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Mouse gut metagenome

ABSTRACT: Effect of monocrotophos on gut metatranscriptome

PROVIDER: PRJNA356127 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR5074530_1.fastq.gz	Fastqsanger.gz
	SRR5074530_2.fastq.gz	Fastqsanger.gz
	SRR5074531_1.fastq.gz	Fastqsanger.gz
	SRR5074531_2.fastq.gz	Fastqsanger.gz
	SRR5074528_1.fastq.gz	Fastqsanger.gz

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Relating human gut metagenome and metaproteome

Project description:Gut microbiome research is rapidly moving towards the functional characterization of the microbiota by means of shotgun meta-omics. Here, we selected a cohort of healthy subjects from an indigenous and monitored Sardinian population to analyze their gut microbiota using both shotgun metagenomics and shotgun metaproteomics. We found a considerable divergence between genetic potential and functional activity of the human healthy gut microbiota, in spite of a quite comparable taxonomic structure revealed by the two approaches. Investigation of inter-individual variability of taxonomic features revealed Bacteroides and Akkermansia as remarkably conserved and variable in abundance within the population, respectively. Firmicutes-driven butyrogenesis (mainly due to Faecalibacterium spp.) was shown to be the functional activity with the higher expression rate and the lower inter-individual variability in the study cohort, highlighting the key importance of the biosynthesis of this microbial by-product for the gut homeostasis. The taxon-specific contribution to functional activities and metabolic tasks was also examined, giving insights into the peculiar role of several gut microbiota members in carbohydrate metabolism (including polysaccharide degradation, glycan transport, glycolysis and short-chain fatty acid production). In conclusion, our results provide useful indications regarding the main functions actively exerted by the gut microbiota members of a healthy human cohort, and support metaproteomics as a valuable approach to investigate the functional role of the gut microbiota in health and disease.

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Effect of monocrotophos on gut metatranscriptome

Project description:Purpose: To study the differential expression of gut bacterial mRNAs during chronic organophosphate treatment. Methods: Balb/c mice were treated with organophosphate (monocrotophos 28 ug/kg body weight/day) directly in drinking water for 180 days. Glucose tolerance tests indicated the induction of glucose intolerance. The total RNA was isolated by using TRIZOL from the cecal tissue that is cleared off fecal contents and subsequently the eukaryotic and bacterial rRNAs were removed by using MicrobExpress and MicrobEnrich kits (Ambion). Subsequently, RNA library was contructed using illumina kit as per manufacturer's instructions. Results: The reads were annotated to the reference human gut microbiome database and we found differential expression of large number of genes especially those involved in organophosphate degradation. Our subsequent studies proved that gut microbial degradation of organophosphates induces glucose intolerance via gluconeogenesis. Conclusions: Chronic organophosphate-induced hyperglycemia is mediated by the organosphosphate-degrading potential of gut microbiota.

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