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Zhang C, Gao Y, Ma J, Li Y, Fan L, Li X. Visual Sensor Array for Multiple Aromatic Amines via Specific Ascorbic Acid Oxidase Mimic Triggered Schiff-Base Chemistry. Anal Chem 2024. [PMID: 39096243 DOI: 10.1021/acs.analchem.4c01841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2024]
Abstract
Redox nanozymes have exhibited various applications in recognizing environmental pollutants but not aromatic amines (a type of typical pollutant). Herein, with Cu2+ as a node and tryptophan (Trp) as a linker, Cu-Trp as a specific ascorbic acid oxidase mimic was synthesized, which could catalyze ascorbic acid (AA) oxidation to dehydroascorbic acid (DHAA). Alternatively, with other natural amino acids as linkers to synthesize Cu-based nanozymes, such catalytic performances are also observed. The as-produced DHAA could react with o-phenylenediamine (OPD) and its derivatives (2,3-naphthalene diamine (NDA), 4-nitro-o-phenylenediamine (4-NO2-OPD), 4-fluoro-o-phenylenediamine (4-F-OPD), 4-chloro-o-phenylenediamine(4-Cl-OPD), and 4-bromo-o-phenylenediamine(4-Br-OPD)) to form a Schiff base and emit fluorescence. Based on the results, with Cu-Trp + AA and Cu-Arg (with arginine (Arg) as a linker) + AA as two sensing channels and extracted red, green, and blue (RGB) values from emitted fluorescence as read-out signals, a visual sensor array was constructed to efficiently distinguish OPD, NDA, 4-NO2-OPD, 4-F-OPD, 4-Cl-OPD, and 4-Br-OPD as low as 10 μM. Such detecting performance was further confirmed through discriminating binary, ternary, quinary, and senary mixtures with various concentration ratios, recognizing 18 unknown samples, and even quantitatively analyzing single aromatic amine. Finally, the discriminating ability was further validated in environmental waters, providing an efficient assay for large-scale scanning levels of multiple aromatic amines.
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Affiliation(s)
- Chi Zhang
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Yuanbo Gao
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Jinyang Ma
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Yunchao Li
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Louzhen Fan
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Xiaohong Li
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
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Limem I, Bouhlel I, Bouchemi M, Kilani S, Boubaker J, Ben-Sghaier M, Skandrani I, Behouri W, Neffati A, Ghedira K, Chekir-Ghedira L. Phlomis mauritanica Extracts Reduce the Xanthine Oxidase Activity, Scavenge the Superoxide Anions, and Inhibit the Aflatoxin B1-, Sodium Azide-, and 4-Nitrophenyldiamine-Induced Mutagenicity in Bacteria. J Med Food 2010; 13:717-24. [DOI: 10.1089/jmf.2008.0299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Ilef Limem
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Ines Bouhlel
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Meriem Bouchemi
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Soumaya Kilani
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Jihed Boubaker
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Mohamed Ben-Sghaier
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Ines Skandrani
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Wissem Behouri
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Aicha Neffati
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Kamel Ghedira
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Leila Chekir-Ghedira
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
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Nakagawa H, Hasumi K, Takami M, Aida-Hyugaji S, Woo JT, Nagai K, Ishikawa T, Wachi M. Identification of two biologically crucial hydroxyl groups of (−)-epigallocatechin gallate in osteoclast culture. Biochem Pharmacol 2007; 73:34-43. [PMID: 17034764 DOI: 10.1016/j.bcp.2006.09.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2006] [Revised: 08/25/2006] [Accepted: 09/05/2006] [Indexed: 10/24/2022]
Abstract
(-)-Epigallocatechin gallate (EGCG) induces cell death of osteoclasts in an Fe(2+)- and H(2)O(2)-dependent manner. In the present study, we further explore the cytotoxic mechanism of EGCG using four EGCG analogues. Molecules methylated at position 4' in the B ring (EGCG-4'-O-Me) or at position 4'' in the D-ring (EGCG-4''-O-Me) showed markedly decreased cytotoxicity to osteoclasts, indicating that hydroxyl groups at these two positions of EGCG are crucial for inducing cell death of osteoclasts. EGCG-4'-O-Me also showed the lowest Fe(3+)-reducing activity among five EGCGs. The Fe(3+)-reducing activity of EGCG was enhanced under conditions whereby protonated EGCG levels were increased, indicating that the protonated status of EGCG was involved in the Fe(3+)-reducing activity. The hydroxyl group at position 4'' in the D-ring was shown by quantum chemical calculation to be preferentially deprotonated among all of the hydroxyl groups in EGCGs. It was also shown that the highest occupied molecular orbital (HOMO) was localized to the B-ring of EGCGs, except for EGCG-4'-O-Me. We report here that the HOMO on the B-ring plays crucial roles in both the Fe(3+)-reducing activity of EGCG and the cytotoxicity of EGCG to osteoclasts, while deprotonation of the hydroxyl group at position 4'' in the D-ring plays a supplementary role.
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Affiliation(s)
- Hiroshi Nakagawa
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
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Plant peroxidases: Versatile catalysts in the synthesis of bioactive natural products. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s1572-5995(02)80047-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Yen GC, Chen HY, Peng HH. Evaluation of the cytotoxicity, mutagenicity and antimutagenicity of emerging edible plants. Food Chem Toxicol 2001; 39:1045-53. [PMID: 11527563 DOI: 10.1016/s0278-6915(01)00053-9] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
This study evaluates the toxic, mutagenic and antimutagenic effects of emerging edible plants that are consumed as new leafy vegetables in Taiwan. Among eight plant extracts, only the extracts of Sol (Solanum nigrum L.) showed cytotoxicity to Salmonella typhimurium TA100 in the absence of S9 mix. The toxicity of extracts from different parts of the Sol plant, such as leaf and stem, immature fruit and mature fruit, towards S. typhimurium TA100 and human lymphocytes was also assayed. The immature fruit extracts of Sol exhibited strong cytotoxicity with dose dependence and induced significant DNA damage in human lymphocytes based on the comet assay. However, no mutagenicity was found in eight plant extracts to TA98 or TA100 either with or without the S9 mixture. Sol and Sec [Sechium edule (Jacq.) Swartz] extracts showed the strongest inhibitory effect towards the mutagenicity of 2-amino-3-methyl-imidazo[4,5-f]quinoline (IQ) in S. typhimurium TA98 and TA100; the ID(50) was less then 1 mg/plate. Cra [Crassocephalum creidioides (Benth.) S. Moore] extracts also expressed moderate antimutagenic activities towards IQ and benzo[a]pyrene (B[a]P) either in TA98 or in TA100; the ID(50) was 1.63-2.41 mg/plate. The extracts from Bas (Basella alba L.), Bou (Boussingaultia gracilis Miers var. pseudobaselloides Bailey), Cen (Centella asiatica L. Urban), Cor (Corchorus olitorius L.) and Por (Portulaca oleracea L.) showed weak to moderate inhibition of mutagenicity of IQ. However, the potential antimutagenicity of these plant extracts towards B[a]P was weaker than that towards IQ. For a direct mutagen, 4-nitroquinoline-N-oxide (NQNO), only the Sol extracts showed strong inhibitory effects in the TA100 system. The antimutagenic activity of water extracts of Sec was partly reduced by heating at 100 degrees C for 20 min. The heat-stable antimutagens in Sec extracts could be produced in the plant extract preparation process. Fractions with molecular weights above 30,000 showed the strongest antimutagenicity and peroxidase activity in all the fractions of the Sec extracts.
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Affiliation(s)
- G C Yen
- Department of Food Science, National Chung Hsing University, 250 Kuokuang Road, Taichung 40227, Taiwan.
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López-Serrano M, Barceló AR. Reversed-phase and size-exclusion chromatography as useful tools in the resolution of peroxidase-mediated (+)-catechin oxidation products. J Chromatogr A 2001; 919:267-73. [PMID: 11442031 DOI: 10.1016/s0021-9673(01)00817-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The peroxidase-catalysed oxidation of plant phenolics involves one-electron oxidation reactions, and yields unstable mono-radical species, which couple to generate heterogeneous product mixtures of different degrees of polymerisation. One such phenolic susceptible to oxidation by peroxidase is (+)-catechin. Low-pressure chromatography on Sephadex LH-20, using methanol as mobile phase, resolves the main peroxidase-mediated (+)-catechin oxidation products into a dimeric compound (dehydrodicatechin A) and an oligomeric fraction with a polymerisation degree equal or greater than 5. These pure fractions were used to develop rapid high-performance liquid chromatographic methods, both reversed-phase and size-exclusion chromatography for the direct analysis of the peroxidase-mediated (+)-catechin oxidation products. The joint use of both chromatographic systems permitted the qualitative and quantitative identification of the peroxidase-mediated (+)-catechin oxidation products, and can thus be considered as a useful tool for analysing the complex mixtures of natural bioactive plant products synthesized in reactions catalyzed by plant peroxidases.
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Affiliation(s)
- M López-Serrano
- Department of Plant Biology (Plant Physiology), University of Murcia, Spain
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Gentile JM, Rahimi S, Zwiesler J, Gentile GJ, Ferguson LR. Effect of selected antimutagens on the genotoxicity of antitumor agents. Mutat Res 1998; 402:289-98. [PMID: 9675316 DOI: 10.1016/s0027-5107(97)00308-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Cyclophosphamide (CP), bleomycin (BL), doxorubicin (DOX) and cisplatin (CISP) are potent antitumor drugs used worldwide against many forms of human cancer. As with most such agents, there can be physiological side-effects and the possible induction of mutations and other genotoxic effects in non-tumor cells. It is common for patients to ingest a host of food supplements to diminish the discomforting side-effects of therapy. Because these food supplements are often also rich in antimutagens that could also affect the biological efficacy of the antitumor drugs, we investigated if such antimutagenic agents were indeed antimutagenic to these antitumor drugs. Using the Salmonella/microsome bioassay, we tested CP, BL, DOX, and CP for mutagenicity in the presence and absence of the antimutagens ascorbic acid (AA), chlorophyllin (CHL) and (+)-catechin (CAT). AA was a very effective antimutagen against CISP and less effective against BL and DOX. It was not antimutagenic to CP. CHL was effective as an antimutagen against all four antitumor drugs, and CAT was a strong inhibitor of DOX mutagenicity, but had little effect on BL, CP and CISP. These data now provide a basis for future in vivo antitumor/antimutagen combination studies to determine if these antimutagens function in a manner to reduce genetic effects without having concomitant effects on intended antitumorogenicity of these therapeutic agents.
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Affiliation(s)
- J M Gentile
- Biology Department, Hope College, Holland, MI 49423, USA
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