Regulatory divergence during limb evolution
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ABSTRACT:
PROVIDER: PRJNA521485 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Regulatory divergence during pig limb evolution
| PRJNA521488 | ENA
Project description:Regulatory divergence during mouse limb evolution
| PRJNA521487 | ENA
Project description:Genome-wide comparative analyses of the open chromatin profiles between equivalent stages of mouse and pig limb bud development reveal the extensive functional divergence of their limb regulomes. These alterations affect evolutionary conserved regions located in the genomic landscapes of genes with essential functions during limb development. This analysis uncovers the widespread regulatory changes that appear to underlie the morphological diversion of the artiodactyl limb from the pentadactyl blueprint of tetrapods.
2020-03-31 | GSE126292 | GEO
Project description:Genome-wide comparative analyses of the open chromatin profiles between equivalent stages of mouse and pig limb bud development reveal the extensive functional divergence of their limb regulomes. These alterations affect evolutionary conserved regions located in the genomic landscapes of genes with essential functions during limb development. This analysis uncovers the widespread regulatory changes that appear to underlie the morphological diversion of the artiodactyl limb from the pentadactyl blueprint of tetrapods.
2020-03-31 | GSE126291 | GEO
Project description:The evolution of human anatomical features likely involved changes in gene regulation during development. However, the nature and extent of human specific developmental regulatory functions remain unknown. We obtained a genome-wide view of cis regulatory evolution in human embryonic tissues by comparing the histone modification H3K27ac, which provides a quantitative readout of promoter and enhancer activity, during human, rhesus, and mouse limb development. Based on increased H3K27ac, we find that 13% of promoters and 11% of enhancers have gained activity on the human lineage since the human-rhesus divergence. These gains largely arose by modification of ancestral regulatory activities in the limb or potential co-option from other tissues and are likely to have heterogeneous genetic causes. Most enhancers that exhibit gain of activity in humans originated in mammals. Gains at promoters and enhancers in the human limb are associated with increased gene expression, suggesting they include molecular drivers of human morphological evolution. ChIP-Seq and RNA-Seq of autopod tissue of developing limb buds of Human (E33-E47), rhesus (E31-E36), and mouse (E10.5-E13.5). No raw data are provided for human samples. Human alignments were anonymized by removing sequence information and converting to bed format.
2013-07-02 | E-GEOD-42413 | biostudies-arrayexpress
Project description:The evolution of human anatomical features likely involved changes in gene regulation during development. However, the nature and extent of human specific developmental regulatory functions remain unknown. We obtained a genome-wide view of cis regulatory evolution in human embryonic tissues by comparing the histone modification H3K27ac, which provides a quantitative readout of promoter and enhancer activity, during human, rhesus, and mouse limb development. Based on increased H3K27ac, we find that 13% of promoters and 11% of enhancers have gained activity on the human lineage since the human-rhesus divergence. These gains largely arose by modification of ancestral regulatory activities in the limb or potential co-option from other tissues and are likely to have heterogeneous genetic causes. Most enhancers that exhibit gain of activity in humans originated in mammals. Gains at promoters and enhancers in the human limb are associated with increased gene expression, suggesting they include molecular drivers of human morphological evolution.
2013-07-02 | GSE42413 | GEO
Project description:The evolution of tetrapod limbs from fish fins enabled the conquest of land by vertebrates and thus represents a key step in evolution. Despite the use of comparative gene expression analyses, critical aspects of this transformation remain controversial, in particularly the origin of digits. Hoxa and Hoxd genes are essential for the specification of the different limb segments and their functional abrogation leads to large truncations of the appendages. Here we show that the selective transcription of mouse Hoxa genes in proximal and distal limbs is related to a bimodal higher order chromatin structure, similar to that reported for Hoxd genes, thus revealing a generic regulatory strategy implemented by both gene clusters during limb development. We found the same bimodal chromatin architecture in fish embryos, indicating that the regulatory strategy used to pattern tetrapod limbs predates the divergence between fish and tetrapods. However, when assessed in mice, both fish regulatory domains triggered transcription in proximal, rather than distal limb territories, supporting an evolutionary scenario whereby digits arose as true tetrapod novelties through genetic retrofitting of a preexisting bimodal chromatin framework. We discuss the possibility to consider regulatory circuitries, rather than expression patterns, as essential parameters to define evolutionary synapomorphies. Circular Chromosome Conformation Capture (4C seq) at the mouse HoxA and HoxD loci in proximal and distal forelimbs and forebrain at E12.5 and at the zebrafish HoxAa, HoxAb and HoxDa loci in 5 dpf whole embryos.
2014-01-21 | E-GEOD-47644 | biostudies-arrayexpress
Project description:This SuperSeries is composed of the SubSeries listed below.
2020-03-31 | GSE126293 | GEO
Project description:The evolution of tetrapod limbs from fish fins enabled the conquest of land by vertebrates and thus represents a key step in evolution. Despite the use of comparative gene expression analyses, critical aspects of this transformation remain controversial, in particularly the origin of digits. Hoxa and Hoxd genes are essential for the specification of the different limb segments and their functional abrogation leads to large truncations of the appendages. Here we show that the selective transcription of mouse Hoxa genes in proximal and distal limbs is related to a bimodal higher order chromatin structure, similar to that reported for Hoxd genes, thus revealing a generic regulatory strategy implemented by both gene clusters during limb development. We found the same bimodal chromatin architecture in fish embryos, indicating that the regulatory strategy used to pattern tetrapod limbs predates the divergence between fish and tetrapods. However, when assessed in mice, both fish regulatory domains triggered transcription in proximal, rather than distal limb territories, supporting an evolutionary scenario whereby digits arose as true tetrapod novelties through genetic retrofitting of a preexisting bimodal chromatin framework. We discuss the possibility to consider regulatory circuitries, rather than expression patterns, as essential parameters to define evolutionary synapomorphies.
2014-01-21 | GSE47644 | GEO
Project description:Gene regulation can evolve either by cis-acting local changes to regulatory element DNA sequences or by global changes to the trans-acting regulatory environment; however, the modes favored during recent human evolution are unknown. To date, studies investigating gene regulatory divergence between closely-related species have produced limited estimates on the relative contributions of cis and trans effects on DNA regulatory element activities at a global-scale. By leveraging a comparative ATAC-STARR-seq framework, we identified 10,779 regulatory regions with divergent activity in cis and 10,608 regulatory regions with divergent activity in trans between human and rhesus macaque lymphoblastoid cell lines (LCLs). This revealed substantially more trans effects than predicted and indicates trans-regulatory mechanisms play a larger role in human evolution than previously expected. We also discover that most species-specific regulatory elements (67%) diverge in both cis and trans, suggesting these two mechanisms jointly drive divergent regulatory activity in a single sequence.
2023-12-22 | GSE216917 | GEO