Project description:Many diseases in digestive system have been improved related to the uptake of high-carbohydrate diet. The underlying mechanism might be related the changes of genes expression in digestive system. We used microarrays to detail the global programme of gene expression during this process.
Project description:By using metagenome resolved protein stable isotope probing (protein-SIP) through incubations of identical reactors with 13C labelled bicarbonate over a period of 48 hours, the study aims to map differences in the metabolic behaviour of the microbial community during anaerobic digestion.
Project description:In this study we examined an anaerobic digester reactor fed with cellulose in order to identify cellulose degrading microorganisms using a culture independent approach. A metagenome was linked to the newly synthesized proteins involved by cellulose, by investigation of labelled proteins (Protein-SIP). The study aims at identifying microorganisms involved in the degradation of plant-based biomass.
Project description:Two parallel anaerobic digestion lines were designed to match a "bovid-like" digestive structure. Each of the lines consisted of two Continuous Stirred Tank Reactors placed in series and separated by an acidic treatment step. The first line was inoculated with industrial inocula whereas the second was seeded with cow digestive tract contents. After three month of continuous sewage sludge feeding, samples were recovered for shotgun metaproteomic and DNA-based analysis. Strikingly, protein inferred and 16S rDNA tags based taxonomic community profiles were not fully consistent. Principal Component analysis however revealed a similar clustering pattern of the samples, suggesting that reproducible methodological and/or biological factors underlie this observation. The performances of the two digestion lines did not differ significantly and the cow derived inocula did not establish in the reactors. A low throughput metagenomic dataset (3.4x106 reads, 1.1 Gb) was also generated for one of the samples. It allowed a substantial increase of the analysis depth (increase of the spectral identification rate). For the first time, a high level of proteins expressed by members of the "Candidatus Competibacter" group is reported in an anaerobic digester, a key microbial player in environmental bioprocess communities.
Project description:Anorectal malformations (ARMs) are among the most common congenital terminal digestive tract malformations. Circular RNAs (circRNAs), a novel type of endogenous non-coding RNAs, play roles in the development of the digestive system; however, their contributions to the pathogenesis of ARMs are not well-established. Many dysregulated circRNAs as the primary factor could play an important role in the development of anorectum. We used high-throughput sequencing to reveal the regulatory mechanism of gene expression underlying the development of anorectal malformations. These results provide original insight into the roles of circRNAs in ARMs and provide a valuable resource for further analyses of molecular mechanisms and signaling networks.
2021-05-06 | GSE159306 | GEO
Project description:salinity-contained anaerobic system (archaea)
| PRJNA740143 | ENA
Project description:salinity-contained anaerobic system (bacteria)
| PRJNA740145 | ENA
Project description:magnetite-amended anaerobic system (bacteria)