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Cardiac transcriptome of Tcf21-depleted Xenopus embryos

ABSTRACT: The aim of the approach was to use RNAseq analysis to identify genes expressed in Xenopus epicardium that were affected by embryonic depletion of the epicardial transcription factor Tcf21 compared to control-MO injected siblings. Both upregulated and downregulated genes were validated by RT-PCR and whole embryo in situ hybridization to validate gene expression and assess spatio-temporal distribution of genes of interest within the heart and epicardium. Approximately 70-100 stage 44-46 Xenopus laevis hearts were dissected to isolate total mRNA from which poly-adenylated RNA was extracted using the Illumina standard protocol. This experiment represents one replicate from pooled hearts. mRNA profiles of stage 44-45 Xenopus laevis sibling hearts from control or Tcf21-depleted embryos, were generated by deep sequencing using Illumina GAII.

ORGANISM(S): Xenopus laevis

SUBMITTER: Panna Tandon

PROVIDER: E-GEOD-45786 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Tcf21 regulates the specification and maturation of proepicardial cells.

Tandon Panna P Miteva Yana V YV Kuchenbrod Lauren M LM Cristea Ileana M IM Conlon Frank L FL

Development (Cambridge, England) 20130501 11

The epicardium is a mesothelial cell layer essential for vertebrate heart development and pertinent for cardiac repair post-injury in the adult. The epicardium initially forms from a dynamic precursor structure, the proepicardial organ, from which cells migrate onto the heart surface. During the initial stage of epicardial development crucial epicardial-derived cell lineages are thought to be determined. Here, we define an essential requirement for transcription factor Tcf21 during early stages ...[more]

PMID: 23637334

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Cardiac transcriptome of Tcf21-depleted Xenopus embryos

Project description:The aim of the approach was to use RNAseq analysis to identify genes expressed in Xenopus epicardium that were affected by embryonic depletion of the epicardial transcription factor Tcf21 compared to control-MO injected siblings. Both upregulated and downregulated genes were validated by RT-PCR and whole embryo in situ hybridization to validate gene expression and assess spatio-temporal distribution of genes of interest within the heart and epicardium. Approximately 70-100 stage 44-46 Xenopus laevis hearts were dissected to isolate total mRNA from which poly-adenylated RNA was extracted using the Illumina standard protocol. This experiment represents one replicate from pooled hearts.

2013-07-05 | GSE45786 | GEO

Expression data from juvenile Xenopus laevis inner ear tissue

Project description:We implemented a functional genomics approach as a means to undertake a large-scale analysis of the Xenopus laevis inner ear transcriptome through microarray analysis. Microarray analysis uncovered genes within the X. laevis inner ear transcriptome associated with inner ear function and impairment in other organisms, thereby supporting the inclusion of Xenopus in cross-species genetic studies of the inner ear. Gene expression analysis of Xenopus laevis juvenile inner ear tissue. Inner ear RNA isolated from three groups of 5-10 juvenile X. laevis. Each biological replicate represents pooled inner ear RNA from 10-19 inner ears.

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Transcription profiling of mouse heart from E12.5 wildtype- and Sp3 animals

Project description:Mice lacking the zinc finger transcription factor Specificity protein 3 (Sp3) die prenatally in the C57Bl/6 background. To elucidate the cause of mortality we analyzed the potential role of Sp3 in embryonic heart development. Sp3 null hearts display defective looping at E10.5, and at E14.5 the Sp3 null mutants have developed a range of severe cardiac malformations. In an attempt to position Sp3 in the cardiac developmental hierarchy, we analysed the expression patterns of >15 marker genes in Sp3 null hearts. Expression of Cardiac ankyrin repeat protein (Carp) was downregulated prematurely after E12.5, while expression of the other marker genes was not affected. ChIP analysis revealed that Sp3 is bound to the Carp promoter region in vivo. Microarray analysis indicates that small molecule metabolism and cell-cell interactions are the most significantly affected biological processes in E12.5 Sp3 null myocardium. Since the epicardium showed distension from the myocardium, we studied expression of Wt1, a marker for epicardial cells. Wt1 expression was diminished in epicardium-derived cells in the myocardium of Sp3 null hearts. We conclude that Sp3 is required for normal cardiac development, and suggest that it has a crucial role in myocardial differentiation. ( Experiment Overall Design: Hearts were dissected from E12.5 wildtype (n=3) and Sp3 knockout (n=3) fetuses. Total RNA was isolated from individual hearts; 5Î¼g was used for labelling and hybridization to 430 2.0 Gene Chips (a total of 6).

2008-06-17 | E-GEOD-9124 | biostudies-arrayexpress

Identification of Tcf21 downstream genes in the epicardial cells and cardiomyocytes by transcriptomic analysis

Project description:Purpose: Studying the epicardium-myocardium crosstalk in the zebrafish larval heart. To do so, we aimed to identify, with RNA-seq, the genes dysregulated following the loss of the epicardial marker gene tcf21 in sorted epicardial cells and cardiomyocytes. Results: We first analyzed the transcriptome of epicardial and myocardial WT cells and identified cell-type specific/enriched genes. Then, we identified several differential expressed genes in tcf21 mutants, including several ligand-receptor couples known to mediate the epicardium-myocardium crosstalk.

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Comparison of the gene expression expression profile of activated and resting epicardium

Project description:Zebrafish can regenerate their hearts. As a first response to injury, the epicardium reacts by upregulalion of developmental marker genes. Here we compared in an unbiased manner the expression of the epicardium from uninjured zebrafish hearts and hearts at 3 days postcryoinjury. To label epicardial cells of uninjured hearts we usd pard3:GFP (POon et al 2010) and to label epicardium of the injured heart wt1b:eGFP (Perner et al 2007)

2019-07-30 | GSE118457 | GEO

Transcription profiling of Xenopus eye primordia vs. posterior neural plate vs. lateral endoderm normalized the whole embryos

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2009-09-15 | E-GEOD-9175 | biostudies-arrayexpress

Next generation sequencing identifies differentially localized transcripts in Xenopus laevis and Xenopus tropicalis oocytes

Project description:RNA-seq technology was used to identify differentially localized transcripts from Xenopus laevis and Xenopus tropicalis stage VI oocytes. Besides the discovery of a group of novel animally enriched RNAs, this study revealed a surprisingly low conservation of vegetal RNA localization between the two frog species. mRNA profiles of Xenopus laevis and Xenopus tropicalis animal and vegetal oocyte halves were generated by RNA-seq technology. For Xenopus laevis, animal and vegetal oocyte RNA preparations from two different females were generated in duplicates. For Xenopus tropicalis, animal and vegetal oocyte RNA preparations from two different females were analyzed.

2015-12-09 | E-GEOD-58420 | biostudies-arrayexpress

Xenopus laevis

Project description:Xenopus laevis

| PRJNA269132 | ENA

Transcription profiling of Xenopus embryos

Project description:Xenopus laevis embryos were injected with mRNA for EFTFs at 2-cell stage. Animal caps collected at stage 9, cultured to the equivalent of stage 15 and RNA extracted. Four biological replicates of the EFTF-injected and GFP-injected (control) caps were used to profile transcript expression patterns using Affymetrix Xenopus Laevis GeneChip microarrays. Experiment Overall Design: Xenopus laevis embryos were injected with mRNA for EFTFs at 2-cell stage. Animal caps collected at stage 9, cultured to the equivalent of stage 15 and RNA extracted. Four biological replicates of the EFTF-injected and GFP-injected (control) caps were used to profile transcript expression patterns using Affymetrix Xenopus Laevis GeneChip microarrays.

2009-09-15 | E-GEOD-9173 | biostudies-arrayexpress

BNC1 is a master regulator of human epicardial cell heterogeneity and function

Project description:Single cell RNAseq of a model of epicardium derived from human pluripotent stem cell (hPSC-epi) reveals that distinct epicardial sub-populations are defined by high levels of expression for the transcription factors BNC1 and TCF21. Cells positive for the transcription factor WT1 are included in the BNC1 population, which confirms the heterogeneity observed in the mouse with TCF21 and WT1. Analysis of genes differentially expressed between the two populations suggests differences in their biological activities. We identified THY1 as a membrane marker of the TCF21 population and we show that THY1+ cells can differentiate into cardiac fibroblast and smooth muscle cells while THY1- cells mostly produce the latter. Knocking-down BNC1 during the establishment of the populations led to an homogeneous epicardium containing mostly the TCF21high populations and differentiating mainly into cardiac fibroblasts. Using network inference methods and transcriptomic data from the different epicardial lineages derived from the hPSC-epi, we identified a core transcriptional network organized around WT1, TCF21 and BNC1 and orchestrated by BNC1.

2019-12-03 | GSE122827 | GEO

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