Gut microbiota and the circadian clock are both key regulators of the metabolic processes. Although recent evidence points to the impact of the circadian clock on microbiota, gut microbiota effect on diurnal host gene expression remains elusive. A transcriptome analysis of germ-free mice reveals subtle changes in circadian clock gene expression. However, a lack of microbiome leads to liver feminization and alters the expression of male-specific genes involved in lipid metabolism and xenobiotic detoxification associated with sustained activation of the Growth Hormone pathway. These results emphasize the mutual interaction of gut microbiota and its host even on unexpected functions. Overall design: Total RNA-Seq of testis and ovaries of conventional raised (convR) and Germ-free (GF) female mice under ad libitum feeding regime.
The Mouse Microbiome Is Required for Sex-Specific Diurnal Rhythms of Gene Expression and Metabolism.
Sex, Specimen part, Cell line, Subject
View SamplesGut microbiota and the circadian clock are both key regulators of the metabolic processes. Although recent evidence points to the impact of the circadian clock on microbiota, gut microbiota effect on diurnal host gene expression remains elusive. A transcriptome analysis of germ-free mice reveals subtle changes in circadian clock gene expression. However, a lack of microbiome leads to liver feminization and alters the expression of male-specific genes involved in lipid metabolism and xenobiotic detoxification associated with sustained activation of the Growth Hormone pathway. These results emphasize the mutual interaction of gut microbiota and its host even on unexpected functions. Overall design: Total RNA-Seq of primary hepatocytes treated with serum of conventionally raised (convR) and Germ-free (GF) male and female mice.
The Mouse Microbiome Is Required for Sex-Specific Diurnal Rhythms of Gene Expression and Metabolism.
Specimen part, Subject
View SamplesGut microbiota and the circadian clock are both key regulators of the metabolic processes. Although recent evidence points to the impact of the circadian clock on microbiota, gut microbiota effect on diurnal host gene expression remains elusive. A transcriptome analysis of germ-free mice reveals subtle changes in circadian clock gene expression. However, a lack of microbiome leads to liver feminization and alters the expression of male-specific genes involved in lipid metabolism and xenobiotic detoxification associated with sustained activation of the Growth Hormone pathway. These results emphasize the mutual interaction of gut microbiota and its host even on unexpected functions. Overall design: Total RNA-Seq of Germ-free (GF) male mice liver injected with ghrelin.
The Mouse Microbiome Is Required for Sex-Specific Diurnal Rhythms of Gene Expression and Metabolism.
Sex, Specimen part, Cell line, Treatment, Subject
View SamplesGut microbiota and the circadian clock are both key regulators of the metabolic processes. Although recent evidence points to the impact of the circadian clock on microbiota, gut microbiota effect on diurnal host gene expression remains elusive. A transcriptome analysis of germ-free mice reveals subtle changes in circadian clock gene expression. However, a lack of microbiome leads to liver feminization and alters the expression of male-specific genes involved in lipid metabolism and xenobiotic detoxification associated with sustained activation of the Growth Hormone pathway. These results emphasize the mutual interaction of gut microbiota and its host even on unexpected functions. Overall design: Total RNA-Seq of Germ-free (GF) male mice liver injected with growth hormone.
The Mouse Microbiome Is Required for Sex-Specific Diurnal Rhythms of Gene Expression and Metabolism.
Sex, Specimen part, Cell line, Treatment, Subject
View SamplesThe circadian regulation of transcriptional processes has a broad impact on cell metabolism. Here, we compared the diurnal transcriptome of human skeletal muscle conducted on serial muscle biopsies in vivo with profiles of human skeletal myotubes synchronized in vitro. Extensive rhythmic transcription was observed in human skeletal muscle in comparison to in vitro cell culture. However, nearly half of the in vivo rhythmicity was lost at the mRNA accumulation level. siRNA-mediated clock disruption in primary myotubes significantly affected the expression of ~8% of all genes, with impact on glucose homeostasis and lipid metabolism. Genes involved in GLUT4 expression, translocation and recycling were negatively affected, whereas lipid metabolic genes were altered to promote activation of lipid utilization. Moreover, basal and insulin stimulated glucose uptake were significantly reduced upon CLOCK depletion. Altogether, our findings suggest an essential role for cell-autonomous circadian clocks in coordinating muscle glucose homeostasis and lipid metabolism in humans. Overall design: 100 samples from 2 donors. Together with GSE108539, part of the same study described above.
Transcriptomic analyses reveal rhythmic and CLOCK-driven pathways in human skeletal muscle.
Specimen part, Subject, Time
View SamplesWine biological aging is a wine making process used to produce specific beverages in several countries in Europe, including Spain, Italy, France, and Hungary. This process involves the formation of a velum at the surface of the wine. Here, we present the first large scale comparison of all European flor strains involved in this process. We inferred the population structure of these European flor strains from their microsatellite genotype diversity and analyzed their ploidy. We show that almost all of these flor strains belong to the same cluster and are diploid, except for a few Spanish strains. Comparison of the array hybridization profile of six flor strains originating from these four countries, with that of three wine strains did not reveal any large segmental amplification. Nonetheless, some genes, including YKL221W/MCH2 and YKL222C, were amplified in the genome of four out of six flor strains. Finally, we correlated ICR1 ncRNA and FLO11 polymorphisms with flor yeast population structure, and associate the presence of wild type ICR1 and a long Flo11p with thin velum formation in a cluster of Jura strains. These results provide new insight into the diversity of flor yeast and show that combinations of different adaptive changes can lead to an increase of hydrophobicity and affect velum formation.
Population structure and comparative genome hybridization of European flor yeast reveal a unique group of Saccharomyces cerevisiae strains with few gene duplications in their genome.
No sample metadata fields
View SamplesInflammatory breast cancer (IBC) is an aggressive form of BC poorly defined at the molecular level. We compared the molecular portraits of 63 IBC and 134 non-IBC (nIBC) clinical samples. Genomic imbalances of 49 IBCs and 124 nIBCs were determined using high-resolution array-comparative genomic hybridization, and mRNA expression profiles of 197 samples using whole-genome microarrays. Genomic profiles of IBCs were as heterogeneous as those of nIBCs, and globally relatively close. However, IBCs showed more frequent complex patterns and a higher percentage of genes with CNAs per sample. The number of altered regions was similar in both types, although some regions were altered more frequently and/or with higher amplitude in IBCs. Many genes were similarly altered in both types; however, more genes displayed recurrent amplifications in IBCs.
High-resolution comparative genomic hybridization of inflammatory breast cancer and identification of candidate genes.
Age
View SamplesThe study demontrates differences in the transcriptome ( both of protein coding transcripts and long non-coding RNAs) in the unilateral ureteric obstruction model of renal fibrosis. Overall design: Renal tissue was studied from animals undergoing sham operation (as controls) or right ureteric ligation. Animals were sacrificed 2 and 8 days following ligation and the right kidney tissue was examined.
Whole-transcriptome analysis of UUO mouse model of renal fibrosis reveals new molecular players in kidney diseases.
Sex, Age, Specimen part, Cell line, Subject
View SamplesThe overall goal of our studies is to elucidate the cellular and molecular mechanism by which the transcription factor Casz1 functions in murine heart development. We established that Casz1 is expressed in myocardial progenitor cells beginning at E7.5 and in differentiated cardiomyocytes throughout development. We generated conditional Casz1 knockout mice to show that ablation of CASZ1 in Nkx2.5-positive cardiomyocytes leads to cardiac hypoplasia, ventricular septal defects and lethality by E13.5. To identify the pathways and networks by which Casz1 regulates cardiomyocyte development, we used RNA-Seq and identified genes involved in cell proliferation are upregulated in Casz1 mutants compared to wild-type littermates. We conclude that Casz1 is essential for cardiac development and has a pivotal role in regulating part of the cardiac transcriptional program. Overall design: 3 biological replicates of the two genotypes (Nkx2-5+/+,Casz1f/+ and Nkx2-5Cre/+,Casz1f/f) were used for RNA-seq to determine genes that are differentially expressed in the murine heart when Casz1 is mutated. Nkx2-5+/+,Casz1f/+ were used as wild-type controls for comparison.
Casz1 is required for cardiomyocyte G1-to-S phase progression during mammalian cardiac development.
No sample metadata fields
View SamplesAnalysis of the response to arginine of the Escherichia coli K-12 transcriptome by microarray hybridization and real-time quantitative PCR provides a first coherent quantitative picture of the ArgR-mediated repression of arginine biosynthesis and uptake genes. Transcriptional repression was shown to be the major control mechanism of the biosynthetic genes, leaving only limited room for additional transcriptional or post-transcriptional regulations. The art genes coding for the specific arginine uptake system are subject to ArgR-mediated repression,
The arginine regulon of Escherichia coli: whole-system transcriptome analysis discovers new genes and provides an integrated view of arginine regulation.
No sample metadata fields
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