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Dev Biol 2023 Jun 02;500:31-39. doi: 10.1016/j.ydbio.2023.06.001.
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Downregulation of Yap1 during limb regeneration results in defective bone formation in axolotl.

Bay S , Öztürk G , Emekli N , Demircan T .

The Hippo pathway plays an imperative role in cellular processes such as differentiation, regeneration, cell migration, organ growth, apoptosis, and cell cycle. Transcription coregulator component of Hippo pathway, YAP1, promotes transcription of genes involved in cell proliferation, migration, differentiation, and suppressing apoptosis. However, its role in epimorphic regeneration has not been fully explored. The axolotl is a well-established model organism for developmental biology and regeneration studies. By exploiting its remarkable regenerative capacity, we investigated the role of Yap1 in the early blastema stage of limb regeneration. Depleting Yap1 using gene-specific morpholinos attenuated the competence of axolotl limb regeneration evident in bone formation defects. To explore the affected downstream pathways from Yap1 down-regulation, the gene expression profile was examined by employing LC-MS/MS technology. Based on the generated data, we provided a new layer of evidence on the putative roles of increased protease inhibition and immune system activities and altered ECM composition in diminished bone formation capacity during axolotl limb regeneration upon Yap1 deficiency. We believe that new insights into the roles of the Hippo pathway in complex structure regeneration were granted in this study.

PubMed ID: 37271360
Article link: Dev Biol

Species referenced: Xenopus laevis
Genes referenced: apoa4 bmp2 bmp4 idh1 kng1 ldb3 mybpc3 myl4 prdx2 runx2 smad3 smad7 sox13 sox6 sox9 tgfb1 tnni1 tpm2 yap1
GO keywords: cell proliferation [+]

Article Images: [+] show captions