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Peroxiredoxin stabilization of DE-cadherin promotes primordial germ cell adhesion.

Dev. Cell. 2011 Feb 15;20(2):233-43
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摘要


Regulated adhesion between cells and their environment is critical for normal cell migration. We have identified mutations in a gene encoding the Drosophila hydrogen peroxide (H₂O₂)-degrading enzyme Jafrac1, which lead to germ cell adhesion defects. During gastrulation, primordial germ cells (PGCs) associate tightly with the invaginating midgut primordium as it enters the embryo; however, in embryos from jafrac1 mutant mothers this association is disrupted, leaving some PGCs trailing on the outside of the embryo. We observed similar phenotypes in embryos from DE-cadherin/shotgun (shg) mutant mothers and were able to rescue the jafrac1 phenotype by increasing DE-cadherin levels. This and our biochemical evidence strongly suggest that Jafrac1-mediated reduction of H₂O₂ is required to maintain DE-cadherin protein levels in the early embryo. Our results present in vivo evidence of a peroxiredoxin regulating DE-cadherin-mediated adhesion. Copyright © 2011 Elsevier Inc. All rights reserved.

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