Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR32775340_1.fastq.gz | Fastqsanger.gz | |||
| SRR32775340_2.fastq.gz | Fastqsanger.gz |
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Similar Datasets
Project description:We studied time course of pathological remodeling occurring in the hearts of cynomolgus monkey, Macaca fascicularis against atrioventricular block condition. We used microarrays to detail the pathological changes in the hearts which had obtained sensitivity for detecting dl-sotalol-induced TdP by 7th month after the production of atrioventricular block.
2023-01-05 | GSE199943 | GEO
Project description:Transcriptional profiling of the atrioventricular canal from e10.5 mouse hearts comparing wild-type control with Tbx3 GH/N hypomorphic mutant microdissected tissue. The goal was to identify direct and indirect targets of the transcription factor Tbx3, because Tbx3 is expressed in the AVC and hypomorphs develop embryonic AV conduction block at e12.5.
2011-04-01 | GSE24122 | GEO
Project description:Rationale: The atrioventricular conduction system controls ventricular activation and is delineated by expression of Tbx3. Genome-wide association studies identified genetic variants near TBX3 associated with conduction velocities (PR interval and QRS duration), suggesting minor changes in TBX3 dose affect conduction system function. Objective: To assess whether and how Tbx3 dose reduction affects the integrity of the atrioventricular conduction system. Methods and Results: Electrocardiograms revealed a PR interval shortening and prolonged QT interval and QRS duration in heterozygous Tbx3 mutants compared to wild-types. We observed that the atrioventricular bundle and proximal bundle branches of Tbx3+/- mice after birth became hypoplastic, whereas the size of the atrioventricular node was not affected. The transcriptomes of wild-type and Tbx3+/- atrioventricular nodes were analyzed using BAC-Tbx3-Egfp mice enabling specific isolation of the atrioventricular node by laser capture microdissection followed by RNA-sequencing. Hundreds of genes were slightly but consistently deregulated. Cross-referencing with transcriptome data of isolated cardiomyocytes of the conduction system and chamber myocardium derived from Tbx3+/Venus;BAC-Nppb-Katushka hearts revealed that a set of chamber-enriched genes, including Kcne1 (MinK), Ryr2, and Scn5a, were upregulated in Tbx3+/- atrioventricular nodes, whereas conduction system-enriched genes, including Hcn4 and Cacna2d2, were downregulated. We performed ATAC-sequencing on purified fetal Tbx3+ atrioventricular cardiomyocytes to identify potential atrioventricular-specific regulatory DNA elements on a genome-wide scale, and identified regulatory elements mediating the Tbx3-dependent regulation of Ryr2 and other target genes in the atrioventricular node. Conclusions: Tbx3 dose reduction results in deregulation of a large number of genes affecting the electrical properties of the atrioventricular node and causes failure to maintain the structural integrity of the atrioventricular bundle. These data provide a mechanism underlying differences in PR interval and QRS duration in individuals carrying associated variants in the TBX3 locus.
2019-10-18 | GSE121464 | GEO
Project description:Tissue-resident macrophages abound in the distal atrioventricular (AV) node of the heart, electrically couple to conducting cardiomyocytes via Connexin (Cx) 43-containing gap junctions and are implicated in normal and aberrant cardiac conduction. Moreover, conditional deletion of Cx43 in macrophages (tamoxifen-inducible Cx3cr1 Cx43-/- mice) delays AV conduction and acute depletion of macrophages in Cd11bDTR mice induces progressive AV block.
2017-04-20 | GSE86306 | GEO
Project description:Transcriptional profiling of the atrioventricular canal from e10.5 mouse hearts comparing wild-type control with Tbx3 GH/N hypomorphic mutant microdissected tissue. The goal was to identify direct and indirect targets of the transcription factor Tbx3, because Tbx3 is expressed in the AVC and hypomorphs develop embryonic AV conduction block at e12.5. Two-condition experiment, wild-type control and Tbx3 mutant AVC tissue. Tissue from 5 hearts was pooled to make each sample. Biological replicates: 4.
2011-04-01 | E-GEOD-24122 | biostudies-arrayexpress
Project description:The molecular mechanisms governing heart development provide an important framework to understand congenital heart disease. The embryonic vertebrate heart tube develops an atrioventricular canal that divides the atrial and ventricular chambers, forms atrioventricular conduction tissue and organizes valve development. To better understand the molecular mechanism underlying atrioventricular canal versus chamber myocardium expression, a double-reporter transgenic mouse line was generated in which the expression of EGFP (green fluorescent protein) and Katushka (red fluorescent protein) are selectively expressed in the atrioventricular canal and in the chamber myocardium, respectively. We assessed the genome-wide H3K27ac pattern in isolated embryonic AV canal and in chamber cardiomyocytes, respectively. EGFP and Katushka-positive cells were purified by FACS and fixed. ChIP was performed with the truemicro ChIP (Diagenode) according to the manufacturer’s protocol using the H3K27ac antibody (abcam ab4729). Chipped DNA were subjected to library preparation using the 5500 Series SOLiD™ Systems ample preparation kit (Applied Biosystems) according to manufactures recommendations and sequenced using the 5500 wildfire system (SOLiD).
2014-03-06 | E-GEOD-55611 | biostudies-arrayexpress
Project description:The molecular mechanisms governing heart development provide an important framework to understand congenital heart disease. The embryonic vertebrate heart tube develops an atrioventricular canal that divides the atrial and ventricular chambers, forms atrioventricular conduction tissue and organizes valve development. To better understand the molecular mechanism underlying atrioventricular canal versus chamber myocardium expression, a double-reporter transgenic mouse line was generated in which the expression of EGFP (green fluorescent protein) and Katushka (red fluorescent protein) are selectively expressed in the atrioventricular canal and in the chamber myocardium, respectively. We assessed the genome-wide H3K27ac pattern in isolated embryonic AV canal and in chamber cardiomyocytes, respectively.
2014-03-06 | GSE55611 | GEO
Project description:Goals of this study were to identify new candidates involved in the development of the Atrioventricular cushions in the mouse heart. Keywords = Heart development Keywords = Atrioventricular cushions Keywords = Atrioventricular junction Keywords = Atrioventricular myocardium Keywords = embryonic day ED10.5-11.0 Keywords = ventricles Keywords: development analysis
2007-09-12 | GSE4903 | GEO
Project description:Rationale: The atrioventricular conduction system controls ventricular activation and is delineated by expression of Tbx3. Genome-wide association studies identified genetic variants near TBX3 associated with conduction velocities (PR interval and QRS duration), suggesting minor changes in TBX3 dose affect conduction system function. Objective: To assess whether and how Tbx3 dose reduction affects the integrity of the atrioventricular conduction system. Methods and Results: Electrocardiograms revealed a PR interval shortening and prolonged QT interval and QRS duration in heterozygous Tbx3 mutants compared to wild-types. We observed that the atrioventricular bundle and proximal bundle branches of Tbx3+/- mice after birth became hypoplastic, whereas the size of the atrioventricular node was not affected. The transcriptomes of wild-type and Tbx3+/- atrioventricular nodes were analyzed using BAC-Tbx3-Egfp mice enabling specific isolation of the atrioventricular node by laser capture microdissection followed by RNA-sequencing. Hundreds of genes were slightly but consistently deregulated. Cross-referencing with transcriptome data of isolated cardiomyocytes of the conduction system and chamber myocardium derived from Tbx3+/Venus;BAC-Nppb-Katushka hearts revealed that a set of chamber-enriched genes, including Kcne1 (MinK), Ryr2, and Scn5a, were upregulated in Tbx3+/- atrioventricular nodes, whereas conduction system-enriched genes, including Hcn4 and Cacna2d2, were downregulated. We performed ATAC-sequencing on purified fetal Tbx3+ atrioventricular cardiomyocytes to identify potential atrioventricular-specific regulatory DNA elements on a genome-wide scale, and identified regulatory elements mediating the Tbx3-dependent regulation of Ryr2 and other target genes in the atrioventricular node. Conclusions: Tbx3 dose reduction results in deregulation of a large number of genes affecting the electrical properties of the atrioventricular node and causes failure to maintain the structural integrity of the atrioventricular bundle. These data provide a mechanism underlying differences in PR interval and QRS duration in individuals carrying associated variants in the TBX3 locus.
2019-10-18 | GSE121244 | GEO
Project description:We have generated scRNA-seq data from embryonic day (E)10.5 and E12.5 atrioventricular canals (primitive heart valves) to assess cellular diversity during the distinct epithelial-to-mesenchymal transitions (EMTs) from endocardium and epicardium that guide the formation of valve mesenchyme. Alongside, wildtype atrioventricular canals, we generated scRNA-seq data from Sox9 conditional knockouts (Sox9fl/fl;Tie2-cre) to explore the role of SOX9 in EMT. Atrioventricular canals were microdissected from cardiac chambers and outflow tract, enriching for heart valve progenitor lineages.
2023-06-30 | E-MTAB-11795 | biostudies-arrayexpress