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Pfütze S, Charria-Girón E, Schulzke E, Toshe R, Khonsanit A, Franke R, Surup F, Brönstrup M, Stadler M. Depicting the Chemical Diversity of Bioactive Meroterpenoids Produced by the Largest Organism on Earth. Angew Chem Int Ed Engl 2024; 63:e202318505. [PMID: 38390787 DOI: 10.1002/anie.202318505] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 02/14/2024] [Accepted: 02/15/2024] [Indexed: 02/24/2024]
Abstract
In this investigation, we explored the diversity of melleolide-type meroterpenoids produced by Armillaria ostoyae, one of the largest and oldest organisms on Earth, using extracts from liquid and solid fermentation media. The study unveiled three unprecedented dimeric bismelleolides and three novel fatty-acid-substituted congeners, along with 11 new and 21 known derivatives. The structures were elucidated by 1D and 2D NMR spectroscopy and HRESI-MS, and ROESY spectral analysis for relative configurations. Absolute configurations were determined from crystal structures and through ECD spectra comparison. A compound library of melleolide-type meroterpenoids facilitated metabolomics-wide associations, revealing production patterns under different culture conditions. The library enabled assessments of antimicrobial and cytotoxic activities, revealing that the Δ2,4 double bond is not crucial for antifungal activity. Cytotoxicity was linked to the presence of an aldehyde at C1, but lost with hydroxylation at C13. Chemoinformatic analyses demonstrated the intricate interplay of chemical modifications on biological properties. This study marks the first systematic exploration of Armillaria spp. meroterpenoid diversity by MS-based untargeted metabolomics, offering insight into structure-activity relationships through innovative chemoinformatics.
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Affiliation(s)
- Sebastian Pfütze
- Department Microbial Drugs, Helmholtz Centre for Infection Research (HZI), and German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Inhoffenstrasse 7, 38124, Braunschweig, Germany
- Institute of Microbiology, Technische Universität Braunschweig, Spielmannstraße 7, 38106, Braunschweig, Germany
| | - Esteban Charria-Girón
- Department Microbial Drugs, Helmholtz Centre for Infection Research (HZI), and German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Inhoffenstrasse 7, 38124, Braunschweig, Germany
- Institute of Microbiology, Technische Universität Braunschweig, Spielmannstraße 7, 38106, Braunschweig, Germany
| | - Esther Schulzke
- Department Microbial Drugs, Helmholtz Centre for Infection Research (HZI), and German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Inhoffenstrasse 7, 38124, Braunschweig, Germany
- Institute of Microbiology, Technische Universität Braunschweig, Spielmannstraße 7, 38106, Braunschweig, Germany
| | - Rita Toshe
- Department Microbial Drugs, Helmholtz Centre for Infection Research (HZI), and German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Inhoffenstrasse 7, 38124, Braunschweig, Germany
- Institute of Pharmaceutical Biology Pharm. Biotechnology, Universität des Saarlandes Campus C2 3, 66123, Saarbrücken, Germany
| | - Artit Khonsanit
- BIOTEC, National Science and Technology Development, Agency (NSTDA), 111 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, 12120, Pathum Thani, Thailand
| | - Raimo Franke
- Department Chemical Biology, Helmholtz Centre for Infection Research (HZI), and German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Inhoffenstrasse 7, 38124, Braunschweig, Germany
| | - Frank Surup
- Department Microbial Drugs, Helmholtz Centre for Infection Research (HZI), and German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Inhoffenstrasse 7, 38124, Braunschweig, Germany
- Institute of Microbiology, Technische Universität Braunschweig, Spielmannstraße 7, 38106, Braunschweig, Germany
| | - Mark Brönstrup
- Department Chemical Biology, Helmholtz Centre for Infection Research (HZI), and German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Inhoffenstrasse 7, 38124, Braunschweig, Germany
| | - Marc Stadler
- Department Microbial Drugs, Helmholtz Centre for Infection Research (HZI), and German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Inhoffenstrasse 7, 38124, Braunschweig, Germany
- Institute of Microbiology, Technische Universität Braunschweig, Spielmannstraße 7, 38106, Braunschweig, Germany
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Zuffa S, Schmid R, Bauermeister A, P Gomes PW, Caraballo-Rodriguez AM, El Abiead Y, Aron AT, Gentry EC, Zemlin J, Meehan MJ, Avalon NE, Cichewicz RH, Buzun E, Terrazas MC, Hsu CY, Oles R, Ayala AV, Zhao J, Chu H, Kuijpers MCM, Jackrel SL, Tugizimana F, Nephali LP, Dubery IA, Madala NE, Moreira EA, Costa-Lotufo LV, Lopes NP, Rezende-Teixeira P, Jimenez PC, Rimal B, Patterson AD, Traxler MF, Pessotti RDC, Alvarado-Villalobos D, Tamayo-Castillo G, Chaverri P, Escudero-Leyva E, Quiros-Guerrero LM, Bory AJ, Joubert J, Rutz A, Wolfender JL, Allard PM, Sichert A, Pontrelli S, Pullman BS, Bandeira N, Gerwick WH, Gindro K, Massana-Codina J, Wagner BC, Forchhammer K, Petras D, Aiosa N, Garg N, Liebeke M, Bourceau P, Kang KB, Gadhavi H, de Carvalho LPS, Silva Dos Santos M, Pérez-Lorente AI, Molina-Santiago C, Romero D, Franke R, Brönstrup M, Vera Ponce de León A, Pope PB, La Rosa SL, La Barbera G, Roager HM, Laursen MF, Hammerle F, Siewert B, Peintner U, Licona-Cassani C, Rodriguez-Orduña L, Rampler E, Hildebrand F, Koellensperger G, Schoeny H, Hohenwallner K, Panzenboeck L, Gregor R, O'Neill EC, Roxborough ET, Odoi J, Bale NJ, Ding S, Sinninghe Damsté JS, Guan XL, Cui JJ, Ju KS, Silva DB, Silva FMR, da Silva GF, Koolen HHF, Grundmann C, Clement JA, Mohimani H, Broders K, McPhail KL, Ober-Singleton SE, Rath CM, McDonald D, Knight R, Wang M, Dorrestein PC. microbeMASST: a taxonomically informed mass spectrometry search tool for microbial metabolomics data. Nat Microbiol 2024; 9:336-345. [PMID: 38316926 PMCID: PMC10847041 DOI: 10.1038/s41564-023-01575-9] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 11/29/2023] [Indexed: 02/07/2024]
Abstract
microbeMASST, a taxonomically informed mass spectrometry (MS) search tool, tackles limited microbial metabolite annotation in untargeted metabolomics experiments. Leveraging a curated database of >60,000 microbial monocultures, users can search known and unknown MS/MS spectra and link them to their respective microbial producers via MS/MS fragmentation patterns. Identification of microbe-derived metabolites and relative producers without a priori knowledge will vastly enhance the understanding of microorganisms' role in ecology and human health.
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Affiliation(s)
- Simone Zuffa
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA
| | - Robin Schmid
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA
| | - Anelize Bauermeister
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Paulo Wender P Gomes
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA
| | - Andres M Caraballo-Rodriguez
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA
| | - Yasin El Abiead
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA
| | - Allegra T Aron
- Department of Chemistry and Biochemistry, University of Denver, Denver, CO, USA
| | - Emily C Gentry
- Department of Chemistry, Virginia Tech, Blacksburg, VA, USA
| | - Jasmine Zemlin
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA
- Center for Microbiome Innovation, University of California San Diego, San Diego, CA, USA
| | - Michael J Meehan
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA
| | - Nicole E Avalon
- Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Robert H Cichewicz
- Department of Chemistry and Biochemistry, College of Arts and Sciences, University of Oklahoma, Norman, OK, USA
| | - Ekaterina Buzun
- Department of Pathology, School of Medicine, University of California San Diego, San Diego, CA, USA
| | - Marvic Carrillo Terrazas
- Department of Pathology, School of Medicine, University of California San Diego, San Diego, CA, USA
| | - Chia-Yun Hsu
- Department of Pathology, School of Medicine, University of California San Diego, San Diego, CA, USA
| | - Renee Oles
- Department of Pathology, School of Medicine, University of California San Diego, San Diego, CA, USA
| | - Adriana Vasquez Ayala
- Department of Pathology, School of Medicine, University of California San Diego, San Diego, CA, USA
| | - Jiaqi Zhao
- Department of Pathology, School of Medicine, University of California San Diego, San Diego, CA, USA
| | - Hiutung Chu
- Department of Pathology, School of Medicine, University of California San Diego, San Diego, CA, USA
- Center for Mucosal Immunology, Allergy, and Vaccines (cMAV), Chiba University-University of California San Diego, San Diego, CA, USA
| | - Mirte C M Kuijpers
- Department of Ecology, Behavior and Evolution, School of Biological Sciences, University of California San Diego, San Diego, CA, USA
| | - Sara L Jackrel
- Department of Ecology, Behavior and Evolution, School of Biological Sciences, University of California San Diego, San Diego, CA, USA
| | - Fidele Tugizimana
- Department of Biochemistry, Faculty of Science, University of Johannesburg, Johannesburg, South Africa
- International Research and Development, Omnia Nutriology, Omnia Group (Pty) Ltd, Johannesburg, South Africa
| | - Lerato Pertunia Nephali
- Department of Biochemistry, Faculty of Science, University of Johannesburg, Johannesburg, South Africa
| | - Ian A Dubery
- Department of Biochemistry, Faculty of Science, University of Johannesburg, Johannesburg, South Africa
| | - Ntakadzeni Edwin Madala
- Department of Biochemistry and Microbiology, Faculty of Sciences, Agriculture and Engineering, University of Venda, Thohoyandou, South Africa
| | - Eduarda Antunes Moreira
- Department of BioMolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Leticia Veras Costa-Lotufo
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Norberto Peporine Lopes
- Department of BioMolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Paula Rezende-Teixeira
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Paula C Jimenez
- Department of Marine Science, Institute of Marine Science, Federal University of São Paulo, Santos, Brazil
| | - Bipin Rimal
- Department of Veterinary and Biomedical Sciences, Pennsylvania State University, University Park, PA, USA
| | - Andrew D Patterson
- Department of Veterinary and Biomedical Sciences, Pennsylvania State University, University Park, PA, USA
| | - Matthew F Traxler
- Plant and Microbial Biology, College of Natural Resources, University of California Berkeley, Berkeley, CA, USA
| | - Rita de Cassia Pessotti
- Plant and Microbial Biology, College of Natural Resources, University of California Berkeley, Berkeley, CA, USA
| | - Daniel Alvarado-Villalobos
- Metabolomics and Chemical Profiling, Centro de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, San José, Costa Rica
| | - Giselle Tamayo-Castillo
- Metabolomics and Chemical Profiling, Centro de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, San José, Costa Rica
- Escuela de Química, Universidad de Costa Rica, San José, Costa Rica
| | - Priscila Chaverri
- Microbial Biotechnology, Centro de Investigaciones en Productos Naturales (CIPRONA) and Escuela de Biología, Universidad de Costa Rica, San José, Costa Rica
- Escuela de Biología, Universidad de Costa Rica, San José, Costa Rica
- Department of Natural Sciences, Bowie State University, Bowie, MD, USA
| | - Efrain Escudero-Leyva
- Microbial Biotechnology, Centro de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, San José, Costa Rica
| | - Luis-Manuel Quiros-Guerrero
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Alexandre Jean Bory
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Juliette Joubert
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Adriano Rutz
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Pierre-Marie Allard
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Andreas Sichert
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - Sammy Pontrelli
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - Benjamin S Pullman
- Department of Computer Science and Engineering, University of California San Diego, San Diego, CA, USA
| | - Nuno Bandeira
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA
- Department of Computer Science and Engineering, University of California San Diego, San Diego, CA, USA
| | - William H Gerwick
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA
- Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Katia Gindro
- Plant Protection, Mycology group, Agroscope, Nyon, Switzerland
| | | | - Berenike C Wagner
- Department of Microbiology and Organismic Interactions, Interfaculty Institute of Microbiology and Infection Medicine, University of Tuebingen, Tuebingen, Germany
| | - Karl Forchhammer
- Department of Microbiology and Organismic Interactions, Interfaculty Institute of Microbiology and Infection Medicine, University of Tuebingen, Tuebingen, Germany
| | - Daniel Petras
- Cluster of Excellence 'Controlling Microbes to Fight Infections' (CMFI), University of Tuebingen, Tuebingen, Germany
| | - Nicole Aiosa
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, USA
| | - Neha Garg
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, USA
- Center for Microbial Dynamics and Infection, Georgia Institute of Technology, Atlanta, GA, USA
| | - Manuel Liebeke
- Department of Symbiosis, Metabolic Interactions, Max Planck Institute for Marine Microbiology, Bremen, Germany
- Department for Metabolomics, Kiel University, Kiel, Germany
| | - Patric Bourceau
- Department of Symbiosis, Metabolic Interactions, Max Planck Institute for Marine Microbiology, Bremen, Germany
| | - Kyo Bin Kang
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Sookmyung Women's University, Seoul, Korea
| | - Henna Gadhavi
- Mycobacterial Metabolism and Antibiotic Research Laboratory, The Francis Crick Institute, London, UK
- King's College London, London, UK
| | - Luiz Pedro Sorio de Carvalho
- Mycobacterial Metabolism and Antibiotic Research Laboratory, The Francis Crick Institute, London, UK
- Chemistry Department, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation and Technology, Jupiter, FL, USA
| | | | - Alicia Isabel Pérez-Lorente
- Department of Microbiology, Instituto de Hortofruticultura Subtropical y Mediterránea 'La Mayora', Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM-UMA-CSIC), Bulevar Louis Pasteur (Campus Universitario de Teatinos), Malaga, Spain
| | - Carlos Molina-Santiago
- Department of Microbiology, Instituto de Hortofruticultura Subtropical y Mediterránea 'La Mayora', Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM-UMA-CSIC), Bulevar Louis Pasteur (Campus Universitario de Teatinos), Malaga, Spain
| | - Diego Romero
- Department of Microbiology, Instituto de Hortofruticultura Subtropical y Mediterránea 'La Mayora', Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM-UMA-CSIC), Bulevar Louis Pasteur (Campus Universitario de Teatinos), Malaga, Spain
| | - Raimo Franke
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Mark Brönstrup
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany
- German Center for Infection Research (DZIF), Site Hannover-Braunschweig, Braunschweig, Germany
| | - Arturo Vera Ponce de León
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway
| | - Phillip Byron Pope
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway
- Faculty of Biosciences, Norwegian University of Life Sciences, Ås, Norway
| | - Sabina Leanti La Rosa
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway
- Faculty of Biosciences, Norwegian University of Life Sciences, Ås, Norway
| | - Giorgia La Barbera
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Frederiksberg, Denmark
| | - Henrik M Roager
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Frederiksberg, Denmark
| | | | - Fabian Hammerle
- Department of Pharmacognosy, Institute of Pharmacy, University of Innsbruck, Innsbruck, Austria
| | - Bianka Siewert
- Department of Pharmacognosy, Institute of Pharmacy, University of Innsbruck, Innsbruck, Austria
| | - Ursula Peintner
- Department of Microbiology, University of Innsbruck, Innsbruck, Austria
| | - Cuauhtemoc Licona-Cassani
- Escuela de Ingeniería y Ciencias, Centro de Biotecnología FEMSA, Tecnologico de Monterrey, Monterrey, Mexico
| | - Lorena Rodriguez-Orduña
- Escuela de Ingeniería y Ciencias, Centro de Biotecnología FEMSA, Tecnologico de Monterrey, Monterrey, Mexico
| | - Evelyn Rampler
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Felina Hildebrand
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
- Vienna Doctoral School in Chemistry (DoSChem), Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Gunda Koellensperger
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
- Vienna Metabolomics Center (VIME), University of Vienna, Vienna, Austria
| | - Harald Schoeny
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Katharina Hohenwallner
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
- Vienna Doctoral School in Chemistry (DoSChem), Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Lisa Panzenboeck
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
- Vienna Doctoral School in Chemistry (DoSChem), Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Rachel Gregor
- Department of Civil and Environmental Engineering, School of Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | | | | | - Jane Odoi
- Faculty of Engineering, University of Nottingham, Nottingham, UK
| | - Nicole J Bale
- Department of Marine Microbiology and Biogeochemistry, Netherlands Institute for Sea Research (NIOZ), t Horntje (Texel), the Netherlands
| | - Su Ding
- Department of Marine Microbiology and Biogeochemistry, Netherlands Institute for Sea Research (NIOZ), t Horntje (Texel), the Netherlands
| | - Jaap S Sinninghe Damsté
- Department of Marine Microbiology and Biogeochemistry, Netherlands Institute for Sea Research (NIOZ), t Horntje (Texel), the Netherlands
| | - Xue Li Guan
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Jerry J Cui
- Department of Microbiology, College of Arts and Sciences, The Ohio State University, Columbus, OH, USA
| | - Kou-San Ju
- Department of Microbiology, College of Arts and Sciences, The Ohio State University, Columbus, OH, USA
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH, USA
- Center for Applied Plant Sciences, The Ohio State University, Columbus, OH, USA
- Infectious Diseases Institute, The Ohio State University, Columbus, OH, USA
| | - Denise Brentan Silva
- Faculty of Pharmaceutical Sciences, Food and Nutrition, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - Fernanda Motta Ribeiro Silva
- Faculty of Pharmaceutical Sciences, Food and Nutrition, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | | | - Hector H F Koolen
- Escola Superior de Ciências da Saúde, Universidade do Estado do Amazonas, Manaus, Brazil
| | - Carlismari Grundmann
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | | | - Hosein Mohimani
- Computational Biology Department, School of Computer Science, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Kirk Broders
- USDA, Agricultural Research Service, National Center for Agricultural Utilization Research, Mycotoxin Prevention and Applied Microbiology Research Unit, Peoria, IL, USA
| | - Kerry L McPhail
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR, USA
| | - Sidnee E Ober-Singleton
- Department of Physics, Study of Heavy-Element-Biomaterials, University of Oregon, Eugene, OR, USA
| | | | - Daniel McDonald
- Department of Pediatrics, University of California San Diego, San Diego, CA, USA
| | - Rob Knight
- Department of Computer Science and Engineering, University of California San Diego, San Diego, CA, USA
- Department of Pediatrics, University of California San Diego, San Diego, CA, USA
- Department of Bioengineering, University of California San Diego, San Diego, CA, USA
| | - Mingxun Wang
- Department of Computer Science and Engineering, University of California Riverside, Riverside, CA, USA
| | - Pieter C Dorrestein
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA.
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA, USA.
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Charria-Girón E, Marin-Felix Y, Beutling U, Franke R, Brönstrup M, Vasco-Palacios AM, Caicedo NH, Surup F. Metabolomics insights into the polyketide-lactones produced by Diaporthe caliensis sp. nov., an endophyte of the medicinal plant Otoba gracilipes. Microbiol Spectr 2023; 11:e0274323. [PMID: 37921483 PMCID: PMC10715209 DOI: 10.1128/spectrum.02743-23] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 10/01/2023] [Indexed: 11/04/2023] Open
Abstract
IMPORTANCE The integration of metabolomics-based approaches into the discovery pipeline has enabled improved mining and prioritization of prolific secondary metabolite producers such as endophytic fungi. However, relying on automated untargeted analysis tools might lead to misestimation of the chemical complexity harbored in these organisms. Our study emphasizes the importance of isolation and structure elucidation of the respective metabolites in addition to deep metabolome analysis for the correct interpretation of untargeted metabolomics approaches such as molecular networking. Additionally, it encourages the further exploration of endophytic fungi from traditional medicinal plants for the discovery of natural products.
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Affiliation(s)
- Esteban Charria-Girón
- Department Microbial Drugs, Helmholtz Centre for Infection Research (HZI), German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Braunschweig, Germany
- Institute of Microbiology, Technische Universität Braunschweig, Braunschweig, Germany
- Departamento de Ciencias biológicas, Facultad de Ingeniería, Diseño y Ciencias Aplicadas, Bioprocesos y Biotecnología, Universidad Icesi, Cali, Colombia
| | - Yasmina Marin-Felix
- Department Microbial Drugs, Helmholtz Centre for Infection Research (HZI), German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Braunschweig, Germany
- Institute of Microbiology, Technische Universität Braunschweig, Braunschweig, Germany
| | - Ulrike Beutling
- Department Chemical Biology, Helmholtz Centre for Infection Research GmbH (HZI), Braunschweig, Germany
| | - Raimo Franke
- Department Chemical Biology, Helmholtz Centre for Infection Research GmbH (HZI), Braunschweig, Germany
| | - Mark Brönstrup
- Department Chemical Biology, Helmholtz Centre for Infection Research GmbH (HZI), Braunschweig, Germany
| | - Aida M. Vasco-Palacios
- Grupo de Microbiología Ambiental y Grupo BioMicro, Escuela de Microbiología, Universidad de Antioquia UdeA, Medellín, Colombia
- Asociación Colombiana de Micología, ASCOLMIC, Bogotá, Colombia
| | - Nelson H. Caicedo
- Departamento de Ciencias biológicas, Facultad de Ingeniería, Diseño y Ciencias Aplicadas, Bioprocesos y Biotecnología, Universidad Icesi, Cali, Colombia
- Centro BioInc, Universidad Icesi, Cali, Colombia
| | - Frank Surup
- Department Microbial Drugs, Helmholtz Centre for Infection Research (HZI), German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Braunschweig, Germany
- Institute of Microbiology, Technische Universität Braunschweig, Braunschweig, Germany
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Zuffa S, Schmid R, Bauermeister A, Gomes PWP, Caraballo-Rodriguez AM, Abiead YE, Aron AT, Gentry EC, Zemlin J, Meehan MJ, Avalon NE, Cichewicz RH, Buzun E, Terrazas MC, Hsu CY, Oles R, Ayala AV, Zhao J, Chu H, Kuijpers MCM, Jackrel SL, Tugizimana F, Nephali LP, Dubery IA, Madala NE, Moreira EA, Costa-Lotufo LV, Lopes NP, Rezende-Teixeira P, Jimenez PC, Rimal B, Patterson AD, Traxler MF, de Cassia Pessotti R, Alvarado-Villalobos D, Tamayo-Castillo G, Chaverri P, Escudero-Leyva E, Quiros-Guerrero LM, Bory AJ, Joubert J, Rutz A, Wolfender JL, Allard PM, Sichert A, Pontrelli S, Pullman BS, Bandeira N, Gerwick WH, Gindro K, Massana-Codina J, Wagner BC, Forchhammer K, Petras D, Aiosa N, Garg N, Liebeke M, Bourceau P, Kang KB, Gadhavi H, de Carvalho LPS, dos Santos MS, Pérez-Lorente AI, Molina-Santiago C, Romero D, Franke R, Brönstrup M, de León AVP, Pope PB, Rosa SLL, Barbera GL, Roager HM, Laursen MF, Hammerle F, Siewert B, Peintner U, Licona-Cassani C, Rodriguez-Orduña L, Rampler E, Hildebrand F, Koellensperger G, Schoeny H, Hohenwallner K, Panzenboeck L, Gregor R, O’Neill EC, Roxborough ET, Odoi J, Bale NJ, Ding S, Sinninghe Damsté JS, Guan XL, Cui JJ, Ju KS, Silva DB, Silva FMR, da Silva GF, Koolen HHF, Grundmann C, Clement JA, Mohimani H, Broders K, McPhail KL, Ober-Singleton SE, Rath CM, McDonald D, Knight R, Wang M, Dorrestein PC. A Taxonomically-informed Mass Spectrometry Search Tool for Microbial Metabolomics Data. Res Sq 2023:rs.3.rs-3189768. [PMID: 37577622 PMCID: PMC10418563 DOI: 10.21203/rs.3.rs-3189768/v1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
MicrobeMASST, a taxonomically-informed mass spectrometry (MS) search tool, tackles limited microbial metabolite annotation in untargeted metabolomics experiments. Leveraging a curated database of >60,000 microbial monocultures, users can search known and unknown MS/MS spectra and link them to their respective microbial producers via MS/MS fragmentation patterns. Identification of microbial-derived metabolites and relative producers, without a priori knowledge, will vastly enhance the understanding of microorganisms' role in ecology and human health.
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Affiliation(s)
- Simone Zuffa
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Robin Schmid
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Anelize Bauermeister
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, Av. Lineu Prestes 1524, São Paulo, SP, 05508-000, Brazil
| | - Paulo Wender P. Gomes
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Andres M. Caraballo-Rodriguez
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Yasin El Abiead
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Allegra T. Aron
- Department of Chemistry and Biochemistry, University of Denver, Denver, CO, 80210, United States
| | - Emily C. Gentry
- Department of Chemistry, Virginia Tech, Blacksburg, VA, 24061, United States
| | - Jasmine Zemlin
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
- Center for Microbiome Innovation, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Michael J. Meehan
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Nicole E. Avalon
- Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Dr., La Jolla, CA, 92093, United States
| | - Robert H. Cichewicz
- Department of Chemistry and Biochemistry, College of Arts and Sciences, University of Oklahoma, 101 Stephenson Parkway, Norman, OK, 73019, United States
| | - Ekaterina Buzun
- Department of Pathology, School of Medicine, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Marvic Carrillo Terrazas
- Department of Pathology, School of Medicine, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Chia-Yun Hsu
- Department of Pathology, School of Medicine, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Renee Oles
- Department of Pathology, School of Medicine, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Adriana Vasquez Ayala
- Department of Pathology, School of Medicine, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Jiaqi Zhao
- Department of Pathology, School of Medicine, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Hiutung Chu
- Department of Pathology, School of Medicine, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
- Center for Mucosal Immunology, Allergy, and Vaccines (cMAV), Chiba University-University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Mirte C. M. Kuijpers
- Department of Ecology, Behavior and Evolution, School of Biological Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Sara L. Jackrel
- Department of Ecology, Behavior and Evolution, School of Biological Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Fidele Tugizimana
- Department of Biochemistry, Faculty of Science, University of Johannesburg, Auckland Park, Johannesburg, Gauteng, 2006, South Africa
- International Research and Development, Omnia Nutriology, Omnia Group (Pty) Ltd, 178 Montecasino Boulevard, Fourways, Johannesburg, Gauteng, 2191, South Africa
| | - Lerato Pertunia Nephali
- Department of Biochemistry, Faculty of Science, University of Johannesburg, Auckland Park, Johannesburg, Gauteng, 2006, South Africa
| | - Ian A. Dubery
- Department of Biochemistry, Faculty of Science, University of Johannesburg, Auckland Park, Johannesburg, Gauteng, 2006, South Africa
| | - Ntakadzeni Edwin Madala
- Department of Biochemistry and Microbiology, Faculty of Sciences, Agriculture and Engineering, University of Venda, Private Bag X5050, Thohoyandou, Limpopo, 950, South Africa
| | - Eduarda Antunes Moreira
- Department of BioMolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida do Café, Ribeirão Preto, SP, 14040-903, Brazil
| | - Leticia Veras Costa-Lotufo
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, Av. Lineu Prestes 1524, São Paulo, SP, 05508-000, Brazil
| | - Norberto Peporine Lopes
- Department of BioMolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida do Café, Ribeirão Preto, SP, 14040-903, Brazil
| | - Paula Rezende-Teixeira
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, Av. Lineu Prestes 1524, São Paulo, SP, 05508-000, Brazil
| | - Paula C. Jimenez
- Department of Marine Science, Institute of Marine Science, Federal University of São Paulo, Rua Carvalho de Mendonça, 144, Santos, SP, 11070-100, Brazil
| | - Bipin Rimal
- Department of Veterinary and Biomedical Sciences, Pennsylvania State University, 319 Life Sciences Building, University Park, PA, 16802, United States
| | - Andrew D. Patterson
- Department of Veterinary and Biomedical Sciences, Pennsylvania State University, 320 Life Sciences Building, University Park, PA, 16802, United States
| | - Matthew F. Traxler
- Plant and Microbial Biology, College of Natural Resources, University of California Berkeley, 311 Koshland Hall, Berkeley, CA, 94270, United States
| | - Rita de Cassia Pessotti
- Plant and Microbial Biology, College of Natural Resources, University of California Berkeley, 311 Koshland Hall, Berkeley, CA, 94270, United States
| | - Daniel Alvarado-Villalobos
- Metabolomics & Chemical Profiling, Centro de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, San Pedro de Montes de Oca, San José, 2061, Costa Rica
| | - Giselle Tamayo-Castillo
- Metabolomics & Chemical Profiling, Centro de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, San Pedro de Montes de Oca, San José, 2061, Costa Rica
- Escuela de Química, Universidad de Costa Rica, San Pedro de Montes de Oca, San José, 2061, Costa Rica
| | - Priscila Chaverri
- Microbial Biotechnology, Centro de Investigaciones en Productos Naturales (CIPRONA) & Escuela de Biología, Universidad de Costa Rica, San Pedro de Montes de Oca, San José, 2061, Costa Rica
- Escuela de Biología, Universidad de Costa Rica, San Pedro de Montes de Oca, San José, 2061, Costa Rica
- Department of Natural Sciences, Bowie State University, Bowie, Maryland, 20715, United States
| | - Efrain Escudero-Leyva
- Microbial Biotechnology, Centro de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, San Pedro de Montes de Oca, San José, 2061, Costa Rica
| | - Luis-Manuel Quiros-Guerrero
- School of Pharmaceutical Sciences, University of Geneva, Rue Michel-Servet 1, Genève, GE, 1206, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Rue Michel-Servet 1, Genève, GE, 1206, Switzerland
| | - Alexandre Jean Bory
- School of Pharmaceutical Sciences, University of Geneva, Rue Michel-Servet 1, Genève, GE, 1206, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Rue Michel-Servet 1, Genève, GE, 1206, Switzerland
| | - Juliette Joubert
- School of Pharmaceutical Sciences, University of Geneva, Rue Michel-Servet 1, Genève, GE, 1206, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Rue Michel-Servet 1, Genève, GE, 1206, Switzerland
| | - Adriano Rutz
- School of Pharmaceutical Sciences, University of Geneva, Rue Michel-Servet 1, Genève, GE, 1206, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Rue Michel-Servet 1, Genève, GE, 1206, Switzerland
- Institute of Molecular Systems Biology, ETH Zurich, Otto-Stern-Weg 3, Zürich, 8093, Switzerland
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, University of Geneva, Rue Michel-Servet 1, Genève, GE, 1206, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Rue Michel-Servet 1, Genève, GE, 1206, Switzerland
| | - Pierre-Marie Allard
- School of Pharmaceutical Sciences, University of Geneva, Rue Michel-Servet 1, Genève, GE, 1206, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Rue Michel-Servet 1, Genève, GE, 1206, Switzerland
- Department of Biology, University of Fribourg, Chemin du Musée, 10, Fribourg, FR, 1700, Switzerland
| | - Andreas Sichert
- Institute of Molecular Systems Biology, ETH Zurich, Otto-Stern-Weg 3, Zürich, 8093, Switzerland
| | - Sammy Pontrelli
- Institute of Molecular Systems Biology, ETH Zurich, Otto-Stern-Weg 3, Zürich, 8093, Switzerland
| | - Benjamin S Pullman
- Department of Computer Science and Engineering, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Nuno Bandeira
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
- Department of Computer Science and Engineering, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - William H. Gerwick
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
- Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Katia Gindro
- Plant Protection, Mycology group, Agroscope, Rte de Duillier, 50, Nyon, VD, 1260, Switzerland
| | - Josep Massana-Codina
- Plant Protection, Mycology group, Agroscope, Rte de Duillier, 50, Nyon, VD, 1260, Switzerland
| | - Berenike C. Wagner
- Department of Microbiology and Organismic Interactions, Interfaculty Institute of Microbiology and Infection Medicine, University of Tuebingen, Auf der Morgenstelle 28, Tuebingen, 72076, Germany
| | - Karl Forchhammer
- Department of Microbiology and Organismic Interactions, Interfaculty Institute of Microbiology and Infection Medicine, University of Tuebingen, Auf der Morgenstelle 28, Tuebingen, 72076, Germany
| | - Daniel Petras
- Cluster of Excellence “Controlling Microbes to Fight Infections” (CMFI), University of Tuebingen, Auf der Morgenstelle 24, Tuebingen, 72076, Germany
| | - Nicole Aiosa
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 950 Atlantic Drive, Atlanta, GA, 30332, United States
| | - Neha Garg
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 950 Atlantic Drive, Atlanta, GA, 30332, United States
- Center for Microbial Dynamics and Infection, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA, 30332, United States
| | - Manuel Liebeke
- Department of Symbiosis, Metabolic Interactions, Max Planck Institute for Marine Microbiology, Celsiusstrasse 1, Bremen, 28359, Germany
| | - Patric Bourceau
- Department of Symbiosis, Metabolic Interactions, Max Planck Institute for Marine Microbiology, Celsiusstrasse 1, Bremen, 28359, Germany
| | - Kyo Bin Kang
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Sookmyung Women’s University, Cheongpa-ro 47 gil 100, Seoul, 04310, Korea
| | - Henna Gadhavi
- Mycobacterial Metabolism and Antibiotic Research Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
- King’s College London, Strand, London, WC2R 2LS, UK
| | - Luiz Pedro Sorio de Carvalho
- Mycobacterial Metabolism and Antibiotic Research Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
- Chemistry Department, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, 110 Scripps Way, Jupiter, FL, 33458, United States
| | - Mariana Silva dos Santos
- Metabolomics Science Technology Platform, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Alicia Isabel Pérez-Lorente
- Department of Microbiology, Instituto de Hortofruticultura Subtropical y Mediterránea ‘‘La Mayora’’, Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM-UMA-CSIC), Bulevar Louis Pasteur (Campus Universitario de Teatinos), Málaga, Málaga, 29071, Spain
| | - Carlos Molina-Santiago
- Department of Microbiology, Instituto de Hortofruticultura Subtropical y Mediterránea ‘‘La Mayora’’, Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM-UMA-CSIC), Bulevar Louis Pasteur (Campus Universitario de Teatinos), Málaga, Málaga, 29071, Spain
| | - Diego Romero
- Department of Microbiology, Instituto de Hortofruticultura Subtropical y Mediterránea ‘‘La Mayora’’, Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM-UMA-CSIC), Bulevar Louis Pasteur (Campus Universitario de Teatinos), Málaga, Málaga, 29071, Spain
| | - Raimo Franke
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Inhoffenstraße 7, Braunschweig, 38124, Germany
| | - Mark Brönstrup
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Inhoffenstraße 7, Braunschweig, 38124, Germany
- German Center for Infection Research (DZIF), Site Hannover-Braunschweig, Braunschweig, 38124, Germany
| | - Arturo Vera Ponce de León
- Faculty of Chemistry, BIotechnology and Food Science, Norwegian University of Life Sciences, Postboks 5003, Ås, 1433, Norway
| | - Phillip Byron Pope
- Faculty of Chemistry, BIotechnology and Food Science, Norwegian University of Life Sciences, Postboks 5003, Ås, 1433, Norway
- Faculty of Biosciences, Norwegian University of Life Sciences, Postboks 5003, Ås, 1433, Norway
| | - Sabina Leanti La Rosa
- Faculty of Chemistry, BIotechnology and Food Science, Norwegian University of Life Sciences, Postboks 5003, Ås, 1433, Norway
| | - Giorgia La Barbera
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Rolighedsvej 26, Frederiksberg, 1958, Denmark
| | - Henrik M. Roager
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Rolighedsvej 26, Frederiksberg, 1958, Denmark
| | - Martin Frederik Laursen
- National Food Institute, Technical University of Denmark, Kemitorvet B202, Lyngby, 2800, Denmark
| | - Fabian Hammerle
- Department of Pharmacognosy, Institute of Pharmacy, University of Innsbruck, Innrain 80-82, Innsbruck, 6020, Austria
| | - Bianka Siewert
- Department of Pharmacognosy, Institute of Pharmacy, University of Innsbruck, Innrain 80-82, Innsbruck, 6020, Austria
| | - Ursula Peintner
- Department of Microbiology, University of Innsbruck, Technikerstr. 25, Innsbruck, 6020, Austria
| | - Cuauhtemoc Licona-Cassani
- Escuela de Ingeniería y Ciencias, Centro de Biotecnología FEMSA, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Monterrey, Nuevo Leon, 64849, Mexico
| | - Lorena Rodriguez-Orduña
- Escuela de Ingeniería y Ciencias, Centro de Biotecnología FEMSA, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Monterrey, Nuevo Leon, 64849, Mexico
| | - Evelyn Rampler
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 38, Vienna, 1090, Austria
| | - Felina Hildebrand
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 38, Vienna, 1090, Austria
- Vienna Doctoral School in Chemistry (DoSChem), Faculty of Chemistry, University of Vienna, Waehringer Str. 42, Vienna, 1090, Austria
| | - Gunda Koellensperger
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 38, Vienna, 1090, Austria
- Vienna Metabolomics Center (VIME), University of Vienna, Althanstr. 14,, Vienna, 1090, Austria
| | - Harald Schoeny
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 38, Vienna, 1090, Austria
| | - Katharina Hohenwallner
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 38, Vienna, 1090, Austria
- Vienna Doctoral School in Chemistry (DoSChem), Faculty of Chemistry, University of Vienna, Waehringer Str. 42, Vienna, 1090, Austria
| | - Lisa Panzenboeck
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Str. 38, Vienna, 1090, Austria
- Vienna Doctoral School in Chemistry (DoSChem), Faculty of Chemistry, University of Vienna, Waehringer Str. 42, Vienna, 1090, Austria
| | - Rachel Gregor
- Department of Civil and Environmental Engineering, School of Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA, 02142, United States
| | - Ellis Charles O’Neill
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG72RD, UK
| | | | - Jane Odoi
- Faculty of Engineering, University of Nottingham, University Park, Nottingham, NG72RD, UK
| | - Nicole J. Bale
- Department of Marine Microbiology and Biogeochemistry, Netherlands Institute for Sea Research (NIOZ), Landsdiep 4, t Horntje (Texel), 1797 SZ, Netherlands
| | - Su Ding
- Department of Marine Microbiology and Biogeochemistry, Netherlands Institute for Sea Research (NIOZ), Landsdiep 4, t Horntje (Texel), 1797 SZ, Netherlands
| | - Jaap S. Sinninghe Damsté
- Department of Marine Microbiology and Biogeochemistry, Netherlands Institute for Sea Research (NIOZ), Landsdiep 4, t Horntje (Texel), 1797 SZ, Netherlands
| | - Xueli Li Guan
- Lee Kong Chian School of Medicine, Nanyang Technological University, 59 Nanyang Drive, Singapore, Singapore, 636921, Singapore
| | - Jerry J. Cui
- Department of Microbiology, College of Arts and Sciences, The Ohio State University, 484 W. 12th Ave, Columbus, OH, 43210, United States
| | - Kou-San Ju
- Department of Microbiology, College of Arts and Sciences, The Ohio State University, 484 W. 12th Ave, Columbus, OH, 43210, United States
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, 484 W. 12th Ave, Columbus, OH, 43210, United States
- Center for Applied Plant Sciences, The Ohio State University, 484 W. 12th Ave, Columbus, OH, 43210, United States
- Infectious Diseases Institute, The Ohio State University, 484 W. 12th Ave, Columbus, OH, 43210, United States
| | - Denise Brentan Silva
- Faculty of Pharmaceutical Sciences, Food and Nutrition, Federal University of Mato Grosso do Sul, Av. Costa e Silva, s/n, Campo Grande, MS, 79070-900, Brazil
| | - Fernanda Motta Ribeiro Silva
- Faculty of Pharmaceutical Sciences, Food and Nutrition, Federal University of Mato Grosso do Sul, Av. Costa e Silva, s/n, Campo Grande, MS, 79070-900, Brazil
| | | | - Hector H. F. Koolen
- Escola Superior de Ciências da Saúde, Universidade do Estado do Amazonas, 1777 Carvalho Leal Avenue, Manaus, AM, 69065-001, Brazil
| | - Carlismari Grundmann
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida do Café, Ribeirão Preto, SP, 14040-903, Brazil
| | - Jason A. Clement
- Baruch S. Blumberg Institute, 3805 Old Easton Rd., Doylestown, PA, 18902, United States
| | - Hosein Mohimani
- Computational Biology Department, School of Computer Science, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA, 15213, United States
| | - Kirk Broders
- USDA, Agricultural Research Service, National Center for Agricultural Utilization Research, Mycotoxin Prevention and Applied Microbiology Research Unit, 1815 N. University, Peoria, IL, 61604, United States
| | - Kerry L. McPhail
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Weniger Hall, room 341, Corvallis, OR, 97331, United States
| | - Sidnee E. Ober-Singleton
- Department of Physics, Study of Heavy-Element-Biomaterials, University of Oregon, 1255 E 13th Ave, Basement, Eugene, OR, 97402, United States
| | | | - Daniel McDonald
- Department of Pediatrics, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Rob Knight
- Department of Computer Science and Engineering, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
- Department of Pediatrics, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
- Department of Bioengineering, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
| | - Mingxun Wang
- Department of Computer Science and Engineering, University of California Riverside, 900 University Ave., Riverside, CA, 92521, United States
| | - Pieter C. Dorrestein
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Dr., San Diego, CA, 92093, United States
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Lai YH, Franke R, Pinkert L, Overwin H, Brönstrup M. Molecular Signatures of the Eagle Effect Induced by the Artificial Siderophore Conjugate LP-600 in E. coli. ACS Infect Dis 2023; 9:567-581. [PMID: 36763039 PMCID: PMC10012262 DOI: 10.1021/acsinfecdis.2c00567] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Achieving cellular uptake is a central challenge for novel antibiotics targeting Gram-negative bacterial pathogens. One strategy is to hijack the bacterial iron transport system by siderophore-antibiotic conjugates that are actively imported into the cell. This was realized with the MECAM-ampicillin conjugate LP-600 we recently reported that was highly active against E. coli. In the present study, we investigate a paradoxical regrowth of E. coli upon treatment of LP-600 at concentrations 16-32 times above the minimum inhibitory concentration (MIC). The phenomenon, coined "Eagle-effect" in other systems, was not due to resistance formation, and it occurred for the siderophore conjugate but not for free ampicillin. To investigate the molecular imprint of the Eagle effect, a combined transcriptome and untargeted metabolome analysis was conducted. LP-600 induced the expression of genes involved in iron acquisition, SOS response, and the e14 prophage upon regrowth conditions. The Eagle effect was diminished in the presence of sulbactam, which we ascribe to a putative synergistic antibiotic action but not to β-lactamase inhibition. The study highlights the relevance of the Eagle effect for siderophore conjugates. Through the first systematic -omics investigations, it also demonstrates that the Eagle effect manifests not only in a paradoxical growth but also in unique gene expression and metabolite profiles.
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Affiliation(s)
- Yi-Hui Lai
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Raimo Franke
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Lukas Pinkert
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Heike Overwin
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Mark Brönstrup
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany.,German Center for Infection Research (DZIF), Site Hannover-Braunschweig, 38124 Braunschweig, Germany.,Center of Biomolecular Drug Research (BMWZ), Leibniz University, 30159 Hannover, Germany
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Cedeño-Sanchez M, Charria-Girón E, Lambert C, Luangsa-ard JJ, Decock C, Franke R, Brönstrup M, Stadler M. Segregation of the genus Parahypoxylon (Hypoxylaceae, Xylariales) from Hypoxylon by a polyphasic taxonomic approach. MycoKeys 2023; 95:131-162. [DOI: 10.3897/mycokeys.95.98125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 01/31/2023] [Indexed: 02/22/2023] Open
Abstract
During a mycological survey of the Democratic Republic of the Congo, a fungal specimen that morphologically resembled the American species Hypoxylon papillatum was encountered. A polyphasic approach including morphological and chemotaxonomic together with a multigene phylogenetic study (ITS, LSU, tub2, and rpb2) of Hypoxylon spp. and representatives of related genera revealed that this strain represents a new species of the Hypoxylaceae. However, the multi-locus phylogenetic inference indicated that the new fungus clustered with H. papillatum in a separate clade from the other species of Hypoxylon. Studies by ultrahigh performance liquid chromatography coupled to diode array detection and ion mobility tandem mass spectrometry (UHPLC-DAD-IM-MS/MS) were carried out on the stromatal extracts. In particular, the MS/MS spectra of the major stromatal metabolites of these species indicated the production of hitherto unreported azaphilone pigments with a similar core scaffold to the cohaerin-type metabolites, which are exclusively found in the Hypoxylaceae. Based on these results, the new genus Parahypoxylon is introduced herein. Aside from P. papillatum, the genus also includes P. ruwenzoriensesp. nov., which clustered together with the type species within a basal clade of the Hypoxylaceae together with its sister genus Durotheca.
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Suo H, Hochnadel I, Petriv N, Franke R, Schmidt J, Limanska N, Tugai A, Jedicke N, Broenstrup M, Manns MP, Yevsa T. Elucidating the mechanism behind and investigating the efficacy of Traditional Chinese Medicine and Traditional Tibetan Medicine in combination with standard therapeutics in hepatocellular carcinoma and cholangiocarcinoma in vitro. Front Pharmacol 2022; 13:906468. [PMID: 36172191 PMCID: PMC9511410 DOI: 10.3389/fphar.2022.906468] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 08/08/2022] [Indexed: 11/28/2022] Open
Abstract
In this study, we investigated compounds of plant and mushroom origin belonging to Traditional Chinese Medicine (TCM) and to Traditional Tibetan Medicine (TTM): a sandy beige mushroom Trametes robiniophila Murr, commonly known as Huaier/TCM as well as Ershiwuwei Songshi Wan and Qiwei Honghua Shusheng Wan, which both belong to TTM. We aimed to study the efficacy of TTM and TCM in hepatocellular carcinoma (HCC) and cholangiocarcinoma (CCA) in vitro. TCM and TTM were tested either as a monotherapy, or in combination with standard therapeutics: sorafenib for HCC treatment and gemcitabine for CCA. We also discovered a protective mechanism behind the most successful therapeutic combinations. The results demonstrated that TCM and TTM inhibited the proliferation of cancer cells in a time- and dose-dependent manner. The results were compared to classical chemotherapeutics currently used in the clinic: sorafenib for HCC and gemcitabine for CCA. In HCC settings, a combination of Huaier (16 mg/ml) with half of the human plasma concentration of sorafenib, Qiwei Honghua Shusheng Wan (1 mg/ml) monotherapy as well as its combination with half or even a quarter dose of the human plasma concentration of sorafenib represented the most efficient treatments, inhibiting the growth of HCC cells more effectively than the standard therapy. The inhibitory mechanism relied on a strong induction of apoptosis. In CCA settings, Ershiwuwei Songshi Wan and Qiwei Honghua Shusheng Wan as monotherapies or in combination with very low doses of gemcitabine inhibited the growth of CCA cells more efficiently than the standard therapy. Importantly, Ershiwuwei Songshi Wan at the 8 and 16 mg/ml concentrations and Qiwei Honghua Shusheng Wan at the 4 mg/ml concentration were efficacious with gemcitabine applied at massively reduced concentrations. The protective mechanism in CCA relied on a strong induction of early and late apoptosis. Cellular senescence and necroptosis were not associated with protection against HCC/CCA. Combination therapy with TCM or TTM allowed for a dose reduction of standard chemotherapeutics. This is especially important as both chemotherapeutic drugs show strong side effects in patients. The reduction of chemotherapeutics and the synergistic effect observed while applying them in combination with TCM and TTM has strong perspectives for the clinic and patients suffering from HCC and CCA.
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Affiliation(s)
- Huizhen Suo
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Inga Hochnadel
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Nataliia Petriv
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Raimo Franke
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Jennifer Schmidt
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Nataliia Limanska
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
- Department of Microbiology, Virology and Biotechnology, Odesa I. I. Mechnykov National University, Odesa, Ukraine
| | - Alisa Tugai
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Nils Jedicke
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Mark Broenstrup
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany
- German Center for Infection Research, Braunschweig, Germany
| | - Michael P. Manns
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Tetyana Yevsa
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
- *Correspondence: Tetyana Yevsa,
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8
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Hiebeler M, Franke R, Ingenerf M, Krause S, Mohassel P, Pak K, Mammen A, Schoser B, Bönnemann CG, Walter MC. Slowly Progressive Limb-Girdle Weakness and HyperCKemia - Limb Girdle Muscular Dystrophy or Anti-3-Hydroxy-3-Methylglutaryl-CoA-Reductase-Myopathy? J Neuromuscul Dis 2022; 9:607-614. [PMID: 35754285 DOI: 10.3233/jnd-220810] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Anti-3-hydroxy-3-methylglutaryl-CoA reductase (HMGCR)-myopathy is a usually rapidly progressive form of immune-mediated necrotizing myopathy (IMNM). Rarer clinical courses show slow progression and resemble the phenotype of limb-girdle dystrophy (LGMD). OBJECTIVE We demonstrate the difficulties in differentiating LGMD versus anti-HMGCR-myopathy. METHODS We report on a 48-year-old patient with slowly progressive tetraparesis and hyperCKemia for more than 20 years. RESULTS Due to myopathic changes in initial and second muscle biopsy and typical clinical presentation, the patient was diagnosed with LGMD 20 years ago; despite comprehensive genetic testing including exome diagnostics, the genetic cause of disease could not be identified. Finally, HMG-CoA reductase antibodies were detected, confirming the diagnosis of anti-HMGCR-myopathy. By re-work-up of a second muscle biopsy specimen from year 2009, the diagnosis of a IMNM was made in retrospect. Seven cycles of high-dose immunoglobulins were administered; patient reported outcome measures have mildly improved. CONCLUSION Patients with clinical LGMD phenotype, degenerative changes in muscle biopsy but without genetic confirmation of the disease should be tested for HMG-CoA-myopathy, thereby allowing for an early start of treatment.
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Affiliation(s)
- Miriam Hiebeler
- Friedrich-Baur-Institute, Department of Neurology, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Raimo Franke
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Maria Ingenerf
- Department of Radiology, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Sabine Krause
- Friedrich-Baur-Institute, Department of Neurology, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Payam Mohassel
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Katherine Pak
- Muscle Disease Unit, Laboratory of Muscle Stem Cells and Gene Regulation, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Andrew Mammen
- Muscle Disease Unit, Laboratory of Muscle Stem Cells and Gene Regulation, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Benedikt Schoser
- Friedrich-Baur-Institute, Department of Neurology, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Carsten G Bönnemann
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Maggie C Walter
- Friedrich-Baur-Institute, Department of Neurology, Ludwig-Maximilians-University of Munich, Munich, Germany
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9
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Vuong TH, Rockstroh N, Bentrup U, Rabeah J, Knossalla J, Peitz S, Franke R, Brückner A. Role of Surface Acidity in Formation and Performance of Active Ni Single Sites in Supported Catalysts for Butene Dimerization: A View inside by Operando EPR and In Situ FTIR Spectroscopy. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04894] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- T. Huyen Vuong
- Leibniz Institute for Catalysis at the University of Rostock, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - N. Rockstroh
- Leibniz Institute for Catalysis at the University of Rostock, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - U. Bentrup
- Leibniz Institute for Catalysis at the University of Rostock, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - J. Rabeah
- Leibniz Institute for Catalysis at the University of Rostock, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - J. Knossalla
- Performance Materials, Evonik Operations GmbH, Paul-Baumann-Straße 1, 45772 Marl, Germany
| | - S. Peitz
- Performance Materials, Evonik Operations GmbH, Paul-Baumann-Straße 1, 45772 Marl, Germany
| | - R. Franke
- Performance Materials, Evonik Operations GmbH, Paul-Baumann-Straße 1, 45772 Marl, Germany
- Lehrstuhl für Theoretische Chemie, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - A. Brückner
- Leibniz Institute for Catalysis at the University of Rostock, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
- Department Life, Light & Matter, University of Rostock, Albert-Einstein-Str. 25, 18059 Rostock, Germany
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10
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Bräuer A, Franke R, von Hammerstein-Equord A. Conductive heating mattress leads to ECG changes that mimic pacemaker spikes. J Clin Monit Comput 2020; 35:671-672. [PMID: 32671670 PMCID: PMC8084762 DOI: 10.1007/s10877-020-00520-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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 05/04/2020] [Indexed: 11/05/2022]
Abstract
Hypothermia is a common perioperative complication. To prevent perioperative hypothermia amongst other things electrical heating mattresses are used. We have made an observation with the use of an electrical heating mattress that may confuse users. In this case the ECG monitoring suddenly showed spikes that looked like spikes from an implanted pacemaker. When turning off the heating mattress the spikes disappeared and returned after turning on the heating mattress again.
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Affiliation(s)
- A Bräuer
- Department of Anesthesiology, University Medical Center, Georg-August University, Robert-Koch-Str. 40, 37075, Göttingen, Germany.
| | - R Franke
- Department of Thoracic and Cardiovascular Surgery, University Medical Center, Georg-August University, Robert-Koch-Str. 40, 37075, Göttingen, Germany
| | - A von Hammerstein-Equord
- Department of Thoracic and Cardiovascular Surgery, University Medical Center, Georg-August University, Robert-Koch-Str. 40, 37075, Göttingen, Germany
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11
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Depke T, Franke R, Brönstrup M. CluMSID: an R package for similarity-based clustering of tandem mass spectra to aid feature annotation in metabolomics. Bioinformatics 2020; 35:3196-3198. [PMID: 30649189 DOI: 10.1093/bioinformatics/btz005] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 11/12/2018] [Accepted: 01/07/2019] [Indexed: 11/14/2022] Open
Abstract
SUMMARY Compound identification is one of the most eminent challenges in the untargeted analysis of complex mixtures of small molecules by mass spectrometry. Similarity of tandem mass spectra can provide valuable information on putative structural similarities between known and unknown analytes and hence aids feature identification in the bioanalytical sciences. We have developed CluMSID (Clustering of MS2 spectra for metabolite identification), an R package that enables researchers to make use of tandem mass spectra and neutral loss pattern similarities as a part of their metabolite annotation workflow. CluMSID offers functions for all analysis steps from import of raw data to data mining by unsupervised multivariate methods along with respective (interactive) visualizations. A detailed tutorial with example data is provided as supplementary information. AVAILABILITY AND IMPLEMENTATION CluMSID is available as R package from https://github.com/tdepke/CluMSID/and from https://bioconductor.org/packages/CluMSID/. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Tobias Depke
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig D-38124, Germany
| | - Raimo Franke
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig D-38124, Germany
| | - Mark Brönstrup
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig D-38124, Germany.,German Centre for Infection Research (DZIF), partner site Hannover-Braunschweig, D-38124 Braunschweig, Germany
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12
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Schenke N, Franke R, Puschmann S, Turgut N, Kastrup A, Thiel CM, Hildebrandt H. Can auditory cues improve visuo-spatial neglect? Results of two pilot studies. Neuropsychol Rehabil 2020; 31:710-730. [PMID: 32102605 DOI: 10.1080/09602011.2020.1727931] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Although neglect is known to be a multimodal deficit, current interventions often address the visual modality only. Experimental studies, however, found that neglect patients can partially overcome their spatial inattention temporarily when being exposed to auditory cues that move towards the neglected side of space. Two pilot studies investigated the impact of dynamic auditory cueing on egocentric neglect severity in a clinical-therapeutic setting. In both studies, the patient groups received 15 sessions of intervention. Study 1, designed as double-blinded trial with a historical control group, targeted severely impaired early-acute patients who listened to music or audio books which were presented as moving dynamically from right to left. Results showed a reduction in egocentric neglect severity that persisted after therapy termination in the intervention but not in the historical control group. In study 2, based on the comparison with reported effect sizes of previous studies, dynamic meaningful auditory cues and optokinetic stimulation were combined in a computer-based training. Both studies found a significant reduction of neglect severity. Results provide evidence for the reduction of egocentric neglect severity after repetitive auditory cueing therapy in both severely and moderately impaired patients. Our promising findings should be verified thoroughly in randomized-controlled trials.
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Affiliation(s)
- N Schenke
- Department of Psychology, School of Medicine and Health Sciences, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany.,Department of Neurology, Klinikum Bremen-Ost, Bremen, Germany
| | - R Franke
- Department of Psychology, School of Medicine and Health Sciences, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany
| | - S Puschmann
- Department of Psychology, University of Lübeck, Lübeck, Germany
| | - N Turgut
- Institute of Neurosciences, University San Francisco de Quito, Quito, Ecuador
| | - A Kastrup
- Department of Neurology, Klinikum Bremen-Ost, Bremen, Germany
| | - C M Thiel
- Department of Psychology, School of Medicine and Health Sciences, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany.,Cluster of Excellence "Hearing4all", Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany
| | - H Hildebrandt
- Department of Psychology, School of Medicine and Health Sciences, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany.,Department of Neurology, Klinikum Bremen-Ost, Bremen, Germany
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13
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Arshad H, Alfonso JCL, Franke R, Michaelis K, Araujo L, Habib A, Zboromyrska Y, Lücke E, Strungaru E, Akmatov MK, Hatzikirou H, Meyer-Hermann M, Petersmann A, Nauck M, Brönstrup M, Bilitewski U, Abel L, Sievers J, Vila J, Illig T, Schreiber J, Pessler F. Decreased plasma phospholipid concentrations and increased acid sphingomyelinase activity are accurate biomarkers for community-acquired pneumonia. J Transl Med 2019; 17:365. [PMID: 31711507 PMCID: PMC6849224 DOI: 10.1186/s12967-019-2112-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [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: 08/05/2019] [Accepted: 10/26/2019] [Indexed: 02/07/2023] Open
Abstract
Background There continues to be a great need for better biomarkers and host-directed treatment targets for community-acquired pneumonia (CAP). Alterations in phospholipid metabolism may constitute a source of small molecule biomarkers for acute infections including CAP. Evidence from animal models of pulmonary infections and sepsis suggests that inhibiting acid sphingomyelinase (which releases ceramides from sphingomyelins) may reduce end-organ damage. Methods We measured concentrations of 105 phospholipids, 40 acylcarnitines, and 4 ceramides, as well as acid sphingomyelinase activity, in plasma from patients with CAP (n = 29, sampled on admission and 4 subsequent time points), chronic obstructive pulmonary disease exacerbation with infection (COPD, n = 13) as a clinically important disease control, and 33 age- and sex-matched controls. Results Phospholipid concentrations were greatly decreased in CAP and normalized along clinical improvement. Greatest changes were seen in phosphatidylcholines, followed by lysophosphatidylcholines, sphingomyelins and ceramides (three of which were upregulated), and were least in acylcarnitines. Changes in COPD were less pronounced, but also differed qualitatively, e.g. by increases in selected sphingomyelins. We identified highly accurate biomarkers for CAP (AUC ≤ 0.97) and COPD (AUC ≤ 0.93) vs. Controls, and moderately accurate biomarkers for CAP vs. COPD (AUC ≤ 0.83), all of which were phospholipids. Phosphatidylcholines, lysophosphatidylcholines, and sphingomyelins were also markedly decreased in S. aureus-infected human A549 and differentiated THP1 cells. Correlations with C-reactive protein and procalcitonin were predominantly negative but only of mild-to-moderate extent, suggesting that these markers reflect more than merely inflammation. Consistent with the increased ceramide concentrations, increased acid sphingomyelinase activity accurately distinguished CAP (fold change = 2.8, AUC = 0.94) and COPD (1.75, 0.88) from Controls and normalized with clinical resolution. Conclusions The results underscore the high potential of plasma phospholipids as biomarkers for CAP, begin to reveal differences in lipid dysregulation between CAP and infection-associated COPD exacerbation, and suggest that the decreases in plasma concentrations are at least partially determined by changes in host target cells. Furthermore, they provide validation in clinical blood samples of acid sphingomyelinase as a potential treatment target to improve clinical outcome of CAP.
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Affiliation(s)
- Haroon Arshad
- Research Group "Biomarkers for Infectious Diseases", TWINCORE Centre for Experimental and Clinical Infection Research, Feodor-Lynen-Str. 7, 30625, Hannover, Germany
| | - Juan Carlos López Alfonso
- Department of Systems Immunology and Braunschweig Integrated Centre of Systems Biology, Helmholtz Centre for Infection Research, Brunswick, Germany
| | - Raimo Franke
- Department of Chemical Biology, Helmholtz Centre for Infection Research and German Center for Infection Research (DZIF), Brunswick, Germany
| | - Katina Michaelis
- Clinic for Pneumology, Otto-von-Guericke University, Magdeburg, Germany
| | - Leonardo Araujo
- Research Group "Biomarkers for Infectious Diseases", TWINCORE Centre for Experimental and Clinical Infection Research, Feodor-Lynen-Str. 7, 30625, Hannover, Germany.,Helmholtz Centre for Infection Research, Brunswick, Germany
| | - Aamna Habib
- Research Group "Biomarkers for Infectious Diseases", TWINCORE Centre for Experimental and Clinical Infection Research, Feodor-Lynen-Str. 7, 30625, Hannover, Germany.,Department of Chemical Biology, Helmholtz Centre for Infection Research and German Center for Infection Research (DZIF), Brunswick, Germany
| | - Yuliya Zboromyrska
- Department of Clinical Microbiology, Biomedical Diagnostic Centre (CDB), Hospital Clinic, School of Medicine, University of Barcelona, Institute of Global Health (ISGlobal), Barcelona, Spain
| | - Eva Lücke
- Clinic for Pneumology, Otto-von-Guericke University, Magdeburg, Germany
| | - Emilia Strungaru
- Clinic for Pneumology, Otto-von-Guericke University, Magdeburg, Germany
| | - Manas K Akmatov
- Research Group "Biomarkers for Infectious Diseases", TWINCORE Centre for Experimental and Clinical Infection Research, Feodor-Lynen-Str. 7, 30625, Hannover, Germany.,Helmholtz Centre for Infection Research, Brunswick, Germany
| | - Haralampos Hatzikirou
- Department of Systems Immunology and Braunschweig Integrated Centre of Systems Biology, Helmholtz Centre for Infection Research, Brunswick, Germany
| | - Michael Meyer-Hermann
- Department of Systems Immunology and Braunschweig Integrated Centre of Systems Biology, Helmholtz Centre for Infection Research, Brunswick, Germany
| | - Astrid Petersmann
- Institute for Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany.,UMG-Laboratory, University Medicine Göttingen, Göttingen, Germany
| | - Matthias Nauck
- Institute for Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany.,DZHK (German Centre for Cardiovascular Research), Partner Site Greifswald, University Medicine, Greifswald, Germany
| | - Mark Brönstrup
- Department of Chemical Biology, Helmholtz Centre for Infection Research and German Center for Infection Research (DZIF), Brunswick, Germany
| | - Ursula Bilitewski
- Department of Chemical Biology, Helmholtz Centre for Infection Research and German Center for Infection Research (DZIF), Brunswick, Germany
| | - Laurent Abel
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM, Paris, France.,Paris Descartes University, Imagine Institute, Paris, France.,Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, USA
| | - Jorg Sievers
- Clinical Microbiology, GlaxoSmithKline, Collegeville, PA, USA.,Clinical Development, ViiV Healthcare, Brentford, UK
| | - Jordi Vila
- Department of Clinical Microbiology, Biomedical Diagnostic Centre (CDB), Hospital Clinic, School of Medicine, University of Barcelona, Institute of Global Health (ISGlobal), Barcelona, Spain
| | - Thomas Illig
- Hannover Unified Biobank, Hannover Medical School, Hannover, Germany
| | - Jens Schreiber
- Clinic for Pneumology, Otto-von-Guericke University, Magdeburg, Germany
| | - Frank Pessler
- Research Group "Biomarkers for Infectious Diseases", TWINCORE Centre for Experimental and Clinical Infection Research, Feodor-Lynen-Str. 7, 30625, Hannover, Germany. .,Helmholtz Centre for Infection Research, Brunswick, Germany. .,Centre for Individualised Infection Medicine, Hannover, Germany.
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14
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Filho HM, Konzen V, Medeiros M, Augustin M, Crestani D, Martins R, Franke R. Landau Kleffner syndrome: A case report. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.951] [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: 11/26/2022]
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15
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Franke R, Hinkelmann B, Fetz V, Stradal T, Sasse F, Klawonn F, Brönstrup M. xCELLanalyzer: A Framework for the Analysis of Cellular Impedance Measurements for Mode of Action Discovery. SLAS Discov 2019; 24:213-223. [PMID: 30681906 DOI: 10.1177/2472555218819459] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Mode of action (MoA) identification of bioactive compounds is very often a challenging and time-consuming task. We used a label-free kinetic profiling method based on an impedance readout to monitor the time-dependent cellular response profiles for the interaction of bioactive natural products and other small molecules with mammalian cells. Such approaches have been rarely used so far due to the lack of data mining tools to properly capture the characteristics of the impedance curves. We developed a data analysis pipeline for the xCELLigence Real-Time Cell Analysis detection platform to process the data, assess and score their reproducibility, and provide rank-based MoA predictions for a reference set of 60 bioactive compounds. The method can reveal additional, previously unknown targets, as exemplified by the identification of tubulin-destabilizing activities of the RNA synthesis inhibitor actinomycin D and the effects on DNA replication of vioprolide A. The data analysis pipeline is based on the statistical programming language R and is available to the scientific community through a GitHub repository.
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Affiliation(s)
- Raimo Franke
- 1 Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Bettina Hinkelmann
- 1 Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Verena Fetz
- 1 Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Theresia Stradal
- 2 Department of Cell Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Florenz Sasse
- 1 Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Frank Klawonn
- 3 Biostatistics Group, Helmholtz Centre for Infection Research, Braunschweig, Germany.,4 Department of Computer Science, Ostfalia University, Wolfenbuettel, Germany
| | - Mark Brönstrup
- 1 Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany.,5 Center of Biomolecular Drug Research (BMWZ), Institute of Organic Chemistry, Leibniz Universität, Hannover, Germany
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16
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Raud B, Roy DG, Divakaruni AS, Tarasenko TN, Franke R, Ma EH, Samborska B, Hsieh WY, Wong AH, Stüve P, Arnold-Schrauf C, Guderian M, Lochner M, Rampertaap S, Romito K, Monsale J, Brönstrup M, Bensinger SJ, Murphy AN, McGuire PJ, Jones RG, Sparwasser T, Berod L. Etomoxir Actions on Regulatory and Memory T Cells Are Independent of Cpt1a-Mediated Fatty Acid Oxidation. Cell Metab 2018; 28:504-515.e7. [PMID: 30043753 PMCID: PMC6747686 DOI: 10.1016/j.cmet.2018.06.002] [Citation(s) in RCA: 243] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 04/12/2018] [Accepted: 06/02/2018] [Indexed: 10/28/2022]
Abstract
T cell subsets including effector (Teff), regulatory (Treg), and memory (Tmem) cells are characterized by distinct metabolic profiles that influence their differentiation and function. Previous research suggests that engagement of long-chain fatty acid oxidation (LC-FAO) supports Foxp3+ Treg cell and Tmem cell survival. However, evidence for this is mostly based on inhibition of Cpt1a, the rate-limiting enzyme for LC-FAO, with the drug etomoxir. Using genetic models to target Cpt1a specifically in T cells, we dissected the role of LC-FAO in primary, memory, and regulatory T cell responses. Here we show that the ACC2/Cpt1a axis is largely dispensable for Teff, Tmem, or Treg cell formation, and that the effects of etomoxir on T cell differentiation and function are independent of Cpt1a expression. Together our data argue that metabolic pathways other than LC-FAO fuel Tmem or Treg differentiation and suggest alternative mechanisms for the effects of etomoxir that involve mitochondrial respiration.
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Affiliation(s)
- Brenda Raud
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research, A Joint Venture between the Medical School Hannover (MHH) and the Helmholtz Centre for Infection Research (HZI), Hannover, Niedersachsen 30625, Germany
| | - Dominic G Roy
- Goodman Cancer Research Centre, Department of Physiology, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
| | - Ajit S Divakaruni
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Tatyana N Tarasenko
- Metabolism, Infection, and Immunity Section, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Raimo Franke
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Eric H Ma
- Goodman Cancer Research Centre, Department of Physiology, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
| | - Bozena Samborska
- Goodman Cancer Research Centre, Department of Physiology, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
| | - Wei Yuan Hsieh
- Department of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Alison H Wong
- Goodman Cancer Research Centre, Department of Physiology, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
| | - Philipp Stüve
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research, A Joint Venture between the Medical School Hannover (MHH) and the Helmholtz Centre for Infection Research (HZI), Hannover, Niedersachsen 30625, Germany
| | - Catharina Arnold-Schrauf
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research, A Joint Venture between the Medical School Hannover (MHH) and the Helmholtz Centre for Infection Research (HZI), Hannover, Niedersachsen 30625, Germany
| | - Melanie Guderian
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research, A Joint Venture between the Medical School Hannover (MHH) and the Helmholtz Centre for Infection Research (HZI), Hannover, Niedersachsen 30625, Germany
| | - Matthias Lochner
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research, A Joint Venture between the Medical School Hannover (MHH) and the Helmholtz Centre for Infection Research (HZI), Hannover, Niedersachsen 30625, Germany
| | - Shakuntala Rampertaap
- Department of Laboratory Medicine, National Institutes of Health, Bethesda, MD 20892, USA
| | - Kimberly Romito
- Department of Laboratory Medicine, National Institutes of Health, Bethesda, MD 20892, USA
| | - Joseph Monsale
- Department of Laboratory Medicine, National Institutes of Health, Bethesda, MD 20892, USA
| | - Mark Brönstrup
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Steven J Bensinger
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Anne N Murphy
- Department of Pharmacology, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Peter J McGuire
- Metabolism, Infection, and Immunity Section, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Russell G Jones
- Goodman Cancer Research Centre, Department of Physiology, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada.
| | - Tim Sparwasser
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research, A Joint Venture between the Medical School Hannover (MHH) and the Helmholtz Centre for Infection Research (HZI), Hannover, Niedersachsen 30625, Germany.
| | - Luciana Berod
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research, A Joint Venture between the Medical School Hannover (MHH) and the Helmholtz Centre for Infection Research (HZI), Hannover, Niedersachsen 30625, Germany.
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Zobel N, Franke R, Adler S. Mixed Reality in der Instandhaltung. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201855352] [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: 11/09/2022]
Affiliation(s)
- N. Zobel
- Fraunhofer-Institut für Fabrikbetrieb und -automatisierung IFF; Sandtorstraße 22 39106 Magdeburg Deutschland
| | - R. Franke
- Fraunhofer-Institut für Fabrikbetrieb und -automatisierung IFF; Sandtorstraße 22 39106 Magdeburg Deutschland
| | - S. Adler
- Fraunhofer-Institut für Fabrikbetrieb und -automatisierung IFF; Sandtorstraße 22 39106 Magdeburg Deutschland
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18
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Depke T, Franke R, Brönstrup M. Clustering of MS2 spectra using unsupervised methods to aid the identification of secondary metabolites from Pseudomonas aeruginosa. J Chromatogr B Analyt Technol Biomed Life Sci 2017. [DOI: 10.1016/j.jchromb.2017.06.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [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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19
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Wolf U, Mendoza S, Kiselev J, Unverzagt S, Behrens J, Franke R. Ist die Beweglichkeit der HWS bei Patienten mit chronischem Nackenschmerz eingeschränkt? physioscience 2017. [DOI: 10.1055/s-0035-1567213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Zusammenfassung
Hintergrund: Die Untersuchung des Bewegungsumfangs ist fester Bestandteil des Assessments bei Patienten mit Nackenschmerz. Bewegungseinschränkungen gelten als sicheres Zeichen für akute Schmerzzustände. Bei chronischem Nackenschmerz ist das Vorhandensein von Bewegungseinschränkungen jedoch fraglich.
Ziel: Die vorliegende Erhebung untersuchte, ob Patienten mit chronischem Nackenschmerz Bewegungseinschränkungen aufweisen.
Methode: 60 gesunde Probanden und 60 Patienten mit chronischem Nackenschmerz wurden mittels Ultraschalltopometrie während zyklischer Bewegungen der HWS bezüglich des Bewegungsumfangs untersucht und die Mittelwerte beider Gruppen auf signifikante Unterschiede überprüft. Ferner erfolgte die Klassifikation der gemessenen Bewegungsumfänge anhand geschlechts- und altersspezifischer Normwerte als normal, hypermobil oder hypomobil. Für die Validität des Befundes „hypomobil“ in Bezug auf die Erkennung des chronischen Nackenschmerzes wurden die Sensitivität, die Spezifität sowie die positive (LR+) und die negative Likelihood Ratio (LR–) ermittelt.
Ergebnisse: Die durchschnittlichen Bewegungsumfänge beider Gruppen unterschieden sich in alle Richtungen signifikant. Im Vergleich zu den Normwerten wiesen mehr als drei Viertel der Teilnehmer beider Gruppen eine normale Beweglichkeit auf. Die Sensitivität des Kriteriums „Hypomobilität“ lag bei maximal 0,23, die Spezifität bei über 0,9, die LR+ bei maximal 0,93 und der niedrigste Wert der LR– bei 0,65.
Schlussfolgerung: Beim chronischen Nackenschmerz ist das Bewegungsausmaß der HWS nicht vermindert. Für das Assessment fehlt ein objektiver Parameter, der mit psychosozialen Variablen korreliert und von Physiotherapeuten gemessen werden kann.
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Schmidt C, Karge B, Misgeld R, Prokop A, Franke R, Brönstrup M, Ott I. Gold(I) NHC Complexes: Antiproliferative Activity, Cellular Uptake, Inhibition of Mammalian and Bacterial Thioredoxin Reductases, and Gram-Positive Directed Antibacterial Effects. Chemistry 2017; 23:1869-1880. [DOI: 10.1002/chem.201604512] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Indexed: 12/29/2022]
Affiliation(s)
- Claudia Schmidt
- Institute of Medicinal and Pharmaceutical Chemistry; Technische Universität Braunschweig; Beethovenstrasse 55 38106 Braunschweig Germany
| | - Bianka Karge
- Department of Chemical Biology; Helmholtz Centre for Infection Research GmbH; Inhoffenstrasse 7 38124 Braunschweig Germany
| | - Rainer Misgeld
- Department of Paedriatric Oncology; Children's Hospital Cologne; Amsterdamer Strasse 59 50735 Cologne Germany
| | - Aram Prokop
- Department of Paedriatric Oncology; Children's Hospital Cologne; Amsterdamer Strasse 59 50735 Cologne Germany
| | - Raimo Franke
- Department of Chemical Biology; Helmholtz Centre for Infection Research GmbH; Inhoffenstrasse 7 38124 Braunschweig Germany
| | - Mark Brönstrup
- Department of Chemical Biology; Helmholtz Centre for Infection Research GmbH; Inhoffenstrasse 7 38124 Braunschweig Germany
| | - Ingo Ott
- Institute of Medicinal and Pharmaceutical Chemistry; Technische Universität Braunschweig; Beethovenstrasse 55 38106 Braunschweig Germany
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21
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Abidi N, Franke R, Findeisen P, Klawonn F. Alignment of time-resolved data from high throughput experiments. J Bioinform Comput Biol 2016; 14:1650030. [PMID: 27629153 DOI: 10.1142/s021972001650030x] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
To better understand the dynamics of the underlying processes in cells, it is necessary to take measurements over a time course. Modern high-throughput technologies are often used for this purpose to measure the behavior of cell products like metabolites, peptides, proteins, [Formula: see text]RNA or mRNA at different points in time. Compared to classical time series, the number of time points is usually very limited and the measurements are taken at irregular time intervals. The main reasons for this are the costs of the experiments and the fact that the dynamic behavior usually shows a strong reaction and fast changes shortly after a stimulus and then slowly converges to a certain stable state. Another reason might simply be missing values. It is common to repeat the experiments and to have replicates in order to carry out a more reliable analysis. The ideal assumptions that the initial stimulus really started exactly at the same time for all replicates and that the replicates are perfectly synchronized are seldom satisfied. Therefore, there is a need to first adjust or align the time-resolved data before further analysis is carried out. Dynamic time warping (DTW) is considered as one of the common alignment techniques for time series data with equidistant time points. In this paper, we modified the DTW algorithm so that it can align sequences with measurements at different, non-equidistant time points with large gaps in between. This type of data is usually known as time-resolved data characterized by irregular time intervals between measurements as well as non-identical time points for different replicates. This new algorithm can be easily used to align time-resolved data from high-throughput experiments and to come across existing problems such as time scarcity and existing noise in the measurements. We propose a modified method of DTW to adapt requirements imposed by time-resolved data by use of monotone cubic interpolation splines. Our presented approach provides a nonlinear alignment of two sequences that neither need to have equi-distant time points nor measurements at identical time points. The proposed method is evaluated with artificial as well as real data. The software is available as an R package tra (Time-Resolved data Alignment) which is freely available at: http://public.ostfalia.de/klawonn/tra.zip .
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Affiliation(s)
- Nada Abidi
- 1 Biostatistics, Helmholtz Centre for Infection Research, Inhoffenstr. 7, D-38124 Braunschweig, Germany
| | - Raimo Franke
- 2 Chemical Biology, Helmholtz Centre for Infection Research, Inhoffenstr. 7, D-38124 Braunschweig, Germany
| | - Peter Findeisen
- 3 Institute for Clinical Chemistry, Medical Faculty Mannheim, Heidelberg University Theodor-Kutzer-Ufer 1-3, D-68167 Mannheim, Germany
| | - Frank Klawonn
- 1 Biostatistics, Helmholtz Centre for Infection Research, Inhoffenstr. 7, D-38124 Braunschweig, Germany.,4 Department of Computer Science, Ostfalia University of Applied Sciences Salzdahlumer Str. 46/48, D-38302 Wolfenbuettel, Germany
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22
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Franke R, Haßelberg J, Stenger F. ROMEO - A Major Step toward more Sustainable Processes. CHEM-ING-TECH 2016. [DOI: 10.1002/cite.201650143] [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: 11/06/2022]
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23
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Binder SC, Eckweiler D, Schulz S, Bielecka A, Nicolai T, Franke R, Häussler S, Meyer-Hermann M. Functional modules of sigma factor regulons guarantee adaptability and evolvability. Sci Rep 2016; 6:22212. [PMID: 26915971 PMCID: PMC4768184 DOI: 10.1038/srep22212] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [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: 09/22/2015] [Accepted: 02/10/2016] [Indexed: 01/30/2023] Open
Abstract
The focus of modern molecular biology turns from assigning functions to individual genes towards understanding the expression and regulation of complex sets of molecules. Here, we provide evidence that alternative sigma factor regulons in the pathogen Pseudomonas aeruginosa largely represent insulated functional modules which provide a critical level of biological organization involved in general adaptation and survival processes. Analysis of the operational state of the sigma factor network revealed that transcription factors functionally couple the sigma factor regulons and significantly modulate the transcription levels in the face of challenging environments. The threshold quality of newly evolved transcription factors was reached faster and more robustly in in silico testing when the structural organization of sigma factor networks was taken into account. These results indicate that the modular structures of alternative sigma factor regulons provide P. aeruginosa with a robust framework to function adequately in its environment and at the same time facilitate evolutionary change. Our data support the view that widespread modularity guarantees robustness of biological networks and is a key driver of evolvability.
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Affiliation(s)
- Sebastian C Binder
- Department of Systems Immunology and Braunschweig Integrated Centre of Systems Biology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany
| | - Denitsa Eckweiler
- Institute for Molecular Bacteriology, TWINCORE GmbH, Center for Clinical and Experimental Infection Research, a joint venture of the Hannover Medical School and the Helmholtz Center for Infection Research, 30265 Hannover, Germany.,Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany
| | - Sebastian Schulz
- Institute for Molecular Bacteriology, TWINCORE GmbH, Center for Clinical and Experimental Infection Research, a joint venture of the Hannover Medical School and the Helmholtz Center for Infection Research, 30265 Hannover, Germany.,Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany
| | - Agata Bielecka
- Institute for Molecular Bacteriology, TWINCORE GmbH, Center for Clinical and Experimental Infection Research, a joint venture of the Hannover Medical School and the Helmholtz Center for Infection Research, 30265 Hannover, Germany.,Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany
| | - Tanja Nicolai
- Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany
| | - Raimo Franke
- Department of Chemical Biology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany
| | - Susanne Häussler
- Institute for Molecular Bacteriology, TWINCORE GmbH, Center for Clinical and Experimental Infection Research, a joint venture of the Hannover Medical School and the Helmholtz Center for Infection Research, 30265 Hannover, Germany.,Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany
| | - Michael Meyer-Hermann
- Department of Systems Immunology and Braunschweig Integrated Centre of Systems Biology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany.,Institute for Biochemistry, Biotechnology and Bioinformatics, Technische Universität Braunschweig, 38124 Braunschweig, Germany
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24
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Behr A, Kämper A, Kuhlmann R, Vorholt AJ, Franke R. First efficient catalyst recycling for the iridium-catalysed hydroformylation of 1-octene. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01018g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [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 paper describes the development of an efficient catalyst recycling concept for the iridium-catalysed hydroformylation of 1-octene through the investigation of biphasic systems, thermomorphic solvent systems and an ex situ extraction.
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Affiliation(s)
- A. Behr
- Technische Universität Dortmund
- Lehrstuhl für Technische Chemie
- 44227 Dortmund
- Germany
| | - A. Kämper
- Technische Universität Dortmund
- Lehrstuhl für Technische Chemie
- 44227 Dortmund
- Germany
| | - R. Kuhlmann
- Technische Universität Dortmund
- Lehrstuhl für Technische Chemie
- 44227 Dortmund
- Germany
| | - A. J. Vorholt
- Technische Universität Dortmund
- Lehrstuhl für Technische Chemie
- 44227 Dortmund
- Germany
| | - R. Franke
- Evonik Performance Materials GmbH
- 45772 Marl
- Germany
- Ruhr-Universität Bochum
- 44780 Bochum
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25
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Suryanarayana Birudukota NV, Franke R, Hofer B. An approach to “escape from flatland”: chemo-enzymatic synthesis and biological profiling of a library of bridged bicyclic compounds. Org Biomol Chem 2016; 14:3821-37. [DOI: 10.1039/c5ob02539g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A small library of 78 bridged bicyclic compounds were synthesized via a chemo-enzymatic pathway. Biological evaluation suggested that rigid spherical scaffolds are useful to enhance the success rate of compound libraries for drug development.
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Affiliation(s)
| | - Raimo Franke
- Department of Chemical Biology
- Helmholtz Centre for Infection Research
- D-38124 Braunschweig
- Germany
| | - Bernd Hofer
- Department of Chemical Biology
- Helmholtz Centre for Infection Research
- D-38124 Braunschweig
- Germany
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26
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Kałka D, Domagała Z, Rakowska A, Womperski K, Franke R, Sylwina-Krauz E, Stanisz J, Piłot M, Gebala J, Rusiecki L, Pilecki W. Modifiable risk factors for erectile dysfunction: an assessment of the awareness of such factors in patients suffering from ischaemic heart disease. Int J Impot Res 2015; 28:14-9. [DOI: 10.1038/ijir.2015.26] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2014] [Revised: 04/28/2015] [Accepted: 08/12/2015] [Indexed: 11/09/2022]
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Naini A, Muthukumar Y, Raja A, Franke R, Harrier I, Smith AB, Lee D, Taylor RE, Sasse F, Kalesse M. Die Synthese und biologische Validierung von Desepoxyisotedanolid und dessen Vergleich mit Desepoxytedanolid. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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28
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Naini A, Muthukumar Y, Raja A, Franke R, Harrier I, Smith AB, Lee D, Taylor RE, Sasse F, Kalesse M. The synthesis and biological evaluation of desepoxyisotedanolide and a comparison with desepoxytedanolide. Angew Chem Int Ed Engl 2015; 54:6935-9. [PMID: 25914374 DOI: 10.1002/anie.201501526] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 02/16/2015] [Indexed: 11/10/2022]
Abstract
The tedanolides are biologically active polyketides that exhibit a macrolactone constructed from a primary alcohol. Since polyketidal transformations only generate secondary alcohols, it has been hypothesized by Taylor that this unique lactone could arise from a postketidal transesterification. In order to probe this hypothesis and to investigate the biological profile of the putative precursor of all members of the tedanolide family, we embarked on the synthesis of desepoxyisotedanolide and its biological evaluation in comparison to desepoxytedanolide. The biological experiments unraveled a second target for desepoxytedanolide and provided evidence that the proposed transesterification indeed provides a survival advantage for the producing microorganism.
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Affiliation(s)
- Arun Naini
- Institute for Organic Chemistry, Leibniz Universität Hannover and Centre of Biomolecular Drug Research (BMWZ), Schneiderberg 1B, 30655 Hannover (Germany)
| | - Yazh Muthukumar
- Department of Chemical Biology, Helmholtz Centre for Infection Research (HZI), Inhoffenstr. 7, Braunschweig (Germany)
| | - Aruna Raja
- Department of Chemical Biology, Helmholtz Centre for Infection Research (HZI), Inhoffenstr. 7, Braunschweig (Germany)
| | - Raimo Franke
- Department of Chemical Biology, Helmholtz Centre for Infection Research (HZI), Inhoffenstr. 7, Braunschweig (Germany)
| | - Ian Harrier
- Department of Chemistry & Biochemistry and Harper Cancer Research Institute, University of Notre Dame, Notre Dame, IN 46556-567 (USA)
| | - Amos B Smith
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104 (USA)
| | - Dongjoo Lee
- College of Pharmacy, Ajou University, 206 Worldcup-ro, Yeongtong-gu, Suwon 443-749 (Korea)
| | - Richard E Taylor
- Department of Chemistry & Biochemistry and Harper Cancer Research Institute, University of Notre Dame, Notre Dame, IN 46556-567 (USA)
| | - Florenz Sasse
- Department of Chemical Biology, Helmholtz Centre for Infection Research (HZI), Inhoffenstr. 7, Braunschweig (Germany)
| | - Markus Kalesse
- Institute for Organic Chemistry, Leibniz Universität Hannover and Centre of Biomolecular Drug Research (BMWZ), Schneiderberg 1B, 30655 Hannover (Germany).
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29
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Schulz S, Eckweiler D, Bielecka A, Nicolai T, Franke R, Dötsch A, Hornischer K, Bruchmann S, Düvel J, Häussler S. Elucidation of sigma factor-associated networks in Pseudomonas aeruginosa reveals a modular architecture with limited and function-specific crosstalk. PLoS Pathog 2015; 11:e1004744. [PMID: 25780925 PMCID: PMC4362757 DOI: 10.1371/journal.ppat.1004744] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 02/11/2015] [Indexed: 12/31/2022] Open
Abstract
Sigma factors are essential global regulators of transcription initiation in bacteria which confer promoter recognition specificity to the RNA polymerase core enzyme. They provide effective mechanisms for simultaneously regulating expression of large numbers of genes in response to challenging conditions, and their presence has been linked to bacterial virulence and pathogenicity. In this study, we constructed nine his-tagged sigma factor expressing and/or deletion mutant strains in the opportunistic pathogen Pseudomonas aeruginosa. To uncover the direct and indirect sigma factor regulons, we performed mRNA profiling, as well as chromatin immunoprecipitation coupled to high-throughput sequencing. We furthermore elucidated the de novo binding motif of each sigma factor, and validated the RNA- and ChIP-seq results by global motif searches in the proximity of transcriptional start sites (TSS). Our integrated approach revealed a highly modular network architecture which is composed of insulated functional sigma factor modules. Analysis of the interconnectivity of the various sigma factor networks uncovered a limited, but highly function-specific, crosstalk which orchestrates complex cellular processes. Our data indicate that the modular structure of sigma factor networks enables P. aeruginosa to function adequately in its environment and at the same time is exploited to build up higher-level functions by specific interconnections that are dominated by a participation of RpoN. Pseudomonas aeruginosa is well known for its high adaptability to a large range of environmental conditions, including those encountered within the human host. Transcription initiation represents a major regulatory target which drives versatility, and enables bacterial adaptation to challenging conditions and expression of virulence and pathogenicity. In bacteria, this process is largely orchestrated by sigma factors. Here, we performed an integrative approach, and by the combined use of three global profiling technologies uncovered the networks of 10 alternative sigma factors in the opportunistic pathogen P. aeruginosa. We demonstrate that these networks largely represent self-contained functional modules which exhibit a limited but highly specific crosstalk to build up higher-level functions. Our results do not only give extensive information on sigma factor binding sites throughout the P. aeruginosa genome, but also advance the understanding of sigma factor network architecture which provides bacteria with a framework to function adequately in their environment.
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Affiliation(s)
- Sebastian Schulz
- Institute for Molecular Bacteriology, TWINCORE GmbH, Center for Clinical and Experimental Infection Research, a joint venture of the Hannover Medical School and the Helmholtz Centre for Infection Research, Hannover, Germany
- Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Denitsa Eckweiler
- Institute for Molecular Bacteriology, TWINCORE GmbH, Center for Clinical and Experimental Infection Research, a joint venture of the Hannover Medical School and the Helmholtz Centre for Infection Research, Hannover, Germany
- Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Agata Bielecka
- Institute for Molecular Bacteriology, TWINCORE GmbH, Center for Clinical and Experimental Infection Research, a joint venture of the Hannover Medical School and the Helmholtz Centre for Infection Research, Hannover, Germany
- Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Tanja Nicolai
- Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Raimo Franke
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Andreas Dötsch
- Institute for Molecular Bacteriology, TWINCORE GmbH, Center for Clinical and Experimental Infection Research, a joint venture of the Hannover Medical School and the Helmholtz Centre for Infection Research, Hannover, Germany
- Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Klaus Hornischer
- Institute for Molecular Bacteriology, TWINCORE GmbH, Center for Clinical and Experimental Infection Research, a joint venture of the Hannover Medical School and the Helmholtz Centre for Infection Research, Hannover, Germany
- Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Sebastian Bruchmann
- Institute for Molecular Bacteriology, TWINCORE GmbH, Center for Clinical and Experimental Infection Research, a joint venture of the Hannover Medical School and the Helmholtz Centre for Infection Research, Hannover, Germany
- Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Juliane Düvel
- Institute for Molecular Bacteriology, TWINCORE GmbH, Center for Clinical and Experimental Infection Research, a joint venture of the Hannover Medical School and the Helmholtz Centre for Infection Research, Hannover, Germany
- Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Susanne Häussler
- Institute for Molecular Bacteriology, TWINCORE GmbH, Center for Clinical and Experimental Infection Research, a joint venture of the Hannover Medical School and the Helmholtz Centre for Infection Research, Hannover, Germany
- Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, Braunschweig, Germany
- * E-mail:
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Franke R, Bräuer A, Emmert A, Hinterthaner M, Brandes I, Quintel M, Danner B, Schöndube F. Prevention of Perioperative Hypothermia in VATS: A Prospective Randomised Controlled Trial Comparing Forced-Air Warming with Conductive Warming. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1544372] [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: 10/24/2022]
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Lu HH, Hinkelmann B, Tautz T, Li J, Sasse F, Franke R, Kalesse M. Paleo-soraphens: chemical total syntheses and biological studies. Org Biomol Chem 2015; 13:8029-36. [DOI: 10.1039/c5ob01249j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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
To provide a picture of the hypothetical evolutionary optimization of soraphen four additional paleo-soraphens and their biological profiles are described.
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Affiliation(s)
- Hai-Hua Lu
- Institute for Organic Chemistry and Centre for Biomolecular Drug Research (BMWZ)
- Leibniz Universität Hannover
- 30167 Hannover
- Germany
| | - Bettina Hinkelmann
- Department of Chemical Biology
- Helmholtz Centre for Infection Research (HZI)
- Braunschweig
- Germany
| | - Thomas Tautz
- Institute for Organic Chemistry and Centre for Biomolecular Drug Research (BMWZ)
- Leibniz Universität Hannover
- 30167 Hannover
- Germany
| | - Jun Li
- Institute for Organic Chemistry and Centre for Biomolecular Drug Research (BMWZ)
- Leibniz Universität Hannover
- 30167 Hannover
- Germany
| | - Florenz Sasse
- Department of Chemical Biology
- Helmholtz Centre for Infection Research (HZI)
- Braunschweig
- Germany
| | - Raimo Franke
- Department of Chemical Biology
- Helmholtz Centre for Infection Research (HZI)
- Braunschweig
- Germany
| | - Markus Kalesse
- Institute for Organic Chemistry and Centre for Biomolecular Drug Research (BMWZ)
- Leibniz Universität Hannover
- 30167 Hannover
- Germany
- Department of Chemical Biology
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Franke R, Bräuer A, Emmert A, Hinterthaner M, Brandes I, Quintel M, Danner B, Schöndube F. Vermeidung perioperativer Hypothermie: prospektiv randomisierte Studie bei minimalinvasiven thoraxchirurgischen Eingriffen. Zentralbl Chir 2014. [DOI: 10.1055/s-0034-1389350] [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: 10/24/2022]
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Grausem B, Widemann E, Verdier G, Nosbüsch D, Aubert Y, Beisson F, Schreiber L, Franke R, Pinot F. CYP77A19 and CYP77A20 characterized from Solanum tuberosum oxidize fatty acids in vitro and partially restore the wild phenotype in an Arabidopsis thaliana cutin mutant. Plant Cell Environ 2014; 37:2102-2115. [PMID: 24520956 DOI: 10.1111/pce.12298] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Accepted: 01/23/2014] [Indexed: 06/03/2023]
Abstract
Cutin and suberin represent lipophilic polymers forming plant/environment interfaces in leaves and roots. Despite recent progress in Arabidopsis, there is still a lack on information concerning cutin and suberin synthesis, especially in crops. Based on sequence homology, we isolated two cDNA clones of new cytochrome P450s, CYP77A19 and CYP77A20 from potato tubers (Solanum tuberosum). Both enzymes hydroxylated lauric acid (C12:0) on position ω-1 to ω-5. They oxidized fatty acids with chain length ranging from C12 to C18 and catalysed hydroxylation of 16-hydroxypalmitic acid leading to dihydroxypalmitic (DHP) acids, the major C16 cutin and suberin monomers. CYP77A19 also produced epoxides from linoleic acid (C18:2). Exploration of expression pattern in potato by RT-qPCR revealed the presence of transcripts in all tissues tested with the highest expression in the seed compared with leaves. Water stress enhanced their expression level in roots but not in leaves. Application of methyl jasmonate specifically induced CYP77A19 expression. Expression of either gene in the Arabidopsis null mutant cyp77a6-1 defective in flower cutin restored petal cuticular impermeability. Nanoridges were also observed in CYP77A20-expressing lines. However, only very low levels of the major flower cutin monomer 10,16-dihydroxypalmitate and no C18 epoxy monomers were found in the cutin of the complemented lines.
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Affiliation(s)
- B Grausem
- Département Réseaux Metaboliques chez les Végétaux, IBMP-UDS-CNRS UPR 2357, Strasbourg, F-67083, France
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Lu HH, Raja A, Franke R, Landsberg D, Sasse F, Kalesse M. Die Synthese und biologische Evaluierung von Paläo-Soraphenen. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305331] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Lu HH, Raja A, Franke R, Landsberg D, Sasse F, Kalesse M. Synthesis and Biological Evaluation of Paleo-Soraphens. Angew Chem Int Ed Engl 2013; 52:13549-52. [DOI: 10.1002/anie.201305331] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 09/09/2013] [Indexed: 01/26/2023]
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Frei R, Staedler D, Raja A, Franke R, Sasse F, Gerber-Lemaire S, Waser J. Total Synthesis and Biological Evaluation of Jerantinine E. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305533] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Frei R, Staedler D, Raja A, Franke R, Sasse F, Gerber-Lemaire S, Waser J. Total Synthesis and Biological Evaluation of Jerantinine E. Angew Chem Int Ed Engl 2013; 52:13373-6. [DOI: 10.1002/anie.201305533] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Indexed: 11/07/2022]
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Franke R, Ivanova G. FALCON or how to compute measures time efficiently on dynamically evolving dense complex networks? J Biomed Inform 2013; 47:62-70. [PMID: 24060602 DOI: 10.1016/j.jbi.2013.09.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 02/07/2013] [Revised: 08/07/2013] [Accepted: 09/10/2013] [Indexed: 10/26/2022]
Abstract
A large number of topics in biology, medicine, neuroscience, psychology and sociology can be generally described via complex networks in order to investigate fundamental questions of structure, connectivity, information exchange and causality. Especially, research on biological networks like functional spatiotemporal brain activations and changes, caused by neuropsychiatric pathologies, is promising. Analyzing those so-called complex networks, the calculation of meaningful measures can be very long-winded depending on their size and structure. Even worse, in many labs only standard desktop computers are accessible to perform those calculations. Numerous investigations on complex networks regard huge but sparsely connected network structures, where most network nodes are connected to only a few others. Currently, there are several libraries available to tackle this kind of networks. A problem arises when not only a few big and sparse networks have to be analyzed, but hundreds or thousands of smaller and conceivably dense networks (e.g. in measuring brain activation over time). Then every minute per network is crucial. For these cases there several possibilities to use standard hardware more efficiently. It is not sufficient to apply just standard algorithms for dense graph characteristics. This article introduces the new library FALCON developed especially for the exploration of dense complex networks. Currently, it offers 12 different measures (like clustering coefficients), each for undirected-unweighted, undirected-weighted and directed-unweighted networks. It uses a multi-core approach in combination with comprehensive code and hardware optimizations. There is an alternative massively parallel GPU implementation for the most time-consuming measures, too. Finally, a comparing benchmark is integrated to support the choice of the most suitable library for a particular network issue.
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Affiliation(s)
- R Franke
- Institute of Computer Science, Humboldt-Universität zu Berlin, Unter den Linden 6, 10099 Berlin, Germany.
| | - G Ivanova
- Institute of Computer Science, Humboldt-Universität zu Berlin, Unter den Linden 6, 10099 Berlin, Germany.
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Aartsen MG, Abbasi R, Abdou Y, Ackermann M, Adams J, Aguilar JA, Ahlers M, Altmann D, Auffenberg J, Bai X, Baker M, Barwick SW, Baum V, Bay R, Beatty JJ, Bechet S, Becker Tjus J, Becker KH, Bell M, Benabderrahmane ML, Benzvi S, Berdermann J, Berghaus P, Berley D, Bernardini E, Bernhard A, Bertrand D, Besson DZ, Binder G, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohaichuk S, Bohm C, Bose D, Böser S, Botner O, Brayeur L, Bretz HP, Brown AM, Bruijn R, Brunner J, Carson M, Casey J, Casier M, Chirkin D, Christov A, Christy B, Clark K, Clevermann F, Coenders S, Cohen S, Cowen DF, Cruz Silva AH, Danninger M, Daughhetee J, Davis JC, De Clercq C, De Ridder S, Desiati P, de With M, DeYoung T, Díaz-Vélez JC, Dunkman M, Eagan R, Eberhardt B, Eisch J, Ellsworth RW, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feintzeig J, Feusels T, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Franckowiak A, Franke R, Frantzen K, Fuchs T, Gaisser TK, Gallagher J, Gerhardt L, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Gonzalez JG, Goodman JA, Góra D, Grandmont DT, Grant D, Groß A, Ha C, Haj Ismail A, Hallen P, Hallgren A, Halzen F, Hanson K, Heereman D, Heinen D, Helbing K, Hellauer R, Hickford S, Hill GC, Hoffman KD, Hoffmann R, Homeier A, Hoshina K, Huelsnitz W, Hulth PO, Hultqvist K, Hussain S, Ishihara A, Jacobi E, Jacobsen J, Jagielski K, Japaridze GS, Jero K, Jlelati O, Kaminsky B, Kappes A, Karg T, Karle A, Kelley JL, Kiryluk J, Kislat F, Kläs J, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krasberg M, Krings K, Kroll G, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Landsman H, Larson MJ, Lesiak-Bzdak M, Leuermann M, Leute J, Lünemann J, Madsen J, Maruyama R, Mase K, Matis HS, McNally F, Meagher K, Merck M, Mészáros P, Meures T, Miarecki S, Middell E, Milke N, Miller J, Mohrmann L, Montaruli T, Morse R, Nahnhauer R, Naumann U, Niederhausen H, Nowicki SC, Nygren DR, Obertacke A, Odrowski S, Olivas A, Olivo M, O'Murchadha A, Palazzo A, Paul L, Pepper JA, Pérez de los Heros C, Pfendner C, Pieloth D, Pinat E, Pirk N, Posselt J, Price PB, Przybylski GT, Rädel L, Rameez M, Rawlins K, Redl P, Reimann R, Resconi E, Rhode W, Ribordy M, Richman M, Riedel B, Rodrigues JP, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Salameh T, Sander HG, Santander M, Sarkar S, Schatto K, Scheel M, Scheriau F, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Sestayo Y, Seunarine S, Sheremata C, Smith MWE, Soldin D, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Sullivan GW, Taavola H, Taboada I, Tamburro A, Tepe A, Ter-Antonyan S, Tešić G, Tilav S, Toale PA, Toscano S, Usner M, van der Drift D, van Eijndhoven N, Van Overloop A, van Santen J, Vehring M, Voge M, Vraeghe M, Walck C, Waldenmaier T, Wallraff M, Wasserman R, Weaver C, Wellons M, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu C, Xu DL, Xu XW, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Ziemann J, Zierke S, Zoll M. Measurement of atmospheric neutrino oscillations with IceCube. Phys Rev Lett 2013; 111:081801. [PMID: 24010427 DOI: 10.1103/physrevlett.111.081801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Indexed: 06/02/2023]
Abstract
We present the first statistically significant detection of neutrino oscillations in the high-energy regime (>20 GeV) from an analysis of IceCube Neutrino Observatory data collected in 2010 and 2011. This measurement is made possible by the low-energy threshold of the DeepCore detector (~20 GeV) and benefits from the use of the IceCube detector as a veto against cosmic-ray-induced muon background. The oscillation signal was detected within a low-energy muon neutrino sample (20-100 GeV) extracted from data collected by DeepCore. A high-energy muon neutrino sample (100 GeV-10 TeV) was extracted from IceCube data to constrain systematic uncertainties. The disappearance of low-energy upward-going muon neutrinos was observed, and the nonoscillation hypothesis is rejected with more than 5σ significance. In a two-neutrino flavor formalism, our data are best described by the atmospheric neutrino oscillation parameters |Δm(32)(2)|=(2.3(-0.5)(+0.6))×10(-3) eV(2) and sin(2)(2θ(23))>0.93, and maximum mixing is favored.
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Affiliation(s)
- M G Aartsen
- School of Chemistry and Physics, University of Adelaide, Adelaide South Australia, 5005 Australia
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Aartsen MG, Abbasi R, Abdou Y, Ackermann M, Adams J, Aguilar JA, Ahlers M, Altmann D, Auffenberg J, Bai X, Baker M, Barwick SW, Baum V, Bay R, Beatty JJ, Bechet S, Becker Tjus J, Becker KH, Bell M, Benabderrahmane ML, BenZvi S, Berdermann J, Berghaus P, Berley D, Bernardini E, Bernhard A, Bertrand D, Besson DZ, Binder G, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohaichuk S, Bohm C, Bose D, Böser S, Botner O, Brayeur L, Bretz HP, Brown AM, Bruijn R, Brunner J, Carson M, Casey J, Casier M, Chirkin D, Christov A, Christy B, Clark K, Clevermann F, Coenders S, Cohen S, Cowen DF, Cruz Silva AH, Danninger M, Daughhetee J, Davis JC, De Clercq C, De Ridder S, Desiati P, de With M, DeYoung T, Díaz-Vélez JC, Dunkman M, Eagan R, Eberhardt B, Eisch J, Ellsworth RW, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feintzeig J, Feusels T, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Franckowiak A, Franke R, Frantzen K, Fuchs T, Gaisser TK, Gallagher J, Gerhardt L, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Gonzalez JG, Goodman JA, Góra D, Grant D, Groß A, Gurtner M, Ha C, Haj Ismail A, Hallen P, Hallgren A, Halzen F, Hanson K, Heereman D, Heinen D, Helbing K, Hellauer R, Hickford S, Hill GC, Hoffman KD, Hoffmann R, Homeier A, Hoshina K, Huelsnitz W, Hulth PO, Hultqvist K, Hussain S, Ishihara A, Jacobi E, Jacobsen J, Jagielski K, Japaridze GS, Jero K, Jlelati O, Kaminsky B, Kappes A, Karg T, Karle A, Kelley JL, Kiryluk J, Kislat F, Kläs J, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krasberg M, Krings K, Kroll G, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Landsman H, Larson MJ, Lesiak-Bzdak M, Leuermann M, Leute J, Lünemann J, Madsen J, Maruyama R, Mase K, Matis HS, McNally F, Meagher K, Merck M, Mészáros P, Meures T, Miarecki S, Middell E, Milke N, Miller J, Mohrmann L, Montaruli T, Morse R, Nahnhauer R, Naumann U, Niederhausen H, Nowicki SC, Nygren DR, Obertacke A, Odrowski S, Olivas A, Olivo M, O'Murchadha A, Paul L, Pepper JA, Pérez de los Heros C, Pfendner C, Pieloth D, Pinat E, Pirk N, Posselt J, Price PB, Przybylski GT, Rädel L, Rameez M, Rawlins K, Redl P, Reimann R, Resconi E, Rhode W, Ribordy M, Richman M, Riedel B, Rodrigues JP, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Salameh T, Sander HG, Santander M, Sarkar S, Schatto K, Scheel M, Scheriau F, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Sestayo Y, Seunarine S, Sheremata C, Smith MWE, Soiron M, Soldin D, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Sullivan GW, Taavola H, Taboada I, Tamburro A, Ter-Antonyan S, Tešić G, Tilav S, Toale PA, Toscano S, Usner M, van der Drift D, van Eijndhoven N, Van Overloop A, van Santen J, Vehring M, Voge M, Vraeghe M, Walck C, Waldenmaier T, Wallraff M, Wasserman R, Weaver C, Wellons M, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu C, Xu DL, Xu XW, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Ziemann J, Zierke S, Zilles A, Zoll M. First observation of PeV-energy neutrinos with IceCube. Phys Rev Lett 2013; 111:021103. [PMID: 23889381 DOI: 10.1103/physrevlett.111.021103] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Indexed: 06/02/2023]
Abstract
We report on the observation of two neutrino-induced events which have an estimated deposited energy in the IceCube detector of 1.04±0.16 and 1.14±0.17 PeV, respectively, the highest neutrino energies observed so far. These events are consistent with fully contained particle showers induced by neutral-current ν(e,μ,τ) (ν(e,μ,τ)) or charged-current ν(e) (ν(e)) interactions within the IceCube detector. The events were discovered in a search for ultrahigh energy neutrinos using data corresponding to 615.9 days effective live time. The expected number of atmospheric background is 0.082±0.004(stat)(-0.057)(+0.041)(syst). The probability of observing two or more candidate events under the atmospheric background-only hypothesis is 2.9×10(-3) (2.8σ) taking into account the uncertainty on the expected number of background events. These two events could be a first indication of an astrophysical neutrino flux; the moderate significance, however, does not permit a definitive conclusion at this time.
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Affiliation(s)
- M G Aartsen
- School of Chemistry and Physics, University of Adelaide, Adelaide South Australia 5005, Australia
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Aartsen MG, Abbasi R, Abdou Y, Ackermann M, Adams J, Aguilar JA, Ahlers M, Altmann D, Auffenberg J, Bai X, Baker M, Barwick SW, Baum V, Bay R, Beattie K, Beatty JJ, Bechet S, Becker Tjus J, Becker KH, Bell M, Benabderrahmane ML, BenZvi S, Berdermann J, Berghaus P, Berley D, Bernardini E, Bernhard A, Bertrand D, Besson DZ, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohaichuk S, Bohm C, Bose D, Böser S, Botner O, Brayeur L, Brown AM, Bruijn R, Brunner J, Buitink S, Carson M, Casey J, Casier M, Chirkin D, Christy B, Clark K, Clevermann F, Cohen S, Cowen DF, Cruz Silva AH, Danninger M, Daughhetee J, Davis JC, De Clercq C, De Ridder S, Desiati P, de Vries-Uiterweerd G, de With M, DeYoung T, Díaz-Vélez JC, Dreyer J, Dunkman M, Eagan R, Eberhardt B, Eisch J, Ellsworth RW, Engdegård O, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feintzeig J, Feusels T, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Franckowiak A, Franke R, Frantzen K, Fuchs T, Gaisser TK, Gallagher J, Gerhardt L, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Goodman JA, Góra D, Grant D, Groß A, Gurtner M, Ha C, Haj Ismail A, Hallgren A, Halzen F, Hanson K, Heereman D, Heimann P, Heinen D, Helbing K, Hellauer R, Hickford S, Hill GC, Hoffman KD, Hoffmann R, Homeier A, Hoshina K, Huelsnitz W, Hulth PO, Hultqvist K, Hussain S, Ishihara A, Jacobi E, Jacobsen J, Japaridze GS, Jero K, Jlelati O, Kaminsky B, Kappes A, Karg T, Karle A, Kelley JL, Kiryluk J, Kislat F, Kläs J, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krasberg M, Kroll G, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Landsman H, Larson MJ, Lesiak-Bzdak M, Leute J, Lünemann J, Madsen J, Maruyama R, Mase K, Matis HS, McNally F, Meagher K, Merck M, Mészáros P, Meures T, Miarecki S, Middell E, Milke N, Miller J, Mohrmann L, Montaruli T, Morse R, Nahnhauer R, Naumann U, Niederhausen H, Nowicki SC, Nygren DR, Obertacke A, Odrowski S, Olivas A, Olivo M, O'Murchadha A, Panknin S, Paul L, Pepper JA, Pérez de los Heros C, Pfendner C, Pieloth D, Pirk N, Posselt J, Price PB, Przybylski GT, Rädel L, Rawlins K, Redl P, Resconi E, Rhode W, Ribordy M, Richman M, Riedel B, Rodrigues JP, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Salameh T, Sander HG, Santander M, Sarkar S, Schatto K, Scheel M, Scheriau F, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönherr L, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Seo SH, Sestayo Y, Seunarine S, Sheremata C, Smith MWE, Soiron M, Soldin D, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Sullivan GW, Taavola H, Taboada I, Tamburro A, Ter-Antonyan S, Tilav S, Toale PA, Toscano S, Usner M, van der Drift D, van Eijndhoven N, Van Overloop A, van Santen J, Vehring M, Voge M, Vraeghe M, Walck C, Waldenmaier T, Wallraff M, Wasserman R, Weaver C, Wellons M, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu C, Xu DL, Xu XW, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Ziemann J, Zierke S, Zilles A, Zoll M. Measurement of the atmospheric νe flux in IceCube. Phys Rev Lett 2013; 110:151105. [PMID: 25167245 DOI: 10.1103/physrevlett.110.151105] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 03/14/2013] [Indexed: 06/03/2023]
Abstract
We report the first measurement of the atmospheric electron neutrino flux in the energy range between approximately 80 GeV and 6 TeV, using data recorded during the first year of operation of IceCube's DeepCore low-energy extension. Techniques to identify neutrinos interacting within the DeepCore volume and veto muons originating outside the detector are demonstrated. A sample of 1029 events is observed in 281 days of data, of which 496±66(stat)±88(syst) are estimated to be cascade events, including both electron neutrino and neutral current events. The rest of the sample includes residual backgrounds due to atmospheric muons and charged current interactions of atmospheric muon neutrinos. The flux of the atmospheric electron neutrinos is consistent with models of atmospheric neutrinos in this energy range. This constitutes the first observation of electron neutrinos and neutral current interactions in a very large volume neutrino telescope optimized for the TeV energy range.
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Affiliation(s)
- M G Aartsen
- School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - R Abbasi
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - Y Abdou
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | | | - J Adams
- Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - J A Aguilar
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - M Ahlers
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - D Altmann
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - J Auffenberg
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - X Bai
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - M Baker
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S W Barwick
- Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
| | - V Baum
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - R Bay
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - K Beattie
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J J Beatty
- Department of Physics and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA and Department of Astronomy, The Ohio State University, Columbus, Ohio 43210, USA
| | - S Bechet
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - J Becker Tjus
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - K-H Becker
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - M Bell
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | | | - S BenZvi
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | | | - D Berley
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | | | | | - D Bertrand
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - D Z Besson
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, USA
| | - D Bindig
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - M Bissok
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - E Blaufuss
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - J Blumenthal
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - D J Boersma
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany and Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - S Bohaichuk
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada
| | - C Bohm
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - D Bose
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - S Böser
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - O Botner
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - L Brayeur
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - A M Brown
- Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - R Bruijn
- Laboratory for High Energy Physics, École Polytechnique Fédérale, CH-1015 Lausanne, Switzerland
| | | | - S Buitink
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - M Carson
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - J Casey
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - M Casier
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - D Chirkin
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - B Christy
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - K Clark
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - F Clevermann
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - S Cohen
- Laboratory for High Energy Physics, École Polytechnique Fédérale, CH-1015 Lausanne, Switzerland
| | - D F Cowen
- Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, Pennsylvania 16802, USA and Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | | | - M Danninger
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - J Daughhetee
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - J C Davis
- Department of Physics and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - C De Clercq
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - S De Ridder
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - P Desiati
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - M de With
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - T DeYoung
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - J C Díaz-Vélez
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J Dreyer
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - M Dunkman
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - R Eagan
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - B Eberhardt
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - J Eisch
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - R W Ellsworth
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - O Engdegård
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - S Euler
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - P A Evenson
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - O Fadiran
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - A R Fazely
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | - A Fedynitch
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - J Feintzeig
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - T Feusels
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - K Filimonov
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - C Finley
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - T Fischer-Wasels
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - S Flis
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - A Franckowiak
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | | | - K Frantzen
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - T Fuchs
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - T K Gaisser
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - J Gallagher
- Department of Astronomy, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - L Gerhardt
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - L Gladstone
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - A Goldschmidt
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - G Golup
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - J A Goodman
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - D Góra
- DESY, D-15735 Zeuthen, Germany
| | - D Grant
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada
| | - A Groß
- T.U. Munich, D-85748 Garching, Germany
| | - M Gurtner
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - C Ha
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A Haj Ismail
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - A Hallgren
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - F Halzen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Hanson
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - D Heereman
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - P Heimann
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - D Heinen
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - K Helbing
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - R Hellauer
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - S Hickford
- Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - G C Hill
- School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - K D Hoffman
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - R Hoffmann
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - A Homeier
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - K Hoshina
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - W Huelsnitz
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - P O Hulth
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - K Hultqvist
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - S Hussain
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - A Ishihara
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | | | - J Jacobsen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - G S Japaridze
- CTSPS, Clark-Atlanta University, Atlanta, Georgia 30314, USA
| | - K Jero
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - O Jlelati
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | | | - A Kappes
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - T Karg
- DESY, D-15735 Zeuthen, Germany
| | - A Karle
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J L Kelley
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J Kiryluk
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | | | - J Kläs
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - S R Klein
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J-H Köhne
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - G Kohnen
- Université de Mons, 7000 Mons, Belgium
| | - H Kolanoski
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - L Köpke
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - C Kopper
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Kopper
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - D J Koskinen
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - M Kowalski
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - M Krasberg
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - G Kroll
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - J Kunnen
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - N Kurahashi
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - T Kuwabara
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - M Labare
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - H Landsman
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M J Larson
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - M Lesiak-Bzdak
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | - J Leute
- T.U. Munich, D-85748 Garching, Germany
| | - J Lünemann
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - J Madsen
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | - R Maruyama
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Mase
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - H S Matis
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - F McNally
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Meagher
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Merck
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - P Mészáros
- Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, Pennsylvania 16802, USA and Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - T Meures
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - S Miarecki
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | | | - N Milke
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - J Miller
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | | | - T Montaruli
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - R Morse
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - U Naumann
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - H Niederhausen
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | - S C Nowicki
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada
| | - D R Nygren
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A Obertacke
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | | | - A Olivas
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Olivo
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - A O'Murchadha
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - S Panknin
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - L Paul
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - J A Pepper
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - C Pérez de los Heros
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - C Pfendner
- Department of Physics and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - D Pieloth
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - N Pirk
- DESY, D-15735 Zeuthen, Germany
| | - J Posselt
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - P B Price
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - G T Przybylski
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - L Rädel
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - K Rawlins
- Department of Physics and Astronomy, University of Alaska Anchorage, 3211 Providence Drive, Anchorage, Alaska 99508, USA
| | - P Redl
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - E Resconi
- T.U. Munich, D-85748 Garching, Germany
| | - W Rhode
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - M Ribordy
- Laboratory for High Energy Physics, École Polytechnique Fédérale, CH-1015 Lausanne, Switzerland
| | - M Richman
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - B Riedel
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J P Rodrigues
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - C Rott
- Department of Physics and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - T Ruhe
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - B Ruzybayev
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - D Ryckbosch
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - S M Saba
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - T Salameh
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - H-G Sander
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - M Santander
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Sarkar
- Department of Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP, United Kingdom
| | - K Schatto
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - M Scheel
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - F Scheriau
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - T Schmidt
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Schmitz
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - S Schoenen
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - S Schöneberg
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - L Schönherr
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | | | - A Schukraft
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - L Schulte
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - O Schulz
- T.U. Munich, D-85748 Garching, Germany
| | - D Seckel
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - S H Seo
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - Y Sestayo
- T.U. Munich, D-85748 Garching, Germany
| | - S Seunarine
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | - C Sheremata
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada
| | - M W E Smith
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - M Soiron
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - D Soldin
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - G M Spiczak
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | | | - M Stamatikos
- Department of Physics and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - T Stanev
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - A Stasik
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - T Stezelberger
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - R G Stokstad
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A Stößl
- DESY, D-15735 Zeuthen, Germany
| | - E A Strahler
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - R Ström
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - G W Sullivan
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - H Taavola
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - I Taboada
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - A Tamburro
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - S Ter-Antonyan
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | - S Tilav
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - P A Toale
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - S Toscano
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Usner
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - D van der Drift
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - N van Eijndhoven
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - A Van Overloop
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - J van Santen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Vehring
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Voge
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - M Vraeghe
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - C Walck
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - T Waldenmaier
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - M Wallraff
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - R Wasserman
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Ch Weaver
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Wellons
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - C Wendt
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Westerhoff
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - N Whitehorn
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Wiebe
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - C H Wiebusch
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - D R Williams
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - H Wissing
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Wolf
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - T R Wood
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada
| | - K Woschnagg
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - C Xu
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - D L Xu
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - X W Xu
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | | | - G Yodh
- Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
| | - S Yoshida
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - P Zarzhitsky
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - J Ziemann
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - S Zierke
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - A Zilles
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Zoll
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
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Aartsen MG, Abbasi R, Abdou Y, Ackermann M, Adams J, Aguilar JA, Ahlers M, Altmann D, Auffenberg J, Bai X, Baker M, Barwick SW, Baum V, Bay R, Beattie K, Beatty JJ, Bechet S, Becker Tjus J, Becker KH, Bell M, Benabderrahmane ML, BenZvi S, Berdermann J, Berghaus P, Berley D, Bernardini E, Bernhard A, Bertrand D, Besson DZ, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohaichuk S, Bohm C, Bose D, Böser S, Botner O, Brayeur L, Brown AM, Bruijn R, Brunner J, Buitink S, Carson M, Casey J, Casier M, Chirkin D, Christy B, Clark K, Clevermann F, Cohen S, Cowen DF, Cruz Silva AH, Danninger M, Daughhetee J, Davis JC, De Clercq C, De Ridder S, Desiati P, de Vries-Uiterweerd G, de With M, DeYoung T, Díaz-Vélez JC, Dreyer J, Dunkman M, Eagan R, Eberhardt B, Eisch J, Ellsworth RW, Engdegård O, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feintzeig J, Feusels T, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Franckowiak A, Franke R, Frantzen K, Fuchs T, Gaisser TK, Gallagher J, Gerhardt L, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Goodman JA, Góra D, Grant D, Groß A, Gurtner M, Ha C, Haj Ismail A, Hallgren A, Halzen F, Hanson K, Heereman D, Heimann P, Heinen D, Helbing K, Hellauer R, Hickford S, Hill GC, Hoffman KD, Hoffmann R, Homeier A, Hoshina K, Huelsnitz W, Hulth PO, Hultqvist K, Hussain S, Ishihara A, Jacobi E, Jacobsen J, Japaridze GS, Jero K, Jlelati O, Kaminsky B, Kappes A, Karg T, Karle A, Kelley JL, Kiryluk J, Kislat F, Kläs J, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krasberg M, Kroll G, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Landsman H, Larson MJ, Lesiak-Bzdak M, Leute J, Lünemann J, Madsen J, Maruyama R, Mase K, Matis HS, McNally F, Meagher K, Merck M, Mészáros P, Meures T, Miarecki S, Middell E, Milke N, Miller J, Mohrmann L, Montaruli T, Morse R, Nahnhauer R, Naumann U, Niederhausen H, Nowicki SC, Nygren DR, Obertacke A, Odrowski S, Olivas A, Olivo M, O'Murchadha A, Paul L, Pepper JA, Pérez de los Heros C, Pfendner C, Pieloth D, Pirk N, Posselt J, Price PB, Przybylski GT, Rädel L, Rawlins K, Redl P, Resconi E, Rhode W, Ribordy M, Richman M, Riedel B, Rodrigues JP, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Salameh T, Sander HG, Santander M, Sarkar S, Schatto K, Scheel M, Scheriau F, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönherr L, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Seo SH, Sestayo Y, Seunarine S, Sheremata C, Smith MWE, Soiron M, Soldin D, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Sullivan GW, Taavola H, Taboada I, Tamburro A, Ter-Antonyan S, Tilav S, Toale PA, Toscano S, Usner M, van der Drift D, van Eijndhoven N, Van Overloop A, van Santen J, Vehring M, Voge M, Vraeghe M, Walck C, Waldenmaier T, Wallraff M, Wasserman R, Weaver C, Wellons M, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu C, Xu DL, Xu XW, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Ziemann J, Zierke S, Zilles A, Zoll M. Search for dark matter annihilations in the sun with the 79-string IceCube detector. Phys Rev Lett 2013; 110:131302. [PMID: 23581307 DOI: 10.1103/physrevlett.110.131302] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 02/20/2013] [Indexed: 06/02/2023]
Abstract
We have performed a search for muon neutrinos from dark matter annihilation in the center of the Sun with the 79-string configuration of the IceCube neutrino telescope. For the first time, the DeepCore subarray is included in the analysis, lowering the energy threshold and extending the search to the austral summer. The 317 days of data collected between June 2010 and May 2011 are consistent with the expected background from atmospheric muons and neutrinos. Upper limits are set on the dark matter annihilation rate, with conversions to limits on spin-dependent and spin-independent scattering cross sections of weakly interacting massive particles (WIMPs) on protons, for WIMP masses in the range 20-5000 GeV/c2. These are the most stringent spin-dependent WIMP-proton cross section limits to date above 35 GeV/c2 for most WIMP models.
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Affiliation(s)
- M G Aartsen
- School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
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Baroni B, Rodrigues R, Franke R, Geremia J, Rassier D, Vaz M. Time Course of Neuromuscular Adaptations to Knee Extensor Eccentric Training. Int J Sports Med 2013; 34:904-11. [DOI: 10.1055/s-0032-1333263] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- B. Baroni
- School of Physical Education, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - R. Rodrigues
- School of Physical Education, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - R. Franke
- School of Physical Education, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - J. Geremia
- School of Physical Education, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - D. Rassier
- Department of Kinesiology and Physical Education, McGill University, Montreal, Canada
| | - M. Vaz
- School of Physical Education, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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Dalby AR, Emam I, Franke R. Analysis of gene expression data from non-small cell lung carcinoma cell lines reveals distinct sub-classes from those identified at the phenotype level. PLoS One 2012; 7:e50253. [PMID: 23209689 PMCID: PMC3507731 DOI: 10.1371/journal.pone.0050253] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Accepted: 10/17/2012] [Indexed: 12/03/2022] Open
Abstract
Microarray data from cell lines of Non-Small Cell Lung Carcinoma (NSCLC) can be used to look for differences in gene expression between the cell lines derived from different tumour samples, and to investigate if these differences can be used to cluster the cell lines into distinct groups. Dividing the cell lines into classes can help to improve diagnosis and the development of screens for new drug candidates. The micro-array data is first subjected to quality control analysis and then subsequently normalised using three alternate methods to reduce the chances of differences being artefacts resulting from the normalisation process. The final clustering into sub-classes was carried out in a conservative manner such that sub-classes were consistent across all three normalisation methods. If there is structure in the cell line population it was expected that this would agree with histological classifications, but this was not found to be the case. To check the biological consistency of the sub-classes the set of most strongly differentially expressed genes was be identified for each pair of clusters to check if the genes that most strongly define sub-classes have biological functions consistent with NSCLC.
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Affiliation(s)
- Andrew R Dalby
- Department of Molecular Biosciences, University of Westminster, New Cavendish Street, London, United Kingdom.
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Kügler J, Schmelz S, Gentzsch J, Haid S, Pollmann E, van den Heuvel J, Franke R, Pietschmann T, Heinz DW, Collins J. High affinity peptide inhibitors of the hepatitis C virus NS3-4A protease refractory to common resistant mutants. J Biol Chem 2012; 287:39224-32. [PMID: 22965230 DOI: 10.1074/jbc.m112.393843] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Hepatitis C virus (HCV) NS3-4A protease is essential for viral replication. All current small molecular weight drugs against NS3-4A are substrate peptidomimetics that have a similar binding and resistance profile. We developed inhibitory peptides (IPs) capping the active site and binding via a novel "tyrosine" finger at an alternative NS3-4A site that is of particular interest for further HCV drug development. The peptides are not cleaved due to a combination of geometrical constraints and impairment of the oxyanion hole function. Selection and optimization through combinatorial phagemid display, protein crystallography, and further modifications resulted in a 32-amino acid peptide with a K(i) of 0.53 nm. Inhibition of viral replication in cell culture was demonstrated by fusion to a cell-penetrating peptide. Negligible susceptibility to known (A156V and R155K) resistance mutations of the NS3-4A protease was observed. This work shows for the first time that antiviral peptides can target an intracellular site and reveals a novel druggable site on the HCV protease.
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Affiliation(s)
- Jonas Kügler
- Research Group Directed Evolution, Helmholtz Centre for Infection Research (HZI), 38124 Braunschweig, Germany
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Laible M, Schoenberg SO, Weckbach S, Lettau M, Winnik E, Bischof J, Franke R, Reiser M, Kramer H. Whole-body MRI and MRA for evaluation of the prevalence of atherosclerosis in a cohort of subjectively healthy individuals. Insights Imaging 2012; 3:485-93. [PMID: 22836780 PMCID: PMC3443278 DOI: 10.1007/s13244-012-0180-1] [Citation(s) in RCA: 8] [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: 12/06/2011] [Revised: 05/23/2012] [Accepted: 06/04/2012] [Indexed: 01/07/2023] Open
Abstract
Objectives To assess the prevalence of cardiovascular findings in asymptomatic individuals by means of 1.5-T whole-body magnetic resonance imaging and angiography. Methods A cohort of 138 individuals (118 men, 20 women) with a mean age of 54 years (SD ± 7.55) was referred to whole-body MRI at 1.5-T, including contrast-enhanced whole-body MR angiography (MRA) and cardiac MRI. A total of 2,065/2,070 vessel segments (99.8%) and cardiac function were evaluated. Results Approximately one-fourth of the participating individuals had vascular abnormalities. In 17 subjects (12.3% of all subjects) significant luminal narrowing was observed in at least one vascular segment. Luminal narrowing (mild to severe) was observed in 1 (0.7% of all subjects respectively) of the renal arteries, 7 (5.0%) of the carotid arteries, and 3 (2.2%) of the pelvic and upper leg arteries, and in 17 segments (12.3%) of arteries in the lower leg. In cardiac function and perfusion imaging, wall motion disorders were observed in six patients (4.3%), with additional delayed enhancement and isolated delayed enhancement present in two cases. Functional parameters differed from reference values in 55 cases. Conclusions Even in an asymptomatic cohort of middle-aged predominantly male individuals, atherosclerotic disease is not uncommon and is detectable by whole-body MRI. Main Messages In middle-aged predominantly male individuals, atherosclerotic disease is not uncommon. Even in an asymptomatic collective, approximately one fourth had vascular abnormalities. Using whole-body MR angiography (MRA), 99.8% of 2,070 vessel segments could be evaluated.
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Affiliation(s)
- M Laible
- Department of Clinical Radiology, University Hospital Munich, Grosshadern Campus, Munich, Germany,
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Iphöfer A, Kummer A, Nimtz M, Ritter A, Arnold T, Frank R, van den Heuvel J, Kessler BM, Jänsch L, Franke R. Profiling ubiquitin linkage specificities of deubiquitinating enzymes with branched ubiquitin isopeptide probes. Chembiochem 2012; 13:1416-20. [PMID: 22689415 DOI: 10.1002/cbic.201200261] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Indexed: 12/30/2022]
Affiliation(s)
- Alexander Iphöfer
- Department of Molecular Structural Biology, Cellular Proteomics, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany
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49
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Affiliation(s)
- Martin Maier
- Institut für Organische Chemie, Universität Tübingen
| | | | - Aruna Raja
- Abteilung Chemische Biologie, Helmholtz-Zentrum für Infektionsforschung
| | - Raimo Franke
- Abteilung Chemische Biologie, Helmholtz-Zentrum für Infektionsforschung
| | - Florenz Sasse
- Abteilung Chemische Biologie, Helmholtz-Zentrum für Infektionsforschung
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50
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Lehmann D, Hupfer B, Lappan U, Pompe G, Häußler L, Jehnichen D, Janke A, Geißler U, Reinhardt R, Lunkwitz K, Franke R, Kunze K. New PTFE-polyamide compounds. Des Monomers Polym 2012. [DOI: 10.1163/156855502760158006] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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