1
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Kim D, Bhattacharjee S, Lam E, Casadevall C, Rodríguez-Jiménez S, Reisner E. Photocatalytic CO 2 Reduction Using Homogeneous Carbon Dots with a Molecular Cobalt Catalyst. Small 2024:e2400057. [PMID: 38519846 DOI: 10.1002/smll.202400057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 02/07/2024] [Indexed: 03/25/2024]
Abstract
A simple and precious-metal free photosystem for the reduction of aqueous CO2 to syngas (CO and H2) is reported consisting of carbon dots (CDs) as the sole light harvester together with a molecular cobalt bis(terpyridine) CO2 reduction co-catalyst. This homogeneous photocatalytic system operates in the presence of a sacrificial electron donor (triethanolamine) in DMSO/H2O solution at ambient temperature. The photocatalytic system exhibits an activity of 7.7 ± 0.2 mmolsyngas gCDs -1 (3.6 ± 0.2 mmolCO gCDs -1 and 4.1 ± 0.1 mmolH2 gCDs -1) after 24 hours of full solar spectrum irradiation (AM 1.5G). Spectroscopic and electrochemical characterization supports that this photocatalytic performance is attributed to a favorable association between CDs and the molecular cobalt catalyst, which results in improved interfacial photoelectron transfer and catalytic mechanism. This work provides a scalable and inexpensive platform for the development of CO2 photoreduction systems using CDs.
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Affiliation(s)
- Dongseok Kim
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Subhajit Bhattacharjee
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Erwin Lam
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Carla Casadevall
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | | | - Erwin Reisner
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
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2
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Velasco-Garcia L, Casadevall C. Bioinspired photocatalytic systems towards compartmentalized artificial photosynthesis. Commun Chem 2023; 6:263. [PMID: 38049562 PMCID: PMC10695942 DOI: 10.1038/s42004-023-01069-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 11/21/2023] [Indexed: 12/06/2023] Open
Abstract
Artificial photosynthesis aims to produce fuels and chemicals from simple building blocks (i.e. water and carbon dioxide) using sunlight as energy source. Achieving effective photocatalytic systems necessitates a comprehensive understanding of the underlying mechanisms and factors that control the reactivity. This review underscores the growing interest in utilizing bioinspired artificial vesicles to develop compartmentalized photocatalytic systems. Herein, we summarize different scaffolds employed to develop artificial vesicles, and discuss recent examples where such systems are used to study pivotal processes of artificial photosynthesis, including light harvesting, charge transfer, and fuel production. These systems offer valuable lessons regarding the appropriate choice of membrane scaffolds, reaction partners and spatial arrangement to enhance photocatalytic activity, selectivity and efficiency. These studies highlight the pivotal role of the membrane to increase the stability of the immobilized reaction partners, generate a suitable local environment, and force proximity between electron donor and acceptor molecules (or catalysts and photosensitizers) to increase electron transfer rates. Overall, these findings pave the way for further development of bioinspired photocatalytic systems for compartmentalized artificial photosynthesis.
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Affiliation(s)
- Laura Velasco-Garcia
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda dels Països Catalans, 16, 43007, Tarragona, Spain
- Department of Physical and Inorganic Chemistry, University Rovira i Virgili (URV), C/ Marcel.lí Domingo, 1, 43007, Tarragona, Spain
| | - Carla Casadevall
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda dels Països Catalans, 16, 43007, Tarragona, Spain.
- Department of Physical and Inorganic Chemistry, University Rovira i Virgili (URV), C/ Marcel.lí Domingo, 1, 43007, Tarragona, Spain.
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3
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Casadevall C, Lage A, Mu M, Greer HF, Antón-García D, Butt JN, Jeuken LJC, Watson GW, García-Melchor M, Reisner E. Size-dependent activity of carbon dots for photocatalytic H 2 generation in combination with a molecular Ni cocatalyst. Nanoscale 2023; 15:15775-15784. [PMID: 37740380 PMCID: PMC10551879 DOI: 10.1039/d3nr03300g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 08/27/2023] [Indexed: 09/24/2023]
Abstract
Carbon dots (CDs) are low-cost light-absorbers in photocatalytic multicomponent systems, but their wide size distribution has hampered rational design and the identification of the factors that lead to their best performance. To address this challenge, we report herein the use of gel filtration size exclusion chromatography to separate amorphous, graphitic, and graphitic N-doped CDs depending on their lateral size to study the effect of their size on photocatalytic H2 evolution with a DuBois-type Ni cocatalyst. Transmission electron microscopy and dynamic light scattering confirm the size-dependent separation of the CDs, whereas UV-vis and fluorescence spectroscopy of the more monodisperse fractions show a distinct response which computational modelling attributes to a complex interplay between CD size and optical properties. A size-dependent effect on the photocatalytic H2 evolution performance of the CDs in combination with a molecular Ni cocatalyst is demonstrated with a maximum activity at approximately 2-3 nm CD diameter. Overall, size separation leads to a two-fold increase in the specific photocatalytic activity for H2 evolution using the monodisperse CDs compared to the as synthesized polydisperse samples, highlighting the size-dependent effect on photocatalytic performance.
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Affiliation(s)
- Carla Casadevall
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
| | - Ava Lage
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
| | - Manting Mu
- School of Chemistry, Trinity College Dublin, College Green, Dublin 2, Ireland
| | - Heather F Greer
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
| | - Daniel Antón-García
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
| | - Julea N Butt
- School of Chemistry and School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK
| | - Lars J C Jeuken
- Leiden Institute of Chemistry, Leiden University, PO Box 9502, 2300 RA, Leiden, The Netherlands
| | - Graeme W Watson
- School of Chemistry, Trinity College Dublin, College Green, Dublin 2, Ireland
| | - Max García-Melchor
- School of Chemistry, Trinity College Dublin, College Green, Dublin 2, Ireland
- CRANN and AMBER Research Centres, College Green, Dublin 2, Ireland.
| | - Erwin Reisner
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
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4
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Moneo-Corcuera A, Nieto-Castro D, Cirera J, Gómez V, Sanjosé-Orduna J, Casadevall C, Molnár G, Bousseksou A, Parella T, Martínez-Agudo JM, Lloret-Fillol J, Pérez-Temprano MH, Ruiz E, Galán-Mascarós JR. Synthesis and characterization of highly diluted polyanionic iron(II) spin crossover systems. STAR Protoc 2023; 4:102394. [PMID: 37392390 PMCID: PMC10338372 DOI: 10.1016/j.xpro.2023.102394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/20/2023] [Accepted: 05/31/2023] [Indexed: 07/03/2023] Open
Abstract
Spin crossover (SCO) complexes, through their reversible spin transition under external stimuli, can work as switchable memory materials. Here, we present a protocol for the synthesis and characterization of a specific polyanionic iron SCO complex and its diluted systems. We describe steps for its synthesis and the determination of crystallographic structure of the SCO complex in diluted systems. We then detail a range of spectroscopic and magnetic techniques employed to monitor the spin state of the SCO complex in both diluted solid- and liquid-state systems. For complete details on the use and execution of this protocol, please refer to Galán-Mascaros et al.1.
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Affiliation(s)
- Andrea Moneo-Corcuera
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, 43007 Tarragona, Spain.
| | - David Nieto-Castro
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, 43007 Tarragona, Spain.
| | - Jordi Cirera
- Departament de Química Inorgànica i Orgànica and Institut de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Verónica Gómez
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Jesús Sanjosé-Orduna
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Carla Casadevall
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, 43007 Tarragona, Spain; Department of Physical and Inorganic Chemistry, University Rovira i Virgili (URV), C/ Marcel.lí Domingo, 1, 43007 Tarragona, Spain
| | - Gábor Molnár
- LCC, CNRS & University of Toulouse (UPS, INPT), 205 route de Narbonne, 31077 Toulouse, France
| | - Azzedine Bousseksou
- LCC, CNRS & University of Toulouse (UPS, INPT), 205 route de Narbonne, 31077 Toulouse, France
| | - Teodor Parella
- Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Spain
| | - José María Martínez-Agudo
- Instituto de Ciencia Molecular, Universidad de Valencia, Catedrático José Beltrán 2, 46980 Paterna, Spain
| | - Julio Lloret-Fillol
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, 43007 Tarragona, Spain; ICREA, Passeig Lluís Companys, 23, 08010 Barcelona, Spain
| | - Mónica Helvia Pérez-Temprano
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Eliseo Ruiz
- Departament de Química Inorgànica i Orgànica and Institut de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - José Ramón Galán-Mascarós
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, 43007 Tarragona, Spain; ICREA, Passeig Lluís Companys, 23, 08010 Barcelona, Spain.
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5
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Lawson T, Gentleman AS, Lage A, Casadevall C, Xiao J, Petit T, Frosz MH, Reisner E, Euser TG. Low-Volume Reaction Monitoring of Carbon Dot Light Absorbers in Optofluidic Microreactors. ACS Catal 2023; 13:9090-9101. [PMID: 37441232 PMCID: PMC10334427 DOI: 10.1021/acscatal.3c02212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/07/2023] [Indexed: 07/15/2023]
Abstract
Optical monitoring and screening of photocatalytic batch reactions using cuvettes ex situ is time-consuming, requires substantial amounts of samples, and does not allow the analysis of species with low extinction coefficients. Hollow-core photonic crystal fibers (HC-PCFs) provide an innovative approach for in situ reaction detection using ultraviolet-visible absorption spectroscopy, with the potential for high-throughput automation using extremely low sample volumes with high sensitivity for monitoring of the analyte. HC-PCFs use interference effects to guide light at the center of a microfluidic channel and use this to enhance detection sensitivity. They open the possibility of comprehensively studying photocatalysts to extract structure-activity relationships, which is unfeasible with similar reaction volume, time, and sensitivity in cuvettes. Here, we demonstrate the use of HC-PCF microreactors for the screening of the electron transfer properties of carbon dots (CDs), a nanometer-sized material that is emerging as a homogeneous light absorber in photocatalysis. The CD-driven photoreduction reaction of viologens (XV2+) to the corresponding radical monocation XV•+ is monitored in situ as a model reaction, using a sample volume of 1 μL per measurement and with a detectability of <1 μM. A range of different reaction conditions have been systematically studied, including different types of CDs (i.e., amorphous, graphitic, and graphitic nitrogen-doped CDs), surface chemistry, viologens, and electron donors. Furthermore, the excitation irradiance was varied to study its effect on the photoreduction rate. The findings are correlated with the electron transfer properties of CDs based on their electronic structure characterized by soft X-ray absorption spectroscopy. Optofluidic microreactors with real-time optical detection provide unique insight into the reaction dynamics of photocatalytic systems and could form the basis of future automated catalyst screening platforms, where samples are only available on small scales or at a high cost.
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Affiliation(s)
- Takashi Lawson
- NanoPhotonics
Centre, Cavendish Laboratory, University
of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, U.K.
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield
Road, Cambridge CB2 1EW, U.K.
| | - Alexander S. Gentleman
- NanoPhotonics
Centre, Cavendish Laboratory, University
of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, U.K.
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield
Road, Cambridge CB2 1EW, U.K.
| | - Ava Lage
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield
Road, Cambridge CB2 1EW, U.K.
| | - Carla Casadevall
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield
Road, Cambridge CB2 1EW, U.K.
| | - Jie Xiao
- Helmholtz-Zentrum
Berlin für Materialien und Energy GmbH, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - Tristan Petit
- Helmholtz-Zentrum
Berlin für Materialien und Energy GmbH, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - Michael H. Frosz
- Max
Planck Institute for the Science of Light, Staudtstr. 2, 91058 Erlangen, Germany
| | - Erwin Reisner
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield
Road, Cambridge CB2 1EW, U.K.
| | - Tijmen G. Euser
- NanoPhotonics
Centre, Cavendish Laboratory, University
of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, U.K.
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6
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Gutiérrez L, Martin-Diaconescu V, Casadevall C, Oropeza F, de la Peña O’Shea VA, Meng J, Ortuño MA, Lloret-Fillol J. Low Oxidation State Cobalt Center Stabilized by a Covalent Organic Framework to Promote Hydroboration of Olefins. ACS Catal 2023. [DOI: 10.1021/acscatal.2c05442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Affiliation(s)
- Luis Gutiérrez
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
- Departament de Química Organica i Analítica, Universitat Rovira i Virgili, 43007 Tarragona, Spain
| | - Vlad Martin-Diaconescu
- ALBA Synchrotron Light Source, Carretera BP 1413, Km. 3.3, 08290 Cerdanyola del Vallès, Barcelona, Spain
| | - Carla Casadevall
- Yusuf Hamied Department of Chemistry, University of Cambridge, CB2 1EW Cambridge, U.K
| | - Freddy Oropeza
- Photoactivated Processes Unit, IMDEA Energy, 28935 Móstoles, Spain
| | | | - JingJing Meng
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Manuel A. Ortuño
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Julio Lloret-Fillol
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluïs Companys, 23, 08010 Barcelona, Spain
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7
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Garcia-Osorio DA, Shalvey TP, Banerji L, Saeed K, Neri G, Phillips LJ, Hutter OS, Casadevall C, Antón-García D, Reisner E, Major JD, Cowan AJ. Hybrid photocathode based on a Ni molecular catalyst and Sb 2Se 3 for solar H 2 production. Chem Commun (Camb) 2023; 59:944-947. [PMID: 36597867 DOI: 10.1039/d2cc04810h] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We report a H2 evolving hybrid photocathode based on Sb2Se3 and a precious metal free molecular catalyst. Through the use of a high surface area TiO2 scaffold, we successfully increased the Ni molecular catalyst loading from 7.08 ± 0.43 to 45.76 ± 0.81 nmol cm-2, achieving photocurrents of 1.3 mA cm-2 at 0 V vs. RHE, which is 81-fold higher than the device without the TiO2 mesoporous layer.
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Affiliation(s)
| | - Thomas P Shalvey
- Stephenson Institute for Renewable Energy, University of Liverpool, L69 7ZF, UK.
| | - Liam Banerji
- Stephenson Institute for Renewable Energy, University of Liverpool, L69 7ZF, UK.
| | - Khezar Saeed
- Stephenson Institute for Renewable Energy, University of Liverpool, L69 7ZF, UK. .,Department of Chemistry, Aarhus University, Aarhus C 8000, Denmark
| | - Gaia Neri
- Stephenson Institute for Renewable Energy, University of Liverpool, L69 7ZF, UK.
| | - Laurie J Phillips
- Stephenson Institute for Renewable Energy, University of Liverpool, L69 7ZF, UK.
| | - Oliver S Hutter
- Stephenson Institute for Renewable Energy, University of Liverpool, L69 7ZF, UK. .,Department of Mathematics, Physics and Electrical Engineering, Northumbria University, NE1 8ST, UK
| | - Carla Casadevall
- Yusuf Hamied Department of Chemistry, University of Cambridge, CB2 1EW, UK
| | | | - Erwin Reisner
- Yusuf Hamied Department of Chemistry, University of Cambridge, CB2 1EW, UK
| | - Jonathan D Major
- Stephenson Institute for Renewable Energy, University of Liverpool, L69 7ZF, UK.
| | - Alexander J Cowan
- Stephenson Institute for Renewable Energy, University of Liverpool, L69 7ZF, UK.
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8
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Piper SEH, Casadevall C, Reisner E, Clarke TA, Jeuken LJC, Gates AJ, Butt JN. Photocatalytic Removal of the Greenhouse Gas Nitrous Oxide by Liposomal Microreactors. Angew Chem Int Ed Engl 2022; 61:e202210572. [PMID: 35951464 PMCID: PMC9825952 DOI: 10.1002/anie.202210572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Indexed: 01/11/2023]
Abstract
Nitrous oxide (N2 O) is a potent greenhouse and ozone-reactive gas for which emissions are growing rapidly due to increasingly intensive agriculture. Synthetic catalysts for N2 O decomposition typically contain precious metals and/or operate at elevated temperatures driving a desire for more sustainable alternatives. Here we demonstrate self-assembly of liposomal microreactors enabling catalytic reduction of N2 O to the climate neutral product N2 . Photoexcitation of graphitic N-doped carbon dots delivers electrons to encapsulated N2 O Reductase enzymes via a lipid-soluble biomolecular wire provided by the MtrCAB protein complex. Within the microreactor, electron transfer from MtrCAB to N2 O Reductase is facilitated by the general redox mediator methyl viologen. The liposomal microreactors use only earth-abundant elements to catalyze N2 O removal in ambient, aqueous conditions.
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Affiliation(s)
- Samuel E. H. Piper
- School of ChemistryUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK
| | - Carla Casadevall
- Yusuf Hamied Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Erwin Reisner
- Yusuf Hamied Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Thomas A. Clarke
- School of Biological SciencesUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK
| | - Lars J. C. Jeuken
- Leiden Institute of ChemistryLeiden UniversityPO Box 95022300 RALeidenThe Netherlands
| | - Andrew J. Gates
- School of Biological SciencesUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK
| | - Julea N. Butt
- School of ChemistryUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK,School of Biological SciencesUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK
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9
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Piper SEH, Casadevall C, Reisner E, Clarke TA, Jeuken LJC, Gates AJ, Butt JN. Photocatalytic Removal of the Greenhouse Gas Nitrous Oxide by Liposomal Microreactors. Angew Chem Weinheim Bergstr Ger 2022; 134:e202210572. [PMID: 38529325 PMCID: PMC10962689 DOI: 10.1002/ange.202210572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Indexed: 11/11/2022]
Abstract
Nitrous oxide (N2O) is a potent greenhouse and ozone-reactive gas for which emissions are growing rapidly due to increasingly intensive agriculture. Synthetic catalysts for N2O decomposition typically contain precious metals and/or operate at elevated temperatures driving a desire for more sustainable alternatives. Here we demonstrate self-assembly of liposomal microreactors enabling catalytic reduction of N2O to the climate neutral product N2. Photoexcitation of graphitic N-doped carbon dots delivers electrons to encapsulated N2O Reductase enzymes via a lipid-soluble biomolecular wire provided by the MtrCAB protein complex. Within the microreactor, electron transfer from MtrCAB to N2O Reductase is facilitated by the general redox mediator methyl viologen. The liposomal microreactors use only earth-abundant elements to catalyze N2O removal in ambient, aqueous conditions.
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Affiliation(s)
- Samuel E. H. Piper
- School of ChemistryUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK
| | - Carla Casadevall
- Yusuf Hamied Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Erwin Reisner
- Yusuf Hamied Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Thomas A. Clarke
- School of Biological SciencesUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK
| | - Lars J. C. Jeuken
- Leiden Institute of ChemistryLeiden UniversityPO Box 95022300 RALeidenThe Netherlands
| | - Andrew J. Gates
- School of Biological SciencesUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK
| | - Julea N. Butt
- School of ChemistryUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK
- School of Biological SciencesUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK
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10
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Badiani VM, Casadevall C, Miller M, Cobb SJ, Manuel RR, Pereira IAC, Reisner E. Engineering Electro- and Photocatalytic Carbon Materials for CO 2 Reduction by Formate Dehydrogenase. J Am Chem Soc 2022; 144:14207-14216. [PMID: 35900819 PMCID: PMC9376922 DOI: 10.1021/jacs.2c04529] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Semiartificial approaches to renewable fuel synthesis exploit the integration of enzymes with synthetic materials for kinetically efficient fuel production. Here, a CO2 reductase, formate dehydrogenase (FDH) from Desulfovibrio vulgaris Hildenborough, is interfaced with carbon nanotubes (CNTs) and amorphous carbon dots (a-CDs). Each carbon substrate, tailored for electro- and photocatalysis, is functionalized with positive (-NHMe2+) and negative (-COO-) chemical surface groups to understand and optimize the electrostatic effect of protein association and orientation on CO2 reduction. Immobilization of FDH on positively charged CNT electrodes results in efficient and reversible electrochemical CO2 reduction via direct electron transfer with >90% Faradaic efficiency and -250 μA cm-2 at -0.6 V vs SHE (pH 6.7 and 25 °C) for formate production. In contrast, negatively charged CNTs only result in marginal currents with immobilized FDH. Quartz crystal microbalance analysis and attenuated total reflection infrared spectroscopy confirm the high binding affinity of active FDH to CNTs. FDH has subsequently been coupled to a-CDs, where the benefits of the positive charge (-NHMe2+-terminated a-CDs) were translated to a functional CD-FDH hybrid photocatalyst. High rates of photocatalytic CO2 reduction (turnover frequency: 3.5 × 103 h-1; AM 1.5G) with dl-dithiothreitol as the sacrificial electron donor were obtained after 6 h, providing benchmark rates for homogeneous photocatalytic CO2 reduction with metal-free light absorbers. This work provides a rational basis to understand interfacial surface/enzyme interactions at electrodes and photosensitizers to guide improvements with catalytic biohybrid materials.
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Affiliation(s)
- Vivek M Badiani
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, U.K.,Cambridge Graphene Centre, University of Cambridge, Cambridge, CB3 0FA, U.K
| | - Carla Casadevall
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, U.K
| | - Melanie Miller
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, U.K
| | - Samuel J Cobb
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, U.K
| | - Rita R Manuel
- Instituto de Tecnologia Química e Biológica António Xavier (ITQB NOVA), Universidade NOVA de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Inês A C Pereira
- Instituto de Tecnologia Química e Biológica António Xavier (ITQB NOVA), Universidade NOVA de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Erwin Reisner
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, U.K
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11
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Li T, Vijeta A, Casadevall C, Gentleman AS, Euser T, Reisner E. Bridging Plastic Recycling and Organic Catalysis: Photocatalytic Deconstruction of Polystyrene via a C–H Oxidation Pathway. ACS Catal 2022; 12:8155-8163. [PMID: 35874621 PMCID: PMC9295126 DOI: 10.1021/acscatal.2c02292] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Chemical recycling
of synthetic polymers represents a promising
strategy to deconstruct plastic waste and make valuable products.
Inspired by small-molecule C–H bond activation, a visible-light-driven
reaction is developed to deconstruct polystyrene (PS) into ∼40%
benzoic acid as well as ∼20% other monomeric aromatic products
at 50 °C and ambient pressure. The practicality of this strategy
is demonstrated by deconstruction of real-world PS foam on a gram
scale. The reaction is proposed to proceed via a C–H bond oxidation
pathway, which is supported by theoretical calculations and experimental
results. Fluorescence quenching experiments also support efficient
electron transfer between the photocatalyst and the polymer substrate,
providing further evidence for the proposed mechanism. This study
introduces concepts from small-molecule catalysis to polymer deconstruction
and provides a promising method to tackle the global crisis of plastic
pollution.
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Affiliation(s)
- Tengfei Li
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, U.K
- Department of Natural Sciences, Manchester Metropolitan University, Manchester M1 5GD, U.K
| | - Arjun Vijeta
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, U.K
| | - Carla Casadevall
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, U.K
| | | | - Tijmen Euser
- Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, U.K
| | - Erwin Reisner
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, U.K
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12
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Vijeta A, Casadevall C, Reisner E. An Integrated Carbon Nitride-Nickel Photocatalyst for the Amination of Aryl Halides Using Sodium Azide. Angew Chem Int Ed Engl 2022; 61:e202203176. [PMID: 35332981 PMCID: PMC9321912 DOI: 10.1002/anie.202203176] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Indexed: 11/12/2022]
Abstract
The synthesis of primary anilines via sustainable methods remains a challenge in organic synthesis. We report a photocatalytic protocol for the selective synthesis of primary anilines via cross‐coupling of a wide range of aryl/heteroaryl halides with sodium azide using a photocatalyst powder consisting of nickel(II) deposited on mesoporous carbon nitride (Ni‐mpg‐CNx). This heterogeneous photocatalyst contains a high surface area with a visible light‐absorbing and adaptive “built‐in” solid‐state ligand for the integrated catalytic Ni site. The method displays a high functional group tolerance, requires mild reaction conditions, and benefits from easy recovery and reuse of the photocatalyst powder. Thereby, it overcomes the need of complex ligand scaffolds required in homogeneous catalysis, precious metals and elevated temperatures/pressures in existing protocols of primary anilines synthesis. The reported heterogeneous Ni‐mpg‐CNx holds potential for applications in the academic and industrial synthesis of anilines and exploration of other photocatalytic transformations.
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Affiliation(s)
- Arjun Vijeta
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Carla Casadevall
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Erwin Reisner
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
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13
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Casadevall C, Pascual D, Aragón J, Call A, Casitas A, Casademont-Reig I, Lloret-Fillol J. Light-driven reduction of aromatic olefins in aqueous media catalysed by aminopyridine cobalt complexes. Chem Sci 2022; 13:4270-4282. [PMID: 35509462 PMCID: PMC9006965 DOI: 10.1039/d1sc06608k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 03/09/2022] [Indexed: 12/15/2022] Open
Abstract
A catalytic system based on earth-abundant elements that efficiently hydrogenates aryl olefins using visible light as the driving-force and H2O as the sole hydrogen atom source is reported. The catalytic system involves a robust and well-defined aminopyridine cobalt complex and a heteroleptic Cu photoredox catalyst. The system shows the reduction of styrene in aqueous media with a remarkable selectivity (>20 000) versus water reduction (WR). Reactivity and mechanistic studies support the formation of a [Co–H] intermediate, which reacts with the olefin via a hydrogen atom transfer (HAT). Synthetically useful deuterium-labelled compounds can be straightforwardly obtained by replacing H2O with D2O. Moreover, the dual photocatalytic system and the photocatalytic conditions can be rationally designed to tune the selectivity for aryl olefin vs. aryl ketone reduction; not only by changing the structural and electronic properties of the cobalt catalysts, but also by modifying the reduction properties of the photoredox catalyst. A dual catalytic system based on earth-abundant elements reduces aryl olefins to alkanes in aqueous media under visible light. Mechanistic studies allow for rational tunning of the system for the selective reduction of aryl olefins vs ketones and vice versa.![]()
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Affiliation(s)
- Carla Casadevall
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology Avinguda Països Catalans 16 43007 Tarragona Spain
| | - David Pascual
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology Avinguda Països Catalans 16 43007 Tarragona Spain
| | - Jordi Aragón
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology Avinguda Països Catalans 16 43007 Tarragona Spain
| | - Arnau Call
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology Avinguda Països Catalans 16 43007 Tarragona Spain
| | - Alicia Casitas
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology Avinguda Països Catalans 16 43007 Tarragona Spain
| | - Irene Casademont-Reig
- Donostia International Physics Center (DIPC), Polimero eta Material Aurreratuak: Fisika, Kimika eta Teknologia, Kimika Fakultatea, Euskal Herriko Unibertsitatea UPV/EHU P.K. 1072 20080 Donostia Euskadi Spain
| | - Julio Lloret-Fillol
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology Avinguda Països Catalans 16 43007 Tarragona Spain .,Catalan Institution for Research and Advanced Studies (ICREA) Passeig Lluïs Companys, 23 08010 Barcelona Spain
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14
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Vijeta A, Casadevall C, Reisner E. An Integrated Carbon Nitride‐Nickel Photocatalyst for the Amination of Aryl Halides using Sodium Azide. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Arjun Vijeta
- University of Cambridge Chemistry UNITED KINGDOM
| | | | - Erwin Reisner
- University of Cambridge Chemistry Lensfield Road CB2 1EW Cambridge UNITED KINGDOM
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15
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Levin N, Casadevall C, Cutsail GE, Lloret‐Fillol J, DeBeer S, Rüdiger O. XAS and EPR in Situ Observation of Ru(V) Oxo Intermediate in a Ru Water Oxidation Complex. ChemElectroChem 2021. [DOI: 10.1002/celc.202101683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Natalia Levin
- Max Planck Institute for Chemical Energy Conversion Stiftstr. 34–36 45470 Mülheim an der Ruhr Germany
| | - Carla Casadevall
- Catalan Institution for Research and Advanced Studies (ICREA) Lluïs Companys, 23 08010 Barcelona Spain
- Current address Department of Chemistry University of Cambridge Lensfield road CB2 1EW Cambridge UK
| | - George E. Cutsail
- Max Planck Institute for Chemical Energy Conversion Stiftstr. 34–36 45470 Mülheim an der Ruhr Germany
- University of Duisburg-Essen Department of Chemistry Universitätstr. 7 45141 Essen Germany
| | - Julio Lloret‐Fillol
- Catalan Institution for Research and Advanced Studies (ICREA) Lluïs Companys, 23 08010 Barcelona Spain
| | - Serena DeBeer
- Max Planck Institute for Chemical Energy Conversion Stiftstr. 34–36 45470 Mülheim an der Ruhr Germany
| | - Olaf Rüdiger
- Max Planck Institute for Chemical Energy Conversion Stiftstr. 34–36 45470 Mülheim an der Ruhr Germany
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16
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Levin N, Casadevall C, Cutsail GE, Lloret‐Fillol J, DeBeer S, Rüdiger O. XAS and EPR in Situ Observation of Ru(V) Oxo Intermediate in a Ru Water Oxidation Complex. ChemElectroChem 2021. [DOI: 10.1002/celc.202101684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Natalia Levin
- Max Planck Institute for Chemical Energy Conversion Stiftstr. 34–36 45470 Mülheim an der Ruhr Germany
| | - Carla Casadevall
- Catalan Institution for Research and Advanced Studies (ICREA) Lluïs Companys, 23 08010 Barcelona Spain
- Current address Department of Chemistry University of Cambridge Lensfield road CB2 1EW Cambridge UK
| | - George E. Cutsail
- Max Planck Institute for Chemical Energy Conversion Stiftstr. 34–36 45470 Mülheim an der Ruhr Germany
- University of Duisburg-Essen Department of Chemistry Universitätstr. 7 45141 Essen Germany
| | - Julio Lloret‐Fillol
- Catalan Institution for Research and Advanced Studies (ICREA) Lluïs Companys, 23 08010 Barcelona Spain
| | - Serena DeBeer
- Max Planck Institute for Chemical Energy Conversion Stiftstr. 34–36 45470 Mülheim an der Ruhr Germany
| | - Olaf Rüdiger
- Max Planck Institute for Chemical Energy Conversion Stiftstr. 34–36 45470 Mülheim an der Ruhr Germany
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17
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Levin N, Casadevall C, Cutsail GE, Lloret‐Fillol J, DeBeer S, Rüdiger O. XAS and EPR in Situ Observation of Ru(V) Oxo Intermediate in a Ru Water Oxidation Complex**. ChemElectroChem 2021; 9:e202101271. [PMID: 35874044 PMCID: PMC9302654 DOI: 10.1002/celc.202101271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 11/12/2021] [Indexed: 11/13/2022]
Abstract
In this study, we combine in situ spectroelectrochemistry coupled with electron paramagnetic resonance (EPR) and X‐ray absorption spectroscopies (XAS) to investigate a molecular Ru‐based water oxidation catalyst bearing a polypyridinic backbone [RuII(OH2)(Py2Metacn)]2+. Although high valent key intermediate species arising in catalytic cycles of this family of compounds have remain elusive due to the lack of additional anionic ligands that could potentially stabilize them, mechanistic studies performed on this system proposed a water nucleophilic attack (WNA) mechanism for the O−O bond formation. Employing in situ experimental conditions and complementary spectroscopic techniques allowed to observe intermediates that provide support for a WNA mechanism, including for the first time a Ru(V) oxo intermediate based on the Py2Metacn ligand, in agreement with the previously proposed mechanism.
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Affiliation(s)
- Natalia Levin
- Max Planck Institute for Chemical Energy Conversion Stiftstr. 34–36 D-45470 Mülheim an der Ruhr Germany
| | - Carla Casadevall
- Institute of Chemical Research of Catalonia (ICIQ) Avinguda Països Catalans, 16 43007 Tarragona Spain
- Current address Department of Chemistry University of Cambridge Lensfield road CB2 1EW Cambridge UK
| | - George E. Cutsail
- Max Planck Institute for Chemical Energy Conversion Stiftstr. 34–36 D-45470 Mülheim an der Ruhr Germany
- University of Duisburg-Essen Department of Chemistry Universitätstr. 7 D-45141 Essen Germany
| | - Julio Lloret‐Fillol
- Institute of Chemical Research of Catalonia (ICIQ) Avinguda Països Catalans, 16 43007 Tarragona Spain
| | - Serena DeBeer
- Max Planck Institute for Chemical Energy Conversion Stiftstr. 34–36 D-45470 Mülheim an der Ruhr Germany
| | - Olaf Rüdiger
- Max Planck Institute for Chemical Energy Conversion Stiftstr. 34–36 D-45470 Mülheim an der Ruhr Germany
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18
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Wen Z, Wan T, Vijeta A, Casadevall C, Buglioni L, Reisner E, Noël T. Photocatalytic C-H Azolation of Arenes Using Heterogeneous Carbon Nitride in Batch and Flow. ChemSusChem 2021; 14:5265-5270. [PMID: 34529334 PMCID: PMC9298336 DOI: 10.1002/cssc.202101767] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/16/2021] [Indexed: 05/08/2023]
Abstract
The functionalization of aryl C(sp2 )-H bonds is a useful strategy for the late-stage modification of biologically active molecules, especially for the regioselective introduction of azole heterocycles to prepare medicinally-relevant compounds. Herein, we describe a practical photocatalytic transformation using a mesoporous carbon nitride (mpg-CNx ) photocatalyst, which enables the efficient azolation of various arenes through direct oxidation. The method exhibits a broad substrate scope and is amenable to the late-stage functionalization of several pharmaceuticals. Due to the heterogeneous nature and high photocatalytic stability of mpg-CNx , the catalyst can be easily recovered and reused leading to greener and more sustainable routes, using either batch or flow processing, to prepare these important compounds of interest in pharmaceutical and agrochemical research.
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Affiliation(s)
- Zhenghui Wen
- Flow Chemistry GroupVan't Hoff Institute for Molecular Sciences (HIMS)Universiteit van Amsterdam (UvA)Science Park 9041098 XHAmsterdamThe Netherlands
| | - Ting Wan
- Flow Chemistry GroupVan't Hoff Institute for Molecular Sciences (HIMS)Universiteit van Amsterdam (UvA)Science Park 9041098 XHAmsterdamThe Netherlands
| | - Arjun Vijeta
- Yusuf Hamied Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUnited Kingdom
| | - Carla Casadevall
- Yusuf Hamied Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUnited Kingdom
| | - Laura Buglioni
- Department of Chemical Engineering and ChemistrySustainable Process EngineeringEindhoven University of TechnologyP.O. Box 5135600 MBEindhovenThe Netherlands
| | - Erwin Reisner
- Yusuf Hamied Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUnited Kingdom
| | - Timothy Noël
- Flow Chemistry GroupVan't Hoff Institute for Molecular Sciences (HIMS)Universiteit van Amsterdam (UvA)Science Park 9041098 XHAmsterdamThe Netherlands
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19
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Piper SEH, Edwards MJ, van Wonderen JH, Casadevall C, Martel A, Jeuken LJC, Reisner E, Clarke TA, Butt JN. Bespoke Biomolecular Wires for Transmembrane Electron Transfer: Spontaneous Assembly of a Functionalized Multiheme Electron Conduit. Front Microbiol 2021; 12:714508. [PMID: 34484155 PMCID: PMC8415449 DOI: 10.3389/fmicb.2021.714508] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 07/12/2021] [Indexed: 11/13/2022] Open
Abstract
Shewanella oneidensis exchanges electrons between cellular metabolism and external redox partners in a process that attracts much attention for production of green electricity (microbial fuel cells) and chemicals (microbial electrosynthesis). A critical component of this pathway is the outer membrane spanning MTR complex, a biomolecular wire formed of the MtrA, MtrB, and MtrC proteins. MtrA and MtrC are decaheme cytochromes that form a chain of close-packed hemes to define an electron transfer pathway of 185 Å. MtrA is wrapped inside MtrB for solubility across the outer membrane lipid bilayer; MtrC sits outside the cell for electron exchange with external redox partners. Here, we demonstrate tight and spontaneous in vitro association of MtrAB with separately purified MtrC. The resulting complex is comparable with the MTR complex naturally assembled by Shewanella in terms of both its structure and rates of electron transfer across a lipid bilayer. Our findings reveal the potential for building bespoke electron conduits where MtrAB combines with chemically modified MtrC, in this case, labeled with a Ru-dye that enables light-triggered electron injection into the MtrC heme chain.
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Affiliation(s)
- Samuel E H Piper
- School of Chemistry and School of Biological Sciences, University of East Anglia, Norwich, United Kingdom
| | - Marcus J Edwards
- School of Chemistry and School of Biological Sciences, University of East Anglia, Norwich, United Kingdom
| | - Jessica H van Wonderen
- School of Chemistry and School of Biological Sciences, University of East Anglia, Norwich, United Kingdom
| | - Carla Casadevall
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, United Kingdom
| | | | - Lars J C Jeuken
- School of Biomedical Sciences, University of Leeds, Leeds, United Kingdom
| | - Erwin Reisner
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, United Kingdom
| | - Thomas A Clarke
- School of Chemistry and School of Biological Sciences, University of East Anglia, Norwich, United Kingdom
| | - Julea N Butt
- School of Chemistry and School of Biological Sciences, University of East Anglia, Norwich, United Kingdom
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20
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Vijeta A, Casadevall C, Roy S, Reisner E. Visible-Light Promoted C-O Bond Formation with an Integrated Carbon Nitride-Nickel Heterogeneous Photocatalyst. Angew Chem Weinheim Bergstr Ger 2021; 133:8575-8580. [PMID: 38505321 PMCID: PMC10947600 DOI: 10.1002/ange.202016511] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Indexed: 11/11/2022]
Abstract
Ni-deposited mesoporous graphitic carbon nitride (Ni-mpg-CNx) is introduced as an inexpensive, robust, easily synthesizable and recyclable material that functions as an integrated dual photocatalytic system. This material overcomes the need of expensive photosensitizers, organic ligands and additives as well as limitations of catalyst deactivation in the existing photo/Ni dual catalytic cross-coupling reactions. The dual catalytic Ni-mpg-CNx is demonstrated for C-O coupling between aryl halides and aliphatic alcohols under mild condition. The reaction affords the ether product in good-to-excellent yields (60-92 %) with broad substrate scope, including heteroaryl and aryl halides bearing electron-withdrawing, -donating and neutral groups. The heterogeneous Ni-mpg-CNx can be easily recovered from the reaction mixture and reused over multiple cycles without loss of activity. The findings highlight exciting opportunities for dual catalysis promoted by a fully heterogeneous system.
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Affiliation(s)
- Arjun Vijeta
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Carla Casadevall
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Souvik Roy
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
- Current address: School of ChemistryUniversity of LincolnJoseph Banks LaboratoriesLincolnLN6 7DLUK
| | - Erwin Reisner
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
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21
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Vijeta A, Casadevall C, Roy S, Reisner E. Visible-Light Promoted C-O Bond Formation with an Integrated Carbon Nitride-Nickel Heterogeneous Photocatalyst. Angew Chem Int Ed Engl 2021; 60:8494-8499. [PMID: 33559927 PMCID: PMC8048670 DOI: 10.1002/anie.202016511] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Indexed: 11/10/2022]
Abstract
Ni-deposited mesoporous graphitic carbon nitride (Ni-mpg-CNx ) is introduced as an inexpensive, robust, easily synthesizable and recyclable material that functions as an integrated dual photocatalytic system. This material overcomes the need of expensive photosensitizers, organic ligands and additives as well as limitations of catalyst deactivation in the existing photo/Ni dual catalytic cross-coupling reactions. The dual catalytic Ni-mpg-CNx is demonstrated for C-O coupling between aryl halides and aliphatic alcohols under mild condition. The reaction affords the ether product in good-to-excellent yields (60-92 %) with broad substrate scope, including heteroaryl and aryl halides bearing electron-withdrawing, -donating and neutral groups. The heterogeneous Ni-mpg-CNx can be easily recovered from the reaction mixture and reused over multiple cycles without loss of activity. The findings highlight exciting opportunities for dual catalysis promoted by a fully heterogeneous system.
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Affiliation(s)
- Arjun Vijeta
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Carla Casadevall
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Souvik Roy
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
- Current address: School of ChemistryUniversity of LincolnJoseph Banks LaboratoriesLincolnLN6 7DLUK
| | - Erwin Reisner
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
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22
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D’Agostini S, Kottrup KG, Casadevall C, Gamba I, Dantignana V, Bucci A, Costas M, Lloret-Fillol J, Hetterscheid DG. Electrocatalytic Water Oxidation with α-[Fe(mcp)(OTf) 2] and Analogues. ACS Catal 2021; 11:2583-2595. [PMID: 33815893 PMCID: PMC8016111 DOI: 10.1021/acscatal.0c05439] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/26/2021] [Indexed: 12/02/2022]
Abstract
![]()
The complex α-[Fe(mcp)(OTf)2] (mcp = N,N′-dimethyl-N,N′-bis(pyridin-2-ylmethyl)-cyclohexane-1,2-diamine
and OTf
= trifluoromethanesulfonate anion) was reported in 2011 by some of
us as an active water oxidation (WO) catalyst in the presence of sacrificial
oxidants. However, because chemical oxidants are likely to take part
in the reaction mechanism, mechanistic electrochemical studies are
critical in establishing to what extent previous studies with sacrificial
reagents have actually been meaningful. In this study, the complex
α-[Fe(mcp)(OTf)2] and its analogues were investigated
electrochemically under both acidic and neutral conditions. All the
systems under investigation proved to be electrochemically active
toward the WO reaction, with no major differences in activity despite
the structural changes. Our findings show that WO-catalyzed by mcp–iron
complexes proceeds via homogeneous species, whereas the analogous
manganese complex forms a heterogeneous deposit on the electrode surface.
Mechanistic studies show that the reaction proceeds with a different
rate-determining step (rds) than what was previously proposed in the
presence of chemical oxidants. Moreover, the different kinetic isotope
effect (KIE) values obtained electrochemically at pH 7 (KIE ∼
10) and at pH 1 (KIE = 1) show that the reaction conditions have a
remarkable effect on the rds and on the mechanism. We suggest a proton-coupled
electron transfer (PCET) as the rds under neutral conditions, whereas
at pH 1 the rds is most likely an electron transfer (ET).
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Affiliation(s)
- Silvia D’Agostini
- Leiden Institute of Chemistry, Leiden University, 2300 RA Leiden, The Netherlands
| | | | - Carla Casadevall
- Institute of Chemical Research of Catalonia, Spain (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Ilaria Gamba
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, 17003 Girona, Spain
| | - Valeria Dantignana
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, 17003 Girona, Spain
| | - Alberto Bucci
- Institute of Chemical Research of Catalonia, Spain (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Miquel Costas
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, 17003 Girona, Spain
| | - Julio Lloret-Fillol
- Institute of Chemical Research of Catalonia, Spain (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluïs Companys 23, 08010 Barcelona, Spain
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23
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Pannwitz A, Klein DM, Rodríguez-Jiménez S, Casadevall C, Song H, Reisner E, Hammarström L, Bonnet S. Roadmap towards solar fuel synthesis at the water interface of liposome membranes. Chem Soc Rev 2021; 50:4833-4855. [DOI: 10.1039/d0cs00737d] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This tutorial review describes the physical–chemical aspects one must consider when building photocatalytic liposomes for solar fuel production.
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Affiliation(s)
- Andrea Pannwitz
- Leiden Institute of Chemistry
- Leiden University
- Leiden
- The Netherlands
- Institute of Inorganic Chemistry I
| | - David M. Klein
- Leiden Institute of Chemistry
- Leiden University
- Leiden
- The Netherlands
| | | | - Carla Casadevall
- Yusuf Hamied Department of Chemistry
- University of Cambridge
- Cambridge CB2 1EW
- UK
| | - Hongwei Song
- Department of Chemistry – Angstrom Laboratory
- Uppsala University
- 751 20 Uppsala
- Sweden
| | - Erwin Reisner
- Yusuf Hamied Department of Chemistry
- University of Cambridge
- Cambridge CB2 1EW
- UK
| | - Leif Hammarström
- Department of Chemistry – Angstrom Laboratory
- Uppsala University
- 751 20 Uppsala
- Sweden
| | - Sylvestre Bonnet
- Leiden Institute of Chemistry
- Leiden University
- Leiden
- The Netherlands
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Rosa-Pardo I, Casadevall C, Schmidt L, Claros M, Galian RE, Lloret-Fillol J, Pérez-Prieto J. The synergy between the CsPbBr3 nanoparticle surface and the organic ligand becomes manifest in a demanding carbon–carbon coupling reaction. Chem Commun (Camb) 2020; 56:5026-5029. [DOI: 10.1039/d0cc01339k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The cooperative action between the CsPbBr3 surface and capping makes the photoredox homo-/cross-coupling of benzyl bromides under mild conditions possible.
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Affiliation(s)
- Ignacio Rosa-Pardo
- Institute of Molecular Science (ICMol)
- University of Valencia c/Catedrático José Beltrán 2
- Paterna
- E46980 Valencia
- Spain
| | - Carla Casadevall
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology
- Avinguda Països Catalans 16
- 43007 Tarragona
- Spain
| | - Luciana Schmidt
- Institute of Molecular Science (ICMol)
- University of Valencia c/Catedrático José Beltrán 2
- Paterna
- E46980 Valencia
- Spain
| | - Miguel Claros
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology
- Avinguda Països Catalans 16
- 43007 Tarragona
- Spain
| | - Raquel E. Galian
- Institute of Molecular Science (ICMol)
- University of Valencia c/Catedrático José Beltrán 2
- Paterna
- E46980 Valencia
- Spain
| | - Julio Lloret-Fillol
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology
- Avinguda Països Catalans 16
- 43007 Tarragona
- Spain
- Catalan Institution for Research and Advanced Studies (ICREA) Passeig Lluïs Companys, 23
| | - Julia Pérez-Prieto
- Institute of Molecular Science (ICMol)
- University of Valencia c/Catedrático José Beltrán 2
- Paterna
- E46980 Valencia
- Spain
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Fernández S, Franco F, Casadevall C, Martin-Diaconescu V, Luis JM, Lloret-Fillol J. A Unified Electro- and Photocatalytic CO2 to CO Reduction Mechanism with Aminopyridine Cobalt Complexes. J Am Chem Soc 2019; 142:120-133. [DOI: 10.1021/jacs.9b06633] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sergio Fernández
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Federico Franco
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Carla Casadevall
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Vlad Martin-Diaconescu
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Josep M. Luis
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona, E-17003 Catalonia, Spain
| | - Julio Lloret-Fillol
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluïs Companys, 23, 08010 Barcelona, Spain
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Call A, Casadevall C, Romero-Rivera A, Martin-Diaconescu V, Sommer DJ, Osuna S, Ghirlanda G, Lloret-Fillol J. Improved Electro- and Photocatalytic Water Reduction by Confined Cobalt Catalysts in Streptavidin. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04981] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Arnau Call
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Carla Casadevall
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Adrian Romero-Rivera
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Carrer Maria Aurèlia Capmany 69, 17003 Girona, Spain
| | - Vlad Martin-Diaconescu
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Dayn J. Sommer
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287-1604, United States
| | - Sílvia Osuna
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Carrer Maria Aurèlia Capmany 69, 17003 Girona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluïs Companys, 23, 08010, Barcelona, Spain
| | - Giovanna Ghirlanda
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287-1604, United States
| | - Julio Lloret-Fillol
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluïs Companys, 23, 08010, Barcelona, Spain
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Codolà Z, Gamba I, Acuña-Parés F, Casadevall C, Clémancey M, Latour JM, Luis JM, Lloret-Fillol J, Costas M. Design of Iron Coordination Complexes as Highly Active Homogenous Water Oxidation Catalysts by Deuteration of Oxidation-Sensitive Sites. J Am Chem Soc 2018; 141:323-333. [PMID: 30497265 DOI: 10.1021/jacs.8b10211] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The nature of the oxidizing species in water oxidation reactions with chemical oxidants catalyzed by α-[Fe(OTf)2(mcp)] (1α; mcp = N, N'-dimethyl- N, N'-bis(pyridin-2-ylmethyl)cyclohexane-1,2-diamine, OTf = trifluoromethanesulfonate anion) and β-[Fe(OTf)2(mcp)] (1β) has been investigated. Mössbauer spectroscopy provides definitive evidence that 1α and 1β generate oxoiron(IV) species as the resting state. Decomposition paths of the catalysts have been investigated by identifying and quantifying ligand fragments that form upon degradation. This analysis correlates the water oxidation activity of 1α and 1β with stability against oxidative damage of the ligand via aliphatic C-H oxidation. The site of degradation and the relative stability against oxidative degradation are shown to be dependent on the topology of the catalyst. Furthermore, the mechanisms of catalyst degradation have been rationalized by computational analyses, which also explain why the topology of the catalyst enforces different oxidation-sensitive sites. This information has served in creating catalysts where sensitive C-H bonds have been replaced by C-D bonds. The deuterated analogues D4-α-[Fe(OTf)2(mcp)] (D4-1α), D4-β-[Fe(OTf)2(mcp)] (D4-1β), and D6-β-[Fe(OTf)2(mcp)] (D6-1β) were prepared, and their catalytic activity has been studied. D4-1α proves to be an extraordinarily active and efficient catalyst (up to 91% of O2 yield); it exhibits initial reaction rates identical with those of its protio analogue, but it is substantially more robust toward oxidative degradation and yields more than 3400 TON ( n(O2)/ n(Fe)). Altogether this evidences that the water oxidation catalytic activity is performed by a well-defined coordination complex and not by iron oxides formed after oxidative degradation of the ligands.
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Affiliation(s)
- Zoel Codolà
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química , Universitat de Girona , Campus Montilivi, E17071 Girona , Catalonia , Spain
| | - Ilaria Gamba
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química , Universitat de Girona , Campus Montilivi, E17071 Girona , Catalonia , Spain
| | - Ferran Acuña-Parés
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Paisos Catalans 16 , 43007 , Tarragona , Catalonia , Spain
| | - Carla Casadevall
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Paisos Catalans 16 , 43007 , Tarragona , Catalonia , Spain
| | - Martin Clémancey
- Université Grenoble Alpes , CEA, CNRS, LCBM, pmb , F-38000 Grenoble , France
| | - Jean-Marc Latour
- Université Grenoble Alpes , CEA, CNRS, LCBM, pmb , F-38000 Grenoble , France
| | - Josep M Luis
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química , Universitat de Girona , Campus Montilivi, E17071 Girona , Catalonia , Spain
| | - Julio Lloret-Fillol
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Paisos Catalans 16 , 43007 , Tarragona , Catalonia , Spain.,Catalan Institution for Research and Advanced Studies (ICREA) , Passeig Lluïs Companys, 23 , 08010 , Barcelona , Spain
| | - Miquel Costas
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química , Universitat de Girona , Campus Montilivi, E17071 Girona , Catalonia , Spain
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Call A, Casadevall C, Acuña-Parés F, Casitas A, Lloret-Fillol J. Dual cobalt-copper light-driven catalytic reduction of aldehydes and aromatic ketones in aqueous media. Chem Sci 2017; 8:4739-4749. [PMID: 30155221 PMCID: PMC6100254 DOI: 10.1039/c7sc01276d] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 05/04/2017] [Indexed: 12/11/2022] Open
Abstract
A dual catalytic system based on earth-abundant elements reduces aromatic ketones and aldehydes to alcohols in aqueous media under visible light. An unprecedented selectivity for the reduction of aromatic ketones versus aliphatic aldehydes is reported.
We present an efficient, general, fast, and robust light-driven methodology based on earth-abundant elements to reduce aryl ketones, and both aryl and aliphatic aldehydes (up to 1400 TON). The catalytic system consists of a robust and well-defined aminopyridyl cobalt complex active for photocatalytic water reduction and the [Cu(bathocuproine)(Xantphos)](PF6) photoredox catalyst. The dual cobalt–copper system uses visible light as the driving-force and H2O and an electron donor (Et3N or iPr2EtN) as the hydride source. The catalytic system operates in aqueous mixtures (80–60% water) with high selectivity towards the reduction of organic substrates (>2000) vs. water reduction, and tolerates O2. High selectivity towards the hydrogenation of aryl ketones is observed in the presence of terminal olefins, aliphatic ketones, and alkynes. Remarkably, the catalytic system also shows unique selectivity for the reduction of acetophenone in the presence of aliphatic aldehydes. The catalytic system provides a simple and convenient method to obtain α,β-deuterated alcohols. Both the observed reactivity and the DFT modelling support a common cobalt hydride intermediate. The DFT modelled energy profile for the [Co–H] nucleophilic attack to acetophenone and water rationalises the competence of [CoII–H] to reduce acetophenone in the presence of water. Mechanistic studies suggest alternative mechanisms depending on the redox potential of the substrate. These results show the potential of the water reduction catalyst [Co(OTf)(Py2Tstacn)](OTf) (1), (Py2Tstacn = 1,4-di(picolyl)-7-(p-toluenesulfonyl)-1,4,7-triazacyclononane, OTf = trifluoromethanesulfonate anion) to develop light-driven selective organic transformations and fine solar chemicals.
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Affiliation(s)
- Arnau Call
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain .
| | - Carla Casadevall
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain .
| | - Ferran Acuña-Parés
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain .
| | - Alicia Casitas
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain .
| | - Julio Lloret-Fillol
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avinguda Països Catalans 16 , 43007 Tarragona , Spain . .,Catalan Institution for Research and Advanced Studies (ICREA) , Passeig Lluïs Companys, 23 , 08010 , Barcelona , Spain
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Casadevall C, Codolà Z, Costas M, Lloret-Fillol J. Spectroscopic, Electrochemical and Computational Characterisation of Ru Species Involved in Catalytic Water Oxidation: Evidence for a [Ru(V) (O)(Py2 (Me) tacn)] Intermediate. Chemistry 2016; 22:10111-26. [PMID: 27324949 DOI: 10.1002/chem.201600584] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Indexed: 01/09/2023]
Abstract
A new family of ruthenium complexes based on the N-pentadentate ligand Py2 (Me) tacn (N-methyl-N',N''-bis(2-picolyl)-1,4,7-triazacyclononane) has been synthesised and its catalytic activity has been studied in the water-oxidation (WO) reaction. We have used chemical oxidants (ceric ammonium nitrate and NaIO4 ) to generate the WO intermediates [Ru(II) (OH2 )(Py2 (Me) tacn)](2+) , [Ru(III) (OH2 )(Py2 (Me) tacn)](3+) , [Ru(III) (OH)(Py2 (Me) tacn)](2+) and [Ru(IV) (O)(Py2 (Me) tacn)](2+) , which have been characterised spectroscopically. Their relative redox and pH stability in water has been studied by using UV/Vis and NMR spectroscopies, HRMS and spectroelectrochemistry. [Ru(IV) (O)(Py2 (Me) tacn)](2+) has a long half-life (>48 h) in water. The catalytic cycle of WO has been elucidated by using kinetic, spectroscopic, (18) O-labelling and theoretical studies, and the conclusion is that the rate-determining step is a single-site water nucleophilic attack on a metal-oxo species. Moreover, [Ru(IV) (O)(Py2 (Me) tacn)](2+) is proposed to be the resting state under catalytic conditions. By monitoring Ce(IV) consumption, we found that the O2 evolution rate is redox-controlled and independent of the initial concentration of Ce(IV) . Based on these facts, we propose herein that [Ru(IV) (O)(Py2 (Me) tacn)](2+) is oxidised to [Ru(V) (O)(Py2 (Me) tacn)](2+) prior to attack by a water molecule to give [Ru(III) (OOH)(Py2 (Me) tacn)](2+) . Finally, it is shown that the difference in WO reactivity between the homologous iron and ruthenium [M(OH2 )(Py2 (Me) tacn)](2+) (M=Ru, Fe) complexes is due to the difference in the redox stability of the key M(V) (O) intermediate. These results contribute to a better understanding of the WO mechanism and the differences between iron and ruthenium complexes in WO reactions.
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Affiliation(s)
- Carla Casadevall
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007, Tarragona, Spain
| | - Zoel Codolà
- Institut de Química Computacional i Catàlisi (IQCC) and, Departament de Química, Universitat de Girona Campus Montilivi, 17071, Girona, Spain
| | - Miquel Costas
- Institut de Química Computacional i Catàlisi (IQCC) and, Departament de Química, Universitat de Girona Campus Montilivi, 17071, Girona, Spain
| | - Julio Lloret-Fillol
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007, Tarragona, Spain.
- Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluïs Companys, 23, 08010, Barcelona, Spain.
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Casadevall C, Coronell C, Ramírez-Sarmiento AL, Martínez-Llorens J, Barreiro E, Orozco-Levi M, Gea J. Upregulation of pro-inflammatory cytokines in the intercostal muscles of COPD patients. Eur Respir J 2007; 30:701-7. [PMID: 17626109 DOI: 10.1183/09031936.00152005] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Muscle dysfunction is a characteristic feature of chronic obstructive pulmonary disease (COPD). Recent studies suggest that cytokines may operate as local regulators of both muscle function and regeneration. The aim of the present study was to characterise the expression of different cytokines in the external intercostal muscle of COPD. Muscle biopsies were obtained from 25 stable COPD patients and eight healthy controls. Local tumour necrosis factor (TNF)-alpha, interleukin (IL)-1beta, -6 and -10 expressions (real-time PCR and ELISA), sarcolemmal damage (immunohistochemistry), and the transcript levels of CD18 were assessed. Muscle TNF-alpha and IL-6 transcripts were significantly higher in COPD patients compared with controls, and IL-1beta and sarcolemmal damage showed a strong tendency in the same direction. Similar results were observed at protein level. The CD18 panleukocyte marker was similar in COPD and controls. Respiratory muscle function was impaired in COPD patients and it correlated to both the severity of lung function impairment and TNF-alpha muscle expression. Chronic obstructive pulmonary disease is associated with the upregulation of pro-inflammatory cytokines in the intercostal muscles. This phenomenon might be involved in respiratory muscle dysfunction.
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Affiliation(s)
- C Casadevall
- Muscle and Respiratory System Research Unit (URMAR), IMIM, Hospital del Mar, c/ Doctor Aiguader 88, E-08003, Barcelona, Spain
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Martinez-Llorens J, Curull V, Casadevall C, Minguella J, Barreiro E, Orozco-Levi M, Gea J. P-629 Decrease in the expression of structural proteins with nochanges in satellite cells in skeletal muscles of patients with early-stage non-small cell lung cancer (ES-NSCLC). Lung Cancer 2005. [DOI: 10.1016/s0169-5002(05)81122-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Casadevall C, Coronell C, Minguella J, Blanco L, Orozco-Levi M, Barreiro E, Broquetas J, Gea J. Análisis estructural y expresión de los factores de necrosis tumoral y crecimiento insulina-like en los músculos respiratorios de pacientes con EPOC. ¿Son válidas las muestras obtenidas en el curso de una toracotomía por neoplasia pulmonar localizada? Arch Bronconeumol 2004. [DOI: 10.1157/13060345] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Casadevall C, Coronell C, Minguella J, Blanco L, Orozco-Levi M, Barreiro E, Broquetas J, Gea J. Analysis of Respiratory Muscle Structure and Tumor Necrosis and Insulin-Like Growth Factor Expression in Chronic Obstructive Pulmonary Disease: Are Samples Valid if Obtained During Thoracotomy Performed Because of Localized Pulmonary Neoplasia? ACTA ACUST UNITED AC 2004; 40:209-17. [PMID: 15117620 DOI: 10.1016/s1579-2129(06)70086-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE Various methods have been used to obtain samples to study the structure of human respiratory muscles and the expression of diverse substances in them. Samples are most often obtained from autopsies, from muscle biopsies during thoracotomy performed because of a localized pulmonary lesion (TLL), and from ambulatory thoracoscopic biopsy in patients free of comorbidity (AT). The disadvantage of the first 2 of these methods lies in the possibility of interference from factors related to the patient's death in the first case or from the disease that necessitated surgery in the second. Although AT is free from the disadvantages of the other 2 methods, it is impossible to obtain samples of the diaphragm the principal respiratory muscle with this procedure. The objective of this study was to analyze the fibrous structure of the external intercostal muscle of patients with chronic obstructive pulmonary disease and to quantify the expression of the principal inflammatory cytokine tumor necrosis factor alpha (TNF-alpha)- and of insulin-like growth factor (IGF-1) in the same muscle, comparing the results obtained with TLL and AT samples. METHODS Prospective and consecutive samples were taken of the external intercostal muscle (fifth space, anterior axillary line) in 15 patients with chronic obstructive pulmonary disease (mean [SD] age 66 [6] years; forced expiratory volume in 1 second 49% [9%] of predicted; PaO2 75 [9] mm Hg). Samples were taken during TLL (8 patients, all with pulmonary neoplasms but carefully selected in order to rule out systemic effects) or TA (7 patients). Patients with serious comorbidity were excluded from the second group. Samples were processed for structural analysis of fibers (immunohistochemical and enzymatic histochemical) and genetic expression of TNF-alpha and IGF-1 (real-time polymerase chain reaction). RESULTS No differences in the structure of fibers were found between the 2 groups. No differences were observed in the expression of TNF-alpha or IGF-1. CONCLUSIONS Using rigorous criteria, the TLL method appears to be suitable for studying the structural characteristics and expression of inflammatory cytokines and growth factors in the external intercostal muscle. Moreover, it can also be inferred that TLL is probably also useful for obtaining samples of the diaphragm, a muscle which cannot currently be sampled by any alternative method.
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Affiliation(s)
- C Casadevall
- Unitat de Recerca en Múscul (URM), IMIM-Hospital del Mar, Barcelona, Spain
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Casadevall C, Coronell C, Minguella J, Blanco L, Orozco-Levi M, Barreiro E, Broquetas J, Gea J. Análisis estructural y expresión de los factores de necrosis tumoral y crecimiento insulina-like en los músculos respiratorios de pacientes con EPOC. ¿Son válidas las muestras obtenidas en el curso de una toracotomía por neoplasia pulmonar localizada? Arch Bronconeumol 2004. [DOI: 10.1016/s0300-2896(04)75507-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bernués M, Casadevall C, Caballín MR, Egozcue J, Miró R. DNA hypermethylation at the D17S5 locus is not a frequent event in human urothelial cancer. BJU Int 2002; 90:332-5. [PMID: 12133074 DOI: 10.1046/j.1464-410x.2002.02892.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To analyse the DNA methylation status and the loss of heterozygosity (LOH) at the D17S5 locus (17p13.3) in urothelial cancer. MATERIALS AND METHODS DNA methylation was assayed and LOH analysed by Southern blotting in a series of 33 transitional cell carcinomas of the bladder and renal pelvis. RESULTS DNA hypermethylation and LOH at the D17S5 locus were detected in six (18%) and 17 (52%) of the tumours, respectively. The six cases with DNA hypermethylation were of the papillary type, and four also had LOH at this locus. CONCLUSION In contrast to other epithelial tumours, DNA hypermethylation at the D17S5 locus is not a frequent event in human urothelial cancer.
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Affiliation(s)
- M Bernués
- Institut de Biologia Fonamental, Universitat Autonoma de Barcelona, Barcelona, Spain.
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Palacio J, Gáldiz JB, Bech JJ, Mariñán M, Casadevall C, Martínez P, Gea J. [Interleukin 10 and tumor necrosis factor alpha gene expression in respiratory and peripheral muscles. Relation to sarcolemmal damage]. Arch Bronconeumol 2002; 38:311-6. [PMID: 12199930 DOI: 10.1016/s0300-2896(02)75224-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Tumor necrosis factor alpha (TNF-alpha) has been implicated in loss of muscle mass in chronic obstructive pulmonary disease and other consumptive processes. TNF-alpha production would be related to inflammation arising from pulmonary disease itself or, alternatively, from smoking, and would be carried to the muscle through the blood stream. However, it has also been suggested that TNF-alpha may be expressed directly in muscle tissue. Regardless the site of production of TNF-alpha, its relation to subsequent muscle damage is unclear. OBJECTIVE We studied the expression of TNF-alpha and an interleukin inhibitor of its production (IL-10) in the main respiratory muscles and a peripheral muscle in the dog. METHOD Nine young, male Beagle dogs were included. From all animals we obtained a biopsy of the diaphragm (Dph) and external intercostal (ExtI) muscles and a leg muscle (internal vastus of the quadriceps, IntV). TNF-alpha and IL-10 gene expressions were measured through the analysis of messenger RNA levels, using reverse transcription and polymerase chain reaction. We also assessed sarcolemmal damage using intracellular fibronectin detection (immunohistochemistry). RESULTS The expression of both cytokines showed wide interindividual variability. On the one hand, TNF-alpha (was very low in Dph and ExtI (0.02 0.03 and 0.05 0.06 a.u., respectively), but relatively high in the IntV (0.14 0.08 a.u.). IL-10 expression, on the other hand was low in the Dph (0.06 0.05 a.u.) and slightly higher in the ExtI (2.7 1.9 a.u., p < 0.01) and IntV (1.6 1.7 a.u.). Sarcolemmal damage was minimal in all three muscles and was related to TNF-alpha expression in the peripheral muscle (r = 0.682, p < 0.05). CONCLUSIONS 1) TNF-alpha and IL-10 appear to be constitutively expressed within the skeletal muscle in dogs. 2) Basal TNF-alpha expression is lower in respiratory muscles than in peripheral muscles. 3) The expression in the latter is related to membrane damage.
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Affiliation(s)
- J Palacio
- Servicio de Neumología, Unidad de Investigación Respiratoria y Ambiental, Hospital del Mar, IMIM, Fisiopatología (CEXS), Universitat Pompeu Fabra, Barcelona, Spain
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Rigola MA, Fuster C, Casadevall C, Bernués M, Caballín MR, Gelabert A, Egozcue J, Miró R. Comparative genomic hybridization analysis of transitional cell carcinomas of the renal pelvis. Cancer Genet Cytogenet 2001; 127:59-63. [PMID: 11408067 DOI: 10.1016/s0165-4608(00)00426-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We used comparative genomic hybridization to analyze 10 primary tumor samples from patients with transitional cell carcinoma of the renal pelvis. The most frequent loss was located at 9q, that is, in 50% of the tumors. Gains of DNA sequences were most frequently observed in chromosome regions 1q21 approximately q23, 2p23 approximately p25, 8q21.1 approximately q22 and in the whole chromosome 20. High level amplifications at 1q21 approximately q25, 6p22 approximately p23, 8q21 approximately q22, 8q22 approximately q24.1, 11q13, and 12q14 approximately q21 were detected. Most of these regions have previously been reported to be involved in transitional cell carcinoma of the bladder, thus confirming the importance of an increasing number of chromosome imbalances in the development and progression of this type of tumors.
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Affiliation(s)
- M A Rigola
- Departament de Biologia Cel-lular, Fisiologia, Immunologia, Universitat Autònoma de Barcelona, Bellaterra E-08193, Spain.
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Bernués M, Casadevall C, Caballín MR, Miró R, Ejarque MJ, Chéchile G, Gelabert A, Egozcue J. Study of allelic losses on 3p, 6q, and 17p in human urothelial cancer. Cancer Genet Cytogenet 1999; 112:42-5. [PMID: 10432934 DOI: 10.1016/s0165-4608(98)00248-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Forty-eight transitional cell carcinomas of the bladder and three transitional cell carcinomas of the renal pelvis were examined for loss of heterozygosity (LOH) on chromosomes 3p, 6q, and 17p. The most frequent allelic loss was seen on 17p (18/36, 50%) followed by 6q (6/22, 27%), and 3p (5/22, 23%). In cases with LOH at more than one locus, the same DNA sample often varied in degree of signal reduction for missing alleles. This observation indicates that LOH studies can serve to detect intratumor heterogeneity. No correlation was found between allelic losses at these chromosome arms and tumor grade and stage. Allelic losses on 6q were associated with tumors having a solid growth pattern; in this kind of tumors, allelic losses on 3p were associated with invasion.
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Affiliation(s)
- M Bernués
- Institut de Biologia Fonamental, Universitat Autònoma de Barcelona, Spain
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Bernués M, Casadevall C, Miró R, Caballín MR, Gelabert A, Ejarque MJ, Chéchile G, Egozcue J. Analysis of 3p allelic losses in renal cell carcinomas: comparison with cytogenetic results. Cancer Genet Cytogenet 1998; 107:121-4. [PMID: 9844606 DOI: 10.1016/s0165-4608(98)00090-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
We performed a study of loss of heterozygosity (LOH) at 3p by restriction fragment length polymorphism analysis in a series of 22 renal tumors. In 11 cases, molecular results could be compared with those of cytogenetic studies. The highest frequency of allelic losses at 3p was seen in clear cell non-papillary renal tumors, whereas none of the papillary renal cell carcinomas showed LOH at 3p. Allelic losses on 3p were found to be independent of tumor grade or stage or both. One case analyzed showed a discrepancy between cytogenetic and LOH studies. This tumor displayed rearrangements of chromosome 3 and no LOH at the c-RAF-1 (close to the Von Hippel Lindau gene) locus.
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Affiliation(s)
- M Bernués
- Institut de Biologia Fonamental, Universitat Autònoma de Barcelona, Spain
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40
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Schmidt L, Duh FM, Chen F, Kishida T, Glenn G, Choyke P, Scherer S, Zhuang Z, Lubensky I, Dean M, Allikmets R, Chidambaram A, Bergerheim U, Feltis J, Casadevall C, Zamarron A, Bernues M, Richard S, Lips C, Walther M, Tsui LC, Geil L, Orcutt M, Stackhouse T, Lipan J, Slife L, Brauch H, Decker J, Niehans G, Hughson M, Moch H, Storkel S, Lerman M, Linehan W, Zbar B. Germline and Somatic Mutations in the Tyrosine Kinase Domain of the MET Proto-Oncogene in Papillary Renal Carcinomas. J Urol 1998. [DOI: 10.1016/s0022-5347(01)63909-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- L. Schmidt
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - F.-M. Duh
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - F. Chen
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - T. Kishida
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - G. Glenn
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - P. Choyke
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - S.W. Scherer
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - Z. Zhuang
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - I. Lubensky
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - M. Dean
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - R. Allikmets
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - A. Chidambaram
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - U.R. Bergerheim
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - J.T. Feltis
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - C. Casadevall
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - A. Zamarron
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - M. Bernues
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - S. Richard
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - C.J.M. Lips
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - M.M. Walther
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - L.-C. Tsui
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - L. Geil
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - M.L. Orcutt
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - T. Stackhouse
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - J. Lipan
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - L. Slife
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - H. Brauch
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - J. Decker
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - G. Niehans
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - M.D. Hughson
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - H. Moch
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - S. Storkel
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - M.I. Lerman
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - W.M. Linehan
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
| | - B. Zbar
- Intramural Research Support Program, SAIC Frederick, Laboratories of Immunobiology and Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Genetic Epidemiology Branch and Department of Diagnostic Radiology, Laboratory of Pathology, Surgery Branch, National Institutes of Health, Bethesda, Maryland, Department of Genetics, Hospital for Sick Children, Toronto, Department of Laboratory Medicine, Credit Valley Hospital, Mississauga, Ontario, Canada,
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Schmidt L, Duh FM, Chen F, Kishida T, Glenn G, Choyke P, Scherer SW, Zhuang Z, Lubensky I, Dean M, Allikmets R, Chidambaram A, Bergerheim UR, Feltis JT, Casadevall C, Zamarron A, Bernues M, Richard S, Lips CJM, Walther MM, Tsui LC, Geil L, Orcutt ML, Stackhouse T, Lipan J, Slife L, Brauch H, Decker J, Niehans G, Hughson MD, Moch H, Storkel S, Lerman MI, Linehan WM, Zbar B. Germline and Somatic Mutations in the Tyrosine Kinase Domain of the MET Proto-Oncogene in Papillary Renal Carcinomas. J Urol 1998. [DOI: 10.1097/00005392-199802001-00035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Carrasco N, Casadevall C, Bernues M, Nohales GL, Gelabert-Mas A. Constitutional chromosomal instability: a case with three primary and sequential cancers. Br J Urol 1998; 81:172. [PMID: 9467502 DOI: 10.1046/j.1464-410x.1998.00354.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- N Carrasco
- Department of Urology, Hospital del Mar, Barcelona, Spain
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Schmidt L, Duh FM, Chen F, Kishida T, Glenn G, Choyke P, Scherer SW, Zhuang Z, Lubensky I, Dean M, Allikmets R, Chidambaram A, Bergerheim UR, Feltis JT, Casadevall C, Zamarron A, Bernues M, Richard S, Lips CJ, Walther MM, Tsui LC, Geil L, Orcutt ML, Stackhouse T, Lipan J, Slife L, Brauch H, Decker J, Niehans G, Hughson MD, Moch H, Storkel S, Lerman MI, Linehan WM, Zbar B. Germline and somatic mutations in the tyrosine kinase domain of the MET proto-oncogene in papillary renal carcinomas. Nat Genet 1997; 16:68-73. [PMID: 9140397 DOI: 10.1038/ng0597-68] [Citation(s) in RCA: 1094] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Hereditary papillary renal carcinoma (HPRC) is a recently recognized form of inherited kidney cancer characterized by a predisposition to develop multiple, bilateral papillary renal tumours. The pattern of inheritance of HPRC is consistent with autosomal dominant transmission with reduced penetrance. HPRC is histologically and genetically distinct from two other causes of inherited renal carcinoma, von Hippel-Lindau disease (VHL) and the chromosome translocation (3;8). Malignant papillary renal carcinomas are characterized by trisomy of chromosomes 7, 16 and 17, and in men, by loss of the Y chromosome. Inherited and sporadic clear cell renal carcinomas are characterized by inactivation of both copies of the VHL gene by mutation, and/or by hypermethylation. We found that the HPRC gene was located at chromosome 7q31.1-34 in a 27-centimorgan (cM) interval between D7S496 and D7S1837. We identified missense mutations located in the tyrosine kinase domain of the MET gene in the germline of affected members of HPRC families and in a subset of sporadic papillary renal carcinomas. Three mutations in the MET gene are located in codons that are homologous to those in c-kit and RET, proto-oncogenes that are targets of naturally-occurring mutations. The results suggest that missense mutations located in the MET proto-oncogene lead to constitutive activation of the MET protein and papillary renal carcinomas.
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Affiliation(s)
- L Schmidt
- Intramural Research Support Program, SAIC Frederick, MD, USA
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Bernués M, Casadevall C, Miró R, Caballín MR, Villavicencio H, Salvador J, Zamarrón A, Egozcue J. Cytogenetic characterization of a familial papillary renal cell carcinoma. Cancer Genet Cytogenet 1995; 84:123-7. [PMID: 8536226 DOI: 10.1016/0165-4608(95)00044-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
We describe the first case of a familial renal cell carcinoma cytogenetically characterized as a papillary renal cell carcinoma. Cytogenetic and molecular studies were performed on primary renal cell carcinomas and normal kidney tissue from two members of the same family. Both patients showed a normal constitutional karyotype. The two tumors analyzed from the first patient showed the numerical chromosome alterations characteristic of papillary renal cell carcinomas. From the four tumors analyzed in the second patient, three of them presented the cytogenetic pattern of papillary renal cell tumors, and the fourth showed only structural chromosome abnormalities with the presence of a del(7)t(7;7) or dup(7) in all metaphases analyzed. Chromosome 3 was cytogenetically unaffected in all tumors from both patients, and restriction fragment length polymorphism analysis performed with probe pEFD145 (3p21.1-p23) did not detect any loss of heterozygosity.
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Affiliation(s)
- M Bernués
- Institut de Biologia Fonamental, Universitat Autònoma de Barcelona, Spain
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Bernués M, Casadevall C, Miró R, Caballín MR, Gelabert A, Egozcue J. A case of transitional cell carcinoma of the bladder with a del(9)(q11q21.2). Cancer Genet Cytogenet 1993; 69:76-7. [PMID: 8374907 DOI: 10.1016/0165-4608(93)90120-b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Monosomy for chromosome 9, as well as loss of heterozygosity for markers on this chromosome, has been detected in a high percentage of transitional cell carcinomas (TCC) of the bladder. We report a case of a TCC of the bladder with an interstitial del(9)(q11q21.2) that could be indicative of the presence of a putative tumor-suppressor gene related to bladder tumor progression. To elucidate the role of chromosome 9 in bladder tumors, it would be interesting to study a possible loss of heterozygosity in this chromosome region.
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Affiliation(s)
- M Bernués
- Institut de Biologia Fonamental Vincent Villar Palasí, Universitat Autònoma de Barcelona, Bellaterra, Spain
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Nicolaides NC, Correa I, Casadevall C, Travali S, Soprano KJ, Calabretta B. The Jun family members, c-Jun and JunD, transactivate the human c-myb promoter via an Ap1-like element. J Biol Chem 1992; 267:19665-72. [PMID: 1527086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The c-myb protooncogene, which is preferentially expressed in hematopoietic cells at the G1/S boundary of the cell cycle, encodes a transcriptional activator that functions via DNA binding. The regulatory mechanisms governing this specific pattern of expression are not fully understood, although human c-myb expression appears to be positively autoregulated via myb-binding sites in the 5'-flanking region of the c-myb gene (Nicolaides, N. C., Gualdi, R., Casadevall, C., Manzella, L., and Calabretta, B. (1991) Mol. Cell. Biol. 11, 6166-6176). To determine the contribution of other transcription regulators such as JUN family members in the control of c-myb expression, transient expression assays were carried out which revealed a 6- to a 15-fold enhancement by c-Jun and JunD, but not JunB, in chloramphenicol acetyltransferase reporter gene expression driven by different segments of the human c-myb 5'-flanking region. An Ap1-like element located at nucleotide -149 from the c-myb initiation site appears to be required for this transactivation upon binding to a nuclear protein complex containing c-Jun and JunD, since site-directed mutations of this Ap1-like element abolished c-Jun and JunD binding and transactivation. Exposure of phytohemagglutinin-stimulated peripheral blood mononuclear cells to c-jun and junD antisense oligodeoxynucleotides resulted in a 46 and 43% inhibition of T-lymphocyte proliferation that was accompanied by a decrease in c-myb mRNA levels as compared with sense-treated cultures. Because T-lymphocytes induced to proliferate express c-jun and junD before c-myb, these data suggest a mechanism whereby c-Jun and JunD contribute to the transcriptional activation of c-myb that, in turn, is maintained at the G1/S transition and during S phase by positive autoregulation.
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Affiliation(s)
- N C Nicolaides
- Jefferson Cancer Institute, Thomas Jefferson University, Philadelphia, Pennsylvania 19140
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Nicolaides NC, Correa I, Casadevall C, Travail S, Soprano KJ, Calabretta B. 43. JUND transactivates reporter gene expression driven by c-myb promoter via an Ap1-like element. Pharmacotherapy 1992. [DOI: 10.1016/0753-3322(92)90128-t] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Nicolaides NC, Gualdi R, Casadevall C, Manzella L, Calabretta B. Positive autoregulation of c-myb expression via Myb binding sites in the 5' flanking region of the human c-myb gene. Mol Cell Biol 1991; 11:6166-76. [PMID: 1944282 PMCID: PMC361795 DOI: 10.1128/mcb.11.12.6166-6176.1991] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The nuclear proto-oncogene c-myb is preferentially expressed in lymphohematopoietic cells, in which it plays an important role in the processes of differentiation and proliferation. The mechanism(s) that regulates c-myb expression is not fully understood, although in mouse cells a regulatory mechanism involves a transcriptional block in the first intron. To analyze the contribution of the 5' flanking sequences in regulating the expression of the human c-myb gene, we isolated a genomic clone containing extensive 5' flanking sequences, the first exon, and a large portion of the first intron. Sequence analysis of a subcloned 1.3-kb BamHI insert corresponding to 687 nucleotides of the 5' flanking sequence, the entire first exon, and 300 nucleotides of the first intron revealed the presence of closely spaced putative Myb binding sites within a segment extending from nucleotides -616 to -575 upstream from the cap site. A 165-bp segment containing these putative Myb binding sites was linked to a human thymidine kinase (TK) cDNA driven by a low-activity proliferating cell nuclear antigen promoter and cotransfected into TK- ts13 cells with a plasmid in which a full-length human c-myb cDNA is driven by the early simian virus 40 promoter; Myb inducibility of TK mRNA expression was observed both in transient expression assays and in stable transformants. The highest level of inducibility was detected when the 165-bp fragment was placed 138 bp upstream of the proliferating cell nuclear antigen promoter-TK cDNA reporter unit or 3' of the TK cDNA. Mutation of the putative Myb binding sites greatly reduced c-myb transactivation of TK mRNA expression and specifically reduced the binding of in vitro-translated Myb protein at those sites. Finally, c-myb transactivated TK mRNA expression driven by a segment of the authentic c-myb 5' flanking region containing the Myb binding sites. These data suggest that human c-myb maintains high levels of Myb protein in cells that require this gene product for proliferation and/or differentiation by an autoregulatory mechanism involving Myb binding sites in the 5' flanking region.
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Affiliation(s)
- N C Nicolaides
- Jefferson Cancer Institute, Thomas Jefferson University, Philadelphia, Pennsylvania 19107
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Ottavio L, Chang CD, Rizzo MG, Travali S, Casadevall C, Baserga R. Importance of introns in the growth regulation of mRNA levels of the proliferating cell nuclear antigen gene. Mol Cell Biol 1990; 10:303-9. [PMID: 1967186 PMCID: PMC360738 DOI: 10.1128/mcb.10.1.303-309.1990] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The steady-state mRNA levels of the proliferating cell nuclear antigen (PCNA) gene are growth regulated. We have begun to identify the elements in the human PCNA gene that participate in its growth regulation by transfecting appropriate constructs in BALB/c3T3 cells. The results can be summarized as follows. (i) The 400 base pairs of the 5'-flanking sequence of the human PCNA gene upstream of the preferred cap site are sufficient for directing expression of a heterologous cDNA (S. Travali, D.-H. Ku, M. G. Rizzo, L. Ottavio, R. Baserga, and B. Calabretta, J. Biol. Chem. 264:7466-7472, 1989). (ii) Intron 4 is necessary for the proper regulation of PCNA mRNA levels in G0 cells. Removal of intron 4 leads to abnormally high levels of PCNA mRNA in serum-deprived cells, although the shortened PCNA gene with its own promoter is still responsive to serum stimulation. (iii) The presence of introns also increases the steady-state levels of PCNA mRNA in proliferating cells. These results are especially interesting for two reasons: (i) because of the extensive sequence similarities among introns and between introns and exons of the human PCNA gene, and (ii) because, usually, the presence of introns leads to increased expression, whereas in this case, removal of intron 4 caused an increase in mRNA levels, and this occurred only in quiescent cells.
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Affiliation(s)
- L Ottavio
- Department of Pathology, Temple University Medical School, Philadelphia, Pennsylvania 19140
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Sitaramayya A, Casadevall C, Bennett N, Hakki SI. Contribution of the guanosinetriphosphatase activity of G-protein to termination of light-activated guanosine cyclic 3',5'-phosphate hydrolysis in retinal rod outer segments. Biochemistry 1988; 27:4880-7. [PMID: 2844243 DOI: 10.1021/bi00413a044] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Light activation of GTP binding to G-protein and its eventual hydrolysis are hypothesized to lead to activation and inactivation of cGMP phosphodiesterase (PDE) in vertebrate rod disk membranes (RDM). However, the reported GTPase rate of 3 per minute is too slow to account for the observed rapid inactivation of PDE. Our investigations on GTPase activity showed that RDM isolated in the dark have considerable dark GTPase activity, which is enhanced by light. In dark and light, the enzyme exhibits biphasic substrate dependence with two Km's for GTP of 2-3 and 40-80 microM at 22 degrees C and less than 1 and 10-25 microM at 37 degrees C. The Km's were not influenced by light. On the basis of G-protein content of the RDM, the Vmax's for the two activities at 37 degrees C in light are 4-5 and 20-30 GTPs hydrolyzed per minute per G-protein. RDM washed free of soluble and peripheral proteins do not have measurable GTPase activity in the dark or light. Purified G-protein alone also did not turn over GTP, apparently because bleached rhodopsin is required for it to bind GTP. Reconstitution of washed membranes with purified G-protein restores both the low- and high-Km GTPase activities. Inactivation of G-protein as measured by PDE turnoff and dissociation signal recovery is found to be faster at higher than lower [GTP], consistent with the observation that the higher GTPase activity associated with the higher Km alos resides in the G-protein.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- A Sitaramayya
- Pennsylvania College of Optometry, Philadelphia 19141
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