1
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Boldini D, Friedrich L, Kuhn D, Sieber SA. Machine Learning Assisted Hit Prioritization for High Throughput Screening in Drug Discovery. ACS Cent Sci 2024; 10:823-832. [PMID: 38680560 PMCID: PMC11046457 DOI: 10.1021/acscentsci.3c01517] [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] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 03/01/2024] [Accepted: 03/01/2024] [Indexed: 05/01/2024]
Abstract
Efficient prioritization of bioactive compounds from high throughput screening campaigns is a fundamental challenge for accelerating drug development efforts. In this study, we present the first data-driven approach to simultaneously detect assay interferents and prioritize true bioactive compounds. By analyzing the learning dynamics during training of a gradient boosting model on noisy high throughput screening data using a novel formulation of sample influence, we are able to distinguish between compounds exhibiting the desired biological response and those producing assay artifacts. Therefore, our method enables false positive and true positive detection without relying on prior screens or assay interference mechanisms, making it applicable to any high throughput screening campaign. We demonstrate that our approach consistently excludes assay interferents with different mechanisms and prioritizes biologically relevant compounds more efficiently than all tested baselines, including a retrospective case study simulating its use in a real drug discovery campaign. Finally, our tool is extremely computationally efficient, requiring less than 30 s per assay on low-resource hardware. As such, our findings show that our method is an ideal addition to existing false positive detection tools and can be used to guide further pharmacological optimization after high throughput screening campaigns.
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Affiliation(s)
- Davide Boldini
- TUM
School of Natural Sciences, Department of Bioscience, Center for Functional
Protein Assemblies (CPA), Technical University
of Munich, 85748 Garching bei München, Germany
| | - Lukas Friedrich
- The
Healthcare business of Merck KGaA, 64293 Darmstadt, Germany
| | - Daniel Kuhn
- The
Healthcare business of Merck KGaA, 64293 Darmstadt, Germany
| | - Stephan A. Sieber
- TUM
School of Natural Sciences, Department of Bioscience, Center for Functional
Protein Assemblies (CPA), Technical University
of Munich, 85748 Garching bei München, Germany
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2
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Heyndrickx W, Mervin L, Morawietz T, Sturm N, Friedrich L, Zalewski A, Pentina A, Humbeck L, Oldenhof M, Niwayama R, Schmidtke P, Fechner N, Simm J, Arany A, Drizard N, Jabal R, Afanasyeva A, Loeb R, Verma S, Harnqvist S, Holmes M, Pejo B, Telenczuk M, Holway N, Dieckmann A, Rieke N, Zumsande F, Clevert DA, Krug M, Luscombe C, Green D, Ertl P, Antal P, Marcus D, Do Huu N, Fuji H, Pickett S, Acs G, Boniface E, Beck B, Sun Y, Gohier A, Rippmann F, Engkvist O, Göller AH, Moreau Y, Galtier MN, Schuffenhauer A, Ceulemans H. MELLODDY: Cross-pharma Federated Learning at Unprecedented Scale Unlocks Benefits in QSAR without Compromising Proprietary Information. J Chem Inf Model 2024; 64:2331-2344. [PMID: 37642660 PMCID: PMC11005050 DOI: 10.1021/acs.jcim.3c00799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Indexed: 08/31/2023]
Abstract
Federated multipartner machine learning has been touted as an appealing and efficient method to increase the effective training data volume and thereby the predictivity of models, particularly when the generation of training data is resource-intensive. In the landmark MELLODDY project, indeed, each of ten pharmaceutical companies realized aggregated improvements on its own classification or regression models through federated learning. To this end, they leveraged a novel implementation extending multitask learning across partners, on a platform audited for privacy and security. The experiments involved an unprecedented cross-pharma data set of 2.6+ billion confidential experimental activity data points, documenting 21+ million physical small molecules and 40+ thousand assays in on-target and secondary pharmacodynamics and pharmacokinetics. Appropriate complementary metrics were developed to evaluate the predictive performance in the federated setting. In addition to predictive performance increases in labeled space, the results point toward an extended applicability domain in federated learning. Increases in collective training data volume, including by means of auxiliary data resulting from single concentration high-throughput and imaging assays, continued to boost predictive performance, albeit with a saturating return. Markedly higher improvements were observed for the pharmacokinetics and safety panel assay-based task subsets.
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Affiliation(s)
| | - Lewis Mervin
- AstraZeneca
R&D, Biomedical Campus, 1 Francis Crick Ave, Cambridge CB2 0SL, U.K.
| | - Tobias Morawietz
- Bayer
Pharma
AG, Global Drug Discovery, Chemical Research,
Computational Chemistry, Aprather Weg 18 a, Wuppertal 42096, Germany
| | - Noé Sturm
- Novartis
Institutes for BioMedical Research, Novartis Campus, Basel 4002, Switzerland
| | - Lukas Friedrich
- Merck KGaA, Global Research & Development, Frankfurter Strasse 250, Darmstadt 64293, Germany
| | - Adam Zalewski
- Amgen Research
(Munich) GmbH, Staffelseestraße
2, Munich 81477, Germany
| | - Anastasia Pentina
- Bayer AG, Machine Learning Research, Research & Development,
Pharmaceuticals, Berlin 10117, Germany
| | - Lina Humbeck
- BI Medicinal
Chemistry Department, Boehringer Ingelheim
Pharma GmbH & Co. KG, Birkendorfer Str. 65, Biberach an der Riss 88397, Germany
| | - Martijn Oldenhof
- KU
Leuven, ESAT-STADIUS, Kasteelpark Arenberg 10, Heverlee 3001, Belgium
| | - Ritsuya Niwayama
- Institut
de recherches Servier, 125 chemin de ronde Croissy-sur-Seine, Île-de-France 78290, France
| | | | - Nikolas Fechner
- Novartis
Institutes for BioMedical Research, Novartis Campus, Basel 4002, Switzerland
| | - Jaak Simm
- KU
Leuven, ESAT-STADIUS, Kasteelpark Arenberg 10, Heverlee 3001, Belgium
| | - Adam Arany
- KU
Leuven, ESAT-STADIUS, Kasteelpark Arenberg 10, Heverlee 3001, Belgium
| | | | - Rama Jabal
- Iktos, 65 rue de Prony, Paris 75017, France
| | - Arina Afanasyeva
- Modality
Informatics Group, Digital Research Solutions, Advanced Informatics
& Analytics, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba-shi, Ibaraki 305-8585, Japan
| | - Regis Loeb
- KU
Leuven, ESAT-STADIUS, Kasteelpark Arenberg 10, Heverlee 3001, Belgium
| | - Shlok Verma
- GlaxoSmithKline, Computational Sciences, Gunnels Wood Road Stevenage, Herts SG1 2NY, U.K.
| | - Simon Harnqvist
- GlaxoSmithKline, Computational Sciences, Gunnels Wood Road Stevenage, Herts SG1 2NY, U.K.
| | - Matthew Holmes
- GlaxoSmithKline, Computational Sciences, Gunnels Wood Road Stevenage, Herts SG1 2NY, U.K.
| | - Balazs Pejo
- Budapest
University of Technology and Economics, Department of Networked Systems and Services, Műegyetem rkp. 3, Budapest 1111, Hungary
| | | | - Nicholas Holway
- Novartis
Institutes for BioMedical Research, Novartis Campus, Basel 4002, Switzerland
| | - Arne Dieckmann
- Bayer
AG, API Production, Product Supply, Pharmaceuticals, Ernst-Schering-Straße 14, Bergkamen 59192, Germany
| | - Nicola Rieke
- NVIDIA
GmbH, Floessergasse 2, Munich 81369, Germany
| | | | - Djork-Arné Clevert
- Bayer AG, Machine Learning Research, Research & Development,
Pharmaceuticals, Berlin 10117, Germany
| | - Michael Krug
- Merck KGaA, Global Research & Development, Frankfurter Strasse 250, Darmstadt 64293, Germany
| | - Christopher Luscombe
- GlaxoSmithKline, Computational Sciences, Gunnels Wood Road Stevenage, Herts SG1 2NY, U.K.
| | - Darren Green
- GlaxoSmithKline, Computational Sciences, Gunnels Wood Road Stevenage, Herts SG1 2NY, U.K.
| | - Peter Ertl
- Novartis
Institutes for BioMedical Research, Novartis Campus, Basel 4002, Switzerland
| | - Peter Antal
- Budapest
University of Technology and Economics, Department of Measurement and Information Systems, Műegyetem rkp. 3, Budapest 1111, Hungary
| | - David Marcus
- GlaxoSmithKline, Computational Sciences, Gunnels Wood Road Stevenage, Herts SG1 2NY, U.K.
| | | | - Hideyoshi Fuji
- Modality
Informatics Group, Digital Research Solutions, Advanced Informatics
& Analytics, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba-shi, Ibaraki 305-8585, Japan
| | - Stephen Pickett
- GlaxoSmithKline, Computational Sciences, Gunnels Wood Road Stevenage, Herts SG1 2NY, U.K.
| | - Gergely Acs
- Budapest
University of Technology and Economics, Department of Networked Systems and Services, Műegyetem rkp. 3, Budapest 1111, Hungary
| | - Eric Boniface
- Substra
Foundation - Labelia Labs, 4 rue Voltaire, Nantes 44000, France
| | - Bernd Beck
- BI Medicinal
Chemistry Department, Boehringer Ingelheim
Pharma GmbH & Co. KG, Birkendorfer Str. 65, Biberach an der Riss 88397, Germany
| | - Yax Sun
- Amgen
Research, 1 Amgen Center
Drive, Thousand Oaks, California 92130, United States
| | - Arnaud Gohier
- Institut
de recherches Servier, 125 chemin de ronde Croissy-sur-Seine, Île-de-France 78290, France
| | - Friedrich Rippmann
- Merck KGaA, Global Research & Development, Frankfurter Strasse 250, Darmstadt 64293, Germany
| | - Ola Engkvist
- AstraZeneca, Molecular AI, Discovery Sciences,
R&D, Pepparedsleden
1, Mölndal 431 50, Sweden
| | - Andreas H. Göller
- Bayer
Pharma
AG, Global Drug Discovery, Chemical Research,
Computational Chemistry, Aprather Weg 18 a, Wuppertal 42096, Germany
| | - Yves Moreau
- KU
Leuven, ESAT-STADIUS, Kasteelpark Arenberg 10, Heverlee 3001, Belgium
| | | | - Ansgar Schuffenhauer
- Novartis
Institutes for BioMedical Research, Novartis Campus, Basel 4002, Switzerland
| | - Hugo Ceulemans
- Janssen
Pharmaceutica NV, Turnhoutseweg 30, Beerse 2340, Belgium
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3
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Rusinko A, Rezaei M, Friedrich L, Buchstaller HP, Kuhn D, Ghogare A. AIDDISON: Empowering Drug Discovery with AI/ML and CADD Tools in a Secure, Web-Based SaaS Platform. J Chem Inf Model 2024; 64:3-8. [PMID: 38134123 PMCID: PMC10777390 DOI: 10.1021/acs.jcim.3c01016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 12/01/2023] [Accepted: 12/01/2023] [Indexed: 12/24/2023]
Abstract
The widespread proliferation of artificial intelligence (AI) and machine learning (ML) methods has a profound effect on the drug discovery process. However, many scientists are reluctant to utilize these powerful tools due to the steep learning curve typically associated with them. AIDDISON offers a convenient, secure, web-based platform for drug discovery, addressing the reluctance of scientists to adopt AI and ML methods due to the steep learning curve. By seamlessly integrating generative models, ADMET property predictions, searches in vast chemical spaces, and molecular docking, AIDDISON provides a sophisticated platform for modern drug discovery. It enables less computer-savvy scientists to utilize these powerful tools in their daily activities, as demonstrated by an example of identifying a valuable set of molecules for lead optimization. With AIDDISON, the benefits of AI/ML in drug discovery are accessible to all.
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Affiliation(s)
- Andrew Rusinko
- MilliporeSigma, 400 Summit Drive, Burlington, Massachusetts 01803, United States
| | - Mohammad Rezaei
- MilliporeSigma, 400 Summit Drive, Burlington, Massachusetts 01803, United States
| | - Lukas Friedrich
- Merck
Healthcare KGaA, Medicinal Chemistry and Drug Design, Darmstadt 64293, Germany
| | | | - Daniel Kuhn
- Merck
Healthcare KGaA, Medicinal Chemistry and Drug Design, Darmstadt 64293, Germany
| | - Ashwini Ghogare
- MilliporeSigma, 400 Summit Drive, Burlington, Massachusetts 01803, United States
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4
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Karras F, Bonsack M, Seifert S, Friedrich L, Kunz M. MEK inhibition induces expression of differentiation marker Keratin 10 in human keratinocytes. Pathol Res Pract 2023; 250:154788. [PMID: 37729782 DOI: 10.1016/j.prp.2023.154788] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/29/2023] [Accepted: 09/01/2023] [Indexed: 09/22/2023]
Abstract
BRAF mutant metastatic melanoma was regularly treated in the past with a BRAF inhibitor (BRAFi) alone or in combination with inhibitors of the mitogen-activated protein kinase kinase (MEKi), which is still a common treatment. This combination therapy strongly reduced the occurrence of keratoacanthomas and squamous cell carcinoma, which was frequently seen when BRAFi was used as monotherapy. Here we addressed the question whether MEK inhibition counteracts squamous cell carcinoma development in part by promoting keratinocyte differentiation. Exposure of human immortalized keratinocytes to different concentrations of MEKi revealed a significant increase in the expression of differentiation-associated keratins K10 and K1 as determined by qRT-PCR and immunofluorescence staining. Taken together, the present study suggests that in a combined treatment of melanoma with BRAFi/MEKi, MEKi reduces the incidence of squamous cell carcinomas by promoting keratinocyte differentiation under combined BRAFi/MEKi treatment in melanoma. This might open further treatment perspectives for skin cancer treatment.
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Affiliation(s)
- F Karras
- Department of Dermatology, Venereology and Allergology, University Medical Center Leipzig, 04103 Leipzig, Germany; Institute of Pathology, University Hospital Otto-von-Guericke University Magdeburg, 39120 Magdeburg, Germany.
| | - M Bonsack
- Department of Dermatology, Venereology and Allergology, University Medical Center Leipzig, 04103 Leipzig, Germany
| | - S Seifert
- Department of Dermatology, Venereology and Allergology, University Medical Center Leipzig, 04103 Leipzig, Germany
| | - L Friedrich
- Department of Dermatology, Venereology and Allergology, University Medical Center Leipzig, 04103 Leipzig, Germany
| | - M Kunz
- Department of Dermatology, Venereology and Allergology, University Medical Center Leipzig, 04103 Leipzig, Germany
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5
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Arras P, Yoo HB, Pekar L, Clarke T, Friedrich L, Schröter C, Schanz J, Tonillo J, Siegmund V, Doerner A, Krah S, Guarnera E, Zielonka S, Evers A. AI/ML combined with next-generation sequencing of VHH immune repertoires enables the rapid identification of de novo humanized and sequence-optimized single domain antibodies: a prospective case study. Front Mol Biosci 2023; 10:1249247. [PMID: 37842638 PMCID: PMC10575757 DOI: 10.3389/fmolb.2023.1249247] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 08/31/2023] [Indexed: 10/17/2023] Open
Abstract
Introduction: In this study, we demonstrate the feasibility of yeast surface display (YSD) and nextgeneration sequencing (NGS) in combination with artificial intelligence and machine learning methods (AI/ML) for the identification of de novo humanized single domain antibodies (sdAbs) with favorable early developability profiles. Methods: The display library was derived from a novel approach, in which VHH-based CDR3 regions obtained from a llama (Lama glama), immunized against NKp46, were grafted onto a humanized VHH backbone library that was diversified in CDR1 and CDR2. Following NGS analysis of sequence pools from two rounds of fluorescence-activated cell sorting we focused on four sequence clusters based on NGS frequency and enrichment analysis as well as in silico developability assessment. For each cluster, long short-term memory (LSTM) based deep generative models were trained and used for the in silico sampling of new sequences. Sequences were subjected to sequence- and structure-based in silico developability assessment to select a set of less than 10 sequences per cluster for production. Results: As demonstrated by binding kinetics and early developability assessment, this procedure represents a general strategy for the rapid and efficient design of potent and automatically humanized sdAb hits from screening selections with favorable early developability profiles.
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Affiliation(s)
- Paul Arras
- Antibody Discovery and Protein Engineering, Merck Healthcare KGaA, Darmstadt, Germany
- Institute for Organic Chemistry and Biochemistry, Technical University of Darmstadt, Darmstadt, Germany
| | - Han Byul Yoo
- Antibody Discovery and Protein Engineering, Merck Healthcare KGaA, Darmstadt, Germany
| | - Lukas Pekar
- Antibody Discovery and Protein Engineering, Merck Healthcare KGaA, Darmstadt, Germany
| | - Thomas Clarke
- Bioinformatics, EMD Serono, Billerica, MA, United States
| | - Lukas Friedrich
- Computational Chemistry and Biologics, Merck Healthcare KGaA, Darmstadt, Germany
| | | | - Jennifer Schanz
- ADCs & Targeted NBE Therapeutics, Merck KGaA, Darmstadt, Germany
| | - Jason Tonillo
- ADCs & Targeted NBE Therapeutics, Merck KGaA, Darmstadt, Germany
| | - Vanessa Siegmund
- Early Protein Supply and Characterization, Merck Healthcare KGaA, Darmstadt, Germany
| | - Achim Doerner
- Antibody Discovery and Protein Engineering, Merck Healthcare KGaA, Darmstadt, Germany
| | - Simon Krah
- Antibody Discovery and Protein Engineering, Merck Healthcare KGaA, Darmstadt, Germany
| | - Enrico Guarnera
- Antibody Discovery and Protein Engineering, Merck Healthcare KGaA, Darmstadt, Germany
| | - Stefan Zielonka
- Antibody Discovery and Protein Engineering, Merck Healthcare KGaA, Darmstadt, Germany
- Institute for Organic Chemistry and Biochemistry, Technical University of Darmstadt, Darmstadt, Germany
| | - Andreas Evers
- Antibody Discovery and Protein Engineering, Merck Healthcare KGaA, Darmstadt, Germany
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6
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Friedrich L, Park SK, Ballard P, Ho Baeurle TH, Maillard D, Bödding M, Keiser J, Marchant JS, Spangenberg T. Metabolism of (R)-Praziquantel versus the Activation of a Parasite Transient Receptor Potential Melastatin Ion Channel. ChemMedChem 2023; 18:e202300140. [PMID: 37272317 PMCID: PMC10530395 DOI: 10.1002/cmdc.202300140] [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: 03/10/2023] [Revised: 05/31/2023] [Accepted: 05/31/2023] [Indexed: 06/06/2023]
Abstract
Praziquantel (PZQ) is an essential anthelmintic drug recently established to be an activator of a Transient Receptor Potential Melastatin (TRPMPZQ ) ion channel in trematode worms. Bioinformatic, mutagenesis and drug metabolism work indicate that the cyclohexyl ring of PZQ is a key pharmacophore for activation of trematode TRPMPZQ , as well as serving as the primary site of oxidative metabolism which results in PZQ being a short-lived drug. Based on our recent findings, the hydrophobic cleft in schistosome TRPMPZQ defined by three hydrophobic residues surrounding the cyclohexyl ring has little tolerance for polarity. Here we evaluate the in vitro and in vivo activities of PZQ analogues with improved metabolic stability relative to the challenge of maintaining activity on the channel. Finally, an estimation of the respective contribution to the overall activity of both the parent and the main metabolite of PZQ in humans is reported.
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Affiliation(s)
- Lukas Friedrich
- Global Research & Development, Merck Healthcare KGaA, Frankfurter Str. 250, 64293, Darmstadt, Germany
| | - Sang-Kyu Park
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee WI, 53226, USA
| | | | | | - David Maillard
- Central Process Development-Downstream Processing Services, Merck Electronics KGaA, Frankfurter Str. 250, 64293, Darmstadt, Germany
| | - Matthias Bödding
- Merck Healthcare KGaA, Frankfurter Str. 250, 64293, Darmstadt, Germany
| | - Jennifer Keiser
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Kreuzstr. 2, 4123, Allschwil, Switzerland
- Helminth Drug Development Unit, University of Basel, Basel, Switzerland
| | - Jonathan S Marchant
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee WI, 53226, USA
| | - Thomas Spangenberg
- Global Health Institute of Merck, Ares Trading S.A., a subsidiary of Merck KGaA, Darmstadt Germany, 1262, Eysins, Switzerland
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7
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Stadler E, Maiga M, Friedrich L, Thathy V, Demarta-Gatsi C, Dara A, Sogore F, Striepen J, Oeuvray C, Djimdé AA, Lee MCS, Dembélé L, Fidock DA, Khoury DS, Spangenberg T. Author Correction: Propensity of selecting mutant parasites for the antimalarial drug cabamiquine. Nat Commun 2023; 14:5447. [PMID: 37673924 PMCID: PMC10482846 DOI: 10.1038/s41467-023-41287-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/08/2023] Open
Affiliation(s)
- Eva Stadler
- The Kirby Institute, UNSW Sydney, Kensington, NSW, 2052, Australia
| | - Mohamed Maiga
- Université des Sciences, des Techniques et des Technologies de Bamako (USTTB), Faculté de Pharmacie, Malaria Research and Training Center (MRTC), Point G, PB1805, Bamako, Mali
| | - Lukas Friedrich
- Medicinal Chemistry & Drug Design Global Research & Development, Discovery Technologies, Merck Healthcare, 64293, Darmstadt, Germany
| | - Vandana Thathy
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY, 10032, USA
- Center for Malaria Therapeutics and Antimicrobial Resistance, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Claudia Demarta-Gatsi
- Global Health Institute of Merck, Ares Trading S.A., (an affiliate of Merck KGaA, Darmstadt, Germany), 1262, Eysins, Switzerland
| | - Antoine Dara
- Université des Sciences, des Techniques et des Technologies de Bamako (USTTB), Faculté de Pharmacie, Malaria Research and Training Center (MRTC), Point G, PB1805, Bamako, Mali
| | - Fanta Sogore
- Université des Sciences, des Techniques et des Technologies de Bamako (USTTB), Faculté de Pharmacie, Malaria Research and Training Center (MRTC), Point G, PB1805, Bamako, Mali
| | - Josefine Striepen
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY, 10032, USA
- Weill Cornell Medical College, New York, NY, 10021, USA
| | - Claude Oeuvray
- Global Health Institute of Merck, Ares Trading S.A., (an affiliate of Merck KGaA, Darmstadt, Germany), 1262, Eysins, Switzerland
| | - Abdoulaye A Djimdé
- Université des Sciences, des Techniques et des Technologies de Bamako (USTTB), Faculté de Pharmacie, Malaria Research and Training Center (MRTC), Point G, PB1805, Bamako, Mali
| | - Marcus C S Lee
- Wellcome Sanger Institute, Wellcome Genome Campus, CB10 1SA, Hinxton, UK
- Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, DD1 4HN, Scotland, UK
| | - Laurent Dembélé
- Université des Sciences, des Techniques et des Technologies de Bamako (USTTB), Faculté de Pharmacie, Malaria Research and Training Center (MRTC), Point G, PB1805, Bamako, Mali.
| | - David A Fidock
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY, 10032, USA.
- Center for Malaria Therapeutics and Antimicrobial Resistance, Columbia University Irving Medical Center, New York, NY, 10032, USA.
- Division of Infectious Diseases, Department of Medicine, Columbia University Irving Medical Center, New York, NY, 10032, USA.
| | - David S Khoury
- The Kirby Institute, UNSW Sydney, Kensington, NSW, 2052, Australia.
| | - Thomas Spangenberg
- Global Health Institute of Merck, Ares Trading S.A., (an affiliate of Merck KGaA, Darmstadt, Germany), 1262, Eysins, Switzerland.
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8
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Boldini D, Grisoni F, Kuhn D, Friedrich L, Sieber SA. Practical guidelines for the use of gradient boosting for molecular property prediction. J Cheminform 2023; 15:73. [PMID: 37641120 PMCID: PMC10464382 DOI: 10.1186/s13321-023-00743-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 08/09/2023] [Indexed: 08/31/2023] Open
Abstract
Decision tree ensembles are among the most robust, high-performing and computationally efficient machine learning approaches for quantitative structure-activity relationship (QSAR) modeling. Among them, gradient boosting has recently garnered particular attention, for its performance in data science competitions, virtual screening campaigns, and bioactivity prediction. However, different variants of gradient boosting exist, the most popular being XGBoost, LightGBM and CatBoost. Our study provides the first comprehensive comparison of these approaches for QSAR. To this end, we trained 157,590 gradient boosting models, which were evaluated on 16 datasets and 94 endpoints, comprising 1.4 million compounds in total. Our results show that XGBoost generally achieves the best predictive performance, while LightGBM requires the least training time, especially for larger datasets. In terms of feature importance, the models surprisingly rank molecular features differently, reflecting differences in regularization techniques and decision tree structures. Thus, expert knowledge must always be employed when evaluating data-driven explanations of bioactivity. Furthermore, our results show that the relevance of each hyperparameter varies greatly across datasets and that it is crucial to optimize as many hyperparameters as possible to maximize the predictive performance. In conclusion, our study provides the first set of guidelines for cheminformatics practitioners to effectively train, optimize and evaluate gradient boosting models for virtual screening and QSAR applications.
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Affiliation(s)
- Davide Boldini
- Department of Bioscience, Center for Functional Protein Assemblies (CPA), Technical University of Munich, Garching bei Munich, Germany
| | - Francesca Grisoni
- Department of Biomedical Engineering, Institute for Complex Molecular Sciences, Eindhoven University of Technology, Eindhoven, The Netherlands
- Centre for Living Technologies, Alliance TU/E, WUR, UU, UMC Utrecht, Utrecht, The Netherlands
| | | | | | - Stephan A Sieber
- Department of Bioscience, Center for Functional Protein Assemblies (CPA), Technical University of Munich, Garching bei Munich, Germany.
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9
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Stadler E, Maiga M, Friedrich L, Thathy V, Demarta-Gatsi C, Dara A, Sogore F, Striepen J, Oeuvray C, Djimdé AA, Lee MCS, Dembélé L, Fidock DA, Khoury DS, Spangenberg T. Propensity of selecting mutant parasites for the antimalarial drug cabamiquine. Nat Commun 2023; 14:5205. [PMID: 37626093 PMCID: PMC10457284 DOI: 10.1038/s41467-023-40974-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 08/17/2023] [Indexed: 08/27/2023] Open
Abstract
We report an analysis of the propensity of the antimalarial agent cabamiquine, a Plasmodium-specific eukaryotic elongation factor 2 inhibitor, to select for resistant Plasmodium falciparum parasites. Through in vitro studies of laboratory strains and clinical isolates, a humanized mouse model, and volunteer infection studies, we identified resistance-associated mutations at 11 amino acid positions. Of these, six (55%) were present in more than one infection model, indicating translatability across models. Mathematical modelling suggested that resistant mutants were likely pre-existent at the time of drug exposure across studies. Here, we estimated a wide range of frequencies of resistant mutants across the different infection models, much of which can be attributed to stochastic differences resulting from experimental design choices. Structural modelling implicates binding of cabamiquine to a shallow mRNA binding site adjacent to two of the most frequently identified resistance mutations.
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Affiliation(s)
- Eva Stadler
- The Kirby Institute, UNSW Sydney, Kensington, NSW, 2052, Australia
| | - Mohamed Maiga
- Université des Sciences, des Techniques et des Technologies de Bamako (USTTB), Faculté de Pharmacie, Malaria Research and Training Center (MRTC), Point G, PB1805, Bamako, Mali
| | - Lukas Friedrich
- Medicinal Chemistry & Drug Design Global Research & Development, Discovery Technologies, Merck Healthcare, 64293, Darmstadt, Germany
| | - Vandana Thathy
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY, 10032, USA
- Center for Malaria Therapeutics and Antimicrobial Resistance, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Claudia Demarta-Gatsi
- Global Health Institute of Merck, Ares Trading S.A., (an affiliate of Merck KGaA, Darmstadt, Germany), 1262, Eysins, Switzerland
| | - Antoine Dara
- Université des Sciences, des Techniques et des Technologies de Bamako (USTTB), Faculté de Pharmacie, Malaria Research and Training Center (MRTC), Point G, PB1805, Bamako, Mali
| | - Fanta Sogore
- Université des Sciences, des Techniques et des Technologies de Bamako (USTTB), Faculté de Pharmacie, Malaria Research and Training Center (MRTC), Point G, PB1805, Bamako, Mali
| | - Josefine Striepen
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY, 10032, USA
- Weill Cornell Medical College, New York, NY, 10021, USA
| | - Claude Oeuvray
- Global Health Institute of Merck, Ares Trading S.A., (an affiliate of Merck KGaA, Darmstadt, Germany), 1262, Eysins, Switzerland
| | - Abdoulaye A Djimdé
- Université des Sciences, des Techniques et des Technologies de Bamako (USTTB), Faculté de Pharmacie, Malaria Research and Training Center (MRTC), Point G, PB1805, Bamako, Mali
| | - Marcus C S Lee
- Wellcome Sanger Institute, Wellcome Genome Campus, CB10 1SA, Hinxton, UK
- Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, DD1 4HN, Scotland, UK
| | - Laurent Dembélé
- Université des Sciences, des Techniques et des Technologies de Bamako (USTTB), Faculté de Pharmacie, Malaria Research and Training Center (MRTC), Point G, PB1805, Bamako, Mali.
| | - David A Fidock
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY, 10032, USA.
- Center for Malaria Therapeutics and Antimicrobial Resistance, Columbia University Irving Medical Center, New York, NY, 10032, USA.
- Division of Infectious Diseases, Department of Medicine, Columbia University Irving Medical Center, New York, NY, 10032, USA.
| | - David S Khoury
- The Kirby Institute, UNSW Sydney, Kensington, NSW, 2052, Australia.
| | - Thomas Spangenberg
- Global Health Institute of Merck, Ares Trading S.A., (an affiliate of Merck KGaA, Darmstadt, Germany), 1262, Eysins, Switzerland.
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Friedrich L, Winner E, Härtel H, Gumbert S, Zöls S, Ritzmann M, Beisl M, Kempf K, von Altrock A, Kemper N, Schulz J. Field trial: disinfection of contaminated anesthetic masks for piglets. Porcine Health Manag 2023; 9:25. [PMID: 37237411 DOI: 10.1186/s40813-023-00321-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
This paper aimed to assess the success of cleaning and disinfection on microbiological contamination of anesthetic masks, which were used for automated isoflurane anesthesia for surgical castration of male piglets. Data collection took place on 11 farms in Southern Germany between September 2020 and June 2022. Each farm was visited three times (one farm having two different anesthesia devices was visited six times), and microbiological assessments took place at four sample points (SP): after unpacking the masks (SP0), after disinfection before anesthesia (SP1), after anesthesia of all piglets to be castrated in this run (SP2), and after disinfection after anesthesia (SP3). The microbiological assessment included the determination of total bacteria count, total count of hemolytic and non-hemolytic mesophilic aerotolerant bacteria and a qualitative detection of indicator bacteria Escherichia (E.) coli, extended-spectrum beta-lactamase-producing E. coli (ESBL) and methicillin-resistant Staphylococcus aureus (MRSA). For analysis, a generalized linear mixed model was applied using farms and farm visits as random effects and sampling points nested in farm visits as fixed effect. The fixed effect was highly significant for all three variables (total bacteria count, total count of hemolytic and non-hemolytic mesophilic aerotolerant bacteria) (p < 0.001). The bacterial counts at SP0 were about the same as at SP3. Concerning indicator bacteria, their presence was highest at SP2 and lowest at SP3. No indicator bacteria were present at SP1. It can be concluded that disinfection of anesthetic masks, especially before performing anesthesia, may effectively protect piglets of the following batch against unwanted transmission of pathogens. These findings will help farmers plan cleaning and disinfection activities.
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Affiliation(s)
- L Friedrich
- Institute for Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173, Hannover, Germany
| | - E Winner
- Clinic for Swine at the Centre for Clinical Veterinary Medicine, LMU Munich, Sonnenstrasse 16, 85764, Oberschleissheim, Germany
| | - H Härtel
- Clinic for Swine at the Centre for Clinical Veterinary Medicine, LMU Munich, Sonnenstrasse 16, 85764, Oberschleissheim, Germany
| | - S Gumbert
- Clinic for Swine at the Centre for Clinical Veterinary Medicine, LMU Munich, Sonnenstrasse 16, 85764, Oberschleissheim, Germany
| | - S Zöls
- Clinic for Swine at the Centre for Clinical Veterinary Medicine, LMU Munich, Sonnenstrasse 16, 85764, Oberschleissheim, Germany
| | - M Ritzmann
- Clinic for Swine at the Centre for Clinical Veterinary Medicine, LMU Munich, Sonnenstrasse 16, 85764, Oberschleissheim, Germany
| | - M Beisl
- Clinic for Swine at the Centre for Clinical Veterinary Medicine, LMU Munich, Sonnenstrasse 16, 85764, Oberschleissheim, Germany
| | - K Kempf
- Institute for Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173, Hannover, Germany
| | - A von Altrock
- Clinic for Swine, Small Ruminants, Forensic Medicine and Ambulatory Service, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173, Hannover, Germany
| | - N Kemper
- Institute for Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173, Hannover, Germany
| | - J Schulz
- Institute for Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173, Hannover, Germany.
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11
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Boldini D, Friedrich L, Kuhn D, Sieber SA. Tuning gradient boosting for imbalanced bioassay modelling with custom loss functions. J Cheminform 2022; 14:80. [DOI: 10.1186/s13321-022-00657-w] [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: 09/02/2022] [Accepted: 10/30/2022] [Indexed: 11/12/2022] Open
Abstract
AbstractWhile in the last years there has been a dramatic increase in the number of available bioassay datasets, many of them suffer from extremely imbalanced distribution between active and inactive compounds. Thus, there is an urgent need for novel approaches to tackle class imbalance in drug discovery. Inspired by recent advances in computer vision, we investigated a panel of alternative loss functions for imbalanced classification in the context of Gradient Boosting and benchmarked them on six datasets from public and proprietary sources, for a total of 42 tasks and 2 million compounds. Our findings show that with these modifications, we achieve statistically significant improvements over the conventional cross-entropy loss function on five out of six datasets. Furthermore, by employing these bespoke loss functions we are able to push Gradient Boosting to match or outperform a wide variety of previously reported classifiers and neural networks. We also investigate the impact of changing the loss function on training time and find that it increases convergence speed up to 8 times faster. As such, these results show that tuning the loss function for Gradient Boosting is a straightforward and computationally efficient method to achieve state-of-the-art performance on imbalanced bioassay datasets without compromising on interpretability and scalability.
Graphical Abstract
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12
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Friedrich L, Kikuchi Y, Matsuda Y, Binder U, Skerra A. Efficient secretory production of proline/alanine/serine (PAS) biopolymers in Corynebacterium glutamicum yielding a monodisperse biological alternative to polyethylene glycol (PEG). Microb Cell Fact 2022; 21:227. [PMID: 36307781 PMCID: PMC9616612 DOI: 10.1186/s12934-022-01948-5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 10/12/2022] [Indexed: 11/10/2022] Open
Abstract
Background PAS biopolymers are recombinant polypeptides comprising the small uncharged l-amino acids Pro, Ala and/or Ser which resemble the widely used poly-ethylene glycol (PEG) in terms of pronounced hydrophilicity. Likewise, their random chain behaviour in physiological solution results in a strongly expanded hydrodynamic volume. Thus, apart from their use as fusion partner for biopharmaceuticals to achieve prolonged half-life in vivo, PAS biopolymers appear attractive as substitute for PEG—or other poorly degradable chemical polymers—in many areas. As a prerequisite for the wide application of PAS biopolymers at affordable cost, we have established their highly efficient biotechnological production in Corynebacterium glutamicum serving as a well characterized bacterial host organism. Results Using the CspA signal sequence, we have secreted two representative PAS biopolymers as polypeptides with ~ 600 and ~ 1200 amino acid residues, respectively. Both PAS biopolymers were purified from the culture supernatant by means of a simple downstream process in a truly monodisperse state as evidenced by ESI–MS. Yields after purification were up to ≥ 4 g per liter culture, with potential for further increase by strain optimization as well as fermentation and bioprocess development. Beyond direct application as hydrocolloids or to exploit their rheological properties, such PAS biopolymers are suitable for site-specific chemical conjugation with pharmacologically active molecules via their unique terminal amino or carboxyl groups. To enable the specific activation of the carboxylate, without interference by the free amino group, we generated a blocked N-terminus for the PAS(1200) polypeptide simply by introducing an N-terminal Gln residue which, after processing of the signal peptide, was cyclised to a chemically inert pyroglutamyl group upon acid treatment. The fact that PAS biopolymers are genetically encoded offers further conjugation strategies via incorporation of amino acids with reactive side chains (e.g., Cys, Lys, Glu/Asp) at defined positions. Conclusions Our new PAS expression platform using Corynex® technology opens the way to applications of PASylation® technology in multiple areas such as the pharmaceutical industry, cosmetics and food technology.
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Affiliation(s)
- L Friedrich
- XL-protein GmbH, Lise-Meitner-Strasse 30, 85354, Freising, Germany
| | - Y Kikuchi
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., 1-1 Suzuki-cho, Kawasaki-ku, Kawasaki, 210-8681, Japan
| | - Y Matsuda
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., 1-1 Suzuki-cho, Kawasaki-ku, Kawasaki, 210-8681, Japan
| | - U Binder
- XL-protein GmbH, Lise-Meitner-Strasse 30, 85354, Freising, Germany
| | - A Skerra
- XL-protein GmbH, Lise-Meitner-Strasse 30, 85354, Freising, Germany. .,Lehrstuhl für Biologische Chemie, Technische Universität München, Emil-Erlenmeyer-Forum 5, 85354, Freising, Germany.
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13
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Rambousek V, Friedrich L, Lang D, Horner A, Kaiser B, Lamprecht B. EP08.01-108 Real-Life Costs and Benefit of First-Line Pembrolizumab for Advanced NSCLC - A Propensity-Score Matched Case-Control Study. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.680] [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: 10/14/2022]
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14
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Ribárszki Á, Székely D, Szabó-Nótin B, Góczán B, Friedrich L, Nguyen Q, Máté M. Effect of ascorbic acid and acerola juice on some quality properties of aseptic filled apple juice. AAlim 2022. [DOI: 10.1556/066.2022.00030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Abstract
Quality and storability are crucial factors in production of apple juice. The main goal of this study was investigation of the effects of ascorbic acid and acerola juice on the changes of some sensorial parameters and bioactive compounds of aseptically filled and industrial scale produced apple juice during storage for 12 months. While the viscosity and pH of apple juice did not change significantly, the ΔE* peaked (20–30) at month 6 of the storage period. The colour of apple juice was lighter than at the beginning of storage. Maximum total phenolic contents were 1,100, 1,400, and 1,250 mg L−1 in the control, ascorbic acid supplemented, and acerola added samples, respectively. Other parameters (antioxidant capacity, ascorbic acid, browning index, etc.) peaked in month 4. Acerola was a good alternative anti-browning and antioxidant agent for the treatment of apple juice in the processing. The antioxidant capacity of apple juice treated with acerola was higher than with ascorbic acid. The results were obtained with industrial samples, thus, they can serve as a very good base for the optimisation process and industrial production without the need for scale-up.
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Affiliation(s)
- Á. Ribárszki
- Department of Fruit and Vegetables Processing Technology, Institute of Food Science and Technology, University of Agriculture and Life Sciences, Villányi út 29–43., Budapest H-1118, Hungary
| | - D. Székely
- Department of Fruit and Vegetables Processing Technology, Institute of Food Science and Technology, University of Agriculture and Life Sciences, Villányi út 29–43., Budapest H-1118, Hungary
| | - B. Szabó-Nótin
- Department of Fruit and Vegetables Processing Technology, Institute of Food Science and Technology, University of Agriculture and Life Sciences, Villányi út 29–43., Budapest H-1118, Hungary
| | - B. Góczán
- Department of Fruit and Vegetables Processing Technology, Institute of Food Science and Technology, University of Agriculture and Life Sciences, Villányi út 29–43., Budapest H-1118, Hungary
| | - L. Friedrich
- Department of Livestock and Food Preservation Technology, Institute of Food Science and Technology, University of Agriculture and Life Sciences, Ménesi út 45., Budapest H-1118, Hungary
| | - Q.D. Nguyen
- Department of Bioengineering and Alcoholic Drink Technology, Institute of Food Science and Technology, University of Agriculture and Life Sciences, Ménesi út 45., Budapest H-1118, Hungary
| | - M. Máté
- Department of Fruit and Vegetables Processing Technology, Institute of Food Science and Technology, University of Agriculture and Life Sciences, Villányi út 29–43., Budapest H-1118, Hungary
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15
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Park SK, Friedrich L, Yahya NA, Rohr CM, Chulkov EG, Maillard D, Rippmann F, Spangenberg T, Marchant JS. Mechanism of praziquantel action at a parasitic flatworm ion channel. Sci Transl Med 2021; 13:eabj5832. [PMID: 34936384 DOI: 10.1126/scitranslmed.abj5832] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Sang-Kyu Park
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee WI 53226, USA
| | - Lukas Friedrich
- Computational Chemistry and Biology, Global Research & Development, Discovery Technologies, Merck Healthcare, Frankfurter Str. 250, 64293 Darmstadt, Germany
| | - Nawal A Yahya
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee WI 53226, USA.,Department of Pharmacology, University of Minnesota Medical School, 312 Church Street, Minneapolis, MN 55455, USA
| | - Claudia M Rohr
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee WI 53226, USA
| | - Evgeny G Chulkov
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee WI 53226, USA
| | - David Maillard
- Central Process Development - Downstream Processing Services, Merck Performance Materials, Frankfurter Street 250, 64293 Darmstadt, Germany
| | - Friedrich Rippmann
- Computational Chemistry and Biology, Global Research & Development, Discovery Technologies, Merck Healthcare, Frankfurter Str. 250, 64293 Darmstadt, Germany
| | - Thomas Spangenberg
- Global Health Institute of Merck, Ares Trading S.A., a subsidiary of Merck KGaA, Darmstadt, Germany, 1262 Eysins, Switzerland
| | - Jonathan S Marchant
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee WI 53226, USA
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Friedrich L, Cingolani G, Ko Y, Iaselli M, Miciaccia M, Perrone MG, Neukirch K, Bobinger V, Merk D, Hofstetter RK, Werz O, Koeberle A, Scilimati A, Schneider G. Learning from Nature: From a Marine Natural Product to Synthetic Cyclooxygenase-1 Inhibitors by Automated De Novo Design. Adv Sci (Weinh) 2021; 8:e2100832. [PMID: 34176236 PMCID: PMC8373093 DOI: 10.1002/advs.202100832] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 05/16/2021] [Indexed: 05/03/2023]
Abstract
The repertoire of natural products offers tremendous opportunities for chemical biology and drug discovery. Natural product-inspired synthetic molecules represent an ecologically and economically sustainable alternative to the direct utilization of natural products. De novo design with machine intelligence bridges the gap between the worlds of bioactive natural products and synthetic molecules. On employing the compound Marinopyrrole A from marine Streptomyces as a design template, the algorithm constructs innovative small molecules that can be synthesized in three steps, following the computationally suggested synthesis route. Computational activity prediction reveals cyclooxygenase (COX) as a putative target of both Marinopyrrole A and the de novo designs. The molecular designs are experimentally confirmed as selective COX-1 inhibitors with nanomolar potency. X-ray structure analysis reveals the binding of the most selective compound to COX-1. This molecular design approach provides a blueprint for natural product-inspired hit and lead identification for drug discovery with machine intelligence.
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Affiliation(s)
- Lukas Friedrich
- Department of Chemistry and Applied BiosciencesETH ZurichVladimir‐Prelog‐Weg 4Zurich8093Switzerland
| | - Gino Cingolani
- Department of Biochemistry and Molecular BiologySidney Kimmel Cancer CenterThomas Jefferson University1020 Locust StreetPhiladelphiaPA19107USA
| | - Ying‐Hui Ko
- Department of Biochemistry and Molecular BiologySidney Kimmel Cancer CenterThomas Jefferson University1020 Locust StreetPhiladelphiaPA19107USA
| | - Mariaclara Iaselli
- Department of Pharmacy – Pharmaceutical SciencesUniversity of BariVia E. Orabona 4Bari70125Italy
| | - Morena Miciaccia
- Department of Pharmacy – Pharmaceutical SciencesUniversity of BariVia E. Orabona 4Bari70125Italy
| | - Maria Grazia Perrone
- Department of Pharmacy – Pharmaceutical SciencesUniversity of BariVia E. Orabona 4Bari70125Italy
| | - Konstantin Neukirch
- Michael Popp Institute and Center for Molecular Biosciences Innsbruck (CMBI)University of InnsbruckInnsbruck6020Austria
| | - Veronika Bobinger
- Department of Chemistry and Applied BiosciencesETH ZurichVladimir‐Prelog‐Weg 4Zurich8093Switzerland
| | - Daniel Merk
- Department of Chemistry and Applied BiosciencesETH ZurichVladimir‐Prelog‐Weg 4Zurich8093Switzerland
- Institute of Pharmaceutical ChemistryGoethe‐UniversityMax‐von‐Laue Straße 9Frankfurt am Main60438Germany
| | - Robert Klaus Hofstetter
- Department of Pharmaceutical/Medicinal ChemistryFriedrich‐Schiller‐University JenaPhilosophenweg 14Jena07743Germany
| | - Oliver Werz
- Department of Pharmaceutical/Medicinal ChemistryFriedrich‐Schiller‐University JenaPhilosophenweg 14Jena07743Germany
| | - Andreas Koeberle
- Michael Popp Institute and Center for Molecular Biosciences Innsbruck (CMBI)University of InnsbruckInnsbruck6020Austria
| | - Antonio Scilimati
- Department of Pharmacy – Pharmaceutical SciencesUniversity of BariVia E. Orabona 4Bari70125Italy
| | - Gisbert Schneider
- Department of Chemistry and Applied BiosciencesETH ZurichVladimir‐Prelog‐Weg 4Zurich8093Switzerland
- ETH Singapore SEC Ltd1 CREATE Way, #06‐01 CREATE TowerSingapore138602Singapore
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Csehi B, Salamon B, Csurka T, Szerdahelyi E, Friedrich L, Pásztor-Huszár K. Physicochemical and microbiological changes of bovine blood due to high hydrostatic pressure treatment. AAlim 2021. [DOI: 10.1556/066.2020.00325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
AbstractBovine blood samples were treated with high hydrostatic pressure (HHP) to examine the changes that may occur in the blood related to its colour, microbiological characteristics, protein denaturation, and dynamic viscosity. Pressure treatments were carried out from 100 to 600 MPa in 100 MPa scale up, with 5 min holding time. The blood samples were treated with anticoagulant (EDTA) to eliminate the possible measurement distorting effects. We found that 2 log reduction in the microbial load could be achieved with a pressure treatment above 400 MPa. According to the protein denaturation measurements (DSC), blood proteins were resistant to pressure treatment, even at 300–400 MPa a substantial part of proteins remained in native state. The colour of the samples got darker with the rising pressure, however, visible colour change was observed only above 400 MPa. It can be established, that the HHP treatment was suitable to increase the microbiological stability of blood, without significantly changing its techno-functional properties.
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Affiliation(s)
- B. Csehi
- Institute of Food Science and Technology, Hungarian University of Agriculture and Life Sciences, Villányi str. 29-43., H-1118 Budapest, Hungary
| | - B. Salamon
- Institute of Food Science and Technology, Hungarian University of Agriculture and Life Sciences, Villányi str. 29-43., H-1118 Budapest, Hungary
| | - T. Csurka
- Institute of Food Science and Technology, Hungarian University of Agriculture and Life Sciences, Villányi str. 29-43., H-1118 Budapest, Hungary
| | - E. Szerdahelyi
- Institute of Food Science and Technology, Hungarian University of Agriculture and Life Sciences, Villányi str. 29-43., H-1118 Budapest, Hungary
| | - L. Friedrich
- Institute of Food Science and Technology, Hungarian University of Agriculture and Life Sciences, Villányi str. 29-43., H-1118 Budapest, Hungary
| | - K. Pásztor-Huszár
- Institute of Food Science and Technology, Hungarian University of Agriculture and Life Sciences, Villányi str. 29-43., H-1118 Budapest, Hungary
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18
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Park SK, Friedrich L, Yahya N, Rohr C, Maillard D, Rippmann F, Spangenberg T, Marchant JS. Mechanism of Praziquantel Action at a Transient Receptor Potential Channel. Biophys J 2021. [DOI: 10.1016/j.bpj.2020.11.2107] [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: 11/28/2022] Open
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Friedrich L, Krieter J, Kemper N, Czycholl I. Interobserver reliability of measures of the Welfare Quality® animal welfare assessment protocol for sows and piglets. Anim Welf 2020. [DOI: 10.7120/09627286.29.3.323] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The aim of this study was to assess the interobserver reliability of the measures forming the Welfare Quality® animal welfare assessment protocol for sows and piglets. The study was carried out at nine farms in Northern Germany. Two trained observers evaluated identical
animals simultaneously but independently in 40 joint farm visits. Interobserver reliability was calculated at individual animal level using Cohen's kappa, weighted kappa and the prevalence-adjusted, bias-adjusted kappa (PABAK) and at farm level using Spearman's rank correlation coefficient
(RS), the intraclass correlation coefficient (ICC), smallest detectable change (SDC) and limits of agreement (LoA). While a direct comparison of the adjectives of the qualitative behaviour assessment showed poor interobserver reliability, a Principal Component Analysis detected good interobserver
reliability. The assessment of social and exploratory behaviours showed acceptable interobserver reliability, while the assessment of stereotypies displayed good interobserver reliability. The human-animal relationship test showed only poor interobserver reliability at individual animal and
farm levels. In most cases, measures of health and physical state assessed in sows and piglets exhibited acceptable or good interobserver reliability. In conclusion, after some measures are revised, particularly those examining the human-animal relationship, the Welfare Quality®
protocol for sows and piglets will represent a reliable approach in terms of interobserver reliability to assess the welfare of sows and piglets.
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Friedrich L, Byrne R, Treder A, Singh I, Bauer C, Gudermann T, Mederos Y Schnitzler M, Storch U, Schneider G. Shape Similarity by Fractal Dimensionality: An Application in the de novo Design of (-)-Englerin A Mimetics. ChemMedChem 2020; 15:566-570. [PMID: 32162837 DOI: 10.1002/cmdc.202000017] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/09/2020] [Indexed: 12/22/2022]
Abstract
Molecular shape and pharmacological function are interconnected. To capture shape, the fractal dimensionality concept was employed, providing a natural similarity measure for the virtual screening of de novo generated small molecules mimicking the structurally complex natural product (-)-englerin A. Two of the top-ranking designs were synthesized and tested for their ability to modulate transient receptor potential (TRP) cation channels which are cellular targets of (-)-englerin A. Intracellular calcium assays and electrophysiological whole-cell measurements of TRPC4 and TRPM8 channels revealed potent inhibitory effects of one of the computer-generated compounds. Four derivatives of this identified hit compound had comparable effects on TRPC4 and TRPM8. The results of this study corroborate the use of fractal dimensionality as an innovative shape-based molecular representation for molecular scaffold-hopping.
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Affiliation(s)
- Lukas Friedrich
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, 8093, Zurich, Switzerland
| | - Ryan Byrne
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, 8093, Zurich, Switzerland
| | - Aaron Treder
- Walther Straub Institute of Pharmacology and Toxicology, Ludwig Maximilians University of Munich, Goethestrasse 33, 80336, Munich, Germany
| | - Inderjeet Singh
- Walther Straub Institute of Pharmacology and Toxicology, Ludwig Maximilians University of Munich, Goethestrasse 33, 80336, Munich, Germany
| | - Christoph Bauer
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, 8093, Zurich, Switzerland
| | - Thomas Gudermann
- Walther Straub Institute of Pharmacology and Toxicology, Ludwig Maximilians University of Munich, Goethestrasse 33, 80336, Munich, Germany.,DZHK (German Centre for Cardiovascular Research), Munich Heart Alliance, Biedersteiner Strasse 29, 80802, Munich, Germany.,Comprehensive Pneumology Center Munich (CPC-M), German Center for Lung Research, Max-Lebsche-Platz 31, 81377, Munich, Germany
| | - Michael Mederos Y Schnitzler
- Walther Straub Institute of Pharmacology and Toxicology, Ludwig Maximilians University of Munich, Goethestrasse 33, 80336, Munich, Germany.,DZHK (German Centre for Cardiovascular Research), Munich Heart Alliance, Biedersteiner Strasse 29, 80802, Munich, Germany
| | - Ursula Storch
- Walther Straub Institute of Pharmacology and Toxicology, Ludwig Maximilians University of Munich, Goethestrasse 33, 80336, Munich, Germany.,Institute for Cardiovascular Prevention (IPEK), Ludwig Maximilians University of Munich, Pettenkoferstrasse 8a & 9, 80336, Munich, Germany
| | - Gisbert Schneider
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, 8093, Zurich, Switzerland
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Hussein K, Friedrich L, Pinter R, Németh C, Kiskó G, Dalmadi I. Effect of linalool and piperine on chicken meat quality during refrigerated conditions. Acta Alimentaria 2019. [DOI: 10.1556/066.2019.48.4.4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- K.N. Hussein
- Department of Refrigeration and Livestock Products Technology, Faculty of Food Science, Szent István University, H-1118 Budapest, Ménesi út 43–15. Hungary
- Department of Animal Production, College of Agriculture, University of Duhok, Zakho Street 38, 42001 Duhok, Kurdistan Region. Iraq
| | - L. Friedrich
- Department of Refrigeration and Livestock Products Technology, Faculty of Food Science, Szent István University, H-1118 Budapest, Ménesi út 43–15. Hungary
| | - R. Pinter
- Department of Refrigeration and Livestock Products Technology, Faculty of Food Science, Szent István University, H-1118 Budapest, Ménesi út 43–15. Hungary
| | - Cs. Németh
- Capriovus Ltd., H-2307 Szigetcsép, Dunasor 073/72 hrsz. Hungary
| | - G. Kiskó
- Department of Microbiology and Biotechnology, Faculty of Food Science, Szent István University, H-1118 Budapest, Somlói út 14–16. Hungary
| | - I. Dalmadi
- Department of Refrigeration and Livestock Products Technology, Faculty of Food Science, Szent István University, H-1118 Budapest, Ménesi út 43–15. Hungary
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22
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Debon A, Pott M, Obexer R, Green AP, Friedrich L, Griffiths AD, Hilvert D. Ultrahigh-throughput screening enables efficient single-round oxidase remodelling. Nat Catal 2019. [DOI: 10.1038/s41929-019-0340-5] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [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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Grisoni F, Merk D, Friedrich L, Schneider G. Design of Natural-Product-Inspired Multitarget Ligands by Machine Learning. ChemMedChem 2019; 14:1129-1134. [PMID: 30973672 DOI: 10.1002/cmdc.201900097] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [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: 02/15/2019] [Revised: 04/02/2019] [Indexed: 11/08/2022]
Abstract
A virtual screening protocol based on machine learning models was used to identify mimetics of the natural product (-)-galantamine. This fully automated approach identified eight compounds with bioactivities on at least one of the macromolecular targets of (-)-galantamine, with different polypharmacological profiles. Two of the computer-generated hits possess an expanded spectrum of bioactivity on targets relevant to the treatment of Alzheimer's disease and are suitable for hit-to-lead expansion. These results advocate multitarget drug design by advanced virtual screening protocols based on chemically informed machine learning models.
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Affiliation(s)
- Francesca Grisoni
- Department of Chemistry and Applied Biosciences, RETHINK, ETH Zurich, Vladimir-Prelog-Weg 4, 8093, Zurich, Switzerland
| | - Daniel Merk
- Department of Chemistry and Applied Biosciences, RETHINK, ETH Zurich, Vladimir-Prelog-Weg 4, 8093, Zurich, Switzerland
| | - Lukas Friedrich
- Department of Chemistry and Applied Biosciences, RETHINK, ETH Zurich, Vladimir-Prelog-Weg 4, 8093, Zurich, Switzerland
| | - Gisbert Schneider
- Department of Chemistry and Applied Biosciences, RETHINK, ETH Zurich, Vladimir-Prelog-Weg 4, 8093, Zurich, Switzerland
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Merk D, Grisoni F, Schaller K, Friedrich L, Schneider G. Discovery of Novel Molecular Frameworks of Farnesoid X Receptor Modulators by Ensemble Machine Learning. ChemistryOpen 2019; 8:7-14. [PMID: 30622878 PMCID: PMC6317935 DOI: 10.1002/open.201800156] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Indexed: 11/23/2022] Open
Abstract
The bile acid activated transcription factor farnesoid X receptor (FXR) has revealed therapeutic potential as a molecular drug target for the treatment of hepatic and metabolic disorders. Despite strong efforts in FXR ligand development, the structural diversity among the known FXR modulators is limited. Only four molecular frameworks account for more than 50 % of the FXR modulators annotated in ChEMBL. Here, we leverage machine learning methods to expand the chemical space of FXR-targeting small molecules by employing an ensemble of three complementary machine learning approaches. A counter-propagation artificial neural network, a k-nearest neighbor learner, and a three-dimensional pharmacophore descriptor were combined to retrieve novel FXR ligands from a collection of more than 3 million compounds. The ensemble machine learning model identified six new FXR modulators among ten top-ranked candidates. These active hits comprise both FXR activators and antagonists with micromolar potencies. With four novel FXR ligand scaffolds, these computationally identified bioactive compounds appreciably expand the chemical space of known FXR modulators and may serve as starting points for hit-to-lead expansion.
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Affiliation(s)
- Daniel Merk
- Department of Chemistry and Applied BiosciencesSwiss Federal Institute of Technology (ETH) ZurichVladimir-Prelog-Weg 48093ZurichSwitzerland
| | - Francesca Grisoni
- Department of Chemistry and Applied BiosciencesSwiss Federal Institute of Technology (ETH) ZurichVladimir-Prelog-Weg 48093ZurichSwitzerland
- Department of Earth and Environmental SciencesUniversity of Milano-BicoccaPiazza della Scienza 120126MilanoItaly
| | - Kay Schaller
- Department of Chemistry and Applied BiosciencesSwiss Federal Institute of Technology (ETH) ZurichVladimir-Prelog-Weg 48093ZurichSwitzerland
| | - Lukas Friedrich
- Department of Chemistry and Applied BiosciencesSwiss Federal Institute of Technology (ETH) ZurichVladimir-Prelog-Weg 48093ZurichSwitzerland
| | - Gisbert Schneider
- Department of Chemistry and Applied BiosciencesSwiss Federal Institute of Technology (ETH) ZurichVladimir-Prelog-Weg 48093ZurichSwitzerland
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Merk D, Grisoni F, Schaller K, Friedrich L, Schneider G. Discovery of Novel Molecular Frameworks of Farnesoid X Receptor Modulators by Ensemble Machine Learning. ChemistryOpen 2019; 8:3. [PMID: 30622876 PMCID: PMC6317921 DOI: 10.1002/open.201800270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Invited for this month's cover picture is the group of Prof. Dr. Gisbert Schneider from the Swiss Federal Institute of Technology (ETH) Zurich (Switzerland). The cover picture illustrates the application of machine-learning methods to expand the chemical space of farnesoid X receptor (FXR)-targeting small molecules, by employing an ensemble of three complementary machine-learning approaches (counter-propagation artificial neural network, k-nearest neighbor learner, and three-dimensional pharmacophore model). Read the full text of their Full Paper at 10.1002/open.201800156.
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Affiliation(s)
- Daniel Merk
- Department of Chemistry and Applied BiosciencesSwiss Federal Institute of Technology (ETH) ZurichVladimir-Prelog-Weg 48093ZurichSwitzerland
| | - Francesca Grisoni
- Department of Chemistry and Applied BiosciencesSwiss Federal Institute of Technology (ETH) ZurichVladimir-Prelog-Weg 48093ZurichSwitzerland
- Department of Earth and Environmental SciencesUniversity of Milano-BicoccaPiazza della Scienza 120126MilanoItaly
| | - Kay Schaller
- Department of Chemistry and Applied BiosciencesSwiss Federal Institute of Technology (ETH) ZurichVladimir-Prelog-Weg 48093ZurichSwitzerland
| | - Lukas Friedrich
- Department of Chemistry and Applied BiosciencesSwiss Federal Institute of Technology (ETH) ZurichVladimir-Prelog-Weg 48093ZurichSwitzerland
| | - Gisbert Schneider
- Department of Chemistry and Applied BiosciencesSwiss Federal Institute of Technology (ETH) ZurichVladimir-Prelog-Weg 48093ZurichSwitzerland
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Merk D, Grisoni F, Schaller K, Friedrich L, Schneider G. Front Cover: Discovery of Novel Molecular Frameworks of Farnesoid X Receptor Modulators by Ensemble Machine Learning (ChemistryOpen 1/2019). ChemistryOpen 2018. [PMCID: PMC6319610 DOI: 10.1002/open.201800271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
The Front Cover shows the application of machine‐learning methods to expand the chemical space of farnesoid X receptor (FXR)‐targeting small molecules, by employing an ensemble of three complementary machine‐learning approaches (counter‐propagation artificial neural network, k‐nearest neighbor learner, and three‐dimensional pharmacophore model). The ensemble machine‐learning model identified six new FXR modulators from a library of 3 million compounds. These computationally identified bioactive compounds possess four novel scaffolds and appreciably expand the chemical space of known FXR modulators. More information can be found in the Full Paper by D. Merk et al. on page 7 in Issue 1, 2019 (DOI: 10.1002/open.201800156).![]()
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Affiliation(s)
- Daniel Merk
- Department of Chemistry and Applied Biosciences; Swiss Federal Institute of Technology (ETH) Zurich; Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Francesca Grisoni
- Department of Chemistry and Applied Biosciences; Swiss Federal Institute of Technology (ETH) Zurich; Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
- Department of Earth and Environmental Sciences; University of Milano-Bicocca; Piazza della Scienza 1 20126 Milano Italy
| | - Kay Schaller
- Department of Chemistry and Applied Biosciences; Swiss Federal Institute of Technology (ETH) Zurich; Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Lukas Friedrich
- Department of Chemistry and Applied Biosciences; Swiss Federal Institute of Technology (ETH) Zurich; Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Gisbert Schneider
- Department of Chemistry and Applied Biosciences; Swiss Federal Institute of Technology (ETH) Zurich; Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
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Merk D, Grisoni F, Friedrich L, Schneider G. Tuning artificial intelligence on the de novo design of natural-product-inspired retinoid X receptor modulators. Commun Chem 2018. [DOI: 10.1038/s42004-018-0068-1] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Merk D, Grisoni F, Friedrich L, Gelzinyte E, Schneider G. Scaffold hopping from synthetic RXR modulators by virtual screening and de novo design. Medchemcomm 2018; 9:1289-1292. [PMID: 30151082 PMCID: PMC6096356 DOI: 10.1039/c8md00134k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Accepted: 04/15/2018] [Indexed: 01/03/2023]
Abstract
The lack of potent subtype-selective modulators of retinoid X receptors (RXRs) has hindered their full exploitation as promising drug targets. Using computational similarity searching, target prediction and automated de novo design, we identified novel RXR ligands exhibiting innovative molecular frameworks, pronounced receptor-subtype preference and suitable properties for hit-to-lead expansion.
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Affiliation(s)
- Daniel Merk
- Department of Chemistry and Applied Biosciences , Swiss Federal Institute of Technology (ETH) , Vladimir-Prelog-Weg 4 , CH-8093 Zurich , Switzerland .
| | - Francesca Grisoni
- Department of Chemistry and Applied Biosciences , Swiss Federal Institute of Technology (ETH) , Vladimir-Prelog-Weg 4 , CH-8093 Zurich , Switzerland .
- Department of Earth and Environmental Sciences , University of Milano-Bicocca , P.za della Scienza, 1 , IT-20126 Milan , Italy
| | - Lukas Friedrich
- Department of Chemistry and Applied Biosciences , Swiss Federal Institute of Technology (ETH) , Vladimir-Prelog-Weg 4 , CH-8093 Zurich , Switzerland .
| | - Elena Gelzinyte
- Department of Chemistry and Applied Biosciences , Swiss Federal Institute of Technology (ETH) , Vladimir-Prelog-Weg 4 , CH-8093 Zurich , Switzerland .
| | - Gisbert Schneider
- Department of Chemistry and Applied Biosciences , Swiss Federal Institute of Technology (ETH) , Vladimir-Prelog-Weg 4 , CH-8093 Zurich , Switzerland .
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Popovici J, Friedrich L, Kim S, Bin S, Run V, Serre D, Menard D. Frequent and complex relapses confound assessment of chloroquine resistance in Cambodian Plasmodium vivax. Int J Infect Dis 2018. [DOI: 10.1016/j.ijid.2018.04.3596] [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: 10/28/2022] Open
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Merk D, Grisoni F, Friedrich L, Gelzinyte E, Schneider G. Computer-Assisted Discovery of Retinoid X Receptor Modulating Natural Products and Isofunctional Mimetics. J Med Chem 2018; 61:5442-5447. [DOI: 10.1021/acs.jmedchem.8b00494] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Daniel Merk
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, CH-8093 Zurich, Switzerland
| | - Francesca Grisoni
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, CH-8093 Zurich, Switzerland
- Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza, 1, IT-20126 Milan, Italy
| | - Lukas Friedrich
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, CH-8093 Zurich, Switzerland
| | - Elena Gelzinyte
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, CH-8093 Zurich, Switzerland
| | - Gisbert Schneider
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Vladimir-Prelog-Weg 4, CH-8093 Zurich, Switzerland
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Nepozitek J, Dostalova S, Kemlink D, Friedrich L, Dall’Antonia I, Prihodova I, Ibarburu V, Sonka K. 0683 Fragmentary Myoclonus In Idiopathic Rapid Eye Movement Sleep Behavior Disorder. Sleep 2018. [DOI: 10.1093/sleep/zsy061.682] [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: 11/13/2022] Open
Affiliation(s)
- J Nepozitek
- Department of Neurology and Center of Clinical Neuroscience, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, CZECH REPUBLIC
| | - S Dostalova
- Department of Neurology and Center of Clinical Neuroscience, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, CZECH REPUBLIC
| | - D Kemlink
- Department of Neurology and Center of Clinical Neuroscience, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, CZECH REPUBLIC
| | - L Friedrich
- Department of Neurology and Center of Clinical Neuroscience, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, CZECH REPUBLIC
- University Department of Neurology, Sveti Duh University Hospital, Zagreb, CROATIA
| | - I Dall’Antonia
- Department of Neurology and Center of Clinical Neuroscience, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, CZECH REPUBLIC
| | - I Prihodova
- Department of Neurology and Center of Clinical Neuroscience, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, CZECH REPUBLIC
| | - V Ibarburu
- Department of Neurology and Center of Clinical Neuroscience, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, CZECH REPUBLIC
| | - K Sonka
- Department of Neurology and Center of Clinical Neuroscience, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, CZECH REPUBLIC
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Abstract
Generative artificial intelligence offers a fresh view on molecular design. We present the first-time prospective application of a deep learning model for designing new druglike compounds with desired activities. For this purpose, we trained a recurrent neural network to capture the constitution of a large set of known bioactive compounds represented as SMILES strings. By transfer learning, this general model was fine-tuned on recognizing retinoid X and peroxisome proliferator-activated receptor agonists. We synthesized five top-ranking compounds designed by the generative model. Four of the compounds revealed nanomolar to low-micromolar receptor modulatory activity in cell-based assays. Apparently, the computational model intrinsically captured relevant chemical and biological knowledge without the need for explicit rules. The results of this study advocate generative artificial intelligence for prospective de novo molecular design, and demonstrate the potential of these methods for future medicinal chemistry.
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Affiliation(s)
- Daniel Merk
- Department of Chemistry and Applied BiosciencesSwiss Federal Institute of Technology (ETH)Vladimir-Prelog-Weg 4, CH-8093ZurichSwitzerland
| | - Lukas Friedrich
- Department of Chemistry and Applied BiosciencesSwiss Federal Institute of Technology (ETH)Vladimir-Prelog-Weg 4, CH-8093ZurichSwitzerland
| | - Francesca Grisoni
- Department of Chemistry and Applied BiosciencesSwiss Federal Institute of Technology (ETH)Vladimir-Prelog-Weg 4, CH-8093ZurichSwitzerland
- Department of Earth and Environmental SciencesUniversity of Milano-BicoccaP.za della Scienza, 1, IT-20126MilanItaly
| | - Gisbert Schneider
- Department of Chemistry and Applied BiosciencesSwiss Federal Institute of Technology (ETH)Vladimir-Prelog-Weg 4, CH-8093ZurichSwitzerland
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Nepožitek J, Dostálová S, Kemlink D, Friedrich L, Příhodová I, Ibarburu V, Šonka K. Fragmentary myoclonus in idiopathic rapid eye movement sleep behavior disorder. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.697] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Darnay L, Tóth A, Salamon B, Papik K, Oros G, Jónás G, Horti K, Koncz K, Friedrich L. Texture-modifying properties of microbial transglutaminase on 2 popular Hungarian products: Trappist cheese and frankfurter. Acta Alimentaria 2017. [DOI: 10.1556/066.2017.46.1.15] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Salamon B, Tóth A, Palotás P, Südi G, Csehi B, Németh C, Friedrich L. Effect of high hydrostatic pressure (HHP) processing on organoleptic properties and shelf life of fish salad with mayonnaise. Acta Alimentaria 2016. [DOI: 10.1556/066.2016.45.4.13] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Csehi B, Szerdahelyi E, Pásztor-Huszár K, Salamon B, Tóth A, Zeke I, Jónás G, Friedrich L. Changes of protein profiles in pork and beef meat caused by high hydrostatic pressure treatment. Acta Alimentaria 2016. [DOI: 10.1556/066.2016.45.4.14] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Grisoni F, Reker D, Schneider P, Friedrich L, Consonni V, Todeschini R, Koeberle A, Werz O, Schneider G. Matrix-based Molecular Descriptors for Prospective Virtual Compound Screening. Mol Inform 2016; 36. [DOI: 10.1002/minf.201600091] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 09/07/2016] [Indexed: 01/19/2023]
Affiliation(s)
- Francesca Grisoni
- University of Milano-Bicocca; Dept. of Earth and Environmental Sciences; P.za della Scienza 1 20126 Milano Italy
- Swiss Federal Institute of Technology (ETH); Department of Chemistry and Applied Biosciences; Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Daniel Reker
- Swiss Federal Institute of Technology (ETH); Department of Chemistry and Applied Biosciences; Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Petra Schneider
- Swiss Federal Institute of Technology (ETH); Department of Chemistry and Applied Biosciences; Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
- inSili.com LLC; Segantinisteig 3 8049 Zurich Switzerland
| | - Lukas Friedrich
- Swiss Federal Institute of Technology (ETH); Department of Chemistry and Applied Biosciences; Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Viviana Consonni
- University of Milano-Bicocca; Dept. of Earth and Environmental Sciences; P.za della Scienza 1 20126 Milano Italy
| | - Roberto Todeschini
- University of Milano-Bicocca; Dept. of Earth and Environmental Sciences; P.za della Scienza 1 20126 Milano Italy
| | - Andreas Koeberle
- University of Jena; Institute of Pharmacy; Philosophenweg 14 07743 Jena Germany
| | - Oliver Werz
- University of Jena; Institute of Pharmacy; Philosophenweg 14 07743 Jena Germany
| | - Gisbert Schneider
- Swiss Federal Institute of Technology (ETH); Department of Chemistry and Applied Biosciences; Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
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Friedrich L, Rodrigues T, Neuhaus CS, Schneider P, Schneider G. From Complex Natural Products to Simple Synthetic Mimetics by Computational De Novo Design. Angew Chem Int Ed Engl 2016; 55:6789-92. [DOI: 10.1002/anie.201601941] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 04/03/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Lukas Friedrich
- Department of Chemistry and Applied Biosciences; Swiss Federal Institute of Technology (ETH); Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Tiago Rodrigues
- Department of Chemistry and Applied Biosciences; Swiss Federal Institute of Technology (ETH); Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Claudia S. Neuhaus
- Department of Chemistry and Applied Biosciences; Swiss Federal Institute of Technology (ETH); Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Petra Schneider
- Department of Chemistry and Applied Biosciences; Swiss Federal Institute of Technology (ETH); Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
- inSili.com GmbH; Segantinisteig 3 8049 Zurich Switzerland
| | - Gisbert Schneider
- Department of Chemistry and Applied Biosciences; Swiss Federal Institute of Technology (ETH); Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
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Friedrich L, Rodrigues T, Neuhaus CS, Schneider P, Schneider G. Von komplexen Naturstoffen zu synthetisch leicht zugänglichen Mimetika mithilfe von computergestütztem De-novo-Design. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601941] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lukas Friedrich
- Department für Chemie und Angewandte Biowissenschaften; Eidgenössische Technische Hochschule; Vladimir-Prelog-Weg 4 8093 Zürich Schweiz
| | - Tiago Rodrigues
- Department für Chemie und Angewandte Biowissenschaften; Eidgenössische Technische Hochschule; Vladimir-Prelog-Weg 4 8093 Zürich Schweiz
| | - Claudia S. Neuhaus
- Department für Chemie und Angewandte Biowissenschaften; Eidgenössische Technische Hochschule; Vladimir-Prelog-Weg 4 8093 Zürich Schweiz
| | - Petra Schneider
- Department für Chemie und Angewandte Biowissenschaften; Eidgenössische Technische Hochschule; Vladimir-Prelog-Weg 4 8093 Zürich Schweiz
- inSili.com GmbH; Segantinisteig 3 8049 Zürich Schweiz
| | - Gisbert Schneider
- Department für Chemie und Angewandte Biowissenschaften; Eidgenössische Technische Hochschule; Vladimir-Prelog-Weg 4 8093 Zürich Schweiz
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Sommer W, Ius F, Friedrich L, Tudorache I, Kuehn C, Avsar M, Salman J, Siemeni T, Greer M, Haverich A, Warnecke G. Impact of Multi-Drug Resistant Bacteria Detected De Novo Early after Lung Transplantation on Morbidity and Mortality. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.470] [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: 10/22/2022] Open
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Darnay L, Dankovics A, Molnár B, Friedrich L, Kenesei G, Balla C. Producion of low salt frankfurter with microbial transglutaminase. Acta Alimentaria 2014. [DOI: 10.1556/aalim.43.2014.suppl.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Friedrich L, Madrid C, Odman-Jaques M, Yersin B, Carnon PN. [Complications of body piercing]. Rev Med Suisse 2014; 10:662-668. [PMID: 24734366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The trend of body piercing has grown in popularity in the past decade within the general population and especially among young adults. Complications of body piercing include local inflammation and infections, but severe complications are also possible and largely underestimated. People are usually not aware of the risks before making a piercing, and their medical history, medication and comorbidities are largely neglected by the people who realise the piercing. This article presents a review of the complications that a primary care physician may observe, for a patient who wishes to make a piercing, or presents complications due to the implementation of such a device.
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Friedrich L. Brandschutz als Maßnahme zur Restrisiko-Minimierung. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201250248] [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: 11/07/2022]
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Friedrich L, Tuboly E, Pásztor-Huszár K, Balla C, Vén C. Non-destructive measurement of outer crust formation in dry sausage using ultrasound technique. Acta Alimentaria 2012. [DOI: 10.1556/aalim.41.2012.2.2] [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] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Ramackers W, Friedrich L, Tiede A, Schuettler W, Bergmann S, Broecker V, Schwinzer R, Winkler M. Coagulation in xenotransplantation. Xenotransplantation 2011. [DOI: 10.1111/j.1399-3089.2010.00607_10.x] [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: 11/28/2022]
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47
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Delaney TP, Uknes S, Vernooij B, Friedrich L, Weymann K, Negrotto D, Gaffney T, Gut-Rella M, Kessmann H, Ward E, Ryals J. A central role of salicylic Acid in plant disease resistance. Science 2010; 266:1247-50. [PMID: 17810266 DOI: 10.1126/science.266.5188.1247] [Citation(s) in RCA: 874] [Impact Index Per Article: 62.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Transgenic tobacco and Arabidopsis thaliana expressing the bacterial enzyme salicylate hydroxylase cannot accumulate salicylic acid (SA). This defect not only makes the plants unable to induce systemic acquired resistance, but also leads to increased susceptibility to viral, fungal, and bacterial pathogens. The enhanced susceptibility extends even to host-pathogen combinations that would normally result in genetic resistance. Therefore, SA accumulation is essential for expression of multiple modes of plant disease resistance.
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Gaffney T, Friedrich L, Vernooij B, Negrotto D, Nye G, Uknes S, Ward E, Kessmann H, Ryals J. Requirement of salicylic Acid for the induction of systemic acquired resistance. Science 2010; 261:754-6. [PMID: 17757215 DOI: 10.1126/science.261.5122.754] [Citation(s) in RCA: 853] [Impact Index Per Article: 60.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
It has been proposed that salicylic acid acts as an endogenous signal responsible for inducing systemic acquired resistance in plants. The contribution of salicylic acid to systemic acquired resistance was investigated in transgenic tobacco plants harboring a bacterial gene encoding salicylate hydroxylase, which converts salicylic acid to catechol. Transgenic plants that express salicylate hydroxylase accumulated little or no salicylic acid and were defective in their ability to induce acquired resistance against tobacco mosaic virus. Thus, salicylic acid is essential for the development of systemic acquired resistance in tobacco.
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Ramackers W, Friedrich L, Tiede A, Schuettler W, Bergmann S, Broecker V, Schwinzer R, Winkler M. Coagulation in xenotransplantation. Xenotransplantation 2008. [DOI: 10.1111/j.1399-3089.2008.00488_11.x] [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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Petersen B, Ramackers W, Lucas-Hahn A, Herrmann D, Kues W, Friedrich L, Bergmann S, Schuettler W, Baars W, Carnwath J, Schwinzer R, Winkler M, Niemann H. Production and characterization of pigs transgenic for human hemeoxygenase-I by somatic nuclear transfer. Xenotransplantation 2008. [DOI: 10.1111/j.1399-3089.2008.00488_9.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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