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Perez M, Ntemiri A, Tan H, Harris HMB, Roager HM, Ribière C, O’Toole PW. A synthetic consortium of 100 gut commensals modulates the composition and function in a colon model of the microbiome of elderly subjects. Gut Microbes 2021; 13:1-19. [PMID: 33993839 PMCID: PMC8128205 DOI: 10.1080/19490976.2021.1919464] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Administration of cultured gut isolates holds promise for modulating the altered composition and function of the microbiota in older subjects, and for promoting their health. From among 692 initial isolates, we selected 100 gut commensal strains (MCC100) based on emulating the gut microbiota of healthy subjects, and retaining strain diversity within selected species. MCC100 susceptibility to seven antibiotics was determined, and their genomes were screened for virulence factor, antimicrobial resistance and bacteriocin genes. Supplementation of healthy and frail elderly microbiota types with the MCC100 in an in vitro colon model increased alpha-diversity, raised relative abundance of taxa including Blautia luti, Bacteroides fragilis, and Sutterella wadsworthensis; and introduced taxa such as Bifidobacterium spp. Microbiota changes correlated with higher levels of branched chain amino acids, which are health-associated in elderly. The study establishes that the MCC100 consortium can modulate older subjects' microbiota composition and associated metabolome in vitro, paving the way for pre-clinical and human trials.
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Affiliation(s)
- Marta Perez
- School of Microbiology and APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Alexandra Ntemiri
- School of Microbiology and APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Huizi Tan
- School of Microbiology and APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Hugh M. B. Harris
- School of Microbiology and APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Henrik M. Roager
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Frederiksberg, Denmark
| | - Céline Ribière
- School of Microbiology and APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Paul W. O’Toole
- School of Microbiology and APC Microbiome Ireland, University College Cork, Cork, Ireland,CONTACT Paul W. O’Toole School of Microbiology & APC Microbiome Ireland, Food Science Building, University College Cork, CorkT12 YN60, Ireland
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Ribière C, Hegarty C, Stephenson H, Whelan P, O'Toole PW. Gut and Whole-Body Microbiota of the Honey Bee Separate Thriving and Non-thriving Hives. Microb Ecol 2019; 78:195-205. [PMID: 30467713 DOI: 10.1007/s00248-018-1287-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Accepted: 11/06/2018] [Indexed: 05/23/2023]
Abstract
The recent worldwide decline of honey bee colonies is a major ecological problem which also threatens pollinated crop production. Several interacting stressors such as environmental pressures and pathogens are suspected. Recently, the gut microbiota has emerged as a critical factor affecting bee health and fitness. We profiled the bacterial communities associated with the gut and whole body of worker bees to assess whether non-thriving colonies could be separated from thriving hives based on their microbial signature. The microbiota of thriving colonies was characterised by higher diversity and higher relative abundance of bacterial taxa involved in sugar degradation that were previously associated with healthy bees (e.g. Commensalibacter sp. and Bartonella apis). In contrast, the microbiota of non-thriving bees was depleted in health-associated species (e.g. Lactobacillus apis), and bacterial taxa associated with disease states (e.g. Gilliamella apicola) and pollen degradation (e.g. G. apicola and Bifidobacterium asteroides) were present in higher abundance compared to thriving colonies. Gut and whole-body microbiota shared a similar dominant core but their comparison showed differences in composition and relative abundance. More differences in taxon relative abundance between gut and whole body were observed in non-thriving bees, suggesting that microbiota associated with other bee organs might also be different. Thus, microbiota profiling could be used as a diagnostic tool in beekeeping practices to predict hive health and guide hive management.
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Affiliation(s)
- Céline Ribière
- School of Microbiology and APC Microbiome Ireland, Food Science Building, University College Cork, Cork, T12 YN60, Ireland
| | - Claire Hegarty
- School of Microbiology and APC Microbiome Ireland, Food Science Building, University College Cork, Cork, T12 YN60, Ireland
| | - Hannah Stephenson
- School of Microbiology and APC Microbiome Ireland, Food Science Building, University College Cork, Cork, T12 YN60, Ireland
| | - Padraig Whelan
- Apis Protect Limited, Environmental Research Centre, Lee Road, Cork, Ireland
| | - Paul W O'Toole
- School of Microbiology and APC Microbiome Ireland, Food Science Building, University College Cork, Cork, T12 YN60, Ireland.
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Ntemiri A, Ribière C, Stanton C, Ross RP, O'Connor EM, O'Toole PW. Retention of Microbiota Diversity by Lactose-Free Milk in a Mouse Model of Elderly Gut Microbiota. J Agric Food Chem 2019; 67:2098-2112. [PMID: 30665298 DOI: 10.1021/acs.jafc.8b06414] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Prebiotics may improve aging-related dysbiosis. Milk is a source of nutrients including oligosaccharides whose prebiotic potential remains largely unexplored. We used a murine model to explore the effect of milk products on high diversity and lower diversity faecal microbiota from healthy and frail elderly subjects, respectively. Mice were treated with antibiotics and subsequently "humanized" with human faecal microbiota. The mice received lactose-free or whole milk, glycomacropeptide, or soy protein (control) supplemented diets for one month. The faecal microbiota was analyzed by 16S rRNA gene amplicon sequencing. Lactose-free milk diet was as efficient as the control diet in retaining faecal microbiota diversity in mice. Both milk diets had a significant effect on the relative abundance of health-relevant taxa (e.g., Ruminococcaceae, Lachnospiraceae). The glycomacropeptide prebiotic activity previously observed in vitro was not replicated in vivo. However, these data indicate the novel prebiotic potential of bovine milk for human nutrition.
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Affiliation(s)
- Alexandra Ntemiri
- School of Microbiology, Food Science Building , University College Cork , Western Road , T12 Y337 Cork , Ireland
- APC Microbiome Ireland , University College Cork , Western Road , T12 YN60 Cork , Ireland
| | - Céline Ribière
- School of Microbiology, Food Science Building , University College Cork , Western Road , T12 Y337 Cork , Ireland
- APC Microbiome Ireland , University College Cork , Western Road , T12 YN60 Cork , Ireland
| | - Catherine Stanton
- APC Microbiome Ireland , University College Cork , Western Road , T12 YN60 Cork , Ireland
- Teagasc, Moorepark Food Research Centre , Fermoy , Co Cork P61 C996 , Ireland
| | - R Paul Ross
- School of Microbiology, Food Science Building , University College Cork , Western Road , T12 Y337 Cork , Ireland
- APC Microbiome Ireland , University College Cork , Western Road , T12 YN60 Cork , Ireland
| | - Eibhlís M O'Connor
- APC Microbiome Ireland , University College Cork , Western Road , T12 YN60 Cork , Ireland
- Department of Biological Sciences, School of Natural Sciences , University of Limerick , V94 T9PX Limerick , Ireland
- Health Research Institute , University of Limerick , V94 T9PX Limerick , Ireland
| | - Paul W O'Toole
- School of Microbiology, Food Science Building , University College Cork , Western Road , T12 Y337 Cork , Ireland
- APC Microbiome Ireland , University College Cork , Western Road , T12 YN60 Cork , Ireland
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Esbelin J, Santos T, Ribière C, Desvaux M, Viala D, Chambon C, Hébraud M. Comparison of three methods for cell surface proteome extraction of Listeria monocytogenes biofilms. OMICS 2018; 22:779-787. [PMID: 30457927 DOI: 10.1089/omi.2018.0144] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The cell surface proteome of the foodborne pathogen Listeria monocytogenes, the etiological agent of listeriosis, is critical for understanding the physiological processes associated with stress resistance and persistence in the environment. In this context, the most widespread mode of growth for bacterial cells in natural and industrial environments is in biofilms. Cell surface proteins are, however, challenging to characterize because of their low abundance and poor solubility. Moreover, cell surface protein extracts are usually contaminated with cytoplasmic proteins that constitute the main signal in proteomic analysis. This study aimed to compare the efficiency of three methods to extract and explore surface proteins of L. monocytogenes growing in a biofilm: trypsin shaving, biotinylation, and cell fractionation. Peptide separation and identification were performed by shotgun proteomics using high-performance liquid chromatography combined with tandem mass spectrometry (LC-MS/MS). The biotinylation method was the most effective in extracting surface proteins, with the lowest rate of contamination by cytoplasmic proteins. Although presenting a higher contamination rate in cytoplasmic proteins, the other two techniques allowed the identification of additional surface proteins. Seven proteins were commonly retrieved by the three methods. The extracted proteins belong to several functional classes, involved in virulence, transport, or metabolic pathways. Finally, the three extraction methods seemed complementary and their combined use improved the exploration of the bacterial surface proteome. These new findings collectively inform future discovery and translational proteomics for clinical, environmental health, and industrial applications.
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Affiliation(s)
- Julia Esbelin
- 1 Université Clermont Auvergne, INRA, UMR Microbiologie Environnement Digestif Santé (MEDiS), Saint-Genès Champanelle, France
| | - Tiago Santos
- 1 Université Clermont Auvergne, INRA, UMR Microbiologie Environnement Digestif Santé (MEDiS), Saint-Genès Champanelle, France
| | - Céline Ribière
- 1 Université Clermont Auvergne, INRA, UMR Microbiologie Environnement Digestif Santé (MEDiS), Saint-Genès Champanelle, France
| | - Mickaël Desvaux
- 1 Université Clermont Auvergne, INRA, UMR Microbiologie Environnement Digestif Santé (MEDiS), Saint-Genès Champanelle, France
| | - Didier Viala
- 2 INRA, Plate-Forme d'Exploration du Métabolisme composante protéomique (PFEMcp), Saint-Genès Champanelle, France
| | - Christophe Chambon
- 2 INRA, Plate-Forme d'Exploration du Métabolisme composante protéomique (PFEMcp), Saint-Genès Champanelle, France
| | - Michel Hébraud
- 1 Université Clermont Auvergne, INRA, UMR Microbiologie Environnement Digestif Santé (MEDiS), Saint-Genès Champanelle, France.,2 INRA, Plate-Forme d'Exploration du Métabolisme composante protéomique (PFEMcp), Saint-Genès Champanelle, France
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Cariou M, Ribière C, Morlière S, Gauthier JP, Simon JC, Peyret P, Charlat S. Comparing 16S rDNA amplicon sequencing and hybridization capture for pea aphid microbiota diversity analysis. BMC Res Notes 2018; 11:461. [PMID: 29996907 PMCID: PMC6042230 DOI: 10.1186/s13104-018-3559-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 05/30/2018] [Accepted: 07/03/2018] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVE Targeted sequencing of 16S rDNA amplicons is routinely used for microbial community profiling but this method suffers several limitations such as bias affinity of universal primers and short read size. Gene capture by hybridization represents a promising alternative. Here we used a metagenomic extract from the pea aphid Acyrthosiphon pisum to compare the performances of two widely used PCR primer pairs with DNA capture, based on solution hybrid selection. RESULTS All methods produced an exhaustive description of the 8 bacterial taxa known to be present in this sample. In addition, the methods yielded similar quantitative results, with the number of reads strongly correlating with quantitative PCR controls. Both methods can thus be considered as qualitatively and quantitatively robust on such a sample with low microbial complexity.
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Affiliation(s)
- Marie Cariou
- Laboratoire de Biométrie et Biologie Evolutive, CNRS, UMR 5558, Université de Lyon, Université Lyon 1, 43 Boulevard du 11 novembre 1918, 69622 Villeurbanne, France
- Present Address: Department of Biology, University of Namur, Rue de Bruxelles 61, 5000 Namur, Belgium
| | - Céline Ribière
- INRA, MEDIS, Université Clermont Auvergne, 63000 Clermont-Ferrand, France
| | - Stéphanie Morlière
- INRA, UMR 1349 (IGEPP “Institut de Génétique, Environnement et Protection des Plantes”) INRA/Agrocampus Ouest/Université Rennes 1, 35653 Le Rheu, France
| | - Jean-Pierre Gauthier
- INRA, UMR 1349 (IGEPP “Institut de Génétique, Environnement et Protection des Plantes”) INRA/Agrocampus Ouest/Université Rennes 1, 35653 Le Rheu, France
| | - Jean-Christophe Simon
- INRA, UMR 1349 (IGEPP “Institut de Génétique, Environnement et Protection des Plantes”) INRA/Agrocampus Ouest/Université Rennes 1, 35653 Le Rheu, France
| | - Pierre Peyret
- INRA, MEDIS, Université Clermont Auvergne, 63000 Clermont-Ferrand, France
| | - Sylvain Charlat
- Laboratoire de Biométrie et Biologie Evolutive, CNRS, UMR 5558, Université de Lyon, Université Lyon 1, 43 Boulevard du 11 novembre 1918, 69622 Villeurbanne, France
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Santiard D, Sabourault D, Ribière C, Nordmann R, Houée-Levin C, Ferradini C. Production du radical acétyle : étude radiolytique comparée des radicaux libres issus de l’acétaldéhyde et de l’éthylène-glycol. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1991880967] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Ribière C, Beugnot R, Parisot N, Gasc C, Defois C, Denonfoux J, Boucher D, Peyretaillade E, Peyret P. Targeted Gene Capture by Hybridization to Illuminate Ecosystem Functioning. Methods Mol Biol 2016; 1399:167-82. [PMID: 26791503 DOI: 10.1007/978-1-4939-3369-3_10] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [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: 05/01/2023]
Abstract
Microbial communities are extremely abundant and diverse on earth surface and play key role in the ecosystem functioning. Thus, although next-generation sequencing (NGS) technologies have greatly improved knowledge on microbial diversity, it is necessary to reduce the biological complexity to better understand the microorganism functions. To achieve this goal, we describe a promising approach, based on the solution hybrid selection (SHS) method for the selective enrichment in a target-specific biomarker from metagenomic and metatranscriptomic samples. The success of this method strongly depends on the determination of sensitive, specific, and explorative probes to assess the complete targeted gene repertoire. Indeed, in this method, RNA probes were used to capture large DNA or RNA fragments harboring biomarkers of interest that potentially allow to link structure and function of communities of interest.
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Affiliation(s)
- Céline Ribière
- EA 4678, CIDAM, Clermont Université, Université d'Auvergne, BP 10448, 63000, Clermont-Ferrand, France.
| | - Réjane Beugnot
- EA 4678, CIDAM, Clermont Université, Université d'Auvergne, BP 10448, 63000, Clermont-Ferrand, France.
| | - Nicolas Parisot
- EA 4678, CIDAM, Clermont Université, Université d'Auvergne, BP 10448, 63000, Clermont-Ferrand, France.
| | - Cyrielle Gasc
- EA 4678, CIDAM, Clermont Université, Université d'Auvergne, BP 10448, 63000, Clermont-Ferrand, France.
| | - Clémence Defois
- EA 4678, CIDAM, Clermont Université, Université d'Auvergne, BP 10448, 63000, Clermont-Ferrand, France.
| | - Jérémie Denonfoux
- EA 4678, CIDAM, Clermont Université, Université d'Auvergne, BP 10448, 63000, Clermont-Ferrand, France.
- Genoscreen, Campus de l'Institut Pasteur de Lille, 59000, Lille, France.
| | - Delphine Boucher
- EA 4678, CIDAM, Clermont Université, Université d'Auvergne, BP 10448, 63000, Clermont-Ferrand, France.
| | - Eric Peyretaillade
- EA 4678, CIDAM, Clermont Université, Université d'Auvergne, 28 place Henri Dunant, 63001, Clermont-Ferrand, France.
| | - Pierre Peyret
- EA 4678, CIDAM, Clermont Université, Université d'Auvergne, 28 place Henri Dunant, 63001, Clermont-Ferrand, France.
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Santiard-Baron D, Aral B, Ribière C, Nordmann R, Sinet PM, Ceballos-Picot I. Quantification of Mn-SOD mRNAs by using a competitive reverse-transcription polymerase chain reaction. Redox Rep 2016; 1:185-9. [DOI: 10.1080/13510002.1995.11746983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Gasc C, Ribière C, Parisot N, Beugnot R, Defois C, Petit-Biderre C, Boucher D, Peyretaillade E, Peyret P. Capturing prokaryotic dark matter genomes. Res Microbiol 2015; 166:814-30. [PMID: 26100932 DOI: 10.1016/j.resmic.2015.06.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 06/02/2015] [Accepted: 06/03/2015] [Indexed: 11/18/2022]
Abstract
Prokaryotes are the most diverse and abundant cellular life forms on Earth. Most of them, identified by indirect molecular approaches, belong to microbial dark matter. The advent of metagenomic and single-cell genomic approaches has highlighted the metabolic capabilities of numerous members of this dark matter through genome reconstruction. Thus, linking functions back to the species has revolutionized our understanding of how ecosystem function is sustained by the microbial world. This review will present discoveries acquired through the illumination of prokaryotic dark matter genomes by these innovative approaches.
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Affiliation(s)
- Cyrielle Gasc
- Clermont Université, Université d'Auvergne, EA 4678 CIDAM, BP 10448, F-63001 Clermont-Ferrand, France.
| | - Céline Ribière
- Clermont Université, Université d'Auvergne, EA 4678 CIDAM, BP 10448, F-63001 Clermont-Ferrand, France.
| | - Nicolas Parisot
- Biologie Fonctionnelle Insectes et Interactions, UMR203 BF2I, INRA, INSA-Lyon, Université de Lyon, Villeurbanne, France.
| | - Réjane Beugnot
- Clermont Université, Université d'Auvergne, EA 4678 CIDAM, BP 10448, F-63001 Clermont-Ferrand, France.
| | - Clémence Defois
- Clermont Université, Université d'Auvergne, EA 4678 CIDAM, BP 10448, F-63001 Clermont-Ferrand, France.
| | - Corinne Petit-Biderre
- Université Blaise Pascal, Laboratoire Microorganismes, Génome et Environnement, Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) 6023, F-63171 Aubière, France.
| | - Delphine Boucher
- Clermont Université, Université d'Auvergne, EA 4678 CIDAM, BP 10448, F-63001 Clermont-Ferrand, France.
| | - Eric Peyretaillade
- Clermont Université, Université d'Auvergne, EA 4678 CIDAM, BP 10448, F-63001 Clermont-Ferrand, France.
| | - Pierre Peyret
- Clermont Université, Université d'Auvergne, EA 4678 CIDAM, BP 10448, F-63001 Clermont-Ferrand, France.
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Bragalini C, Ribière C, Parisot N, Vallon L, Prudent E, Peyretaillade E, Girlanda M, Peyret P, Marmeisse R, Luis P. Solution hybrid selection capture for the recovery of functional full-length eukaryotic cDNAs from complex environmental samples. DNA Res 2014; 21:685-94. [PMID: 25281543 PMCID: PMC4263301 DOI: 10.1093/dnares/dsu030] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [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] [Indexed: 12/30/2022] Open
Abstract
Eukaryotic microbial communities play key functional roles in soil biology and potentially represent a rich source of natural products including biocatalysts. Culture-independent molecular methods are powerful tools to isolate functional genes from uncultured microorganisms. However, none of the methods used in environmental genomics allow for a rapid isolation of numerous functional genes from eukaryotic microbial communities. We developed an original adaptation of the solution hybrid selection (SHS) for an efficient recovery of functional complementary DNAs (cDNAs) synthesized from soil-extracted polyadenylated mRNAs. This protocol was tested on the Glycoside Hydrolase 11 gene family encoding endo-xylanases for which we designed 35 explorative 31-mers capture probes. SHS was implemented on four soil eukaryotic cDNA pools. After two successive rounds of capture, >90% of the resulting cDNAs were GH11 sequences, of which 70% (38 among 53 sequenced genes) were full length. Between 1.5 and 25% of the cloned captured sequences were expressed in Saccharomyces cerevisiae. Sequencing of polymerase chain reaction-amplified GH11 gene fragments from the captured sequences highlighted hundreds of phylogenetically diverse sequences that were not yet described, in public databases. This protocol offers the possibility of performing exhaustive exploration of eukaryotic gene families within microbial communities thriving in any type of environment.
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Affiliation(s)
- Claudia Bragalini
- Department of Life Sciences and Systems Biology, University of Turin, viale Mattioli 25, Turin 10125, Italy Ecologie Microbienne, UMR CNRS 5557, USC INRA 1364, Université de Lyon, Université Lyon 1, Villeurbanne 69622, France
| | - Céline Ribière
- EA 4678 CIDAM, BP 10448, Clermont Université, Université d'Auvergne, Clermont-Ferrand F-63001, France
| | - Nicolas Parisot
- EA 4678 CIDAM, BP 10448, Clermont Université, Université d'Auvergne, Clermont-Ferrand F-63001, France
| | - Laurent Vallon
- Ecologie Microbienne, UMR CNRS 5557, USC INRA 1364, Université de Lyon, Université Lyon 1, Villeurbanne 69622, France
| | - Elsa Prudent
- Ecologie Microbienne, UMR CNRS 5557, USC INRA 1364, Université de Lyon, Université Lyon 1, Villeurbanne 69622, France
| | - Eric Peyretaillade
- EA 4678 CIDAM, BP 10448, Clermont Université, Université d'Auvergne, Clermont-Ferrand F-63001, France
| | - Mariangela Girlanda
- Ecologie Microbienne, UMR CNRS 5557, USC INRA 1364, Université de Lyon, Université Lyon 1, Villeurbanne 69622, France Istituto per la Protezione Sostenibile delle Piante (IPSP), Consiglio Nazionale delle Ricerche, Viale Mattioli 25, Turin 10125, Italy
| | - Pierre Peyret
- EA 4678 CIDAM, BP 10448, Clermont Université, Université d'Auvergne, Clermont-Ferrand F-63001, France
| | - Roland Marmeisse
- Department of Life Sciences and Systems Biology, University of Turin, viale Mattioli 25, Turin 10125, Italy Ecologie Microbienne, UMR CNRS 5557, USC INRA 1364, Université de Lyon, Université Lyon 1, Villeurbanne 69622, France
| | - Patricia Luis
- Ecologie Microbienne, UMR CNRS 5557, USC INRA 1364, Université de Lyon, Université Lyon 1, Villeurbanne 69622, France
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Jaziri F, Parisot N, Abid A, Denonfoux J, Ribière C, Gasc C, Boucher D, Brugère JF, Mahul A, Hill DRC, Peyretaillade E, Peyret P. PhylOPDb: a 16S rRNA oligonucleotide probe database for prokaryotic identification. Database (Oxford) 2014; 2014:bau036. [PMID: 24771669 PMCID: PMC4000467 DOI: 10.1093/database/bau036] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
In recent years, high-throughput molecular tools have led to an exponential growth of available 16S rRNA gene sequences. Incorporating such data, molecular tools based on target-probe hybridization were developed to monitor microbial communities within complex environments. Unfortunately, only a few 16S rRNA gene-targeted probe collections were described. Here, we present PhylOPDb, an online resource for a comprehensive phylogenetic oligonucleotide probe database. PhylOPDb provides a convivial and easy-to-use web interface to browse both regular and explorative 16S rRNA-targeted probes. Such probes set or subset could be used to globally monitor known and unknown prokaryotic communities through various techniques including DNA microarrays, polymerase chain reaction (PCR), fluorescent in situ hybridization (FISH), targeted gene capture or in silico rapid sequence identification. PhylOPDb contains 74 003 25-mer probes targeting 2178 genera including Bacteria and Archaea. Database URL: http://g2im.u-clermont1.fr/phylopdb/
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Affiliation(s)
- Faouzi Jaziri
- Clermont Université, Université d'Auvergne, EA 4678 CIDAM, BP 10448, F-63001 Clermont-Ferrand, France, UMR CNRS 6158, ISIMA/LIMOS, Clermont Université, Université Blaise Pascal, F-63173 Aubière, France, CNRS, UMR 6023, LMGE, F-63171 Aubière, France and Clermont Université, CRRI, F-63177 Aubière, France
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Ribière C, Kaboré F, Chaussenot A, Paquis-Flucklinger V, Lenne-Aurier K, Gaillet S, Boissier R, Karsenty G. Troubles vésicosphinctériens au cours du syndrome de Wolfram. Prog Urol 2013; 23:519-23. [DOI: 10.1016/j.purol.2013.03.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2013] [Accepted: 03/29/2013] [Indexed: 11/26/2022]
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Marty P, Delaunay P, Ribière C, Terrisse V, Bernard E, Le Fichoux Y, Dellamonica P. [Domestic malaria in Nice (France) probably transmitted via the airport]. Presse Med 2001; 30:488. [PMID: 11307489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
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Gaudiot N, Ribière C, Jaubert AM, Giudicelli Y. Endogenous nitric oxide is implicated in the regulation of lipolysis through antioxidant-related effect. Am J Physiol Cell Physiol 2000; 279:C1603-10. [PMID: 11029308 DOI: 10.1152/ajpcell.2000.279.5.c1603] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We studied the influence of nitric oxide (NO) endogenously produced by adipocytes in lipolysis regulation. Diphenyliodonium (DPI), a nitric oxide synthase (NOS) inhibitor, was found to completely suppress NO synthesis in intact adipocytes and was thus used in lipolysis experiments. DPI was found to decrease both basal and dibutyryl cAMP (DBcAMP)-stimulated lipolysis. Inhibition of DBcAMP-stimulated lipolysis by DPI was prevented by S-nitroso-N-acetyl-penicillamine (SNAP), a NO donor. This antilipolytic effect of DPI was also prevented by two antioxidants, ascorbate or diethyldithiocarbamic acid (DDC). Preincubation of isolated adipocytes with DPI (30 min) before exposure to DBcAMP almost completely abolished the stimulated lipolysis. Addition of SNAP or antioxidant during DPI preincubation restored the lipolytic response to DBcAMP, whereas no preventive effects were observed when these compounds were added simultaneously to DBcAMP. Exposure of isolated adipocytes to an extracellular generating system of oxygen species (xanthine/xanthine oxidase) or to H(2)O(2) also resulted in an inhibition of the lipolytic response to DBcAMP. H(2)O(2) or DPI decreased cAMP-dependent protein kinase (PKA) activation. The DPI effect on PKA activity was prevented by SNAP, ascorbate, or DDC. These results provide clear evidence that 1) the DPI antilipolytic effect is related to adipocyte NOS inhibition leading to PKA alterations, and 2) endogenous NO is required for the cAMP lipolytic process through antioxidant-related effect.
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Affiliation(s)
- N Gaudiot
- Department of Biochemistry and Molecular Biology, Faculté de Médecine de Paris-Ouest, Université René Descartes, 75006 Paris, France
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Abstract
Obesity is a major cause of human essential hypertension and there are clear evidences that abnormal kidney functions play a key role in obesity hypertension. Feeding rats a cafeteria diet has been extensively used as an experimental model to study obesity and energy balance expenditure. The present study investigated whether rats fed a cafeteria diet develop hypertension with alterations in renal alpha2-adrenoceptor subtype distribution. Weight gain induced by feeding rats a cafeteria diet during 8 weeks was associated with a marked increase in blood pressure. Insulin levels were higher in these hypertensive rats, leading to a decreased plasma glucose/insulin ratio. Based on radioligand-binding studies using [3H]-RX821002 and selective competitors, a raise in alpha2-adrenoceptor density that was solely due to an increased alpha2B-adrenoceptor subtype density was detected in the kidney of the cafeteria-fed rat. Furthermore, reverse transcription-polymerase chain reaction (RT-PCR) experiments showed an overexpression of the gene encoding the alpha2B-adrenoceptor subtype in these rats. On the other hand, despite a similar mRNA level, the alpha2A-adrenoceptor subtype was no more detectable by radioligand-binding studies in the kidney of the cafeteria-fed rat. In conclusion, cafeteria-fed rats are hypertensive, with renal alterations in alpha2-adrenoceptor distribution. These alterations, which are not related to genetic factors, may play a key role in the onset of hypertension.
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Affiliation(s)
- G Coatmellec-Taglioni
- Department of Biochemistry and Molecular Biology, Faculté de Médecine de Paris-Ouest, Université René Descartes, CJF INSERM 94-02, Paris, France
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Gaudiot N, Jaubert AM, Charbonnier E, Sabourault D, Lacasa D, Giudicelli Y, Ribière C. Modulation of white adipose tissue lipolysis by nitric oxide. J Biol Chem 1998; 273:13475-81. [PMID: 9593681 DOI: 10.1074/jbc.273.22.13475] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
In isolated adipocytes, the nitrosothiols S-nitroso-N-acetyl-penicillamine (SNAP) and S-nitrosoglutathione stimulate basal lipolysis, whereas the nitric oxide (NO.) donor 1-propamine, 3-(2-hydroxy-2-nitroso-1-propylhydrazine) (PAPA-NONOate) or NO gas have no effect. The increase in basal lipolysis due to nitrosothiols was prevented by dithiothreitol but not by a guanylate cyclase inhibitor. In addition the cyclic GMP-inhibited low Km, cyclic AMP phosphodiesterase activity was inhibited by SNAP suggesting that SNAP acting as NO+ donor increases basal lipolysis through a S-nitrosylation mediated inhibition of phosphodiesterase. Contrasting with these findings, SNAP reduced both isoproterenol-stimulated lipolysis and cyclic AMP production, whereas it failed to modify forskolin-, dibutyryl cyclic AMP-, or isobutylmethylxanthine-stimulated lipolysis, suggesting that SNAP interferes with the beta-adrenergic signal transduction pathway upstream the adenylate cyclase. In contrast with SNAP, PAPA-NONOate or NO gas inhibited stimulated lipolysis whatever the stimulating agents used without altering cyclic AMP production. Moreover PAPA-NONOate slightly reduces (30%) the hormone-sensitive lipase (HSL) activity indicating that stimulated lipolysis inhibition by NO. is linked to both inhibition of the HSL activity and the cyclic AMP-dependent activation of HSL. These data suggest that NO. or related redox species like NO+/NO- are potential regulators of lipolysis through distinct mechanisms.
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Affiliation(s)
- N Gaudiot
- Department of Biochemistry, INSERM CJF 94--02, Faculté de Médecine de Paris-Ouest, Universite René Descartes, Paris, France
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Abstract
Cellular protection against free radical reactions was measured in myocardium from ethanol-fed rats using ethanol administration in drinking water as a model of moderate alcohol intoxication. The activities of Cu,Zn-superoxide dismutase (SOD) and glutathione-S-transferase were higher in ethanol-fed rats than in controls, whereas Mn-SOD, catalase and glutathione peroxidase activities were not altered by ethanol treatment. Myocardial zinc was higher and selenium concentration lower in ethanol-fed rats than in controls. Ethanol consumption, which failed to modify the myocardial vitamin E level, did not result in increased lipid peroxidation, but decreased cytosolic and membraneous protein thiols.
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Affiliation(s)
- C Ribière
- Department of Biomedical Research on Alcoholism, Faculté de Médecine, Paris, France
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Abstract
Numerous experimental data reviewed in the present article indicate that free radical mechanisms contribute to ethanol-induced liver injury. Increased generation of oxygen- and ethanol-derived free radicals has been observed at the microsomal level, especially through the intervention of the ethanol-inducible cytochrome P450 isoform (CYP2E1). Furthermore, an ethanol-linked enhancement in free radical generation can occur through the cytosolic xanthine and/or aldehyde oxidases, as well as through the mitochondrial respiratory chain. Ethanol administration also elicits hepatic disturbances in the availability of non-safely-sequestered iron derivatives and in the antioxidant defense. The resulting oxidative stress leads, in some experimental conditions, to enhanced lipid peroxidation and can also affect other important cellular components, such as proteins or DNA. The reported production of a chemoattractant for human neutrophils may be of special importance in the pathogenesis of alcoholic hepatitis. Free radical mechanisms also appear to be implicated in the toxicity of ethanol on various extrahepatic tissues. Most of the experimental data available concern the gastric mucosa, the central nervous system, the heart, and the testes. Clinical studies have not yet demonstrated the role of free radical mechanisms in the pathogenesis of ethanol-induced cellular injury in alcoholics. However, many data support the involvement of such mechanisms and suggest that dietary and/or pharmacological agents able to prevent an ethanol-induced oxidative stress may reduce the incidence of ethanol toxicity in humans.
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Affiliation(s)
- R Nordmann
- Department of Biomedical Research on Alcoholism, University René Descartes (Paris V), France
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Abstract
An ethanol-induced oxidative stress is not restricted to the liver, where ethanol is actively oxidized, but can affect various extrahepatic tissues as shown by experimental data obtained in the rat during acute or chronic ethanol intoxication. Most of these data concern the central nervous system, the heart and the testes. An acute ethanol load has been reported to enhance lipid peroxidation in the cerebellum. This is accompanied by an increase in the cytosolic concentration of low-molecular-weight iron derivatives which may contribute to the generation of aggressive free radicals. The ethanol-induced decrease in the main antioxidant systems (superoxide dismutase, alpha-tocopherol, ascorbate and selenium) is a likely contributor to the cerebellar oxidative stress. Most of these disturbances can be prevented by allopurinol administration. Some experimental data support also the occurrence of pro- and anti-oxidant disturbances in the cerebellum and in other regions of the central nervous system after chronic ethanol administration. Chronic ethanol administration enhances lipid peroxidation in the heart. The increased conversion of xanthine dehydrogenase into xanthine oxidase as well as the activation of peroxisomal acyl CoA-oxidase linked to ethanol administration could contribute to the oxidative stress. Chronic ethanol administration elicits in the testes an enhancement in mitochondrial lipid peroxidation and a decrease in the glutathione level, which appear to be correlated to the gross testicular atrophy observed. Vitamin A supplementation attenuates the changes in lipid peroxidation, glutathione and testicular morphology. Whether the reported disturbances are involved in the pathogenesis of the tissue disorders observed in alcoholic patients remains unanswered.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- R Nordmann
- Department of Biomedical Research on Alcoholism, Université René-Descartes, Paris, France
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Nordmann R, Ribière C, Rouach H. Involvement of iron and iron-catalyzed free radical production in ethanol metabolism and toxicity. Enzyme 1987; 37:57-69. [PMID: 3032605 DOI: 10.1159/000469241] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Lipoperoxidation, a degradative process of membranous polyunsaturated fatty acids, has been suggested to represent an important mechanism in the pathogenesis of ethanol toxicity on the liver and possibly also on the brain. Catalysis by transition metals, especially iron, is involved in the biosynthesis of free radicals contributing to lipid peroxidation. Although the exact nature of the redox-active iron implicated in this catalysis is still unknown, it has been well established that lipid peroxidation can be prevented in vitro by iron chelators such as desferrioxamine. Deprivation of redox-active iron through desferrioxamine inhibits by about 50% the microsomal oxidation of ethanol in vitro and reduces very significantly in vivo the overall ethanol elimination rate in rats. Administration of desferrioxamine together with ethanol also reduces the ethanol-induced disturbances in the antioxidant defense mechanisms of the hepatocyte. It also reduces in mice both the severity of physical dependence on ethanol and lethality following the acute administration of a narcotic dose of ethanol. Chronic overloading of rats with iron results, on the opposite, in an increased rate of ethanol elimination, although alcohol dehydrogenase and catalase activities are reduced and cytochrome P-450 depleted in the liver of such iron-overloaded animals. The magnitude of the ethanol-induced increase in lipid peroxidation and decrease in the major membranous antioxidant, alpha-tocopherol, is exacerbated in iron-overloaded rats. Several disturbances of iron metabolism have been reported in human alcoholics. Their contribution to ethanol toxicity appears very likely in the case of hepatic siderosis associated with alcohol abuse. Ethanol could however disturb iron metabolism even in the absence of gross abnormalities of the total iron stores. It is suggested that ethanol intoxication could increase cellular redox-active iron, thus contributing to an enhanced steady-state concentration of reactive-free radicals. This oxidative stress would lead to lipoperoxidative damage and cellular injury.
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Nordmann R, Ribière C, Rouach H, Sinaceur J, Sabourault D. [Alcohol and free radicals]. Bull Acad Natl Med 1985; 169:1201-6. [PMID: 3914336] [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: 01/08/2023]
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Weber P, Sinaceur J, Ribière C, Le Pennec MP, Ghnassia JC, Nordmann R. [Superoxide dismutase and catalase activity in HeLa 229 cells infected with Chlamydia trachomatis]. Pathol Biol (Paris) 1985; 33:179-82. [PMID: 3892444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Cytosolic superoxide dismutase (SOD) activity was found to increase with time during HeLa cell culture, this increase being due exclusively to Mn-SOD. Infection of the cells by Chlamydia trachomatis resulted in a further enhancement of this Mn-SOD activity, whereas cytosolic catalase activity was decreased in these infected cells. Superoxide (O-2.) being able to induce Mn-SOD and to inhibit catalase, these data suggest that Chlamydia trachomatis infection could be responsible for an increase in O-2. production by the infected HeLa cells.
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Abstract
Manganese superoxide dismutase (Mn-SOD) studied during ethanol vapor inhalation shows no changes during the inhalation period (4 days) and a transient increase 12 hours after ethanol withdrawal. A significant decrease in cytosolic Cu-Zn-SOD is found at the end of the inhalation period and was sustained during 48 hours following ethanol withdrawal. It is suggested that this decrease in Cu-Zn-SOD activity might be related to an inactivation of the enzyme linked to the increase in hydroxyl radical production related to ethanol metabolism. Cytosolic catalase is reduced at the end of the ethanol inhalation period. This decrease could be related to an enhanced superoxide radical concentration linked to the reduced Cu-Zn-SOD activity.
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Nordmann R, Giudicelli Y, Beaugé F, Clément M, Ribière C, Rouach H, Nordmann J. Studies on the mechanisms involved in the isopropanol-induced fatty liver. Biochim Biophys Acta 1973; 326:1-11. [PMID: 4756119 DOI: 10.1016/0005-2760(73)90021-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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