2. Academic Validation
  3. Autophagy mediated by ROS-AKT-FoxO pathway is required for intestinal regeneration in echinoderms

Autophagy mediated by ROS-AKT-FoxO pathway is required for intestinal regeneration in echinoderms

  • Cell Commun Signal. 2025 Jan 7;23(1):8. doi: 10.1186/s12964-024-01993-0.
Chuili Zeng 1,  Ming Guo 1,  Ke Xiao 1,  Chenghua Li 2 3 4
Affiliations

Affiliations

  • 1 State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China.
  • 2 State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China. lichenghua@nbu.edu.cn.
  • 3 Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, PR China. lichenghua@nbu.edu.cn.
  • 4 Ningbo University, Zhejiang Province, Ningbo, 315211, P. R. China. lichenghua@nbu.edu.cn.
PMID: 39762855 DOI: 10.1186/s12964-024-01993-0
Abstract

Autophagy is essential for maintaining material balance and energy circulation and plays a critical role as a regulatory mechanism in tissue regeneration. However, current studies primarily describe this phenotype, with limited exploration of its molecular mechanisms. In this study, we provided the first evidence that Autophagy is required for intestinal regeneration in Apostichopus japonicus and identified a previously unrecognized regulatory mechanism involved in this process. We observed that Autophagy activation was significantly associated with enhanced regeneration, and its upregulation was shown to be regulated by Reactive Oxygen Species (ROS) bursts. Mechanistically, ROS induced the dephosphorylation of Forkhead box protein O (FOXO) through AjAKT dephosphorylation. The dephosphorylated AjFoxO translocated to the nucleus, where it bound to the promoters of AjLC3 and AjATG4, inducing their transcription. This study highlights the ROS-AjAKT-AjFoxO-AjATG4/AjLC3 pathway as a novel regulatory mechanism underlying autophagy-mediated intestinal regeneration in echinoderms, providing a reference for studying regenerative processes and cytological mechanisms in economically important echinoderms.

Keywords

Apostichopus japonicus; Autophagy; Forkhead box protein O; Intestine regeneration.

Figures
Products