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Gounou C, Rouyer L, Siegfried G, Harté E, Bouvet F, d'Agata L, Darbo E, Lefeuvre M, Derieppe MA, Bouton L, Mélane M, Chapeau D, Martineau J, Prouzet-Mauleon V, Tan S, Souleyreau W, Saltel F, Argoul F, Khatib AM, Brisson AR, Iggo R, Bouter A. Inhibition of the membrane repair protein annexin-A2 prevents tumor invasion and metastasis. Cell Mol Life Sci 2023; 81:7. [PMID: 38092984 PMCID: PMC10719157 DOI: 10.1007/s00018-023-05049-3] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 11/09/2023] [Accepted: 11/11/2023] [Indexed: 12/17/2023]
Abstract
Cancer cells are exposed to major compressive and shearing forces during invasion and metastasis, leading to extensive plasma membrane damage. To survive this mechanical stress, they need to repair membrane injury efficiently. Targeting the membrane repair machinery is thus potentially a new way to prevent invasion and metastasis. We show here that annexin-A2 (ANXA2) is required for membrane repair in invasive breast and pancreatic cancer cells. Mechanistically, we show by fluorescence and electron microscopy that cells fail to reseal shear-stress damaged membrane when ANXA2 is silenced or the protein is inhibited with neutralizing antibody. Silencing of ANXA2 has no effect on proliferation in vitro, and may even accelerate migration in wound healing assays, but reduces tumor cell dissemination in both mice and zebrafish. We expect that inhibiting membrane repair will be particularly effective in aggressive, poor prognosis tumors because they rely on the membrane repair machinery to survive membrane damage during tumor invasion and metastasis. This could be achieved either with anti-ANXA2 antibodies, which have been shown to inhibit metastasis of breast and pancreatic cancer cells, or with small molecule drugs.
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Affiliation(s)
- C Gounou
- CNRS, Bordeaux INP, CBMN, UMR 5248, University of Bordeaux, Bât. B14, Allée Geoffroy Saint Hilaire, 33600, Pessac, France
| | - L Rouyer
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
| | - G Siegfried
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
- XenoFish, B2 Ouest, Allée Geoffroy St Hilaire CS50023, 33615, Pessac, France
| | - E Harté
- CNRS, LOMA, UMR 5798, University of Bordeaux, 33400, Talence, France
| | - F Bouvet
- CNRS, Bordeaux INP, CBMN, UMR 5248, University of Bordeaux, Bât. B14, Allée Geoffroy Saint Hilaire, 33600, Pessac, France
| | - L d'Agata
- CNRS, Bordeaux INP, CBMN, UMR 5248, University of Bordeaux, Bât. B14, Allée Geoffroy Saint Hilaire, 33600, Pessac, France
| | - E Darbo
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
| | - M Lefeuvre
- CNRS, Bordeaux INP, CBMN, UMR 5248, University of Bordeaux, Bât. B14, Allée Geoffroy Saint Hilaire, 33600, Pessac, France
| | - M A Derieppe
- Animalerie Mutualisée, Service Commun des Animaleries, University of Bordeaux, 33000, Bordeaux, France
| | - L Bouton
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
| | - M Mélane
- CNRS, LOMA, UMR 5798, University of Bordeaux, 33400, Talence, France
| | - D Chapeau
- CNRS, Bordeaux INP, CBMN, UMR 5248, University of Bordeaux, Bât. B14, Allée Geoffroy Saint Hilaire, 33600, Pessac, France
| | - J Martineau
- Animalerie Mutualisée, Service Commun des Animaleries, University of Bordeaux, 33000, Bordeaux, France
| | - V Prouzet-Mauleon
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
- CRISPRedit, TBMcore, UAR CNRS 3427, Inserm US 005, University of Bordeaux, Bordeaux, France
| | - S Tan
- CNRS, Bordeaux INP, CBMN, UMR 5248, University of Bordeaux, Bât. B14, Allée Geoffroy Saint Hilaire, 33600, Pessac, France
| | - W Souleyreau
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
| | - F Saltel
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
| | - F Argoul
- CNRS, LOMA, UMR 5798, University of Bordeaux, 33400, Talence, France
| | - A M Khatib
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
- XenoFish, B2 Ouest, Allée Geoffroy St Hilaire CS50023, 33615, Pessac, France
- Bergonié Institute, Bordeaux, France
| | - A R Brisson
- CNRS, Bordeaux INP, CBMN, UMR 5248, University of Bordeaux, Bât. B14, Allée Geoffroy Saint Hilaire, 33600, Pessac, France
| | - R Iggo
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
| | - A Bouter
- CNRS, Bordeaux INP, CBMN, UMR 5248, University of Bordeaux, Bât. B14, Allée Geoffroy Saint Hilaire, 33600, Pessac, France.
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Adapen C, Réot L, Nunez N, Cannou C, Marlin R, Lemaître J, d'Agata L, Gilson E, Ginoux E, Le Grand R, Nugeyre MT, Menu E. Local Innate Markers and Vaginal Microbiota Composition Are Influenced by Hormonal Cycle Phases. Front Immunol 2022; 13:841723. [PMID: 35401577 PMCID: PMC8990777 DOI: 10.3389/fimmu.2022.841723] [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: 12/22/2021] [Accepted: 02/28/2022] [Indexed: 12/12/2022] Open
Abstract
Background The female reproductive tract (FRT) mucosa is the first line of defense against sexually transmitted infection (STI). FRT environmental factors, including immune-cell composition and the vaginal microbiota, interact with each other to modulate susceptibility to STIs. Moreover, the menstrual cycle induces important modifications within the FRT mucosa. Cynomolgus macaques are used as a model for the pathogenesis and prophylaxis of STIs. In addition, their menstrual cycle and FRT morphology are similar to women. The cynomolgus macaque vaginal microbiota is highly diverse and similar to dysbiotic vaginal microbiota observed in women. However, the impact of the menstrual cycle on immune markers and the vaginal microbiota in female cynomolgus macaques is unknown. We conducted a longitudinal study covering three menstrual cycles in cynomolgus macaques. The evolution of the composition of the vaginal microbiota and inflammation (cytokine/chemokine profile and neutrophil phenotype) in the FRT and blood was determined throughout the menstrual cycle. Results Cervicovaginal cytokine/chemokine concentrations were affected by the menstrual cycle, with a peak of production during menstruation. We observed three main cervicovaginal neutrophil subpopulations: CD11bhigh CD101+ CD10+ CD32a+, CD11bhigh CD101+ CD10- CD32a+, and CD11blow CD101low CD10- CD32a-, of which the proportion varied during the menstrual cycle. During menstruation, there was an increase in the CD11bhigh CD101+ CD10+ CD32a+ subset of neutrophils, which expressed higher levels of CD62L. Various bacterial taxa in the vaginal microbiota showed differential abundance depending on the phase of the menstrual cycle. Compilation of the factors that vary according to hormonal phase showed the clustering of samples collected during menstruation, characterized by a high concentration of cytokines and an elevated abundance of the CD11bhigh CD101+ CD10+ CD32a+ CD62L+ neutrophil subpopulation. Conclusions We show a significant impact of menstruation on the local environment (cytokine production, neutrophil phenotype, and vaginal microbiota composition) in female cynomolgus macaques. Menstruation triggers increased production of cytokines, shift of the vaginal microbiota composition and the recruitment of mature/activated neutrophils from the blood to the FRT. These results support the need to monitor the menstrual cycle and a longitudinal sampling schedule for further studies in female animals and/or women focusing on the mucosal FRT environment.
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Affiliation(s)
- Cindy Adapen
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases [IMVA-HB/Infectious Disease Models and Innovative Therapies (IDMIT)], Fontenay-aux-Roses, France
| | - Louis Réot
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases [IMVA-HB/Infectious Disease Models and Innovative Therapies (IDMIT)], Fontenay-aux-Roses, France
| | | | - Claude Cannou
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases [IMVA-HB/Infectious Disease Models and Innovative Therapies (IDMIT)], Fontenay-aux-Roses, France.,Mucosal Immunity and Sexually Transmitted Infection Control (MISTIC) Group, Department of Virology, Institut Pasteur, Paris, France
| | - Romain Marlin
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases [IMVA-HB/Infectious Disease Models and Innovative Therapies (IDMIT)], Fontenay-aux-Roses, France
| | - Julien Lemaître
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases [IMVA-HB/Infectious Disease Models and Innovative Therapies (IDMIT)], Fontenay-aux-Roses, France
| | | | | | | | - Roger Le Grand
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases [IMVA-HB/Infectious Disease Models and Innovative Therapies (IDMIT)], Fontenay-aux-Roses, France
| | - Marie-Thérèse Nugeyre
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases [IMVA-HB/Infectious Disease Models and Innovative Therapies (IDMIT)], Fontenay-aux-Roses, France.,Mucosal Immunity and Sexually Transmitted Infection Control (MISTIC) Group, Department of Virology, Institut Pasteur, Paris, France
| | - Elisabeth Menu
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases [IMVA-HB/Infectious Disease Models and Innovative Therapies (IDMIT)], Fontenay-aux-Roses, France.,Mucosal Immunity and Sexually Transmitted Infection Control (MISTIC) Group, Department of Virology, Institut Pasteur, Paris, France
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Dutreux F, Da Silva C, d'Agata L, Couloux A, Gay EJ, Istace B, Lapalu N, Lemainque A, Linglin J, Noel B, Wincker P, Cruaud C, Rouxel T, Balesdent MH, Aury JM. De novo assembly and annotation of three Leptosphaeria genomes using Oxford Nanopore MinION sequencing. Sci Data 2018; 5:180235. [PMID: 30398473 PMCID: PMC6219404 DOI: 10.1038/sdata.2018.235] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 07/13/2018] [Indexed: 01/11/2023] Open
Abstract
Leptosphaeria maculans and Leptosphaeria biglobosa are ascomycete phytopathogens of Brassica napus (oilseed rape, canola). Here we report the complete sequence of three Leptosphaeria genomes (L. maculans JN3, L. maculans Nz-T4 and L. biglobosa G12-14). Nz-T4 and G12-14 genome assemblies were generated de novo and the reference JN3 genome assembly was improved using Oxford Nanopore MinION reads. The new assembly of L. biglobosa showed the existence of AT rich regions and pointed to a genome compartmentalization previously unsuspected following Illumina sequencing. Moreover nanopore sequencing allowed us to generate a chromosome-level assembly for the L. maculans reference isolate, JN3. The genome annotation was supported by integrating conserved proteins and RNA sequencing from Leptosphaeria-infected samples. The newly produced high-quality assemblies and annotations of those three Leptosphaeria genomes will allow further studies, notably focused on the tripartite interaction between L. maculans, L. biglobosa and oilseed rape. The discovery of as yet unknown effectors will notably allow progress in B. napus breeding towards L. maculans resistance.
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Affiliation(s)
- Fabien Dutreux
- Genoscope, Institut de Biologie François-Jacob, Commissariat à l'Energie Atomique (CEA), Université Paris-Saclay, F-91057 Evry, France.,UMR BIOGER, INRA, AgroParisTech, Université Paris-Saclay, Avenue Lucien Brétignières, BP 01, F-78850 Thiverval-Grignon, France
| | - Corinne Da Silva
- Genoscope, Institut de Biologie François-Jacob, Commissariat à l'Energie Atomique (CEA), Université Paris-Saclay, F-91057 Evry, France
| | - Léo d'Agata
- Genoscope, Institut de Biologie François-Jacob, Commissariat à l'Energie Atomique (CEA), Université Paris-Saclay, F-91057 Evry, France
| | - Arnaud Couloux
- Genoscope, Institut de Biologie François-Jacob, Commissariat à l'Energie Atomique (CEA), Université Paris-Saclay, F-91057 Evry, France
| | - Elise J Gay
- UMR BIOGER, INRA, AgroParisTech, Université Paris-Saclay, Avenue Lucien Brétignières, BP 01, F-78850 Thiverval-Grignon, France
| | - Benjamin Istace
- Genoscope, Institut de Biologie François-Jacob, Commissariat à l'Energie Atomique (CEA), Université Paris-Saclay, F-91057 Evry, France
| | - Nicolas Lapalu
- UMR BIOGER, INRA, AgroParisTech, Université Paris-Saclay, Avenue Lucien Brétignières, BP 01, F-78850 Thiverval-Grignon, France
| | - Arnaud Lemainque
- Genoscope, Institut de Biologie François-Jacob, Commissariat à l'Energie Atomique (CEA), Université Paris-Saclay, F-91057 Evry, France
| | - Juliette Linglin
- UMR BIOGER, INRA, AgroParisTech, Université Paris-Saclay, Avenue Lucien Brétignières, BP 01, F-78850 Thiverval-Grignon, France
| | - Benjamin Noel
- Genoscope, Institut de Biologie François-Jacob, Commissariat à l'Energie Atomique (CEA), Université Paris-Saclay, F-91057 Evry, France
| | - Patrick Wincker
- Génomique Métabolique, Genoscope, Institut de Biologie François Jacob, Commissarait à l'Energie Atomique (CEA), CNRS, Université d'Evry, Université Paris-Saclay, 91057 Evry, France
| | - Corinne Cruaud
- Genoscope, Institut de Biologie François-Jacob, Commissariat à l'Energie Atomique (CEA), Université Paris-Saclay, F-91057 Evry, France
| | - Thierry Rouxel
- UMR BIOGER, INRA, AgroParisTech, Université Paris-Saclay, Avenue Lucien Brétignières, BP 01, F-78850 Thiverval-Grignon, France
| | - Marie-Hélène Balesdent
- UMR BIOGER, INRA, AgroParisTech, Université Paris-Saclay, Avenue Lucien Brétignières, BP 01, F-78850 Thiverval-Grignon, France
| | - Jean-Marc Aury
- Genoscope, Institut de Biologie François-Jacob, Commissariat à l'Energie Atomique (CEA), Université Paris-Saclay, F-91057 Evry, France
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4
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Istace B, Friedrich A, d'Agata L, Faye S, Payen E, Beluche O, Caradec C, Davidas S, Cruaud C, Liti G, Lemainque A, Engelen S, Wincker P, Schacherer J, Aury JM. de novo assembly and population genomic survey of natural yeast isolates with the Oxford Nanopore MinION sequencer. Gigascience 2017; 6:1-13. [PMID: 28369459 PMCID: PMC5466710 DOI: 10.1093/gigascience/giw018] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [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: 10/04/2016] [Accepted: 12/27/2016] [Indexed: 02/07/2023] Open
Abstract
Background: Oxford Nanopore Technologies Ltd (Oxford, UK) have recently commercialized MinION, a small single-molecule nanopore sequencer, that offers the possibility of sequencing long DNA fragments from small genomes in a matter of seconds. The Oxford Nanopore technology is truly disruptive; it has the potential to revolutionize genomic applications due to its portability, low cost, and ease of use compared with existing long reads sequencing technologies. The MinION sequencer enables the rapid sequencing of small eukaryotic genomes, such as the yeast genome. Combined with existing assembler algorithms, near complete genome assemblies can be generated and comprehensive population genomic analyses can be performed. Results: Here, we resequenced the genome of the Saccharomyces cerevisiae S288C strain to evaluate the performance of nanopore-only assemblers. Then we de novo sequenced and assembled the genomes of 21 isolates representative of the S. cerevisiae genetic diversity using the MinION platform. The contiguity of our assemblies was 14 times higher than the Illumina-only assemblies and we obtained one or two long contigs for 65 % of the chromosomes. This high contiguity allowed us to accurately detect large structural variations across the 21 studied genomes. Conclusion: Because of the high completeness of the nanopore assemblies, we were able to produce a complete cartography of transposable elements insertions and inspect structural variants that are generally missed using a short-read sequencing strategy. Our analyses show that the Oxford Nanopore technology is already usable for de novo sequencing and assembly; however, non-random errors in homopolymers require polishing the consensus using an alternate sequencing technology.
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Affiliation(s)
- Benjamin Istace
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Institut de Génomique (IG), Genoscope, BP5706, 91057 Evry, France
| | - Anne Friedrich
- Université de Strasbourg, CNRS, GMGM UMR 7156, F-67000 Strasbourg, France
| | - Léo d'Agata
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Institut de Génomique (IG), Genoscope, BP5706, 91057 Evry, France
| | - Sébastien Faye
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Institut de Génomique (IG), Genoscope, BP5706, 91057 Evry, France
| | - Emilie Payen
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Institut de Génomique (IG), Genoscope, BP5706, 91057 Evry, France
| | - Odette Beluche
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Institut de Génomique (IG), Genoscope, BP5706, 91057 Evry, France
| | - Claudia Caradec
- Université de Strasbourg, CNRS, GMGM UMR 7156, F-67000 Strasbourg, France
| | - Sabrina Davidas
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Institut de Génomique (IG), Genoscope, BP5706, 91057 Evry, France
| | - Corinne Cruaud
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Institut de Génomique (IG), Genoscope, BP5706, 91057 Evry, France
| | - Gianni Liti
- Institute of Research on Cancer and Ageing of Nice (IRCAN), CNRS UMR 7284-INSERM U1081, Faculté de Médecine, Université de Nice Sophia Antipolis, Nice, France
| | - Arnaud Lemainque
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Institut de Génomique (IG), Genoscope, BP5706, 91057 Evry, France
| | - Stefan Engelen
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Institut de Génomique (IG), Genoscope, BP5706, 91057 Evry, France
| | - Patrick Wincker
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Institut de Génomique (IG), Genoscope, BP5706, 91057 Evry, France.,Université d'Evry Val d'Essonne, UMR 8030, CP5706, 91057 Evry, France.,Centre National de Recherche Scientifique (CNRS), UMR 8030, CP5706, 91057 Evry, France
| | - Joseph Schacherer
- Université de Strasbourg, CNRS, GMGM UMR 7156, F-67000 Strasbourg, France
| | - Jean-Marc Aury
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Institut de Génomique (IG), Genoscope, BP5706, 91057 Evry, France
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5
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Madoui MA, Dossat C, d'Agata L, van Oeveren J, van der Vossen E, Aury JM. MaGuS: a tool for quality assessment and scaffolding of genome assemblies with Whole Genome Profiling™ Data. BMC Bioinformatics 2016; 17:115. [PMID: 26936254 PMCID: PMC4776351 DOI: 10.1186/s12859-016-0969-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 02/23/2016] [Indexed: 12/20/2022] Open
Abstract
Background Scaffolding is an essential step in the genome assembly process. Current methods based on large fragment paired-end reads or long reads allow an increase in contiguity but often lack consistency in repetitive regions, resulting in fragmented assemblies. Here, we describe a novel tool to link assemblies to a genome map to aid complex genome reconstruction by detecting assembly errors and allowing scaffold ordering and anchoring. Results We present MaGuS (map-guided scaffolding), a modular tool that uses a draft genome assembly, a Whole Genome Profiling™ (WGP) map, and high-throughput paired-end sequencing data to estimate the quality and to enhance the contiguity of an assembly. We generated several assemblies of the Arabidopsis genome using different scaffolding programs and applied MaGuS to select the best assembly using quality metrics. Then, we used MaGuS to perform map-guided scaffolding to increase contiguity by creating new scaffold links in low-covered and highly repetitive regions where other commonly used scaffolding methods lack consistency. Conclusions MaGuS is a powerful reference-free evaluator of assembly quality and a WGP map-guided scaffolder that is freely available at https://github.com/institut-de-genomique/MaGuS. Its use can be extended to other high-throughput sequencing data (e.g., long-read data) and also to other map data (e.g., genetic maps) to improve the quality and the contiguity of large and complex genome assemblies. Electronic supplementary material The online version of this article (doi:10.1186/s12859-016-0969-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Mohammed-Amin Madoui
- CEA, DSV, Institut de Génomique, Genoscope, 2 rue Gaston Crémieux, CP5706, 91057, Evry, France.
| | - Carole Dossat
- CEA, DSV, Institut de Génomique, Genoscope, 2 rue Gaston Crémieux, CP5706, 91057, Evry, France.
| | - Léo d'Agata
- CEA, DSV, Institut de Génomique, Genoscope, 2 rue Gaston Crémieux, CP5706, 91057, Evry, France.
| | - Jan van Oeveren
- Keygene NV, Agro Business Park 90, 6708 PW, Wageningen, The Netherlands.
| | | | - Jean-Marc Aury
- CEA, DSV, Institut de Génomique, Genoscope, 2 rue Gaston Crémieux, CP5706, 91057, Evry, France.
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