ZFIN ID: ZDB-PUB-181021-3
NADPH-Oxidase-derived reactive oxygen species are required for cytoskeletal organization, proper localization of E-cadherin and cell motility during zebrafish epiboly
Mendieta-Serrano, M.A., Mendez-Cruz, F.J., Antúnez-Mojica, M., Schnabel, D., Alvarez, L., Cárdenas, L., Lomelí, H., Ruiz-Santiesteban, J.A., Salas-Vidal, E.
Date: 2018
Source: Free radical biology & medicine   130: 82-98 (Journal)
Registered Authors: Lomeli, Hilda, Salas-Vidal, Enrique, Schnabel, Denhi
Keywords: E-cadherin, NADPH oxidases, Reactive oxygen species, VAS2870, cell adhesion, cell motility, cytoskeleton, epiboly, extracellular signaling, hydrogen peroxide, zebrafish
MeSH Terms:
  • Animals
  • Blastoderm/metabolism*
  • Cadherins/metabolism
  • Cell Adhesion
  • Cell Movement
  • Cytoskeleton/metabolism*
  • Embryo, Nonmammalian
  • Morphogenesis
  • NADPH Oxidases/metabolism*
  • Reactive Oxygen Species/metabolism*
  • Zebrafish/physiology*
  • Zebrafish Proteins/metabolism
PubMed: 30342187 Full text @ Free Radic. Biol. Med.
ABSTRACT
Cell movements are essential for morphogenesis during animal development. Epiboly is the first morphogenetic process in zebrafish in which cells move en masse to thin and spread the deep and enveloping cell layers of the blastoderm over the yolk cell. While epiboly has been shown to be controlled by complex molecular networks, the contribution of reactive oxygen species (ROS) to this process has not previously been studied. Here, we show that ROS are required for epiboly in zebrafish. Visualization of ROS in whole embryos revealed dynamic patterns during epiboly progression. Significantly, inhibition of NADPH oxidase activity leads to a decrease in ROS formation, delays epiboly, alters E-cadherin and cytoskeleton patterns and, by 24hours post-fertilization, decreases embryo survival, effects that are rescued by hydrogen peroxide treatment. Our findings suggest that a delicate ROS balance is required during early development and that disruption of that balance interferes with cell adhesion, leading to defective cell motility and epiboly progression.
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