303 results found
    1. Cell Biology
    2. Developmental Biology

    Specific polar subpopulations of astral microtubules control spindle orientation and symmetric neural stem cell division

    Felipe Mora-Bermúdez et al.
    Mammalian neural stem cells specifically regulate a subset of astral microtubules to govern the subtle changes in spindle orientation that underlie symmetric vs asymmetric cell division during embryonic cortical neurogenesis.
    1. Cell Biology

    Kinetochores attached to microtubule-ends are stabilised by Astrin bound PP1 to ensure proper chromosome segregation

    Duccio Conti et al.
    Human chromosome-microtubule attachments are stabilised by Astrin-mediated dynamic delivery of PP1 phosphatase to the attachment site, which ensures the normal segregation of chromosomes.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Astrin-SKAP complex reconstitution reveals its kinetochore interaction with microtubule-bound Ndc80

    David M Kern et al.
    Biochemical and cell biological analyses reveal that the Astrin-SKAP complex acts to stabilize kinetochore-microtubule interactions through its intrinsic microtubule binding activity and its association with the Ndc80 complex, the core component of the kinetochore-microtubule interface.
    1. Cell Biology
    2. Physics of Living Systems

    Co-movement of astral microtubules, organelles and F-actin by dynein and actomyosin forces in frog egg cytoplasm

    James F Pelletier et al.
    Live imaging of multiple cytoplasmic networks in frog egg extracts calls for new models for how egg cytoplasm is physically organized during cleavage divisions.
    1. Cell Biology

    Dynein–Dynactin–NuMA clusters generate cortical spindle-pulling forces as a multi-arm ensemble

    Masako Okumura et al.
    Optogenetic reconstitution reveals core functional modules and architecture of the cortical force-generating machinery in human cells.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    A mitotic kinase scaffold depleted in testicular seminomas impacts spindle orientation in germ line stem cells

    Heidi Hehnly et al.
    A protein kinase complex that is important for cell division is lost in testicular seminoma, which is a common cancer in men.
    1. Cell Biology

    Orderly assembly underpinning built-in asymmetry in the yeast centrosome duplication cycle requires cyclin-dependent kinase

    Marco Geymonat et al.
    The polarized orientation of the mitotic spindle in budding yeast arises from spindle pole structural and functional asymmetry subject to cell cycle control.
    1. Cell Biology
    2. Developmental Biology

    Optogenetic dissection of mitotic spindle positioning in vivo

    Lars-Eric Fielmich et al.
    New germline gene expression, knockout, and optogenetic tools reveal essential roles for Gα-GPR-1,2/Pins as a regulatable membrane anchor and LIN-5/NuMA as an activator of cortical dynein in mitotic spindle positioning.
    1. Neuroscience

    Tight junction protein occludin regulates progenitor Self-Renewal and survival in developing cortex

    Raphael M Bendriem et al.
    That early cortical neural progenitor divisions strictly require OCLN isoform expression is a paradigm shift in the functional consideration of this protein best known for promoting between-cell barrier functions.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Translational regulation of protrusion-localized RNAs involves silencing and clustering after transport

    Konstadinos Moissoglu et al.
    RNAs enriched at cell protrusions are translated regardless of their location in the cytoplasm but are dynamically repressed in retracting protrusions and incorporated into heterogeneous RNA clusters.

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