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Quaglia F, Chasapi A, Nugnes MV, Aspromonte MC, Leonardi E, Piovesan D, Tosatto SCE. Best practices for the manual curation of intrinsically disordered proteins in DisProt. Database (Oxford) 2024; 2024:baae009. [PMID: 38507044 PMCID: PMC10953794 DOI: 10.1093/database/baae009] [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: 10/19/2023] [Revised: 12/18/2023] [Accepted: 02/03/2024] [Indexed: 03/22/2024]
Abstract
The DisProt database is a resource containing manually curated data on experimentally validated intrinsically disordered proteins (IDPs) and intrinsically disordered regions (IDRs) from the literature. Developed in 2005, its primary goal was to collect structural and functional information into proteins that lack a fixed three-dimensional structure. Today, DisProt has evolved into a major repository that not only collects experimental data but also contributes to our understanding of the IDPs/IDRs roles in various biological processes, such as autophagy or the life cycle mechanisms in viruses or their involvement in diseases (such as cancer and neurodevelopmental disorders). DisProt offers detailed information on the structural states of IDPs/IDRs, including state transitions, interactions and their functions, all provided as curated annotations. One of the central activities of DisProt is the meticulous curation of experimental data from the literature. For this reason, to ensure that every expert and volunteer curator possesses the requisite knowledge for data evaluation, collection and integration, training courses and curation materials are available. However, biocuration guidelines concur on the importance of developing robust guidelines that not only provide critical information about data consistency but also ensure data acquisition.This guideline aims to provide both biocurators and external users with best practices for manually curating IDPs and IDRs in DisProt. It describes every step of the literature curation process and provides use cases of IDP curation within DisProt. Database URL: https://disprot.org/.
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Affiliation(s)
- Federica Quaglia
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council (CNR-IBIOM), Via Giovanni Amendola, 122/O, Bari 70126, Italy
- Department of Biomedical Sciences, University of Padova, Via Ugo Bassi, 58/B, Padova 35131, Italy
| | - Anastasia Chasapi
- Biological Computation & Process Laboratory, Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas, 6th km Harilaou - Thermis 57001 Thermi, Thessalonica 57001, Greece
| | - Maria Victoria Nugnes
- Department of Biomedical Sciences, University of Padova, Via Ugo Bassi, 58/B, Padova 35131, Italy
| | | | - Emanuela Leonardi
- Department of Biomedical Sciences, University of Padova, Via Ugo Bassi, 58/B, Padova 35131, Italy
| | - Damiano Piovesan
- Department of Biomedical Sciences, University of Padova, Via Ugo Bassi, 58/B, Padova 35131, Italy
| | - Silvio C E Tosatto
- Department of Biomedical Sciences, University of Padova, Via Ugo Bassi, 58/B, Padova 35131, Italy
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2
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Aspromonte MC, Nugnes MV, Quaglia F, Bouharoua A, Tosatto SCE, Piovesan D. DisProt in 2024: improving function annotation of intrinsically disordered proteins. Nucleic Acids Res 2024; 52:D434-D441. [PMID: 37904585 PMCID: PMC10767923 DOI: 10.1093/nar/gkad928] [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: 09/08/2023] [Revised: 10/05/2023] [Accepted: 10/10/2023] [Indexed: 11/01/2023] Open
Abstract
DisProt (URL: https://disprot.org) is the gold standard database for intrinsically disordered proteins and regions, providing valuable information about their functions. The latest version of DisProt brings significant advancements, including a broader representation of functions and an enhanced curation process. These improvements aim to increase both the quality of annotations and their coverage at the sequence level. Higher coverage has been achieved by adopting additional evidence codes. Quality of annotations has been improved by systematically applying Minimum Information About Disorder Experiments (MIADE) principles and reporting all the details of the experimental setup that could potentially influence the structural state of a protein. The DisProt database now includes new thematic datasets and has expanded the adoption of Gene Ontology terms, resulting in an extensive functional repertoire which is automatically propagated to UniProtKB. Finally, we show that DisProt's curated annotations strongly correlate with disorder predictions inferred from AlphaFold2 pLDDT (predicted Local Distance Difference Test) confidence scores. This comparison highlights the utility of DisProt in explaining apparent uncertainty of certain well-defined predicted structures, which often correspond to folding-upon-binding fragments. Overall, DisProt serves as a comprehensive resource, combining experimental evidence of disorder information to enhance our understanding of intrinsically disordered proteins and their functional implications.
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Affiliation(s)
| | | | - Federica Quaglia
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council (CNR-IBIOM), Bari, Italy
| | - Adel Bouharoua
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | | | - Damiano Piovesan
- Department of Biomedical Sciences, University of Padova, Padova, Italy
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3
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Mészáros B, Hatos A, Palopoli N, Quaglia F, Salladini E, Van Roey K, Arthanari H, Dosztányi Z, Felli IC, Fischer PD, Hoch JC, Jeffries CM, Longhi S, Maiani E, Orchard S, Pancsa R, Papaleo E, Pierattelli R, Piovesan D, Pritisanac I, Tenorio L, Viennet T, Tompa P, Vranken W, Tosatto SCE, Davey NE. Minimum information guidelines for experiments structurally characterizing intrinsically disordered protein regions. Nat Methods 2023; 20:1291-1303. [PMID: 37400558 DOI: 10.1038/s41592-023-01915-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [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: 07/12/2022] [Accepted: 05/18/2023] [Indexed: 07/05/2023]
Abstract
An unambiguous description of an experiment, and the subsequent biological observation, is vital for accurate data interpretation. Minimum information guidelines define the fundamental complement of data that can support an unambiguous conclusion based on experimental observations. We present the Minimum Information About Disorder Experiments (MIADE) guidelines to define the parameters required for the wider scientific community to understand the findings of an experiment studying the structural properties of intrinsically disordered regions (IDRs). MIADE guidelines provide recommendations for data producers to describe the results of their experiments at source, for curators to annotate experimental data to community resources and for database developers maintaining community resources to disseminate the data. The MIADE guidelines will improve the interpretability of experimental results for data consumers, facilitate direct data submission, simplify data curation, improve data exchange among repositories and standardize the dissemination of the key metadata on an IDR experiment by IDR data sources.
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Affiliation(s)
- Bálint Mészáros
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
- Department of Structural Biology and Center for Data Driven Discovery, St Jude Children's Research Hospital, Memphis, TN, USA
| | - András Hatos
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Department of Oncology, Lausanne University Hospital, Lausanne, Switzerland
- Department of Computational Biology, University of Lausanne, Lausanne, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
- Swiss Cancer Center Leman, Lausanne, Switzerland
| | - Nicolas Palopoli
- Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes - CONICET, Bernal, Buenos Aires, Argentina
| | - Federica Quaglia
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council (CNR-IBIOM), Bari, Italy
| | - Edoardo Salladini
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Kim Van Roey
- Interuniversity Institute of Bioinformatics in Brussels, ULB-VUB, Brussels, Belgium
- Structural Biology Brussels, Vrije Universiteit Brussel, Brussels, Belgium
| | - Haribabu Arthanari
- Harvard Medical School (HMS), Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute (DFCI), Boston, MA, USA
| | | | - Isabella C Felli
- Department of Chemistry 'Ugo Schiff' and Magnetic Resonance Center, University of Florence, Sesto Fiorentino (Florence), Italy
| | - Patrick D Fischer
- Harvard Medical School (HMS), Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute (DFCI), Boston, MA, USA
| | - Jeffrey C Hoch
- Department of Molecular Biology and Biophysics, UConn Health, Farmington, CT, USA
| | - Cy M Jeffries
- European Molecular Biology Laboratory (EMBL), Hamburg Unit, c/o Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | - Sonia Longhi
- Laboratory Architecture et Fonction des Macromolécules Biologiques (AFMB), UMR 7257, Aix Marseille University and Centre National de la Recherche Scientifique (CNRS), Marseille, France
| | - Emiliano Maiani
- Cancer Structural Biology, Danish Cancer Society Research Center, Copenhagen, Denmark
- UniCamillus - Saint Camillus International University of Health and Medical Sciences, Rome, Italy
| | - Sandra Orchard
- European Bioinformatics Institute (EMBL-EBI), European Molecular Biology Laboratory, Hinxton, UK
| | - Rita Pancsa
- Institute of Enzymology, Research Centre for Natural Sciences, Budapest, Hungary
| | - Elena Papaleo
- Cancer Structural Biology, Danish Cancer Society Research Center, Copenhagen, Denmark
- Cancer Systems Biology, Section for Bioinformatics, Department of Health and Technology, Technical University of Denmark, Lyngby, Denmark
| | - Roberta Pierattelli
- Department of Chemistry 'Ugo Schiff' and Magnetic Resonance Center, University of Florence, Sesto Fiorentino (Florence), Italy
| | - Damiano Piovesan
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Iva Pritisanac
- Hospital for Sick Children, Toronto, Ontario, Canada
- Medical University of Graz, Graz, Austria
| | - Luiggi Tenorio
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Thibault Viennet
- Harvard Medical School (HMS), Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute (DFCI), Boston, MA, USA
| | - Peter Tompa
- Institute of Enzymology, Research Centre for Natural Sciences, Budapest, Hungary
- VIB-VUB Center for Structural Biology, Brussels, Belgium
- Structural Biology Brussels, Department of Bioengineering Sciences, Vrije Universiteit Brussel, Brussels, Belgium
| | - Wim Vranken
- Interuniversity Institute of Bioinformatics in Brussels, ULB-VUB, Brussels, Belgium
- Structural Biology Brussels, Vrije Universiteit Brussel, Brussels, Belgium
- Structural Biology Brussels, Department of Bioengineering Sciences, Vrije Universiteit Brussel, Brussels, Belgium
| | | | - Norman E Davey
- Division Of Cancer Biology, Institute of Cancer Research, Chester Beatty Laboratories, Chelsea, London, UK.
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4
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Aleksander SA, Balhoff J, Carbon S, Cherry JM, Drabkin HJ, Ebert D, Feuermann M, Gaudet P, Harris NL, Hill DP, Lee R, Mi H, Moxon S, Mungall CJ, Muruganugan A, Mushayahama T, Sternberg PW, Thomas PD, Van Auken K, Ramsey J, Siegele DA, Chisholm RL, Fey P, Aspromonte MC, Nugnes MV, Quaglia F, Tosatto S, Giglio M, Nadendla S, Antonazzo G, Attrill H, Dos Santos G, Marygold S, Strelets V, Tabone CJ, Thurmond J, Zhou P, Ahmed SH, Asanitthong P, Luna Buitrago D, Erdol MN, Gage MC, Ali Kadhum M, Li KYC, Long M, Michalak A, Pesala A, Pritazahra A, Saverimuttu SCC, Su R, Thurlow KE, Lovering RC, Logie C, Oliferenko S, Blake J, Christie K, Corbani L, Dolan ME, Drabkin HJ, Hill DP, Ni L, Sitnikov D, Smith C, Cuzick A, Seager J, Cooper L, Elser J, Jaiswal P, Gupta P, Jaiswal P, Naithani S, Lera-Ramirez M, Rutherford K, Wood V, De Pons JL, Dwinell MR, Hayman GT, Kaldunski ML, Kwitek AE, Laulederkind SJF, Tutaj MA, Vedi M, Wang SJ, D'Eustachio P, Aimo L, Axelsen K, Bridge A, Hyka-Nouspikel N, Morgat A, Aleksander SA, Cherry JM, Engel SR, Karra K, Miyasato SR, Nash RS, Skrzypek MS, Weng S, Wong ED, Bakker E, Berardini TZ, Reiser L, Auchincloss A, Axelsen K, Argoud-Puy G, Blatter MC, Boutet E, Breuza L, Bridge A, Casals-Casas C, Coudert E, Estreicher A, Livia Famiglietti M, Feuermann M, Gos A, Gruaz-Gumowski N, Hulo C, Hyka-Nouspikel N, Jungo F, Le Mercier P, Lieberherr D, Masson P, Morgat A, Pedruzzi I, Pourcel L, Poux S, Rivoire C, Sundaram S, Bateman A, Bowler-Barnett E, Bye-A-Jee H, Denny P, Ignatchenko A, Ishtiaq R, Lock A, Lussi Y, Magrane M, Martin MJ, Orchard S, Raposo P, Speretta E, Tyagi N, Warner K, Zaru R, Diehl AD, Lee R, Chan J, Diamantakis S, Raciti D, Zarowiecki M, Fisher M, James-Zorn C, Ponferrada V, Zorn A, Ramachandran S, Ruzicka L, Westerfield M. The Gene Ontology knowledgebase in 2023. Genetics 2023; 224:iyad031. [PMID: 36866529 PMCID: PMC10158837 DOI: 10.1093/genetics/iyad031] [Citation(s) in RCA: 218] [Impact Index Per Article: 218.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/10/2023] [Accepted: 02/11/2023] [Indexed: 03/04/2023] Open
Abstract
The Gene Ontology (GO) knowledgebase (http://geneontology.org) is a comprehensive resource concerning the functions of genes and gene products (proteins and noncoding RNAs). GO annotations cover genes from organisms across the tree of life as well as viruses, though most gene function knowledge currently derives from experiments carried out in a relatively small number of model organisms. Here, we provide an updated overview of the GO knowledgebase, as well as the efforts of the broad, international consortium of scientists that develops, maintains, and updates the GO knowledgebase. The GO knowledgebase consists of three components: (1) the GO-a computational knowledge structure describing the functional characteristics of genes; (2) GO annotations-evidence-supported statements asserting that a specific gene product has a particular functional characteristic; and (3) GO Causal Activity Models (GO-CAMs)-mechanistic models of molecular "pathways" (GO biological processes) created by linking multiple GO annotations using defined relations. Each of these components is continually expanded, revised, and updated in response to newly published discoveries and receives extensive QA checks, reviews, and user feedback. For each of these components, we provide a description of the current contents, recent developments to keep the knowledgebase up to date with new discoveries, and guidance on how users can best make use of the data that we provide. We conclude with future directions for the project.
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5
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Deutsch EW, Vizcaíno JA, Jones AR, Binz PA, Lam H, Klein J, Bittremieux W, Perez-Riverol Y, Tabb DL, Walzer M, Ricard-Blum S, Hermjakob H, Neumann S, Mak TD, Kawano S, Mendoza L, Van Den Bossche T, Gabriels R, Bandeira N, Carver J, Pullman B, Sun Z, Hoffmann N, Shofstahl J, Zhu Y, Licata L, Quaglia F, Tosatto SCE, Orchard SE. Proteomics Standards Initiative at Twenty Years: Current Activities and Future Work. J Proteome Res 2023; 22:287-301. [PMID: 36626722 PMCID: PMC9903322 DOI: 10.1021/acs.jproteome.2c00637] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Indexed: 01/11/2023]
Abstract
The Human Proteome Organization (HUPO) Proteomics Standards Initiative (PSI) has been successfully developing guidelines, data formats, and controlled vocabularies (CVs) for the proteomics community and other fields supported by mass spectrometry since its inception 20 years ago. Here we describe the general operation of the PSI, including its leadership, working groups, yearly workshops, and the document process by which proposals are thoroughly and publicly reviewed in order to be ratified as PSI standards. We briefly describe the current state of the many existing PSI standards, some of which remain the same as when originally developed, some of which have undergone subsequent revisions, and some of which have become obsolete. Then the set of proposals currently being developed are described, with an open call to the community for participation in the forging of the next generation of standards. Finally, we describe some synergies and collaborations with other organizations and look to the future in how the PSI will continue to promote the open sharing of data and thus accelerate the progress of the field of proteomics.
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Affiliation(s)
- Eric W. Deutsch
- Institute
for Systems Biology, Seattle, Washington 98109, United States
| | - Juan Antonio Vizcaíno
- European
Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, United Kingdom
| | - Andrew R. Jones
- Institute
of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 7ZB, United Kingdom
| | - Pierre-Alain Binz
- Clinical
Chemistry Service, Lausanne University Hospital, 1011 976 Lausanne, Switzerland
| | - Henry Lam
- Department
of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong 999077, P. R. China.
| | - Joshua Klein
- Program for
Bioinformatics, Boston University, Boston, Massachusetts 02215, United States
| | - Wout Bittremieux
- Skaggs
School
of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, California 92093, United States
- Department
of Computer Science, University of Antwerp, 2020 Antwerpen, Belgium
| | - Yasset Perez-Riverol
- European
Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, United Kingdom
| | - David L. Tabb
- SA MRC
Centre for TB Research, DST/NRF Centre of Excellence for Biomedical
TB Research, Division of Molecular Biology and Human Genetics, Faculty
of Medicine and Health Sciences, Stellenbosch
University, Cape Town 7602, South Africa
| | - Mathias Walzer
- European
Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, United Kingdom
| | - Sylvie Ricard-Blum
- Univ.
Lyon, Université Lyon 1, ICBMS, UMR 5246, 69622 Villeurbanne, France
| | - Henning Hermjakob
- European
Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, United Kingdom
| | - Steffen Neumann
- Bioinformatics
and Scientific Data, Leibniz Institute of
Plant Biochemistry, 06120 Halle, Germany
- German
Centre for Integrative Biodiversity Research (iDiv), 04103 Halle-Jena-Leipzig, Germany
| | - Tytus D. Mak
- Mass Spectrometry
Data Center, National Institute of Standards
and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, United
States
| | - Shin Kawano
- Database
Center for Life Science, Joint Support Center for Data Science Research, Research Organization of Information and Systems, Chiba 277-0871, Japan
- Faculty
of Contemporary Society, Toyama University
of International Studies, Toyama 930-1292, Japan
- School
of Frontier Engineering, Kitasato University, Sagamihara 252-0373, Japan
| | - Luis Mendoza
- Institute
for Systems Biology, Seattle, Washington 98109, United States
| | - Tim Van Den Bossche
- VIB-UGent
Center for Medical Biotechnology, VIB, 9052 Ghent, Belgium
- Department
of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, 9052 Ghent, Belgium
| | - Ralf Gabriels
- VIB-UGent
Center for Medical Biotechnology, VIB, 9052 Ghent, Belgium
- Department
of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, 9052 Ghent, Belgium
| | - Nuno Bandeira
- Skaggs
School
of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, California 92093, United States
- Center
for Computational Mass Spectrometry, Department of Computer Science
and Engineering, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego 92093-0404, United States
| | - Jeremy Carver
- Center
for Computational Mass Spectrometry, Department of Computer Science
and Engineering, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego 92093-0404, United States
| | - Benjamin Pullman
- Center
for Computational Mass Spectrometry, Department of Computer Science
and Engineering, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego 92093-0404, United States
| | - Zhi Sun
- Institute
for Systems Biology, Seattle, Washington 98109, United States
| | - Nils Hoffmann
- Institute
for Bio- and Geosciences (IBG-5), Forschungszentrum
Jülich GmbH, 52428 Jülich, Germany
| | - Jim Shofstahl
- Thermo
Fisher Scientific, 355 River Oaks Parkway, San Jose, California 95134, United States
| | - Yunping Zhu
- National
Center for Protein Sciences (Beijing), Beijing
Institute of Lifeomics, #38, Life Science Park, Changping District, Beijing 102206, China
| | - Luana Licata
- Fondazione
Human Technopole, 20157 Milan, Italy
- Department
of Biology, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Federica Quaglia
- Institute
of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council (CNR-IBIOM), 70126 Bari, Italy
- Department
of Biomedical Sciences, University of Padova, 35131 Padova, Italy
| | | | - Sandra E. Orchard
- European
Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, United Kingdom
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Quaglia F, Salladini E, Carraro M, Minervini G, Tosatto SCE, Le Mercier P. SARS-CoV-2 variants preferentially emerge at intrinsically disordered protein sites helping immune evasion. FEBS J 2022; 289:4240-4250. [PMID: 35108439 PMCID: PMC9542094 DOI: 10.1111/febs.16379] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [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: 11/26/2021] [Revised: 01/21/2022] [Accepted: 01/31/2022] [Indexed: 12/13/2022]
Abstract
The SARS‐CoV‐2 pandemic is maintained by the emergence of successive variants, highlighting the flexibility of the protein sequences of the virus. We show that experimentally determined intrinsically disordered regions (IDRs) are abundant in the SARS‐CoV‐2 viral proteins, making up to 28% of disorder content for the S1 subunit of spike and up to 51% for the nucleoprotein, with the vast majority of mutations occurring in the 13 major variants mapped to these IDRs. Strikingly, antigenic sites are enriched in IDRs, in the receptor‐binding domain (RBD) and in the N‐terminal domain (NTD), suggesting a key role of structural flexibility in the antigenicity of the SARS‐CoV‐2 protein surface. Mutations occurring in the S1 subunit and nucleoprotein (N) IDRs are critical for immune evasion and antibody escape, suggesting potential additional implications for vaccines and monoclonal therapeutic strategies. Overall, this suggests the presence of variable regions on S1 and N protein surfaces, which confer sequence and antigenic flexibility to the virus without altering its protein functions.
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Affiliation(s)
- Federica Quaglia
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council (CNR-IBIOM), Bari, Italy.,Department of Biomedical Sciences, University of Padova, Italy
| | | | - Marco Carraro
- Department of Biomedical Sciences, University of Padova, Italy
| | | | | | - Philippe Le Mercier
- Swiss-Prot group, SIB Swiss Institute of Bioinformatics, Geneva, Switzerland
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7
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Quaglia F, Hatos A, Salladini E, Piovesan D, Tosatto SCE. Exploring Manually Curated Annotations of Intrinsically Disordered Proteins with DisProt. Curr Protoc 2022; 2:e484. [PMID: 35789137 DOI: 10.1002/cpz1.484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
DisProt is the major repository of manually curated data for intrinsically disordered proteins collected from the literature. Although lacking a stable three-dimensional structure under physiological conditions, intrinsically disordered proteins carry out a plethora of biological functions, some of them directly arising from their flexible nature. A growing number of scientific studies have been published during the last few decades to shed light on their unstructured state, their binding modes, and their functions. DisProt makes use of a team of expert biocurators to provide up-to-date annotations of intrinsically disordered proteins from the literature, making them available to the scientific community. Here we present a comprehensive description on how to use DisProt in different contexts and provide a detailed explanation of how to explore and interpret manually curated annotations of intrinsically disordered proteins. We describe how to search DisProt annotations, both using the web interface and the API for programmatic access. Finally, we explain how to visualize and interpret a DisProt entry, the SARS-CoV-2 Nucleoprotein, characterized by the presence of unstructured N-terminal and C-terminal regions and a flexible linker. © 2022 The Authors. Current Protocols published by Wiley Periodicals LLC. Basic Protocol 1: Performing a search in DisProt Support Protocol 1: Downloading options Support Protocol 2: Programmatic access with DisProt REST API Basic Protocol 2: Exploring the DisProt Ontology page Basic Protocol 3: Visualizing and interpreting DisProt entries-the SARS-CoV-2 Nucleoprotein use case.
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Affiliation(s)
- Federica Quaglia
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council (CNR-IBIOM), Bari, Italy
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - András Hatos
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Edoardo Salladini
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Damiano Piovesan
- Department of Biomedical Sciences, University of Padova, Padova, Italy
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8
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Quaglia F, Balakrishnan R, Bello SM, Vasilevsky N. Conference report: Biocuration 2021 Virtual Conference. Database (Oxford) 2022. [PMCID: PMC9278315 DOI: 10.1093/database/baac027] [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: 11/14/2022]
Abstract
Abstract
The International Society for Biocuration (ISB) aims to promote the field of biocuration and provide a community forum for information exchange and networking. Over the past 14 years, the ISB has hosted annual international conferences, entirely dedicated to the field of biocuration, that rotate between regions across the world. These meetings bring together biocurators from various roles, including database curators, bioinformaticians, ontology developers and students. Due to the ongoing global pandemic, the 14th Annual ISB Biocuration Conference (ISB2021) was held virtually in the form of four sessions and one workshop over the course of the year. Each of the four virtual sessions included panel discussions covering (i) The Future of Biocuration, (ii) Career paths and projections in Biocuration, (iii) Addressing Implicit or Unconscious Bias: Equity, Diversity and Inclusion and (iv) Strategic planning. Here we report on highlights from the virtual conference and share some of the ideas and future goals of the ISB.
Database URL:https://www.biocuration.org/14th-annual-biocuration-conference-virtual/
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Affiliation(s)
- Federica Quaglia
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council (CNR-IBIOM), Via Giovanni Amendola, 122/O , Bari 70126, Italy
- Department of Biomedical Sciences, University of Padova, Via Ugo Bassi, 58/B , Padova 35131, Italy
| | | | - Susan M Bello
- Jackson Laboratory, 600 Main Street , Bar Harbor, ME 04609, USA
| | - Nicole Vasilevsky
- Translational and Integrative Sciences Laboratory, University of Colorado Anschutz Medical Campus, Fitzsimons Building, 1300 E 17th Place , Aurora, CO 80045, USA
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9
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Piovesan D, Monzon AM, Quaglia F, Tosatto SCE. Databases for intrinsically disordered proteins. Acta Crystallogr D Struct Biol 2022; 78:144-151. [PMID: 35102880 PMCID: PMC8805306 DOI: 10.1107/s2059798321012109] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 11/12/2021] [Indexed: 11/28/2022] Open
Abstract
Intrinsically disordered regions (IDRs) lacking a fixed three-dimensional protein structure are widespread and play a central role in cell regulation. Only a small fraction of IDRs have been functionally characterized, with heterogeneous experimental evidence that is largely buried in the literature. Predictions of IDRs are still difficult to estimate and are poorly characterized. Here, an overview of the publicly available knowledge about IDRs is reported, including manually curated resources, deposition databases and prediction repositories. The types, scopes and availability of the various resources are analyzed, and their complementarity and overlap are highlighted. The volume of information included and the relevance to the field of structural biology are compared.
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Affiliation(s)
- Damiano Piovesan
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | | | - Federica Quaglia
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council (CNR–IBIOM), Bari, Italy
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10
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Quaglia F, Mészáros B, Salladini E, Hatos A, Pancsa R, Chemes LB, Pajkos M, Lazar T, Peña-Díaz S, Santos J, Ács V, Farahi N, Fichó E, Aspromonte M, Bassot C, Chasapi A, Davey N, Davidović R, Dobson L, Elofsson A, Erdős G, Gaudet P, Giglio M, Glavina J, Iserte J, Iglesias V, Kálmán Z, Lambrughi M, Leonardi E, Longhi S, Macedo-Ribeiro S, Maiani E, Marchetti J, Marino-Buslje C, Mészáros A, Monzon A, Minervini G, Nadendla S, Nilsson JF, Novotný M, Ouzounis C, Palopoli N, Papaleo E, Pereira P, Pozzati G, Promponas V, Pujols J, Rocha AS, Salas M, Sawicki LR, Schad E, Shenoy A, Szaniszló T, Tsirigos K, Veljkovic N, Parisi G, Ventura S, Dosztányi Z, Tompa P, Tosatto SCE, Piovesan D. DisProt in 2022: improved quality and accessibility of protein intrinsic disorder annotation. Nucleic Acids Res 2022; 50:D480-D487. [PMID: 34850135 PMCID: PMC8728214 DOI: 10.1093/nar/gkab1082] [Citation(s) in RCA: 79] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/15/2021] [Accepted: 10/20/2021] [Indexed: 02/03/2023] Open
Abstract
The Database of Intrinsically Disordered Proteins (DisProt, URL: https://disprot.org) is the major repository of manually curated annotations of intrinsically disordered proteins and regions from the literature. We report here recent updates of DisProt version 9, including a restyled web interface, refactored Intrinsically Disordered Proteins Ontology (IDPO), improvements in the curation process and significant content growth of around 30%. Higher quality and consistency of annotations is provided by a newly implemented reviewing process and training of curators. The increased curation capacity is fostered by the integration of DisProt with APICURON, a dedicated resource for the proper attribution and recognition of biocuration efforts. Better interoperability is provided through the adoption of the Minimum Information About Disorder (MIADE) standard, an active collaboration with the Gene Ontology (GO) and Evidence and Conclusion Ontology (ECO) consortia and the support of the ELIXIR infrastructure.
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Affiliation(s)
- Federica Quaglia
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council (CNR-IBIOM), Bari, Italy
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Bálint Mészáros
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg 69117, Germany
| | - Edoardo Salladini
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - András Hatos
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Rita Pancsa
- Institute of Enzymology, Research Centre for Natural Sciences, Budapest 1117, Hungary
| | - Lucía B Chemes
- Instituto de Investigaciones Biotecnológicas (IIBiO-CONICET), Universidad Nacional de San Martín, Av. 25 de Mayo y Francia, CP1650 Buenos Aires, Argentina
| | - Mátyás Pajkos
- Department of Biochemistry, Eötvös Loránd University, Pázmány Péter stny 1/c, Budapest H-1117, Hungary
| | - Tamas Lazar
- VIB-VUB Center for Structural Biology, Vlaams Instituut voor Biotechnology, Brussels, Belgium
- Structural Biology Brussels (SBB), Bioengineering Sciences Department, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Samuel Peña-Díaz
- Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Barcelona, Spain
- Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Jaime Santos
- Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Barcelona, Spain
- Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Veronika Ács
- Institute of Enzymology, Research Centre for Natural Sciences, Budapest 1117, Hungary
| | - Nazanin Farahi
- VIB-VUB Center for Structural Biology, Vlaams Instituut voor Biotechnology, Brussels, Belgium
- Structural Biology Brussels (SBB), Bioengineering Sciences Department, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Erzsébet Fichó
- Institute of Enzymology, Research Centre for Natural Sciences, Budapest 1117, Hungary
- Cytocast Kft., Vecsés, Hungary
| | - Maria Cristina Aspromonte
- Department of Woman and Child Health, University of Padova, Padova, Italy
- Pediatric Research Institute, Città della Speranza, Padova, Italy
| | - Claudio Bassot
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm University, 171 21 Solna, Sweden
| | - Anastasia Chasapi
- Biological Computation & Process Laboratory, Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas, Thermi, Thessalonica 57001, Greece
| | - Norman E Davey
- Institute of Cancer Research, Chester Beatty Laboratories, 237 Fulham Rd, Chelsea, London, UK
| | - Radoslav Davidović
- Laboratory for Bioinformatics and Computational Chemistry, Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, 11000Belgrade, Serbia
| | - Laszlo Dobson
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg 69117, Germany
- Institute of Enzymology, Research Centre for Natural Sciences, Budapest 1117, Hungary
| | - Arne Elofsson
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm University, 171 21 Solna, Sweden
| | - Gábor Erdős
- Department of Biochemistry, Eötvös Loránd University, Pázmány Péter stny 1/c, Budapest H-1117, Hungary
| | - Pascale Gaudet
- Swiss-Prot group, SIB Swiss Institute of Bioinformatics, Geneva, Switzerland
| | - Michelle Giglio
- Institute for Genome Sciences, University of Maryland School of Medicine 670 W. Baltimore St., Baltimore, MD 21201, USA
| | - Juliana Glavina
- Instituto de Investigaciones Biotecnológicas (IIBiO-CONICET), Universidad Nacional de San Martín, Av. 25 de Mayo y Francia, CP1650 Buenos Aires, Argentina
| | - Javier Iserte
- Bioinformatics Unit, Fundación Instituto Leloir, Buenos Aires, C1405BWE, Argentina
| | - Valentín Iglesias
- Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Barcelona, Spain
- Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Zsófia Kálmán
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Práter u. 50/A, 1083 Budapest, Hungary
| | - Matteo Lambrughi
- Cancer Structural Biology, Danish Cancer Society Research Center, Strandboulevarden 49, 2100 Copenhagen, Denmark
| | - Emanuela Leonardi
- Department of Woman and Child Health, University of Padova, Padova, Italy
- Pediatric Research Institute, Città della Speranza, Padova, Italy
| | - Sonia Longhi
- Lab. Architecture et Fonction des Macromolécules Biologiques (AFMB), UMR 7257, Aix Marseille University and Centre National de la Recherche Scientifique (CNRS), 163 Avenue de Luminy, Case 932, 13288, Marseille, France
| | - Sandra Macedo-Ribeiro
- Instituto de Biologia Molecular e Celular (IBMC), Universidade do Porto, 4200-135 Porto, Portugal
- Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, 4200-135 Porto, Portugal
| | - Emiliano Maiani
- Cancer Structural Biology, Danish Cancer Society Research Center, Strandboulevarden 49, 2100 Copenhagen, Denmark
| | - Julia Marchetti
- Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes - CONICET, Bernal, Buenos Aires B1876BXD, Argentina
| | | | - Attila Mészáros
- VIB-VUB Center for Structural Biology, Vlaams Instituut voor Biotechnology, Brussels, Belgium
- Structural Biology Brussels (SBB), Bioengineering Sciences Department, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | | | | | - Suvarna Nadendla
- Institute for Genome Sciences, University of Maryland School of Medicine 670 W. Baltimore St., Baltimore, MD 21201, USA
| | - Juliet F Nilsson
- Lab. Architecture et Fonction des Macromolécules Biologiques (AFMB), UMR 7257, Aix Marseille University and Centre National de la Recherche Scientifique (CNRS), 163 Avenue de Luminy, Case 932, 13288, Marseille, France
| | - Marian Novotný
- Dep. of Cell Biology, Faculty of Science, Vinicna 7, 128 43, Prague, Czech Republic
| | - Christos A Ouzounis
- Biological Computation & Process Laboratory, Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas, Thermi, Thessalonica 57001, Greece
- Biological Computation & Computational Biology Group, Artificial Intelligence & Information Analysis Lab, Department of Computer Science, Aristotle University of Thessalonica, Thessalonica 54124, Greece
| | - Nicolás Palopoli
- Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes - CONICET, Bernal, Buenos Aires B1876BXD, Argentina
| | - Elena Papaleo
- Cancer Structural Biology, Danish Cancer Society Research Center, Strandboulevarden 49, 2100 Copenhagen, Denmark
- Cancer Systems Biology, Section for Bioinformatics, Department of Health and Technology, Technical University of Denmark, Lyngby, Denmark
| | - Pedro José Barbosa Pereira
- Instituto de Biologia Molecular e Celular (IBMC), Universidade do Porto, 4200-135 Porto, Portugal
- Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, 4200-135 Porto, Portugal
| | - Gabriele Pozzati
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm University, 171 21 Solna, Sweden
| | - Vasilis J Promponas
- Bioinformatics Research Laboratory, Department of Biological Sciences, University of Cyprus, Nicosia, Cyprus
| | - Jordi Pujols
- Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Barcelona, Spain
- Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, Barcelona, Spain
| | | | - Martin Salas
- Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes - CONICET, Bernal, Buenos Aires B1876BXD, Argentina
| | - Luciana Rodriguez Sawicki
- Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes - CONICET, Bernal, Buenos Aires B1876BXD, Argentina
| | - Eva Schad
- Institute of Enzymology, Research Centre for Natural Sciences, Budapest 1117, Hungary
| | - Aditi Shenoy
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm University, 171 21 Solna, Sweden
| | - Tamás Szaniszló
- Department of Biochemistry, Eötvös Loránd University, Pázmány Péter stny 1/c, Budapest H-1117, Hungary
| | - Konstantinos D Tsirigos
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Wellcome Genome Campus, Hinxton, UK
| | - Nevena Veljkovic
- Laboratory for Bioinformatics and Computational Chemistry, Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, 11000Belgrade, Serbia
| | - Gustavo Parisi
- Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes - CONICET, Bernal, Buenos Aires B1876BXD, Argentina
| | - Salvador Ventura
- Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Barcelona, Spain
- Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, Barcelona, Spain
- ICREA, Barcelona, Spain
| | - Zsuzsanna Dosztányi
- Department of Biochemistry, Eötvös Loránd University, Pázmány Péter stny 1/c, Budapest H-1117, Hungary
| | - Peter Tompa
- Institute of Enzymology, Research Centre for Natural Sciences, Budapest 1117, Hungary
- VIB-VUB Center for Structural Biology, Vlaams Instituut voor Biotechnology, Brussels, Belgium
- Structural Biology Brussels (SBB), Bioengineering Sciences Department, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | | | - Damiano Piovesan
- Department of Biomedical Sciences, University of Padova, Padova, Italy
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11
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Nadendla S, Jackson R, Munro J, Quaglia F, Mészáros B, Olley D, Hobbs ET, Goralski SM, Chibucos M, Mungall CJ, Tosatto SCE, Erill I, Giglio MG. ECO: the Evidence and Conclusion Ontology, an update for 2022. Nucleic Acids Res 2022; 50:D1515-D1521. [PMID: 34986598 PMCID: PMC8728134 DOI: 10.1093/nar/gkab1025] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/12/2021] [Accepted: 10/18/2021] [Indexed: 11/12/2022] Open
Abstract
The Evidence and Conclusion Ontology (ECO) is a community resource that provides an ontology of terms used to capture the type of evidence that supports biomedical annotations and assertions. Consistent capture of evidence information with ECO allows tracking of annotation provenance, establishment of quality control measures, and evidence-based data mining. ECO is in use by dozens of data repositories and resources with both specific and general areas of focus. ECO is continually being expanded and enhanced in response to user requests as well as our aim to adhere to community best-practices for ontology development. The ECO support team engages in multiple collaborations with other ontologies and annotating groups. Here we report on recent updates to the ECO ontology itself as well as associated resources that are available through this project. ECO project products are freely available for download from the project website (https://evidenceontology.org/) and GitHub (https://github.com/evidenceontology/evidenceontology). ECO is released into the public domain under a CC0 1.0 Universal license.
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Affiliation(s)
- Suvarna Nadendla
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Rebecca Jackson
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - James Munro
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Federica Quaglia
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council (CNR-IBIOM), Bari, Italy.,Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Bálint Mészáros
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg 69117, Germany
| | - Dustin Olley
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Elizabeth T Hobbs
- Department of Biological Sciences, University of Maryland Baltimore County, Baltimore, Maryland, United States
| | - Stephen M Goralski
- Department of Biological Sciences, University of Maryland Baltimore County, Baltimore, Maryland, United States
| | - Marcus Chibucos
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Christopher John Mungall
- Division of Environmental Genomics and Systems Biology, Lawrence Berkeley National Lab, Berkeley, California, USA
| | | | - Ivan Erill
- Department of Biological Sciences, University of Maryland Baltimore County, Baltimore, Maryland, United States
| | - Michelle G Giglio
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
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12
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Quaglia F, Lazar T, Hatos A, Tompa P, Piovesan D, Tosatto SCE. Exploring Curated Conformational Ensembles of Intrinsically Disordered Proteins in the Protein Ensemble Database. Curr Protoc 2021; 1:e192. [PMID: 34252246 DOI: 10.1002/cpz1.192] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The Protein Ensemble Database (PED; https://proteinensemble.org/) is the major repository of conformational ensembles of intrinsically disordered proteins (IDPs). Conformational ensembles of IDPs are primarily provided by their authors or occasionally collected from literature, and are subsequently deposited in PED along with the corresponding structured, manually curated metadata. The modeling of conformational ensembles usually relies on experimental data from small-angle X-ray scattering (SAXS), fluorescence resonance energy transfer (FRET), NMR spectroscopy, and molecular dynamics (MD) simulations, or a combination of these techniques. The growing number of scientific studies based on these data, along with the astounding and swift progress in the field of protein intrinsic disorder, has required a significant update and upgrade of PED, first published in 2014. To this end, the database was entirely renewed in 2020 and now has a dedicated team of biocurators providing manually curated descriptions of the methods and conditions applied to generate the conformational ensembles and for checking consistency of the data. Here, we present a detailed description on how to explore PED with its protein pages and experimental pages, and how to interpret entries of conformational ensembles. We describe how to efficiently search conformational ensembles deposited in PED by means of its web interface and API. We demonstrate how to make sense of the PED protein page and its associated experimental entry pages with reference to the yeast Sic1 use case. © 2021 The Authors. Current Protocols published by Wiley Periodicals LLC. Basic Protocol 1: Performing a search in PED Support Protocol 1: Programmatic access with the PED API Basic Protocol 2: Interpreting the protein page and the experimental entry page-the Sic1 use case Support Protocol 2: Downloading options Support Protocol 3: Understanding the validation report-the Sic1 use case Basic Protocol 3: Submitting new conformational ensembles to PED Basic Protocol 4: Providing feedback in PED.
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Affiliation(s)
- Federica Quaglia
- Department of Biomedical Sciences, University of Padova, Padova, Italy.,Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council (CNR-IBIOM), Bari, Italy
| | - Tamas Lazar
- Structural Biology Brussels, Vrije Universiteit Brussel, Brussels, Belgium.,VIB-VUB Center for Structural Biology, Brussels, Belgium
| | - András Hatos
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Peter Tompa
- Structural Biology Brussels, Vrije Universiteit Brussel, Brussels, Belgium.,VIB-VUB Center for Structural Biology, Brussels, Belgium.,Institute of Enzymology, Research Centre for Natural Sciences, Budapest, Hungary
| | - Damiano Piovesan
- Department of Biomedical Sciences, University of Padova, Padova, Italy
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13
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Mor E, Visenzi C, Marasciulo F, Longo FR, Quaglia F. Ultrasound appearance of perivascular epithelioid cell tumor (PEComa). Ultrasound Obstet Gynecol 2021; 57:844-845. [PMID: 32337799 DOI: 10.1002/uog.22057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 04/14/2020] [Accepted: 04/15/2020] [Indexed: 06/11/2023]
Affiliation(s)
- E Mor
- Department of Women's and Children's Health, Obstetrics & Gynecology Unit, Fondazione Poliambulanza Istituto Ospedaliero, Brescia, Italy
| | - C Visenzi
- Department of Women's and Children's Health, Obstetrics & Gynecology Unit, Fondazione Poliambulanza Istituto Ospedaliero, Brescia, Italy
| | - F Marasciulo
- Department of Obstetrics and Gynecology, Università di Brescia, Spedali Civili di Brescia, Brescia, Italy
| | - F R Longo
- Department of Pathology, Fondazione Poliambulanza Istituto Ospedaliero, Brescia, Italy
| | - F Quaglia
- Department of Women's and Children's Health, Obstetrics & Gynecology Unit, Fondazione Poliambulanza Istituto Ospedaliero, Brescia, Italy
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14
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Hatos A, Quaglia F, Piovesan D, Tosatto SCE. APICURON: a database to credit and acknowledge the work of biocurators. Database (Oxford) 2021; 2021:baab019. [PMID: 33882120 PMCID: PMC8060004 DOI: 10.1093/database/baab019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/12/2021] [Accepted: 04/12/2021] [Indexed: 11/14/2022]
Abstract
APICURON is an open and freely accessible resource that tracks and credits the work of biocurators across multiple participating knowledgebases. Biocuration is essential to extract knowledge from research data and make it available in a structured and standardized way to the scientific community. However, processing biological data-mainly from literature-requires a huge effort that is difficult to attribute and quantify. APICURON collects biocuration events from third-party resources and aggregates this information, spotlighting biocurator contributions. APICURON promotes biocurator engagement implementing gamification concepts like badges, medals and leaderboards and at the same time provides a monitoring service for registered resources and for biocurators themselves. APICURON adopts a data model that is flexible enough to represent and track the majority of biocuration activities. Biocurators are identified through their Open Researcher and Contributor ID. The definition of curation events, scoring systems and rules for assigning badges and medals are resource-specific and easily customizable. Registered resources can transfer curation activities on the fly through a secure and robust Application Programming Interface (API). Here, we show how simple and effective it is to connect a resource to APICURON, describing the DisProt database of intrinsically disordered proteins as a use case. We believe APICURON will provide biological knowledgebases with a service to recognize and credit the effort of their biocurators, monitor their activity and promote curator engagement. Database URL: https://apicuron.org.
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Affiliation(s)
- András Hatos
- Department of Biomedical Sciences, University of Padua, Via Ugo Bassi 58/B, Padova 35131, Italy
| | - Federica Quaglia
- Department of Biomedical Sciences, University of Padua, Via Ugo Bassi 58/B, Padova 35131, Italy
| | - Damiano Piovesan
- Department of Biomedical Sciences, University of Padua, Via Ugo Bassi 58/B, Padova 35131, Italy
| | - Silvio C E Tosatto
- Department of Biomedical Sciences, University of Padua, Via Ugo Bassi 58/B, Padova 35131, Italy
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15
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Lazar T, Martínez-Pérez E, Quaglia F, Hatos A, Chemes L, Iserte JA, Méndez NA, Garrone NA, Saldaño T, Marchetti J, Rueda A, Bernadó P, Blackledge M, Cordeiro TN, Fagerberg E, Forman-Kay JD, Fornasari M, Gibson TJ, Gomes GNW, Gradinaru C, Head-Gordon T, Jensen MR, Lemke E, Longhi S, Marino-Buslje C, Minervini G, Mittag T, Monzon A, Pappu RV, Parisi G, Ricard-Blum S, Ruff KM, Salladini E, Skepö M, Svergun D, Vallet S, Varadi M, Tompa P, Tosatto SCE, Piovesan D. PED in 2021: a major update of the protein ensemble database for intrinsically disordered proteins. Nucleic Acids Res 2021; 49:D404-D411. [PMID: 33305318 PMCID: PMC7778965 DOI: 10.1093/nar/gkaa1021] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/13/2020] [Accepted: 12/08/2020] [Indexed: 12/21/2022] Open
Abstract
The Protein Ensemble Database (PED) (https://proteinensemble.org), which holds structural ensembles of intrinsically disordered proteins (IDPs), has been significantly updated and upgraded since its last release in 2016. The new version, PED 4.0, has been completely redesigned and reimplemented with cutting-edge technology and now holds about six times more data (162 versus 24 entries and 242 versus 60 structural ensembles) and a broader representation of state of the art ensemble generation methods than the previous version. The database has a completely renewed graphical interface with an interactive feature viewer for region-based annotations, and provides a series of descriptors of the qualitative and quantitative properties of the ensembles. High quality of the data is guaranteed by a new submission process, which combines both automatic and manual evaluation steps. A team of biocurators integrate structured metadata describing the ensemble generation methodology, experimental constraints and conditions. A new search engine allows the user to build advanced queries and search all entry fields including cross-references to IDP-related resources such as DisProt, MobiDB, BMRB and SASBDB. We expect that the renewed PED will be useful for researchers interested in the atomic-level understanding of IDP function, and promote the rational, structure-based design of IDP-targeting drugs.
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Affiliation(s)
- Tamas Lazar
- VIB-VUB Center for Structural Biology, Flanders Institute for Biotechnology, Brussels 1050, Belgium
- Structural Biology Brussels, Bioengineering Sciences Department, Vrije Universiteit Brussel, Brussels 1050, Belgium
| | - Elizabeth Martínez-Pérez
- Bioinformatics Unit, Fundación Instituto Leloir, Buenos Aires, C1405BWE, Argentina
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg 69117, Germany
| | - Federica Quaglia
- Dept. of Biomedical Sciences, University of Padua, Padova 35131, Italy
| | - András Hatos
- Dept. of Biomedical Sciences, University of Padua, Padova 35131, Italy
| | - Lucía B Chemes
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo A. Ugalde’’, IIB-UNSAM, IIBIO-CONICET, Universidad Nacional de SanMartín, CP1650 San Martín, Buenos Aires, Argentina
| | - Javier A Iserte
- Bioinformatics Unit, Fundación Instituto Leloir, Buenos Aires, C1405BWE, Argentina
| | - Nicolás A Méndez
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo A. Ugalde’’, IIB-UNSAM, IIBIO-CONICET, Universidad Nacional de SanMartín, CP1650 San Martín, Buenos Aires, Argentina
| | - Nicolás A Garrone
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo A. Ugalde’’, IIB-UNSAM, IIBIO-CONICET, Universidad Nacional de SanMartín, CP1650 San Martín, Buenos Aires, Argentina
| | - Tadeo E Saldaño
- Laboratorio de Química y Biología Computacional, Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal B1876BXD, Buenos Aires, Argentina
| | - Julia Marchetti
- Laboratorio de Química y Biología Computacional, Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal B1876BXD, Buenos Aires, Argentina
| | - Ana Julia Velez Rueda
- Laboratorio de Química y Biología Computacional, Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal B1876BXD, Buenos Aires, Argentina
| | - Pau Bernadó
- Centre de Biochimie Structurale (CBS), CNRS, INSERM, University of Montpellier, Montpellier 34090, France
| | | | - Tiago N Cordeiro
- Centre de Biochimie Structurale (CBS), CNRS, INSERM, University of Montpellier, Montpellier 34090, France
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, Oeiras 2780-157, Portugal
| | - Eric Fagerberg
- Theoretical Chemistry, Lund University, Lund, POB 124, SE-221 00, Sweden
| | - Julie D Forman-Kay
- Molecular Medicine Program, Hospital for Sick Children, Toronto, M5G 1X8, Ontario, Canada
- Department of Biochemistry, University of Toronto, Toronto, M5S 1A8, Ontario, Canada
| | - Maria S Fornasari
- Laboratorio de Química y Biología Computacional, Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal B1876BXD, Buenos Aires, Argentina
| | - Toby J Gibson
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg 69117, Germany
| | - Gregory-Neal W Gomes
- Department of Physics, University of Toronto, Toronto, M5S 1A7, Ontario, Canada
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, Mississauga, L5L 1C6, Ontario, Canada
| | - Claudiu C Gradinaru
- Department of Physics, University of Toronto, Toronto, M5S 1A7, Ontario, Canada
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, Mississauga, L5L 1C6, Ontario, Canada
| | - Teresa Head-Gordon
- Departments of Chemistry, Bioengineering, Chemical and Biomolecular Engineering University of California, Berkeley, CA 94720, USA
| | | | - Edward A Lemke
- Biocentre, Johannes Gutenberg-University Mainz, Mainz 55128, Germany
- Institute of Molecular Biology, Mainz 55128, Germany
| | - Sonia Longhi
- Aix-Marseille University, CNRS, Architecture et Fonction des Macromolécules Biologiques (AFMB), Marseille 13288, France
| | | | | | - Tanja Mittag
- Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | | | - Rohit V Pappu
- Department of Biomedical Engineering, Center for Science & Engineering of Living Systems (CSELS), Washington University in St. Louis, MO 63130, USA
| | - Gustavo Parisi
- Laboratorio de Química y Biología Computacional, Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal B1876BXD, Buenos Aires, Argentina
| | - Sylvie Ricard-Blum
- Univ Lyon, University Claude Bernard Lyon 1, CNRS, INSA Lyon, CPE, Institute of Molecular and Supramolecular Chemistry and Biochemistry (ICBMS), UMR 5246, Villeurbanne, 69629 Lyon Cedex 07, France
| | - Kiersten M Ruff
- Department of Biomedical Engineering, Center for Science & Engineering of Living Systems (CSELS), Washington University in St. Louis, MO 63130, USA
| | - Edoardo Salladini
- Aix-Marseille University, CNRS, Architecture et Fonction des Macromolécules Biologiques (AFMB), Marseille 13288, France
| | - Marie Skepö
- Theoretical Chemistry, Lund University, Lund, POB 124, SE-221 00, Sweden
- LINXS - Lund Institute of Advanced Neutron and X-ray Science, Lund 223 70, Sweden
| | - Dmitri Svergun
- European Molecular Biology Laboratory, Hamburg Unit, Hamburg 22607, Germany
| | - Sylvain D Vallet
- Univ Lyon, University Claude Bernard Lyon 1, CNRS, INSA Lyon, CPE, Institute of Molecular and Supramolecular Chemistry and Biochemistry (ICBMS), UMR 5246, Villeurbanne, 69629 Lyon Cedex 07, France
| | - Mihaly Varadi
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Wellcome Genome Campus, Hinxton, CB10 1SD, UK
| | - Peter Tompa
- To whom correspondence should be addressed. Tel +32 473 785386;
| | - Silvio C E Tosatto
- Correspondence may also be addressed to Silvio C. E. Tosatto. Tel: +39 049 827 6269;
| | - Damiano Piovesan
- Dept. of Biomedical Sciences, University of Padua, Padova 35131, Italy
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16
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Piovesan D, Necci M, Escobedo N, Monzon AM, Hatos A, Mičetić I, Quaglia F, Paladin L, Ramasamy P, Dosztányi Z, Vranken WF, Davey N, Parisi G, Fuxreiter M, Tosatto SE. MobiDB: intrinsically disordered proteins in 2021. Nucleic Acids Res 2021; 49:D361-D367. [PMID: 33237329 PMCID: PMC7779018 DOI: 10.1093/nar/gkaa1058] [Citation(s) in RCA: 126] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/16/2020] [Accepted: 11/19/2020] [Indexed: 12/13/2022] Open
Abstract
The MobiDB database (URL: https://mobidb.org/) provides predictions and annotations for intrinsically disordered proteins. Here, we report recent developments implemented in MobiDB version 4, regarding the database format, with novel types of annotations and an improved update process. The new website includes a re-designed user interface, a more effective search engine and advanced API for programmatic access. The new database schema gives more flexibility for the users, as well as simplifying the maintenance and updates. In addition, the new entry page provides more visualisation tools including customizable feature viewer and graphs of the residue contact maps. MobiDB v4 annotates the binding modes of disordered proteins, whether they undergo disorder-to-order transitions or remain disordered in the bound state. In addition, disordered regions undergoing liquid-liquid phase separation or post-translational modifications are defined. The integrated information is presented in a simplified interface, which enables faster searches and allows large customized datasets to be downloaded in TSV, Fasta or JSON formats. An alternative advanced interface allows users to drill deeper into features of interest. A new statistics page provides information at database and proteome levels. The new MobiDB version presents state-of-the-art knowledge on disordered proteins and improves data accessibility for both computational and experimental users.
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Affiliation(s)
- Damiano Piovesan
- Dept. of Biomedical Sciences, University of Padua, Via Ugo Bassi 58/B, Padua 35121, Italy
| | - Marco Necci
- Dept. of Biomedical Sciences, University of Padua, Via Ugo Bassi 58/B, Padua 35121, Italy
| | - Nahuel Escobedo
- Dept. of Science and Technology, Universidad Nacional de Quilmes, Buenos Aires, Argentina
| | | | - András Hatos
- Dept. of Biomedical Sciences, University of Padua, Via Ugo Bassi 58/B, Padua 35121, Italy
| | - Ivan Mičetić
- Dept. of Biomedical Sciences, University of Padua, Via Ugo Bassi 58/B, Padua 35121, Italy
| | - Federica Quaglia
- Dept. of Biomedical Sciences, University of Padua, Via Ugo Bassi 58/B, Padua 35121, Italy
| | - Lisanna Paladin
- Dept. of Biomedical Sciences, University of Padua, Via Ugo Bassi 58/B, Padua 35121, Italy
| | - Pathmanaban Ramasamy
- Interuniversity Institute of Bioinformatics in Brussels, ULB/VUB, Triomflaan, BC building, 6th floor, CP 263, 1050 Brussels, Belgium
- Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
- Centre for Structural Biology, VIB, Pleinlaan 2, 1050 Brussels, Belgium
- VIB-UGent Center for Medical Biotechnology, VIB, Ghent 9000, Belgium
- Department of Biomolecular Medicine, Faculty of Health Sciences and Medicine, Ghent University, Ghent 9000, Belgium
| | | | - Wim F Vranken
- Interuniversity Institute of Bioinformatics in Brussels, ULB/VUB, Triomflaan, BC building, 6th floor, CP 263, 1050 Brussels, Belgium
- Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
- Centre for Structural Biology, VIB, Pleinlaan 2, 1050 Brussels, Belgium
| | - Norman E Davey
- Division of Cancer Biology, The Institute of Cancer Research, 237 Fulham Road, London, SW3 6JB, UK
| | - Gustavo Parisi
- Dept. of Science and Technology, Universidad Nacional de Quilmes, Buenos Aires, Argentina
| | - Monika Fuxreiter
- Dept. of Biomedical Sciences, University of Padua, Via Ugo Bassi 58/B, Padua 35121, Italy
| | - Silvio C E Tosatto
- Dept. of Biomedical Sciences, University of Padua, Via Ugo Bassi 58/B, Padua 35121, Italy
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17
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Vicentini A, Masiello L, D’Amore S, Baldi E, Ghio S, Savastano S, Sanzo A, Di Matteo A, Seminari EM, Lenti MV, Bosio M, Petracci B, Frigerio L, Sabena A, Tavazzi G, Oltrona Visconti L, Rordorf R, Gnecchi M, Totaro R, Ferlini M, Greco A, Magrini G, Scelsi L, Acquaro M, Coccia M, Digiacomo S, Foglia D, Jeva F, Montalto C, Moschella M, Pezza L, Perlini S, Alfano C, Bonzano M, Briganti F, Crescenzi G, Falchi AG, Maggi E, Guarnone R, Guglielmana B, Martino IF, Pioli Di Marco MS, Pettenazza P, Quaglia F, Salinaro F, Speciale F, Zunino I, Sturniolo G, Bracchi F, Lago E, Corsico A, Piloni D, Accordino G, Burattini C, Di Sabatino A, Pellegrino I, Soriano S, Santacroce G, Parodi A, de Andreis FB, Bruno R, Zuccaro V, Moioli F, Dammassi V, Albertini R. QTc Interval and Mortality in a Population of SARS-2-CoV Infected Patients. Circ Arrhythm Electrophysiol 2020; 13:e008890. [DOI: 10.1161/circep.120.008890] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Alessandro Vicentini
- Cardiac Intensive Care Unit, Arrhythmia and Electrophysiology and Laboratory of Clinical and Experimental Cardiology (A.V., L.M., S.D., E.B., A.S., B.P., L.F., R.R.), Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Lucrezia Masiello
- Cardiac Intensive Care Unit, Arrhythmia and Electrophysiology and Laboratory of Clinical and Experimental Cardiology (A.V., L.M., S.D., E.B., A.S., B.P., L.F., R.R.), Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Molecular Medicine, Cardiology Unit (L.M., S.D., E.B.), University of Pavia, Italy
| | - Sabato D’Amore
- Cardiac Intensive Care Unit, Arrhythmia and Electrophysiology and Laboratory of Clinical and Experimental Cardiology (A.V., L.M., S.D., E.B., A.S., B.P., L.F., R.R.), Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Molecular Medicine, Cardiology Unit (L.M., S.D., E.B.), University of Pavia, Italy
| | - Enrico Baldi
- Cardiac Intensive Care Unit, Arrhythmia and Electrophysiology and Laboratory of Clinical and Experimental Cardiology (A.V., L.M., S.D., E.B., A.S., B.P., L.F., R.R.), Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Molecular Medicine, Cardiology Unit (L.M., S.D., E.B.), University of Pavia, Italy
| | - Stefano Ghio
- Division of Cardiology (S.G., S.S., L.O.V.), Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Simone Savastano
- Cardiac Intensive Care Unit, Arrhythmia and Electrophysiology and Laboratory of Clinical and Experimental Cardiology (A.V., L.M., S.D., E.B., A.S., B.P., L.F., R.R.), Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Antonio Sanzo
- Cardiac Intensive Care Unit, Arrhythmia and Electrophysiology and Laboratory of Clinical and Experimental Cardiology (A.V., L.M., S.D., E.B., A.S., B.P., L.F., R.R.), Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Emergency Department (A.S.), Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Internal Medicine (A.S.), University of Pavia, Italy
| | - Angela Di Matteo
- Division of Infectious Disease (A.D.M., E.M.S.), Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Elena Maria Seminari
- Division of Infectious Disease (A.D.M., E.M.S.), Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Marco Vincenzo Lenti
- Department of Internal Medicine (M.V.L.), Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Matteo Bosio
- Division of Respiratory Diseases (M.B.), Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Barbara Petracci
- Cardiac Intensive Care Unit, Arrhythmia and Electrophysiology and Laboratory of Clinical and Experimental Cardiology (A.V., L.M., S.D., E.B., A.S., B.P., L.F., R.R.), Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Laura Frigerio
- Cardiac Intensive Care Unit, Arrhythmia and Electrophysiology and Laboratory of Clinical and Experimental Cardiology (A.V., L.M., S.D., E.B., A.S., B.P., L.F., R.R.), Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Anna Sabena
- Cardiac Intensive Care Unit, Arrhythmia and Electrophysiology and Laboratory of Clinical and Experimental Cardiology (A.V., L.M., S.D., E.B., A.S., B.P., L.F., R.R.), Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Guido Tavazzi
- Anaesthesia and Intensive Care (G.T.), Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, Unit of Anesthesia and Intensive Care (G.T.), University of Pavia, Italy
| | - Luigi Oltrona Visconti
- Cardiac Intensive Care Unit, Arrhythmia and Electrophysiology and Laboratory of Clinical and Experimental Cardiology (A.V., L.M., S.D., E.B., A.S., B.P., L.F., R.R.), Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
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Quaglia F, Hatos A, Piovesan D, Tosatto SCE. Exploring Manually Curated Annotations of Intrinsically Disordered Proteins with DisProt. ACTA ACUST UNITED AC 2020; 72:e107. [PMID: 33017101 DOI: 10.1002/cpbi.107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
DisProt is the major repository of manually curated data for intrinsically disordered proteins collected from the literature. Although lacking a stable tertiary structure under physiological conditions, intrinsically disordered proteins carry out a plethora of biological functions, some of them directly arising from their flexible nature. A growing number of scientific studies have been published during the last few decades in an effort to shed light on their unstructured state, their binding modes, and their functions. DisProt makes use of a team of expert biocurators to provide up-to-date annotations of intrinsically disordered proteins from the literature, making them available to the scientific community. Here we present a comprehensive description on how to use DisProt in different contexts and provide a detailed explanation of how to explore and interpret manually curated annotations of intrinsically disordered proteins. We describe how to search DisProt annotations, using both the web interface and the API for programmatic access. Finally, we explain how to visualize and interpret a DisProt entry, p53, a widely studied protein characterized by the presence of unstructured N-terminal and C-terminal regions. © 2020 Wiley Periodicals LLC. Basic Protocol 1: Performing a search in DisProt Support Protocol 1: Downloading options Support Protocol 2: Programmatic access with DisProt REST API Basic Protocol 2: Visualizing and interpreting DisProt entries: the p53 use case Basic Protocol 3: Providing feedback and submitting new intrinsic disorder-related data.
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Affiliation(s)
- Federica Quaglia
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - András Hatos
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Damiano Piovesan
- Department of Biomedical Sciences, University of Padova, Padova, Italy
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19
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Monzon AM, Necci M, Quaglia F, Walsh I, Zanotti G, Piovesan D, Tosatto SCE. Experimentally Determined Long Intrinsically Disordered Protein Regions Are Now Abundant in the Protein Data Bank. Int J Mol Sci 2020; 21:ijms21124496. [PMID: 32599863 PMCID: PMC7349999 DOI: 10.3390/ijms21124496] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/18/2020] [Accepted: 06/19/2020] [Indexed: 01/12/2023] Open
Abstract
Intrinsically disordered protein regions are commonly defined from missing electron density in X-ray structures. Experimental evidence for long disorder regions (LDRs) of at least 30 residues was so far limited to manually curated proteins. Here, we describe a comprehensive and large-scale analysis of experimental LDRs for 3133 unique proteins, demonstrating an increasing coverage of intrinsic disorder in the Protein Data Bank (PDB) in the last decade. The results suggest that long missing residue regions are a good quality source to annotate intrinsically disordered regions and perform functional analysis in large data sets. The consensus approach used to define LDRs allows to evaluate context dependent disorder and provide a common definition at the protein level.
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Affiliation(s)
- Alexander Miguel Monzon
- Department of Biomedical Sciences, University of Padua, 35131 Padua, Italy; (A.M.M.); (M.N.); (F.Q.); (G.Z.)
| | - Marco Necci
- Department of Biomedical Sciences, University of Padua, 35131 Padua, Italy; (A.M.M.); (M.N.); (F.Q.); (G.Z.)
| | - Federica Quaglia
- Department of Biomedical Sciences, University of Padua, 35131 Padua, Italy; (A.M.M.); (M.N.); (F.Q.); (G.Z.)
| | - Ian Walsh
- Bioprocessing Technology Institute, A*STAR, Singapore 138668, Singapore;
| | - Giuseppe Zanotti
- Department of Biomedical Sciences, University of Padua, 35131 Padua, Italy; (A.M.M.); (M.N.); (F.Q.); (G.Z.)
| | - Damiano Piovesan
- Department of Biomedical Sciences, University of Padua, 35131 Padua, Italy; (A.M.M.); (M.N.); (F.Q.); (G.Z.)
- Correspondence: (D.P.); (S.C.E.T.)
| | - Silvio C. E. Tosatto
- Department of Biomedical Sciences, University of Padua, 35131 Padua, Italy; (A.M.M.); (M.N.); (F.Q.); (G.Z.)
- Correspondence: (D.P.); (S.C.E.T.)
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20
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Piovesan D, Hatos A, Minervini G, Quaglia F, Monzon AM, Tosatto SCE. Assessing predictors for new post translational modification sites: A case study on hydroxylation. PLoS Comput Biol 2020; 16:e1007967. [PMID: 32569263 PMCID: PMC7332089 DOI: 10.1371/journal.pcbi.1007967] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 07/02/2020] [Accepted: 05/19/2020] [Indexed: 12/15/2022] Open
Abstract
Post-translational modification (PTM) sites have become popular for predictor development. However, with the exception of phosphorylation and a handful of other examples, PTMs suffer from a limited number of available training examples and sparsity in protein sequences. Here, proline hydroxylation is taken as an example to compare different methods and evaluate their performance on new experimentally determined sites. As a guide for effective experimental design, predictors require both high specificity and sensitivity. However, the self-reported performance may often not be indicative of prediction quality and detection of new sites is not guaranteed. We have benchmarked seven published hydroxylation site predictors on two newly constructed independent datasets. The self-reported performance is found to widely overestimate the real accuracy measured on independent datasets. No predictor performs better than random on new examples, indicating the refined models do not sufficiently generalize to detect new sites. The number of false positives is high and precision low, in particular for non-collagen proteins whose motifs are not conserved. As hydroxylation site predictors do not generalize for new data, caution is advised when using PTM predictors in the absence of independent evaluations, in particular for highly specific sites involved in signalling. Machine learning methods are extensively used by biologists to design and interpret experiments. Predictors which take the only sequence as input are of particular interest due to the large amount of available sequence data and high self-reported performance. In this work, we evaluated post-translational modification (PTM) predictors for hydroxylation sites and found that they perform no better than random, in strong contrast to performances reported in their original publications. PTMs are chemical amino acid alterations providing the cell with conditional mechanisms to fine tune protein function, regulating complex biological processes such as signalling and cell cycle. Hydroxylation sites are a good PTM test case due to the availability of a range of predictors and an abundance of newly experimentally detected modification sites. Poor performances in our results highlight the overlooked problem of predicting PTMs when best practices are not followed and training data are likely incomplete. Experimentalists should be careful when using PTM predictors blindly and more independent assessments are needed to establish their usefulness in practice.
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Affiliation(s)
- Damiano Piovesan
- Department of Biomedical Sciences, University of Padua, Padua, Italy
- * E-mail:
| | - Andras Hatos
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | | | - Federica Quaglia
- Department of Biomedical Sciences, University of Padua, Padua, Italy
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21
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Hatos A, Hajdu-Soltész B, Monzon AM, Palopoli N, Álvarez L, Aykac-Fas B, Bassot C, Benítez GI, Bevilacqua M, Chasapi A, Chemes L, Davey NE, Davidović R, Dunker AK, Elofsson A, Gobeill J, Foutel NSG, Sudha G, Guharoy M, Horvath T, Iglesias V, Kajava AV, Kovacs OP, Lamb J, Lambrughi M, Lazar T, Leclercq JY, Leonardi E, Macedo-Ribeiro S, Macossay-Castillo M, Maiani E, Manso JA, Marino-Buslje C, Martínez-Pérez E, Mészáros B, Mičetić I, Minervini G, Murvai N, Necci M, Ouzounis CA, Pajkos M, Paladin L, Pancsa R, Papaleo E, Parisi G, Pasche E, Barbosa Pereira PJ, Promponas VJ, Pujols J, Quaglia F, Ruch P, Salvatore M, Schad E, Szabo B, Szaniszló T, Tamana S, Tantos A, Veljkovic N, Ventura S, Vranken W, Dosztányi Z, Tompa P, Tosatto SCE, Piovesan D. DisProt: intrinsic protein disorder annotation in 2020. Nucleic Acids Res 2020; 48:D269-D276. [PMID: 31713636 PMCID: PMC7145575 DOI: 10.1093/nar/gkz975] [Citation(s) in RCA: 98] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 10/11/2019] [Accepted: 10/12/2019] [Indexed: 11/29/2022] Open
Abstract
The Database of Protein Disorder (DisProt, URL: https://disprot.org) provides manually curated annotations of intrinsically disordered proteins from the literature. Here we report recent developments with DisProt (version 8), including the doubling of protein entries, a new disorder ontology, improvements of the annotation format and a completely new website. The website includes a redesigned graphical interface, a better search engine, a clearer API for programmatic access and a new annotation interface that integrates text mining technologies. The new entry format provides a greater flexibility, simplifies maintenance and allows the capture of more information from the literature. The new disorder ontology has been formalized and made interoperable by adopting the OWL format, as well as its structure and term definitions have been improved. The new annotation interface has made the curation process faster and more effective. We recently showed that new DisProt annotations can be effectively used to train and validate disorder predictors. We believe the growth of DisProt will accelerate, contributing to the improvement of function and disorder predictors and therefore to illuminate the ‘dark’ proteome.
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Affiliation(s)
- András Hatos
- Department of Biomedical Sciences, University of Padova, Padova 35121, Italy
| | - Borbála Hajdu-Soltész
- MTA-ELTE Lendület Bioinformatics Research Group, Department of Biochemistry, Eötvös Loránd University, Budapest 1117, Hungary
| | - Alexander M Monzon
- Department of Biomedical Sciences, University of Padova, Padova 35121, Italy
| | - Nicolas Palopoli
- Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes - CONICET, Bernal, Buenos Aires B1876BXD, Argentina
| | - Lucía Álvarez
- Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Biotecnológicas IIBIO, Universidad Nacional de San Martín, San Martín, Buenos Aires, Argentina
| | - Burcu Aykac-Fas
- Computational Biology Laboratory, Danish Cancer Society Research Center, Copenhagen DK-2100, Denmark
| | - Claudio Bassot
- Department of Biochemistry and Biophysics and Science for Life Laboratory, Stockholm University, Box 1031, Solna 17121, Sweden
| | - Guillermo I Benítez
- Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes - CONICET, Bernal, Buenos Aires B1876BXD, Argentina
| | - Martina Bevilacqua
- Department of Biomedical Sciences, University of Padova, Padova 35121, Italy
| | - Anastasia Chasapi
- Biological Computation & Process Laboratory, Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas, Thessalonica GR-57500, Greece
| | - Lucia Chemes
- Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Biotecnológicas IIBIO, Universidad Nacional de San Martín, San Martín, Buenos Aires, Argentina.,Departamento de Fisiología y Biología Molecular y Celular (DFBMC), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Norman E Davey
- Division of Cancer Biology, The Institute of Cancer Research, Chelsea, London SW3 6BJ, UK
| | - Radoslav Davidović
- Laboratory for Bioinformatics and Computational Chemistry, Institute of Nuclear Sciences Vinca, University of Belgrade, Belgrade 11001, Serbia
| | - A Keith Dunker
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, IN 46202, USA
| | - Arne Elofsson
- Department of Biochemistry and Biophysics and Science for Life Laboratory, Stockholm University, Box 1031, Solna 17121, Sweden
| | - Julien Gobeill
- Swiss Institute of Bioinformatics and HES-SO \ HEG, Geneva 1200, Switzerland
| | - Nicolás S González Foutel
- Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Biotecnológicas IIBIO, Universidad Nacional de San Martín, San Martín, Buenos Aires, Argentina
| | - Govindarajan Sudha
- Department of Biochemistry and Biophysics and Science for Life Laboratory, Stockholm University, Box 1031, Solna 17121, Sweden
| | - Mainak Guharoy
- Structural Biology Brussels, Vrije Universiteit Brussel (VUB), Brussels 1050, Belgium.,VIB-VUB Center for Structural Biology, Flanders Institute for Biotechnology (VIB), Brussels 1050, Belgium
| | - Tamas Horvath
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest H-1117, Hungary
| | - Valentin Iglesias
- Departament de Bioquímica i Biologia Molecular and Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Bellaterra 08193, Spain
| | - Andrey V Kajava
- Centre de Recherche en Biologie cellulaire de Montpellier (CRBM), UMR 5237 CNRS, Université Montpellier, Montpellier 34293, France.,Institut de Biologie Computationnelle(IBC), Montpellier 34095, France
| | - Orsolya P Kovacs
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest H-1117, Hungary
| | - John Lamb
- Department of Biochemistry and Biophysics and Science for Life Laboratory, Stockholm University, Box 1031, Solna 17121, Sweden
| | - Matteo Lambrughi
- Computational Biology Laboratory, Danish Cancer Society Research Center, Copenhagen DK-2100, Denmark
| | - Tamas Lazar
- Structural Biology Brussels, Vrije Universiteit Brussel (VUB), Brussels 1050, Belgium.,VIB-VUB Center for Structural Biology, Flanders Institute for Biotechnology (VIB), Brussels 1050, Belgium
| | - Jeremy Y Leclercq
- Centre de Recherche en Biologie cellulaire de Montpellier (CRBM), UMR 5237 CNRS, Université Montpellier, Montpellier 34293, France
| | - Emanuela Leonardi
- Department of Woman and Child Health, University of Padova, Padova 35127, Italy.,Fondazione Istituto di Ricerca Pediatrica (IRP), Città della Speranza, Padova 35127, Italy
| | - Sandra Macedo-Ribeiro
- Instituto de Biologia Molecular e Celular (IBMC) and Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto 4200-135, Portugal
| | - Mauricio Macossay-Castillo
- Structural Biology Brussels, Vrije Universiteit Brussel (VUB), Brussels 1050, Belgium.,VIB-VUB Center for Structural Biology, Flanders Institute for Biotechnology (VIB), Brussels 1050, Belgium
| | - Emiliano Maiani
- Computational Biology Laboratory, Danish Cancer Society Research Center, Copenhagen DK-2100, Denmark
| | - José A Manso
- Instituto de Biologia Molecular e Celular (IBMC) and Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto 4200-135, Portugal
| | - Cristina Marino-Buslje
- Bioinformatics Unit. Fundación Instituto Leloir, Ciudad de Buenos Aires C1405BWE, Argentina
| | | | - Bálint Mészáros
- MTA-ELTE Lendület Bioinformatics Research Group, Department of Biochemistry, Eötvös Loránd University, Budapest 1117, Hungary
| | - Ivan Mičetić
- Department of Biomedical Sciences, University of Padova, Padova 35121, Italy
| | - Giovanni Minervini
- Department of Biomedical Sciences, University of Padova, Padova 35121, Italy
| | - Nikoletta Murvai
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest H-1117, Hungary
| | - Marco Necci
- Department of Biomedical Sciences, University of Padova, Padova 35121, Italy
| | - Christos A Ouzounis
- Biological Computation & Process Laboratory, Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas, Thessalonica GR-57500, Greece
| | - Mátyás Pajkos
- MTA-ELTE Lendület Bioinformatics Research Group, Department of Biochemistry, Eötvös Loránd University, Budapest 1117, Hungary
| | - Lisanna Paladin
- Department of Biomedical Sciences, University of Padova, Padova 35121, Italy
| | - Rita Pancsa
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest H-1117, Hungary
| | - Elena Papaleo
- Computational Biology Laboratory, Danish Cancer Society Research Center, Copenhagen DK-2100, Denmark.,Translational Disease Systems Biology, Faculty of Health and Medical Sciences, Novo Nordisk Foundation Center for Protein Research University of Copenhagen, Copenhagen DK-2200, Denmark
| | - Gustavo Parisi
- Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes - CONICET, Bernal, Buenos Aires B1876BXD, Argentina
| | - Emilie Pasche
- Swiss Institute of Bioinformatics and HES-SO \ HEG, Geneva 1200, Switzerland
| | - Pedro J Barbosa Pereira
- Instituto de Biologia Molecular e Celular (IBMC) and Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto 4200-135, Portugal
| | - Vasilis J Promponas
- Bioinformatics Research Laboratory, Department of Biological Sciences, University of Cyprus, Nicosia, CY 1678, Cyprus
| | - Jordi Pujols
- Departament de Bioquímica i Biologia Molecular and Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Bellaterra 08193, Spain
| | - Federica Quaglia
- Department of Biomedical Sciences, University of Padova, Padova 35121, Italy
| | - Patrick Ruch
- Swiss Institute of Bioinformatics and HES-SO \ HEG, Geneva 1200, Switzerland
| | - Marco Salvatore
- Department of Biochemistry and Biophysics and Science for Life Laboratory, Stockholm University, Box 1031, Solna 17121, Sweden
| | - Eva Schad
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest H-1117, Hungary
| | - Beata Szabo
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest H-1117, Hungary
| | - Tamás Szaniszló
- MTA-ELTE Lendület Bioinformatics Research Group, Department of Biochemistry, Eötvös Loránd University, Budapest 1117, Hungary
| | - Stella Tamana
- Bioinformatics Research Laboratory, Department of Biological Sciences, University of Cyprus, Nicosia, CY 1678, Cyprus
| | - Agnes Tantos
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest H-1117, Hungary
| | - Nevena Veljkovic
- Laboratory for Bioinformatics and Computational Chemistry, Institute of Nuclear Sciences Vinca, University of Belgrade, Belgrade 11001, Serbia
| | - Salvador Ventura
- Departament de Bioquímica i Biologia Molecular and Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Bellaterra 08193, Spain
| | - Wim Vranken
- Structural Biology Brussels, Vrije Universiteit Brussel (VUB), Brussels 1050, Belgium.,VIB-VUB Center for Structural Biology, Flanders Institute for Biotechnology (VIB), Brussels 1050, Belgium.,Interuniversity Institute of Bioinformatics in Brussels (IB2), ULB-VUB, Brussels 1050, Belgium
| | - Zsuzsanna Dosztányi
- MTA-ELTE Lendület Bioinformatics Research Group, Department of Biochemistry, Eötvös Loránd University, Budapest 1117, Hungary
| | - Peter Tompa
- Structural Biology Brussels, Vrije Universiteit Brussel (VUB), Brussels 1050, Belgium.,VIB-VUB Center for Structural Biology, Flanders Institute for Biotechnology (VIB), Brussels 1050, Belgium.,Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest H-1117, Hungary
| | - Silvio C E Tosatto
- Department of Biomedical Sciences, University of Padova, Padova 35121, Italy.,CNR Institute of Neurosceince, Padova 35121, Italy
| | - Damiano Piovesan
- Department of Biomedical Sciences, University of Padova, Padova 35121, Italy
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22
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Minervini G, Quaglia F, Tabaro F, Tosatto SCE. Insights into the molecular features of the von Hippel-Lindau-like protein. Amino Acids 2019; 51:1461-1474. [PMID: 31485743 DOI: 10.1007/s00726-019-02781-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 02/11/2019] [Accepted: 08/28/2019] [Indexed: 12/19/2022]
Abstract
We present an in silico characterization of the von Hippel-Lindau-like protein (VLP), the only known human paralog of the von Hippel-Lindau tumor suppressor protein (pVHL). Phylogenetic investigation showed VLP to be mostly conserved in upper mammals and specifically expressed in brain and testis. Structural analysis and molecular dynamics simulations show VLP to be very similar to pVHL three-dimensional organization and binding dynamics. In particular, conservation of elements at the protein interfaces suggests VLP to be a functional pVHL homolog potentially possessing multiple functions beyond HIF-1α-dependent binding activity. Our findings show that VLP may share at least seven interactors with pVHL, suggesting novel functional roles for this understudied human protein. These may occur at precise hypoxia levels where functional overlap with pVHL may permit a finer modulation of pVHL functions.
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Affiliation(s)
- Giovanni Minervini
- Department of Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121, Padua, Italy
| | - Federica Quaglia
- Department of Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121, Padua, Italy
| | - Francesco Tabaro
- Department of Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121, Padua, Italy.,Institute of Biosciences and Medical Technology, Tampere, Finland
| | - Silvio C E Tosatto
- Department of Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121, Padua, Italy. .,CNR Institute of Neuroscience, Padua, Italy.
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23
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Berardinelli L, Dallatana R, Beretta C, Raiteri M, Tonello G, Quaglia F, Vegeto A. Pregnancy in kidney recipients under cyclosporine. Transpl Int 2018. [DOI: 10.1111/tri.1992.5.s1.480] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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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24
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Ungaro F, Catanzano O, d'Angelo I, Diaz-Gomez L, Concheiro A, Miro A, Alvarez-Lorenzo C, Quaglia F. Microparticle-embedded fibroin/alginate beads for prolonged local release of simvastatin hydroxyacid to mesenchymal stem cells. Carbohydr Polym 2017; 175:645-653. [PMID: 28917913 DOI: 10.1016/j.carbpol.2017.08.045] [Citation(s) in RCA: 7] [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: 04/28/2017] [Revised: 07/31/2017] [Accepted: 08/09/2017] [Indexed: 12/21/2022]
Abstract
In the present work, we propose silk fibroin/alginate (SF/Alg) beads embedding simvastatin-loaded biodegradable microparticles as a versatile platform capable of tuning SVA release and in so doing osteogenic effects. In a first part of the study, microparticles of poly(lactic-co-glycolic) acid incorporating simvastatin either as lactone (SVL) or as hydroxyacid form (SVA) were prepared by spray-drying. While SVA-loaded microparticles released the drug in three days, long-term release of SVA could be obtained from SVL-loaded microparticles. In this latter case, SVL was promptly transformed to the osteogenic active SVA during release. When tested on mesenchymal stem cells, a time- and dose-dependent effect of SVL-loaded microparticles on cell proliferation and alkaline phosphatase (ALP) activity was found. Thereafter, SVL-loaded microparticles were embedded in SF/Alg beads to limit the initial simvastatin burst and to achieve easier implantation as well. Microparticle-embedded beads showed no cytotoxicity while ALP activity increased. If correctly exploited, the developed system may be suitable as osteogenic polymer scaffolds releasing correct amount of the drug locally for long time-frames.
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Affiliation(s)
- F Ungaro
- Drug Delivery Laboratory, Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy
| | - O Catanzano
- Drug Delivery Laboratory, Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy
| | - I d'Angelo
- Di.S.T.A.B.i.F., University of Campania "Luigi Vanvitelli", Via Vivaldi 43, 81100 Caserta, Italy
| | - L Diaz-Gomez
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, R+D Pharma Group (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - A Concheiro
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, R+D Pharma Group (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - A Miro
- Drug Delivery Laboratory, Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy.
| | - C Alvarez-Lorenzo
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, R+D Pharma Group (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - F Quaglia
- Drug Delivery Laboratory, Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy
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25
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Abstract
Leukocytosis is regarded as a reliable marker of a serious disorder requiring hospitalization. However, leukocytosis often disappears once the patient is admitted to a medical ward; differential diagnosis of leukocytosis is often overlooked in the busy Emergency Room (ER) routine. We retrospectively evaluated the clinical records of 565 consecutive patients admitted to the Department of Internal Medicine (DIM) after examination in ER. Mean leukocyte count was 11.4×109/L in ER and 10.1×109/L in DIM (P<0.001). Leukocytosis was found in 53.1% of patients in ER, but in 33% of these it was no longer evident on the following day, unrelated to baseline white blood cells (WBC) count, age, sex, diagnosis, C-reactive protein level and early antibiotic treatment. A reduction in WBC count larger than 40% from baseline occurred in 13.6% of all subjects, and in 31.7% of those with transient leukocytosis. Leukocytosis in ER is frequent, but it is often transient and not associated with an infectious cause. Other causes, including psychological stress caused by the ER access itself, should be considered in the differential diagnosis.
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26
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Perrone T, Quaglia F. Lung US features of severe interstitial pneumonia: case report and review of the literature. J Ultrasound 2017; 20:247-249. [PMID: 28900526 DOI: 10.1007/s40477-017-0241-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 11/05/2016] [Accepted: 02/02/2017] [Indexed: 10/20/2022] Open
Abstract
BACKGROUND Chlamydia pneumonia is reported to account for a relatively large number of cases of CAP. In elderly patients in particular, the clinical presentation can be a severe form of diffuse interstitial pneumonia. The chest X-ray presentation is aspecific. Lung US can show a typical pattern of diffuse interstitial lung syndrome; in some cases, like the present one, the association of multiple B lines with a coarse and thickened pleural line points to a more likely diagnosis of interstitial pneumonia. CASE REPORT We present the case of an 87-year-old woman with severe interstitial chlamydial pneumonia, for whom lung US was very useful for directing diagnosis and for follow-up during therapy. CONCLUSIONS The use of lung US in the diagnosis of interstitial syndrome is likely to improve the care of patients in whom the diagnosis is a consideration; it offers better characterization than a chest X-ray and is free from CT radiation. Furthermore, the concept of using lung US for monitoring a patient is one of the major innovations that has emerged from recent studies.
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27
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Piovesan D, Tabaro F, Mičetić I, Necci M, Quaglia F, Oldfield CJ, Aspromonte MC, Davey NE, Davidović R, Dosztányi Z, Elofsson A, Gasparini A, Hatos A, Kajava AV, Kalmar L, Leonardi E, Lazar T, Macedo-Ribeiro S, Macossay-Castillo M, Meszaros A, Minervini G, Murvai N, Pujols J, Roche DB, Salladini E, Schad E, Schramm A, Szabo B, Tantos A, Tonello F, Tsirigos KD, Veljković N, Ventura S, Vranken W, Warholm P, Uversky VN, Dunker AK, Longhi S, Tompa P, Tosatto SCE. Corrigendum: DisProt 7.0: a major update of the database of disordered proteins. Nucleic Acids Res 2016; 45:D1123-D1124. [PMID: 27965415 PMCID: PMC5210598 DOI: 10.1093/nar/gkw1279] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Damiano Piovesan
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy
| | - Francesco Tabaro
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy.,Institute of Biosciences and Medical Technology, University of Tampere, Finland
| | - Ivan Mičetić
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy
| | - Marco Necci
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy
| | - Federica Quaglia
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy
| | - Christopher J Oldfield
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, 46202 Indianapolis, IN, USA
| | | | - Norman E Davey
- Conway Institute of Biomolecular & Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland.,Ireland UCD School of Medicine & Medical Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - Radoslav Davidović
- Centre for Multidisciplinary Research, Institute of Nuclear Sciences Vinca, University of Belgrade, 11001 Belgrade, Serbia
| | - Zsuzsanna Dosztányi
- MTA-ELTE Lendület Bioinformatics Research Group, Department of Biochemistry, Eötvös Loránd University, 1/c Pázmány Péter sétány, 1117 Budapest, Hungary.,Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7, H-1518 Budapest, Hungary
| | - Arne Elofsson
- Department of Biochemistry and Biophysics and Science for Life Laboratory, Stockholm University, Box 1031, 17121 Solna, Sweden
| | - Alessandra Gasparini
- Department of Woman and Child Health, University of Padova, I-35128 Padova, Italy
| | - András Hatos
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy.,Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7, H-1518 Budapest, Hungary
| | - Andrey V Kajava
- Centre de Recherche en Biologie cellulaire de Montpellier (CRBM), UMR 5237 CNRS, Université Montpellier 1919 Route de Mende, Cedex 5, Montpellier 34293, France.,Institut de Biologie Computationnelle (IBC), Montpellier 34095, France.,University ITMO, Institute of Bioengineering, St. Petersburg 197101, Russia
| | - Lajos Kalmar
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7, H-1518 Budapest, Hungary.,Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB3 0ES, UK
| | - Emanuela Leonardi
- Department of Woman and Child Health, University of Padova, I-35128 Padova, Italy
| | - Tamas Lazar
- Structural Biology Brussels, Vrije Universiteit Brussel (VUB), Brussels 1050, Belgium.,Structural Biology Research Center (SBRC), Flanders Institute for Biotechnology (VIB), Brussels 1050, Belgium
| | - Sandra Macedo-Ribeiro
- Biomolecular Structure and Function Group, Instituto de Biologia Molecular e Celular (IBMC) and Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, 4200-135 Porto, Portugal
| | - Mauricio Macossay-Castillo
- Structural Biology Brussels, Vrije Universiteit Brussel (VUB), Brussels 1050, Belgium.,Structural Biology Research Center (SBRC), Flanders Institute for Biotechnology (VIB), Brussels 1050, Belgium
| | - Attila Meszaros
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7, H-1518 Budapest, Hungary
| | - Giovanni Minervini
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy
| | - Nikoletta Murvai
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7, H-1518 Budapest, Hungary
| | - Jordi Pujols
- Departament de Bioquimica i Biologia Molecular and Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Bellaterra 08193, Spain
| | - Daniel B Roche
- Centre de Recherche en Biologie cellulaire de Montpellier (CRBM), UMR 5237 CNRS, Université Montpellier 1919 Route de Mende, Cedex 5, Montpellier 34293, France.,Institut de Biologie Computationnelle (IBC), Montpellier 34095, France
| | | | - Eva Schad
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7, H-1518 Budapest, Hungary
| | | | - Beata Szabo
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7, H-1518 Budapest, Hungary
| | - Agnes Tantos
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7, H-1518 Budapest, Hungary
| | - Fiorella Tonello
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy.,CNR Institute of Neurosceince, I-35121 Padova, Italy
| | - Konstantinos D Tsirigos
- Department of Biochemistry and Biophysics and Science for Life Laboratory, Stockholm University, Box 1031, 17121 Solna, Sweden
| | - Nevena Veljković
- Centre for Multidisciplinary Research, Institute of Nuclear Sciences Vinca, University of Belgrade, 11001 Belgrade, Serbia
| | - Salvador Ventura
- Departament de Bioquimica i Biologia Molecular and Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Bellaterra 08193, Spain
| | - Wim Vranken
- Structural Biology Brussels, Vrije Universiteit Brussel (VUB), Brussels 1050, Belgium.,Structural Biology Research Center (SBRC), Flanders Institute for Biotechnology (VIB), Brussels 1050, Belgium.,Interuniversity Institute of Bioinformatics in Brussels (IB2), ULB-VUB, Brussels 1050, Belgium
| | - Per Warholm
- Department of Biochemistry and Biophysics and Science for Life Laboratory, Stockholm University, Box 1031, 17121 Solna, Sweden
| | - Vladimir N Uversky
- Laboratory of Structural Dynamics, Stability and Folding of Proteins, Institute of Cytology, Russian Academy of Sciences, 194064 St. Petersburg, Russia.,Department of Molecular Medicine and USF Health Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
| | - A Keith Dunker
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, 46202 Indianapolis, IN, USA
| | - Sonia Longhi
- Aix-Marseille Univ, CNRS, AFMB, UMR 7257, Marseille, France
| | - Peter Tompa
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7, H-1518 Budapest, Hungary .,Structural Biology Brussels, Vrije Universiteit Brussel (VUB), Brussels 1050, Belgium.,Structural Biology Research Center (SBRC), Flanders Institute for Biotechnology (VIB), Brussels 1050, Belgium
| | - Silvio C E Tosatto
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy .,CNR Institute of Neurosceince, I-35121 Padova, Italy
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28
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Piovesan D, Tabaro F, Mičetić I, Necci M, Quaglia F, Oldfield CJ, Aspromonte MC, Davey NE, Davidović R, Dosztányi Z, Elofsson A, Gasparini A, Hatos A, Kajava AV, Kalmar L, Leonardi E, Lazar T, Macedo-Ribeiro S, Macossay-Castillo M, Meszaros A, Minervini G, Murvai N, Pujols J, Roche DB, Salladini E, Schad E, Schramm A, Szabo B, Tantos A, Tonello F, Tsirigos KD, Veljković N, Ventura S, Vranken W, Warholm P, Uversky VN, Dunker AK, Longhi S, Tompa P, Tosatto SCE. DisProt 7.0: a major update of the database of disordered proteins. Nucleic Acids Res 2016; 45:D219-D227. [PMID: 27899601 PMCID: PMC5210544 DOI: 10.1093/nar/gkw1056] [Citation(s) in RCA: 193] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 10/19/2016] [Accepted: 10/21/2016] [Indexed: 01/16/2023] Open
Abstract
The Database of Protein Disorder (DisProt, URL: www.disprot.org) has been significantly updated and upgraded since its last major renewal in 2007. The current release holds information on more than 800 entries of IDPs/IDRs, i.e. intrinsically disordered proteins or regions that exist and function without a well-defined three-dimensional structure. We have re-curated previous entries to purge DisProt from conflicting cases, and also upgraded the functional classification scheme to reflect continuous advance in the field in the past 10 years or so. We define IDPs as proteins that are disordered along their entire sequence, i.e. entirely lack structural elements, and IDRs as regions that are at least five consecutive residues without well-defined structure. We base our assessment of disorder strictly on experimental evidence, such as X-ray crystallography and nuclear magnetic resonance (primary techniques) and a broad range of other experimental approaches (secondary techniques). Confident and ambiguous annotations are highlighted separately. DisProt 7.0 presents classified knowledge regarding the experimental characterization and functional annotations of IDPs/IDRs, and is intended to provide an invaluable resource for the research community for a better understanding structural disorder and for developing better computational tools for studying disordered proteins.
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Affiliation(s)
- Damiano Piovesan
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy
| | - Francesco Tabaro
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy.,Institute of Biosciences and Medical Technology, University of Tampere, Finland
| | - Ivan Mičetić
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy
| | - Marco Necci
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy
| | - Federica Quaglia
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy
| | - Christopher J Oldfield
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, 46202 Indianapolis, IN, USA
| | | | - Norman E Davey
- Conway Institute of Biomolecular & Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland.,Ireland UCD School of Medicine & Medical Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - Radoslav Davidović
- Centre for Multidisciplinary Research, Institute of Nuclear Sciences Vinca, University of Belgrade, 11001 Belgrade, Serbia
| | - Zsuzsanna Dosztányi
- MTA-ELTE Lendület Bioinformatics Research Group, Department of Biochemistry, Eötvös Loránd University, 1/c Pázmány Péter sétány, 1117 Budapest, Hungary.,Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7,H-1518 Budapest, Hungary
| | - Arne Elofsson
- Department of Biochemistry and Biophysics and Science for Life Laboratory, Stockholm University, Box 1031, 17121 Solna, Sweden
| | - Alessandra Gasparini
- Department of Woman and Child Health, University of Padova, I-35128 Padova, Italy
| | - András Hatos
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy.,Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7,H-1518 Budapest, Hungary
| | - Andrey V Kajava
- Centre de Recherche en Biologie cellulaire de Montpellier (CRBM), UMR 5237 CNRS, Université Montpellier 1919 Route de Mende, Cedex 5, Montpellier 34293, France.,Institut de Biologie Computationnelle (IBC), Montpellier 34095, France.,University ITMO, Institute of Bioengineering, St. Petersburg 197101, Russia
| | - Lajos Kalmar
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7,H-1518 Budapest, Hungary.,Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB3 0ES, UK
| | - Emanuela Leonardi
- Department of Woman and Child Health, University of Padova, I-35128 Padova, Italy
| | - Tamas Lazar
- Structural Biology Brussels, Vrije Universiteit Brussel (VUB), Brussels 1050, Belgium.,Structural Biology Research Center (SBRC), Flanders Institute for Biotechnology (VIB), Brussels 1050, Belgium
| | - Sandra Macedo-Ribeiro
- Biomolecular Structure and Function Group, Instituto de Biologia Molecular e Celular (IBMC) and Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, 4200-135 Porto, Portugal
| | - Mauricio Macossay-Castillo
- Structural Biology Brussels, Vrije Universiteit Brussel (VUB), Brussels 1050, Belgium.,Structural Biology Research Center (SBRC), Flanders Institute for Biotechnology (VIB), Brussels 1050, Belgium
| | - Attila Meszaros
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7,H-1518 Budapest, Hungary
| | - Giovanni Minervini
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy
| | - Nikoletta Murvai
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7,H-1518 Budapest, Hungary
| | - Jordi Pujols
- Departament de Bioquimica i Biologia Molecular and Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Bellaterra 08193, Spain
| | - Daniel B Roche
- Centre de Recherche en Biologie cellulaire de Montpellier (CRBM), UMR 5237 CNRS, Université Montpellier 1919 Route de Mende, Cedex 5, Montpellier 34293, France.,Institut de Biologie Computationnelle (IBC), Montpellier 34095, France
| | | | - Eva Schad
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7,H-1518 Budapest, Hungary
| | | | - Beata Szabo
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7,H-1518 Budapest, Hungary
| | - Agnes Tantos
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7,H-1518 Budapest, Hungary
| | - Fiorella Tonello
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy.,CNR Institute of Neurosceince, I-35121 Padova, Italy
| | - Konstantinos D Tsirigos
- Department of Biochemistry and Biophysics and Science for Life Laboratory, Stockholm University, Box 1031, 17121 Solna, Sweden
| | - Nevena Veljković
- Centre for Multidisciplinary Research, Institute of Nuclear Sciences Vinca, University of Belgrade, 11001 Belgrade, Serbia
| | - Salvador Ventura
- Departament de Bioquimica i Biologia Molecular and Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Bellaterra 08193, Spain
| | - Wim Vranken
- Structural Biology Brussels, Vrije Universiteit Brussel (VUB), Brussels 1050, Belgium.,Structural Biology Research Center (SBRC), Flanders Institute for Biotechnology (VIB), Brussels 1050, Belgium.,Interuniversity Institute of Bioinformatics in Brussels (IB2), ULB-VUB, Brussels 1050, Belgium
| | - Per Warholm
- Department of Biochemistry and Biophysics and Science for Life Laboratory, Stockholm University, Box 1031, 17121 Solna, Sweden
| | - Vladimir N Uversky
- Laboratory of Structural Dynamics, Stability and Folding of Proteins, Institute of Cytology, Russian Academy of Sciences, 194064 St. Petersburg, Russia.,Department of Molecular Medicine and USF Health Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
| | - A Keith Dunker
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, 46202 Indianapolis, IN, USA
| | - Sonia Longhi
- Aix-Marseille Univ, CNRS, AFMB, UMR 7257, Marseille, France
| | - Peter Tompa
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 7,H-1518 Budapest, Hungary .,Structural Biology Brussels, Vrije Universiteit Brussel (VUB), Brussels 1050, Belgium.,Structural Biology Research Center (SBRC), Flanders Institute for Biotechnology (VIB), Brussels 1050, Belgium
| | - Silvio C E Tosatto
- Department of Biomedical Sciences, University of Padova, I-35121 Padova, Italy .,CNR Institute of Neurosceince, I-35121 Padova, Italy
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Donarini P, Ciravolo G, Quaglia F, Dinolfo M, Braga M, Rampinelli F. Retto-sigma endometriosis: transvaginal resection of rectum laparoassisted versus laparotomy resection. Eur J Obstet Gynecol Reprod Biol 2016. [DOI: 10.1016/j.ejogrb.2016.07.109] [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: 10/20/2022]
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Costabile G, d'Angelo I, d'Emmanuele di Villa Bianca R, Mitidieri E, Pompili B, Del Porto P, Leoni L, Visca P, Miro A, Quaglia F, Imperi F, Sorrentino R, Ungaro F. Development of inhalable hyaluronan/mannitol composite dry powders for flucytosine repositioning in local therapy of lung infections. J Control Release 2016; 238:80-91. [DOI: 10.1016/j.jconrel.2016.07.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Revised: 07/12/2016] [Accepted: 07/17/2016] [Indexed: 11/28/2022]
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Invernizzi R, Bastia R, Quaglia F. Pure red cell aplasia caused by parvovirus B19 in a heart transplant recipient. Clin Case Rep 2016; 4:870-1. [PMID: 27648265 PMCID: PMC5018591 DOI: 10.1002/ccr3.641] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 05/11/2016] [Accepted: 07/06/2016] [Indexed: 11/11/2022] Open
Abstract
A case of parvovirus B19-induced pure red cell aplasia occurring in a heart transplant recipient is reported. The diagnosis of this rare but clinically important complication can be suspected on the basis of the pathognomonic morphological features of the bone marrow.
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Affiliation(s)
- Rosangela Invernizzi
- Department of Internal Medicine IRCCS Policlinico San Matteo Foundation University of Pavia Pavia Italy
| | - Raffaella Bastia
- Department of Internal Medicine IRCCS Policlinico San Matteo Foundation University of Pavia Pavia Italy
| | - Federica Quaglia
- Department of Internal Medicine IRCCS Policlinico San Matteo Foundation University of Pavia Pavia Italy
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Minervini G, Quaglia F, Tosatto SCE. Computational analysis of prolyl hydroxylase domain-containing protein 2 (PHD2) mutations promoting polycythemia insurgence in humans. Sci Rep 2016; 6:18716. [PMID: 26754054 PMCID: PMC4709589 DOI: 10.1038/srep18716] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 11/06/2015] [Indexed: 12/18/2022] Open
Abstract
Idiopathic erythrocytosis is a rare disease characterized by an increase in red blood cell mass due to mutations in proteins of the oxygen-sensing pathway, such as prolyl hydroxylase 2 (PHD2). Here, we present a bioinformatics investigation of the pathological effect of twelve PHD2 mutations related to polycythemia insurgence. We show that few mutations impair the PHD2 catalytic site, while most localize to non-enzymatic regions. We also found that most mutations do not overlap the substrate recognition site, suggesting a novel PHD2 binding interface. After a structural analysis of both binding partners, we suggest that this novel interface is responsible for PHD2 interaction with the LIMD1 tumor suppressor.
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Affiliation(s)
- Giovanni Minervini
- Department of Biomedical Sciences and CRIBI Biotechnology Center, University of Padova, Viale G. Colombo 3, 35121, Padova, Italy
| | - Federica Quaglia
- Department of Biomedical Sciences and CRIBI Biotechnology Center, University of Padova, Viale G. Colombo 3, 35121, Padova, Italy
| | - Silvio C E Tosatto
- Department of Biomedical Sciences and CRIBI Biotechnology Center, University of Padova, Viale G. Colombo 3, 35121, Padova, Italy.,CNR Institute of Neuroscience, Viale G. Colombo 3, 35121, Padova, Italy
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33
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Invernizzi R, Quaglia F, Klersy C, Pagella F, Ornati F, Chu F, Matti E, Spinozzi G, Plumitallo S, Grignani P, Olivieri C, Bastia R, Bellistri F, Danesino C, Benazzo M, Balduini CL. Efficacy and safety of thalidomide for the treatment of severe recurrent epistaxis in hereditary haemorrhagic telangiectasia: results of a non-randomised, single-centre, phase 2 study. Lancet Haematol 2015; 2:e465-73. [PMID: 26686256 DOI: 10.1016/s2352-3026(15)00195-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 08/27/2015] [Accepted: 09/03/2015] [Indexed: 02/05/2023]
Abstract
BACKGROUND Hereditary haemorrhagic telangiectasia is a genetic disease that leads to multiregional angiodysplasia. Severe recurrent epistaxis is the most common presentation, frequently leading to severe anaemia. Several therapeutic approaches have been investigated, but they are mostly palliative and have had variable results. We aimed to assess the efficacy of thalidomide for the reduction of epistaxis in patients with hereditary haemorrhagic telangiectasia that is refractory to standard therapy. METHODS We recruited patients aged 17 years or older with hereditary haemorrhagic telangiectasia who had severe recurrent epistaxis refractory to minimally invasive surgical procedures into an open-label, phase 2, non-randomised, single-centre study at IRCCS Policlinico San Matteo Foundation (Pavia, Italy). We gave patients thalidomide at a starting dose of 50 mg/day orally. If they had no response, we increased the thalidomide dose by 50 mg/day increments every 4 weeks, until a response was seen, up to a maximum dose of 200 mg/day. After patients had achieved a response, they continued treatment for 8-16 additional weeks. The primary endpoint was the efficacy of thalidomide measured as the percentage of patients who had reductions of at least one grade in the frequency, intensity, or duration of epistaxis. We followed up patients each month to assess epistaxis severity score and transfusion need, and any adverse events were reported. We included all patients who received any study drug and who participated in at least one post-baseline assessment in the primary efficacy population. The safety population consisted of all patients who received any dose of study treatment. This trial is registered with ClinicalTrials.gov, number NCT01485224. FINDINGS Between Dec 1, 2011, and May 12, 2014, we enrolled 31 patients. Median follow-up was 15·9 months (IQR 10·1-22·3). Three (10%, 95% CI 2-26) patients had a complete response, with bleeding stopped, 28 (90%, 95% CI 74-98) patients had partial responses. Overall, all 31 (100%, 89-100) patients responded to therapy with a significant decrease in all epistaxis parameters (p<0·0001 for frequency, intensity, and duration). A response was achieved by 25 (81%) patients at 50 mg/day of thalidomide, five (16%) patients at 100 mg/day, and one (3%) patient at 150 mg/day. Patients had only non-serious, grade 1 adverse effects, the most common of which were constipation (21 patients), drowsiness (six patients), and peripheral oedema (eight patients). One patient died a month after the end of treatment, but this was not deemed to be related to treatment. INTERPRETATION Low-dose thalidomide seems to be safe and effective for the reduction of epistaxis in patients with hereditary haemorrhagic telangiectasia. Our findings should be validated by further studies with larger patient populations, longer follow-up, and that also assess the benefit for quality of life. FUNDING Telethon Foundation.
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Affiliation(s)
- Rosangela Invernizzi
- Department of Internal Medicine, University of Pavia, IRCCS Policlinico San Matteo Foundation, Pavia, Italy.
| | - Federica Quaglia
- Department of Internal Medicine, University of Pavia, IRCCS Policlinico San Matteo Foundation, Pavia, Italy
| | - Catherine Klersy
- Service of Biometry and Clinical Epidemiology, IRCCS Policlinico San Matteo Foundation, Pavia, Italy
| | - Fabio Pagella
- Department of Otorhinolaryngology, University of Pavia, IRCCS Policlinico San Matteo Foundation, Pavia, Italy
| | - Federica Ornati
- Department of Cardiology, University of Pavia, IRCCS Policlinico San Matteo Foundation, Pavia, Italy; Department of Molecular Medicine, General Biology, and Medical Genetics Unit, University of Pavia, Pavia, Italy
| | - Francesco Chu
- Department of Otorhinolaryngology, University of Pavia, IRCCS Policlinico San Matteo Foundation, Pavia, Italy
| | - Elina Matti
- Department of Otorhinolaryngology, University of Pavia, IRCCS Policlinico San Matteo Foundation, Pavia, Italy
| | - Giuseppe Spinozzi
- Department of Otorhinolaryngology, University of Pavia, IRCCS Policlinico San Matteo Foundation, Pavia, Italy
| | - Sara Plumitallo
- Department of Molecular Medicine, General Biology, and Medical Genetics Unit, University of Pavia, Pavia, Italy
| | - Pierangela Grignani
- Department of Legal Medicine and Public Health, University of Pavia, Pavia, Italy
| | - Carla Olivieri
- Department of Molecular Medicine, General Biology, and Medical Genetics Unit, University of Pavia, Pavia, Italy
| | - Raffaella Bastia
- Department of Internal Medicine, University of Pavia, IRCCS Policlinico San Matteo Foundation, Pavia, Italy
| | - Francesca Bellistri
- Department of Internal Medicine, University of Pavia, IRCCS Policlinico San Matteo Foundation, Pavia, Italy
| | - Cesare Danesino
- Department of Molecular Medicine, General Biology, and Medical Genetics Unit, University of Pavia, Pavia, Italy
| | - Marco Benazzo
- Department of Otorhinolaryngology, University of Pavia, IRCCS Policlinico San Matteo Foundation, Pavia, Italy
| | - Carlo L Balduini
- Department of Internal Medicine, University of Pavia, IRCCS Policlinico San Matteo Foundation, Pavia, Italy
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Minervini G, Quaglia F, Tosatto SCE. Insights into the proline hydroxylase (PHD) family, molecular evolution and its impact on human health. Biochimie 2015; 116:114-24. [PMID: 26187473 DOI: 10.1016/j.biochi.2015.07.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [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: 05/27/2015] [Accepted: 07/12/2015] [Indexed: 12/18/2022]
Abstract
PHDs (proline hydroxylases) are a small protein family found in all organisms, considered the central regulator of the molecular hypoxia response due to PHDs being completely inactivated under low oxygen concentration. At physiological oxygen concentration, PHDs drive the degradation of the HIF-1α (hypoxia-inducible factor 1-α), which is responsible for upregulating the expression of genes involved in the cellular response to hypoxia. Hypoxia is a common feature of most tumors, in particular during metastasis development. Indeed, cancer reacts by activating pathways promoting new blood vessel formation and activating strategies aimed to improve survival. In this scenario, the PHD family regulates the activation of HIF-1α and cell-cycle regulation. Several PHD mutations were found in cancer patients, underlining their importance for human health. Here, we propose a Bayesian model able to predict the pathological effect of human PHD mutations and their correlation with cancer outcome. The model was developed through an integrative in silico approach, where data collected from the literature has been coupled with sequence evolution and structural analysis. The model was used to assess 135 human PHD variants. Finally, bioinformatics characterization was used to demonstrate how few amino acid changes are able to explain the functional specialization of PHD family members and their physiological role in human health.
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Affiliation(s)
- Giovanni Minervini
- Department of Biomedical Sciences, University of Padua, Viale G. Colombo 3, 35121, Padova, Italy
| | - Federica Quaglia
- Department of Biomedical Sciences, University of Padua, Viale G. Colombo 3, 35121, Padova, Italy
| | - Silvio C E Tosatto
- Department of Biomedical Sciences, University of Padua, Viale G. Colombo 3, 35121, Padova, Italy.
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Catanzano O, D'Esposito V, Acierno S, Ambrosio MR, De Caro C, Avagliano C, Russo P, Russo R, Miro A, Ungaro F, Calignano A, Formisano P, Quaglia F. Alginate-hyaluronan composite hydrogels accelerate wound healing process. Carbohydr Polym 2015; 131:407-14. [PMID: 26256201 DOI: 10.1016/j.carbpol.2015.05.081] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Revised: 05/14/2015] [Accepted: 05/15/2015] [Indexed: 12/20/2022]
Abstract
In this paper we propose polysaccharide hydrogels combining alginate (ALG) and hyaluronan (HA) as biofunctional platform for dermal wound repair. Hydrogels produced by internal gelation were homogeneous and easy to handle. Rheological evaluation of gelation kinetics of ALG/HA mixtures at different ratios allowed understanding the HA effect on ALG cross-linking process. Disk-shaped hydrogels, at different ALG/HA ratio, were characterized for morphology, homogeneity and mechanical properties. Results suggest that, although the presence of HA does significantly slow down gelation kinetics, the concentration of cross-links reached at the end of gelation is scarcely affected. The in vitro activity of ALG/HA dressings was tested on adipose derived multipotent adult stem cells (Ad-MSC) and an immortalized keratinocyte cell line (HaCaT). Hydrogels did not interfere with cell viability in both cells lines, but significantly promoted gap closure in a scratch assay at early (1 day) and late (5 days) stages as compared to hydrogels made of ALG alone (p<0.01 and 0.001 for Ad-MSC and HaCaT, respectively). In vivo wound healing studies, conducted on a rat model of excised wound indicated that after 5 days ALG/HA hydrogels significantly promoted wound closure as compared to ALG ones (p<0.001). Overall results demonstrate that the integration of HA in a physically cross-linked ALG hydrogel can be a versatile strategy to promote wound healing that can be easily translated in a clinical setting.
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Affiliation(s)
- O Catanzano
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy
| | - V D'Esposito
- Department of Translational Medical Sciences, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy
| | - S Acierno
- Department of Engineering, University of Sannio, Piazza Roma 21, 82100 Benevento, Italy
| | - M R Ambrosio
- Department of Translational Medical Sciences, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy
| | - C De Caro
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy
| | - C Avagliano
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy
| | - P Russo
- Institute for Polymers, Composites and Biomaterials, National Research Council, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy
| | - R Russo
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy
| | - A Miro
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy
| | - F Ungaro
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy
| | - A Calignano
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy
| | - P Formisano
- Department of Translational Medical Sciences, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy
| | - F Quaglia
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy.
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Catanzano O, Straccia M, Miro A, Ungaro F, Romano I, Mazzarella G, Santagata G, Quaglia F, Laurienzo P, Malinconico M. Spray-by-spray in situ cross-linking alginate hydrogels delivering a tea tree oil microemulsion. Eur J Pharm Sci 2015; 66:20-8. [DOI: 10.1016/j.ejps.2014.09.018] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 09/19/2014] [Accepted: 09/21/2014] [Indexed: 11/29/2022]
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Abstract
Key Clinical Message A case of feverish benign neutropenia occurring in a diabetic patient receiving pregabalin for peripheral neuropathy is reported. Although pregabalin-induced neutropenia is very rare, it is important to keep in mind that this drug like other anticonvulsants used for neuropathic pain, can cause severe neutropenia.
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Affiliation(s)
- Rosangela Invernizzi
- Department of Internal Medicine, IRCCS Policlinico San Matteo Foundation and University of Pavia Pavia, Italy
| | - Chiara Ambaglio
- Department of Internal Medicine, IRCCS Policlinico San Matteo Foundation and University of Pavia Pavia, Italy
| | - Federica Quaglia
- Department of Internal Medicine, IRCCS Policlinico San Matteo Foundation and University of Pavia Pavia, Italy
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Della Porta MG, Travaglino E, Boveri E, Ponzoni M, Malcovati L, Papaemmanuil E, Rigolin GM, Pascutto C, Croci G, Gianelli U, Milani R, Ambaglio I, Elena C, Ubezio M, Da Via’ MC, Bono E, Pietra D, Quaglia F, Bastia R, Ferretti V, Cuneo A, Morra E, Campbell PJ, Orazi A, Invernizzi R, Cazzola M. Minimal morphological criteria for defining bone marrow dysplasia: a basis for clinical implementation of WHO classification of myelodysplastic syndromes. Leukemia 2014; 29:66-75. [DOI: 10.1038/leu.2014.161] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 04/19/2014] [Accepted: 05/07/2014] [Indexed: 02/08/2023]
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Conte C, Ungaro F, Maglio G, Tirino P, Siracusano G, Sciortino M, Leone N, Palma G, Barbieri A, Arra C, Mazzaglia A, Quaglia F. Biodegradable core-shell nanoassemblies for the delivery of docetaxel and Zn(II)-phthalocyanine inspired by combination therapy for cancer. J Control Release 2013; 167:40-52. [DOI: 10.1016/j.jconrel.2012.12.026] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Revised: 12/13/2012] [Accepted: 12/18/2012] [Indexed: 01/05/2023]
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40
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Pose M, Gleichgerrcht E, Lopez P, Torralva T, Torrente F, Quaglia F, Cetkovich M, Manes F. Personality in Frontotemporal Dementia (P07.173). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p07.173] [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: 11/15/2022] Open
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41
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Migliucci A, Di Fraja D, Sarno L, Acampora E, Mazzarelli LL, Quaglia F, Mallia Milanes G, Buffolano W, Napolitano R, Simioli S, Maruotti GM, Martinelli P. Prenatal diagnosis of congenital rubella infection and ultrasonography: a preliminary study. Minerva Ginecol 2011; 63:485-489. [PMID: 22036752] [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] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
AIM The aim of this study was to analyze the role of ultrasonography in the prenatal diagnosis of women with confirmed rubella infection in pregnancy. METHODS We performed a retrospective, population-based study on 175 women referred to our Centre of Infectious Disease in Pregnancy of AOU Federico II for rubella infection, in the period between January 1999 and December 2009. In confirmed cases of infection we performed periodic ultrasonographic assessment of fetal anatomy looking for prenatal findings of rubeovirus infection. Neonatal outcomes were collected. RESULTS Among 175 women, 48 (27.4%) were confirmed cases, in 83 (47.4%) cases rubella infection remain suspected. The remaining 44 (25.1%) women were excluded to having rubella infection in pregnancy. No defined probable cases were found. Among children born to mother with confirmed rubella infection, 9 (18.7%) resulted infected by rubella virus. In particular 6 newborns (66% of the affected) were asymptomatic, two babies showed incomplete congenital rubella syndrome (CRS), due to the presence of deafness in the absence of other congenital abnormalities without showing any USG findings. Only one baby showed a complete CRS: USG prenatal rubella infection findings were IUGR, polydramnios, cardiomegaly, defects of atrial septum, hepatosplenomegaly, ascites, echogenic bowel, placentomegaly. USG specificity and sensitivity was 100% and 11% respectively. CONCLUSION USG has an important role in the detection rubella intrauterine infection in case of severe abnormalities. The obstetricians should understand the limitations of ultrasound in detection of deafness and minor abnormalities.
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Affiliation(s)
- A Migliucci
- Department of Obstetrics and Gynecology, University Hospital Federico II, Naples, Italy.
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Matrone G, Quaglia F, Magenes G. Modeling and simulation of ultrasound fields generated by 2D phased array transducers for medical applications. Annu Int Conf IEEE Eng Med Biol Soc 2010; 2010:6003-6006. [PMID: 21097110 DOI: 10.1109/iembs.2010.5627588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Modern ultrasound imaging instrumentation for clinical applications allows real-time volumetric scanning of the patients' body. 4D imaging has been made possible thanks to the development of new echographic probes which consist in 2D phased arrays of piezoelectric transducers. In these new devices it is the system electronics which properly drives the matrix elements and focuses the beam in order to obtain a sequence of volumetric images. This paper introduces an ultrasound field simulator based on the Spatial Impulse Response method which is being properly developed to analyze the characteristics of the ultrasound field generated by a 2D phased array of transducers. Thanks to its high configurability by the user, it will represent a very useful tool for electronics designers in developing 4D ultrasound imaging systems components.
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Affiliation(s)
- G Matrone
- Department of Computer Engineering and Systems Science, University of Pavia, via Ferrata 1, 27100, ITALY.
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Lattuada L, Quaglia F, Iannelli F, Gissi C, Mantecca P, Bacchetta R, Polli M. Mitochondrial DNA sequence variations in some Italian wild boar populations. J Anim Breed Genet 2009; 126:154-63. [PMID: 19320773 DOI: 10.1111/j.1439-0388.2008.00766.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In order to investigate the relationships between Italian wild boar and major pig breeds, we studied the genetic variability of four wild boar populations in Italy (Arezzo, Pisa, Parma, Bergamo) using a 533-bp fragment of the mitochondrial control region. Sixty-nine wild boar samples were analysed, allowing the identification of 10 distinct haplotypes, which involve a total of 15 single nucleotide polymorphisms. Phylogenetic and network analyses were performed also considering several sequences of wild and domesticated forms available in the databases. The Bayesian phylogenetic tree and the Median-Joining network analyses show three main groups: the Italian (IT), European (EU) and Asian (AS) clades. The IT clade corresponds to the Maremma endemic wild boar population and also includes Sardinian individuals, while the EU and AS groups include wild boars as well as domestic pig breeds. Only two individuals from Pisa cluster in the IT group, whereas two haplotypes from Bergamo cluster in the AS group and all other samples cluster in the EU clade. These findings suggest that in Italy wild boar populations have a mixed origin, both EU and AS, and that an interbreeding between wild and domesticated strains has probably occurred. Eight of the 10 wild boars coming from the Migliarino-San Rossore-Massaciuccoli Regional Park (Pisa) belong to H2 and H3 haplotypes, and cluster into the EU clade, suggesting that this regional park is not anymore exclusive of the endemic Maremma wild boar.
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Affiliation(s)
- L Lattuada
- Dipartimento di Biologia, Università degli Studi di Milano, Milano, Italy
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Simioli S, Napolitano R, Quaglia F, Mazzarelli LL, Agangi A, Milanes GM, Tessitore G, Iannaccone A, Maruotti GM, Martinelli P. Fetal borderline cerebral ventriculomegaly: clinical significance and management. Minerva Ginecol 2009; 61:109-112. [PMID: 19255558] [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] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
AIM The aim of this study was to evaluate the clinical significance and the management of fetal borderline lateral cerebral ventriculomegaly. METHODS Fetuses with a sonographic diagnosis of lateral cerebral ventriculomegaly isolated or associated to other fetal malformations were followed monthly and a review of the English-language literature was made. RESULTS Of 86 fetuses analyzed, 30 suffered from hydrocephaly (monolateral, bilateral), 56 showed also several other malformations . Chromosomal aberrations is possible also in case of isolated hydrocephaly. Neurological sequelae, mostly a mild to moderate delay in cognitive and/or motor development, is present in 10% of the cases. CONCLUSIONS In most cases, isolated borderline lateral cerebral ventriculomegaly has no consequence. However, the risk of cerebral maldevelopment, delayed neurological development and, possibly, chromosomal aberrations is increased. The optimum management of these cases remains uncertain.
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Affiliation(s)
- S Simioli
- Ostetrics and Ginecology Emergency Unit, Department of Ostetrics, Ginecology and Reproduction Physiopathology, University Federico II, Naples, Italy.
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45
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Puglisi R, Murmura C, Piombo A, Quaglia F. [Retroperitoneal abscess due to asymptomatic duodenal perforation by foreign body. A case report]. G Chir 2008; 29:180-181. [PMID: 18419986] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We present a case of retroperitoneal abscess due to asymptomatic duodenal perforation by foreign body. Patient has been admitted for lumbar pain and subocclusive crisis, with a medical history negative for acute symptomatology. After both clinical and radiologic evaluation, an abscess-like mass was detected in the context of right psoas muscle. Patient underwent surgical operation and a lumbar abscess has been found containing a foreign body (toothpick). There has been a transduodenal migration of the foreign body, without clinical signs of duodenal perforation.
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Affiliation(s)
- R Puglisi
- UO Chirurgia Generale, Azienda Ospedaliera Villascassi, Genova
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46
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Mallia Milanes G, Napolitano R, Quaglia F, Mazzarelli LL, Agangi A, Tessitore G, Sansone M, Simioli S, Maruotti GM, Martinelli P. Prenatal diagnosis of arthrogryposis. Minerva Ginecol 2007; 59:203-4. [PMID: 17505463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
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47
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Napolitano R, Maruotti GM, Mazzarelli LL, Quaglia F, Tessitore G, Pecoraro M, Agangi A, Mallia Milanes G, Martinelli P. Prenatal diagnosis of placental chorioangioma: our experience. Minerva Ginecol 2005; 57:649-54. [PMID: 16306870] [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] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Placental chorioangioma is the most common benign tumor of placenta. The relationship of vascularized chorioangiomas to adverse pregnancy outcome is well recognized. We report 3 cases of placental chorioangioma. Hypervascularization of the lesions in all patients and the immune hydrops with adverse fetal outcome in 2 cases are the complications of our mini-series. Ultrasonography and Doppler ultrasonography findings were useful in establishing the prenatal diagnosis and the prognosis.
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Affiliation(s)
- R Napolitano
- Obstetrics and Gynecology Emergencies Unit, Department Obstetrics, Gynecology and Human Reproduction Physiopathology, University Federico II, Via Sergio Pansini 5, 81000 Naples, Italy
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Stella M, De Cian F, Mariani F, Quaglia F, Baldo S, Mithieux F, Meeus P, Kaemmerlen P, Rivoire M. [Cryosurgery with transpleurodiaphragmatic approach in the treatment of non-resectable and recurrent hepatic metastasis from the colorectum]. Suppl Tumori 2005; 4:S44. [PMID: 16437894] [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] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Cryotherapy allows the destruction of unresectable liver malignancies. The abdominal approach is uneasy for recurrent colorectal metastases located in the upper part of the liver and close to the inferior vena cava, the hepatic veins and the diaphragm. A transpleurodiaphragmatic access was employed. From 1999 to 2003, ten patients with recurrent colorectal liver metastases underwent transdiaphragmatic cryotherapy via a right thoracotomy. Median diameter was 30 mm. One to 4 cryoprobes were used, depending on the size and location of the metastasis. There were no operative deaths, and only 3 patients developed minor complications. Computerized tomography examination of the liver performed one week, three months after cryotherapy, assessed treatment completeness in all patients. At 14 months, 9 patients were alive and 6 were disease-free. Two patients had liver recurrences outside the cryolesion. A transthoracic access may represent the safest and easiest surgical approach for liver tumor cryoablation in selected patients with non resectable recurrent metastases of the upper liver.
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Affiliation(s)
- M Stella
- Dipartimento di Chirurgia, DICM, Università di Genova
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Baldo S, Rivoire M, Sobrero A, Comandini D, Civalleri D, Stella M, Quaglia F, Santoni R, Malerba M, Mariani F, DeCian F. [Surgical resection of gastrointestinal stromal tumor after treatment with imatinib: clinical case]. Suppl Tumori 2005; 4:S97. [PMID: 16437930] [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] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The stromal tumor is the most common mesenchymal tumor of the gastrointestinal tract. Surgical resection is the first-line therapy for operable lesions, however for inoperable imatinib is an effective therapy. In this setting a patient has been operated after a remarkable response to imatinib, used as both neoadjuvant and adjuvant. This approach led to a disease-free condition without toxicity and complications.
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Affiliation(s)
- S Baldo
- DICMI, Università degli Studi, Genova
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Miro A, Quaglia F, Sorrentino U, La Rotonda MI, D'Emmanuele Di Villa Bianca R, Sorrentino R. Improvement of gliquidone hypoglycaemic effect in rats by cyclodextrin formulations. Eur J Pharm Sci 2005; 23:57-64. [PMID: 15324923 DOI: 10.1016/j.ejps.2004.05.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2003] [Revised: 05/12/2004] [Accepted: 05/24/2004] [Indexed: 10/26/2022]
Abstract
This study was carried out with the aim to optimize the pharmacological profile of gliquidone (GLI)--a poorly bioavailable hypoglycaemic agent sparingly soluble in water--through complexation with cyclodextrins. In order to increase the apparent solubility of GLI, two cyclodextrins, namely beta-cyclodextrin (betaCD) and hydroxypropyl-beta-cyclodextrin (HPbetaCD), were tested. The effect of cyclodextrin addition on the aqueous solubility of GLI was evaluated by the phase solubility method at different pH values. The amount of GLI in solution increased upon CD addition according to A type plots. The aqueous solubility of GLI was enhanced more at higher pH values and using HPbetaCD. On the basis of its performance, HPbetaCD was selected as host to prepare GLI oral formulations. GLI/HPbetaCD solid systems were prepared at 1:2 molar ratio by co-grinding, spray-drying and freeze-drying and characterized by DSC, FTIR and X-ray powder diffractometry. Powders were amorphous and showed an improved dissolution rate in comparison with GLI. GLI/HPbetaCD co-ground and freeze-dried products were the most interesting systems, since they dissolved 62 and 94% of total drug after 15 min, respectively. The hypoglycaemic effect of the most rapidly dissolving binary systems was evaluated after oral administration in fasted rats by measuring plasma glucose level in the time interval 0.5-36 h and compared to free GLI. Our findings indicate that cyclodextrin-containing formulations not only provide an onset of hypoglycaemic effect faster than GLI, but also enhance significantly the pharmacological effect due to improved biopharmaceutics. The association GLI/HPbetaCD allows a reduction of the oral dose and is expected to provide a better control over drug side effects, contributing to improve safety and efficacy of GLI.
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Affiliation(s)
- A Miro
- Dipartimento di Chimica Farmaceutica e Tossicologica, Università degli Studi di Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy
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