81 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, Fumio Matsuzaki, Wieland B Huttner
    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
    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, Christine M Field ... Timothy J Mitchison
    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, Toyoaki Natsume ... Tomomi Kiyomitsu
    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, David Canton ... John D Scott
    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
    2. Physics of Living Systems

    Stoichiometric interactions explain spindle dynamics and scaling across 100 million years of nematode evolution

    Reza Farhadifar, Che-Hang Yu ... Daniel J Needleman
    Stoichiometric interactions between microtubules and cortical force-generators set spindle size, position and dynamics, and its scaling with cell size in nematode species.
    1. Cell Biology

    Microtubule plus-ends act as physical signaling hubs to activate RhoA during cytokinesis

    Vikash Verma, Thomas J Maresca
    MT plus-end-mediated recruitment of a cortical pool of ECT2 trigger RhoA activation upon contact, which results in localized contractility during cytokinesis.
    1. Cell Biology
    2. Computational and Systems Biology

    Remote control of microtubule plus-end dynamics and function from the minus-end

    Xiuzhen Chen, Lukas A Widmer ... Yves Barral
    A mechanism for yeast centrosomes to differentiate the microtubule cytoskeleton.
    1. Cancer Biology
    2. Cell Biology

    Augmin prevents merotelic attachments by promoting proper arrangement of bridging and kinetochore fibers

    Valentina Štimac, Isabella Koprivec ... Iva M Tolić
    STED microscopy of human mitotic spindles reveals how augmin-nucleated microtubules protect the cell from erroneous kinetochore-microtubule attachments and ensure a highly organized architecture of the spindle required for mitotic fidelity.
    1. Cell Biology

    α-/γ-Taxilin are required for centriolar subdistal appendage assembly and microtubule organization

    Dandan Ma, Fulin Wang ... Jianguo Chen
    Super-resolution microscopy, biochemical and functional analyses reveal how α-taxilin and γ-taxilin are assembled at the subdistal appendages and their roles in microtubule organization.
    1. Cell Biology

    Combined effect of cell geometry and polarity domains determines the orientation of unequal division

    Benoit G Godard, Remi Dumollard ... Alex McDougall
    Cell geometry and polarity domains act in concert to determine spindle positioning, with cell geometry modulating the effect of cortical polarity domains by influencing the position of the spindle relative to those polarity domains.

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