Title: Rho-kinase and myosin II affect dynamic neural crest cell behaviors during epithelial to mesenchymal transition in vivo
Authors: Berndt, Jason D ×
Clay, Matthew R
Langenberg, Tobias
Halloran, Mary C #
Issue Date: Dec-2008
Publisher: Academic Press
Series Title: Developmental Biology vol:324 issue:2 pages:236-44
Article number: 10.1016/j.ydbio.2008.09.013
Abstract: The induction and migration of neural crest cells (NCCs) are essential to the development of craniofacial structures and the peripheral nervous system. A critical step in the development of NCCs is the epithelial to mesenchymal transition (EMT) that they undergo in order to initiate migration. Several transcription factors are important for the NCC EMT. However, less is known about the effectors regulating changes in cell adhesion, the cytoskeleton, and cell motility associated with the EMT or about specific changes in the behavior of cells undergoing EMT in vivo. We used time-lapse imaging of NCCs in the zebrafish hindbrain to show that NCCs undergo a stereotypical series of behaviors during EMT. We find that loss of cell adhesion and membrane blebbing precede filopodial extension and the onset of migration. Live imaging of actin dynamics shows that actin localizes differently in blebs and filopodia. Moreover, we find that disruption of myosin II or Rho-kinase (ROCK) activity inhibits NCC blebbing and causes reduced NCC EMT. These data reveal roles for myosin II and ROCK in NCC EMT in vivo, and provide a detailed characterization of NCC behavior during EMT that will form a basis for further mechanistic studies.
ISSN: 0012-1606
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Non-KU Leuven Association publications
× corresponding author
# (joint) last author

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