Purpose: Next-generation sequencing (NGS) has revolutionized systems-based analysis of cellular pathways. The goals of this study are to compare NGS transcriptome profiling (RNA-seq) from whole eye, after removal of the lens and cornea from 1-2 month old miR-211-/- mice and compare it with wt mice Methods: Whole eye (after removal of the lens and cornea) mRNA profiles of 1-2 month old wild-type (WT) and neural miR-211-/-mice were generated by deep sequencing, in multiple biological replicates, five for WT and six for miR-211-/- animals, using Illumina GAIIx. The sequence reads that passed quality filters were analyzed at the transcript isoform level with two methods: Burrows–Wheeler Aligner (BWA) followed by ANOVA (ANOVA) and TopHat followed by Cufflinks. qRT–PCR validation was performed using TaqMan and SYBR Green assays RNA-Seq libraries were prepared from whole eye, after removal of the lens and cornea from miR-211-/- mice. Results: Each library was sequenced using 100 bp paired-end sequencing on the Illumina HiSeq 1000 system. Gene abundances from RNA-Seq data were quantified using RSEM45. Using an optimized data analysis workflow, we mapped about 30 million sequence reads per sample to the mouse genome. This approach yielded read count values for a total of 38253 mouse genes annotated in GenCode. We only considered genes that had at least 1 count per million in at least five out of 11 samples as expressed, yielding a total of 15590 genes. Next we performed differential gene expression analysis to determine the transcriptional effects of miR-211 deletion. This analysis yielded a total of 63 genes that were differentially expressed with a False Discovery Rate (FDR) <0.1 (Fig. 4). Of these, the expression levels of 61 genes were significantly decreased upon miR-211 deletion, while only 2 genes were upregulated. Conclusions: Our study represents the first detailed analysis of whole eye transcriptomes, with biologic replicates, generated by RNA-seq technology on miR-211-/-. Overall design: Whole eye (after removal of the lens and cornea) mRNA profiles of 1-2 month old wild-type (WT) and neural miR-211-/-mice were generated by deep sequencing, in multiple biological replicates, five for WT and six for miR-211-/- animals, using Illumina GAIIx.
MiR-211 is essential for adult cone photoreceptor maintenance and visual function.
Specimen part, Subject
View SamplesInnate lymphoid cells (ILC) represent innate versions of T helper and cytotoxic T cells that differentiate from committed ILC precursors (ILCP). Still, how ILCP relate to mature tissue-resident ILCs remains unclear. We observed that a population of CD117+ ILC from peripheral blood (PB) of healthy donors does not represent any conical ILC subset, but expressed marker (CD117) commonly expressed by hemato-lymphoid progenitors. We therefore hypothesized PB CD117+ ILC might include uncommitted lymphoid precursors. In order to further understand the identity of PB CD117+ ILC, we profiled the transcriptome of highly purified circulating CD117+ ILC compared to CD34+ HSC, the latter representing immature hematopoietic progenitors with multi-lineage potential. Clear differences in gene expression profiles emerged, with a large cluster of 1540 genes expressed at substantially higher levels in CD117+ ILC. In contrast, CD34+ HSC cells highly expressed genes involved in the broad development of diverse hematopoietic lineages. Compared to HSC, CD117+ ILC express high levels of TF that have been shown to be essential for murine ILC development and we did not detect transcripts characteristic of T and B cells development. Transcriptomic analysis suggested that CD117+ ILC represent lymphoid-biased progenitors carrying a TF expression profile resembling a multi-potent ILC precursor (ILCP). Overall design: CD117+ ILC and CD34+ HSC were freshly isolated by FACS of peripheral blood of two healthy adult individuals. In total, 4 samples were analyzed and comparing between two cell populations.
Systemic Human ILC Precursors Provide a Substrate for Tissue ILC Differentiation.
Specimen part, Disease, Disease stage, Treatment, Subject
View SamplesMale and female CD-1 mice were administered dietary Phenobarbital for 2 or 7 days. In-life, enzyme activity, cell proliferation, genomic analysis, and Bench-mark dose modeling was carried out.
Dose-response modeling of early molecular and cellular key events in the CAR-mediated hepatocarcinogenesis pathway.
Specimen part
View SamplesWe examined the transcriptional changes modulated by KDM1A inhibitor NCD-38 by performing global transcriptome analysis. Glioma Stem Cells (GSC10) were treated with either vehicle or NCD-38 for 24 h and the isolated RNA was utilized for RNA-seq analysis. Our results demonstrated that NCD-38 modulated several genes that are involved in unfolded protein response, endoplasmic reticulum stress pathway and NRF-2 mediated oxidative stress response. Overall design: Total RNA was isolated from the GSC10 cells that were treated with vehicle or NCD-38 for 24 hours. Illumina TruSeq RNA Sample Preparation was performed following manufacturer''s protocol. Samples were run on an Illumina HiSeq 2000 in duplicate. The combined raw reads were aligned to UCSC hg19 and genes were annotated by Tophat. Genes were annotated and quantified by HTSeq-DESeq pipeline.
Novel KDM1A inhibitors induce differentiation and apoptosis of glioma stem cells via unfolded protein response pathway.
Treatment, Subject
View SamplesHeme-regulated eIF2 kinase (HRI) is essential for the survival of erythroid precursors in iron and heme deficiency and it also plays a protective role in red blood cell diseases of erythroid protoporphyria and -thalassemia. In this study, we demonstrated for the first time the impairment of GATA-1 and Fog-1 expressions in iron deficiency and the impairment of GATA-1 expression in -thalassemia. Furthermore, HRI is necessary to maintain the GATA-1/Fog-1 induced functions in erythroid differentiation, cell cycle and cell survival by sustaining both expressions of GATA-1 and Fog-1 in iron deficiency and in -thalassemia.
Haem-regulated eIF2alpha kinase is necessary for adaptive gene expression in erythroid precursors under the stress of iron deficiency.
Specimen part
View Samples5 arrays from obese insulin-resistant and lean insulin-sensitive females adipose tissue at fasting and after 3h hyperinsulinemia
Adipose tissue gene expression analysis reveals changes in inflammatory, mitochondrial respiratory and lipid metabolic pathways in obese insulin-resistant subjects.
Sex, Specimen part
View SamplesAnalysis of gene expression profiles of epididymal fat from DIO rats
Assessment of diet-induced obese rats as an obesity model by comparative functional genomics.
No sample metadata fields
View SamplesUnderstanding the biological potential of fetal stem/progenitor cells will help define mechanisms in liver development and homeostasis. We isolated epithelial fetal human liver cells and established phenotype-specific changes in gene expression during continuous culture conditions. Fetal human liver epithelial cells displayed stem cell properties with multilineage gene expression, extensive proliferation and generation of mesenchymal lineage cells, although the initial epithelial phenotype was rapidly supplanted by meso-endodermal phenotype in culture. This meso-endodermal phenotype was genetically regulated through cytokine signaling, including transforming growth factor-b, bone morphogenetic protein, fibroblast growth factors, and other signaling pathways. Reactivation of HNF-3a (FOXA1) transcription factor, a driver of hepatic specification in the primitive endoderm, indicated that the meso-endodermal phenotype represented an earlier developmental stage of cells. We found that fetal liver epithelial cells formed mature hepatocytes in vivo, including after genetic manipulation using lentiviral vectors, offering convenient assays for analysis of further cell differentiation and fate. Taken together, these studies demonstrated plasticity in fetal liver epithelial stem/progenitor cells, offered paradigms for defining mechanisms regulating lineage switching in stem/progenitor cells, and provided potential avenues for regulating cell phenotypes for applications of stem/progenitor cells, such as for cell therapy.
Phenotype reversion in fetal human liver epithelial cells identifies the role of an intermediate meso-endodermal stage before hepatic maturation.
Specimen part
View SamplesWe performed single-cell RNA sequencing (RNA-seq) during the in vitro transition of mouse ESCs (mESCs) from a naïve pluripotent state into epiblast-like cells (EpiLCs), a primed pluripotent state. We derived pseudotime expression trajectories to investigate transcript dynamics of key metabolic regulators, with the aim to identify metabolic pathways that potentially impact on early embryonic cell state transitions. Overall design: Single-cell RNA-seq during the in vitro differentiation of mouse embryonic stem cells (ESCs) in 2i culture conditions (time point t=0h) into epiblast-like cells (EpiLCs) at time points t=24h and t=48h.
Metabolic regulation of pluripotency and germ cell fate through α-ketoglutarate.
Specimen part, Cell line, Subject
View Sampleswe report single cell expression profiles of embryonic cells (from day 5 to 11) of pig embryo development. Overall design: single cell transcriptomes were generated from 220 cells obtained from 28 embryos (15 male and 13 female)
Pluripotency and X chromosome dynamics revealed in pig pre-gastrulating embryos by single cell analysis.
Specimen part, Subject
View Samples