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Desvages M, Borgel D, Adam F, Tu G, Jaouen S, Reperant C, Denis CV, Desmaële D, Bianchini EP. A small-molecule hemostatic agent for the reversal of direct oral anticoagulant-induced bleeding. Res Pract Thromb Haemost 2024; 8:102426. [PMID: 38882463 PMCID: PMC11179090 DOI: 10.1016/j.rpth.2024.102426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 04/16/2024] [Accepted: 04/17/2024] [Indexed: 06/18/2024] Open
Abstract
Background The bleeding risk associated with direct oral anticoagulants (DOACs) remains a major concern, and rapid reversal of anticoagulant activity may be required. Although specific and nonspecific hemostatic biotherapies are available, there is a need for small-molecule DOAC reversal agents that are simple and cost-effective to produce, store, and administer. Objectives To identify and characterize a small molecule with procoagulant activity as a DOAC reversal agent. Methods We sought to identify a small procoagulant molecule by screening a chemical library with a plasma clotting assay. The selected molecule was assessed for its procoagulant properties and its ability to reverse the effects of the DOACs in a thrombin generation assay. Its activity as a DOAC reversal agent was also evaluated in a tail-clip bleeding assay in mice. Results The hemostatic molecule (HeMo) dose-dependently promoted thrombin generation in plasma, with dose values effective in producing half-maximum response ranging between 3 and 5 μM, depending on the thrombin generation assay parameter considered. HeMo also restored impaired thrombin generation in DOAC-spiked plasma and reversed DOAC activity in the mouse bleeding model. HeMo significantly reduced apixaban-induced bleeding from 709 to 65 μL (vs 43 μL in controls; P < .01) and dabigatran-induced bleeding from 989 to 155 μL (vs 126 μL in controls; P < .01). Conclusion HeMo is a small-molecule procoagulant that can counterbalance hemostatic disruption by a thrombin inhibitor (dabigatran) or factor Xa inhibitors (apixaban and rivaroxaban). The compound's effective clot formation and versatility make it a possible option for managing the inherent hemorrhagic risk during DOAC therapy.
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Affiliation(s)
- Maximilien Desvages
- Université Paris-Saclay, Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1176, Le Kremlin-Bicêtre, France
- Service d'Hématologie Biologique, Hôpital Necker Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Delphine Borgel
- Université Paris-Saclay, Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1176, Le Kremlin-Bicêtre, France
- Service d'Hématologie Biologique, Hôpital Necker Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Frédéric Adam
- Université Paris-Saclay, Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1176, Le Kremlin-Bicêtre, France
| | - Ge Tu
- Université Paris-Saclay, Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1176, Le Kremlin-Bicêtre, France
- Université Paris-Saclay, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 8612, Institut Galien Paris-Saclay, Orsay, France
| | - Simon Jaouen
- Université Paris-Saclay, Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1176, Le Kremlin-Bicêtre, France
| | - Christelle Reperant
- Université Paris-Saclay, Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1176, Le Kremlin-Bicêtre, France
| | - Cécile V Denis
- Université Paris-Saclay, Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1176, Le Kremlin-Bicêtre, France
| | - Didier Desmaële
- Université Paris-Saclay, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 8612, Institut Galien Paris-Saclay, Orsay, France
| | - Elsa P Bianchini
- Université Paris-Saclay, Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1176, Le Kremlin-Bicêtre, France
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Joyce SA, Clarke DJ. Microbial metabolites as modulators of host physiology. Adv Microb Physiol 2024; 84:83-133. [PMID: 38821635 DOI: 10.1016/bs.ampbs.2023.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2024]
Abstract
The gut microbiota is increasingly recognised as a key player in influencing human health and changes in the gut microbiota have been strongly linked with many non-communicable conditions in humans such as type 2 diabetes, obesity and cardiovascular disease. However, characterising the molecular mechanisms that underpin these associations remains an important challenge for researchers. The gut microbiota is a complex microbial community that acts as a metabolic interface to transform ingested food (and other xenobiotics) into metabolites that are detected in the host faeces, urine and blood. Many of these metabolites are only produced by microbes and there is accumulating evidence to suggest that these microbe-specific metabolites do act as effectors to influence human physiology. For example, the gut microbiota can digest dietary complex polysaccharides (such as fibre) into short-chain fatty acids (SCFA) such as acetate, propionate and butyrate that have a pervasive role in host physiology from nutrition to immune function. In this review we will outline our current understanding of the role of some key microbial metabolites, such as SCFA, indole and bile acids, in human health. Whilst many studies linking microbial metabolites with human health are correlative we will try to highlight examples where genetic evidence is available to support a specific role for a microbial metabolite in host health and well-being.
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Affiliation(s)
- Susan A Joyce
- School of Biochemistry and Cell Biology, University College Cork, Cork, Ireland; APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - David J Clarke
- APC Microbiome Ireland, University College Cork, Cork, Ireland; School of Microbiology, University College Cork, Cork, Ireland.
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Otitoju OB, Alfred MO, Olorunnisola CG, Aderinola FT, Ogunlaja OO, Olukanni OD, Ogunlaja A, Omorogie MO, Unuabonah EI. Distribution and toxicity of dihydroxybenzenes in drinking water sources in Nigeria. RSC Adv 2024; 14:982-994. [PMID: 38174237 PMCID: PMC10759166 DOI: 10.1039/d3ra04877b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 11/14/2023] [Indexed: 01/05/2024] Open
Abstract
This study provides, for the first time, data on the distribution and toxicity of catechol (CAT) and hydroquinone (HQ) in drinking water sources from Africa. Groundwater (boreholes and hand-dug wells) and surface water in three Southwestern States in Nigeria served as sampling sites. The concentrations of CAT and HQ in groundwater and surface water were determined throughout a period of 12 months, evaluating the effects of seasonal variation (rainy and dry seasons). Mean concentrations of CAT in water samples were higher than those of HQ. In this study, CAT was more frequently detected, with its mean concentration in groundwater samples higher in the rainy season (430 μg L-1) than in the dry season (175 μg L-1). Multivariate analysis using the Principal Component Analysis Software suggests that in most sample sites, CAT and HQ in water samples were from entirely different anthropogenic sources. The most impacted population groups were the toddlers and infants. Similarly, maximum and median concentrations of CAT in water samples pose serious risks to Daphnia at both acute and chronic levels. The results from this study suggest the need for further control of these dihydroxybenzenes through regular monitoring and removal from drinking water during treatment.
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Affiliation(s)
- Oluwaferanmi B Otitoju
- African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University PMB 230 Ede Osun State Nigeria +234 805 317 5971 +234 903 878 7959
- Department of Chemical Sciences, Redeemer's University PMB 230 Ede Osun State Nigeria
| | - Moses O Alfred
- African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University PMB 230 Ede Osun State Nigeria +234 805 317 5971 +234 903 878 7959
- Department of Chemical Sciences, Redeemer's University PMB 230 Ede Osun State Nigeria
| | - Chidinma G Olorunnisola
- African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University PMB 230 Ede Osun State Nigeria +234 805 317 5971 +234 903 878 7959
| | - Francis T Aderinola
- Department of Civil Engineering, Redeemer's University PMB 230 Ede Osun State Nigeria
| | - Olumuyiwa O Ogunlaja
- African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University PMB 230 Ede Osun State Nigeria +234 805 317 5971 +234 903 878 7959
- Department of Chemical Sciences, Faculty of Natural and Applied Sciences, Lead City University Ibadan Nigeria
| | - Olumide D Olukanni
- African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University PMB 230 Ede Osun State Nigeria +234 805 317 5971 +234 903 878 7959
- Department of Biochemistry, Redeemer's University PMB 230 Ede Osun State Nigeria
| | - Aemere Ogunlaja
- African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University PMB 230 Ede Osun State Nigeria +234 805 317 5971 +234 903 878 7959
- Department of Biological Sciences, Redeemer's University PMB 230 Ede Osun State Nigeria
| | - Martins O Omorogie
- African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University PMB 230 Ede Osun State Nigeria +234 805 317 5971 +234 903 878 7959
- Department of Chemical Sciences, Redeemer's University PMB 230 Ede Osun State Nigeria
| | - Emmanuel I Unuabonah
- African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University PMB 230 Ede Osun State Nigeria +234 805 317 5971 +234 903 878 7959
- Department of Chemical Sciences, Redeemer's University PMB 230 Ede Osun State Nigeria
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Maślanka M, Tabor W, Krzyżek P, Grabowiecka A, Berlicki Ł, Mucha A. Inhibitory activity of catecholic phosphonic and phosphinic acids against Helicobacter pylori ureolysis. Eur J Med Chem 2023; 257:115528. [PMID: 37290184 DOI: 10.1016/j.ejmech.2023.115528] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/22/2023] [Accepted: 05/25/2023] [Indexed: 06/10/2023]
Abstract
Catechols have been reported to be potent covalent inhibitors of ureases, and they exhibit activity by modifying cysteine residues at the entrance to enzymatic active sites. Following these principles, we designed and synthesized novel catecholic derivatives that contained carboxylate and phosphonic/phosphinic functionalities and assumed expanded specific interactions. When studying the chemical stability of the molecules, we found that their intrinsic acidity catalyzes spontaneous esterification/hydrolysis reactions in methanol or water solutions, respectively. Regarding biological activity, the most promising compound, 2-(3,4-dihydroxyphenyl)-3-phosphonopropionic acid (15), exhibited significant anti-urease potential (Ki = 2.36 μM, Sporosarcinia pasteurii urease), which was reflected in the antiureolytic effect in live Helicobacter pylori cells at a submicromolar concentration (IC50 = 0.75 μM). As illustrated by molecular modeling, this compound was bound in the active site of urease through a set of concerted electrostatic and hydrogen bond interactions. The antiureolytic activity of catecholic phosphonic acids could be specific because these compounds were chemically inert and not cytotoxic to eukaryotic cells.
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Affiliation(s)
- Marta Maślanka
- Department of Bioorganic Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Wojciech Tabor
- Department of Bioorganic Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Paweł Krzyżek
- Department of Microbiology, Faculty of Medicine, Wrocław Medical University, Wybrzeże L. Pasteura 1, 50-367, Wrocław, Poland
| | - Agnieszka Grabowiecka
- Department of Bioorganic Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Łukasz Berlicki
- Department of Bioorganic Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Artur Mucha
- Department of Bioorganic Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland.
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5
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Recent Advances of Green Catalytic System I2/DMSO in C–C and C–Heteroatom Bonds Formation. Catalysts 2022. [DOI: 10.3390/catal12080821] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Developing a green, practical and efficient method for the formation of C–C and C–Heteroatom bonds is an important topic in modern organic synthetic chemistry. In recent years, the I2/DMSO catalytic system has attracted wide attention because of its green, high efficiency, atomic economy, low cost, mild reaction conditions and it is environment-friendly, which is more in line with the requirements of sustainable chemistry. Heteroatom-containing compounds have shown lots of important applications in pharmaceutical synthesis, agrochemicals, material chemistry and organic dyes. At present, the I2/DMSO catalytic system has been successfully applied to the synthesis of various heteroatom-containing compounds. The C–C and C–Heteroatom bonds have been formed efficiently, which has been proved to be a green and mild catalytic system. In this review, the research achievements of the I2/DMSO catalytic system in the formation of C–C and C–Heteroatom bonds from 2015 to date are described, and the research area is prospected. This review attempts to reveal the general law of iodine catalysis and lay a foundation for the design of new reactions.
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Metabolic Profiling of Inga Species with Antitumor Activity. Molecules 2022; 27:molecules27154695. [PMID: 35897874 PMCID: PMC9331837 DOI: 10.3390/molecules27154695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/29/2022] [Accepted: 07/12/2022] [Indexed: 02/01/2023] Open
Abstract
This work evaluated the metabolic profiling of Inga species with antitumor potential. In addition, we described the antigenotoxicity of polyphenols isolated from I. laurina and a proteomic approach using HepG2 cells after treatment with these metabolites. The in vitro cytotoxic activity against HepG2, HT-29 and T98G cancer cell lines was investigated. The assessment of genotoxic damage was carried out through the comet assay. The ethanolic extract from I. laurina seeds was subjected to bioassay-guided fractionation and the most active fractions were characterized. One bioactive fraction with high cytotoxicity against HT-29 human colon cancer cells (IC50 = 4.0 µg mL−1) was found, and it was characterized as a mixture of p-hydroxybenzoic acid and 4-vinyl-phenol. The I. edulis fruit peel (IC50 = 18.6 µg mL−1) and I. laurina seed (IC50 = 15.2 µg mL−1) extracts had cytotoxic activity against the cell line T98G, and its chemical composition showed a variety of phenolic acids. The chemical composition of this species indicated a wide variety of aromatic acids, flavonoids, tannins, and carotenoids. The high concentration (ranging from 5% to 30%) of these polyphenols in the bioactive extract may be responsible for the antitumor potential. Regarding the proteomic approach, we detected proteins directly related to the elimination of ROS, DNA repair, expression of tumor proteins, and apoptosis.
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7
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Boudreau MW, Mulligan MP, Shapiro DJ, Fan TM, Hergenrother PJ. Activators of the Anticipatory Unfolded Protein Response with Enhanced Selectivity for Estrogen Receptor Positive Breast Cancer. J Med Chem 2022; 65:3894-3912. [PMID: 35080871 PMCID: PMC9067622 DOI: 10.1021/acs.jmedchem.1c01730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Approximately 75% of breast cancers are estrogen receptor alpha-positive (ERα+), and targeting ERα directly with ERα antagonists/degraders or indirectly with aromatase inhibitors is a successful therapeutic strategy. However, such treatments are rarely curative and development of resistance is universal. We recently reported ErSO, a compound that induces ERα-dependent cancer cell death through a mechanism distinct from clinically approved ERα drugs, via hyperactivation of the anticipatory unfolded protein response. ErSO has remarkable tumor-eradicative activity in multiple ERα+ tumor models. While ErSO has promise as a new drug, it has effects on ERα-negative (ERα-) cells in certain contexts. Herein, we construct modified versions of ErSO and identify variants with enhanced differential activity between ERα+ and ERα- cells. We report ErSO-DFP, a compound that maintains antitumor efficacy, has enhanced selectivity for ERα+ cancer cells, and is well tolerated in rodents. ErSO-DFP and related compounds represent an intriguing new class for the treatment of ERα+ cancers.
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Affiliation(s)
- Matthew W. Boudreau
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801, United States,Carl R. Woese Institute for Genomic, Biology University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Michael P. Mulligan
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States,Carl R. Woese Institute for Genomic Biology University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - David J. Shapiro
- Cancer Center at Illinois and Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Timothy M. Fan
- Carl R. Woese Institute for Genomic Biology University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States,Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States,Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois 61802, United States
| | - Paul J. Hergenrother
- Department of Chemistry and Cancer, Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States,Carl R. Woese Institute for Genomic Biology University of Illinois at, Urbana-Champaign, Urbana, Illinois 61801, United States
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Zhao AX, Horsfall LE, Hulme AN. New Methods for the Synthesis of Spirocyclic Cephalosporin Analogues. Molecules 2021; 26:6035. [PMID: 34641579 PMCID: PMC8512572 DOI: 10.3390/molecules26196035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 11/30/2022] Open
Abstract
Spiro compounds provide attractive targets in drug discovery due to their inherent three-dimensional structures, which enhance protein interactions, aid solubility and facilitate molecular modelling. However, synthetic methodology for the spiro-functionalisation of important classes of penicillin and cephalosporin β-lactam antibiotics is comparatively limited. We report a novel method for the generation of spiro-cephalosporin compounds through a Michael-type addition to the dihydrothiazine ring. Coupling of a range of catechols is achieved under mildly basic conditions (K2CO3, DMF), giving the stereoselective formation of spiro-cephalosporins (d.r. 14:1 to 8:1) in moderate to good yields (28-65%).
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Affiliation(s)
- Alan X. Zhao
- EaStChem School of Chemistry, The University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, UK;
| | - Louise E. Horsfall
- Institute of Quantitative Biology, Biochemistry, and Biotechnology, School of Biological Science, The University of Edinburgh, Roger Land Building, Alexander Crum Brown Road, Edinburgh EH9 3FF, UK;
| | - Alison N. Hulme
- EaStChem School of Chemistry, The University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, UK;
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Synthesis, structure characterization and quantum chemical study on relationship between structure and antioxidant properties of novel Schiff bases bearing (thio)/carbohydrazones. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04576-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Abstract
Cullin-RING (really intersting new gene) E3 ubiquitin ligases (CRLs) are the largest E3 family and direct numerous protein substrates for proteasomal degradation, thereby impacting a myriad of physiological and pathological processes including cancer. To date, there are no reported small-molecule inhibitors of the catalytic activity of CRLs. Here, we describe high-throughput screening and medicinal chemistry optimization efforts that led to the identification of two compounds, 33-11 and KH-4-43, which inhibit E3 CRL4 and exhibit antitumor potential. These compounds bind to CRL4's core catalytic complex, inhibit CRL4-mediated ubiquitination, and cause stabilization of CRL4's substrate CDT1 in cells. Treatment with 33-11 or KH-4-43 in a panel of 36 tumor cell lines revealed cytotoxicity. The antitumor activity was validated by the ability of the compounds to suppress the growth of human tumor xenografts in mice. Mechanistically, the compounds' cytotoxicity was linked to aberrant accumulation of CDT1 that is known to trigger apoptosis. Moreover, a subset of tumor cells was found to express cullin4 proteins at levels as much as 70-fold lower than those in other tumor lines. The low-cullin4-expressing tumor cells appeared to exhibit increased sensitivity to 33-11/KH-4-43, raising a provocative hypothesis for the role of low E3 abundance as a cancer vulnerability.
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11
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Huang Z, Ji X, Lumb JP. Total Synthesis of ( S)-Cularine via Nucleophilic Substitution on a Catechol. Org Lett 2021; 23:236-241. [PMID: 33325233 DOI: 10.1021/acs.orglett.0c04000] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Catechols are part of many essential chemicals and are valuable, typically nucleophilic intermediates used in synthesis. Here we describe an unexpected transformation in which they play the role of the electrophile in a formal nucleophilic aromatic substitution. We made this discovery while studying a seven-membered dioxepin ring formation during a synthesis of the benzyltetrahydroisoquinoline (S)-cularine. We suggest a chain mechanism for this new transformation that is triggered by molecular oxygen and that propagates an electrophilic ortho-quinone.
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Affiliation(s)
- Zheng Huang
- Department of Chemistry, McGill University, Montreal, Quebec H3A 0B8, Canada
| | - Xiang Ji
- Department of Chemistry, McGill University, Montreal, Quebec H3A 0B8, Canada
| | - Jean-Philip Lumb
- Department of Chemistry, McGill University, Montreal, Quebec H3A 0B8, Canada
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12
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Gold(I)/Gold(III) Catalysis that Merges Oxidative Addition and π‐Alkene Activation. Angew Chem Int Ed Engl 2020; 59:16625-16630. [DOI: 10.1002/anie.202006074] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/19/2020] [Indexed: 01/12/2023]
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Rigoulet M, Thillaye du Boullay O, Amgoune A, Bourissou D. Gold(I)/Gold(III) Catalysis that Merges Oxidative Addition and π‐Alkene Activation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Mathilde Rigoulet
- CNRS/Université Toulouse III—Paul SabatierLaboratoire, Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069) 118 Route de Narbonne 31062 Toulouse Cedex 09 France
| | - Olivier Thillaye du Boullay
- CNRS/Université Toulouse III—Paul SabatierLaboratoire, Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069) 118 Route de Narbonne 31062 Toulouse Cedex 09 France
| | - Abderrahmane Amgoune
- CNRS/Université Toulouse III—Paul SabatierLaboratoire, Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069) 118 Route de Narbonne 31062 Toulouse Cedex 09 France
| | - Didier Bourissou
- CNRS/Université Toulouse III—Paul SabatierLaboratoire, Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069) 118 Route de Narbonne 31062 Toulouse Cedex 09 France
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Zhou Y, Oh MH, Kim YJ, Kim EY, Kang J, Chung S, Ju C, Kim WK, Lee K. Metabolism and Pharmacokinetics of SP-8356, a Novel (1 S)-(-)-Verbenone Derivative, in Rats and Dogs and Its Implications in Humans. Molecules 2020; 25:molecules25081775. [PMID: 32294954 PMCID: PMC7221793 DOI: 10.3390/molecules25081775] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/03/2020] [Accepted: 04/09/2020] [Indexed: 01/04/2023] Open
Abstract
(1S,5R)-4-((E)-3,4-dihydroxy-5-methoxystryryl)-6,6-dimethylbicylco[3.1.1]hept-3-en-2-one (SP-8356) is a novel (1S)-(−)-verbenone derivative that is currently in preclinical development for the treatment of ischemic stroke and atherosclerosis. This report aimed at characterization of the metabolism and pharmacokinetic properties of SP-8356. Following intravenous dose in rats and dogs, plasma concentrations of SP-8356 declined rapidly with high clearance (CL) and short half-life; after oral administration in both species, its plasma levels were below the quantitation limit. Fourteen circulating metabolites, formed by mono-oxygenation, demethylation, glucuronidation, catechol O-methylation, sulfation and oxidation (bioactivation) followed by glutathione (GSH) conjugation, were tentatively identified in both species. Urinary excretion of SP-8356 appeared to be minimal in rats, compared to its metabolites. GSH conjugate of SP-8356 was also formed during incubation with rat liver S9 fraction consistent with oxidative bioactivation; this bioactivation was almost completely inhibited by the cofactors for glucuronidation, sulfation and methylation, indicating that it may be abolished by competing metabolic reactions in the body. The human pharmacokinetics of SP-8356 was predicted to be similar to that of the animals based on the current in vitro metabolic stability results. In summary, rapid phase II metabolism appears to be mainly responsible for its suboptimal pharmacokinetics, such as high CL and low oral absorption. Because of competing metabolic reactions, potential safety risks related to SP-8356 bioactivation may be low.
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Affiliation(s)
- Yuanyuan Zhou
- College of pharmacy, Korea University, Sejong 30019, Korea
| | - Mun Hwan Oh
- College of pharmacy, Korea University, Sejong 30019, Korea
| | - Yeon Joon Kim
- College of pharmacy, Korea University, Sejong 30019, Korea
| | - Eun-yeong Kim
- College of pharmacy, Korea University, Sejong 30019, Korea
| | - Jinhong Kang
- College of pharmacy, Korea University, Sejong 30019, Korea
| | - Sung Chung
- Research Headquarters, Shin Poong Pharm. Co., Ltd., Ansan, Gyeonggi 15610, Korea
| | - Chung Ju
- Research Headquarters, Shin Poong Pharm. Co., Ltd., Ansan, Gyeonggi 15610, Korea
| | - Won-Ki Kim
- Departments of Biomedical Sciences and Neuroscience, College of Medicine, Korea University, Seoul 02841, Korea
- Institute of Inflammation Control, Korea University, Seoul 02841, Korea
| | - Kiho Lee
- College of pharmacy, Korea University, Sejong 30019, Korea
- Institute of Pharmaceutical Science and Translational Research, Korea University, Sejong 30019, Korea
- Biomedical Research Center, Korea University Guro Hospital, Seoul 08308, Korea
- Correspondence: ; Tel.: +82-44-860-1616
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Maini Rekdal V, Nol Bernadino P, Luescher MU, Kiamehr S, Le C, Bisanz JE, Turnbaugh PJ, Bess EN, Balskus EP. A widely distributed metalloenzyme class enables gut microbial metabolism of host- and diet-derived catechols. eLife 2020; 9:e50845. [PMID: 32067637 PMCID: PMC7028382 DOI: 10.7554/elife.50845] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 01/03/2020] [Indexed: 12/23/2022] Open
Abstract
Catechol dehydroxylation is a central chemical transformation in the gut microbial metabolism of plant- and host-derived small molecules. However, the molecular basis for this transformation and its distribution among gut microorganisms are poorly understood. Here, we characterize a molybdenum-dependent enzyme from the human gut bacterium Eggerthella lenta that dehydroxylates catecholamine neurotransmitters. Our findings suggest that this activity enables E. lenta to use dopamine as an electron acceptor. We also identify candidate dehydroxylases that metabolize additional host- and plant-derived catechols. These dehydroxylases belong to a distinct group of largely uncharacterized molybdenum-dependent enzymes that likely mediate primary and secondary metabolism in multiple environments. Finally, we observe catechol dehydroxylation in the gut microbiotas of diverse mammals, confirming the presence of this chemistry in habitats beyond the human gut. These results suggest that the chemical strategies that mediate metabolism and interactions in the human gut are relevant to a broad range of species and habitats.
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Affiliation(s)
- Vayu Maini Rekdal
- Department of Chemistry and Chemical BiologyHarvard UniversityCambridgeUnited States
| | - Paola Nol Bernadino
- Department of Chemistry and Molecular BiologyUniversity of California, IrvineIrvineUnited States
- Department of Chemistry and Molecular BiochemistryUniversity of California, IrvineIrvineUnited States
| | - Michael U Luescher
- Department of Chemistry and Chemical BiologyHarvard UniversityCambridgeUnited States
| | - Sina Kiamehr
- Department of Chemistry and Chemical BiologyHarvard UniversityCambridgeUnited States
| | - Chip Le
- Department of Chemistry and Chemical BiologyHarvard UniversityCambridgeUnited States
| | - Jordan E Bisanz
- Department of Microbiology and ImmunologyUniversity of California, San FranciscoSan FranciscoUnited States
| | - Peter J Turnbaugh
- Department of Microbiology and ImmunologyUniversity of California, San FranciscoSan FranciscoUnited States
- Chan Zuckerberg BiohubSan FranciscoUnited States
| | - Elizabeth N Bess
- Department of Chemistry and Molecular BiologyUniversity of California, IrvineIrvineUnited States
- Department of Chemistry and Molecular BiochemistryUniversity of California, IrvineIrvineUnited States
| | - Emily P Balskus
- Department of Chemistry and Chemical BiologyHarvard UniversityCambridgeUnited States
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Mosammam MK, Ganjali MR, Habibi-Kool-Gheshlaghi M, Faridbod F. Electroanalysis of Catecholamine Drugs using Graphene Modified Electrodes. CURR ANAL CHEM 2019. [DOI: 10.2174/1573411014666180917113206] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Background:
Catecholamine drugs are a family of electroactive pharmaceutics, which are
widely analyzed through electrochemical methods. However, for low level online determination and
monitoring of these compounds, which is very important for clinical and biological studies, modified
electrodes having high signal to noise ratios are needed. Numerous materials including nanomaterials
have been widely used as electrode modifies for these families during the years. Among them, graphene
and its family, due to their remarkable properties in electrochemistry, were extensively used in
modification of electrochemical sensors.
Objective:
In this review, working electrodes which have been modified with graphene and its derivatives
and applied for electroanalyses of some important catecholamine drugs are considered.
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Affiliation(s)
- Mahya Karami Mosammam
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Mohammad Reza Ganjali
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Mona Habibi-Kool-Gheshlaghi
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Farnoush Faridbod
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran
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Lin Y, Ye J, Zhang W, Gao Y, Chen H. Catalytic Oxidative Coupling Cyclization for Construction of Benzofuroindolenines under Mild Reaction Conditions. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801184] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yuqi Lin
- College of ChemistryFuzhou University, Fuzhou Fujian 350116 People's Republic of China
| | - Jinxiang Ye
- College of ChemistryFuzhou University, Fuzhou Fujian 350116 People's Republic of China
| | - Wenting Zhang
- College of ChemistryFuzhou University, Fuzhou Fujian 350116 People's Republic of China
| | - Yu Gao
- College of ChemistryFuzhou University, Fuzhou Fujian 350116 People's Republic of China
| | - Haijun Chen
- College of ChemistryFuzhou University, Fuzhou Fujian 350116 People's Republic of China
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NEMATOLLAHI DAVOOD, GHASEMI FATEMEH, KHAZALPOUR SADEGH, VARMAGHANI FAHIMEH. Kinetic study on electrochemical oxidation of catechols in the presence of cycloheptylamine and aniline: Experiments and digital simulation. J CHEM SCI 2016. [DOI: 10.1007/s12039-016-1193-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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19
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Balasubramanian A, Manzano M, Teramoto T, Pilankatta R, Padmanabhan R. High-throughput screening for the identification of small-molecule inhibitors of the flaviviral protease. Antiviral Res 2016; 134:6-16. [PMID: 27539384 DOI: 10.1016/j.antiviral.2016.08.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 08/13/2016] [Indexed: 01/18/2023]
Abstract
The mosquito-borne dengue virus serotypes 1-4 (DENV1-4) and West Nile virus (WNV) cause serious illnesses worldwide associated with considerable morbidity and mortality. According to the World Health Organization (WHO) estimates, there are about 390 million infections every year leading to ∼500,000 dengue haemorrhagic fever (DHF) cases and ∼25,000 deaths, mostly among children. Antiviral therapies could reduce the morbidity and mortality associated with flaviviral infections, but currently there are no drugs available for treatment. In this study, a high-throughput screening assay for the Dengue protease was employed to screen ∼120,000 small molecule compounds for identification of inhibitors. Eight of these inhibitors have been extensively analyzed for inhibition of the viral protease in vitro and cell-based viral replication using Renilla luciferase reporter replicon, infectivity (plaque) and cytotoxicity assays. Three of these compounds were identified as potent inhibitors of DENV and WNV proteases, and viral replication of DENV2 replicon and infectious RNA. Fluorescence quenching, kinetic analysis and molecular modeling of these inhibitors into the structure of NS2B-NS3 protease suggest a mode of inhibition for three compounds that they bind to the substrate binding pocket.
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Affiliation(s)
| | - Mark Manzano
- Department of Microbiology and Immunology, Georgetown University, Washington, D.C., USA
| | - Tadahisa Teramoto
- Department of Microbiology and Immunology, Georgetown University, Washington, D.C., USA
| | - Rajendra Pilankatta
- Department of Microbiology and Immunology, Georgetown University, Washington, D.C., USA
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20
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Tang GY. Why Polyphenols have Promiscuous Actions? An Investigation by Chemical Bioinformatics. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601100525] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Despite their diverse pharmacological effects, polyphenols are poor for use as drugs, which have been traditionally ascribed to their low bioavailability. However, Baell and co-workers recently proposed that the redox potential of polyphenols also plays an important role in this, because redox reactions bring promiscuous actions on various protein targets and thus produce non-specific pharmacological effects. To investigate whether the redox reactivity behaves as a critical factor in polyphenol promiscuity, we performed a chemical bioinformatics analysis on the structure-activity relationships of twenty polyphenols. It was found that the gene expression profiles of human cell lines induced by polyphenols were not correlated with the presence or not of redox moieties in the polyphenols, but significantly correlated with their molecular structures. Therefore, it is concluded that the promiscuous actions of polyphenols are likely to result from their inherent structural features rather than their redox potential.
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Affiliation(s)
- Guang-Yan Tang
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, P. R. China
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21
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Cortez A, de Ávila RI, da Cunha CRM, Santos AP, Menegatti R, Rezende KR, Valadares MC. 4-Nerolidylcatechol analogues as promising anticancer agents. Eur J Pharmacol 2015; 765:517-24. [DOI: 10.1016/j.ejphar.2015.08.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 08/14/2015] [Accepted: 08/17/2015] [Indexed: 01/30/2023]
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Hujaya SD, Engbersen JFJ, Paulusse JMJ. Multilayered Thin Films from Boronic Acid-Functional Poly(amido amine)s As Drug-Releasing Surfaces. Pharm Res 2015; 32:3732-45. [PMID: 26113233 PMCID: PMC4596910 DOI: 10.1007/s11095-015-1734-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 06/04/2015] [Indexed: 11/04/2022]
Abstract
Purpose To evaluate the potential of poly(amido amine)-based multilayered thin films in surface mediated drug release. Methods Multilayered thin films were prepared from copolymers of phenylboronic acid-functional poly(amido amine)s and chondroitin sulfate (ChS) in the presence of Alizarin Red S (ARS) as a reporter molecule. Multilayer buildup and ARS incorporation were evaluated with UV–vis spectroscopy. Glucose responsiveness of the multilayers was investigated. Finally, cellular uptake of ARS by COS-7 cells grown on the films was assessed. Results Multilayers based on alcohol containing polymers (ABOL-BA-PAA#ChS + ARS) displayed higher ARS incorporation than multilayers based on amine-containing polymers (DAB-BA-PAA#ChS + ARS). At physiological pH, a swift initial release of up to ~40% of the ARS content was observed during the first 12 h of incubation, followed by a much slower, gradual release of ARS. The multilayers were further evaluated by culturing COS-7 cells on top of multilayer-coated well plates. Cellular uptake of the fluorescent ARS-boronate ester was quantified through flow cytometry, and a maximum uptake of up to 30% was observed. Confocal microscopy confirmed the presence of ARS-boronate ester-containing particles in the nuclei of cells. Conclusions The investigated multilayered thin films are effective in surface-mediated delivery of the model compound ARS. These multilayered surfaces are promising as drug-releasing delivery surface for coating stents, prostheses, and other implants. ᅟ ![]()
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Affiliation(s)
- Sry D Hujaya
- Department of Controlled Drug Delivery, MIRA Institute for Biomedical Technology and Technical Medicine, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
| | - Johan F J Engbersen
- Department of Controlled Drug Delivery, MIRA Institute for Biomedical Technology and Technical Medicine, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands.
| | - Jos M J Paulusse
- Department of Controlled Drug Delivery, MIRA Institute for Biomedical Technology and Technical Medicine, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands.
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23
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The Toluene o-Xylene Monooxygenase Enzymatic Activity for the Biosynthesis of Aromatic Antioxidants. PLoS One 2015; 10:e0124427. [PMID: 25915063 PMCID: PMC4411060 DOI: 10.1371/journal.pone.0124427] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 03/13/2015] [Indexed: 01/06/2023] Open
Abstract
Monocyclic phenols and catechols are important antioxidant compounds for the food and pharmaceutic industries; their production through biotransformation of low-added value starting compounds is of major biotechnological interest. The toluene o-xylene monooxygenase (ToMO) from Pseudomonas sp. OX1 is a bacterial multicomponent monooxygenase (BMM) that is able to hydroxylate a wide array of aromatic compounds and has already proven to be a versatile biochemical tool to produce mono- and dihydroxylated derivatives of aromatic compounds. The molecular determinants of its regioselectivity and substrate specificity have been thoroughly investigated, and a computational strategy has been developed which allows designing mutants able to hydroxylate non-natural substrates of this enzyme to obtain high-added value compounds of commercial interest. In this work, we have investigated the use of recombinant ToMO, expressed in cells of Escherichia coli strain JM109, for the biotransformation of non-natural substrates of this enzyme such as 2-phenoxyethanol, phthalan and 2-indanol to produce six hydroxylated derivatives. The hydroxylated products obtained were identified, isolated and their antioxidant potential was assessed both in vitro, using the DPPH assay, and on the rat cardiomyoblast cell line H9c2. Incubation of H9c2 cells with the hydroxylated compounds obtained from ToMO-catalyzed biotransformation induced a differential protective effect towards a mild oxidative stress induced by the presence of sodium arsenite. The results obtained confirm once again the versatility of the ToMO system for oxyfunctionalization reactions of biotechnological importance. Moreover, the hydroxylated derivatives obtained possess an interesting antioxidant potential that encourages the use of the enzyme for further functionalization reactions and their possible use as scaffolds to design novel bioactive molecules.
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24
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Prior M, Chiruta C, Currais A, Goldberg J, Ramsey J, Dargusch R, Maher PA, Schubert D. Back to the future with phenotypic screening. ACS Chem Neurosci 2014; 5:503-13. [PMID: 24902068 DOI: 10.1021/cn500051h] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
There are no disease-modifying drugs for any old age associated neurodegenerative disease or stroke. This is at least in part due to the failure of drug developers to recognize that the vast majority of neurodegenerative diseases arise from a confluence of multiple toxic insults that accumulate during normal aging and interact with genetic and environmental risk factors. Thus, it is unlikely that the current single target approach based upon rare dominant mutations or even a few preselected targets is going to yield useful drugs for these conditions. Therefore, the identification of drug candidates for neurodegeneration should be based upon their efficacy in phenotypic screening assays that reflect the biology of the aging brain, not a single, preselected target. It is argued here that this approach to drug discovery is the most likely to produce safe and effective drugs for neurodegenerative diseases.
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Affiliation(s)
- Marguerite Prior
- Cellular
Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037-1002, United States
| | - Chandramouli Chiruta
- Cellular
Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037-1002, United States
| | - Antonio Currais
- Cellular
Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037-1002, United States
| | - Josh Goldberg
- Cellular
Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037-1002, United States
| | - Justin Ramsey
- Cellular
Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037-1002, United States
| | - Richard Dargusch
- Cellular
Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037-1002, United States
| | - Pamela A. Maher
- Cellular
Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037-1002, United States
| | - David Schubert
- Cellular
Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037-1002, United States
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25
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26
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Active site and allosteric inhibitors of the ribonuclease H activity of HIV reverse transcriptase. Future Med Chem 2014; 5:2127-39. [PMID: 24261890 DOI: 10.4155/fmc.13.178] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Despite the wealth of information available for the reverse transcriptase (RT)-associated ribonuclease H (RNaseH) domain of lentiviruses, gammaretroviruses and long terminal repeat containing retrotransposons, exploiting this information in the form of an RNaseH inhibitor with high specificity and low cellular toxicity has been disappointing. However, it is now becoming increasingly evident that the two-subunit HIV-1 RT is a highly versatile enzyme, undergoing major structural alterations in order to interact with, position and ultimately hydrolyze the RNA component of an RNA/DNA hybrid. Thus, in addition to targeting the RNaseH active site, identifying small molecules that bind elsewhere and disrupt catalysis allosterically by impairing conformational flexibility is gaining increased attention. This review summarizes current progress towards development of both active site and allosteric RNaseH inhibitors.
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27
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Spicer T, Fernandez-Vega V, Chase P, Scampavia L, To J, Dalton JP, Da Silva FL, Skinner-Adams TS, Gardiner DL, Trenholme KR, Brown CL, Ghosh P, Porubsky P, Wang JL, Whipple DA, Schoenen FJ, Hodder P. Identification of Potent and Selective Inhibitors of the Plasmodium falciparum M18 Aspartyl Aminopeptidase (PfM18AAP) of Human Malaria via High-Throughput Screening. ACTA ACUST UNITED AC 2014; 19:1107-15. [PMID: 24619116 DOI: 10.1177/1087057114525852] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Accepted: 02/04/2014] [Indexed: 11/16/2022]
Abstract
The target of this study, the PfM18 aspartyl aminopeptidase (PfM18AAP), is the only AAP present in the genome of the malaria parasite Plasmodium falciparum. PfM18AAP is a metallo-exopeptidase that exclusively cleaves N-terminal acidic amino acids glutamate and aspartate. It is expressed in parasite cytoplasm and may function in concert with other aminopeptidases in protein degradation, of, for example, hemoglobin. Previous antisense knockdown experiments identified a lethal phenotype associated with PfM18AAP, suggesting that it is a valid target for new antimalaria therapies. To identify inhibitors of PfM18AAP function, a fluorescence enzymatic assay was developed using recombinant PfM18AAP enzyme and a fluorogenic peptide substrate (H-Glu-NHMec). This was screened against the Molecular Libraries Probe Production Centers Network collection of ~292,000 compounds (the Molecular Libraries Small Molecule Repository). A cathepsin L1 (CTSL1) enzyme-based assay was developed and used as a counter screen to identify compounds with nonspecific activity. Enzymology and phenotypic assays were used to determine mechanism of action and efficacy of selective and potent compounds identified from high-throughput screening. Two structurally related compounds, CID 6852389 and CID 23724194, yielded micromolar potency and were inactive in CTSL1 titration experiments (IC50>59.6 µM). As measured by the K(i) assay, both compounds demonstrated micromolar noncompetitive inhibition in the PfM18AAP enzyme assay. Both CID 6852389 and CID 23724194 demonstrated potency in malaria growth assays (IC504 µM and 1.3 µM, respectively).
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Affiliation(s)
- Timothy Spicer
- The Scripps Research Institute Molecular Screening Center, Scripps Florida, Jupiter, FL, USA
| | - Virneliz Fernandez-Vega
- The Scripps Research Institute Molecular Screening Center, Scripps Florida, Jupiter, FL, USA
| | - Peter Chase
- The Scripps Research Institute Molecular Screening Center, Scripps Florida, Jupiter, FL, USA
| | - Louis Scampavia
- The Scripps Research Institute Molecular Screening Center, Scripps Florida, Jupiter, FL, USA
| | - Joyce To
- Institute for Biotechnology of Infectious Diseases, University of Technology Sydney, Sydney, Australia
| | - John P Dalton
- Institute for Biotechnology of Infectious Diseases, University of Technology Sydney, Sydney, Australia Institute of Parasitology, McGill University, Quebec, Canada
| | - Fabio L Da Silva
- Malaria Biology Laboratory, The Queensland Institute of Medical Research, Brisbane, Australia
| | - Tina S Skinner-Adams
- Malaria Biology Laboratory, The Queensland Institute of Medical Research, Brisbane, Australia
| | - Donald L Gardiner
- Malaria Biology Laboratory, The Queensland Institute of Medical Research, Brisbane, Australia
| | - Katharine R Trenholme
- Malaria Biology Laboratory, The Queensland Institute of Medical Research, Brisbane, Australia
| | - Christopher L Brown
- School of Biomolecular and Physical Sciences, Griffith University, Brisbane, Australia
| | - Partha Ghosh
- The University of Kansas Specialized Chemistry Center, Lawrence, KS, USA
| | - Patrick Porubsky
- The University of Kansas Specialized Chemistry Center, Lawrence, KS, USA
| | - Jenna L Wang
- The University of Kansas Specialized Chemistry Center, Lawrence, KS, USA
| | - David A Whipple
- The University of Kansas Specialized Chemistry Center, Lawrence, KS, USA
| | - Frank J Schoenen
- The University of Kansas Specialized Chemistry Center, Lawrence, KS, USA
| | - Peter Hodder
- The Scripps Research Institute Molecular Screening Center, Scripps Florida, Jupiter, FL, USA
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Raynova Y, Doumanova L, Idakieva KN. Phenoloxidase Activity of Helix aspersa Maxima (Garden Snail, Gastropod) Hemocyanin. Protein J 2013; 32:609-18. [DOI: 10.1007/s10930-013-9523-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Bond dissociation free energy as a general parameter for flavonoid radical scavenging activity. Food Chem 2013; 141:1562-70. [DOI: 10.1016/j.foodchem.2013.03.072] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 03/19/2013] [Accepted: 03/20/2013] [Indexed: 11/22/2022]
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Chan LY, Meng X, Kim S. ortho-Acetoxylation of Phosphonic and Phosphoric Monoacids via Pd(II) Catalysis. J Org Chem 2013; 78:8826-32. [DOI: 10.1021/jo4011188] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Li Yan Chan
- Division of Chemistry and Biological Chemistry, School of
Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Xiangjian Meng
- Division of Chemistry and Biological Chemistry, School of
Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Sunggak Kim
- Division of Chemistry and Biological Chemistry, School of
Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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Deng H, Fang Y. The Three Catecholics Benserazide, Catechol and Pyrogallol are GPR35 Agonists. Pharmaceuticals (Basel) 2013; 6:500-9. [PMID: 24276120 PMCID: PMC3816702 DOI: 10.3390/ph6040500] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 03/20/2013] [Accepted: 04/01/2013] [Indexed: 11/16/2022] Open
Abstract
Nearly 1% of all clinically used drugs are catecholics, a family of catechol-containing compounds. Using label-free dynamic mass redistribution and Tango β-arrestin translocation assays, we show that several catecholics, including benserazide, catechol, 3-methoxycatechol, pyrogallol, (+)-taxifolin and fenoldopam, display agonistic activity against GPR35.
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Affiliation(s)
- Huayun Deng
- Biochemical Technologies, Science and Technology Division, Corning Inc., Corning, NY 14831, USA.
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33
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Nambiar SR, Aneesh PK, Rao TP. Ultrasensitive voltammetric determination of catechol at a gold atomic cluster/poly(3,4-ethylenedioxythiophene) nanocomposite electrode. Analyst 2013; 138:5031-8. [DOI: 10.1039/c3an00518f] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Lu R, Yang D, Cui D, Wang Z, Guo L. Egg white-mediated green synthesis of silver nanoparticles with excellent biocompatibility and enhanced radiation effects on cancer cells. Int J Nanomedicine 2012; 7:2101-7. [PMID: 22619546 PMCID: PMC3356171 DOI: 10.2147/ijn.s29762] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
A simple, cost-effective, and environmentally friendly approach to the aqueous-phase synthesis of silver (Ag) nanoparticles was demonstrated using silver nitrate (AgNO(3)) and freshly extracted egg white. The bio-conjugates were characterized by UV-visible spectroscopy, transmission electron microscopy, Fourier transform infrared spectrometry, and dynamic light scattering. These results indicated that biomolecule-coated Ag nanoparticles are predominantly spherical in shape with an average size of 20 nm. The proteins of egg white, which have different functional groups, played important roles in reducing Ag(+) and maintaining product attributes such as stability and dispersity. In vitro cytotoxicity assays showed that these Ag-protein bio-conjugates showed good biocompatibility with mouse fibroblast cell lines 3T3. Furthermore, X-ray irradiation tests on 231 tumor cells suggested that the biocompatible Ag-protein bio-conjugates enhanced the efficacy of irradiation, and thus may be promising candidates for use during cancer radiation therapy.
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Affiliation(s)
- Renquan Lu
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, Shanghai, People’s Republic of China
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35
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Al-Amiery AA, Al-Majedy YK, Ibrahim HH, Al-Tamimi AA. Antioxidant, antimicrobial, and theoretical studies of the thiosemicarbazone derivative Schiff base 2-(2-imino-1-methylimidazolidin-4-ylidene)hydrazinecarbothioamide (IMHC). Org Med Chem Lett 2012; 2:4. [PMID: 22373542 PMCID: PMC3342846 DOI: 10.1186/2191-2858-2-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Accepted: 02/02/2012] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Adverse antimicrobial activities of thiosemicarbazone (TSC) and Schiff base derivatives have widely been studied by using different kinds of microbes, in addition different methods were used to assay the antioxidant activities using DPPH, peroxids, or ntrosyl methods. However, there are no studies describing the synthesis of TSC derived from creatinine. RESULTS In this study, 2-(2-imino-1-methylimidazolidin-4-ylidene)hydrazinecarbothioamide (IMHC) was synthesized by the reaction of creatinine with thiosemicarbazide. The novel molecule was characterized by FT-IR, UV-VIS, and NMR spectra in addition of the elemental analysis. The free radical scavenging ability of the IMHC was determined by it interaction with the stable-free radical 2,2"-diphenyl-1-picrylhydrazyl (or nitric oxide or hydrogen peroxide) and showed encouraging antioxidant activities. Density functional theory calculations of the IMHC performed using molecular structures with optimized geometries. Molecular orbital calculations provide a detailed description of the orbitals, including spatial characteristics, nodal patterns, and the contributions of individual atoms. Highest occupied molecular orbital-lowest unoccupied molecular orbital energies and structures are shown. CONCLUSIONS IMHC shows considerable antibacterial and antifungal activities. The free radical scavenging activity of synthesized compound was screened for in vitro antioxidant activity.
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Affiliation(s)
- Ahmed A Al-Amiery
- Biotechnology Division, Applied Science Department, University of Technology, Baghdad 10066, Iraq.
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Laccase biosensor using magnetic multiwalled carbon nanotubes and chitosan/silica hybrid membrane modified magnetic carbon paste electrode. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/s11771-011-0913-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bak A, Magdziarz T, Kurczyk A, Polanski J. Mapping drug architecture by MoStBioDat: rapid screening of intramolecular hydrogen bonded motifs in catechols. Drug Dev Res 2010. [DOI: 10.1002/ddr.20417] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Gómez-Zaleta B, Gómez-Balderas R, Hernández-Trujillo J. Theoretical analysis of hydrogen bonding in catechol–n(H2O) clusters (n = 0…3). Phys Chem Chem Phys 2010; 12:4783-90. [DOI: 10.1039/b922203k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Li XJ, Gao N, Zhang HY. Natural inspirations for antioxidant drug discovery. Drug Discov Today 2009; 14:910-2. [DOI: 10.1016/j.drudis.2009.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2009] [Accepted: 08/11/2009] [Indexed: 10/20/2022]
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Kobayashi A, Konishi GI. Synthesis and analysis of resorcinol-acetone copolymer. Molecules 2009; 14:364-77. [PMID: 19145215 PMCID: PMC6253941 DOI: 10.3390/molecules14010364] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2008] [Revised: 01/06/2009] [Accepted: 01/12/2009] [Indexed: 11/27/2022] Open
Abstract
Synthesis and characterization of resorcinol-acetone copolymer is described. The polymer was prepared by trifluoroacetic acid-catalyzed polymerization of resorcinol with acetone. According to the (1)H-NMR, (13)C-NMR, and MALDI-TOF Mass spectra data, the obtained polymer had three types of repeating units: isopropylidene bridged-resorcinol, chromane ring, and spiro-shaped double chromane ring, indicating that polymerization proceeded via simultaneous addition-condensation and cyclization of resorcinol with acetone. The obtained polymer can be useful not only for the development of plastic materials such as thermosets, adhesives, and coatings but also for the synthesis of biomaterials such as antimicrobial agents, pesticides, and medicines.
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Affiliation(s)
| | - Gen-ichi Konishi
- Department of Organic & Polymeric Materials, Graduate School of Science & Engineering, Tokyo Institute of Technology, SORST, Japan
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MENG XM, ZOU LF, XIE M, FU Y. Strength of C–H Bonds at Nitrogenα-Position:Implication for Metabolic Stability of Nitrogen-containing Drug Molecules. CHINESE J CHEM 2008. [DOI: 10.1002/cjoc.200890147] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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