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Tan Q, Zhao S, Li Y, Jiang J, Tang H, Chen Y, Peng Y, Xie H. Regioselective Difluoromethane sulfonylation and Triflylation of Resorufin Derivatives. Org Lett 2021; 23:8477-8481. [PMID: 34661414 DOI: 10.1021/acs.orglett.1c03192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reported herein is a regioselective difluoromethane sulfonylation or triflylation of resorufin derivatives, which allows easy access to 2-difluoromethane sulfonylated or triflylated resorufin derivatives in good yields. The installation of a difluoromethane sulfonyl group significantly increases the solubility of the chromophore and expands its Stokes shift. A difluoromethane sulfonylated resorufin-based fluorogenic probe proved to be able to image enzyme activity in live cells with a stronger fluorescence signal compared with its resorufin counterpart.
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Affiliation(s)
- Qingwei Tan
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Shuxuan Zhao
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Yuyao Li
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Jialing Jiang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Huiling Tang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Yefeng Chen
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Yan Peng
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Hexin Xie
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
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Grimm C, Lazzarotto M, Pompei S, Schichler J, Richter N, Farnberger JE, Fuchs M, Kroutil W. Oxygen-Free Regioselective Biocatalytic Demethylation of Methyl-phenyl Ethers via Methyltransfer Employing Veratrol- O-demethylase. ACS Catal 2020; 10:10375-10380. [PMID: 32974079 PMCID: PMC7506938 DOI: 10.1021/acscatal.0c02790] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/17/2020] [Indexed: 11/28/2022]
Abstract
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The cleavage of aryl
methyl ethers is a common reaction in chemistry requiring rather harsh
conditions; consequently, it is prone to undesired reactions and lacks
regioselectivity. Nevertheless, O-demethylation of
aryl methyl ethers is a tool to valorize natural and pharmaceutical
compounds by deprotecting reactive hydroxyl moieties. Various oxidative
enzymes are known to catalyze this reaction at the expense of molecular
oxygen, which may lead in the case of phenols/catechols to undesired
side reactions (e.g., oxidation, polymerization). Here an oxygen-independent
demethylation via methyl transfer is presented employing a cobalamin-dependent
veratrol-O-demethylase (vdmB). The biocatalytic demethylation
transforms a variety of aryl methyl ethers with two functional methoxy
moieties either in 1,2-position or in 1,3-position. Biocatalytic reactions
enabled, for instance, the regioselective monodemethylation of substituted
3,4-dimethoxy phenol as well as the monodemethylation of 1,3,5-trimethoxybenzene.
The methyltransferase vdmB was also successfully applied for the regioselective
demethylation of natural compounds such as papaverine and rac-yatein. The approach presented here represents an alternative
to chemical and enzymatic demethylation concepts and allows performing
regioselective demethylation in the absence of oxygen under mild conditions,
representing a valuable extension of the synthetic repertoire to modify
pharmaceuticals and diversify natural products.
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Affiliation(s)
- Christopher Grimm
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstraße 28, 8010 Graz, Austria
| | - Mattia Lazzarotto
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstraße 28, 8010 Graz, Austria
| | - Simona Pompei
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstraße 28, 8010 Graz, Austria
| | - Johanna Schichler
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstraße 28, 8010 Graz, Austria
| | - Nina Richter
- ACIB GmbH, Petersgasse 14, 8010 Graz, Austria, c/o Institute of Chemistry, Heinrichstraße 28, 8010 Graz, Austria
| | - Judith E. Farnberger
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstraße 28, 8010 Graz, Austria
- ACIB GmbH, Petersgasse 14, 8010 Graz, Austria, c/o Institute of Chemistry, Heinrichstraße 28, 8010 Graz, Austria
| | - Michael Fuchs
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstraße 28, 8010 Graz, Austria
| | - Wolfgang Kroutil
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstraße 28, 8010 Graz, Austria
- Field of Excellence BioHealth, University of Graz, 8010 Graz, Austria
- BioTechMed Graz, 8010 Graz, Austria
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Guerret-Legras L, Audibert J, Ojeda IG, Dubacheva G, Miomandre F. Combined SECM-fluorescence microscopy using a water-soluble electrofluorochromic dye as the redox mediator. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.03.069] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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From electrochemistry to enzyme kinetics of cytochrome P450. Biosens Bioelectron 2018; 121:192-204. [PMID: 30218927 DOI: 10.1016/j.bios.2018.08.040] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 08/02/2018] [Accepted: 08/17/2018] [Indexed: 12/23/2022]
Abstract
This review is an attempt to describe advancements in the electrochemistry of cytochrome P450 enzymes (EC 1.14.14.1) and to study molecular aspects and catalytic behavior of enzymatic electrocatalysis. Electroanalysis of cytochrome P450 demonstrates how to translate theoretical laws and equations of classical electrochemistry for the calculation of the kinetic parameters of enzymatic reactions and then translation of kinetic parameters to interpretation of drug-drug interactions. The functional significance of cytochrome P450s (CYPs) includes the metabolism of drugs, foreign chemicals, and endogenic compounds. The pharmaceutical industry needs sensitive and cost-effective systems for screening new drugs and investigation of drug-drug interactions. The development of different types of CYP-based biosensors is now in great demand. This review also highlights the characteristics of electrode processes and electrode properties for optimization of the cytochrome P450 electroanalysis. Electrochemical cytochrome P450-biosensors are the most studied. In this review, we analyzed electrode/cytochrome P450 systems in terms of the mechanisms underlying P450-catalyzed reactions. Screening of potential substrates or inhibitors of cytochromes P450 by means of electrodes were described.
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Chalenko Y, Shumyantseva V, Ermolaeva S, Archakov A. Electrochemistry of Escherichia coli JM109: Direct electron transfer and antibiotic resistance. Biosens Bioelectron 2012; 32:219-23. [DOI: 10.1016/j.bios.2011.12.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Revised: 12/07/2011] [Accepted: 12/08/2011] [Indexed: 11/30/2022]
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Collins AM, Blanchard GJ, Hawkett J, Collison D, Marken F. Liquid|liquid|electrode triple-phase boundary photovoltammetry of pentoxyresorufin in 4-(3-phenylpropyl)pyridine. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6471-6477. [PMID: 21488643 DOI: 10.1021/la2010584] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Voltammetric responses of pentoxyresorufin in 4-(3-phenylpropyl)-pyridine (PPP) microdroplets immersed in aqueous electrolyte are investigated in the absence and in the presence of light. The reduction of pentoxyresorufin to leuco-pentoxyresorufin in the dark is shown to occur in a two-electron, two-proton process sensitive to the aqueous pH and the PPP|aqueous electrolyte interfacial tension. No significant net photoelectrochemical current responses are observed, although transient responses indicative of distinct electron and hole charge carriers are seen in the presence of pentoxyresorufin. EPR evidence confirms the formation of radical intermediates upon illumination. As a coreactant, duroquinone in the PPP microdroplet phase is investigated and also shown to undergo two-electron, two-proton reduction (to duroquinol) without significant photoelectrochemical activity. When investigated in combination, pentoxyresorufin acts as a photocatalyst for the oxidation of duroquinol to duroquinone. Wavelength-resolved photovoltammetry experiments clearly implicate pentoxyresorufin as the primary photoexcited intermediate. The photoelectrochemical mechanism is explained on the basis of the presence of a long-lived (possibly charge-separated) photoexcited intermediate in the PPP microphase. Implications for light-energy harvesting are discussed.
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Shumyantseva VV, Bulko TV, Suprun EV, Chalenko YM, Yu.Vagin M, Rudakov YO, Shatskaya MA, Archakov AI. Electrochemical investigations of cytochrome P450. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2011; 1814:94-101. [DOI: 10.1016/j.bbapap.2010.07.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Revised: 06/22/2010] [Accepted: 07/04/2010] [Indexed: 10/19/2022]
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Karunker I, Morou E, Nikou D, Nauen R, Sertchook R, Stevenson BJ, Paine MJI, Morin S, Vontas J. Structural model and functional characterization of the Bemisia tabaci CYP6CM1vQ, a cytochrome P450 associated with high levels of imidacloprid resistance. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2009; 39:697-706. [PMID: 19716416 DOI: 10.1016/j.ibmb.2009.08.006] [Citation(s) in RCA: 142] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2009] [Revised: 08/12/2009] [Accepted: 08/13/2009] [Indexed: 05/28/2023]
Abstract
The neonicotinoid imidacloprid is one of the most important insecticides worldwide. It is used extensively against the whitefly Bemisia tabaci (Hemiptera: Aleyrodidae), an insect pest of eminent importance globally, which was also the first pest to develop high levels of resistance against imidacloprid and other neonicotinoids in the field. Recent reports indicated that in both the B and Q biotypes of B. tabaci, the resistant phenotype is associated with over-expression of the cytochrome P450 gene CYP6CM1. In this study, molecular docking and dynamic simulations were used to analyze interactions of imidacloprid with the biotype Q variant of the CYP6CM1 enzyme (CYP6CM1vQ). The binding mode with the lowest energy in the enzyme active site, the key amino acids involved (i.e. Phe-130 and Phe-226), and the putative hydroxylation site (lowest distance to carbon 5 of the imidazolidine ring system of imidacloprid) were predicted. Heterologous expression of the CYP6CM1vQ confirmed the accuracy of our predictions and demonstrated that the enzyme catalyses the hydroxylation of imidacloprid to its less toxic 5-hydroxy form (K(cat) = 3.2 pmol/min/pmol P450, K(m) = 36 microM). The data identify CYP6CM1vQ as a principle target for inhibitor design, aimed at inactivating insecticide-metabolizing P450s in natural insect pest populations.
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Affiliation(s)
- Iris Karunker
- Department of Entomology, Faculty of Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel
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Inceoglu AB, Waite TD, Christiansen JA, McAbee RD, Kamita SG, Hammock BD, Cornel AJ. A rapid luminescent assay for measuring cytochrome P450 activity in individual larval Culex pipiens complex mosquitoes (Diptera: Culicidae). JOURNAL OF MEDICAL ENTOMOLOGY 2009; 46:83-92. [PMID: 19198521 PMCID: PMC3522461 DOI: 10.1603/033.046.0111] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Multiple assays are available to measure P450 activity in insects, including mosquitoes; however, each of these assays has drawbacks in terms of the number of mosquitoes required, specificity, sensitivity, cost, and/or time required to prepare active enzyme homogenates. In this study, a commercially available luminescent assay, P450-Glo, was modified and evaluated to measure P450 activity from the gut of a single larva after removal of the gut contents. We also compared this assay to an earlier developed fluorescent assay. After optimization of assay conditions, the P450-Glo assay held considerable promise to be used as an effective, inexpensive, high-throughput, and sensitive screening assay to measure P450 activities in single mosquitoes. Furthermore, we tested the utility of the single gut assay using the pyrethroid resistant Marin strain of Culex pipiens pipiens form molestus and the pyrethroid sensitive CQ-1 strain of Cx. pipiens quinqefasciatus. We observed on average 1.8-fold higher levels of P450 activity in the resistant mosquitoes in comparison to the sensitive mosquitoes. Additionally, consistent with our previous findings, distribution plots of P450 activity showed 33% of individual Marin mosquitoes had higher P450 activities than the highest activity displayed by a CQ-1 mosquito. The assay platform is highly flexible in terms of choice of tissue, method of preparation, isozyme specificity, and sample quantity and thus could easily be adapted to be used for other arthropod species.
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Affiliation(s)
- A. B. Inceoglu
- Department of Entomology, University of California, Davis, CA 95616
| | - T. D. Waite
- Department of Entomology, University of California, Davis, CA 95616
- Mosquito Control Laboratory, Department of Entomology, University of California, 9240 Riverbend Ave., Parlier, CA 93648
| | - J. A. Christiansen
- Mosquito Control Laboratory, Department of Entomology, University of California, 9240 Riverbend Ave., Parlier, CA 93648
| | - R. D. McAbee
- Mosquito Control Laboratory, Department of Entomology, University of California, 9240 Riverbend Ave., Parlier, CA 93648
| | - S. G. Kamita
- Department of Entomology, University of California, Davis, CA 95616
- Mosquito Control Laboratory, Department of Entomology, University of California, 9240 Riverbend Ave., Parlier, CA 93648
| | - B. D. Hammock
- Mosquito Control Laboratory, Department of Entomology, University of California, 9240 Riverbend Ave., Parlier, CA 93648
- Cancer Research Center, University of California, Davis, CA 95616
| | - A. J. Cornel
- Mosquito Control Laboratory, Department of Entomology, University of California, 9240 Riverbend Ave., Parlier, CA 93648
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McCart C, Ffrench-Constant RH. Dissecting the insecticide-resistance- associated cytochrome P450 gene Cyp6g1. PEST MANAGEMENT SCIENCE 2008; 64:639-645. [PMID: 18338338 DOI: 10.1002/ps.1567] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
BACKGROUND The cytochrome P450 gene Cyp6g1 is overtranscribed in all field isolates of DDT-resistant Drosophila melanogaster (Meigen) and confers a fitness advantage when inherited via the female. Overtranscription is associated with the insertion of an Accord transposable element into the 5' end of the resistance allele. Here the authors attempt to dissect the transcription of the P450 gene in order to understand why resistance confers an advantage rather than the expected cost. RESULTS Using a transgenic UAS:GAL4 reporter, the authors document the overexpression patterns of green fluorescent protein (GFP) in the fat body, midgut and Malpighian tubules driven by flies carrying the resistant 5' construct. Knockout of Cyp6g1 via RNAi decreases both the level of Cyp6g1 transcript and the metabolism of the artificial substrate MROD (methyl ether resorufin, Sigma M1544). RNAi does not, however, significantly increase the susceptibility of susceptible flies to DDT. Finally, quantification of Cyp6g1 RNA in embryos laid by resistant females indicates that they pass on more Cyp6g1 RNA to their progeny than their susceptible counterparts. CONCLUSION These results help explain why the eggs and larvae of resistant females enjoy a fitness benefit rather than a cost, and suggest that the provisioning of Cyp6g1 RNA to embryos provides a direct, but uncharacterised, fitness benefit.
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Affiliation(s)
- Caroline McCart
- Department of Biology and Biochemistry, University of Bath, Bath BA2 7AY, UK
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Shumyantseva VV, Bulko TV, Rudakov YO, Kuznetsova GP, Samenkova NF, Lisitsa AV, Karuzina II, Archakov AI. Nanoelectrochemistry of cytochrome P450s: Direct electron transfer and electrocatalysis. BIOCHEMISTRY MOSCOW-SUPPLEMENT SERIES B-BIOMEDICAL CHEMISTRY 2007. [DOI: 10.1134/s1990750807040075] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Shumyantseva VV, Bulko TV, Rudakov YO, Kuznetsova GP, Samenkova NF, Lisitsa AV, Karuzina II, Archakov AI. Electrochemical properties of cytochroms P450 using nanostructured electrodes: Direct electron transfer and electro catalysis. J Inorg Biochem 2007; 101:859-65. [PMID: 17376532 DOI: 10.1016/j.jinorgbio.2007.01.015] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2006] [Revised: 01/31/2007] [Accepted: 01/31/2007] [Indexed: 10/23/2022]
Abstract
The present study demonstrates direct electron transfer between cytochromes P450 2B4 (CYP2B4), P450 1A2 (CYP1A2), sterol 14alpha-demethylase (CYP51b1) on the one hand and screen-printed graphite electrodes, modified with gold nanoparticles and didodecyldimethylammonium bromide (DDAB) on the other. Electro detection of heme proteins was possible when 2-200 pmol P450/electrode were adsorbed on the surface of nanostructured electrochemical interfaces. Electron transfer, direct electrochemical reduction and interaction with P450 substrates (oxygen, benzphetamine, and lanosterol) and with P450 inhibitor (ketoconazole) were analyzed using cyclic voltammetry (CV), square wave voltammetry (SWV) differential pulse voltammetry (DPV), and amperometry.
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Affiliation(s)
- V V Shumyantseva
- Institute of Biomedical Chemistry, Russian Academy of Medical Sciences, Pogodinskaya Street, 10, Moscow 119121, Russia.
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