The liver is a multifunctional organ, which undergoes rapid changes during the developmental period and relies on tightly-regulated gene expression. Little is known regarding the complex expression patterns of mRNAs during the early stages of human liver development in comparison to post-natal livers.
Comprehensive gene and microRNA expression profiling reveals a role for microRNAs in human liver development.
Specimen part
View SamplesmiR-34a is strongly induced upon TPA-induced megakaryocyte differentiation of K562 cells. To investigate the gene networks regulated by this miRNA during the process of differentiation we performed gene microarray analysis in K562 cells overexpressing miR-34a or a control sequence.
miR-34a contributes to megakaryocytic differentiation of K562 cells independently of p53.
Cell line
View SamplesPurpose: To identify genes that are differentially expressed in oligodendrocytes between control and rraga mutant zebrafish, we performed RNA seq using the Illumina platform Overall design: Oligodendrocytes were isolated from control and rraga mutant zebrafish at 5 days post fertilization using FACS sorting of Cldnk:GFP positive cells. RNA was extracted from these cells and sequenced using standard Illumina protocol.
The Lysosomal Transcription Factor TFEB Represses Myelination Downstream of the Rag-Ragulator Complex.
Cell line, Subject
View SamplesWe aimed to determine whether overexpression of endoderm-specific miRNA may affect hESC differentiation. To this end, we analyzed the effect of lentiviral-based overexpression of liver-specific miR-122 on hESC differentiation, using genomewide gene microarrays. Stable overexpression of endoderm-specific miR-122 in hESC resulted in increased expression of a few endodermal markers in spontaneously-differentiating hESC, but had no clear effect on directing differentiation towards an endodermal fate; rather, it delayed the general differentiation of hESC.
MicroRNA expression patterns and function in endodermal differentiation of human embryonic stem cells.
Cell line
View SamplesMicroRNAs (miRNAs) are small RNAs that play important regulatory roles in many cellular pathways. MiRNAs associate with members of the Argonaute (Ago) protein family and bind to partially complementary sequences on mRNAs and induce translational repression or mRNA decay. MiRNA expression can be controlled by transcription factors and can therefore be cell type- or tissue-specific. Here we have analyzed miRNA expression profiles in murine monocyte-derived dendritic cells (DCs) and macrophages upon stimulation with LPS, LDL, eLDL and oxLDL to identify not only stimuli-specific miRNA, but also to identify a hierarchical miRNA system involving miR-155. For this, miR-155 knockout dendritic cells and macrophages were also sequenced using the same stimuli. Overall design: Sequencing of murine monocyte-derived dendritic cells and macrophages (each wild type and miR-155 knock out cells) matured and stimulated, respectively, by LPS, oxLDL, eLDL or LDL.
A miR-155-dependent microRNA hierarchy in dendritic cell maturation and macrophage activation.
Specimen part, Cell line, Subject
View SamplesType I IFN-signaling suppresses an excessive IFN-{gamma} response and prevents lung damage and chronic inflammation following Pneumocystis (PC)-infection and clearance in CD4 T cell-competent mice.
Type-I IFN signaling suppresses an excessive IFN-gamma response and thus prevents lung damage and chronic inflammation during Pneumocystis (PC) clearance in CD4 T cell-competent mice.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
The mammalian TRIM-NHL protein TRIM71/LIN-41 is a repressor of mRNA function.
Specimen part, Cell line
View SamplesWe identify mammalian TRIM71 as repressor of mRNAs that inhibits translation and affects mRNA stability.
The mammalian TRIM-NHL protein TRIM71/LIN-41 is a repressor of mRNA function.
Cell line
View SamplesmicroRNAs (miRNAs) are small non-coding RNAs that function in literally all cellular processes. miRNAs interact with Argonaute (Ago) proteins and guide them to specific target sites located in the 3’ untranslated region (UTR) of target mRNAs leading to translational repression and deadenylation-induced mRNA degradation. Most miRNAs are processed from hairpin-structured precursors by the consecutive action of the RNase III enzymes Drosha and Dicer. However, processing of miR-451 is Dicer-independent and cleavage is mediated by the endonuclease Ago2. Here we have characterized miR-451 sequence and structure requirements for processing as well as sorting of miRNAs into different Ago proteins. Pre-miR-451 appears to be optimized for Ago2 cleavage and changes result in reduced processing. In addition, we show that the mature miR-451 only associates with Ago2 suggesting that mature miRNAs are not exchanged between different members of the Ago protein family. Based on cloning and deep sequencing of endogenous miRNAs associated with Ago1-3, we do not find evidence for miRNA sorting in human cells. However, Ago identity appears to influence the length of some miRNAs, while others remain unaffected. Overall design: Examination of miRNAs associated with endogenous human Ago1-4 in HeLa cells
microRNAs associated with the different human Argonaute proteins.
No sample metadata fields
View SamplesWe identify mammalian TRIM71 as repressor of mRNAs that inhibits translation and affects mRNA stability. In this data set we compare the expression profile of mouse ES upon Trim71 KD versus that of the parental cells.
The mammalian TRIM-NHL protein TRIM71/LIN-41 is a repressor of mRNA function.
Specimen part
View Samples