ZFIN ID: ZDB-PUB-180130-10
Cell volume changes contribute to epithelial morphogenesis in zebrafish Kupffer's vesicle
Dasgupta, A., Merkel, M., Clark, M.J., Jacob, A.E., Dawson, J.E., Manning, M.L., Amack, J.D.
Date: 2018
Source: eLIFE   7: (Journal)
Registered Authors: Amack, Jeffrey, Dasgupta, Agnik
Keywords: cell biology, developmental biology, stem cells, zebrafish
MeSH Terms:
  • Animals
  • Biological Transport
  • Cell Size*
  • Epithelial Cells/cytology*
  • Epithelial Cells/physiology*
  • Epithelium/embryology*
  • Ions/metabolism
  • Morphogenesis*
  • Zebrafish/embryology*
PubMed: 29376824 Full text @ Elife
How epithelial cell behaviors are coordinately regulated to sculpt tissue architecture is a fundamental question in biology. Kupffer's vesicle (KV), a transient organ with a fluid-filled lumen, provides a simple system to investigate the interplay between intrinsic cellular mechanisms and external forces during epithelial morphogenesis. Using 3-dimensional (3D) analyses of single cells we identify asymmetric cell volume changes along the anteroposterior axis of KV that coincide with asymmetric cell shape changes. Blocking ion flux prevents these cell volume changes and cell shape changes. Vertex simulations suggest cell shape changes do not depend on lumen expansion. Consistent with this prediction, asymmetric changes in KV cell volume and shape occur normally when KV lumen growth fails due to leaky cell adhesions. These results indicate ion flux mediates cell volume changes that contribute to asymmetric cell shape changes in KV, and that these changes in epithelial morphology are separable from lumen-generated forces.