Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Comparing the transcriptoms of Mettl14fl/fl and Mettl14 fl/fl; Olig2-Cre oligodendrocyre precursor cell (OPCs) and mature oligodendrocytes using Next Generation Sequencing

ABSTRACT: The goal of the experiment is to determine the transcriptome alternation of Mettl14 gene inactivation in different oligodendrocyte lineage cells(OPCs and mature oligodendrocytes), by comparing the Mettl14 fl/fl; Olig2-Cre(mutant) and Mettl14fl/fl(control) OPC and mature oligodendrocyte transcriptoms. Method: RNA collected from Mettl14fl/fl control and Mettl14fl/fl;Olig2-Cre OPC and oligodendrocytes was collected by standard protocols, sequenced using next generation high throughput sequencing technology, and processed in triplicate to produce a transcriptome profile deliminating the variable gene expression in the mutant cells. Results: We identified 11809 transcripts present in the OPC transcriptome, 586 were significantly upregulated and 177 were significantly downregulated in the mutant cells; Among 12,542 transcripts present in mature oligodendrocytes, 1388 transcripts were upregulated and 1247 were downregulated in the mutant cells(significance: q-value<0.001; fold changes (FC) that exceed 2.0 fold (log2 |FC|>1) in expression and an expression level that exceeds two counted transcripts per million (log2 |CPM| >1)) Conclusions: Mettl14 ablation differentially alters the OPC and oligodendrocyte transcriptomes

ORGANISM(S): Mus musculus

PROVIDER: GSE124243 | GEO | 2019/12/31

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Candidate pathways for promoting differentiation and quiescence of oligodendrocyte progenitor-like cells in glioblastoma

Project description:The mature CNS contains PDGFRA+ ‘oligodendrocyte progenitor cells’ (OPC) which may remain quiescent, proliferate, or differentiate into oligodendrocytes. In human gliomas, rapidly proliferating Olig2+ cells resembling OPCs are frequently observed. We sought to identify, in vivo, candidate pathways uniquely required for OPC differentiation or quiescence. Using the bacTRAP methodology, we generated and analyzed mouse lines for translational profiling the major cells types (including OPCs), in the normal mouse brain. We then profiled oligodendoglial (Olig2+) cells from a mouse model of Pdgf-driven glioma. This analysis confirmed that Olig2+ tumor cells are most similar to OPCs, yet, it identified differences in key progenitor genes - candidates for promotion of differentiation or quiescence. There are two datasets here. One characterizes the normal translational profiles of neurons, astrocytes, mature and immature oligodendrocytes. Each cell type was profiled in triplicate, from pools of at least two mice, and total RNA controls were collected in parallel. The second dataset includes translational profiles of Olig2 positive cells from tumors form several variations of a murine model of glioma. Each variation was collected at least in triplicate, and total RNA controls were analyzed in parallel. All translational profiles were generated using the Translating Ribosome Affinity Purification protocol.

2012-10-04 | E-GEOD-30626 | biostudies-arrayexpress

Comparing the m6A transcriptoms of Mettl14fl/fl and oligodendrocyre precursor cell (OPCs) and mature oligodendrocytes(OL) using m6A-SMART-seq

Project description:The goal of the experiment is to determine the m6A tagged transcripts after the Mettl14 gene inactivation in OPCs and mature oligodendrocytes using Z score > 0 . Methods: mRNA from total RNA of Mettl14fl/fl OPCs and mature oligodendrocytes was purified with Dynabeads Oligo (dT)25 (ThermoFisher; 61006). The equivalent amount of input and m6A-imunoprecipitated RNA were prepared for library generation using the SMART-seq protocol as described (Picelli et al., 2014). Three biological replicates of control OPCs and three biological replicates of control oligodendrocytes were sequenced using Illumina NextSeq 500. Adapters were trimmed from original reads using Trimmomatic and low-quality reads were removed. The remaining reads were then mapped to the mouse genome (mm10) using STAR aligner (Dobin et al., 2013). To measure the relative m6A level per gene, the ratio of m6A IP/ Input was first calculated. The Z scores were then obtained by comparing the ratios (m6A IP/ Input) to the mean of the group to reflect the relative m6A level per gene on a transcriptome-wide scale. Results: The m6A-seq analyses detected 3554 m6A marked transcripts in OPCs and 2606 m6A marked transcripts in oligodendrocytes.There are 2806 transcripts with the m6A mark in OPCs that were present but not marked in oligodendrocytes , and 1626 transcripts that possessed the m6A mark in oligodendrocytes but not in OPCs . Only 23 of the shared transcripts , showed the m6A mark in both OPCs and oligodendrocytes. Conclusions: The dynamic nature of the m6A mark in oligodendrocyte lineage cells suggests that it may play an important role in oligodendrocyte differentiation and CNS myelination.

2019-12-31 | GSE124202 | GEO

Comparing the transcriptoms of Mettl14fl/fl and Mettl14 fl/fl Olig2-Cre oligodendrocyre precursor cell (OPCs) and mature oligodendrocytes using Next Generation Sequencing

Project description:Comparing the transcriptoms of Mettl14fl/fl and Mettl14 fl/fl Olig2-Cre oligodendrocyre precursor cell (OPCs) and mature oligodendrocytes using Next Generation Sequencing

| PRJNA511396 | ENA

m6A mRNA methylation is essential for oligodendrocyte maturation and CNS myelination

Project description:Oligodendrocytes are responsible for myelin formation and axonal trophic support in the vertebrate CNS. While a number of factors have been discovered that regulate oligodendrocyte lineage progression, the exact molecular mechanisms involved in this process remain unclear. Emerging studies have shown that N6-methyladenosine (m6A), the most common internal RNA modification of mammalian mRNA, plays a critical role in various developmental processes. In this study, we demonstrate that oligodendrocyte lineage progression is accompanied by changes in m6A modification on numerous transcripts. In vivo conditional inactivation in oligodendrocyte lineage cells of an essential m6A writer component, METTL14, results in decreased oligodendrocyte numbers and CNS hypomyelination, although oligodendrocyte precursor cell (OPC) numbers are normal. In vitro Mettl14 ablation disrupts post-mitotic oligodendrocyte maturation. In addition, Mettl14 ablation has distinct effects on OPC and oligodendrocyte transcriptomes. Together, our findings indicate that dynamic RNA methylation plays a critical regulatory role in oligodendrocyte development and CNS myelination.

2020-01-01 | GSE136496 | GEO

Candidate pathways for promoting differentiation and quiescence of oligodendrocyte progenitor-like cells in glioblastoma

2012-10-04 | GSE30626 | GEO

Activation of the chromatin-remodeling factor Smarca4/Brg1 cooperates with Olig2 to establish oligodendrocyte identity and control CNS myelination [ChIP-seq]

Project description:We investigate the role of Brg1 and Olig2 during oligodendrocyte differentiation by combining gene conditional knockout and next generation sequencing technology. We generate genome-wide maps of RNA polymerase II (RPolII), Brg1 (Smarca4), Olig2 and histone modifications in primary rat oligodendrocyte precursor cells (iOLs), differentiating oligodendrocytes and mature oligodendrocytes.We found that Brg1 is intensely regulated by RPolII at the initiation of oligodedrocyte differentiation. The genomic distribution of Brg1 in differentiating oligodendrocytes is pre-directed by Olig2 in iOLs. The dynamic interaction of Brg1 and chromatin is correlate with the distinct stages of gene expression during maturation. Finally, we show that Brg1 and Olig2 localization predict critical genes controling CNS myeliantion. Our study represents the first detailed analysis of genomic landscape during the oligodendrocyte development and provides a framework for further understanding of molecular mechanisms underlying oligodendrocyte lineage progression. Genomic distribution of Brg1, Olig2, RPolII and three different histone modifications in three oligodendrocyte developemtal stages were examined using primary cells by ChIP-sequencing. Spinal cord mRNA profiles of 14-day old control and Brg1c/c;Olig1-Cre mice were generated by RNA-sequencing.

2013-01-20 | E-GEOD-42447 | biostudies-arrayexpress

Newfound roles of OLIG2 in the regulation of lncRNAs, epigenetic status and its own expression at transcriptional and post-transcriptional levels during oligodendrocyte lineage formation

Project description:We performed an integrated study of genome-wide OLIG2 binding and the epigenetic modification status of both coding and non-coding genes during three stages of oligodendrocyte differentiation in vivo: Neural Stem Cells (NSC), Oligodendrocyte Progenitor Cells (OPC), and Newly Formed Oligodendrocytes (NFO). We found that 613 lncRNAs have OLIG2-binding sites and are expressed in at least one cell type, which can potentially be activated or repressed by OLIG2. 48 of them have increased expression in oligodendrocyte lineage cells. Predicting lncRNA functions by using a “guilt-by-association” approach revealed that the functions of these 48 lncRNAs were enriched in ‘oligodendrocyte development and differentiation’. Additionally, bivalent genes are known to play essential roles during embryonic stem cell differentiation. We identified bivalent genes in NSC, OPC, and NFO, and found that some bivalent genes bound by OLIG2 are dynamically regulated during oligodendrocyte development. Importantly, we have identified AU-rich elements (AREs) in the 3’-UTRs of Olig2 mRNAs. We unveiled a previously unknown mechanism that, in addition to transcriptional regulation via DNA binding, OLIG2 could post-transcriptionally self-regulate expression through interaction with the 3’-UTR of its own mRNA.

2021-07-08 | GSE155890 | GEO

Activation of the chromatin-remodeling factor Smarca4/Brg1 cooperates with Olig2 to establish oligodendrocyte identity and control CNS myelination [ChIP-seq]

2013-01-20 | GSE42447 | GEO

Rapid differentiation of hiPSCs into functional oligodendrocytes using an OLIG2 synthetic modified messenger RNARapid differentiation of hiPSCs into functional oligodendrocytes using an OLIG2 synthetic modified messenger RNA

Project description:We show that a synthetic modified messenger RNA (smRNA)-based reprogramming method that leads to the generation of transgene-free OLs has been developed. An smRNA encoding a modified form of OLIG2, a key TF in OL development, in which the serine 147 phosphorylation site is replaced with alanine, OLIG2S147A, is designed to reprogram hiPSCs into OLs. We demonstrate that repeated administration of the smRNA encoding OLIG2 S147A lead to higher and more stable protein expression. Using the single-mutant OLIG2 smRNA morphogen, we establish a 6-day smRNA transfection protocol, and glial induction lead to rapid NG2+ OL progenitor cell (OPC) generation (> 70% purity) from hiPSC-derived neural progenitor cells (NPCs). The smRNA-induced NG2+ OPCs can mature into functional OLs in vitro and promote remyelination in vivo. Proteomic analysis of OLIG2-binding proteins indicates that OLIG2 is bound by the heat shock protein 70 (HSP70) complex. The HSP70 complex is bound more strongly to OLIG2 with the modified phosphorylation site than to wild-type OLIG2.

2023-03-10 | PXD036975 | Pride

Impact of Major Facilitator Superfamily Domain containing 2a (Mfsd2a) mediated lipid transport on oligodendrocyte lineage development at single cell level.

Project description:Mfsd2a is involved in transport of essential fatty acids such as docosahexaenoic acid (DHA) from the periphery across blood brain barrier (BBB) into the brain parenchyma. Loss of Mfsd2a in humans leads to microcephaly and hypomyelination. The significance of lipid species transported by Mfsd2a on oligodendrocyte lineage development is not known. Using OPC specific deletion of Mfsd2a (2aOKO) in mice we found that OPC cell state, differentiation and oligodendrocytes maturation is disrupted resulting in hypomyelination compared to 2afl/fl controls. Single cell RNAsequencing analysis was performed on total oligodendrocyte population from postnatal mouse brain using Ribo-TRAP mouse lines that labels complete oligodendrocyte lineage with GFP fluorescence to understand the influence of Mfsd2a on oligodendrocyte development.

2023-05-17 | GSE211879 | GEO

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data