Gene expression alterations in SoxC knockdown sea urchin embryos
Ontology highlight
ABSTRACT:
ORGANISM(S): Strongylocentrotus purpuratus
PROVIDER: GSE76067 | GEO | 2015/12/16
SECONDARY ACCESSION(S): PRJNA306145
REPOSITORIES: GEO
Similar Datasets
Project description:Transcription factor SoxC is required for all neural development in purple sea urchin S. purpuratus embryos. To begin to develop a gene regulatory network for neural development, we used RNA-Seq to compare transcript populations in SoxC knockdown and control embryos. SoxC function was knocked down by morpholino oligo injection. RNA from about 1000 embryos were collected for both control and knockdown samples.
2015-12-16 | E-GEOD-76067 | biostudies-arrayexpress
Project description:microRNAs (miRNAs) are small noncoding RNAs that mediate post-transcriptional gene regulation and have emerged as essential regulators of many developmental events. The transcriptional network during early embryogenesis of the purple sea urchin, Strongylocentrotus purpuratus, is well described and would serve as an excellent model to test functional contributions of miRNAs in embryogenesis. We examined the loss of function phenotypes of the major components of the miRNA biogenesis pathway. Inhibition of de novo synthesis of Drosha and Dicer in the embryo led to consistent developmental defects, a failure to gastrulate, and embryonic lethality, including changes in the steady state levels of transcription factors and signaling molecules involved in germ layer specification. We annotated and profiled small RNA expression from the ovary and several early embryonic stages by deep sequencing followed by computational analysis. All miRNAs have dynamic accumulation profiles through early development as do a large population of putative piRNAs (piwi-interacting RNAs). Defects in morphogenesis caused by loss of Drosha can be rescued with four miRNAs which permits a strong miRNA functional assay. Taken together our results indicate that post-transcriptional gene regulation directed by miRNAs is functionally important for early embryogenesis and is an integral part of the early embryonic gene regulatory network in S. purpuratus. Small RNA expression profiling in early sea urchin development
2012-02-17 | E-GEOD-35876 | biostudies-arrayexpress
Project description:To investigate the events throughout embryogenesis, we performed a series of proteomic analyses using purple sea urchin embryos as a model.
2023-06-14 | PXD034496 | JPOST Repository
Project description:During organogenesis, neural and mesenchymal progenitor cells give rise to many cell lineages, but their molecular requirements for self-renewal and lineage decisions are incompletely understood. Here we show that their survival critically relies on the redundantly acting SoxC transcription factors Sox4, Sox11 and Sox12. The more SoxC alleles are deleted in mouse embryos, the more severe and widespread organ hypoplasia is. SoxC triple-null embryos die at mid-gestation unturned and tiny, with normal patterning and lineage specification, but with massively dying neural and mesenchymal progenitor cells. Specific inactivation of SoxC genes in neural and mesenchymal cells leads to selective apoptosis of these cells, suggesting SoxC cell-autonomous roles. Tead2 functionally interacts with the SoxC genes in embryonic development, and is a direct target of the SoxC proteins. The SoxC genes therefore ensure neural and mesenchymal progenitor cell survival and act in part by activating this transcriptional mediator of the Hippo signaling pathway. During organogenesis, neural and mesenchymal progenitor cells give rise to many cell lineages, but their molecular requirements for self-renewal and lineage decisions are incompletely understood. Here we show that their survival critically relies on the redundantly acting SoxC transcription factors Sox4, Sox11 and Sox12. The more SoxC alleles are deleted in mouse embryos, the more severe and widespread organ hypoplasia is. SoxC triple-null embryos die at mid-gestation unturned and tiny, with normal patterning and lineage specification, but with massively dying neural and mesenchymal progenitor cells. Specific inactivation of SoxC genes in neural and mesenchymal cells leads to selective apoptosis of these cells, suggesting SoxC cell-autonomous roles. Tead2 functionally interacts with the SoxC genes in embryonic development, and is a direct target of the SoxC proteins. The SoxC genes therefore ensure neural and mesenchymal progenitor cell survival and act in part by activating this transcriptional mediator of the Hippo signaling pathway.
2010-04-15 | GSE20740 | GEO
Project description:microRNAs (miRNAs) are small noncoding RNAs that mediate post-transcriptional gene regulation and have emerged as essential regulators of many developmental events. The transcriptional network during early embryogenesis of the purple sea urchin, Strongylocentrotus purpuratus, is well described and would serve as an excellent model to test functional contributions of miRNAs in embryogenesis. We examined the loss of function phenotypes of the major components of the miRNA biogenesis pathway. Inhibition of de novo synthesis of Drosha and Dicer in the embryo led to consistent developmental defects, a failure to gastrulate, and embryonic lethality, including changes in the steady state levels of transcription factors and signaling molecules involved in germ layer specification. We annotated and profiled small RNA expression from the ovary and several early embryonic stages by deep sequencing followed by computational analysis. All miRNAs have dynamic accumulation profiles through early development as do a large population of putative piRNAs (piwi-interacting RNAs). Defects in morphogenesis caused by loss of Drosha can be rescued with four miRNAs which permits a strong miRNA functional assay. Taken together our results indicate that post-transcriptional gene regulation directed by miRNAs is functionally important for early embryogenesis and is an integral part of the early embryonic gene regulatory network in S. purpuratus.
2012-02-17 | GSE35876 | GEO
Project description:During organogenesis, neural and mesenchymal progenitor cells give rise to many cell lineages, but their molecular requirements for self-renewal and lineage decisions are incompletely understood. Here we show that their survival critically relies on the redundantly acting SoxC transcription factors Sox4, Sox11 and Sox12. The more SoxC alleles are deleted in mouse embryos, the more severe and widespread organ hypoplasia is. SoxC triple-null embryos die at mid-gestation unturned and tiny, with normal patterning and lineage specification, but with massively dying neural and mesenchymal progenitor cells. Specific inactivation of SoxC genes in neural and mesenchymal cells leads to selective apoptosis of these cells, suggesting SoxC cell-autonomous roles. Tead2 functionally interacts with the SoxC genes in embryonic development, and is a direct target of the SoxC proteins. The SoxC genes therefore ensure neural and mesenchymal progenitor cell survival and act in part by activating this transcriptional mediator of the Hippo signaling pathway. During organogenesis, neural and mesenchymal progenitor cells give rise to many cell lineages, but their molecular requirements for self-renewal and lineage decisions are incompletely understood. Here we show that their survival critically relies on the redundantly acting SoxC transcription factors Sox4, Sox11 and Sox12. The more SoxC alleles are deleted in mouse embryos, the more severe and widespread organ hypoplasia is. SoxC triple-null embryos die at mid-gestation unturned and tiny, with normal patterning and lineage specification, but with massively dying neural and mesenchymal progenitor cells. Specific inactivation of SoxC genes in neural and mesenchymal cells leads to selective apoptosis of these cells, suggesting SoxC cell-autonomous roles. Tead2 functionally interacts with the SoxC genes in embryonic development, and is a direct target of the SoxC proteins. The SoxC genes therefore ensure neural and mesenchymal progenitor cell survival and act in part by activating this transcriptional mediator of the Hippo signaling pathway. Total RNA isolated from limb bud cells in culture treated with Cre recombinase expressing adenovirus to inactivate floxed SoxC genes was compared to total RNA isolated from cells treated with LacZ expressing adenovirus as well as untreated cells as controls.
2010-04-28 | E-GEOD-20740 | biostudies-arrayexpress
Project description:The sea urchin S. purpuratus is a model organism for study of the genomic control circuitry underlying embryonic development. We examined the complete repertoire of genes expressed in the S. purpuratus embryo, up to late gastrula stage, by means of high-resolution custom tiling arrays covering the whole genome. We detected complete spliced structures even for genes known to be expressed at low leveles in only a few cells. At least 11,000 to 12,000 genes are used in embryogenesis. These include most of the genes encoding transcription factors and signaling proteins, as well as some classes of general cytoskeletal and metabolic proteins, but only a minor fraction of genes encoding immune functions and sensory receptors. Thousands of small asymmetric transcripts of unknown function were also detected in intergenic regions throughout the genome. The tiling array data were used to correct and authenticate several thousand gene models during the genome annotation process. Keywords: high-resolution tiling array, sea urchin, embryo Keywords: other
2006-10-23 | GSE6031 | GEO
Project description:Stress responses play an important role in shaping species distributions and robustness to climate change. We investigated how stress responses alter the contribution of additive genetic variation to gene expression during development of the purple sea urchin, Strongylocentrotus purpuratus, under increased temperatures that model realistic climate change scenarios. We first measured gene expression responses in the embryos by RNA-seq to characterize molecular signatures of mild, chronic temperature stress in an unbiased manner. We found that an increase from 12 °C to 18 °C caused widespread alterations in gene expression including in genes involved in protein folding, RNA processing, and development. To understand the quantitative genetic architecture of this response, we then focused on a well-characterized gene network involved in endomesoderm and ectoderm specification. Using a breeding design with wild-caught individuals, we measured genetic and gene-environment interaction effects on 72 genes within this network. We found genetic or maternal effects in 33 of these genes, and that the genetic effects were correlated in the network. 14 network genes also responded to higher temperatures, but we found no significant genotype-environment interactions in any of the genes. This absence may be due to an effective buffering of the temperature perturbations within the network. In support of this hypothesis, perturbations to regulatory genes did not affect the expression of the genes that they regulate. Together, these results provide novel insights into the relationship between environmental change and developmental evolution and suggest that climate change may not expose large amounts of cryptic genetic variation to selection in this species. 7 RNAseq samples representing embryos grown at 2 temperatures, from 3 female parents and 2 male parents
2012-11-30 | E-GEOD-38606 | biostudies-arrayexpress
Project description:we generated new reference genome assemblies for two species belonging to two different echinoderm classes: the bat sea star Patiria miniata and the purple sea urchin Strongylocentrotus purpuratus
2024-11-30 | GSE281901 | GEO
Project description:Base-resolution DNA methylation maps of purple sea urchin (Strongylocentrotus purpuratus)
| PRJNA778394 | ENA