1
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Gill MR, Jarman PJ, Hearnden V, Fairbanks SD, Bassetto M, Maib H, Palmer J, Ayscough KR, Thomas JA, Smythe C. A Ruthenium(II) Polypyridyl Complex Disrupts Actin Cytoskeleton Assembly and Blocks Cytokinesis. Angew Chem Int Ed Engl 2022; 61:e202117449. [PMID: 35416386 PMCID: PMC9323417 DOI: 10.1002/anie.202117449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Indexed: 11/05/2022]
Abstract
The dinuclear RuII complex [(Ru(phen)2)2(tpphz)]4+ (phen=1,10‐phenanthroline, tpphz=tetrapyridophenazine) “RuRuPhen” blocks the transformation of G‐actin monomers to F‐actin filaments with no disassembly of pre‐formed F‐actin. Molecular docking studies indicate multiple RuRuPhen molecules bind to the surface of G‐actin but not the binding pockets of established actin polymerisation inhibitors. In cells, addition of RuRuPhen causes rapid disruption to actin stress fibre organisation, compromising actomyosin contractility and cell motility; due to this effect RuRuPhen interferes with late‐stage cytokinesis. Immunofluorescent microscopy reveals that RuRuPhen causes cytokinetic abscission failure by interfering with endosomal sorting complexes required for transport (ESCRT) complex recruitment.
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Affiliation(s)
- Martin R. Gill
- Department of Chemistry Faculty of Science and Engineering Swansea University UK
| | - Paul J. Jarman
- Department of Biomedical Science University of Sheffield UK
| | - Vanessa Hearnden
- Department of Materials Science and Engineering University of Sheffield UK
| | | | - Marcella Bassetto
- Department of Chemistry Faculty of Science and Engineering Swansea University UK
| | - Hannes Maib
- Department of Biomedical Science University of Sheffield UK
| | - John Palmer
- Department of Biomedical Science University of Sheffield UK
| | | | | | - Carl Smythe
- Department of Biomedical Science University of Sheffield UK
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2
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Gill MR, Jarman PJ, Hearnden V, Fairbanks SD, Bassetto M, Maib H, Palmer J, Ayscough KR, Thomas JA, Smythe C. A Ruthenium(II) Polypyridyl Complex Disrupts Actin Cytoskeleton Assembly and Blocks Cytokinesis. ANGEWANDTE CHEMIE (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 134:e202117449. [PMID: 38505667 PMCID: PMC10947085 DOI: 10.1002/ange.202117449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Indexed: 11/10/2022]
Abstract
The dinuclear RuII complex [(Ru(phen)2)2(tpphz)]4+ (phen=1,10-phenanthroline, tpphz=tetrapyridophenazine) "RuRuPhen" blocks the transformation of G-actin monomers to F-actin filaments with no disassembly of pre-formed F-actin. Molecular docking studies indicate multiple RuRuPhen molecules bind to the surface of G-actin but not the binding pockets of established actin polymerisation inhibitors. In cells, addition of RuRuPhen causes rapid disruption to actin stress fibre organisation, compromising actomyosin contractility and cell motility; due to this effect RuRuPhen interferes with late-stage cytokinesis. Immunofluorescent microscopy reveals that RuRuPhen causes cytokinetic abscission failure by interfering with endosomal sorting complexes required for transport (ESCRT) complex recruitment.
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Affiliation(s)
- Martin R. Gill
- Department of ChemistryFaculty of Science and EngineeringSwansea UniversityUK
| | - Paul J. Jarman
- Department of Biomedical ScienceUniversity of SheffieldUK
| | - Vanessa Hearnden
- Department of Materials Science and EngineeringUniversity of SheffieldUK
| | | | - Marcella Bassetto
- Department of ChemistryFaculty of Science and EngineeringSwansea UniversityUK
| | - Hannes Maib
- Department of Biomedical ScienceUniversity of SheffieldUK
| | - John Palmer
- Department of Biomedical ScienceUniversity of SheffieldUK
| | | | | | - Carl Smythe
- Department of Biomedical ScienceUniversity of SheffieldUK
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3
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Szymańska M, Kubicki M, Roviello GN, Consiglio G, Fik-Jaskółka MA, Patroniak V. New Cu( i) square grid-type and Ni( ii) triangle-type complexes: synthesis and characterization of effective binders of DNA and serum albumins. Dalton Trans 2022; 51:15648-15658. [DOI: 10.1039/d2dt02271k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metallosupramolecular square grid-type complex [Cu4L4]4+ and triangle-type complex [Ni3L3]6+ as a potential strategy for obtaining versatile metal-based DNA, Serum Albumin (SA) and DNA binders.
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Affiliation(s)
- Martyna Szymańska
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Maciej Kubicki
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Giovanni N. Roviello
- Institute of Biostructures and Bioimaging – CNR, Area di Ricerca site and Headquartes, Via Tommaso De Amicis, 95, 80145 Napoli, Italy
| | - Giuseppe Consiglio
- Dipartimento di Scienze Chimiche, Università degli studi di Catania, viale A. Doria 6, I-95125 Catania, Italy
| | - Marta A. Fik-Jaskółka
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Violetta Patroniak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
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4
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de Vink PJ, van der Hek T, Brunsveld L. Light-driven release of cucurbit[8]uril from a bivalent cage. Chem Sci 2021; 12:6726-6731. [PMID: 34040748 PMCID: PMC8132991 DOI: 10.1039/d1sc01410b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 04/10/2021] [Indexed: 12/03/2022] Open
Abstract
Temporal control over supramolecular systems has great potential for the modulation of binding and assembly events, such as providing orthogonal control over protein activity. Especially light controlled triggering provides unique entries for supramolecular systems to interface in a controlled manner with enzymes. Here we report on the light-induced release of cucurbit[8]uril (CB[8]) from a bivalent cage molecule and its subsequent activation of a proteolytic enzyme, caspase-9, that itself is unresponsive to light. Central to the design is the bivalent binding of the cage with high affinity to CB[8], 100-fold stronger than the UV-inactivated products. The affinity switching occurs in the (sub-)micromolar concentration regime, matching the concentration characteristics required for dimerizing and activating caspase-9 by CB[8]. The light-responsive caged CB[8] concept presented offers a novel platform for tuning and application of switchable cucurbiturils and beyond.
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Affiliation(s)
- Pim J de Vink
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology P. O. Box 513 5600 MB Eindhoven The Netherlands
| | - Tim van der Hek
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology P. O. Box 513 5600 MB Eindhoven The Netherlands
| | - Luc Brunsveld
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology P. O. Box 513 5600 MB Eindhoven The Netherlands
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5
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Tököli A, Mag B, Bartus É, Wéber E, Szakonyi G, Simon MA, Czibula Á, Monostori É, Nyitray L, Martinek TA. Proteomimetic surface fragments distinguish targets by function. Chem Sci 2020; 11:10390-10398. [PMID: 34094300 PMCID: PMC8162404 DOI: 10.1039/d0sc03525d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 09/09/2020] [Indexed: 11/21/2022] Open
Abstract
The fragment-centric design promises a means to develop complex xenobiotic protein surface mimetics, but it is challenging to find locally biomimetic structures. To address this issue, foldameric local surface mimetic (LSM) libraries were constructed. Protein affinity patterns, ligand promiscuity and protein druggability were evaluated using pull-down data for targets with various interaction tendencies and levels of homology. LSM probes based on H14 helices exhibited sufficient binding affinities for the detection of both orthosteric and non-orthosteric spots, and overall binding tendencies correlated with the magnitude of the target interactome. Binding was driven by two proteinogenic side chains and LSM probes could distinguish structurally similar proteins with different functions, indicating limited promiscuity. Binding patterns displayed similar side chain enrichment values to those for native protein-protein interfaces implying locally biomimetic behavior. These analyses suggest that in a fragment-centric approach foldameric LSMs can serve as useful probes and building blocks for undruggable protein interfaces.
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Affiliation(s)
- Attila Tököli
- Department of Medical Chemistry, University of Szeged Dóm tér 8 H6720 Szeged Hungary
| | - Beáta Mag
- Department of Medical Chemistry, University of Szeged Dóm tér 8 H6720 Szeged Hungary
| | - Éva Bartus
- Department of Medical Chemistry, University of Szeged Dóm tér 8 H6720 Szeged Hungary
- MTA-SZTE Biomimetic Systems Research Group, University of Szeged Dóm tér 8 H6720 Szeged Hungary
| | - Edit Wéber
- Department of Medical Chemistry, University of Szeged Dóm tér 8 H6720 Szeged Hungary
| | - Gerda Szakonyi
- Institute of Pharmaceutical Analysis, University of Szeged Somogyi u. 4. H6720 Szeged Hungary
| | - Márton A Simon
- Department of Biochemistry, Eötvös Loránd University Pázmány Péter sétány 1/C H1077 Budapest Hungary
| | - Ágnes Czibula
- Lymphocyte Signal Transduction Laboratory, Institute of Genetics, Biological Research Centre Temesvári krt. 62 H6726 Szeged Hungary
| | - Éva Monostori
- Lymphocyte Signal Transduction Laboratory, Institute of Genetics, Biological Research Centre Temesvári krt. 62 H6726 Szeged Hungary
| | - László Nyitray
- Department of Biochemistry, Eötvös Loránd University Pázmány Péter sétány 1/C H1077 Budapest Hungary
| | - Tamás A Martinek
- Department of Medical Chemistry, University of Szeged Dóm tér 8 H6720 Szeged Hungary
- MTA-SZTE Biomimetic Systems Research Group, University of Szeged Dóm tér 8 H6720 Szeged Hungary
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6
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Kovalska V, Kuperman M, Losytskyy M, Vakarov S, Potocki S, Yarmoluk S, Voloshin Y, Varzatskii O, Gumienna-Kontecka E. Induced CD of iron(ii) clathrochelates: sensing of the structural and conformational alterations of serum albumins. Metallomics 2020; 11:338-348. [PMID: 30516230 DOI: 10.1039/c8mt00278a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An ability of inherently achiral macrobicyclic metal complexes iron(ii) clathrochelates to acquire an induced CD (ICD) output in the visible spectral range upon interaction with bovine serum albumin (BSA) was recently discovered. In the present work, the CD-reporting properties of iron(ii) clathrochelates to proteins and the thermodynamic parameters of their binding to albumins are evaluated. It is shown that iron(ii) clathrochelates functionalized by six ribbed carboxyphenylsulfide groups are able to discriminate between serum albumins of relative structure (here human and bovine albumins) by giving distinct ICD spectra. Besides, by the variation of the shape and intensity of CD bands, these cage metal complexes reflect the pH-triggered alterations of the tertiary structure of albumins. The constitutional isomerism (ortho-, meta- or para-isomers) of terminal carboxyphenylsulfide groups of iron(ii) clathrochelates strongly affects both the character of their ICD output upon binding with proteins and the parameters of the formed guest-host associates. Using isothermal titration calorimetry, it was determined that cage metal complexes bearing meta- and ortho-isomers of carboxyphenylsulfide groups possess higher association constants (Ka ∼ 2 × 104 M-1) and clathrochelate-to-BSA binding ratios (n = 2) than the para-isomer (Ka ∼ 5 × 103 M-1, n = 1). The iron(ii) clathrochelates are suggested to be potential molecular three-dimensional scaffolds for the design of CD-sensitive reporters able to recognize specific elements of protein surfaces.
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Affiliation(s)
- Vladyslava Kovalska
- Institute of Molecular Biology and Genetics, NASU, 150 Zabolotnogo St., 03143 Kyiv, Ukraine.
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7
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Kovalska V, Vakarov S, Losytskyy M, Kuperman M, Chornenka N, Toporivska Y, Gumienna-Kontecka E, Voloshin Y, Varzatskii O, Mokhir A. Dicarboxyl-terminated iron(ii) clathrochelates as ICD-reporters for globular proteins. RSC Adv 2019; 9:24218-24230. [PMID: 35527894 PMCID: PMC9069836 DOI: 10.1039/c9ra04102h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 07/26/2019] [Indexed: 01/07/2023] Open
Abstract
Cage metal complexes iron(ii) clathrochelates, which are inherently CD silent, were discovered to demonstrate intensive output in induced circular dichroism (ICD) spectra upon their assembly to albumins. With the aim to design clathrochelates as protein-sensitive CD reporters, the approach for the functionalization of one chelate α-dioximate fragment of the clathrochelate framework with two non-equivalent substituents was developed, and constitutional isomers of clathrochelate with two non-equivalent carboxyphenylsulfide groups were synthesized. The interaction of designed iron(ii) clathrochelates and their symmetric homologues with globular proteins (serum albumins, lysozyme, β-lactoglobulin (BLG), trypsin, insulin) was studied by protein fluorescence quenching and CD techniques. A highly-intensive ICD output of the clathrochelates was observed upon their association with albumins and BLG. It was shown that in the presence of BLG, different clathrochelate isomers gave spectra of inverted signs, indicating the stabilization of opposite configurations (Λ or Δ) of the clathrochelate framework in the assembly with this protein. So, we suggest that the isomerism of the terminal carboxy group determined preferable configurations of the clathrochelate framework for the fixation in the protein binding site. MALDI TOF results show the formation of BLG-clathrochelate complex with ratio 1 : 1. Based on the docking simulations, the binding of the clathrochelate molecule (all isomers) to the main BLG binding site (calyx) in its open conformation is suggested. The above results point that the variation of the ribbed substituents at the clathrochelate framework is an effective tool to achieve the specificity of clathrochelate ICD reporting properties to the target protein.
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Affiliation(s)
- Vladyslava Kovalska
- Institute of Molecular Biology and Genetics, NASU 150 Zabolotnogo St. 03143 Kyiv Ukraine
| | - Serhii Vakarov
- Princeton Biomolecular Research Labs 26A Saperne Pole St. 01042 Kyiv Ukraine
- V.I. Vernadsky Institute of General and Inorganic Chemistry, NASU 32/34 Palladin Av. 03142 Kyiv Ukraine
| | - Mykhaylo Losytskyy
- Institute of Molecular Biology and Genetics, NASU 150 Zabolotnogo St. 03143 Kyiv Ukraine
| | - Marina Kuperman
- Institute of Molecular Biology and Genetics, NASU 150 Zabolotnogo St. 03143 Kyiv Ukraine
| | - Nina Chornenka
- Princeton Biomolecular Research Labs 26A Saperne Pole St. 01042 Kyiv Ukraine
- V.I. Vernadsky Institute of General and Inorganic Chemistry, NASU 32/34 Palladin Av. 03142 Kyiv Ukraine
| | - Yuliya Toporivska
- Faculty of Chemistry, University of Wroclaw 14 F. Joliot-Curie St. 50-383 Wroclaw Poland
| | | | - Yan Voloshin
- Nesmeyanov Institute of Organoelement Compounds RAS 28 Vavilova St. 119991 Moscow Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences 31 Leninsky Prosp. 119991 Moscow Russia
| | - Oleg Varzatskii
- V.I. Vernadsky Institute of General and Inorganic Chemistry, NASU 32/34 Palladin Av. 03142 Kyiv Ukraine
| | - Andriy Mokhir
- Organic Chemistry II, Friedrich-Alexander-University of Erlangen-Nuremberg Henkestr. 42 91054 Erlangen Germany
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8
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Hewitt SH, Liu R, Butler SJ. Recognition of proximally phosphorylated tyrosine residues and continuous analysis of phosphatase activity using a stable europium complex. Supramol Chem 2018; 30:765-771. [PMID: 33173266 PMCID: PMC7116342 DOI: 10.1080/10610278.2017.1410548] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 11/16/2017] [Indexed: 10/18/2022]
Abstract
The recognition of proteins and their post-translational modifications using synthetic molecules is an active area of research. A common post-translational modification is the phosphorylation of serine, threonine or tyrosine residues. The phosphorylation of proximal tyrosine residues occurs in over 1000 proteins in the human proteome, including in disease-related proteins, so the recognition of this motif is of particular interest. We have developed a luminescent europium(III) complex, [Eu.1]+ , capable of the discrimination of proximally phosphorylated tyrosine residues, from analogous mono- and non-phosphorylated tyrosine residues, more distantly-related phosphotyrosine residues and over proximally phosphorylated serine and threonine residues. [Eu.1]+ was used to continuously monitor the phosphatase catalysed dephosphorylation of a peptide containing proximally phosphorylated tyrosine residues.
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Affiliation(s)
- Sarah H. Hewitt
- Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK
| | - Roanna Liu
- Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK
| | - Stephen J. Butler
- Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK
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9
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Zhu R, Regeni I, Holstein JJ, Dittrich B, Simon M, Prévost S, Gradzielski M, Clever GH. Catenation and Aggregation of Multi-Cavity Coordination Cages. Angew Chem Int Ed Engl 2018; 57:13652-13656. [DOI: 10.1002/anie.201806047] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Rongmei Zhu
- Faculty of Chemistry and Chemical Biology; TU Dortmund University; Otto-Hahn-Strasse 6 44227 Dortmund Germany
- Current affiliation: School of Chemistry and Chemical Engineering; Yangzhou University; Yangzhou 225002 Jiangsu PR China
| | - Irene Regeni
- Faculty of Chemistry and Chemical Biology; TU Dortmund University; Otto-Hahn-Strasse 6 44227 Dortmund Germany
| | - Julian J. Holstein
- Faculty of Chemistry and Chemical Biology; TU Dortmund University; Otto-Hahn-Strasse 6 44227 Dortmund Germany
| | - Birger Dittrich
- Institute for Inorganic Chemistry; Heinrich-Heine University Düsseldorf; Universitätsstrasse 1 40225 Düsseldorf Germany
| | - Miriam Simon
- Stranski-Laboratorium für Physikalische und Theoretische Chemie; Institut für Chemie; Technische Universität Berlin; 10623 Berlin Germany
| | - Sylvain Prévost
- Institut Max von Laue-Paul Langevin (ILL); 71 avenue des Martyrs 38042 Grenoble France
| | - Michael Gradzielski
- Stranski-Laboratorium für Physikalische und Theoretische Chemie; Institut für Chemie; Technische Universität Berlin; 10623 Berlin Germany
| | - Guido H. Clever
- Faculty of Chemistry and Chemical Biology; TU Dortmund University; Otto-Hahn-Strasse 6 44227 Dortmund Germany
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10
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Zhu R, Regeni I, Holstein JJ, Dittrich B, Simon M, Prévost S, Gradzielski M, Clever GH. Catenierung und Aggregation von Koordinationskäfigen mit mehreren Kavitäten. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806047] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Rongmei Zhu
- Fakultät für Chemie und Chemische Biologie; TU Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Deutschland
- Derzeitige Zugehörigkeit: School of Chemistry and Chemical Engineering; Yangzhou University; Jiangsu VR China
| | - Irene Regeni
- Fakultät für Chemie und Chemische Biologie; TU Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Deutschland
| | - Julian J. Holstein
- Fakultät für Chemie und Chemische Biologie; TU Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Deutschland
| | - Birger Dittrich
- Institut für Anorganische Chemie; Heinrich-Heine Universität Düsseldorf; Deutschland
| | - Miriam Simon
- Stranski-Laboratorium für Physikalische und Theoretische Chemie; Institut für Chemie; Technische Universität Berlin; Deutschland
| | - Sylvain Prévost
- Institut Max von Laue - Paul Langevin (ILL); 71 Avenue des Martyrs Grenoble Frankreich
| | - Michael Gradzielski
- Stranski-Laboratorium für Physikalische und Theoretische Chemie; Institut für Chemie; Technische Universität Berlin; Deutschland
| | - Guido H. Clever
- Fakultät für Chemie und Chemische Biologie; TU Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Deutschland
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11
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Mailhot R, Traviss‐Pollard T, Pal R, Butler SJ. Cationic Europium Complexes for Visualizing Fluctuations in Mitochondrial ATP Levels in Living Cells. Chemistry 2018; 24:10745-10755. [PMID: 29761917 PMCID: PMC6175470 DOI: 10.1002/chem.201801008] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 05/10/2018] [Indexed: 01/02/2023]
Abstract
The ability to study cellular metabolism and enzymatic processes involving adenosine triphosphate (ATP) is impeded by the lack of imaging probes capable of signalling the concentration and distribution of intracellular ATP rapidly, with high sensitivity. We report here the first example of a luminescent lanthanide complex capable of visualizing changes in the concentration of ATP in the mitochondria of living cells. Four cationic europium(III) complexes [Eu.1-4]+ have been synthesized and their binding capabilities towards nucleoside polyphosphate anions examined in aqueous solution at physiological pH. Complexes [Eu.1]+ and [Eu.3]+ bearing hydrogen bond donor groups in the pendant arms showed excellent discrimination between ATP, ADP and monophosphate species. Complex [Eu.3]+ showed relatively strong binding to ATP (logKa =5.8), providing a rapid, long-lived luminescent signal that enabled its detection in a highly competitive aqueous medium containing biologically relevant concentrations of Mg2+ , ADP, GTP, UTP and human serum albumin. This EuIII complex responds linearly to ATP within the physiological concentration range (1-5 mm), and was used to continuously monitor the apyrase-catalyzed hydrolysis of ATP to ADP in vitro. We demonstrate that [Eu.3]+ can permeate mammalian (NIH-3T3) cells efficiently and localize to the mitochondria selectively, permitting real-time visualization of elevated mitochondrial ATP levels following treatment with a broad spectrum kinase inhibitor, staurosporine, as well as depleted ATP levels upon treatment with potassium cyanide under glucose starvation conditions.
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Affiliation(s)
- Romain Mailhot
- Department of ChemistryLoughborough UniversityEpinal WayLoughboroughLE11 3TUUK
| | | | - Robert Pal
- Department of ChemistryDurham UniversitySouth RoadDurhamDH1 3LEUK
| | - Stephen J. Butler
- Department of ChemistryLoughborough UniversityEpinal WayLoughboroughLE11 3TUUK
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12
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Drożdż W, Walczak A, Bessin Y, Gervais V, Cao XY, Lehn JM, Ulrich S, Stefankiewicz AR. Multivalent Metallosupramolecular Assemblies as Effective DNA Binding Agents. Chemistry 2018; 24:10802-10811. [DOI: 10.1002/chem.201801552] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Wojciech Drożdż
- Faculty of Chemistry; Adam Mickiewicz University; Umultowska 89b 61-614 Poznań Poland
- Center for Advanced Technologies; Adam Mickiewicz University; Umultowska 89c 61-614 Poznań Poland
| | - Anna Walczak
- Faculty of Chemistry; Adam Mickiewicz University; Umultowska 89b 61-614 Poznań Poland
- Center for Advanced Technologies; Adam Mickiewicz University; Umultowska 89c 61-614 Poznań Poland
| | - Yannick Bessin
- IBMM, UMR 5247; Université de Montpellier; CNRS; ENSCM, UM; Montpellier France
| | - Virginie Gervais
- IPBS (Institut de Pharmacologie et de Biologie Structurale); Université de Toulouse; CNRS; UPS; 205 route de Narbonne 31077 Toulouse France
| | - Xiao-Yu Cao
- Laboratoire de Chimie Supramoléculaire; Institut de Science et d'Ingénierie Supramoléculaires (ISIS); UMR 7006; CNRS; Université de Strasbourg; 8 allée Gaspard Monge 67000 Strasbourg France
| | - Jean-Marie Lehn
- Laboratoire de Chimie Supramoléculaire; Institut de Science et d'Ingénierie Supramoléculaires (ISIS); UMR 7006; CNRS; Université de Strasbourg; 8 allée Gaspard Monge 67000 Strasbourg France
| | - Sébastien Ulrich
- IBMM, UMR 5247; Université de Montpellier; CNRS; ENSCM, UM; Montpellier France
| | - Artur R. Stefankiewicz
- Faculty of Chemistry; Adam Mickiewicz University; Umultowska 89b 61-614 Poznań Poland
- Center for Advanced Technologies; Adam Mickiewicz University; Umultowska 89c 61-614 Poznań Poland
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13
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Kobayashi Y, Hoshino M, Kameda T, Kobayashi K, Akaji K, Inuki S, Ohno H, Oishi S. Use of a Compact Tripodal Tris(bipyridine) Ligand to Stabilize a Single-Metal-Centered Chirality: Stereoselective Coordination of Iron(II) and Ruthenium(II) on a Semirigid Hexapeptide Macrocycle. Inorg Chem 2018; 57:5475-5485. [PMID: 29634246 DOI: 10.1021/acs.inorgchem.8b00416] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Fe(II)-coordinating hexapeptides containing three 2,2'-bipyridine moieties as side chains were designed and synthesized. A cyclic hexapeptide having three [(2,2'-bipyridin)-5-yl]-d-alanine (d-Bpa5) residues, in which d-Bpa5 and Gly are alternately arranged with 3-fold rotational symmetry, coordinated with Fe(II) to form a 1:1 octahedral Fe(II)-peptide complex with a single facial-Λ configuration of the metal-centered chirality. NMR spectroscopy and molecular dynamics simulations revealed that the Fe(II)-peptide complex has an apparent C3-symmetric conformations on the NMR time scale, while the peptide backbone is subject to dynamic conformational exchange between three asymmetric β/γ conformations and one C3-symmetric γ/γ/γ conformation. The semirigid cyclic hexapeptide preferentially arranged these conformations of the small octahedral Fe(II)-bipyridine complex, as well as the Ru(II) congener, to underpin the single configuration of the metal-centered chirality.
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Affiliation(s)
- Yuka Kobayashi
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan
| | - Masaru Hoshino
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan
| | - Tomoshi Kameda
- Artificial Intelligence Research Center , National Institute of Advanced Industrial Science and Technology (AIST) , 2-4-7 Aomi , Koutou-ku, Tokyo 135-0064 , Japan
| | - Kazuya Kobayashi
- Kyoto Pharmaceutical University , Yamashina-ku , Kyoto 607-8412 , Japan
| | - Kenichi Akaji
- Kyoto Pharmaceutical University , Yamashina-ku , Kyoto 607-8412 , Japan
| | - Shinsuke Inuki
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan
| | - Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan
| | - Shinya Oishi
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan
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14
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Hewitt SH, Wilson AJ. Generation of Dynamic Combinatorial Libraries Using Hydrazone-Functionalized Surface Mimetics. European J Org Chem 2018; 2018:1872-1879. [PMID: 29780280 PMCID: PMC5947633 DOI: 10.1002/ejoc.201800022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Indexed: 01/01/2023]
Abstract
Dynamic combinatorial chemistry (DCC) represents an approach, whereby traditional supramolecular scaffolds used for protein surface recognition might be exploited to achieve selective high affinity target recognition. Synthesis, in situ screening and amplification under selection pressure allows the generation of ligands, which bear different moieties capable of making multivalent non‐covalent interactions with target proteins. Generic tetracarboxyphenyl porphyrin scaffolds bearing four hydrazide moieties have been used to form dynamic combinatorial libraries (DCLs) using aniline‐catalyzed reversible hydrazone exchange reactions, in 10 % DMSO, 5 mm NH4OAc, at pH 6.75. High resolution mass spectrometry (HRMS) was used to monitor library composition and establish conditions under which equilibria were established.
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Affiliation(s)
- Sarah H Hewitt
- School of Chemistry University of Leeds Woodhouse Lane 9JT Leeds LS2 UK.,Astbury Centre for Structural Molecular Biology University of Leeds Woodhouse Lane 9JT Leeds LS2 UK
| | - Andrew J Wilson
- School of Chemistry University of Leeds Woodhouse Lane 9JT Leeds LS2 UK.,Astbury Centre for Structural Molecular Biology University of Leeds Woodhouse Lane 9JT Leeds LS2 UK
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15
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Hewitt SH, Wilson AJ. Protein sensing and discrimination using highly functionalised ruthenium(ii) tris(bipyridyl) protein surface mimetics in an array format. Chem Commun (Camb) 2018; 53:12278-12281. [PMID: 29090688 DOI: 10.1039/c7cc06175g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Ruthenium(ii) tris(bipyridyl) protein surface mimetics are used in an array format to sense and discriminate proteins including therapeutically relevant targets, hDM2 and MCL-1, using linear discriminant analysis (LDA).
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Affiliation(s)
- Sarah H Hewitt
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.
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16
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van Dun S, Ottmann C, Milroy LG, Brunsveld L. Supramolecular Chemistry Targeting Proteins. J Am Chem Soc 2017; 139:13960-13968. [PMID: 28926241 PMCID: PMC5639466 DOI: 10.1021/jacs.7b01979] [Citation(s) in RCA: 153] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Indexed: 12/19/2022]
Abstract
The specific recognition of protein surface elements is a fundamental challenge in the life sciences. New developments in this field will form the basis of advanced therapeutic approaches and lead to applications such as sensors, affinity tags, immobilization techniques, and protein-based materials. Synthetic supramolecular molecules and materials are creating new opportunities for protein recognition that are orthogonal to classical small molecule and protein-based approaches. As outlined here, their unique molecular features enable the recognition of amino acids, peptides, and even whole protein surfaces, which can be applied to the modulation and assembly of proteins. We believe that structural insights into these processes are of great value for the further development of this field and have therefore focused this Perspective on contributions that provide such structural data.
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Affiliation(s)
- Sam van Dun
- Laboratory of Chemical Biology
and Institute for Complex Molecular Systems, Department of Biomedical
Engineering, Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - Christian Ottmann
- Laboratory of Chemical Biology
and Institute for Complex Molecular Systems, Department of Biomedical
Engineering, Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - Lech-Gustav Milroy
- Laboratory of Chemical Biology
and Institute for Complex Molecular Systems, Department of Biomedical
Engineering, Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - Luc Brunsveld
- Laboratory of Chemical Biology
and Institute for Complex Molecular Systems, Department of Biomedical
Engineering, Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
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17
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de Vink PJ, Briels JM, Schrader T, Milroy L, Brunsveld L, Ottmann C. A Binary Bivalent Supramolecular Assembly Platform Based on Cucurbit[8]uril and Dimeric Adapter Protein 14-3-3. Angew Chem Int Ed Engl 2017; 56:8998-9002. [PMID: 28510303 PMCID: PMC5575475 DOI: 10.1002/anie.201701807] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Indexed: 01/16/2023]
Abstract
Interactions between proteins frequently involve recognition sequences based on multivalent binding events. Dimeric 14-3-3 adapter proteins are a prominent example and typically bind partner proteins in a phosphorylation-dependent mono- or bivalent manner. Herein we describe the development of a cucurbit[8]uril (Q8)-based supramolecular system, which in conjunction with the 14-3-3 protein dimer acts as a binary and bivalent protein assembly platform. We fused the phenylalanine-glycine-glycine (FGG) tripeptide motif to the N-terminus of the 14-3-3-binding epitope of the estrogen receptor α (ERα) for selective binding to Q8. Q8-induced dimerization of the ERα epitope augmented its affinity towards 14-3-3 through a binary bivalent binding mode. The crystal structure of the Q8-induced ternary complex revealed molecular insight into the multiple supramolecular interactions between the protein, the peptide, and Q8.
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Affiliation(s)
- Pim J. de Vink
- Laboratory of Chemical Biology and Institute of Complex Molecular SystemsDepartment of Biomedical EngineeringEindhoven University of TechnologyDen Dolech 25612 AZEindhovenThe Netherlands
| | - Jeroen M. Briels
- Laboratory of Chemical Biology and Institute of Complex Molecular SystemsDepartment of Biomedical EngineeringEindhoven University of TechnologyDen Dolech 25612 AZEindhovenThe Netherlands
- Department of ChemistryUniversity of Duisburg-EssenUniversitätsstrasse 745117EssenGermany
| | - Thomas Schrader
- Department of ChemistryUniversity of Duisburg-EssenUniversitätsstrasse 745117EssenGermany
| | - Lech‐Gustav Milroy
- Laboratory of Chemical Biology and Institute of Complex Molecular SystemsDepartment of Biomedical EngineeringEindhoven University of TechnologyDen Dolech 25612 AZEindhovenThe Netherlands
| | - Luc Brunsveld
- Laboratory of Chemical Biology and Institute of Complex Molecular SystemsDepartment of Biomedical EngineeringEindhoven University of TechnologyDen Dolech 25612 AZEindhovenThe Netherlands
| | - Christian Ottmann
- Laboratory of Chemical Biology and Institute of Complex Molecular SystemsDepartment of Biomedical EngineeringEindhoven University of TechnologyDen Dolech 25612 AZEindhovenThe Netherlands
- Department of ChemistryUniversity of Duisburg-EssenUniversitätsstrasse 745117EssenGermany
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18
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de Vink PJ, Briels JM, Schrader T, Milroy LG, Brunsveld L, Ottmann C. A Binary Bivalent Supramolecular Assembly Platform Based on Cucurbit[8]uril and Dimeric Adapter Protein 14-3-3. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701807] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Pim J. de Vink
- Laboratory of Chemical Biology and Institute of Complex Molecular Systems; Department of Biomedical Engineering; Eindhoven University of Technology; Den Dolech 2 5612 AZ Eindhoven The Netherlands
| | - Jeroen M. Briels
- Laboratory of Chemical Biology and Institute of Complex Molecular Systems; Department of Biomedical Engineering; Eindhoven University of Technology; Den Dolech 2 5612 AZ Eindhoven The Netherlands
- Department of Chemistry; University of Duisburg-Essen; Universitätsstrasse 7 45117 Essen Germany
| | - Thomas Schrader
- Department of Chemistry; University of Duisburg-Essen; Universitätsstrasse 7 45117 Essen Germany
| | - Lech-Gustav Milroy
- Laboratory of Chemical Biology and Institute of Complex Molecular Systems; Department of Biomedical Engineering; Eindhoven University of Technology; Den Dolech 2 5612 AZ Eindhoven The Netherlands
| | - Luc Brunsveld
- Laboratory of Chemical Biology and Institute of Complex Molecular Systems; Department of Biomedical Engineering; Eindhoven University of Technology; Den Dolech 2 5612 AZ Eindhoven The Netherlands
| | - Christian Ottmann
- Laboratory of Chemical Biology and Institute of Complex Molecular Systems; Department of Biomedical Engineering; Eindhoven University of Technology; Den Dolech 2 5612 AZ Eindhoven The Netherlands
- Department of Chemistry; University of Duisburg-Essen; Universitätsstrasse 7 45117 Essen Germany
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19
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Welsch ME, Kaplan A, Chambers JM, Stokes ME, Bos PH, Zask A, Zhang Y, Sanchez-Martin M, Badgley MA, Huang CS, Tran TH, Akkiraju H, Brown LM, Nandakumar R, Cremers S, Yang WS, Tong L, Olive KP, Ferrando A, Stockwell BR. Multivalent Small-Molecule Pan-RAS Inhibitors. Cell 2017; 168:878-889.e29. [PMID: 28235199 DOI: 10.1016/j.cell.2017.02.006] [Citation(s) in RCA: 182] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 10/23/2016] [Accepted: 02/01/2017] [Indexed: 12/30/2022]
Abstract
Design of small molecules that disrupt protein-protein interactions, including the interaction of RAS proteins and their effectors, may provide chemical probes and therapeutic agents. We describe here the synthesis and testing of potential small-molecule pan-RAS ligands, which were designed to interact with adjacent sites on the surface of oncogenic KRAS. One compound, termed 3144, was found to bind to RAS proteins using microscale thermophoresis, nuclear magnetic resonance spectroscopy, and isothermal titration calorimetry and to exhibit lethality in cells partially dependent on expression of RAS proteins. This compound was metabolically stable in liver microsomes and displayed anti-tumor activity in xenograft mouse cancer models. These findings suggest that pan-RAS inhibition may be an effective therapeutic strategy for some cancers and that structure-based design of small molecules targeting multiple adjacent sites to create multivalent inhibitors may be effective for some proteins.
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Affiliation(s)
- Matthew E Welsch
- Department of Chemistry, Columbia University, New York, NY 10027, USA
| | - Anna Kaplan
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA
| | - Jennifer M Chambers
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA
| | - Michael E Stokes
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA
| | - Pieter H Bos
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA
| | - Arie Zask
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA
| | - Yan Zhang
- Department of Chemistry, Columbia University, New York, NY 10027, USA
| | - Marta Sanchez-Martin
- Institute for Cancer Genetics, Columbia University Medical Center, New York, NY 10032, USA
| | - Michael A Badgley
- Department of Pathology, Columbia University Medical Center, New York, NY 10032, USA; Division of Digestive and Liver Diseases in the Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA
| | - Christine S Huang
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA
| | - Timothy H Tran
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA
| | - Hemanth Akkiraju
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA; Quantitative Proteomics and Metabolomics Center, Columbia University, New York, NY 10027, USA
| | - Lewis M Brown
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA; Quantitative Proteomics and Metabolomics Center, Columbia University, New York, NY 10027, USA
| | - Renu Nandakumar
- Irving Institute for Clinical and Translational Research, Columbia University Medical Center, New York, NY 10032, USA
| | - Serge Cremers
- Department of Pathology, Columbia University Medical Center, New York, NY 10032, USA; Irving Institute for Clinical and Translational Research, Columbia University Medical Center, New York, NY 10032, USA
| | - Wan Seok Yang
- Department of Biological Sciences, St. John's University, Queens, NY 11439, USA
| | - Liang Tong
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA
| | - Kenneth P Olive
- Department of Pathology, Columbia University Medical Center, New York, NY 10032, USA; Division of Digestive and Liver Diseases in the Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA
| | - Adolfo Ferrando
- Institute for Cancer Genetics, Columbia University Medical Center, New York, NY 10032, USA; Department of Pathology, Columbia University Medical Center, New York, NY 10032, USA; Department of Pediatrics, Columbia University Medical Center, New York, NY 10032, USA
| | - Brent R Stockwell
- Department of Chemistry, Columbia University, New York, NY 10027, USA; Department of Biological Sciences, Columbia University, New York, NY 10027, USA.
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20
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Bartus É, Hegedüs Z, Wéber E, Csipak B, Szakonyi G, Martinek TA. De Novo Modular Development of a Foldameric Protein-Protein Interaction Inhibitor for Separate Hot Spots: A Dynamic Covalent Assembly Approach. ChemistryOpen 2017; 6:236-241. [PMID: 28413758 PMCID: PMC5390796 DOI: 10.1002/open.201700012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Indexed: 01/27/2023] Open
Abstract
Protein-protein interactions stabilized by multiple separate hot spots are highly challenging targets for synthetic scaffolds. Surface-mimetic foldamers bearing multiple recognition segments are promising candidate inhibitors. In this work, a modular bottom-up approach is implemented by identifying short foldameric recognition segments that interact with the independent hot spots, and connecting them through dynamic covalent library (DCL) optimization. The independent hot spots of a model target (calmodulin) are mapped with hexameric β-peptide helices using a pull-down assay. Recognition segment hits are subjected to a target-templated DCL ligation through thiol-disulfide exchange. The most potent derivative displays low nanomolar affinity towards calmodulin and effectively inhibits the calmodulin-TRPV1 interaction. The DCL assembly of the folded segments offers an efficient approach towards the de novo development of a high-affinity inhibitor of protein-protein interactions.
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Affiliation(s)
- Éva Bartus
- Institute of Pharmaceutical Analysis, SZTE-MTA Lendület Foldamer Research GroupUniversity of Szeged4 Somogyi Str.6720SzegedHungary
| | - Zsófia Hegedüs
- Institute of Pharmaceutical Analysis, SZTE-MTA Lendület Foldamer Research GroupUniversity of Szeged4 Somogyi Str.6720SzegedHungary
| | - Edit Wéber
- Institute of Pharmaceutical Analysis, SZTE-MTA Lendület Foldamer Research GroupUniversity of Szeged4 Somogyi Str.6720SzegedHungary
| | - Brigitta Csipak
- Institute of Pharmaceutical Analysis, SZTE-MTA Lendület Foldamer Research GroupUniversity of Szeged4 Somogyi Str.6720SzegedHungary
| | - Gerda Szakonyi
- Institute of Pharmaceutical Analysis, SZTE-MTA Lendület Foldamer Research GroupUniversity of Szeged4 Somogyi Str.6720SzegedHungary
| | - Tamás A. Martinek
- Institute of Pharmaceutical Analysis, SZTE-MTA Lendület Foldamer Research GroupUniversity of Szeged4 Somogyi Str.6720SzegedHungary
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21
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A rhodium(III)-based inhibitor of autotaxin with antiproliferative activity. Biochim Biophys Acta Gen Subj 2017; 1861:256-263. [DOI: 10.1016/j.bbagen.2016.11.032] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 11/09/2016] [Accepted: 11/21/2016] [Indexed: 12/17/2022]
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22
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Hewitt SH, Filby MH, Hayes E, Kuhn LT, Kalverda AP, Webb ME, Wilson AJ. Protein Surface Mimetics: Understanding How Ruthenium Tris(Bipyridines) Interact with Proteins. Chembiochem 2016; 18:223-231. [PMID: 27860106 PMCID: PMC5347857 DOI: 10.1002/cbic.201600552] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Indexed: 12/21/2022]
Abstract
Protein surface mimetics achieve high-affinity binding by exploiting a scaffold to project binding groups over a large area of solvent-exposed protein surface to make multiple cooperative noncovalent interactions. Such recognition is a prerequisite for competitive/orthosteric inhibition of protein-protein interactions (PPIs). This paper describes biophysical and structural studies on ruthenium(II) tris(bipyridine) surface mimetics that recognize cytochrome (cyt) c and inhibit the cyt c/cyt c peroxidase (CCP) PPI. Binding is electrostatically driven, with enhanced affinity achieved through enthalpic contributions thought to arise from the ability of the surface mimetics to make a greater number of noncovalent interactions than CCP with surface-exposed basic residues on cyt c. High-field natural abundance 1 H,15 N HSQC NMR experiments are consistent with surface mimetics binding to cyt c in similar manner to CCP. This provides a framework for understanding recognition of proteins by supramolecular receptors and informing the design of ligands superior to the protein partners upon which they are inspired.
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Affiliation(s)
- Sarah H Hewitt
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.,Astbury Centre For Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Maria H Filby
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.,Astbury Centre For Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Ed Hayes
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.,Astbury Centre For Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Lars T Kuhn
- Astbury Centre For Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Arnout P Kalverda
- Astbury Centre For Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Michael E Webb
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.,Astbury Centre For Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Andrew J Wilson
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.,Astbury Centre For Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
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23
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Liu LJ, Wang W, Zhong Z, Lin S, Lu L, Wang YT, Ma DL, Leung CH. Inhibition of TLR1/2 dimerization by enantiomers of metal complexes. Chem Commun (Camb) 2016; 52:12278-12281. [DOI: 10.1039/c6cc06155a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Complex 1 and its enantiomer Λ-1 are reported for the first time to inhibit NF-κB transduction via the modulation of Pam3CSK4-induced TLR1/2 heterodimerization.
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Affiliation(s)
- Li-Juan Liu
- State Key Laboratory of Quality Research in Chinese Medicine
- Institute of Chinese Medical Sciences
- University of Macau
- Macao
- China
| | - Wanhe Wang
- Department of Chemistry
- Hong Kong Baptist University
- Kowloon Tong
- China
| | - Zhangfeng Zhong
- State Key Laboratory of Quality Research in Chinese Medicine
- Institute of Chinese Medical Sciences
- University of Macau
- Macao
- China
| | - Sheng Lin
- Department of Chemistry
- Hong Kong Baptist University
- Kowloon Tong
- China
| | - Lihua Lu
- State Key Laboratory of Quality Research in Chinese Medicine
- Institute of Chinese Medical Sciences
- University of Macau
- Macao
- China
| | - Yi-Tao Wang
- State Key Laboratory of Quality Research in Chinese Medicine
- Institute of Chinese Medical Sciences
- University of Macau
- Macao
- China
| | - Dik-Lung Ma
- Department of Chemistry
- Hong Kong Baptist University
- Kowloon Tong
- China
| | - Chung-Hang Leung
- State Key Laboratory of Quality Research in Chinese Medicine
- Institute of Chinese Medical Sciences
- University of Macau
- Macao
- China
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