Ontology highlight
ABSTRACT:
PROVIDER: PRJNA421054 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR6346745_1.fastq.gz | Fastqsanger.gz | |||
| SRR6346745_2.fastq.gz | Fastqsanger.gz | |||
| SRR6346746_1.fastq.gz | Fastqsanger.gz | |||
| SRR6346746_2.fastq.gz | Fastqsanger.gz |
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Project description:RNA sequence of ISL1-MSCs and Ctrl-MSCs
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Project description:We report the high-throughput profiling of ISL1-binding sites in mammalian cells. By obtaining over four billion bases of sequence from chromatin immunoprecipitated DNA, we generated genome-wide ISL1-binding maps of Huh7 cells. This study provides a prediction of regulated genes by the ISL1.
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Project description:We report the high-throughput profiling of ISL1-binding sites in mammalian cells. By obtaining over four billion bases of sequence from chromatin immunoprecipitated DNA, we generated genome-wide ISL1-binding maps of SGC7901 cells. This study provides a prediction of regulated genes by the ISL1.
2019-03-06 | GSE122056 | GEO
Project description:Transcriptional programming of cell identity promises to open up new frontiers in regenerative medicine by enabling the efficient production of clinically relevant cell types. We examine if such cellular programming is accomplished by transcription factors that each have an independent and additive effect on cellular identity, or if programming factors synergize to produce an effect that is not independently obtainable. The combinations of Ngn2-Isl1-Lhx3 and Ngn2-Isl1-Phox2a transcription factors program embryonic stem cells to express a spinal or cranial motor neuron identity respectively. The two alternate expression programs are determined by recruitment of Isl1/Lhx3 and Isl1/Phox2a pairs to distinct genomic locations characterized by two alternative dimeric homeobox motifs. These results suggest that the function of programming modules relies on synergistic interactions among transcription factors and thus cannot be extrapolated from the study of individual transcription factors in a different cellular context. In this study, we functionally characterize induced motor neurons that have been directly generated from ES cells via the forced expression of two different combinations of three transcription factors. Spinal motor neurons are induced via the expression of Ngn2, Isl1, and Lhx3 (iNIL), while cortical motor neurons are induced via the expression of Ngn2, Isl1, and Phox2a (iNIP). Here we profile the gene expression patterns of both types of induced motor neurons, directed differentiation motor neurons, and control cells. In all, 20 microarray experiments are provided in this submission, including 3 replicates of a control condition, 3 replicates of cells that have 24hrs induction of iNIL, 2 replicates of induced spinal motor neurons (induction of iNIL for 48hrs) that have been Hb9-GFP sorted, 3 replicates of induced spinal motor neurons exposed to retinoic acid that have been Hb9-GFP sorted, 3 replicates of motor neurons that have been differentiated in vitro using RA and Hh signalling, 3 replicates of induced cortical motor neurons (induction of iNIP for 48hrs), and 3 replicates of cells in which Isl1 in induced alone (induction of iI for 48hrs). For ChIP-Seq Samples: In this study, we functionally characterize induced motor neurons that have been directly generated from ES cells via the forced expression of two different combinations of three transcription factors. Spinal motor neurons are induced via the expression of Ngn2, Isl1, and Lhx3 (iNIL), while cortical motor neurons are induced via the expression of Ngn2, Isl1, and Phox2a (iNIP). The genome-wide binding of some of the programming factors is characterized here using ChIP-seq. We characterize the binding of Lhx3 and Isl1/2 in iNIL cells, Phox2a and Isl1/2 in iNIP cells, and Isl1/2 in cells in which Isl1 is induced alone (iI). There are 7 Illumina sequence datasets in this submission; one replicate for each of iLhx3-V5 and Isl1/2 in iNIL cells, two replicates for each of iPhox2a-V5 and Isl1/2 in iNIP cells, and one replicate for Isl1/2 in iI cells. An appropriate pseudo-IP control experiment is included.
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Project description:To identify regulatory targets of the transcription factor Isl1 in the developing mouse genitalia, we performed ChIP-Seq using an anti-ISL1 rabbit monoclonal antibody on pooled chromatin isolated from multiple E14.5 mouse embryonic genital tubercles (GT). Our analysis identified more than 7,054 genomic regions enriched in both of two replicates. The majority of these binding sites are located more than 5 kb from the closest annotated transcriptional start site (TSS), with nearly one third of the binding sites more than 50kb away from the nearest TSS. A de novo motif search using HOMER demonstrated that GT Isl1 ChIP-seq peaks are enriched for a motif that matches the consensus sequence bound by Isl1 in other tissues. When compared to active enhancers in the GT identified using H3K27ac ChIP-Seq, we found that Isl1 binding sites are strongly enriched in the GT compared to other embryonic tissues. Further analysis of the location of Isl1 peaks revealed a strong association with genes implicated in limb and urogenital development. We conclude that there is a strong association between Isl1 regulatory activity and genes involved in genital development.
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Project description:Understanding factors that drive development and function of the sinoatrial node (SAN) is crucial to development of potential therapies for sinus arrhythmias, including potential generation of biological pacemakers. Here, we identify a key cell autonomous role for the LIM homeodomain transcription factor ISL1 for survival, proliferation and function of pacemaker cells throughout development. Chromatin immunoprecipitation assays performed utilizing antibody to ISL1 in chromatin extracts from FACS purified SAN cells demonstrated that ISL1 directly binds genomic regions within several genes critical for normal pacemaker function, including subunits of the L-type calcium channel, Ank2, and Tbx3. Other genes implicated in abnormal heart rhythm in humans were also direct downstream targets of ISL1 in SAN cells. Our studies represent the first in vivo ChIP-seq studies for SAN cells which provide a basis for further exploration of factors critical to SAN formation and function and highlight the potential for utilization of ISL1 in combination with other SAN transcription factors for generating pacemaker cells for therapy or drug screening purposes. ISL1 ChIP-seq profiling was performed in Hcn4-H2BGFP SAN cells purified from neonatal hearts.
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Project description:Understanding factors that drive development and function of the sinoatrial node (SAN) is crucial to development of potential therapies for sinus arrhythmias, including potential generation of biological pacemakers. Here, we identify a key cell autonomous role for the LIM homeodomain transcription factor ISL1 for survival, proliferation and function of pacemaker cells throughout development. Analysis of several Isl1 mutant mouse lines, including one in which Isl1 was specifically ablated in SAN (Hcn4- CreERT2;Isl1) revealed an early requirement for Isl1 within SAN for embryonic viability. RNA-seq analyses on FACS purified SAN cells revealed dysregulation of a number of genes critical for SAN function to be downstream of ISL1 in Hcn4-CreERT2;Isl1 mutants, including transcription factors and ion channels. Our studies demonstrated that ISL1 regulated approximately one third of genes that were significantly expressed in SAN, and highlight the potential for utilization of ISL1 in combination with other SAN transcription factors for generating pacemaker cells for therapy or drug screening purposes. Results also suggest Isl1 as a candidate gene for sick sinus syndrome. RNA-seq analyses were performed on samples from Hcn4-CreERT2;Isl1 mutant and control SANs
2015-07-24 | E-GEOD-69097 | biostudies-arrayexpress
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