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Title: Drebrin-mediated microtubule–actomyosin coupling steers cerebellar granule neuron nucleokinesis and migration pathway selection

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms14484· OSTI ID:1346667
 [1];  [1];  [1];  [1];  [1];  [1];  [2];  [3];  [4];  [1]
  1. St. Jude Children's Research Hospital, Memphis, TN (United States). Department of Developmental Neurobiology
  2. St. Jude Children's Research Hospital, Memphis, TN (United States). Cell & Tissue Imaging Center
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Imaging, Signals and Machine Learning Group
  4. King's College London (United Kingdom). Medical Research Council MRC Centre for Developmental Neurobiology

Neuronal migration from a germinal zone to a final laminar position is essential for the morphogenesis of neuronal circuits. While it is hypothesized that microtubule–actomyosin crosstalk is required for a neuron’s ‘two-stroke’ nucleokinesis cycle, the molecular mechanisms controlling such crosstalk are not defined. By using the drebrin microtubule–actin crosslinking protein as an entry point into the cerebellar granule neuron system in combination with super-resolution microscopy, we investigate how these cytoskeletal systems interface during migration. Lattice light-sheet and structured illumination microscopy reveal a proximal leading process nanoscale architecture wherein f-actin and drebrin intervene between microtubules and the plasma membrane. Functional perturbations of drebrin demonstrate that proximal leading process microtubule–actomyosin coupling steers the direction of centrosome and somal migration, as well as the switch from tangential to radial migration. Finally, the Siah2 E3 ubiquitin ligase antagonizes drebrin function, suggesting a model for control of the microtubule–actomyosin interfaces during neuronal differentiation.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE; Work for Others (WFO)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1346667
Journal Information:
Nature Communications, Vol. 8; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 33 works
Citation information provided by
Web of Science

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Cited By (15)

Dual role for DOCK7 in tangential migration of interneuron precursors in the postnatal forebrain journal October 2017
Inter-dependent apical microtubule and actin dynamics orchestrate centrosome retention and neuronal delamination journal October 2017
Siah2 integrates mitogenic and extracellular matrix signals linking neuronal progenitor ciliogenesis with germinal zone occupancy journal October 2020
Cytoskeletal control of nuclear migration in neurons and non-neuronal cells journal November 2018
Lattice light sheet microscopy using tiling lattice light sheets journal January 2019
Nesprins and opposing microtubule motors generate a point force that drives directional nuclear motion in migrating neurons journal March 2018
Mechanisms of 3D cell migration journal October 2019
Siah2 integrates mitogenic and extracellular matrix signals linking neuronal progenitor ciliogenesis with germinal zone occupancy posted_content August 2019
Actin–microtubule crosstalk in cell biology journal October 2018
Correlative three-dimensional super-resolution and block face electron microscopy of whole vitreously frozen cells posted_content September 2019
Correlative three-dimensional super-resolution and block-face electron microscopy of whole vitreously frozen cells journal January 2020
Mechanical Regulation of Nuclear Translocation in Migratory Neurons journal March 2020
Seven in Absentia E3 Ubiquitin Ligases: Central Regulators of Neural Cell Fate and Neuronal Polarity journal October 2017
Dynamic Interaction Between Microtubules and the Nucleus Regulates Nuclear Movement During Neuronal Migration journal January 2018
PlexinD1 signaling controls morphological changes and migration termination in newborn neurons journal January 2018