45 results found
    1. Developmental Biology
    2. Evolutionary Biology

    Hedgehog signaling is required for endomesodermal patterning and germ cell development in the sea anemone Nematostella vectensis

    Cheng-Yi Chen et al.
    The dependence of Nematostella germ cell specification on zygotic Hedgehog pathway activity supports the hypothesis that the eumetazoan common ancestor segregated its germline by inductive signals rather than maternal determinants.
    1. Developmental Biology

    Sox17 and β-catenin co-occupy Wnt-responsive enhancers to govern the endoderm gene regulatory network

    Shreyasi Mukherjee et al.
    Genomic analysis of Xenopus gastrula reveal that the transcription factor Sox17 interacts with the Wnt signaling effector ß-catenin on enhancers to regulate the transcriptional program underlying endoderm germ layer formation.
    1. Developmental Biology

    Nodal and planar cell polarity signaling cooperate to regulate zebrafish convergence and extension gastrulation movements

    Margot LK Williams, Lilianna Solnica-Krezel
    Nodal signaling regulates gastrulation cell behaviors largely in parallel with planar cell polarity signaling and is sufficient for ex vivo extension of embryonic explants.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Zebrafish embryonic explants undergo genetically encoded self-assembly

    Alexandra Schauer et al.
    Blastoderm tissue organization and patterning in zebrafish explants is driven by a genetically encoded and controlled self-assembly mechanism, rather than a bonafide self-organization mechanism.
    1. Chromosomes and Gene Expression
    2. Developmental Biology

    Zygotic pioneer factor activity of Odd-paired/Zic is necessary for late function of the Drosophila segmentation network

    Isabella V Soluri et al.
    Mechanisms for shaping the chromatin accessibility landscape operate during development to regulate how embryonic patterning information is interpreted at the level of gene regulatory networks.
    1. Cell Biology
    2. Developmental Biology

    The tumor suppressor PTPRK promotes ZNRF3 internalization and is required for Wnt inhibition in the Spemann organizer

    Ling-Shih Chang et al.
    Two cancer related proteins, tyrosine phosphatase PTPRK and ubiquitin ligase ZNRF3, interact to downregulate Wnt receptors, thereby regulating Spemann organizer function during Xenopus development.
    1. Developmental Biology
    2. Genetics and Genomics

    Combinatorial chromatin dynamics foster accurate cardiopharyngeal fate choices

    Claudia Racioppi et al.
    ATAC-seq, CRISPR/Cas9 mutagenesis, reporter and gene expression assays revealed dynamic chromatin accessibility profiles governing differential gene expression during heart vs. pharyngeal muscle fate choices in the powerful chordate model Ciona.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Dynamic regulation of chromatin accessibility by pluripotency transcription factors across the cell cycle

    Elias T Friman et al.
    OCT4 and SOX2 display partially independent activity to regulate chromatin accessibility, and highly dynamic activity of OCT4 is required throughout the cell cycle to maintain pluripotency enhancer accessibility.
    1. Developmental Biology
    2. Evolutionary Biology

    Maternally regulated gastrulation as a source of variation contributing to cavefish forebrain evolution

    Jorge Torres-Paz et al.
    Phenotypic evolution can originate from variations in very precocious developmental events, starting even before fecundation, during the fabrication of the egg in the mother's gonad.
    1. Developmental Biology
    2. Genetics and Genomics

    Extensive intraspecies cryptic variation in an ancient embryonic gene regulatory network

    Yamila N Torres Cleuren et al.
    Quantitative genetic analyses reveal remarkably broad genetic variation underlies the requirement for two critical regulatory inputs into a core embryonic gene regulatory network within one animal species.

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