary chemical moieties to enable activity-based protein profiling experiments. Hence, we developed a probe that contains an N-hydroxyalanine warhead that acts as a covalent inhibitor of PLP-dependent enzymes, a linear diazirine for UV crosslinking, and an alkyne moiety to enable enrichment of crosslinked proteins. Our molecule was used to study PLP-dependent enzymes in vitro as well as look at whole-cell lysates of M. tuberculosis and assess inhibitory activity. The probe was able to enrich and identify LysA, a PLP-dependent enzyme crucial for lysine biosynthesis, through mass spectrometry. Overall, our study shows the utility of this trifunctional first-generation probe. We anticipate further optimization of probes for PLP-dependent enzymes will enable the characterization of rationally designed covalent inhibitors of PLP-dependent enzymes, which will expedite the preclinical characterization of these important therapeutic targets.
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Affiliation(s)
- Scott I Brody
- Department of Medicinal Chemistry, University of Minnesota-Twin Cities, 308 Harvard Street SE, Minneapolis, MN 55455, USA
| | - Joseph A Buonomo
- Department of Medicinal Chemistry, University of Minnesota-Twin Cities, 308 Harvard Street SE, Minneapolis, MN 55455, USA
| | - Moyosore O Orimoloye
- Department of Medicinal Chemistry, University of Minnesota-Twin Cities, 308 Harvard Street SE, Minneapolis, MN 55455, USA
| | - Ziyi Jia
- Department of Microbiology and Immunology, University of Minnesota Medical School, Minneapolis, MN 55455, USA
| | - Sachin Sharma
- Department of Medicinal Chemistry, University of Minnesota-Twin Cities, 308 Harvard Street SE, Minneapolis, MN 55455, USA
| | - Christopher D Brown
- Department of Medicinal Chemistry, University of Minnesota-Twin Cities, 308 Harvard Street SE, Minneapolis, MN 55455, USA
| | - Anthony D Baughn
- Department of Microbiology and Immunology, University of Minnesota Medical School, Minneapolis, MN 55455, USA
| | - Courtney C Aldrich
- Department of Medicinal Chemistry, University of Minnesota-Twin Cities, 308 Harvard Street SE, Minneapolis, MN 55455, USA
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10
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Kim J, Thomas SN. Opportunities for Nitric Oxide in Potentiating Cancer Immunotherapy. Pharmacol Rev 2022; 74:1146-1175. [PMID: 36180108 PMCID: PMC9553106 DOI: 10.1124/pharmrev.121.000500] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 05/15/2022] [Accepted: 07/05/2022] [Indexed: 11/22/2022] Open
Abstract
Despite nearly 30 years of development and recent highlights of nitric oxide (NO) donors and NO delivery systems in anticancer therapy, the limited understanding of exogenous NO's effects on the immune system has prevented their advancement into clinical use. In particular, the effects of exogenously delivered NO differing from that of endogenous NO has obscured how the potential and functions of NO in anticancer therapy may be estimated and exploited despite the accumulating evidence of NO's cancer therapy-potentiating effects on the immune system. After introducing their fundamentals and characteristics, this review discusses the current mechanistic understanding of NO donors and delivery systems in modulating the immunogenicity of cancer cells as well as the differentiation and functions of innate and adaptive immune cells. Lastly, the potential for the complex modulatory effects of NO with the immune system to be leveraged for therapeutic applications is discussed in the context of recent advancements in the implementation of NO delivery systems for anticancer immunotherapy applications. SIGNIFICANCE STATEMENT: Despite a 30-year history and recent highlights of nitric oxide (NO) donors and delivery systems as anticancer therapeutics, their clinical translation has been limited. Increasing evidence of the complex interactions between NO and the immune system has revealed both the potential and hurdles in their clinical translation. This review summarizes the effects of exogenous NO on cancer and immune cells in vitro and elaborates these effects in the context of recent reports exploiting NO delivery systems in vivo in cancer therapy applications.
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Affiliation(s)
- Jihoon Kim
- Parker H. Petit Institute for Bioengineering and Bioscience (J.K., S.N.T.), George W. Woodruff School of Mechanical Engineering (J.K., S.N.T.), and Wallace H. Coulter Department of Biomedical Engineering (S.N.T.), Georgia Institute of Technology, Atlanta, Georgia; Winship Cancer Institute, Emory University School of Medicine, Atlanta, Georgia (S.N.T.); and Division of Biological Science and Technology, Yonsei University, Wonju, South Korea (J.K.)
| | - Susan N Thomas
- Parker H. Petit Institute for Bioengineering and Bioscience (J.K., S.N.T.), George W. Woodruff School of Mechanical Engineering (J.K., S.N.T.), and Wallace H. Coulter Department of Biomedical Engineering (S.N.T.), Georgia Institute of Technology, Atlanta, Georgia; Winship Cancer Institute, Emory University School of Medicine, Atlanta, Georgia (S.N.T.); and Division of Biological Science and Technology, Yonsei University, Wonju, South Korea (J.K.)
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11
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Novel Oxime Synthesized from a Natural Product of Senecio nutans SCh. Bip. (Asteraceae) Enhances Vascular Relaxation in Rats by an Endothelium-Independent Mechanism. Molecules 2022; 27:molecules27103333. [PMID: 35630811 PMCID: PMC9146311 DOI: 10.3390/molecules27103333] [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: 05/03/2022] [Revised: 05/17/2022] [Accepted: 05/20/2022] [Indexed: 02/01/2023] Open
Abstract
Senecio nutans Sch. Bip. and its constituents are reported to have antihypertensive effects. We isolated metabolite−1, a natural compound from S. nutans (4-hydroxy-3-(isopenten-2-yl)-acetophenone), and synthesized novel oxime − 1 (4-hydroxy-3-(isopenten-2-yl)-acetophenoxime) to evaluate their effect on vascular reactivity. Compounds were purified (metabolite−1) or synthetized (oxime−1) and characterized using IR and NMR spectroscopy and Heteronuclear Multiple Quantum Coherence (HMQC). Using pharmacological agents such as phenylephrine (PE) and KCl (enhancing contraction), acetylcholine (ACh), L-NAME (nitric oxide (NO) and endothelial function), Bay K8644-induced CaV1.2 channel (calcium channel modulator), and isolated aortic rings in an organ bath setup, the possible mechanisms of vascular action were determined. Pre-incubation of aortic rings with 10−5 M oxime−1 significantly (p < 0.001) decreased the contractile response to 30 mM KCl. EC50 to KCl significantly (p < 0.01) increased in the presence of oxime−1 (37.72 ± 2.10 mM) compared to that obtained under control conditions (22.37 ± 1.40 mM). Oxime−1 significantly reduced (p < 0.001) the contractile response to different concentrations of PE (10−7 to 10−5 M) by a mechanism that decreases Cav1.2-mediated Ca2+ influx from the extracellular space and reduces Ca2+ release from intracellular stores. At a submaximal concentration (10−5 M), oxime−1 caused a significant relaxation in rat aorta even without vascular endothelium or after pre-incubate the tissue with L-NAME. Oxime−1 decreases the contractile response to PE by blunting the release of Ca2+ from intracellular stores and blocking of Ca2+ influx by channels. Metabolite−1 reduces the contractile response to KCl, apparently by reducing the plasma membrane depolarization and Ca2+ influx from the extracellular space. These acetophenone derivates from S. nutans (metabolite−1 and oxime−1) cause vasorelaxation through pathways involving an increase of the endothelial NO generation or a higher bioavailability, further highlighting that structural modification of naturally occurring metabolites can enhance their intended pharmacological functions.
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12
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Kulkarni PS, Sarda SR, Khandebharad AU, Farooqui M, Agrawal BR. Pyrazole Linked-1,2,4-Oxadiazole Derivatives as Potential Pharmacological Agent: Design, Synthesis and Antimicrobial Study. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2072914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | - Swapnil R. Sarda
- Department of Chemistry, J. E. S. College, Jalna, Maharashtra, India
| | | | - Mazahar Farooqui
- Department of Chemistry, Maulana Azad College, Aurangabad, Maharashtra, India
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13
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Dhuguru J, Zviagin E, Skouta R. FDA-Approved Oximes and Their Significance in Medicinal Chemistry. Pharmaceuticals (Basel) 2022; 15:66. [PMID: 35056123 PMCID: PMC8779982 DOI: 10.3390/ph15010066] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 12/28/2021] [Accepted: 12/30/2021] [Indexed: 01/16/2023] Open
Abstract
Despite the scientific advancements, organophosphate (OP) poisoning continues to be a major threat to humans, accounting for nearly one million poisoning cases every year leading to at least 20,000 deaths worldwide. Oximes represent the most important class in medicinal chemistry, renowned for their widespread applications as OP antidotes, drugs and intermediates for the synthesis of several pharmacological derivatives. Common oxime based reactivators or nerve antidotes include pralidoxime, obidoxime, HI-6, trimedoxime and methoxime, among which pralidoxime is the only FDA-approved drug. Cephalosporins are β-lactam based antibiotics and serve as widely acclaimed tools in fighting bacterial infections. Oxime based cephalosporins have emerged as an important class of drugs with improved efficacy and a broad spectrum of anti-microbial activity against Gram-positive and Gram-negative pathogens. Among the several oxime based derivatives, cefuroxime, ceftizoxime, cefpodoxime and cefmenoxime are the FDA approved oxime-based antibiotics. Given the pharmacological significance of oximes, in the present paper, we put together all the FDA-approved oximes and discuss their mechanism of action, pharmacokinetics and synthesis.
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Affiliation(s)
- Jyothi Dhuguru
- Mitchell Cancer Institute, University of South Alabama, 1660 SpringHill Avenue, Mobile, AL 36604, USA;
| | - Eugene Zviagin
- Department of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, MI 48109, USA;
| | - Rachid Skouta
- Department of Biology, University of Massachusetts, Amherst, MA 01003, USA
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14
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Zhang X, Rovis T. Photocatalyzed Triplet Sensitization of Oximes Using Visible Light Provides a Route to Nonclassical Beckmann Rearrangement Products. J Am Chem Soc 2021; 143:21211-21217. [PMID: 34905347 PMCID: PMC8862120 DOI: 10.1021/jacs.1c10148] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Oximes are valuable synthetic intermediates for the preparation of a variety of functional groups. To date, the stereoselective synthesis of oximes remains a major challenge, as most current synthetic methods either provide mixtures of E and Z isomers or furnish the thermodynamically preferred E isomer. Herein we report a mild and general method to achieve Z isomers of aryl oximes by photoisomerization of oximes via visible-light-mediated energy transfer (EnT) catalysis. Facile access to (Z)-oximes provides opportunities to achieve regio- and chemoselectivity complementary to those of widely used transformations employing oxime starting materials. We show an enhanced one-pot protocol for photocatalyzed oxime isomerization and subsequent Beckmann rearrangement that enables novel reactivity with alkyl groups migrating preferentially over aryl groups, reversing the regioselectivity of the traditional Beckmann reaction. Chemodivergent N- or O- cyclizations of alkenyl oximes are also demonstrated, leading to nitrones or cyclic oxime ethers, respectively.
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15
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Melis MR, Argiolas A. Erectile Function and Sexual Behavior: A Review of the Role of Nitric Oxide in the Central Nervous System. Biomolecules 2021; 11:biom11121866. [PMID: 34944510 PMCID: PMC8699072 DOI: 10.3390/biom11121866] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 12/06/2021] [Accepted: 12/08/2021] [Indexed: 12/21/2022] Open
Abstract
Nitric oxide (NO), the neuromodulator/neurotransmitter formed from l-arginine by neuronal, endothelial and inducible NO synthases, is involved in numerous functions across the body, from the control of arterial blood pressure to penile erection, and at central level from energy homeostasis regulation to memory, learning and sexual behavior. The aim of this work is to review earlier studies showing that NO plays a role in erectile function and sexual behavior in the hypothalamus and its paraventricular nucleus and the medial preoptic area, and integrate these findings with those of recent studies on this matter. This revisitation shows that NO influences erectile function and sexual behavior in males and females by acting not only in the paraventricular nucleus and medial preoptic area but also in extrahypothalamic brain areas, often with different mechanisms. Most importantly, since these areas are strictly interconnected with the paraventricular nucleus and medial preoptic area, send to and receive neural projections from the spinal cord, in which sexual communication between brain and genital apparatus takes place, this review reveals that central NO participates in concert with neurotransmitters/neuropeptides to a neural circuit controlling both the consummatory (penile erection, copulation, lordosis) and appetitive components (sexual motivation, arousal, reward) of sexual behavior.
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16
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The Synthesis and Evaluation of Amidoximes as Cytotoxic Agents on Model Bacterial E. coli Strains. MATERIALS 2021; 14:ma14247577. [PMID: 34947169 PMCID: PMC8708467 DOI: 10.3390/ma14247577] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/03/2021] [Accepted: 12/07/2021] [Indexed: 11/17/2022]
Abstract
The biological research on newly synthesized amidoximes, Boc-protected amidoximes and Boc-derived amidines, obtained by a reduction of the parent amidoximes is reported, herein. Due to the presence of a free amino group in both amidines and amidoximes, these compounds can undergo various chemical reactions such as N-alkylation and N-acylation. One such reaction is Boc-protection, often used in organic synthesis to protect the amino and imino groups. Until now, Boc-protected amidoximes have not been tested for biological activity. Amidoxime derivatives were tested on bacterial E. coli strains. Initial cellular studies tests and digestion with Fpg after the modification of bacterial DNA, suggest that these compounds may have greater potential as antibacterial agents compared to antibiotics such as ciprofloxacin (ci), bleomycin (b) and cloxacillin (cl). The described compounds are highly specific for pathogenic E. coli strains on the basis of the model strains used and may be used in the future as new substitutes for commonly used antibiotics in clinical and hospital infections in the pandemic era.
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17
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Khelissa S, El Fannassi Y, Mechmechani S, Alhuthali S, El Amrani MA, Gharsallaoui A, Barras A, Chihib NE. Water-Soluble Ruthenium (II) Complex Derived From Optically Pure Limonene and Its Microencapsulation Are Efficient Tools Against Bacterial Food Pathogen Biofilms: Escherichia coli, Staphylococcus aureus, Enteroccocus faecalis, and Listeria monocytogenes. Front Microbiol 2021; 12:711326. [PMID: 34867839 PMCID: PMC8640646 DOI: 10.3389/fmicb.2021.711326] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 10/14/2021] [Indexed: 11/13/2022] Open
Abstract
Bioactive aminooxime ligands based on optically pure (R)-limonene have been synthesized in two steps. Their ruthenium (II) cationic water-soluble complex was prepared by a reaction between dichloro (para-cymene) ruthenium (II) dimers and aminooxime ligands in a 1:2 molar ratio. Antibacterial and antibiofilm activities of the synthetized complex were assessed against Escherichia coli, Staphylococcus aureus, Listeria monocytogenes, and Enterococcus faecalis. The results revealed that the ruthenium (II) complex has higher antibacterial and antibiofilm activities in comparison with free ligands or the enantiopure (R)-limonene. Moreover, microencapsulation of this complex reduced its cytotoxicity and improved their minimum inhibitory concentration and antibiofilm activity toward the considered bacteria. The ruthenium (II) complex targets the bacterial cell membrane, which leads to rapid leakage of intracellular potassium. Our study suggests that the developed ruthenium (II) complexes could be useful as an alternative to conventional disinfectants.
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Affiliation(s)
- Simon Khelissa
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France
| | - Yousra El Fannassi
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France.,Université Abdelmalek Essaadi, Faculté des Sciences, Laboratoire de Chimie Organique Appliquée, Tétouan, Morocco
| | - Samah Mechmechani
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France
| | - Sakhr Alhuthali
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France.,Department of Chemical Engineering, Imperial College London, London, United Kingdom
| | - Mohamed Amin El Amrani
- Université Abdelmalek Essaadi, Faculté des Sciences, Laboratoire de Chimie Organique Appliquée, Tétouan, Morocco
| | - Adem Gharsallaoui
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, Villeurbanne, France
| | - Alexandre Barras
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520-IEMN, Lille, France
| | - Nour-Eddine Chihib
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France
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18
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Mazrad ZAI, Schelle B, Nicolazzo JA, Leiske MN, Kempe K. Nitrile-Functionalized Poly(2-oxazoline)s as a Versatile Platform for the Development of Polymer Therapeutics. Biomacromolecules 2021; 22:4618-4632. [PMID: 34647734 DOI: 10.1021/acs.biomac.1c00923] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In recent years, polymers bearing reactive groups have received significant interest for biomedical applications. Numerous functional polymer platforms have been introduced, which allow for the preparation of materials with tailored properties via post-polymerization modifications. However, because of their reactivity, many functional groups are not compatible with the initial polymerization. The nitrile group is a highly interesting and relatively inert functionality that has mainly received attention in radical polymerizations. In this Article, a nitrile-functionalized 2-oxazoline monomer (2-(4-nitrile-butyl)-2-oxazoline, BuNiOx) is introduced, and its compatibility with the cationic ring-opening polymerization is demonstrated. Subsequently, the versatility of nitrile-functionalized poly(2-oxazoline)s (POx) is presented. To this end, diverse (co)polymers are synthesized and characterized by nuclear resonance spectroscopy, size-exclusion chromatography, and mass spectrometry. Amphiphilic block copolymers are shown to efficiently encapsulate the hydrophobic drug curcumin (CUR) in aqueous solution, and the anti-inflammatory effect of the CUR-containing nanostructures is presented in BV-2 microglia. Furthermore, the availability of the BuNiOx repeating units for post-polymerization modifications with hydroxylamine to yield amidoxime (AO)-functionalized POx is demonstrated. These AO-containing POx were successfully applied for the complexation of Fe(III) in a quantitative manner. In addition, AO-functionalized POx were shown to release nitric oxide intracellularly in BV-2 microglia. Thus nitrile-functionalized POx represent a promising and robust platform for the design of polymer therapeutics for a wide range of applications.
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Affiliation(s)
- Zihnil A I Mazrad
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Monash University, Parkville, Victoria 3052, Australia.,Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Baptiste Schelle
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Monash University, Parkville, Victoria 3052, Australia.,Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Joseph A Nicolazzo
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Meike N Leiske
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Monash University, Parkville, Victoria 3052, Australia.,Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Kristian Kempe
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Monash University, Parkville, Victoria 3052, Australia.,Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia.,Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia
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19
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Kalatuwawege IP, Gunaratna MJ, Udukala DN. Synthesis, In Silico Studies, and Evaluation of Syn and Anti Isomers of N-Substituted Indole-3-carbaldehyde Oxime Derivatives as Urease Inhibitors against Helicobacter pylori. Molecules 2021; 26:molecules26216658. [PMID: 34771067 PMCID: PMC8588131 DOI: 10.3390/molecules26216658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/20/2021] [Accepted: 10/28/2021] [Indexed: 12/24/2022] Open
Abstract
Gastrointestinal tract infection caused by Helicobacter pylori is a common virulent disease found worldwide, and the infection rate is much higher in developing countries than in developed ones. In the pathogenesis of H. pylori in the gastrointestinal tract, the secretion of the urease enzyme plays a major role. Therefore, inhibition of urease is a better approach against H. pylori infection. In the present study, a series of syn and anti isomers of N-substituted indole-3-carbaldehyde oxime derivatives was synthesized via Schiff base reaction of appropriate carbaldehyde derivatives with hydroxylamine hydrochloride. The in vitro urease inhibitory activities of those derivatives were evaluated against that of Macrotyloma uniflorum urease using the modified Berthelot reaction. Out of the tested compounds, compound 8 (IC50 = 0.0516 ± 0.0035 mM) and compound 9 (IC50 = 0.0345 ± 0.0008 mM) were identified as the derivatives with potent urease inhibitory activity with compared to thiourea (IC50 = 0.2387 ± 0.0048 mM). Additionally, in silico studies for all oxime compounds were performed to investigate the binding interactions with the active site of the urease enzyme compared to thiourea. Furthermore, the drug-likeness of the synthesized oxime compounds was also predicted.
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Affiliation(s)
- Ishani P. Kalatuwawege
- College of Chemical Sciences, Institute of Chemistry Ceylon, Rajagiriya 10100, Sri Lanka; (I.P.K.); (D.N.U.)
| | - Medha J. Gunaratna
- Department of Chemistry, University of Kelaniya, Kelaniya 10300, Sri Lanka
- Correspondence:
| | - Dinusha N. Udukala
- College of Chemical Sciences, Institute of Chemistry Ceylon, Rajagiriya 10100, Sri Lanka; (I.P.K.); (D.N.U.)
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20
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Popescu V, Buciscanu II, Pruneanu M, Maier SS, Danila A, Maier V, Pîslaru M, Rotaru V, Cristian IN, Popescu A, Istrate B, Blaga AC, Ciolacu F, Cretescu I, Chelariu P, Marin M. Sustainable Functionalization of PAN to Improve Tinctorial Capacity. Polymers (Basel) 2021; 13:3665. [PMID: 34771222 PMCID: PMC8588328 DOI: 10.3390/polym13213665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/13/2021] [Accepted: 10/16/2021] [Indexed: 11/16/2022] Open
Abstract
This study may open a new way to obtain the coloration of a polymer during functionalization. Two polyacrylonitrile (PAN) polymers in the form of textile fibers (Melana and Dralon L) were subjected to functionalization treatments in order to improve the dyeing capacity. The functionalizations determined by an organo-hypervalent iodine reagent developed in situ led to fiber coloration without using dyes. KIO3 was formed in situ from the interaction of aqueous solutions of 3-9% KOH with 3-9% I2, at 120 °C. The yellow-orange coloration appeared as a result of the transformations in the chemical structure of each functionalized polymer, with the formation of iodinehydrin groups. The degree of functionalization directly influenced the obtained color. The results of the Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDX), Map and Temogravimetric Analysis (TG) plus Differential Thermal (DTA) analyses indicated the presence of new functional groups, such as iodine-oxime. The X-ray diffraction (XRD) analysis confirmed the change of the crystalline/amorphous ratio in favor of the former. The new groups introduced by functionalization make it possible to dye with classes of dyes specific to these groups, but not specific to PAN fibers, thus improving their dyeing capacity.
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Affiliation(s)
- Vasilica Popescu
- Department of Chemical Engineering in Textiles and Leather, Faculty of Industrial Design and Business Management, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania; (I.I.B.); (M.P.); (S.S.M.); (A.D.); (V.M.); (V.R.); (P.C.); (M.M.)
| | - Ingrid Ioana Buciscanu
- Department of Chemical Engineering in Textiles and Leather, Faculty of Industrial Design and Business Management, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania; (I.I.B.); (M.P.); (S.S.M.); (A.D.); (V.M.); (V.R.); (P.C.); (M.M.)
| | - Melinda Pruneanu
- Department of Chemical Engineering in Textiles and Leather, Faculty of Industrial Design and Business Management, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania; (I.I.B.); (M.P.); (S.S.M.); (A.D.); (V.M.); (V.R.); (P.C.); (M.M.)
| | - Stelian Sergiu Maier
- Department of Chemical Engineering in Textiles and Leather, Faculty of Industrial Design and Business Management, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania; (I.I.B.); (M.P.); (S.S.M.); (A.D.); (V.M.); (V.R.); (P.C.); (M.M.)
| | - Angela Danila
- Department of Chemical Engineering in Textiles and Leather, Faculty of Industrial Design and Business Management, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania; (I.I.B.); (M.P.); (S.S.M.); (A.D.); (V.M.); (V.R.); (P.C.); (M.M.)
| | - Vasilica Maier
- Department of Chemical Engineering in Textiles and Leather, Faculty of Industrial Design and Business Management, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania; (I.I.B.); (M.P.); (S.S.M.); (A.D.); (V.M.); (V.R.); (P.C.); (M.M.)
| | - Marius Pîslaru
- Department of Engineering and Management, Faculty of Industrial Design and Business Management, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania;
| | - Vlad Rotaru
- Department of Chemical Engineering in Textiles and Leather, Faculty of Industrial Design and Business Management, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania; (I.I.B.); (M.P.); (S.S.M.); (A.D.); (V.M.); (V.R.); (P.C.); (M.M.)
| | - Irina Niculina Cristian
- Design and Engineering of Textile Products, Faculty of Industrial Design and Business Management, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania;
| | - Andrei Popescu
- Department of Machine Design, Mechatronics and Robotics, Faculty of Mechanical Engineering, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania; (A.P.); (B.I.)
| | - Bogdan Istrate
- Department of Machine Design, Mechatronics and Robotics, Faculty of Mechanical Engineering, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania; (A.P.); (B.I.)
| | - Alexandra Cristina Blaga
- Department of Organic, Biochemical and Food Engineering, “Cristofor Simionescu” Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania;
| | - Florin Ciolacu
- Department of Natural and Synthetic Polymers, “Cristofor Simionescu” Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania;
| | - Igor Cretescu
- Department of Environmental Engineering and Management, “Cristofor Simionescu” Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania;
| | - Petronela Chelariu
- Department of Chemical Engineering in Textiles and Leather, Faculty of Industrial Design and Business Management, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania; (I.I.B.); (M.P.); (S.S.M.); (A.D.); (V.M.); (V.R.); (P.C.); (M.M.)
| | - Marina Marin
- Department of Chemical Engineering in Textiles and Leather, Faculty of Industrial Design and Business Management, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania; (I.I.B.); (M.P.); (S.S.M.); (A.D.); (V.M.); (V.R.); (P.C.); (M.M.)
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21
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Vieira YA, Gurgel D, Henriques RO, Machado RAF, de Oliveira D, Oechsler BF, Furigo Junior A. A Perspective Review on the Application of Polyacrylonitrile-Based Supports for Laccase Immobilization. CHEM REC 2021; 22:e202100215. [PMID: 34669242 DOI: 10.1002/tcr.202100215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 10/02/2021] [Indexed: 01/12/2023]
Abstract
The use of laccases applied in bioremediation processes has been increasingly studied, given the urgent need to overcome the environmental problems caused by emerging contaminants. It is known that immobilized enzymes have better operational stability under reaction conditions, allowing for greater applicability. However, given the lack of commercially available immobilized laccases, the search for immobilization materials and methods continues to gain effort. The use of polyacrylonitrile (PAN) to immobilize enzymes has been investigated since it is a low-cost material and can be modified and functionalized to well interact with the enzyme. This polymer can be used with different morphologies such as fibers, beads, and core-shell, presenting as an easily applicable alternative. This review presents the missing link between polymer and enzyme through an overview of PAN's current use as support for laccase immobilization and polymer functionalization methods, considering the importance of immobilized laccases in several industrial sectors.
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Affiliation(s)
- Yago Araujo Vieira
- Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, EQA/UFSC - Postal Code 476, CEP 88040-900, Florianopolis, SC, Brazil
| | - Danyelle Gurgel
- Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, EQA/UFSC - Postal Code 476, CEP 88040-900, Florianopolis, SC, Brazil
| | - Rosana Oliveira Henriques
- Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, EQA/UFSC - Postal Code 476, CEP 88040-900, Florianopolis, SC, Brazil
| | - Ricardo Antonio Francisco Machado
- Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, EQA/UFSC - Postal Code 476, CEP 88040-900, Florianopolis, SC, Brazil
| | - Débora de Oliveira
- Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, EQA/UFSC - Postal Code 476, CEP 88040-900, Florianopolis, SC, Brazil
| | - Bruno Francisco Oechsler
- Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, EQA/UFSC - Postal Code 476, CEP 88040-900, Florianopolis, SC, Brazil
| | - Agenor Furigo Junior
- Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, EQA/UFSC - Postal Code 476, CEP 88040-900, Florianopolis, SC, Brazil
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Abstract
Natural occurrence and anthropogenic practices contribute to the release of pollutants, specifically heavy metals, in water over the years. Therefore, this leads to a demand of proper water treatment to minimize the harmful effects of the toxic heavy metals in water, so that a supply of clean water can be distributed into the environment or household. This review highlights several water treatment methods that can be used in removing heavy metal from water. Among various treatment methods, the adsorption process is considered as one of the highly effective treatments of heavy metals and the functionalization of adsorbents can fully enhance the adsorption process. Therefore, four classes of adsorbent sources are highlighted: polymeric, natural mineral, industrial by-product, and carbon nanomaterial adsorbent. The major purpose of this review is to gather up-to-date information on research and development on various adsorbents in the treatment of heavy metal from water by emphasizing the adsorption capability, effect of pH, isotherm and kinetic model, removal efficiency and the contact of time of every adsorbent.
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Oliveira RJ, Santos CS, Caiana RRA, Farias KJS, Almeida Júnior RF, Machado PRL, Soares‐Paulino AA, Menezes PH, Freitas JCR. Design, Synthesis and Antitumoral Activity of New
O
‐Alkylamidoximes. ChemistrySelect 2021. [DOI: 10.1002/slct.202102128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Romário Jonas Oliveira
- Departamento de Química Universidade Federal de Rural de Pernambuco Av. Dom Manoel de Medeiros, Dois Irmãos, s/n 52171-900 Recife PE Brasil
| | - Cosme Silva Santos
- Departamento de Química Universidade Federal de Rural de Pernambuco Av. Dom Manoel de Medeiros, Dois Irmãos, s/n 52171-900 Recife PE Brasil
| | - Rodrigo Ribeiro Alves Caiana
- Centro de Educação e Saúde Universidade Federal de Campina Grande Sítio Olho D'agua da Bica, s/n 58175-000 Cuité PB Brasil
| | - Kleber Juvenal Silva Farias
- Centro de Educação e Saúde Universidade Federal de Campina Grande Sítio Olho D'agua da Bica, s/n 58175-000 Cuité PB Brasil
| | | | - Paula Renata Lima Machado
- Departamento de Análises Clínicas e Toxicológicas Universidade Federal do Rio Grande do Norte 59012-570 Natal RN Brasil
| | - Antônio Augusto Soares‐Paulino
- Faculdade de Ciências Farmacêuticas Universidade de São Paulo Av. Prof. Lineu Prestes, Butantã, 580 05508-000 São Paulo SP Brasil
| | - Paulo Henrique Menezes
- Departamento de Química Fundamental Universidade Federal de Pernambuco Av. Jornalista Anibal Fernandes, s/n 50670-901 Recife PE Brasil
| | - Juliano Carlo Rufino Freitas
- Departamento de Química Universidade Federal de Rural de Pernambuco Av. Dom Manoel de Medeiros, Dois Irmãos, s/n 52171-900 Recife PE Brasil
- Centro de Educação e Saúde Universidade Federal de Campina Grande Sítio Olho D'agua da Bica, s/n 58175-000 Cuité PB Brasil
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24
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Razafindrainibe F, Voros C, Jagadeesh Y, Reddy NM, Tissier A, Mardy K, Reihanian‐Hadany N, Brown RCD, Baati R. Sonogashira Cross‐Coupling Reaction of Bromocyanofluoro Pyridine Compounds: Access to 5‐ and 6‐Alkynylfluoropyridinamidoximes Scaffolds. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Franck Razafindrainibe
- Ecole de Chimie Polymère et Matériaux ECPM ICPEES UMR CNRS 7515 Université de Strasbourg 25, rue Becquerel 67087 Strasbourg France
| | - Camille Voros
- Ecole de Chimie Polymère et Matériaux ECPM ICPEES UMR CNRS 7515 Université de Strasbourg 25, rue Becquerel 67087 Strasbourg France
| | - Yerri Jagadeesh
- Ecole de Chimie Polymère et Matériaux ECPM ICPEES UMR CNRS 7515 Université de Strasbourg 25, rue Becquerel 67087 Strasbourg France
| | - Nimmakayala Mallikarjuna Reddy
- Ecole de Chimie Polymère et Matériaux ECPM ICPEES UMR CNRS 7515 Université de Strasbourg 25, rue Becquerel 67087 Strasbourg France
| | - Allan Tissier
- Ecole de Chimie Polymère et Matériaux ECPM ICPEES UMR CNRS 7515 Université de Strasbourg 25, rue Becquerel 67087 Strasbourg France
| | - Keven Mardy
- Ecole de Chimie Polymère et Matériaux ECPM ICPEES UMR CNRS 7515 Université de Strasbourg 25, rue Becquerel 67087 Strasbourg France
| | - Norbert Reihanian‐Hadany
- Ecole de Chimie Polymère et Matériaux ECPM ICPEES UMR CNRS 7515 Université de Strasbourg 25, rue Becquerel 67087 Strasbourg France
| | - Richard C. D. Brown
- School of Chemistry University of Southampton Highfield, Southampton SO17 1BJ United Kingdom
| | - Rachid Baati
- Ecole de Chimie Polymère et Matériaux ECPM ICPEES UMR CNRS 7515 Université de Strasbourg 25, rue Becquerel 67087 Strasbourg France
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Schepetkin IA, Plotnikov MB, Khlebnikov AI, Plotnikova TM, Quinn MT. Oximes: Novel Therapeutics with Anticancer and Anti-Inflammatory Potential. Biomolecules 2021; 11:biom11060777. [PMID: 34067242 PMCID: PMC8224626 DOI: 10.3390/biom11060777] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 02/07/2023] Open
Abstract
Oximes have been studied for decades because of their significant roles as acetylcholinesterase reactivators. Over the last twenty years, a large number of oximes have been reported with useful pharmaceutical properties, including compounds with antibacterial, anticancer, anti-arthritis, and anti-stroke activities. Many oximes are kinase inhibitors and have been shown to inhibit over 40 different kinases, including AMP-activated protein kinase (AMPK), phosphatidylinositol 3-kinase (PI3K), cyclin-dependent kinase (CDK), serine/threonine kinases glycogen synthase kinase 3 α/β (GSK-3α/β), Aurora A, B-Raf, Chk1, death-associated protein-kinase-related 2 (DRAK2), phosphorylase kinase (PhK), serum and glucocorticoid-regulated kinase (SGK), Janus tyrosine kinase (JAK), and multiple receptor and non-receptor tyrosine kinases. Some oximes are inhibitors of lipoxygenase 5, human neutrophil elastase, and proteinase 3. The oxime group contains two H-bond acceptors (nitrogen and oxygen atoms) and one H-bond donor (OH group), versus only one H-bond acceptor present in carbonyl groups. This feature, together with the high polarity of oxime groups, may lead to a significantly different mode of interaction with receptor binding sites compared to corresponding carbonyl compounds, despite small changes in the total size and shape of the compound. In addition, oximes can generate nitric oxide. This review is focused on oximes as kinase inhibitors with anticancer and anti-inflammatory activities. Oximes with non-kinase targets or mechanisms of anti-inflammatory activity are also discussed.
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Affiliation(s)
- Igor A. Schepetkin
- Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT 59717, USA;
| | - Mark B. Plotnikov
- Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Center, Russian Academy of Sciences, 634028 Tomsk, Russia;
| | - Andrei I. Khlebnikov
- Kizhner Research Center, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia;
- Scientific Research Institute of Biological Medicine, Altai State University, 656049 Barnaul, Russia
| | - Tatiana M. Plotnikova
- Department of Pharmacology, Siberian State Medical University, 634050 Tomsk, Russia;
| | - Mark T. Quinn
- Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT 59717, USA;
- Correspondence: ; Tel.: +1-406-994-4707; Fax: +1-406-994-4303
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Badsha MAH, Khan M, Wu B, Kumar A, Lo IMC. Role of surface functional groups of hydrogels in metal adsorption: From performance to mechanism. JOURNAL OF HAZARDOUS MATERIALS 2021; 408:124463. [PMID: 33189468 DOI: 10.1016/j.jhazmat.2020.124463] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/10/2020] [Accepted: 10/31/2020] [Indexed: 05/27/2023]
Abstract
Hydrogels have been studied quite intensively in recent decades regarding whether their metal adsorption abilities may be modified or even enhanced via functionalization (i.e., functionalizing the surfaces of hydrogels with specific functional groups). Studies have found that functionalizing hydrogels can in fact give them higher adsorptive power. This enhanced adsorptive performance is articulated in this paper through critically reviewing more than 120 research articles in such terms as the various techniques of synthesizing functionalized hydrogels, the roles that specific functional groups play on adsorption performance, selectivity, reusability, as well as on adsorption mechanism. Moreover, this critical review offers insight into future designs of functionalized hydrogels with specific metal adsorption capabilities.
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Affiliation(s)
- Mohammad A H Badsha
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Musharib Khan
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Baile Wu
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Ashutosh Kumar
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Irene M C Lo
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China; Institute for Advanced Study, The Hong Kong University of Science and Technology, Hong Kong, China.
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27
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Gürkan R. A New Enrichment Method for Quantification of 5-Hydroxymethylfurfural by Indirect Flame Atomic Absorption Spectrometry in Honey and Jam Samples. J AOAC Int 2021; 104:682-692. [DOI: 10.1093/jaoacint/qsaa172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 10/29/2020] [Accepted: 11/30/2020] [Indexed: 12/29/2022]
Abstract
Abstract
Background
Because of increasing amounts of 5-hydroxymethylfurfural (5-HMF) in processed foods and the complexity of the matrix, monitoring of trace 5-HMF requires accurate and reliable methods. Hence, an efficient sample pretreatment procedure is necessary for extraction and preconcentration of 5-HMF from the matrix.
Objective
In this study, a new and efficient sample preparation method utilizing ultrasound-assisted-cloud point extraction (UA-CPE), indirectly followed by flame atomic absorption spectrometry (FAAS), was introduced for the monitoring of trace amounts of 5-HMF in honey and jam samples.
Method
With this method, hydroxylamine was used as a derivatizing agent in the presence of Mn(II) and an anionic surfactant, SDS for extraction of 5-HMF at pH 9.0. For dispersing reagents in sample solution, low amounts of mixed surfactant, triton X-45 and SDS were mixed and fast-injected into the extraction media. A cloudy solution formed, and after reaction of 5-HMF with reagents, the cloudy solution was centrifuged. The extracted 5-HMF in the surfactant-rich phase was dissolved in acidic acetone and indirectly analyzed by FAAS.
Results
The method showed a detection limit of 1.27 μg/L in linear working range of 4–240 μg/L, good precision (2.3–6.5%), and recovery rates (93.5–97%) after preconcentration of 70-fold.
Conclusions
Within this study, an accurate and reliable method for the indirect quantification of 5-HMF in selected samples was successfully developed with a sensitivity improvement factor of 30.6.
Highlights
The figures of merit for the developed indirect method were appropriate. The applicability of the method for the analysis of 5-HMF in processed foods was excellent.
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Affiliation(s)
- Ramazan Gürkan
- Faculty of Sciences, Department of Chemistry, University of Cumhuriyet, TR-58140 Sivas, Turkey
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28
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El-Faham A, Albericio F, Manne SR, de la Torre BG. OxymaPure Coupling Reagents: Beyond Solid-Phase Peptide Synthesis. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1706296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractOxymaPure [ethyl 2-cyano-2-(hydroxyimino)acetate] is an exceptional reagent with which to suppress racemization and enhance coupling efficiency during amide bond formation. The tremendous popularity of OxymaPure has led to the development of several Oxyma-based reagents. OxymaPure and its derived reagents are widely used in solid- and solution-phase peptide chemistry. This review summarizes the recent developments and applications of OxymaPure and Oxyma-based reagents in peptide chemistry, in particular in solution-phase chemistry. Moreover, the side reaction associated with OxymaPure is also discussed.1 Introduction2 Oxyma-Based Coupling Reagents2.1 Aminium/Uronium Salts of OxymaPure2.2 Phosphonium Salts of OxymaPure2.3 Oxyma-Based Phosphates2.4 Sulfonate Esters of OxymaPure2.5 Benzoate Esters of OxymaPure2.6 Carbonates of OxymaPure Derivatives3 OxymaPure Derivatives4 Other Oxime-Based Additives and Coupling Reagents5 Side Reactions Using OxymaPure Derivatives6 Conclusion7 List of Abbreviations
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Affiliation(s)
- Ayman El-Faham
- Department of Chemistry, College of Science, King Saud University
- Department of Chemistry, Faculty of Science, Alexandria University,
| | - Fernando Albericio
- Peptide Science Laboratory, School of Chemistry and Physics, University of KwaZulu-Natal
- Department of Chemistry, College of Science, King Saud University
- Institute for Advanced Chemistry of Catalonia (IQAC-CSIC)
- CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, and Department of Organic Chemistry, University of Barcelona
| | - Srinivasa Rao Manne
- Peptide Science Laboratory, School of Chemistry and Physics, University of KwaZulu-Natal
| | - Beatriz G. de la Torre
- Peptide Science Laboratory, School of Chemistry and Physics, University of KwaZulu-Natal
- KwaZulu-Natal Research Innovation and Sequencing Platform (KRISP), School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal
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29
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He K, Kumar P, Abd-Ellah M, Liu H, Li X, Zhang Z, Wang J, Li Y. Alkyloxime Side Chain Enabled Polythiophene Donors for Efficient Organic Solar Cells. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01548] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Keqiang He
- Department of Chemical Engineering and Waterloo Institute of Nanotechnology (WIN), University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Pankaj Kumar
- Department of Chemical Engineering and Waterloo Institute of Nanotechnology (WIN), University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Marwa Abd-Ellah
- Department of Chemical Engineering and Waterloo Institute of Nanotechnology (WIN), University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Haitao Liu
- Institute of Chemistry, Henan Academy of Sciences, 56 Hongzhuan Road, Jinshui District, Zhengzhou, Henan 450002, China
| | - Xu Li
- Institute of Chemistry, Henan Academy of Sciences, 56 Hongzhuan Road, Jinshui District, Zhengzhou, Henan 450002, China
| | - Zhifang Zhang
- Department of Chemical Engineering and Waterloo Institute of Nanotechnology (WIN), University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Jinliang Wang
- Institute of Chemistry, Henan Academy of Sciences, 56 Hongzhuan Road, Jinshui District, Zhengzhou, Henan 450002, China
| | - Yuning Li
- Department of Chemical Engineering and Waterloo Institute of Nanotechnology (WIN), University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
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Romeo S. MARC1 and HNRNPUL1: Two Novel Players in Alcohol-related Liver Disease. Gastroenterology 2020; 159:1231-1232. [PMID: 32800779 DOI: 10.1053/j.gastro.2020.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 08/10/2020] [Indexed: 12/02/2022]
Affiliation(s)
- Stefano Romeo
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, Wallenberg Laboratory, Gothenburg, Sweden; Department of Cardiology, Sahlgrenska University Hospital, Gothenburg, Sweden; Clinical Nutrition Unit, Department of Medical and Surgical Sciences, University Magna Graecia, Catanzaro, Italy.
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Reactivity of Coordinated 2-Pyridyl Oximes: Synthesis, Structure, Spectroscopic Characterization and Theoretical Studies of Dichlorodi{(2-Pyridyl)Furoxan}Zinc(II) Obtained from the Reaction between Zinc(II) Nitrate and Pyridine-2-Chloroxime. INORGANICS 2020. [DOI: 10.3390/inorganics8090047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This work reports our first results in the area of the reactivity of coordinated chloroximes. The 1:2:2:2 Zn(NO3)2∙6H2O/Eu(NO3)3∙6H2O/ClpaoH/Et3N reaction mixture in MeOH, where ClpaoH is pyridine-2-chloroxime, resulted in complex [ZnCl2(L)] (1); L is the di(2-pyridyl)furoxan [3,4-di(2-pyridyl)-1,2,5-oxadiazole-2-oxide] ligand. The same complex can be isolated in the absence of the lanthanoid. The direct reaction of ZnCl2 and pre-synthesized L in MeOH also provides access to 1. In the tetrahedral complex, L behaves as a Npyridyl,N′pyridyl-bidentate ligand, forming an unusual seven-membered chelating ring. The Hirshfeld Surface analysis of the crystal structure reveals a multitude of intermolecular interactions, which generate an interesting 3D architecture. The complex has been characterized by FTIR and Raman spectroscopies. The structure of 1 is not retained in DMSO (dimethylsulfoxide) solution, as proven by NMR (1H, 13C, 15N) spectroscopy and its molar conductivity value. Upon excitation at 375 nm, solid 1 emits blue light with a maximum at 452 nm; the emission is of an intraligand character. The geometric and energetic profiles of possible pathways involved in the reaction of ClpaoH and Zn(NO3)2∙6H2O in MeOH in the presence of Et3N has been investigated by DFT (Density Functional Theory) computational methodologies at the PBE0/Def2-TZVP(Cr)∪6-31G(d,p)(E)/Polarizable Continuum Model (PCM) level of theory. This study reveals an unprecedented cross-coupling reaction between two coordinated 2-pyridyl nitrile oxide ligands.
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33
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Albayati MR, Mohamed MFA, Moustafa AH. Optimization of the synthesis of het/aryl-amidoximes using an efficient green chemistry. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1735443] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Mustafa R. Albayati
- Department of Chemistry, College of Education, Kirkuk University, Kirkuk, Iraq
| | - Mamdouh F. A. Mohamed
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Sohag University, Sohag, Egypt
| | - Amr H. Moustafa
- Department of Chemistry, Faculty of Science, Sohag University, Sohag, Egypt
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