4,453 results found
    1. Developmental Biology

    Pitx2c orchestrates embryonic axis extension via mesendodermal cell migration

    Michelle M Collins et al.
    Expression of Pitx2c at the onset of gastrulation drives convergence and extension movements in the zebrafish embryo by promoting downstream pathways affecting chemokine signaling, integrin-ECM interactions, and planar cell polarity components.
    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

    A novel mechanism of gland formation in zebrafish involving transdifferentiation of renal epithelial cells and live cell extrusion

    Richard W Naylor et al.
    A rare example of direct transdifferentiation is discovered in zebrafish in which kidney epithelial cells change into an endocrine gland and undergo live-cell extrusion from the renal tubule.
    1. Computational and Systems Biology
    2. Developmental Biology

    Unipolar distributions of junctional Myosin II identify cell stripe boundaries that drive cell intercalation throughout Drosophila axis extension

    Robert J Tetley et al.
    Analysing Myosin II unipolar planar polarisation with high spatial and temporal resolution during Drosophila axis extension reveals how tissue boundaries drive polarized cell intercalation while limiting cell mixing.
    1. Cell Biology
    2. Developmental Biology

    The EMT transcription factor Snai1 maintains myocardial wall integrity by repressing intermediate filament gene expression

    Alessandra Gentile et al.
    The transcription factor Snai1b maintains the myocardial wall integrity by limiting cell extrusions and regulating the intermediate filament gene desmin b.
    1. Cell Biology
    2. Cancer Biology

    Defective apical extrusion signaling contributes to aggressive tumor hallmarks

    Yapeng Gu et al.
    Disrupting extrusion, a process that drives epithelial cell death, leads to increased cell survival, poor barrier function, and enhanced cell invasion and, thereby, promotes tumor initiation and progression.
    1. Chromosomes and Gene Expression
    2. Physics of Living Systems

    Chromosome organization by one-sided and two-sided loop extrusion

    Edward J Banigan et al.
    Seemingly contradictory findings of single-molecule and in vivo experiments on a major mechanism of chromosome organization are reconciled by computationally investigating mechanisms of loop extrusion that are consistent with both.
    1. Cell Biology
    2. Developmental Biology

    Anisotropic organization of circumferential actomyosin characterizes hematopoietic stem cells emergence in the zebrafish

    Mylene Lancino et al.
    Emergence of hematopoietic stem cells from an aortic component is a unique phenomenon of cell extrusion, with no equivalent in cell biology, and which is adapted to environmental constraints exerted by endothelial cells and hemodynamics forces.
    1. Biochemistry and Chemical Biology

    Efficient analysis of mammalian polysomes in cells and tissues using Ribo Mega-SEC

    Harunori Yoshikawa et al.
    Translationally active polysomes from mammalian cells/tissues are successfully separated with rapidity, high efficiency and exceptional reproducibility by a SEC-based approach, an accessible alternative to the conventional sucrose density gradient analysis.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Cohesin and condensin extrude DNA loops in a cell cycle-dependent manner

    Stefan Golfier et al.
    Reconstitution of DNA loop extrusion in cellular contexts using Xenopus egg extracts shows that condensin extrudes DNA loops non-symmetrically in metaphase, whereas cohesin extrudes DNA loops symmetrically in interphase.

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