Similar Datasets
Project description:Capture-C from in situ HiC libraries in tailbud tissue containing pre-somitic mesoderm (PSM) dissected from Smchd1GFP/GFP, Smchd1MD43-GFP/MD43-GFP, Smchd1+/+ and Smchd1MD43/MD43 embryos E8.5 embryos at the 7-9 somite stage of development. Somite stage is a good indicator of the precise stage of embryonic development.
2023-04-04 | GSE228673 | GEO
Project description:RNAseq from 8 somite stage PSM
| PRJNA728097 | ENA
Project description:RNAseq from somite-matched tailbud tissue from E8-8.5 embryo tailbuds at the 6-11 somite developmental stages
2022-06-27 | GSE183733 | GEO
Project description:RNAseq from somite-matched frontonasal prominence (FNP) from E10.5 embryos at the 29-somite developmental stage
2021-05-08 | GSE174090 | GEO
Project description:Within a given vertebrate species, the total number of vertebrae in each anatomical domain is precisely defined and shows little variation among individuals. In contrast, this number can vary tremendously between different species, ranging from as few as six vertebrae in frogs to as many as several hundred in some snakes and fish. Segmental precursors of the vertebrae, called somites are produced sequentially in the embryo from the presomitic mesoderm (PSM), until a final number characteristic of the species, is reached. Here, we show in the chicken embryo that, by controlling the rate of axis elongation, Hox genes control the total number of somites generated by the embryo. We observed that activation of the most posterior Hox genes in somite precursors of the tail bud correlates with an abrupt slowing-down of the speed of axis elongation. We show that progressively more posterior Hox genes, which are collinearly activated in somitic precursors of the epiblast, repress Wnt activity with increasing strength. This leads to a graded repression of the Brachyury/T transcription factor, reducing mesoderm ingression and slowing down the elongation process. Due to the continuation of somite formation, the PSM, which is not fed with sufficient supply of new cells posteriorly, becomes progressively exhausted, ultimately leading to an arrest of segment formation. Our data provide a conceptual framework to explain how the cross-talk between the segmentation clock and the Hox clock accounts for the diversity of vertebral formulae across animal species.
2012-05-23 | GSE38107 | GEO
Project description:Within a given vertebrate species, the total number of vertebrae in each anatomical domain is precisely defined and shows little variation among individuals. In contrast, this number can vary tremendously between different species, ranging from as few as six vertebrae in frogs to as many as several hundred in some snakes and fish. Segmental precursors of the vertebrae, called somites are produced sequentially in the embryo from the presomitic mesoderm (PSM), until a final number characteristic of the species, is reached. Here, we show in the chicken embryo that, by controlling the rate of axis elongation, Hox genes control the total number of somites generated by the embryo. We observed that activation of the most posterior Hox genes in somite precursors of the tail bud correlates with an abrupt slowing-down of the speed of axis elongation. We show that progressively more posterior Hox genes, which are collinearly activated in somitic precursors of the epiblast, repress Wnt activity with increasing strength. This leads to a graded repression of the Brachyury/T transcription factor, reducing mesoderm ingression and slowing down the elongation process. Due to the continuation of somite formation, the PSM, which is not fed with sufficient supply of new cells posteriorly, becomes progressively exhausted, ultimately leading to an arrest of segment formation. Our data provide a conceptual framework to explain how the cross-talk between the segmentation clock and the Hox clock accounts for the diversity of vertebral formulae across animal species. Primitive streak aera corresponding to PSM precursors were dissected in Stage 9 somites chicken embryo overexpressing HoxA13 or a control H2B-Venus. The experiment was designed to have biological duplicate in each conditions. The gain-of-function was obtained by electroporating the embryo at Stage 5HH with a vector containing HoxA13 under the CAGGS promoter with an H2B venus reporter. In order to have enough material for the microarray, 7 embryos were pooled in each sample before the hybridization.
2012-05-22 | E-GEOD-38107 | biostudies-arrayexpress
Project description:RNAseq from 29 somite stage FNP
| PRJNA728127 | ENA
Project description:Zebrafish periderm at 4-somite stage
| PRJNA589023 | ENA
Project description:In order to compare the transcriptome and tissue-specific nucleosome free regions of zebrafish periderm cells at 4-somite stage, we isolated the RNA from sorted GFP-positive cells of Tg(krt4:GFP) embryos and perform low-input RNA-seq. This study revealed periderm-specific transcriptome at 4-somite stage. Moreover, comparing with ATAC-seq from the same tissue, we confirmed the correlation between gene expression and nearby chromatin accessibility.
2020-01-13 | GSE139808 | GEO
Project description:In order to profile periderm-specific nucleosome free regions of zebrafish periderm cells at 4-somite stage, we isolated the equal number of GFP-positive cells and GFP-negative cells from Tg(krt4:GFP) embryos and perform ATAC-seq. This study revealed the landscape of zebrafish periderm-specific nucleosome free regions at 4-somite stage.
2020-01-13 | GSE140240 | GEO