Human metagenome
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA417306 | ENA |
REPOSITORIES: ENA
Similar Datasets
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.
2017-07-19 | PXD005780 | Pride
Project description:This study compared gene expression in murine bcr-abl positive acute lymphoblastic leukemia cells in vivo in allogeneic BMT recipients compared to syngneneic BMT recipients.
2009-08-06 | GSE17497 | GEO
Project description:The acute respiratory distress syndrome (ARDS) is a highly lethal syndrome characterized by hypoxemia and bilateral lung infiltrates in response to an inciting event such as sepsis. Allogeneic bone marrow transplantation (BMT) is a life-saving treatment for patients with hematologic malignancies that can be complicated by ARDS. We sought to identify blood gene expression signatures that distinguish whether ARDS in BMT may be a distinct pathobiologic entity from ARDS in non-BMT patients. RNA-Seq was used to measure whole blood transcript expression differences between 26 patients meeting the Berlin definition of ARDS: 8 patients without BMT and 5 BMT patients with ARDS from the Brigham and Women’s Registry of Critical Illness (RoCI), as well as 7 non-BMT patients with sepsis and 6 BMT patients with sepsis. RNA was globin cleared using the Ambion GLOBINclear kit prior to preparation of poly(A)-selected RNA-Seq libraries with the Illumina TruSeq method. An Illumina HiSeq 2500 instrument was used to generate 75 base pair paired-end reads, which were aligned to the hg38 reference genome using STAR. Differential expression analysis was performed using DESeq2.
2018-12-31 | GSE84439 | GEO
Project description:The prevailing theory of autoimmune disease, that the body creates autoantibodies that attack “self,” was developed during an era when culture-based methods vastly underestimated the number of microbes capable of persisting in and on Homo sapiens. Thanks to the advent of culture-independent tools, the human body is now known to harbor billions of microbes whose collective genomes work in concert with the human genome. Thus, the human genome can no longer be studied in isolation. Some of these microbes persist by slowing the activity of the vitamin D receptor nuclear receptor, affecting the expression of endogenous antimicrobials and other key components of the innate immune system. It seems that bacteria that cause autoimmune disease accumulate over a lifetime, with individuals picking up pathogens with greater ease over time, as the immune response becomes increasingly compromised. Any one autoimmune disease is likely due to many different microbes within the metagenomic microbiota. This helps explain the high levels of comorbidity observed among patients with autoimmune conditions. What are commonly believed to be autoantibodies may instead be created in response to this metagenomic microbiota when the adaptive immune system is forced to deal with disintegration of infected cells. Similarly, haplotypes associated with autoimmune conditions vary widely among individuals and populations. They are more suggestive of a regional infectious model rather than a model in which an illness is caused by inherited variation of HLA haplotypes
| S-EPMC7121718 | biostudies-literature
Project description:BMCs from BMT recipient mice transplanted with BMCs-expressing EZH2-mutant were analyzed using Affymetrix GeneChip Mouse430_2 BMCs were extracted from BMT recipient mice transplanted with ABCG2-expressing BMCs and analyzed using Affymetrix GeneChip Mouse430_2
2017-07-01 | GSE100507 | GEO
Project description:This study reports the evolution of the donor CD8 effector T cell transcriptomes at multiple sites and time points within the same host following allo-SCT. Donor derived CD8+ T cells were flow sorted from multiple organs in mice developing GVHD in two clinically relevant murine models of H-2b MHC-matched minor antigen-mismatched BMT: (1) B6>129 model – transfer of C57BL/6 polyclonal CD4+ and CD8+ T cells into 129/Sv BMT recipients; (2) F>M – transfer of monoclonal HY-specific TCR-transgenic MataHari CD8+ T cells into C57BL/6 male BMT recipients. To test the effect of early lymph node egress on CD8 effector T cell transcription profile, BMT recipients were treatment with FTY720 (1.0mg/kg/day, from D+3 to D+7).
2018-03-28 | E-MTAB-5380 | biostudies-arrayexpress
Project description:Bone Marrow Transplantation (BMT) depends greatly on transendothelial migration of stem cells from bloodstream to bone marrow. Therefore Bone Marrow Endothelial Cells (BMECs) becomes an essential component for successful BMT. Since BMT requires prior radiation therapy therefore it is necessary to study the behaviour of BMEC in irradiated and radiprotective conditions. We have conducted transcriptome profiling of Bone Marrow Endothelial Cells (BMECs) to identify the signalling mechanisms required for transendothelial migration to bone marrow under irradiated and radioprotected conditions.
2020-09-30 | GSE108722 | GEO
Project description:This study reports the evolution of the donor CD8 effector T cell transcriptomes at multiple sites and time points within the same host following allo-SCT. Donor derived CD8+ T cells were flow sorted from multiple organs in mice developing GVHD in two clinically relevant murine models of H-2b MHC-matched minor antigen-mismatched BMT: (1) B6>129 model – transfer of C57BL/6 polyclonal CD4+ and CD8+ T cells into 129/Sv BMT recipients; (2) F>M – transfer of monoclonal HY-specific TCR-transgenic MataHari CD8+ T cells into C57BL/6 male BMT recipients.
2017-01-16 | E-MTAB-5378 | biostudies-arrayexpress