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Yang L, Tu Y, Li H, Zhan W, Hu H, Wei Y, Chen C, Liu K, Shao P, Li M, Yang G, Luo X. Fluorine-Rich Supramolecular Nano-Container Crosslinked Hydrogel for Lithium Extraction with Super-High Capacity and Extreme Selectivity. Angew Chem Int Ed Engl 2023; 62:e202308702. [PMID: 37471502 DOI: 10.1002/anie.202308702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/19/2023] [Accepted: 07/19/2023] [Indexed: 07/22/2023]
Abstract
Extraction and recovery of lithium from reserves play a critical role in the sustainable development of energy due to the explosive growth of the lithium-battery market. However, the low efficiency of extraction and recovery seriously threatens the sustainability of lithium supply. In this contribution, we fabricate a novel mechanically robust fluorine-rich hydrogel, showing highly efficient Li+ extraction from Li-containing solutions. The hydrogel was facilely fabricated by simple one-pot polymerization of supramolecular nanosheets of fluorinated monomers, acrylic acid and a small amount of chemical crosslinkers. The hydrogel exhibits a remarkable lithium adsorption capacity (Qm Li+ =122.3 mg g-1 ) and can be reused. Moreover, it can exclusively extract lithium ions from multiple co-existing metal ions. Notably, the separation of Li+ /Na+ in actual wastewater is achieved with a surprising separation factor of 153.72. The detailed characterizations as well as calculation showed that the specific coordination of Li-F plays a central role for both of the striking recovery capability and selectivity for Li+ . Furthermore, an artificial device was constructed, displaying high efficiency of extracting lithium in various complex actual lithium-containing wastewater. This work provides a new and promising avenue for the efficient extraction and recovery of lithium resource from complex lithium-containing solutions.
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Affiliation(s)
- Liming Yang
- National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang, 330063, China
| | - Yunyun Tu
- National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang, 330063, China
| | - Hongyu Li
- Biomass Molecular Engineering Center and Anhui Provincial Key Laboratory of Microbial Pest Control, Anhui Agricultural University, Hefei, 230036, China
| | - Wanli Zhan
- Biomass Molecular Engineering Center and Anhui Provincial Key Laboratory of Microbial Pest Control, Anhui Agricultural University, Hefei, 230036, China
| | - Huiqin Hu
- National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang, 330063, China
| | - Yun Wei
- National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang, 330063, China
| | - Changli Chen
- National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang, 330063, China
| | - Ketao Liu
- Biomass Molecular Engineering Center and Anhui Provincial Key Laboratory of Microbial Pest Control, Anhui Agricultural University, Hefei, 230036, China
| | - Penghui Shao
- National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang, 330063, China
| | - Min Li
- Department of Chemical Engineering, Chongqing University of Science and Technology, Chongqing, 401331, China
| | - Guang Yang
- Biomass Molecular Engineering Center and Anhui Provincial Key Laboratory of Microbial Pest Control, Anhui Agricultural University, Hefei, 230036, China
| | - Xubiao Luo
- National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang, 330063, China
- School of Life Science, Jinggangshan University, Ji'an, 343009, China
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102
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Zeger VR, Bell DS, Anderson JL. Understanding the influence of polymeric ionic liquid sorbent coating substituents on cannabinoid and pesticide affinity in solid-phase microextraction. J Chromatogr A 2023; 1706:464222. [PMID: 37523907 DOI: 10.1016/j.chroma.2023.464222] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 07/04/2023] [Accepted: 07/18/2023] [Indexed: 08/02/2023]
Abstract
To understand factors that drive pesticide-cannabinoid selectivity in solid-phase microextraction (SPME), eight new polymeric ionic liquid (PIL) sorbent coatings were designed and compared to four previously reported PIL sorbent coatings for the extraction of pesticides. The four PIL sorbent coatings consisted of either vinylimidazolium or vinylbenzylimidazolium ILs with long alkyl chain substituents (i.e., -C8H17 or -C12H25) and bis[(trifluoromethyl)sulfonyl]imide ([NTf2-]) anions, from which the eight new PIL sorbent coatings were adapted. Modifications to the chemical structure of IL monomers and crosslinkers included incorporation of polymerizable p-styrenesulfonate or 3-sulfopropyl acrylate anions, the addition of aromatic moieties, and/or the addition of polar functional groups (i.e., -OH or -O- groups). A total of ten commonly regulated pesticides and six cannabinoids were examined in this study. The effect of salt on the solubility of pesticides and cannabinoids in aqueous solutions was assessed by determining their extraction efficiencies in the presence of varied methanol content. Differences in their solubilities appear to play a dominant role in enhancing pesticide-cannabinoid selectivity. The selectivity, represented as the ratio of pesticide total peak areas to cannabinoid total peak areas, also exhibited a moderate correlation to the affinity of the sorbent coatings towards both the pesticides and the cannabinoids. A positive correlation was observed for the pesticides and a negative correlation was observed for the cannabinoids, suggesting that selectivity was driven by more than the presence of salt in the samples. The sorbent coatings' affinity towards each class of analytes were examined to determine specific interactions that might influence selectivity. The two main structural modifications increasing pesticide-cannabinoid selectivity included the absence of aromatic moieties and the addition of hydrogen bond donor functional groups. Extractions of simple aromatic molecules as probes were performed under similar extraction conditions as the cannabinoids and confirmed the influence of hydrogen bonding interactions on sorbent coating affinity.
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Affiliation(s)
- Victoria R Zeger
- Department of Chemistry, Iowa State University, Ames, IA 50011, United States
| | - David S Bell
- Restek Corporation, 110 Benner Circle, Bellefonte, Pennsylvania 16823, United States
| | - Jared L Anderson
- Department of Chemistry, Iowa State University, Ames, IA 50011, United States.
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103
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Gondo TF, Jönsson M, Karlsson EN, Sandahl M, Turner C. Extractability, selectivity, and comprehensiveness in supercritical fluid extraction of seaweed using ternary mixtures of carbon dioxide, ethanol, and water. J Chromatogr A 2023; 1706:464267. [PMID: 37572535 DOI: 10.1016/j.chroma.2023.464267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/06/2023] [Accepted: 08/01/2023] [Indexed: 08/14/2023]
Abstract
It is well-known that an ideal extraction method enabling quantitative analysis should give complete extraction of the target analytes as well as minimal co-extraction of unwanted matrix substances. If the extraction method is part of a nontarget screening protocol, the desired analytes can differ widely in terms of chemical properties. In chromatography, terminologies such as recovery, selectivity, and comprehensiveness are well-established and can easily be determined. However, in extraction, these concepts are much less developed. Hence, the aim of our research is to develop and scrutinize theory in extraction with respect to numerical descriptors for extractability, selectivity, and comprehensiveness. Our approach is based on experiments determining the extractability of target analytes and selected interferences. As a case study, we use a pooled sample of three species of seaweed (Alaria esculenta, Laminaria digitata and Ascophyllum nodosum). Target analytes are β-carotene, fucoxanthin, δ-tocopherol, and phloroglucinol; and selected interferences are carbohydrates, proteins, ash, arsenic, and chlorophyll a. As a "green and clean" extraction technique, supercritical fluid extraction (SFE) using mixtures of CO2, ethanol and water were explored using a design of experiment. The temperature was varied between 40-80°C, and the pressure was held constant at 300 bar. Obtained results clearly demonstrate that highest relative selectivity was achieved with CO2 containing only 5 vol% of ethanol and no water, which primarily enabled high extractability of β-carotene, and yielding an extract free of carbohydrates, proteins, and toxic metals such as arsenic. Best methods for highest extractability of the other target analytes varied quite widely. Analytes requiring the highest water content (fucoxanthin and phloroglucinol), also resulted in the lowest relative selectivity. Maximum relative comprehensiveness was achieved using CO2/ethanol/water (40/55/5, v/v/v) at 70°C and 300 bar. Our study demonstrates the feasibility of using relative quantitative descriptors for extractability, selectivity, and comprehensiveness, in optimization strategies for analytical extractions.
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Affiliation(s)
- Thamani Freedom Gondo
- Lund University, Department of Chemistry, Centre for Analysis and Synthesis, P.O. Box 124, SE-22100 Lund, Sweden
| | - Madeleine Jönsson
- Lund University, Department of Chemistry, Division of Biotechnology, P.O. Box 124, SE-22100 Lund, Sweden
| | - Eva Nordberg Karlsson
- Lund University, Department of Chemistry, Division of Biotechnology, P.O. Box 124, SE-22100 Lund, Sweden
| | - Margareta Sandahl
- Lund University, Department of Chemistry, Centre for Analysis and Synthesis, P.O. Box 124, SE-22100 Lund, Sweden
| | - Charlotta Turner
- Lund University, Department of Chemistry, Centre for Analysis and Synthesis, P.O. Box 124, SE-22100 Lund, Sweden.
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104
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Qi D, Xu J, Zhou Y, Zhang H, Shi J, He K, Yuan Y, Luo J, Wang S, Wang Y. Cyclodextrin-supported Co(OH) 2 Clusters as Electrocatalysts for Efficient and Selective H 2 O 2 Synthesis. Angew Chem Int Ed Engl 2023; 62:e202307355. [PMID: 37405901 DOI: 10.1002/anie.202307355] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/04/2023] [Accepted: 07/05/2023] [Indexed: 07/07/2023]
Abstract
Co-based material catalysts have shown attractive application prospects in the 2 e- oxygen reduction reaction (ORR). However, for the industrial synthesis of H2 O2 , there is still lack of Co-based catalysts with high production yield rate. Here, novel cyclodextrin-supported Co(OH)2 cluster catalysts were prepared via a mild and facile method. The catalyst exhibited remarkable H2 O2 selectivity (94.2 % ~ 98.2 %), good stability (99 % activity retention after 35 h), and ultra-high H2 O2 production yield rate (5.58 mol gcatalyst -1 h-1 in the H-type electrolytic cell), demonstrating its promising industrial application potential. Density functional theory (DFT) reveals that the cyclodextrin-mediated Co(OH)2 electronic structure optimizes the adsorption of OOH* intermediates and significantly enhances the activation energy barrier for dissociation, leading to the high reactivity and selectivity for the 2 e- ORR. This work offers a valuable and practical strategy to design Co-based electrocatalysts for H2 O2 production.
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Affiliation(s)
- Defeng Qi
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Jie Xu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China
| | - Yitong Zhou
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, China
| | - Hao Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, China
| | - Jianqiao Shi
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China
| | - Kun He
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China
| | - Yifei Yuan
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China
| | - Jun Luo
- ShenSi Lab, Shenzhen Institute for Advanced Study, University of Electronic Science and Technology of China, Longhua District, Shenzhen, 518110, China
| | - Shun Wang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China
| | - Yong Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, P. R. China
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105
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Bueschbell B, Magalhães PR, Barreto CA, Melo R, Schiedel AC, Machuqueiro M, Moreira IS. The World of GPCR dimers - Mapping dopamine receptor D 2 homodimers in different activation states and configuration arrangements. Comput Struct Biotechnol J 2023; 21:4336-4353. [PMID: 37711187 PMCID: PMC10497915 DOI: 10.1016/j.csbj.2023.08.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 08/29/2023] [Accepted: 08/29/2023] [Indexed: 09/16/2023] Open
Abstract
G protein-coupled receptors (GPCRs) are known to dimerize, but the molecular and structural basis of GPCR dimers is not well understood. In this study, we developed a computational framework to generate models of symmetric and asymmetric GPCR dimers using different monomer activation states and identified their most likely interfaces with molecular details. We chose the dopamine receptor D2 (D2R) homodimer as a case study because of its biological relevance and the availability of structural information. Our results showed that transmembrane domains 4 and 5 (TM4 and TM5) are mostly found at the dimer interface of the D2R dimer and that these interfaces have a subset of key residues that are mostly nonpolar from TM4 and TM5, which was in line with experimental studies. In addition, TM2 and TM3 appear to be relevant for D2R dimers. In some cases, the inactive configuration is unaffected by the partnered protomer, whereas in others, the active protomer adopts the properties of an inactive receptor. Additionally, the β-arrestin configuration displayed the properties of an active receptor in the absence of an agonist, suggesting that a switch to another meta-state during dimerization occurred. Our findings are consistent with the experimental data, and this method can be adapted to study heterodimers and potentially extended to include additional proteins such as G proteins or β-arrestins. In summary, this approach provides insight into the impact of the conformational status of partnered protomers on the overall quaternary GPCR macromolecular structure and dynamics.
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Affiliation(s)
- Beatriz Bueschbell
- CIBB - Center for Innovative Biomedicine and Biotechnology, University of Coimbra, 3000-456 Coimbra, Portugal
- IIIs-Institute for Interdisciplinary Research, University of Coimbra, 3000-456 Coimbra, Portugal
| | - Pedro R. Magalhães
- BioISI - Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisboa, Campo Grande C8 bdg, 1749-016 Lisboa, Portugal
| | - Carlos A.V. Barreto
- CIBB - Center for Innovative Biomedicine and Biotechnology, University of Coimbra, 3000-456 Coimbra, Portugal
- IIIs-Institute for Interdisciplinary Research, University of Coimbra, 3000-456 Coimbra, Portugal
| | - Rita Melo
- CIBB - Center for Innovative Biomedicine and Biotechnology, University of Coimbra, 3000-456 Coimbra, Portugal
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, University of Coimbra, Coimbra, Portugal
| | - Anke C. Schiedel
- Department of Pharmaceutical & Medicinal Chemistry, Pharmaceutical Institute, University of Bonn, D-53121 Bonn, Germany
| | - Miguel Machuqueiro
- BioISI - Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisboa, Campo Grande C8 bdg, 1749-016 Lisboa, Portugal
| | - Irina S. Moreira
- Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
- CNC-Center for Neuroscience and Cell Biology, CIBB-Center for Innovative Biomedicine and Biotechnology, University of Coimbra, 3004-535 Coimbra, Portugal
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106
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Mahmoud AM, Mahnashi MH, El-Wekil MM. Ratiometric sensing interface for glutathione determination based on electro-polymerized copper-coordinated molecularly imprinted layer supported on silver/porous carbon hybrid. Anal Chim Acta 2023; 1272:341498. [PMID: 37355332 DOI: 10.1016/j.aca.2023.341498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 06/02/2023] [Accepted: 06/06/2023] [Indexed: 06/26/2023]
Abstract
A novel molecularly imprinted ratiometric-based sensor was designed for highly selective and ultrasensitive electrochemical detection of glutathione (GSH). The sensor consists of porous carbon co-doped with nitrogen and sulfur formed on the surface of graphite electrode (N, S@PC/GE). Silver nanoparticles (Ag) were grown on the surface of N, S@PC/GE to improve the conductivity/surface area of the sensor and represent an internal reference signal for ratiometric response. The monomer (pyrrole-4-carboxylic acid, Py-COOH) was electro-polymerized on the surface of Ag/N, S@PC/GE in the presence of Cu (II) to form Cu-MIP@Ag/N, S@PC/GE. Addition of GSH decreased the signal of Ag at 0.18 V (oxidation of Ag) due to coordination complexation, while the signal response at 0.83 V (oxidation of Ag-GSH complex) was increased. Under optimum conditions, the ratio response (IGSH/IAg) was increased with increasing the concentration of GSH in the range of 0.01-500 nM with a detection limit (S/N = 3) of 0.003 nM. The electrochemical sensor exhibits many advantages including low LOD, high selectivity, good reproducibility, and satisfactory stability. The sensor was successfully applied to determine GSH in dietary supplements and human serum samples with recoveries % ranged from 97.4 to 101.8% and relative standard deviation % (RSD %) did not exceed 3.8%. This research paper introduces new information for the construction of molecular imprinted ratiometric-based electrochemical sensors for highly selective and sensitive detection of (bio) molecules.
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Affiliation(s)
- Ashraf M Mahmoud
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Mater H Mahnashi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Mohamed M El-Wekil
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt.
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107
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Sugiyama H, Yoshida M, Nagao H, Sawa M, Kinoshita T. Low entropic cost of binding confers high selectivity on an allosteric ERK2 inhibitor. Bioorg Med Chem Lett 2023; 93:129431. [PMID: 37544371 DOI: 10.1016/j.bmcl.2023.129431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/31/2023] [Accepted: 07/31/2023] [Indexed: 08/08/2023]
Abstract
Extracellular signal-regulated kinase 2 (ERK2), a mitogen-activated protein kinase (MAPK), plays an essential role in physiological cellular processes and is a drug target for treating cancers and type 2 diabetes. A previous in silico screening study focusing on an allosteric site that plays a crucial role in substrate anchoring conferred an ERK2 inhibitor (compound 1). In this report, compound 1 was found to show high selectivity toward ERK2 compared with the nearest off-target p38α MAPK, and the crystal structure revealed that compound 1 binds to the allosteric site of ERK2. Fragment molecular orbital calculations based upon this crystal structure provided the structural basis to improve potency of compound 1 derivatives. Further computational studies uncovered that the low entropic cost of binding conferred the high selectivity of compound 1 toward ERK2 over p38α MAPK. These findings demonstrate the feasibility of developing potent and selective ERK2 inhibitors.
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Affiliation(s)
- Hajime Sugiyama
- Mitsubishi Chemical Corporation, 1000 Kamoshida-cho, Aoba-ku, Yokohama, Kanagawa 227-8502, Japan
| | - Mayu Yoshida
- Graduate School of Science, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Haruna Nagao
- Carna Biosciences, Inc., 1-5-5 Minatojima-Minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Masaaki Sawa
- Carna Biosciences, Inc., 1-5-5 Minatojima-Minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Takayoshi Kinoshita
- Graduate School of Science, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.
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108
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Rendošová M, Gyepes R, Kello M, Vilková M, Mudroňová D, Olejníková P, Cardiano P, Gama S, Milea D, Vargová Z. Silver(I) pyrrole- and furan-2-carboxylate complexes - From their design and characterization to antimicrobial, anticancer activity, lipophilicity and SAR. J Inorg Biochem 2023; 246:112266. [PMID: 37271621 DOI: 10.1016/j.jinorgbio.2023.112266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/16/2023] [Accepted: 05/23/2023] [Indexed: 06/06/2023]
Abstract
Two silver(I) complexes with biologically relevant heterocyclic ligands, pyrrole and furan-2- carboxylic acid, were synthesized and their composition was confirmed using elemental, spectral, thermal and structural analyses. The {[Ag(Py2c)]}n (AgPy2c, Py2c = pyrrole-2-carboxylate) and {[Ag(Fu2c)]}n (AgFu2c, Fu2c = furan-2-carboxylate) solubility and stability in biological test stock solution were confirmed by 1H NMR spectroscopy. The X-ray analysis has enabled us to determine typical argentophilic interactions and bridging carboxylate coordination mode of both ligands. Potentiometric data analysis by BSTAC program resulted in the determination of the stability constant of only one species, i.e., the ML (M = Ag+, L = Fu2c-), log βML = 0.59 ± 0.04. Antimicrobial and anticancer tests were performed against selected microorganisms and cell lines with new silver(I) complexes and compared with AgSD (silver(I) sulfadiazine) and cisplatin. From their microbial toxicity point of view, selectivity was determined against lactobacilli (AgPy2c is 8× more effective against S. aureus and E. coli and AgFu2c is 8× more effective against E. coli and 4× against S. aureus). AgFu2c significant anticancer activity was determined against Jurkat cell lines (IC50 = 8.00 μM) and was similar to cisPt (IC50 = 6.3 μM) similarly to its selectivity (SI (AgFu2c) = 7.3, SI (cisPt) = 6.4, SI = selectivity index). In addition, cell cycle arrest was observed already in the Sub-G0 phase during a flow cytometry experiment. To evaluate the AgPy2c and AgFu2c bioavailability we also discuss their Lipinski's Rule of Five.
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Affiliation(s)
- Michaela Rendošová
- Institute of Chemistry, Pavol Jozef Šafarik University, Moyzesova 11, 041 54 Košice, Slovakia
| | - Róbert Gyepes
- Institute of Chemistry, Charles University, Hlavova 2030, 128 00 Praha, Czechia
| | - Martin Kello
- Department of Pharmacology, Faculty of Medicine, Pavol Jozef Šafárik University, Trieda SNP 1, 040 11 Košice, Slovakia
| | - Mária Vilková
- Institute of Chemistry, Pavol Jozef Šafarik University, Moyzesova 11, 041 54 Košice, Slovakia
| | - Dagmar Mudroňová
- Department of Microbiology and Immunology, University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81 Košice, Slovakia
| | - Petra Olejníková
- Department of Biochemistry and Microbiology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia
| | - Paola Cardiano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, CHIBIOFARAM, Università degli Studi di Messina, V.le F. Stagno d'Alcontres, 31, 98166 Messina, Italy
| | - Sofia Gama
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 1397), 2695-066 Bobadela LRS, Portugal
| | - Demetrio Milea
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, CHIBIOFARAM, Università degli Studi di Messina, V.le F. Stagno d'Alcontres, 31, 98166 Messina, Italy
| | - Zuzana Vargová
- Institute of Chemistry, Pavol Jozef Šafarik University, Moyzesova 11, 041 54 Košice, Slovakia.
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109
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Lei H, Duan W, Zhang SQ, Feng Y, Ma M, Yuan B, Xin M. Discovery of potent and selective PI3Kδ inhibitors bearing amino acid fragments. Bioorg Chem 2023; 138:106594. [PMID: 37186998 DOI: 10.1016/j.bioorg.2023.106594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 04/18/2023] [Accepted: 05/03/2023] [Indexed: 05/17/2023]
Abstract
The selective inhibition of PI3Kδ is a potential therapeutic strategy for the treatment of hematologic malignancies. Herein, we report a series of compounds bearing amino acid fragments as potent and selective PI3Kδ inhibitors. Among them, compound A10 exhibited sub-nanomolar PI3Kδ potency. In cellular assays, A10 achieved strong antiproliferation against SU-DHL-6 cells, and caused cell cycle arrest, and induced apoptosis in SU-DHL-6 cells. The docking study showed that A10 tightly bound to PI3Kδ protein with a planar-shaped conformation. Collectively, compound A10 represented a promising potent and selective PI3Kδ inhibitor bearing amino acid fragement albeit with moderate selectivity over PI3Kγ but superior selectivity against PI3Kα and β. This study suggested that using the amino acid fragments instead of the pyrrolidine ring is new strategy for design of potent PI3Kδ inhibitors.
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Affiliation(s)
- Hao Lei
- Department of Medicinal Chemistry, School of Pharmacy, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China
| | - Weiming Duan
- Department of Medicinal Chemistry, School of Pharmacy, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China
| | - San-Qi Zhang
- Department of Medicinal Chemistry, School of Pharmacy, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China
| | - Yifan Feng
- Department of Medicinal Chemistry, School of Pharmacy, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China
| | - Mengyan Ma
- Department of Medicinal Chemistry, School of Pharmacy, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China
| | - Bo Yuan
- Department of Medicinal Chemistry, School of Pharmacy, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China
| | - Minhang Xin
- Department of Medicinal Chemistry, School of Pharmacy, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
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110
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Kempen T, Dahlseid T, Lauer T, Florea AC, Aase I, Cole-Dai N, Kaur S, Southworth C, Grube K, Bhandari J, Sylvester M, Schimek R, Pirok B, Rutan S, Stoll D. Characterization of a high throughput approach for large scale retention measurement in liquid chromatography. J Chromatogr A 2023; 1705:464182. [PMID: 37442072 DOI: 10.1016/j.chroma.2023.464182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 06/22/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023]
Abstract
Many contemporary challenges in liquid chromatography-such as the need for "smarter" method development tools, and deeper understanding of chromatographic phenomena-could be addressed more efficiently and effectively with larger volumes of experimental retention data than are available. The paucity of publicly accessible, high-quality measurements needed for the development of retention models and simulation tools has largely been due to the high cost in time and resources associated with traditional retention measurement approaches. Recently we described an approach to improve the throughput of such measurements by using very short columns (typically 5 mm), while maintaining measurement accuracy. In this paper we present a perspective on the characteristics of a dataset containing about 13,000 retention measurements obtained using this approach, and describe a different sample introduction method that is better suited to this application than the approach we used in prior work. The dataset comprises results for 35 different small molecules, nine different stationary phases, and several mobile phase compositions for each analyte/phase combination. During the acquisition of these data, we have interspersed repeated measurements of a small number of compounds for quality control purposes. The data from these measurements not only enable detection of outliers but also assessment of the repeatability and reproducibility of retention measurements over time. For retention factors greater than 1, the mean relative standard deviation (RSD) of replicate (typically n=5) measurements is 0.4%, and the standard deviation of RSDs is 0.4%. Most differences between selectivity values measured six months apart for 15 non-ionogenic compounds were in the range of +/- 1%, indicating good reproducibility. A critically important observation from these analyses is that selectivity defined as retention of a given analyte relative to the retention of a reference compound (kx/kref) is a much more consistent measure of retention over a time span of months compared to the retention factor alone. While this work and dataset also highlight the importance of stationary phase stability over time for achieving reliable retention measurements, we are nevertheless optimistic that this approach will enable the compilation of large databases (>> 10,000 measurements) of retention values over long time periods (years), which can in turn be leveraged to address some of the most important contemporary challenges in liquid chromatography. All the data discussed in the manuscript are provided as Supplemental Information.
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Affiliation(s)
- Trevor Kempen
- Gustavus Adolphus College, 800 W College Ave, St. Peter, MN 56082, USA
| | - Tina Dahlseid
- Gustavus Adolphus College, 800 W College Ave, St. Peter, MN 56082, USA
| | - Thomas Lauer
- Gustavus Adolphus College, 800 W College Ave, St. Peter, MN 56082, USA
| | | | - Isabella Aase
- Gustavus Adolphus College, 800 W College Ave, St. Peter, MN 56082, USA
| | - Nathan Cole-Dai
- Gustavus Adolphus College, 800 W College Ave, St. Peter, MN 56082, USA
| | - Simerjit Kaur
- Gustavus Adolphus College, 800 W College Ave, St. Peter, MN 56082, USA
| | | | - Kathleen Grube
- Gustavus Adolphus College, 800 W College Ave, St. Peter, MN 56082, USA
| | - Jos Bhandari
- Gustavus Adolphus College, 800 W College Ave, St. Peter, MN 56082, USA
| | - Maria Sylvester
- Gustavus Adolphus College, 800 W College Ave, St. Peter, MN 56082, USA
| | - Ryan Schimek
- Gustavus Adolphus College, 800 W College Ave, St. Peter, MN 56082, USA
| | - Bob Pirok
- Van 't Hoff Institute for Molecular Sciences, Analytical-Chemistry Group, University of Amsterdam, Science Park 904, Amsterdam 1098 XH, the Netherlands
| | - Sarah Rutan
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA 23284-2006, USA
| | - Dwight Stoll
- Gustavus Adolphus College, 800 W College Ave, St. Peter, MN 56082, USA.
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111
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Xu YC, Li N, Yan X, Zou HX. DFT-based analysis of siderophore-metal ion interaction for efficient heavy metal remediation. Environ Sci Pollut Res Int 2023; 30:91780-91793. [PMID: 37479932 DOI: 10.1007/s11356-023-28854-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 07/14/2023] [Indexed: 07/23/2023]
Abstract
Siderophores have great application potential in metal pollutant remediation because of their effective cost and friendly impact on the environment. However, the practical use of siderophores in the remediation of specific metals is rather limited because of the weak nonspecific interactions between the siderophores and different metals. Thus, screening for a siderophore with optimal interaction with a specific metal would be necessary. In this study, the interaction between metal ions and moieties that donate the oxygen ligands for the coordination of four types of siderophore (hydroxamates, catecholates, phenolates, and carboxylates) was modeled and analyzed. As revealed by DFT-based analysis, the four types of siderophore generally exhibited selection preference for different metal ions in the order Ga3+ > Al3+ > Fe3+ > Cr3+ > Ni2+ > Cu2+ > Zn2+ > Co2+ > Mn2+ > Hg2+ > Pb2+ > Cd2+, which was determined mainly by the electronegativity of the siderophore functional groups, the electronegativity of the metals, and the ionic radius of the metals, as well as the interaction between the siderophores and the metals. Moreover, the effect of linear or nonlinear (cyclic) structure on the affinity of each siderophore for different metal ions was evaluated. In most situations, metal-bound cyclic siderophores were found to be more stable than their linear counterparts. Thus, proper siderophores for the remediation of metal pollution may be rapidly screened using this model.
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Affiliation(s)
- Yi-Cheng Xu
- National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Zhong-Xin Street, Wenzhou, 325035, China
| | - Nan Li
- National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Zhong-Xin Street, Wenzhou, 325035, China
| | - Xiufeng Yan
- National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Zhong-Xin Street, Wenzhou, 325035, China
| | - Hui-Xi Zou
- National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Zhong-Xin Street, Wenzhou, 325035, China.
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112
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Khan MI, Ashfaq M, Majid A, Noor L, Alarfaji SS. Adsorption of industry affiliated gases on buckled aluminene for gas sensing applications. J Mol Model 2023; 29:267. [PMID: 37526756 DOI: 10.1007/s00894-023-05674-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 07/20/2023] [Indexed: 08/02/2023]
Abstract
INTRODUCTION First-principles calculations were used to study the adsorption behavior of environmentally significant gases CO, CO2, NO, NO2, SO, and SO2 on pure buckled aluminene (b-Al) for gas sensing applications. Therefore, structural, electronic, and adsorption properties including adsorption energy values and recovery time have been calculated and discussed. METHODS All the structures were optimized using Amsterdam Density Functional (ADF) code BAND. In addition, triple zeta polarization basis with slater-type orbitals were utilized. RESULTS For every gas analyzed, we observed favorable adsorption energy values and charge transfer occurring between the gas molecule and b-Al. In the valance band, there was a strong hybridization between the p orbitals of gas and b-Al, this led to enhanced conductivity in the density of states (DOS). The recovery time suggested that the adsorption of NO, NO2, SO, and SO2 gases on b-Al is good for the application of reversible gas sensors. The recovery time indicated that the b-Al material is very sensitive to NO, NO2, SO, and SO2 gas molecules. CONCLUSION The conclusion in light of all these results is that b-Al based materials can appear as a probable candidate for high gas sensing performance.
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Affiliation(s)
- Muhammad Isa Khan
- Institute of Physics, Baghdad ul Jadeed Campus, The Islamia University of Bahawalpur, Bahawalpur, Pakistan.
- Department of Physics, Rahim Yar Khan Campus, The Islamia University of Bahawalpur, Bahawalpur, Pakistan.
| | - Momina Ashfaq
- Department of Physics, University of Gujrat, Gujrat, 50700, Pakistan
| | - Abdul Majid
- Department of Physics, University of Gujrat, Gujrat, 50700, Pakistan
| | - Laraib Noor
- Faculty of Allied health sciences Ripah University Lahore, Lahore, Pakistan
| | - Saleh S Alarfaji
- Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia
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113
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Fu Q. Motion perception based on ON/OFF channels: A survey. Neural Netw 2023; 165:1-18. [PMID: 37263088 DOI: 10.1016/j.neunet.2023.05.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 04/02/2023] [Accepted: 05/17/2023] [Indexed: 06/03/2023]
Abstract
Motion perception is an essential ability for animals and artificially intelligent systems interacting effectively, safely with surrounding objects and environments. Biological visual systems, that have naturally evolved over hundreds-million years, are quite efficient and robust for motion perception, whereas artificial vision systems are far from such capability. This paper argues that the gap can be significantly reduced by formulation of ON/OFF channels in motion perception models encoding luminance increment (ON) and decrement (OFF) responses within receptive field, separately. Such signal-bifurcating structure has been found in neural systems of many animal species articulating early motion is split and processed in segregated pathways. However, the corresponding biological substrates, and the necessity for artificial vision systems have never been elucidated together, leaving concerns on uniqueness and advantages of ON/OFF channels upon building dynamic vision systems to address real world challenges. This paper highlights the importance of ON/OFF channels in motion perception through surveying current progress covering both neuroscience and computationally modelling works with applications. Compared to related literature, this paper for the first time provides insights into implementation of different selectivity to directional motion of looming, translating, and small-sized target movement based on ON/OFF channels in keeping with soundness and robustness of biological principles. Existing challenges and future trends of such bio-plausible computational structure for visual perception in connection with hotspots of machine learning, advanced vision sensors like event-driven camera finally are discussed.
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Affiliation(s)
- Qinbing Fu
- Machine Life and Intelligence Research Centre, School of Mathematics and Information Science, Guangzhou University, Guangzhou, 510006, China.
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114
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Ding M, Shen Q, Lu W, Zhu S. Synthesis, and biological evaluation of EGFR/HER2-NAMPT conjugates for tumor treatment. Mol Divers 2023:10.1007/s11030-023-10701-y. [PMID: 37481750 DOI: 10.1007/s11030-023-10701-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 07/10/2023] [Indexed: 07/25/2023]
Abstract
Throughout the reported applications of EGFR inhibitors, it is usually employed with HDAC or other targets to design multi-target inhibitors for cancer treatment. In this paper, we designed a drug conjugate that targeted EGFR&HER2 and had inhibitory activity of NAMPT simultaneously. Compound 20c significantly inhibited the EGFR&HER2 and NAMPT enzyme activities, and had comparable or even higher anti-proliferative activity than lapatinib in various cancer cells with over-expressed EGFR and HER2. Importantly, 20c was expected to increase sensitivity to EGFR inhibitor-resistant cells. In Osimertinib-resistant cells (NCI-1975 cells with the L858R/T790M/C797S triple mutation and Ba/F3 cells with the Del19/T790M/C797S triple mutation), the anti-proliferative activity of compound 20c was increased by more than twofold compared with Osimertinib, so as to obtain better curative effect. This strategy is a promising method of embedding multiple pharmacophores into a single molecule, which lays a good foundation for the design and synthesis of small molecule drug conjugates with strong targeting ability and high cytotoxicity.
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Affiliation(s)
- Mengyuan Ding
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, People's Republic of China
| | - Qianqian Shen
- Division of Anti-Tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, People's Republic of China
| | - Wei Lu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, People's Republic of China.
| | - Shulei Zhu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, People's Republic of China.
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115
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Siemak J, Michalkiewicz B. Enhancement of CO 2 adsorption on activated carbons produced from avocado seeds by combined solvothermal carbonization and thermal KOH activation. Environ Sci Pollut Res Int 2023:10.1007/s11356-023-28638-y. [PMID: 37442926 DOI: 10.1007/s11356-023-28638-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 07/02/2023] [Indexed: 07/15/2023]
Abstract
A new strategy for ultramicroporous activated carbons production from avocado seeds was developed. Combined solvothermal carbonization and thermal KOH activation were conducted. Solvothermal carbonizations were performed in a stainless-steel autoclave lined with Teflon at the temperature of 180 °C for 12 h in three different liquids (water, methanol, isopropyl alcohol). Chars were activated by KOH. The carbonization combined with activation took place in the oven at 850 °C for 1 h. All the samples were very good CO2 sorbents. The highest CO2 adsorption at a pressure of 1 bar was achieved for activated carbon produced using isopropanol. The best carbon dioxide adsorption was equal to 6.47 mmol/g at 0 °C and 4.35 mmol/g at 20 °C.
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Affiliation(s)
- Joanna Siemak
- Faculty of Chemical Technology and Engineering, Department of Catalytic and Sorbent Materials Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065, Szczecin, Poland
| | - Beata Michalkiewicz
- Faculty of Chemical Technology and Engineering, Department of Catalytic and Sorbent Materials Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065, Szczecin, Poland.
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116
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Ren Y, Cui M, Zhou Y, Lee Y, Ma J, Han Z, Khim J. Zero-valent iron based materials selection for permeable reactive barrier using machine learning. J Hazard Mater 2023; 453:131349. [PMID: 37084511 DOI: 10.1016/j.jhazmat.2023.131349] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 03/10/2023] [Accepted: 04/01/2023] [Indexed: 05/03/2023]
Abstract
The zero-valent iron (ZVI) based reactive materials are potential remediation reagents in permeable reactive barriers (PRB). Considering that reactive materials is the essential to determining the long-term stability of PRB and the emergence of a large number of new iron-based materials. Here, we present a new approach using machine learning to screen PRB reactive materials, which proposes to improve the efficiency and practicality of selection of ZVI-based materials. To compensate for the insufficient amount of existing machine learning source data and the real-world implementation, machine learning combines evaluation index (EI) and reactive material experimental evaluations. XGboost model is applied to estimate the kinetic data and SHAP is used to improve the accuracy of model. Batch and column tests were conducted to investigate the geochemical characteristics of groundwater. The study find that specific surface area is a fundamental factor correlated with the kinetic constants of ZVI-based materials, according to SHAP analysis. Reclassifying the data with specific surface area significantly improved prediction accuracy (reducing RMSE from 1.84 to 0.6). Experimental evaluation results showed that ZVI had 3.2 times higher anaerobic corrosion reaction kinetic constants and 3.8 times lower selectivity than AC-ZVI. Mechanistic studies revealed the transformation pathways and endpoint products of iron compounds. Overall, this study is a successful initial attempt to use machine learning for selecting reactive materials.
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Affiliation(s)
- Yangmin Ren
- School of Civil, Environmental, and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Mingcan Cui
- School of Civil, Environmental, and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Yongyue Zhou
- School of Civil, Environmental, and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Yonghyeon Lee
- School of Civil, Environmental, and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Junjun Ma
- Nanjing Green-water Environment Engineering Limited by Share Ltd, C Building No. 606 Ningliu Road, Chemical Industrial Park, Nanjing, China
| | - Zhengchang Han
- Nanjing Green-water Environment Engineering Limited by Share Ltd, C Building No. 606 Ningliu Road, Chemical Industrial Park, Nanjing, China
| | - Jeehyeong Khim
- School of Civil, Environmental, and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea.
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117
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Ali R, El-Wekil MM. A dual-recognition-controlled electrochemical biosensor for selective and ultrasensitive detection of acrylamide in heat-treated carbohydrate-rich food. Food Chem 2023; 413:135666. [PMID: 36796261 DOI: 10.1016/j.foodchem.2023.135666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023]
Abstract
A synergistic hybrid was fabricated for the electrochemical aptasensing of acrylamide (AAM) via molecularly imprinted technology. The aptasensor depends on the modification of glassy carbon electrode with AuNPs and reduced graphene oxide (rGO)/multiwalled carbon nanotubes (MWCNTs) {Au@rGO-MWCNTs/GCE}. The aptamer (Apt-SH) and AAM (template) were incubated with the electrode. After that, the monomer was electro-polymerized to fabricate molecular imprinted polymeric film (MIP) over the surface of Apt-SH/Au@rGO/MWCNTs/GCE. The modified electrodes were characterized using different morphological and electrochemical techniques. Under optimum conditions, the aptasensor exhibited a linear relationship between AAM concentration and anodic peak current difference (ΔIpa) in the range of 1-600 nM with a limit of quantitation (LOQ, S/N = 10) and a limit of detection (LOD, S/N = 3) of 0.346 and 0.104 nM, respectively. The aptasensor was successfully applied for the determination of AAM in potato fries samples with recoveries % in the range of 98.7-103.4 % and RSDs did not exceed 3.2 %. The advantages of MIP/Apt-SH/Au@rGO/MWCNTs/GCE are low detection limit, high selectivity, and satisfactory stability towards AAM detection.
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118
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Jiang X, Tang L, Dong L, Sheng X, Zhang W, Liu Z, Shen J, Jiang H, Li C. Cu Single-Atom Catalysts for High- Selectivity Electrocatalytic Acetylene Semihydrogenation. Angew Chem Int Ed Engl 2023:e202307848. [PMID: 37378584 DOI: 10.1002/anie.202307848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 06/25/2023] [Accepted: 06/28/2023] [Indexed: 06/29/2023]
Abstract
The site isolation strategy has been employed in thermal catalytic acetylene semihydrogenation to inhibit overhydrogenation and C-C coupling. However, there is a dearth of analogous investigations in electrocatalytic systems. In this work, density functional theory (DFT) simulations demonstrate that isolated Cu metal sites have higher energy barriers on overhydrogenation and C-C coupling. Following this result, we develop Cu single-atom catalysts highly dispersed on nitrogen-doped carbon matrix, which exhibit high ethylene selectivity (>80% Faradaic efficiency for ethylene, <1% Faradaic efficiency for C4, and no ethane) at high concentrations of acetylene. The superior performance observed in the electrocatalytic selective hydrogenation of acetylene can be attributed to the weak adsorption of ethylene intermediates and highly energy barriers on C-C coupling at isolated sites, as confirmed by both DFT calculations and experimental results. This study provides a comprehensive understanding of the isolated sites inhibiting the side reactions of electrocatalytic acetylene semihydrogenation.
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Affiliation(s)
- Xiaoli Jiang
- East China University of Science and Technology, School of Chemical Engineering, CHINA
| | - Lei Tang
- East China University of Science and Technology, School of Chemical Engineering, CHINA
| | - Lei Dong
- East China University of Science and Technology, School of Chemical Engineering, CHINA
| | - Xuedi Sheng
- East China University of Science and Technology, School of Chemical Engineering, CHINA
| | - Wenfei Zhang
- East China University of Science and Technology, School of Chemical Engineering, CHINA
| | - Zhen Liu
- East China University of Science and Technology, School of Chemical Engineering, CHINA
| | - Jianhua Shen
- East China University of Science and Technology, School of Materials Science and Engineering, CHINA
| | - Hongliang Jiang
- East China University of Science and Technology, School of Chemical Engineering, CHINA
| | - Chunzhong Li
- East China University of Science and Technology, School of Materials Science and Engineering, P. O. Box 258, 130 Meilong Rd., 200237, Shanghai, CHINA
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Peng X, Zhou C, Li X, Qi K, Gao L. Degradation of tetracycline by peroxymonosulfate activated with Mn 0.85Fe 2.15O 4-CNTs: Key role of singlet oxygen. Environ Res 2023; 227:115750. [PMID: 37003552 DOI: 10.1016/j.envres.2023.115750] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/16/2023] [Accepted: 03/22/2023] [Indexed: 05/08/2023]
Abstract
Tetracycline (TC) is a kind of electron-rich organic, and singlet oxygen (1O2) oxidative pathway-based advanced oxidation processes (AOPs) have represented outstanding selective degradation to such pollutants. In this paper, an excellent prepared strategy for 1O2 dominated catalyst was adopted. A catalyst composed of non-stoichiometric doping Mn-Fe bimetallic oxide supported on CNTs (0.3-Mn0.85Fe2.15O4-CNTs) was synthesized and optimized by regulating the non-stoichiometric doping ratio of Mn & Fe and the loading amount of CNTs. Through optimization and control experiments, the optimized catalyst represented 94.9% of TC removal efficiency within 60 min in neutral condition under relatively low concentrations of Mn0.85Fe2.15O4-CNTs (0.4 g/L) and PMS (0.8 mM). Through SEM and XRD characterization, Mn0.85Fe2.15O4-CNTs was a hybrid of cubic Mn0.85Fe2.15O4 uniformly dispersing on CNTs. By the characterization of XPS and FT-IR, more CO bonds and low-valent Mn (II) & Fe (II) appeared in Mn0.85Fe2.15O4-CNTs. Reactive oxygen species (ROS) was determined by radical quenching experiments and electron spin resonance (EPR) spectroscopy, and 1O2 was verified to be the dominated ROS. The mechanism for PMS' activation was speculated, and more low-valent Mn (II) and Fe (II) contributed to the production of free-radical (•OH & SO4•-), while the reaction between PMS and the enhanced CO bond on Mn0.85Fe2.15O4-CNTs played a crucial part in the generation of 1O2. In addition, through the comparative degradation of four different organics with distinct charge densities, the excellent selectivity of 1O2-based oxidative pathway to electron-rich pollutants was found. This paper supplied a good strategy to prepare catalyst for PMS activation to form a 1O2-dominated oxidative pathway.
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Affiliation(s)
- Xueer Peng
- College of Environmental Engineering, University of Science & Technology of Taiyuan, Jinzhong, 030600, China
| | - Chenyang Zhou
- College of Environmental Engineering, University of Science & Technology of Taiyuan, Jinzhong, 030600, China
| | - Xuelian Li
- College of Environmental Engineering, University of Science & Technology of Taiyuan, Jinzhong, 030600, China
| | - Kai Qi
- College of Environmental Engineering, University of Science & Technology of Taiyuan, Jinzhong, 030600, China
| | - Lili Gao
- College of Environmental Engineering, University of Science & Technology of Taiyuan, Jinzhong, 030600, China.
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120
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Li M, Bai L, Jiang S, Sillanpää M, Huang Y, Liu Y. Electrocatalytic transformation of oxygen to hydroxyl radicals via three-electron pathway using nitrogen-doped carbon nanotube-encapsulated nickel nanocatalysts for effective organic decontamination. J Hazard Mater 2023; 452:131352. [PMID: 37027919 DOI: 10.1016/j.jhazmat.2023.131352] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 03/29/2023] [Accepted: 04/01/2023] [Indexed: 06/19/2023]
Abstract
The selective electrochemical reduction of oxygen (O2) via 3e- pathway for the production of hydroxyl radicals (HO) is a promising alternative to conventional electro-Fenton process. Here, we developed a nitrogen-doped CNT-encapsulated Ni nanoparticle electrocatalyst (Ni@N-CNT) with high O2 reduction selectivity for the generation of HO•via 3e- pathway. Exposed graphitized N on the CNT shell, and Ni nanoparticles encapsulated within the tip of the N-CNT, played a key role in the generation of H2O2 intermediate (*HOOH) via a 2e- oxygen reduction reaction. Meanwhile, those encapsulated Ni nanoparticles at the tip of the N-CNT facilitated the sequential HO• generation by directly decomposing the electrogenerated *H2O2 in a 1e- reduction reaction on the N-CNT shell without inducing Fenton reaction. Improved bisphenol A (BPA) degradation efficiency were observed when compared with conventional batch system (97.5% vs 66.4%). Trials using Ni@N-CNT in a flow-through configuration demonstrated a complete removal of BPA within 30 min (k = 0.12 min-1) with a limited energy consumption of 0.068 kW·h·g-1 TOC.
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Affiliation(s)
- Mohua Li
- College of Life Science, Taizhou University, Taizhou 318000, China; College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China; College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316022, China
| | - Liang Bai
- College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316022, China
| | - Shengtao Jiang
- College of Life Science, Taizhou University, Taizhou 318000, China.
| | - Mika Sillanpää
- Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, South Africa
| | - Yingping Huang
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China
| | - Yanbiao Liu
- College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China.
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Zhao JF, Li LH, Guo XJ, Zhang HX, Tang LL, Ding CH, Liu WS. Identification of natural product inhibitors of PTP1B based on high-throughput virtual screening strategy: In silico, in vitro and in vivo studies. Int J Biol Macromol 2023:125292. [PMID: 37302637 DOI: 10.1016/j.ijbiomac.2023.125292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 06/05/2023] [Accepted: 06/07/2023] [Indexed: 06/13/2023]
Abstract
Protein tyrosine phosphatase 1B (PTP1B) is a key negative regulator of the insulin signaling pathway, which is a potential therapeutic target for the treatment of type 2 diabetes mellitus (T2DM). In this study, we identified several PTP1B inhibitors with high activity by using high-throughput virtual screening and in vitro enzyme inhibition activity verification strategies. Among them, baicalin was first reported as a selective mixed inhibitor of PTP1B, with IC50 value of 3.87 ± 0.45 μM, and its inhibitory activity against homologous proteins TCPTP, SHP2, and SHP1 exceeded 50 μM. Molecular docking study found that baicalin and PTP1B could bind stably, and revealed that baicalin had a dual inhibitory effect. Cell experiments showed that baicalin was almost non-toxic and could significantly enhance the phosphorylation of IRS-1 in C2C12 myotube cells. Animal experiments showed that baicalin could significantly reduce the blood sugar of STZ-induced diabetic mice models, and had a liver protective effect. In conclusion, this study can provide new ideas for the development of PTP1B selective inhibitors.
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Affiliation(s)
- Ji-Feng Zhao
- Shandong Key Laboratory of Medicine and Health (Clinical Applied Pharmacology), Department of Pharmacy, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China
| | - Li-Hua Li
- Eye Center, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China
| | - Xiao-Jing Guo
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China
| | - Hai-Xia Zhang
- Shandong Key Laboratory of Medicine and Health (Clinical Applied Pharmacology), Department of Pharmacy, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China
| | - Lin-Lin Tang
- Shandong Key Laboratory of Medicine and Health (Clinical Applied Pharmacology), Department of Pharmacy, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China
| | - Chuan-Hua Ding
- Shandong Key Laboratory of Medicine and Health (Clinical Applied Pharmacology), Department of Pharmacy, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China.
| | - Wen-Shan Liu
- Shandong Key Laboratory of Medicine and Health (Clinical Applied Pharmacology), Department of Pharmacy, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang 261041, Shandong Province, China.
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Shahbazi Nia S, Hossain MA, Ji G, Jonnalagadda SK, Obeng S, Rahman MA, Sifat AE, Nozohouri S, Blackwell C, Patel D, Thompson J, Runyon S, Hiranita T, McCurdy CR, McMahon L, Abbruscato TJ, Trippier PC, Neugebauer V, German NA. Studies on diketopiperazine and dipeptide analogs as opioid receptor ligands. Eur J Med Chem 2023; 254:115309. [PMID: 37054561 PMCID: PMC10634475 DOI: 10.1016/j.ejmech.2023.115309] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 03/20/2023] [Accepted: 03/22/2023] [Indexed: 03/31/2023]
Abstract
Using the structure of gliotoxin as a starting point, we have prepared two different chemotypes with selective affinity to the kappa opioid receptor (KOR). Using medicinal chemistry approaches and structure-activity relationship (SAR) studies, structural features required for the observed affinity were identified, and advanced molecules with favorable Multiparameter Optimization (MPO) and Ligand Lipophilicity (LLE) profiles were prepared. Using the Thermal Place Preference Test (TPPT), we have shown that compound2 blocks the antinociceptive effect of U50488, a known KOR agonist. Multiple reports suggest that modulation of KOR signaling is a promising therapeutic strategy in treating neuropathic pain (NP). As a proof-of-concept study, we tested compound 2 in a rat model of NP and recorded its ability to modulate sensory and emotional pain-related behaviors. Observed in vitro and in vivo results suggest that these ligands can be used to develop compounds with potential application as pain therapeutics.
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Affiliation(s)
- Siavash Shahbazi Nia
- Department of Pharmaceutical Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106, USA
| | - Mohammad Anwar Hossain
- Department of Pharmaceutical Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106, USA
| | - Guangchen Ji
- Department of Pharmacology and Neuroscience, School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA; Center of Excellence for Translational Neuroscience and Therapeutics, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA
| | - Sravan K Jonnalagadda
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Samuel Obeng
- Department of Pharmaceutical, Social and Administrative Sciences, McWhorter School of Pharmacy, Samford University, Birmingham, AL, 35229, USA
| | - Md Ashrafur Rahman
- Department of Pharmaceutical Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106, USA
| | - Ali Ehsan Sifat
- Department of Pharmaceutical Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106, USA
| | - Saeideh Nozohouri
- Department of Pharmaceutical Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106, USA
| | - Collin Blackwell
- Department of Pharmaceutical Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106, USA
| | - Dhavalkumar Patel
- Office of Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106, USA
| | - Jon Thompson
- Veterinary School of Medicine, Texas Tech University, Amarillo, TX, 79106, USA
| | - Scott Runyon
- Reserach Triangle Institute, Research Triangle Park, Durham, NC, 27709, USA
| | - Takato Hiranita
- Department of Pharmacology, University of Texas Health San Antonio, San Antonio, TX, 78229, USA
| | - Christopher R McCurdy
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL, 32610, USA
| | - Lance McMahon
- Department of Pharmaceutical Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106, USA
| | - Thomas J Abbruscato
- Department of Pharmaceutical Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106, USA
| | - Paul C Trippier
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA; UNMC Center for Drug Discovery, University of Nebraska Medical Center, Omaha, NE, 68106, USA
| | - Volker Neugebauer
- Department of Pharmacology and Neuroscience, School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA; Center of Excellence for Translational Neuroscience and Therapeutics, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA; Garrison Institute on Aging, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA
| | - Nadezhda A German
- Department of Pharmaceutical Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106, USA; Center of Excellence for Translational Neuroscience and Therapeutics, Texas Tech University Health Sciences Center, Lubbock, TX, 79430, USA.
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Cao Y, Wu X, Li B, Tang X, Lin X, Li P, Chen H, Huang F, Wei C, Wei J, Qiu G. Ca-La layered double hydroxide (LDH) for selective and efficient removal of phosphate from wastewater. Chemosphere 2023; 325:138378. [PMID: 36906008 DOI: 10.1016/j.chemosphere.2023.138378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 03/02/2023] [Accepted: 03/09/2023] [Indexed: 06/18/2023]
Abstract
Adsorption showed advantages in removing phosphorus (P) at low concentrations. Desirable adsorbents should have sufficiently high adsorption capacity and selectivity. In this study, a Ca-La layered double hydroxide (LDH) was synthesized for the first time by using a simple hydrothermal coprecipitation method for phosphate removal from wastewater. A maximum adsorption capacity of 194.04 mgP/g was achieved, ranking on the top of known LDHs. Adsorption kinetic experiments showed that 0.02 g/L Ca-La LDH could effectively reduce PO43-P from 1.0 to <0.02 mg/L within 30 min. With the copresence of bicarbonate and sulfate at concentrations 17.1 and 35.7 times of that of PO43-P, the Ca-La LDH showed promising selectivity towards phosphate (with a reduction in the adsorption capacity of <13.6%). In addition, four other (Mg-La, Co-La, Ni-La, and Cu-La) LDHs containing different divalent metal ions were synthesized by using the same coprecipitation method. Results showed much higher P adsorption performance of the Ca-La LDH than those LDHs. Field Emission Electron Microscopy (FE-SEM)-Energy Dispersive Spectroscopy (EDS), X-ray Diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), Fourier Transform Infrared Spectroscopy (FTIR), and mesoporous analysis were performed to characterize and compare the adsorption mechanisms of different LDHs. The high adsorption capacity and selectivity of the Ca-La LDH were mainly explained by selective chemical adsorption, ion exchange, and inner sphere complexation.
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Affiliation(s)
- Yuhang Cao
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Xuewei Wu
- Guangzhou Sewage Purification Co., Ltd, Guangzhou, 510006, China
| | - Biqing Li
- Guangzhou Sewage Purification Co., Ltd, Guangzhou, 510006, China
| | - Xia Tang
- Guangzhou Sewage Purification Co., Ltd, Guangzhou, 510006, China
| | - Xueran Lin
- Guangzhou Sewage Purification Co., Ltd, Guangzhou, 510006, China
| | - Pengfei Li
- Guangzhou Sewage Purification Co., Ltd, Guangzhou, 510006, China
| | - Hang Chen
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Fu Huang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Chaohai Wei
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; Key Laboratory of Pollution Control and Ecological Restoration in Industrial Clusters, Ministry of Education, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, Guangzhou, 510006, China
| | - Jian Wei
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
| | - Guanglei Qiu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; Key Laboratory of Pollution Control and Ecological Restoration in Industrial Clusters, Ministry of Education, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, Guangzhou, 510006, China.
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Wenzel CK, von Montfort C, Ebbert L, Klahm NP, Reichert AS, Stahl W, Brenneisen P. The natural chalcone cardamonin selectively induces apoptosis in human neuroblastoma cells. Toxicol In Vitro 2023:105625. [PMID: 37268255 DOI: 10.1016/j.tiv.2023.105625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/11/2023] [Accepted: 05/26/2023] [Indexed: 06/04/2023]
Abstract
Neuroblastoma is the most common extracranial malignant tumor in childhood. Approximately 60% of all patients are classified as high-risk and require intensive treatment including non-selective chemotherapeutic agents leading to severe side effects. Recently, phytochemicals like the natural chalcone cardamonin (CD) have gained attention in cancer research. For the first time, we investigated the selective anti-cancer effects of CD in SH-SY5Y human neuroblastoma cells compared to healthy (normal) fibroblasts (NHDF). Our study revealed selective and dose-dependent cytotoxicity of CD in SH-SY5Y. The natural chalcone CD specifically altered the mitochondrial membrane potential (ΔΨm), as an early marker of apoptosis, in human neuroblastoma cells. Caspase activity was also selectively induced and the amount of cleaved caspase substrates such as PARP was thus increased in human neuroblastoma cells. CD-mediated apoptotic cell death was rescued by pan caspase inhibitor Z-VAD-FMK. The natural chalcone CD selectively induced apoptosis, the programmed cell death, in SH-SY5Y human neuroblastoma cells whereas NHDF being a model for normal (healthy) cells were unaffected. Our data indicates a clinical potential of CD in the more selective and less harmful treatment of neuroblastoma.
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Affiliation(s)
- Chantal-Kristin Wenzel
- Institute of Biochemistry and Molecular Biology I, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany.
| | - Claudia von Montfort
- Institute of Biochemistry and Molecular Biology I, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Lara Ebbert
- Institute of Biochemistry and Molecular Biology I, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Niklas P Klahm
- Institute of Biochemistry and Molecular Biology I, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Andreas S Reichert
- Institute of Biochemistry and Molecular Biology I, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Wilhelm Stahl
- Institute of Biochemistry and Molecular Biology I, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Peter Brenneisen
- Institute of Biochemistry and Molecular Biology I, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
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125
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Li Y, Gao H, Jin Y, Zhao R, Huang Y. Peptide-derived coordination frameworks for biomimetic and selective separation. Anal Bioanal Chem 2023:10.1007/s00216-023-04761-0. [PMID: 37233765 DOI: 10.1007/s00216-023-04761-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 05/02/2023] [Accepted: 05/12/2023] [Indexed: 05/27/2023]
Abstract
Peptide-derived metal-organic frameworks (PMOFs) have emerged as a class of biomimetic materials with attractive performances in analytical and bioanalytical chemistry. The incorporation of biomolecule peptides gives the frameworks conformational flexibility, guest adaptability, built-in chirality, and molecular recognition ability, which greatly accelerate the applications of PMOFs in enantiomeric separation, affinity separation, and the enrichment of bioactive species from complicated samples. This review focuses on the recent advances in the engineering and applications of PMOFs in selective separation. The unique biomimetic size-, enantio-, and affinity-selective performances for separation are discussed along with the chemical structures and functions of MOFs and peptides. Updates of the applications of PMOFs in adaptive separation of small molecules, chiral separation of drug molecules, and affinity isolation of bioactive species are summarized. Finally, the promising future and remaining challenges of PMOFs for selective separation of complex biosamples are discussed.
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Affiliation(s)
- Yongming Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Han Gao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yulong Jin
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Rui Zhao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yanyan Huang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
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126
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Zhen H, Yan X, Chen C, Liu H, Yang X, Su Y, Yang L, Wang X, Zhang Z. Removal of Fe(III)/Al(III)/Mg(II) by phosphonic group functionalized resin in wet-process phosphoric acid: Mechanism and intrinsic selectivity. Environ Sci Pollut Res Int 2023:10.1007/s11356-023-27600-2. [PMID: 37209342 DOI: 10.1007/s11356-023-27600-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 05/09/2023] [Indexed: 05/22/2023]
Abstract
The removal of iron ions (Fe(III)), aluminum ions (Al(III)), and magnesium ions (Mg(II)) in phosphoric acid (H3PO4) solution is vital for the production of H3PO4 and supply of phosphate fertilizer. However, the mechanism and intrinsic selectivity for removal of Fe(III), Al(III), and Mg(II) from wet-process phosphoric acid (WPA) by phosphonic group (-PO3H2) functionalized MTS9500 are still unclear. In this work, the removal mechanisms were determined via combined analysis of FT-IR, XPS, molecular dynamics (MD), and quantum chemistry (QC) simulations based on density functional theory (DFT). The metal-removal kinetics and isotherms were further studied to confirm the removal mechanisms. The results indicate that Fe(III), Al(III), and Mg(II) interact with the -PO3H2 functional groups in MTS9500 resin with sorption energies of -126.22 kJ·mol-1, -42.82 kJ·mol-1, and -12.94 kJ·mol-1, respectively. Moreover, the intrinsic selectivities of the resin for Fe(III), Al(III), and Mg(II) removal were quantified by the selectivity coefficient (Si/j). The SFe(III)/Al(III), SFe(III)/Mg(II) and SAl(III)/Mg(II) are 18.2, 55.1 and 3.02, respectively. This work replenishes sorption theory that can be used in the recycling of electronic waste treatment acid, sewage treatments, hydrometallurgy, and purification of WPA in industry.
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Affiliation(s)
- Honggang Zhen
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China
| | - Xuefang Yan
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China
| | - Chaojiu Chen
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China
| | - Haozhou Liu
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China
| | - Xiuying Yang
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China
| | - Yingli Su
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China
| | - Lin Yang
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China.
| | - Xinlong Wang
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China
| | - Zhiye Zhang
- School of Chemical Engineering, Sichuan University, 24 South 1st Section, 1st Ring Road, Wuhou District, Chengdu, 610065, Sichuan, China
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Mizio K, Wawrzycka D, Staszewski J, Wysocki R, Maciaszczyk-Dziubinska E. Identification of amino acid substitutions that toggle substrate selectivity of the yeast arsenite transporter Acr3. J Hazard Mater 2023; 456:131653. [PMID: 37224717 DOI: 10.1016/j.jhazmat.2023.131653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/03/2023] [Accepted: 05/15/2023] [Indexed: 05/26/2023]
Abstract
The Acr3 protein family plays a crucial role in metalloid detoxification and includes members from bacteria to higher plants. Most of the Acr3 transporters studied so far are specific for arsenite, whereas Acr3 from budding yeast also shows some capacity to transport antimonite. However, the molecular basis of Acr3 substrate specificity remains poorly understood. By analyzing randomly generated and rationally designed yeast Acr3 variants, critical residues determining substrate specificity were identified for the first time. Replacement of Val173 with Ala abolished antimonite transport without affecting arsenite extrusion. In contrast, substitution of Glu353 with Asp resulted in a loss of arsenite transport activity and a concomitant increase in antimonite translocation capacity. Importantly, Val173 is located close to the hypothetical substrate binding site, whereas Glu353 has been proposed to participate in substrate binding. Identification of key residues conferring substrate selectivity provides a valuable starting point for further studies of the Acr3 family and may have implications for the development of biotechnological applications in metalloid remediation. Moreover, our data contribute to understanding why members of the Acr3 family evolved as arsenite-specific transporters in an environment of ubiquitously present arsenic and trace amounts of antimony.
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Affiliation(s)
- Katarzyna Mizio
- Department of Genetics and Cell Physiology, Faculty of Biological Sciences, University of Wroclaw, 50-328 Wroclaw, Poland
| | - Donata Wawrzycka
- Department of Genetics and Cell Physiology, Faculty of Biological Sciences, University of Wroclaw, 50-328 Wroclaw, Poland
| | - Jacek Staszewski
- Department of Genetics and Cell Physiology, Faculty of Biological Sciences, University of Wroclaw, 50-328 Wroclaw, Poland
| | - Robert Wysocki
- Department of Genetics and Cell Physiology, Faculty of Biological Sciences, University of Wroclaw, 50-328 Wroclaw, Poland
| | - Ewa Maciaszczyk-Dziubinska
- Department of Genetics and Cell Physiology, Faculty of Biological Sciences, University of Wroclaw, 50-328 Wroclaw, Poland.
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Wang QX, Zhang PY, Li QQ, Tong ZJ, Wu JZ, Yu SP, Yu YC, Ding N, Leng XJ, Chang L, Xu JG, Sun SL, Yang Y, Li NG, Shi ZH. Challenges for the development of mutant isocitrate dehydrogenases 1 inhibitors to treat glioma. Eur J Med Chem 2023; 257:115464. [PMID: 37235998 DOI: 10.1016/j.ejmech.2023.115464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/04/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023]
Abstract
Glioma is one of the most common types of brain tumors, and its high recurrence and mortality rates threaten human health. In 2008, the frequent isocitrate dehydrogenase 1 (IDH1) mutations in glioma were reported, which brought a new strategy in the treatment of this challenging disease. In this perspective, we first discuss the possible gliomagenesis after IDH1 mutations (mIDH1). Subsequently, we systematically investigate the reported mIDH1 inhibitors and present a comparative analysis of the ligand-binding pocket in mIDH1. Additionally, we also discuss the binding features and physicochemical properties of different mIDH1 inhibitors to facilitate the future development of mIDH1 inhibitors. Finally, we discuss the possible selectivity features of mIDH1 inhibitors against WT-IDH1 and IDH2 by combining protein-based and ligand-based information. We hope that this perspective can inspire the development of mIDH1 inhibitors and bring potent mIDH1 inhibitors for the treatment of glioma.
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Affiliation(s)
- Qing-Xin Wang
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, Jiangsu, 210023, China
| | - Peng-Yu Zhang
- School of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Qing-Qing Li
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, Jiangsu, 210023, China
| | - Zhen-Jiang Tong
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, Jiangsu, 210023, China
| | - Jia-Zhen Wu
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, Jiangsu, 210023, China
| | - Shao-Peng Yu
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, Jiangsu, 210023, China
| | - Yan-Cheng Yu
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, Jiangsu, 210023, China
| | - Ning Ding
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, Jiangsu, 210023, China
| | - Xue-Jiao Leng
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, Jiangsu, 210023, China
| | - Liang Chang
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, Jiangsu, 210023, China
| | - Jin-Guo Xu
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, Jiangsu, 210023, China
| | - Shan-Liang Sun
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, Jiangsu, 210023, China.
| | - Ye Yang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, 210023, China.
| | - Nian-Guang Li
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, Jiangsu, 210023, China.
| | - Zhi-Hao Shi
- Laboratory of Molecular Design and Drug Discovery, School of Science, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu, 211198, China.
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Feng C, Chen M, Zhou Y, Xie Z, Li X, Xiaokaiti P, Kansha Y, Abudula A, Guan G. High-entropy NiFeCoV disulfides for enhanced alkaline water/seawater electrolysis. J Colloid Interface Sci 2023; 645:724-734. [PMID: 37172482 DOI: 10.1016/j.jcis.2023.04.172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/15/2023] [Accepted: 04/30/2023] [Indexed: 05/15/2023]
Abstract
Creating electrocatalysts with high activity and stability to meet the needs of highly effective seawater splitting is of great importance to achieve the goal of hydrogen production from abundant seawater source, which however is still challenging owing to sluggish oxygen evolution reaction (OER) dynamics and the existed competitive chloride evolution reaction. Herein, high-entropy (NiFeCoV)S2 porous nanosheets are uniformly fabricated on Ni foam via a hydrothermal reaction process with a sequential sulfurization step for alkaline water/seawater electrolysis. The obtained rough and porous nanosheets provide large active surface area and exposed more active sites, which can facilitate mass transfer and are conducive to the improvement of the catalytic performance. Combined with the strong synergistic electron modulation effect of multi elements in (NiFeCoV)S2, the as-fabricated catalyst exhibits low OER overpotentials of 220 and 299 mV at 100 mA cm-2 in alkaline water and natural seawater, respectively. Besides, the catalyst can withstand a long-term durability test for more than 50 h without hypochlorite evolution, showing excellent corrosion resistance and OER selectivity. By employing the (NiFeCoV)S2 as the electrocatalyst for both anode and cathode to construct an overall water/seawater splitting electrolyzer, the required cell voltages are only 1.69 and 1.77 V to reach 100 mA cm-2 in alkaline water and natural seawater, respectively, showing a promising prospect towards the practical application for efficient water/seawater electrolysis.
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Affiliation(s)
- Changrui Feng
- Graduate School of Science and Technology, Hirosaki University, 3-Bunkyocho, Hirosaki 036-8561, Japan
| | - Meng Chen
- Graduate School of Science and Technology, Hirosaki University, 3-Bunkyocho, Hirosaki 036-8561, Japan
| | - Yifan Zhou
- Energy Conversion Engineering Laboratory, Institute of Regional Innovation, Hirosaki University, 3-Bunkyocho, Hirosaki 036-8561, Japan; Graduate School of Sustainable Community Studies, Hirosaki University, 1-Bunkyocho, Hirosaki 036-8560, Japan
| | - Zhengkun Xie
- College of Chemistry, Zhengzhou University, Kexue Avenue 100, Zhengzhou, Henan 450001, China
| | - Xiumin Li
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | | | - Yasuki Kansha
- Organization for Programs on Environmental Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
| | - Abuliti Abudula
- Graduate School of Science and Technology, Hirosaki University, 3-Bunkyocho, Hirosaki 036-8561, Japan.
| | - Guoqing Guan
- Graduate School of Science and Technology, Hirosaki University, 3-Bunkyocho, Hirosaki 036-8561, Japan; Energy Conversion Engineering Laboratory, Institute of Regional Innovation, Hirosaki University, 3-Bunkyocho, Hirosaki 036-8561, Japan; Graduate School of Sustainable Community Studies, Hirosaki University, 1-Bunkyocho, Hirosaki 036-8560, Japan.
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Matricon P, Nguyen AT, Vo DD, Baltos JA, Jaiteh M, Luttens A, Kampen S, Christopoulos A, Kihlberg J, May LT, Carlsson J. Structure-based virtual screening discovers potent and selective adenosine A 1 receptor antagonists. Eur J Med Chem 2023; 257:115419. [PMID: 37301076 DOI: 10.1016/j.ejmech.2023.115419] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 06/12/2023]
Abstract
Development of subtype-selective leads is essential in drug discovery campaigns targeting G protein-coupled receptors (GPCRs). Herein, a structure-based virtual screening approach to rationally design subtype-selective ligands was applied to the A1 and A2A adenosine receptors (A1R and A2AR). Crystal structures of these closely related subtypes revealed a non-conserved subpocket in the binding sites that could be exploited to identify A1R selective ligands. A library of 4.6 million compounds was screened computationally against both receptors using molecular docking and 20 A1R selective ligands were predicted. Of these, seven antagonized the A1R with micromolar activities and several compounds displayed slight selectivity for this subtype. Twenty-seven analogs of two discovered scaffolds were designed, resulting in antagonists with nanomolar potency and up to 76-fold A1R-selectivity. Our results show the potential of structure-based virtual screening to guide discovery and optimization of subtype-selective ligands, which could facilitate the development of safer drugs.
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Affiliation(s)
- Pierre Matricon
- Science for Life Laboratory, Department of Cell and Molecular Biology, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Anh Tn Nguyen
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, 3052, Australia
| | - Duc Duy Vo
- Science for Life Laboratory, Department of Cell and Molecular Biology, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Jo-Anne Baltos
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, 3052, Australia
| | - Mariama Jaiteh
- Science for Life Laboratory, Department of Cell and Molecular Biology, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Andreas Luttens
- Science for Life Laboratory, Department of Cell and Molecular Biology, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Stefanie Kampen
- Science for Life Laboratory, Department of Cell and Molecular Biology, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Arthur Christopoulos
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, 3052, Australia
| | - Jan Kihlberg
- Department of Chemistry - BMC, Uppsala University, SE-751 23, Uppsala, Sweden
| | - Lauren Therese May
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, 3052, Australia.
| | - Jens Carlsson
- Science for Life Laboratory, Department of Cell and Molecular Biology, Uppsala University, SE-751 24, Uppsala, Sweden.
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El-Azazy M, El-Shafie AS, Al-Mulla R, Hassan SS, Nimir HI. Enhanced adsorptive removal of rifampicin and tigecycline from single system using nano-ceria decorated biochar of mango seed kernel. Heliyon 2023; 9:e15802. [PMID: 37180896 PMCID: PMC10172925 DOI: 10.1016/j.heliyon.2023.e15802] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 04/16/2023] [Accepted: 04/21/2023] [Indexed: 05/16/2023] Open
Abstract
Pharmaceutically active compounds (PhACs) represent an emerging class of contaminants. With a potential to negatively impact human health and the ecosystem, existence of pharmaceuticals in the aquatic systems is becoming a worrying concern. Antibiotics is a major class of PhACs and their existence in wastewater signifies a health risk on the long run. With the purpose of competently removing antibiotics from wastewater, cost-effective, and copiously available waste-derived adsorbents were structured. In this study, mango seeds kernel (MSK), both as a pristine biochar (Py-MSK) and as a nano-ceria-laden (Ce-Py-MSK) were applied for the remediation of rifampicin (RIFM) and tigecycline (TIGC). To save time and resources, adsorption experiments were managed using a multivariate-based scheme executing the fractional factorial design (FrFD). Percentage removal (%R) of both antibiotics was exploited in terms of four variables: pH, adsorbent dosage, initial drug concentration, and contact time. Preliminary experiments showed that Ce-Py-MSK has higher adsorption efficiency for both RIFM and TIGC compared to Py-MSK. The %R was 92.36% for RIFM compared to 90.13% for TIGC. With the purpose of comprehending the adsorption process, structural elucidation of both sorbents was performed using FT-IR, SEM, TEM, EDX, and XRD analyses which confirmed the decoration of the adsorbent surface with the nano-ceria. BET analysis revealed that Ce-Py-MSK has a higher surface area (33.83 m2/g) contrasted to the Py-MSK (24.72 m2/g). Isotherm parameters revealed that Freundlich model best fit Ce-Py-MSK-drug interactions. A maximum adsorption capacity (qm) of 102.25 and 49.28 mg/g was attained for RIFM and TIGC, respectively. Adsorption kinetics for both drugs conformed well with both pseudo-second order (PSO) and Elovich models. This study, therefore, has established the suitability of Ce-Py-MSK as a green, sustainable, cost-effective, selective, and efficient adsorbent for the treatment of pharmaceutical wastewater.
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Khan M, Al-Ghouti MA, Khraisheh M, Shomar B, Hijji Y, Tong Y, Mansour S, Nasser MS. Synthesis of nanostructured novel ion-imprinted polymer for selective removal of Cu 2+ and Sr 2+ ions from reverse osmosis concentrated brine. Environ Res 2023; 231:116024. [PMID: 37121345 DOI: 10.1016/j.envres.2023.116024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 04/15/2023] [Accepted: 04/28/2023] [Indexed: 05/09/2023]
Abstract
This study aims to prepare an ion-imprinted polymer (IIP) using copper sulfate as a template and potassium persulfate as an initiator to selectively adsorb copper ions (Cu2+) from aqueous solutions and in an attempt to also test its applicability for removing strontium ions (Sr2+). The prepared polymer was denoted by IIP-Cu. Various physical and chemical characterizations were performed for the prepared IIP-Cu. The scanning electron microscopy and transmission electron microscopy analyses confirmed the cavities formed after the removal of the template. It also indicated that the IIP-Cu had a rough and porous topology. The X-ray photoelectron spectroscopy confirmed the successful removal of the Cu template from IIP-Cu. The Brunauer-Emmet-Teller revealed that the surface area of IIP-Cu is as high as 152.3 m2/g while the pore radius is 8.51 nm. The effect of pH indicated that the maximum adsorption of Cu2+ was achieved at pH 8 with 98.7%. Isotherm studies revealed that the adsorption of Cu2+ was best explained using Langmuir models with a maximum adsorption capacity of 159 mg/g. The effect of temperature revealed that an increase in temperature had an adverse impact on Cu2+ removal from the aqueous solution, which was further confirmed by thermodynamic studies. The negative value of standard enthalpy change (-4.641 kJ/mol) revealed that the adsorption of Cu2+ onto IIP-Cu was exothermic. While the continuous increase in Gibbs free energy from -6776 kJ/mol to -8385 kJ/mol with the increase in temperature indicated that the adsorption process was spontaneous and feasible. Lastly, the positive value of the standard entropy change (0.023 J/mol.K) suggested that the Cu2+ adsorption onto IIP-Cu had a good affinity at the solid-liquid surface. The efficiency of the prepared IIP-Cu was also tested by studying the adsorption capacity using Sr2+ and real brine water. The results revealed that IIP-Cu was able to remove 63.57% of Sr2+ at pH 8. While the adsorption studies revealed that the experiment was best described using the Langmuir model with a maximum adsorption capacity of 76.92 mg/g. Additionally, IIP-Cu was applied in a real brine sample, which consisted of various metal ions. The highest percentage of Cu2+ removal was 90.6% and the lowest was 65.63% in 1:4 and 1:1 brine ratios, respectively. However, this study indicates the successful application of IIP-Cu in a real sample when it comes to the effective and efficient removal of Cu2+ in a solution consisting of various competing ions.
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Affiliation(s)
- Mariam Khan
- Environmental Science Program, Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, Doha, P.O. Box: 2713, Qatar
| | - Mohammad A Al-Ghouti
- Environmental Science Program, Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, Doha, P.O. Box: 2713, Qatar.
| | - Majeda Khraisheh
- Department of Chemical Engineering, College of Engineering, Qatar University, Doha, P.O. Box: 2713, Qatar
| | - Basem Shomar
- Environmental Science Center, Qatar University, Doha, P.O. Box: 2713, Qatar
| | - Yousef Hijji
- Environmental Science Program, Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, Doha, P.O. Box: 2713, Qatar
| | - Yongfeng Tong
- Core Labs, Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU) 34110 Qatar Foundation, Doha, Qatar
| | - Said Mansour
- Core Labs, Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU) 34110 Qatar Foundation, Doha, Qatar
| | - Mustafa Saleh Nasser
- Gas Processing Center, College of Engineering, Qatar University, Doha, P.O. Box 2713, Qatar
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Damghani T, Wittlinger F, Beyett TS, Eck MJ, Laufer SA, Heppner DE. Structural elements that enable specificity for mutant EGFR kinase domains with next-generation small-molecule inhibitors. Methods Enzymol 2023; 685:171-198. [PMID: 37245901 PMCID: PMC10445336 DOI: 10.1016/bs.mie.2023.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Specificity for a desired enzyme target is an essential property of small-molecule inhibitors. Molecules targeting oncogenic driver mutations in the epidermal growth factor receptor (EGFR) kinase domain have had a considerable clinical impact due to their selective binding to cancer-causing mutants compared to wild type. Despite the availability of clinically approved drugs for cancers driven by EGFR mutants, persistent challenges in drug resistance in the past decades have led to newer generations of drugs with divergent chemical structures. The current clinical challenges are mainly due to acquired resistance to third-generation inhibitors, including by the acquisition of the C797S mutation. Several diverse fourth-generation candidates and tool compounds that inhibit the C797S mutant have emerged, and their structural characterization has revealed molecular factors that allow for EGFR mutant selective binding. Here, we have reviewed all known structurally-characterized EGFR TKIs targeting clinically-relevant mutations to identify specific features that enable C797S inhibition. Newer generation EGFR inhibitors exhibit consistent and previously underutilized hydrogen bonding interactions with the conserved K745 and D855 residue side chains. We also consider binding modes and hydrogen bonding interactions of inhibitors targeting the classical ATP and the more unique allosteric sites.
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Affiliation(s)
- Tahereh Damghani
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY, United States
| | - Florian Wittlinger
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmaceutical Sciences, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - Tyler S Beyett
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, United States; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, United States
| | - Michael J Eck
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, United States; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, United States
| | - Stefan A Laufer
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmaceutical Sciences, Eberhard Karls Universität Tübingen, Tübingen, Germany; Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies", Eberhard Karls Universität Tübingen, Tübingen, Germany; Tübingen Center for Academic Drug Discovery & Development (TüCAD2), Tübingen, Germany
| | - David E Heppner
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY, United States; Department of Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States.
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Yang Y, Xiong Y, Zhu G, Sun M, Zou K, Zhao Y, Zhang Y, Xu Z, Li Y, Zhu W, Jia Q, Li B, Ge G. Discovery of seven-membered ring berberine analogues as highly potent and specific hCES2A inhibitors. Chem Biol Interact 2023; 378:110501. [PMID: 37080375 DOI: 10.1016/j.cbi.2023.110501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/23/2023] [Accepted: 04/18/2023] [Indexed: 04/22/2023]
Abstract
Human carboxylesterase 2A (hCES2A) is a key serine hydrolase responsible for the metabolic clearance of large number of compounds bearing the ester- or amide-bond(s). Inhibition of hCES2A can relieve the chemotherapy-induced toxicity and alter the pharmacokinetic bahaviors of some orally administrate esters-containing agents. However, most of the hCES2A inhibitors show poor cell-membrane permeability and poor specificity. Herein, guided by the structure activity relationships (SAR) of fifteen natural alkaloids against hCES2A, fifteen new seven-membered ring berberine analogues were designed and synthesized, and their anti-hCES2A activities were evaluated. Among all tested compounds, compound 28 showed potent anti-hCES2A effect (IC50 = 1.66 μM) and excellent selectivity over hCES1A (IC50 > 100 μM). The SAR analysis revealed that the seven-membered ring of these berberine analogues was a crucial moiety for hCES2A inhibition, while the secondary amine group of the ring-C is important for improving their specificity over other serine hydrolases. Inhibition kinetic analyses and molecular dynamic simulation demonstrated that 28 strongly inhibited hCES2A in a mixed-inhibition manner, with an estimated Ki value of 1.035 μM. Moreover, 28 could inhibit intracellular hCES2A in living HepG2 cells and exhibited suitable metabolic stability. Collectively, the SAR of seven-membered ring berberine analogues as hCES2A inhibitors were studied, while compound 28 acted as a promising candidate for developing highly selective hCES2A inhibitors.
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Affiliation(s)
- Yun Yang
- School of Pharmacy, Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China; State Key Laboratory of Drug Research, Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China
| | - Yuan Xiong
- School of Pharmacy, Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Guanghao Zhu
- School of Pharmacy, Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Mengru Sun
- School of Pharmacy, Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Kun Zou
- School of Pharmacy, Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Yitian Zhao
- School of Pharmacy, Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Yong Zhang
- State Key Laboratory of Drug Research, Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China
| | - Zhijian Xu
- State Key Laboratory of Drug Research, Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China; School of Pharmacy, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yiming Li
- School of Pharmacy, Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Weiliang Zhu
- State Key Laboratory of Drug Research, Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China; School of Pharmacy, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qi Jia
- School of Pharmacy, Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
| | - Bo Li
- State Key Laboratory of Drug Research, Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China; School of Pharmacy, University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Guangbo Ge
- School of Pharmacy, Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
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Lei T, Jiang X, Zhou Y, Chen H, Bai H, Wang S, Yang X. A multifunctional adsorbent based on 2,3-dimercaptosuccinic acid/dopamine-modified magnetic iron oxide nanoparticles for the removal of heavy-metal ions. J Colloid Interface Sci 2023; 636:153-66. [PMID: 36623368 DOI: 10.1016/j.jcis.2023.01.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 12/12/2022] [Accepted: 01/03/2023] [Indexed: 01/06/2023]
Abstract
Overexploitation of nature by humans has led to an increasingly serious issue of heavy-metal water pollution. To reduce the threat of water pollution to humans and the environment, it is imperative to develop or improve the water treatment technology for heavy-metal-containing wastewater. Functionalized Fe3O4 magnetic nanoparticles (Fe3O4 MNPs) have been widely used as effective adsorbents for the removal of heavy-metal ions from water owing to their high efficiency, low cost, selective adsorption ability, and recyclability. In this study, Fe3O4@DA-DMSA magnetic nanoparticles (FDDMs) were prepared by the functionalization of Fe3O4 MNPs with environmentally friendly dopamine (DA) and a heavy-metal detoxifying agent such as 2,3-dimercaptosuccinic acid (DMSA) for the efficient and rapid adsorption of Pb2+, Cu2+, and Cd2+, with maximum adsorption capacities of 187.62, 63.01, and 49.46 mg/g, respectively. FDDMs exhibited the best ability to remove Pb2+ with a maximum adsorption capacity than that of the most reported Fe3O4 MNP-related adsorbents. In actual wastewater and multi-component simulated water samples contaminated with Pb2+, Cu2+, and Cd2+, the as-prepared adsorbent maintained a good removal ability for Pb2+ with low influence by ionic strength and interfering ions, as well as exhibited an excellent selectivity. According to the results of batch experiments and X-ray photoelectron spectroscopy (XPS) analysis of the adsorbent before and after adsorption, the adsorption mechanism of the adsorbent for the removal of heavy-metal ions mainly involves coordination and ion exchange. In addition, the adsorbent exhibited a good regeneration performance. Therefore, FDDMs can be considered as a promising adsorbent for the treatment of heavy-metal wastewater.
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Xie R, Li Z, Qu G, Zhang Y, Wang C, Zeng Y, Chen Y. The selective and sustainable separation of Cd(II) using C 6MImT/[C 6MIm]PF 6 extractant. Ecotoxicol Environ Saf 2023; 255:114792. [PMID: 36948002 DOI: 10.1016/j.ecoenv.2023.114792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 02/24/2023] [Accepted: 03/14/2023] [Indexed: 06/18/2023]
Abstract
Cadmium has been classified as a kind of human carcinogens, and has a strong mobility in the water environment and this can result in serious harm to human health and environmental safety. Here, a new selective and efficient extraction-recovery strategy for Cd purification is provided by using C6MimT/[C6Mim]PF6 as the green extractant. Due to the high compatibility between C6MimT and [C6Mim]PF6, C6MimT-Cd was efficiently separated from the aqueous phase. When the concentration of Cd(II) was 1000 mg/L, the extraction rate could reached 99.9 %. By comparing [C6MIm]BF4 with [C6MIm]PF6, the hydrophobicity restrained the ion exchange between cation and Cd and significantly reduced the loss of extractant. The extracted Cd(II) was separated in the form of precipitation after stripping. The extraction system of C6MimT/[C6Mim]PF6 was stable after several extraction-stripping cycles. The extraction of Cd(II) by C6MimT/[C6Mim]PF6 system mainly realized by forming a neutral and extractable cadmium complexes between Cd(II) and thione. Based on the natural complexation mechanism between metal and C6MImT, Cd exists as obvious competitive advantage in coordination with C6MimT compare to Pb, Zn, Mg, Cr, Fe. This work overcomes the problems of extractant loss and organic pollution caused by volatile or ion exchange, which can only reduce environmental hazards, but also promote the recovery of cadmium and other valuable resources.
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Affiliation(s)
- Ruosong Xie
- National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Ziying Li
- National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, Faculty of Environmental Science and Engineering, Kunming University of Science & Technology, Kunming, Yunnan 650500, China
| | - Guangfei Qu
- National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, Faculty of Environmental Science and Engineering, Kunming University of Science & Technology, Kunming, Yunnan 650500, China.
| | - Yingjie Zhang
- National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China.
| | - Chenpeng Wang
- National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, Faculty of Environmental Science and Engineering, Kunming University of Science & Technology, Kunming, Yunnan 650500, China
| | - Yingda Zeng
- National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, Faculty of Environmental Science and Engineering, Kunming University of Science & Technology, Kunming, Yunnan 650500, China
| | - Yiting Chen
- National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, Faculty of Environmental Science and Engineering, Kunming University of Science & Technology, Kunming, Yunnan 650500, China
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Yamashita K, Sato K, Tanji Y, Hasegawa JY, Fujihara T. Paddle-Wheel Dirhodium Complexes Bearing Bulky Carboxylate Ligands: Synthesis and Catalysis in Carbene Insertion Reactions. Chem Asian J 2023:e202300223. [PMID: 37032312 DOI: 10.1002/asia.202300223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/05/2023] [Accepted: 04/05/2023] [Indexed: 04/11/2023]
Abstract
Dirhodium complexes bearing bulky carboxylate ligands are synthesized and characterized. The steric bulk of carboxylate ligands could affect the reaction selectivity in Rh-catalyzed intramolecular reactions: Rh catalysts with bulky carboxylate ligands provided five-membered ring products preferentially via the insertion into a carbon-hydrogen bond. Meanwhile, six-membered ring products were obtained using conventional Rh catalysts via the insertion of a carbon-carbon double bond.
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Affiliation(s)
- Kotaro Yamashita
- Kyoto University Faculty of Engineering Graduate School of Engineering: Kyoto Daigaku Kogakubu Daigakuin Kogaku Kenkyuka, Department of Energy and Hydrocarbon Chemistry, JAPAN
| | - Kota Sato
- Kyoto University Faculty of Engineering Graduate School of Engineering: Kyoto Daigaku Kogakubu Daigakuin Kogaku Kenkyuka, Department of Energy and Hydrocarbon Chemistry, JAPAN
| | - Yutaka Tanji
- Kyoto University Faculty of Engineering Graduate School of Engineering: Kyoto Daigaku Kogakubu Daigakuin Kogaku Kenkyuka, Department of Energy and Hydrocarbon Chemistry, JAPAN
| | - Jun-Ya Hasegawa
- Hokkaido University: Hokkaido Daigaku, Institute for Catalysis, JAPAN
| | - Tetsuaki Fujihara
- Kyoto University Faculty of Engineering Graduate School of Engineering: Kyoto Daigaku Kogakubu Daigakuin Kogaku Kenkyuka, Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Nishikyo-Ku, 615-8510, Kyoto, JAPAN
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He Y, Li S, Zhu Y, Wang Y, Chen Y, Zhang D, Wang H, Li Y. Optimization of potent, selective and orally bioavailable biphenyl scaffold as FABP4 inhibitors for anti-inflammation. Eur J Med Chem 2023; 253:115319. [PMID: 37037141 DOI: 10.1016/j.ejmech.2023.115319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/19/2023] [Accepted: 03/27/2023] [Indexed: 04/12/2023]
Abstract
Fatty-acid binding protein 4 (FABP4) is an essential driver for the progression of metabolic-related inflammatory diseases including obesity, diabetes, atherosclerosis, and various lipid metabolism-related tumors. However, FABP4 inhibitors are not yet available for clinical use, which may be associated with their poor selectivity of FABP3, unsatisfactory efficacy and physicochemical properties. Herein, we reported a systematic optimization of a class of biphenyl scaffold molecules as potent FABP4 inhibitors. Further in vitro and in vivo pharmacokinetic studies identified a selective and orally bioavailable compound 10g, with Ki of 0.51 μM against FABP4, Ki of 33.01 μM against FABP3 and bioavailability F% value of 89.4%. In vivo anti-inflammatory efficacy and multi-organ protection study in LPS-induced inflammatory mice model highlighted the potential of compound 10g as a therapeutic candidate in inflammation-related diseases.
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Affiliation(s)
- Yulong He
- School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Shunyi Li
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yueyue Zhu
- School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Yujie Wang
- School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Yuqi Chen
- School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Deqiang Zhang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Heyao Wang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Yingxia Li
- School of Pharmacy, Fudan University, Shanghai, 201203, China.
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139
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Zhang J, Wu P, Zhang X, Wang B. Coordination Dynamics of Iron is a Key Player in the Catalysis of Non-heme Enzymes. Chembiochem 2023:e202300119. [PMID: 37010781 DOI: 10.1002/cbic.202300119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/30/2023] [Accepted: 04/03/2023] [Indexed: 04/04/2023]
Abstract
Mononuclear nonheme iron enzymes catalyze a large variety of oxidative transformations responsible for various biosynthesis and metabolism processes. Unlike their P450 counterparts, non-heme enzymes generally possess flexible and variable coordination architecture, which can endow rich reactivity for non-heme enzymes. This Concept highlights that the coordination dynamics of iron can be a key player in controlling the activity and selectivity of non-heme enzymes. In ergothioneine synthase EgtB, the coordination switch of the sulfoxide radical species enables the efficient and selective C-S coupling reaction. In iron(II)- and 2-oxoglutarate-dependent (Fe/2OG) oxygenases, the conformational flip of ferryl-oxo intermediate can be extensively involved in selective oxidation reactions. Especially, the five-coordinate ferryl-oxo species may allow the substrate coordination via O or N atom, which may facilitate the C-O or C-N coupling reactions via stabilizing the transition states and inhibiting the unwanted hydroxylation reactions.
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Affiliation(s)
| | - Peng Wu
- Ningxia University, School of Chemistry and Chemical Engineering, CHINA
| | - Xuan Zhang
- Ningbo University, School of Chemistry and Chemical Engineering, CHINA
| | - Binju Wang
- xiamen university, department of chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005,, 361005, xiamen, CHINA
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140
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Wu H, Zheng L, Lin L, Guo H, Yang F. "Turn-on" fluorescent sensor for oleanolic acid based on o-phenyl-bridged bis-tetraphenylimidazole. Food Chem 2023; 419:136033. [PMID: 37011574 DOI: 10.1016/j.foodchem.2023.136033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 03/18/2023] [Accepted: 03/21/2023] [Indexed: 04/05/2023]
Abstract
Fluorescent sensors had been extensively applied on sensing various biomolecules effectively, but no fluorescent sensor for oleanolic acid was presented up to now. In this work, the first fluorescent sensor for oleanolic acid was designed and synthesized based on o-phenyl-bridged bis-tetraphenylimidazole (PTPI). PTPI was prepared by bridging two tetraphenylimidazole units and o-phenylenediamine via Schiff-base condensation in yield of 86%. PTPI showed high sensing selectivity for oleanolic acid among 26 biomolecules and ions. The blue fluorescence at 482 nm was enhanced by 4.5 times after sensing oleanolic acid in aqueous media. The fluorescence sensing ability of PTPI for oleanolic acid maintained stable in pH = 5-9. The detecting limitation was as low as 0.032 μM. The detecting mechanism was clarified as 1:1 binding stoichiometry by fluorescence Job's plot, mass spectrometry, 1H nuclear magnetic resonance and fourier transform infrared spectroscopy. The detecting ability of PTPI for oleanolic acid was successfully used for paper test and real samples of grapes and Kuding tea with recoveries in the range of 96.0%-106.0%, indicating the good application potential for on-site detecting oleanolic acid in real samples of fruits and food.
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Affiliation(s)
- Hanqing Wu
- College of Chemistry and Materials Sciences, Fujian Normal University, Fuzhou 350007, PR China; Key Laboratory of Green Energy and Environment Catalysis (Ningde Normal University), Fujian Province University, Ningde 352100, PR China
| | - Linlu Zheng
- College of Medical Sciences, Ningde Normal University, Ningde 352100, PR China
| | - Liangbin Lin
- College of Chemistry and Materials Sciences, Fujian Normal University, Fuzhou 350007, PR China
| | - Hongyu Guo
- College of Chemistry and Materials Sciences, Fujian Normal University, Fuzhou 350007, PR China; Fujian Key Laboratory of Polymer Materials, Fuzhou 350007, PR China.
| | - Fafu Yang
- College of Chemistry and Materials Sciences, Fujian Normal University, Fuzhou 350007, PR China; Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fuzhou 350007, PR China.
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141
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Pakuła K, Sequeiros-Borja C, Biała-Leonhard W, Pawela A, Banasiak J, Bailly A, Radom M, Geisler M, Brezovsky J, Jasiński M. Restriction of access to the central cavity is a major contributor to substrate selectivity in plant ABCG transporters. Cell Mol Life Sci 2023; 80:105. [PMID: 36952129 PMCID: PMC10036432 DOI: 10.1007/s00018-023-04751-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 02/22/2023] [Accepted: 03/06/2023] [Indexed: 03/24/2023]
Abstract
ABCG46 of the legume Medicago truncatula is an ABC-type transporter responsible for highly selective translocation of the phenylpropanoids, 4-coumarate, and liquiritigenin, over the plasma membrane. To investigate molecular determinants of the observed substrate selectivity, we applied a combination of phylogenetic and biochemical analyses, AlphaFold2 structure prediction, molecular dynamics simulations, and mutagenesis. We discovered an unusually narrow transient access path to the central cavity of MtABCG46 that constitutes an initial filter responsible for the selective translocation of phenylpropanoids through a lipid bilayer. Furthermore, we identified remote residue F562 as pivotal for maintaining the stability of this filter. The determination of individual amino acids that impact the selective transport of specialized metabolites may provide new opportunities associated with ABCGs being of interest, in many biological scenarios.
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Affiliation(s)
- Konrad Pakuła
- Department of Plant Molecular Physiology, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Z. Noskowskiego 12/14, 61-704, Poznan, Poland
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614, Poznan, Poland
| | - Carlos Sequeiros-Borja
- Laboratory of Biomolecular Interactions and Transport, Department of Gene Expression, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 6, 61-614, Poznan, Poland
- International Institute of Molecular and Cell Biology in Warsaw, Ks. Trojdena 4, 02-109, Warsaw, Poland
| | - Wanda Biała-Leonhard
- Department of Plant Molecular Physiology, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Z. Noskowskiego 12/14, 61-704, Poznan, Poland
| | - Aleksandra Pawela
- Department of Plant Molecular Physiology, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Z. Noskowskiego 12/14, 61-704, Poznan, Poland
| | - Joanna Banasiak
- Department of Plant Molecular Physiology, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Z. Noskowskiego 12/14, 61-704, Poznan, Poland
| | - Aurélien Bailly
- Department of Plant and Microbial Biology, University of Zurich, Zollikerstrasse 107, 8008, Zurich, Switzerland
| | - Marcin Radom
- Department of Structural Bioinformatics, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Z.Noskowskiego12/14, 61-704, Poznan, Poland
- Institute of Computing Science, Poznan University of Technology, Piotrowo 2, 60-965, Poznan, Poland
| | - Markus Geisler
- Department of Biology, University of Fribourg, Chem. du Musée 10, 1700, Fribourg, Switzerland
| | - Jan Brezovsky
- Laboratory of Biomolecular Interactions and Transport, Department of Gene Expression, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 6, 61-614, Poznan, Poland.
- International Institute of Molecular and Cell Biology in Warsaw, Ks. Trojdena 4, 02-109, Warsaw, Poland.
| | - Michał Jasiński
- Department of Plant Molecular Physiology, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Z. Noskowskiego 12/14, 61-704, Poznan, Poland.
- Department of Biochemistry and Biotechnology, Poznan University of Life Sciences, Dojazd 11, 60-632, Poznan, Poland.
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142
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Kovalová M, Havlíček L, Djukic S, Škerlová J, Peřina M, Pospíšil T, Řezníčková E, Řezáčová P, Jorda R, Kryštof V. Characterization of new highly selective pyrazolo[4,3-d]pyrimidine inhibitor of CDK7. Biomed Pharmacother 2023; 161:114492. [PMID: 36931035 DOI: 10.1016/j.biopha.2023.114492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/22/2023] [Accepted: 03/07/2023] [Indexed: 03/17/2023] Open
Abstract
Targeting cyclin-dependent kinase 7 (CDK7) provides an interesting therapeutic option in cancer therapy because this kinase participates in regulating the cell cycle and transcription. Here, we describe a new trisubstituted pyrazolo[4,3-d]pyrimidine derivative, LGR6768, that inhibits CDK7 in the nanomolar range and displays favourable selectivity across the CDK family. We determined the structure of fully active CDK2/cyclin A2 in complex with LGR6768 at 2.6 Å resolution using X-ray crystallography, revealing conserved interactions within the active site. Structural analysis and comparison with LGR6768 docked to CDK7 provides an explanation of the observed biochemical selectivity, which is linked to a conformational difference in the biphenyl moiety. In cellular experiments, LGR6768 affected regulation of the cell cycle and transcription by inhibiting the phosphorylation of cell cycle CDKs and the carboxy-terminal domain of RNA polymerase II, respectively. LGR6768 limited the proliferation of several leukaemia cell lines, triggered significant changes in protein and mRNA levels related to CDK7 inhibition and induced apoptosis in dose- and time-dependent experiments. Our work supports previous findings and provides further information for the development of selective CDK7 inhibitors.
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143
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Tzioumis NA, Cullen DA, Jolliffe KA, White NG. Selective Removal of Sulfate from Water by Precipitation with a Rigid Bis-amidinium Compound. Angew Chem Int Ed Engl 2023; 62:e202218360. [PMID: 36702770 DOI: 10.1002/anie.202218360] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/25/2023] [Accepted: 01/25/2023] [Indexed: 01/28/2023]
Abstract
A simple, readily prepared biphenyl bis-amidinium compound (1⋅Cl2 ) is able to selectively precipitate sulfate from water. The precipitant is effective at concentrations as low as 1 mM and shows complete selectivity against monovalent anions, and high selectivity even against CO3 2- and HPO4 2- . It is highly effective (>90 % sulfate removed) in both seawater and highly acidic conditions relevant to mining waste-streams. X-ray crystallography reveals that 1⋅SO4 forms a tightly packed, anhydrous, structure where each sulfate anion receives eight hydrogen bonds from amidinium N-H hydrogen bond donors.
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Affiliation(s)
- Nikki A Tzioumis
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, School of Chemistry, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Duncan A Cullen
- Research School of Chemistry, Australian National University, Canberra, ACT, 2600, Australia
| | - Katrina A Jolliffe
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, School of Chemistry, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Nicholas G White
- Research School of Chemistry, Australian National University, Canberra, ACT, 2600, Australia
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144
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Ma X, Wang Y, Wang W, Heinlein J, Pfefferle LD, Tian X. Strategic preparation of porous magnetic molecularly imprinted polymers via a simple and green method for high-performance adsorption and removal of meropenem. Talanta 2023; 258:124419. [PMID: 36893497 DOI: 10.1016/j.talanta.2023.124419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 03/01/2023] [Accepted: 03/04/2023] [Indexed: 03/08/2023]
Abstract
In this study, a facile method has been developed to synthesize a novel type of porous magnetic molecularly imprinted polymers (Fe3O4-MER-MMIPs) for the selective adsorption and removal of meropenem. The Fe3O4-MER-MMIPs, with abundant functional groups and sufficient magnetism for easy separation, are prepared in aqueous solutions. The porous carriers reduce the overall mass of the MMIPs, greatly improving their adsorption capacity per unit mass and optimizing the overall value of the adsorbents. The green preparation conditions, adsorption performance, and physical and chemical properties of Fe3O4-MER-MMIPs have been carefully studied. The developed submicron materials exhibit a homogeneous morphology, satisfactory superparamagnetism (60 emu g-1), large adsorption capacity (11.49 mg g-1), quick adsorption kinetics (40 min), and good practical implementation in human serum and environmental water. Finally, the protocol developed in this work delivers a green and feasible method for synthesizing highly efficient adsorbents for the specific adsorption and removal of other antibiotics as well.
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Affiliation(s)
- Xuan Ma
- The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi, 710021, China
| | - Yue Wang
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China.
| | - Wenting Wang
- Jiangsu Simcere Pharmaceutical Co., Ltd., Nanjing, Jiangsu, 210023, China
| | - Jake Heinlein
- Department of Chemical & Environmental Engineering, Yale University, New Haven, CT, 06520-8286, United States
| | - Lisa D Pfefferle
- Department of Chemical & Environmental Engineering, Yale University, New Haven, CT, 06520-8286, United States
| | - Xuemeng Tian
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
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145
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Hou J, Gong X, Zhong Y, Cheng C, Liu M, Yang Z. Immobilization of tannin onto dialdehyde chitosan as a strategy for highly efficient and selective Au(III) adsorption. Int J Biol Macromol 2023; 235:123919. [PMID: 36871692 DOI: 10.1016/j.ijbiomac.2023.123919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 02/23/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023]
Abstract
Recycling of Au(III) from wastewater can not only increase resource utilization but also reduce environmental pollution. Herein, a chitosan-based bio-adsorbent (DCTS-TA) was successfully synthesized via crosslinking reaction between tannin (TA) and dialdehyde chitosan (DCTS) for the recovery of Au(III) from the solution. The maximum adsorption capacity for Au(III) was 1146.59 mg/g at pH 3.0, which fitted well with the Langmuir model. The XRD, XPS, and SEM-EDS analyses demonstrated that Au(III) adsorption on DCTS-TA was a collaborative process involving electrostatic interaction, chelation, and redox reaction. Existence of multiple coexisting metal ions did not significantly affect the Au(III) adsorption efficiency, with >90 % recovery of DCTS-TA obtained after five cycles. DCTS-TA is a promising candidate for Au(III) recovery from aqueous solutions due to its easy preparation, environmental-friendliness, and high efficiency.
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146
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Gautam SK, Panda S. Highly sensitive Cu-ethylenediamine/PANI composite sensor for NH(3) detection at room temperature. Talanta 2023; 258:124418. [PMID: 36931059 DOI: 10.1016/j.talanta.2023.124418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 02/27/2023] [Accepted: 03/03/2023] [Indexed: 03/07/2023]
Abstract
Ammonia detection is needed in several sectors including environmental monitoring, automobile industry, and in medical diagnosis. Conducting polymers, such as polyaniline (PANI), have been utilized to develop NH3 sensors operating at room temperature. However, the performance of these sensors in terms of sensitivity and selectivity need improvement. Functionalization of conducting PANI with metal nanocomposites have shown improved sensor performance. In this work, we report a highly sensitive copper-based nanocomposite for NH3 detection. The novelty lies in utilization of copper-ethylenediamine (Cu-en) nanocomposite functionalized over PANI for gas sensing. Resistance of the 20 wt% Cu-en with PANI increased 3.8 times upon exposure to 100 ppm of NH3. The nanocomposite sensor detected NH3 concentrations as low as 2 ppm. Further, the sensing mechanism was studied by in-situ IV characteristics and impedance spectroscopy during NH3 exposure. NH3 showed ionic interaction with PANI, and Cu2+. The strong affinity of Cu2+ for the lone pair of NH3 enhanced the sensor response from 0.78 to 3.8 for 100 ppm of NH3 at 20 °C. The sensor response was completely recovered after heating at 75 °C, which indicates reusability of the sensor. The sensor showed selectivity for NH3 over ethanol and H2S. The response was reasonably stable after bending the flexible sensor for 1000 times at a radius of 5 mm.
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147
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Wu K, He R, Li Z, Qiu K, Xiao G, Peng L, Meng X, Zheng C, Zhang Z, Cai Q. Discovery of 3,5-diaryl-1H-pyrazol-based ureas as potent RET inhibitors. Eur J Med Chem 2023; 251:115237. [PMID: 36905915 DOI: 10.1016/j.ejmech.2023.115237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 02/22/2023] [Accepted: 02/23/2023] [Indexed: 03/06/2023]
Abstract
Rearranged during transfection (RET) is a promising target for antitumor drug development. Multikinase inhibitors (MKI) have been developed for RET-driven cancers but displayed limited efficacy in disease control. Two selective RET inhibitors were approved by FDA in 2020 and proved potent clinical efficacy. However, the discovery of novel RET inhibitors with high target selectivity and improved safety is still highly desirable. Herein, we reported a class of 3,5-diaryl-1H-pyrazol-based ureas as new RET inhibitors. The representative compounds 17a/b displayed high selectivity to other kinases, and potently inhibited isogenic BaF3-CCDC6-RET cells harboring wild-type, or gatekeeper mutation (V804M). They also displayed moderate potency against BaF3-CCDC6-RET-G810C with solvent-front mutation. Compound 17b showed better pharmacokinetics properties and demonstrated promising oral in vivo antitumor efficacy in a BaF3-CCDC6-RET-V804M xenograft model. It may be utilized as a new lead compound for further development.
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148
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Cao J, Xu Z, Chen Y, Li S, Jiang Y, Bai L, Yu H, Li H, Bian Z. Tailoring the Asymmetric Structure of NH 2 -UiO-66 Metal-Organic Frameworks for Light-promoted Selective and Efficient Gold Extraction and Separation. Angew Chem Int Ed Engl 2023; 62:e202302202. [PMID: 36866944 DOI: 10.1002/anie.202302202] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Indexed: 03/04/2023]
Abstract
Designing adsorption materials with high adsorption capacities and selectivities is highly desirable for precious metal recovery. Desorption performance is also particularly crucial for subsequent precious metal recovery and adsorbent regeneration. Herein, a metal-organic framework (MOF) material (NH2 -UiO-66) with an asymmetric electronic structure of the central zirconium oxygen cluster has an exceptional gold extraction capacity of 2.04 g g-1 under light irradiation. The selectivity of NH2 -UiO-66 for gold ions is up to 98.8 % in the presence of interfering ions. Interestingly, the gold ions adsorbed on the surface of NH2 -UiO-66 spontaneously reduce in situ, undergo nucleation and growth and finally achieve the phase separation of high-purity gold particles from NH2 -UiO-66. The desorption and separation efficiency of gold particles from the adsorbent surface reaches 89 %. Theoretical calculations indicate that -NH2 functions as a dual donor of electrons and protons, and the asymmetric structure of NH2 -UiO-66 leads to energetically advantageous multinuclear gold capture and desorption. This adsorption material can greatly facilitate the recovery of gold from wastewater and can easily realize the recycling of the adsorbent.
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Affiliation(s)
- Jiazhen Cao
- MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234, China
| | - Zhenmin Xu
- MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234, China
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, China
| | - Yao Chen
- MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234, China
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438, China
| | - Shuangjun Li
- MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234, China
| | - Yue Jiang
- Key Laboratory of Yangtze River Water Environment, Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai, 200092, China
| | - Lele Bai
- MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234, China
| | - Han Yu
- MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234, China
| | - Hexing Li
- MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234, China
| | - Zhenfeng Bian
- MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234, China
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149
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Alizadeh M, Bayat Y. Influence of functional groups in chemical reactivity and optoelectronic properties of novel glycidyl nitrate copolymers (GNCOP): a DFT study. J Mol Model 2023; 29:82. [PMID: 36862218 DOI: 10.1007/s00894-023-05480-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 02/17/2023] [Indexed: 03/03/2023]
Abstract
INTRODUCTION Nowadays, propulsion materials are receiving increased attention as an important component in electric motors. So, awareness of their chemical reactivity and geometric and electronic structures can help to make materials with higher quality and efficiency. In this study, we have proposed novel glycidyl nitrate copolymers (GNCOPs) and meta-substituted derivatives as propulsion materials. METHOD Based on density functional theory (DFT) method, chemical reactivity indices have been calculated for predicting their behavior in burning process. RESULT AND DISSCUSSION Adding functional groups changes reactivity of the GNCOP compound, especially, in the -CN functional group, chemical potential, chemical hardness, and electrophilicity change -0.374, +0.007, and +1.342eV, respectively. In addition, these compounds have dual properties in interaction with oxygen molecule. Optoelectronic study in time-dependent DFT framework shows that there are three peaks with significant excitations. CONCLUSION In conclusion, adding functional group into the GNCOPs can introduce new materials with high energetic properties.
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Affiliation(s)
- Milad Alizadeh
- Faculty of Chemistry and Chemical Engineering, Malek Ashtar University of Technology, Tehran, Iran
| | - Yadollah Bayat
- Faculty of Chemistry and Chemical Engineering, Malek Ashtar University of Technology, Tehran, Iran.
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150
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Guevara EA, Bello C, Poveda C, McFadden IR, Schleuning M, Pellissier L, Graham CH. Hummingbird community structure and nectar resources modulate the response of interspecific competition to forest conversion. Oecologia 2023; 201:761-770. [PMID: 36754882 PMCID: PMC10038955 DOI: 10.1007/s00442-023-05330-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 01/26/2023] [Indexed: 02/10/2023]
Abstract
On-going land-use change has profound impacts on biodiversity by filtering species that cannot survive in disturbed landscapes and potentially altering biotic interactions. In particular, how land-use change reshapes biotic interactions remains an open question. Here, we used selectivity experiments with nectar feeders in natural and converted forests to test the direct and indirect effects of land-use change on resource competition in Andean hummingbirds along an elevational gradient. Selectivity was defined as the time hummingbirds spent at high resource feeders when feeders with both low and high resource values were offered in the presence of other hummingbird species. Selectivity approximates the outcome of interspecific competition (i.e., the resource intake across competing species); in the absence of competition, birds should exhibit higher selectivity. We evaluated the indirect effect of forest conversion on selectivity, as mediated by morphological dissimilarity and flower resource abundance, using structural equation models. We found that forest conversion influenced selectivity at low and mid-elevations, but the influence of morphological dissimilarity and resource availability on selectivity varied between these elevations. At mid-elevation, selectivity was more influenced by the presence of morphologically similar competitors than by resource abundance while at low-elevation resource abundance was a more important predictor of selectivity. Our results suggest that selectivity is influenced by forest conversion, but that the drivers of these changes vary across elevation, highlighting the importance of considering context-dependent variation in the composition of resources and competitors when studying competition.
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Affiliation(s)
- Esteban A Guevara
- Biodiversity and Conservation Biology, Swiss Federal Research Institute WSL, Zürcherstrasse 111, 8903, Birmensdorf, Switzerland.
- Área de Investigación y Monitoreo de Avifauna, Aves y Conservación, BirdLife in Ecuador, Nuño de Valderrama OE7 y Av, Mariana de Jesús, Quito, Ecuador.
- Landscape Ecology Group, Department of Environmental Systems Science, Institute of Terrestrial Ecosystems, ETH Zürich, 8092, Zurich, Switzerland.
| | - Carolina Bello
- Biodiversity and Conservation Biology, Swiss Federal Research Institute WSL, Zürcherstrasse 111, 8903, Birmensdorf, Switzerland
| | - Cristian Poveda
- Área de Investigación y Monitoreo de Avifauna, Aves y Conservación, BirdLife in Ecuador, Nuño de Valderrama OE7 y Av, Mariana de Jesús, Quito, Ecuador
| | - Ian R McFadden
- Biodiversity and Conservation Biology, Swiss Federal Research Institute WSL, Zürcherstrasse 111, 8903, Birmensdorf, Switzerland
- Landscape Ecology Group, Department of Environmental Systems Science, Institute of Terrestrial Ecosystems, ETH Zürich, 8092, Zurich, Switzerland
| | - Matthias Schleuning
- Senckenberg Biodiversity and Climate Research Centre (SBiK-F), Senckenberganlage 25, Main, 60325, Frankfurt am Main, Germany
| | - Loïc Pellissier
- Biodiversity and Conservation Biology, Swiss Federal Research Institute WSL, Zürcherstrasse 111, 8903, Birmensdorf, Switzerland
- Landscape Ecology Group, Department of Environmental Systems Science, Institute of Terrestrial Ecosystems, ETH Zürich, 8092, Zurich, Switzerland
| | - Catherine H Graham
- Biodiversity and Conservation Biology, Swiss Federal Research Institute WSL, Zürcherstrasse 111, 8903, Birmensdorf, Switzerland
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