Hydrogen peroxide is necessary during tail regeneration in juvenile axolotl - PubMed
. 2022 Jun;251(6):1054-1076.
doi: 10.1002/dvdy.386. Epub 2021 Jun 24.
Affiliations
- PMID: 34129260
- DOI: 10.1002/dvdy.386
Free article
Hydrogen peroxide is necessary during tail regeneration in juvenile axolotl
Belfran Carbonell M et al. Dev Dyn. 2022 Jun.
Free article
Abstract
Background: Hydrogen peroxide (H2 O2 ) is a key reactive oxygen species (ROS) generated during appendage regeneration among vertebrates. However, its role during tail regeneration in axolotl as redox signaling molecule is unclear.
Results: Treatment with exogenous H2 O2 rescues inhibitory effects of apocynin-induced growth suppression in tail blastema cells leading to cell proliferation. H2 O2 also promotes recruitment of immune cells, regulate the activation of AKT kinase and Agr2 expression during blastema formation. Additionally, ROS/H2 O2 regulates the expression and transcriptional activity of Yap1 and its target genes Ctgf and Areg.
Conclusions: These results show that H2 O2 is necessary and sufficient to promote tail regeneration in axolotls. Additionally, Akt signaling and Agr2 were identified as ROS targets, suggesting that ROS/H2 O2 is likely to regulate epimorphic regeneration through these signaling pathways. In addition, ROS/H2 O2 -dependent-Yap1 activity is required during tail regeneration.
Keywords: Agr2; Akt signaling; ROS signaling; Yap1; blastema; salamander.
© 2021 American Association for Anatomy.
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