PUBLICATION
Extensive jejunal injury is repaired by migration and transdifferentiation of ileal enterocytes in zebrafish
- Authors
- Wei, X., Tan, X., Chen, Q., Jiang, Y., Wu, G., Ma, X., Fu, J., Li, Y., Gang, K., Yang, Q., Ni, R., He, J., Luo, L.
- ID
- ZDB-PUB-230622-39
- Date
- 2023
- Source
- Cell Reports 42: 112660112660 (Journal)
- Registered Authors
- He, Jianbo, Luo, Lingfei
- Keywords
- CP: Stem cell research, NF-κB, cell migration, enterocyte regeneration, intestinal failure, jejunum, stem cell, transdifferentiation
- MeSH Terms
-
- Zebrafish
- Cell Transdifferentiation
- Intestinal Mucosa
- Enterocytes*
- Animals
- Necrosis
- Jejunum*
- PubMed
- 37342912 Full text @ Cell Rep.
Citation
Wei, X., Tan, X., Chen, Q., Jiang, Y., Wu, G., Ma, X., Fu, J., Li, Y., Gang, K., Yang, Q., Ni, R., He, J., Luo, L. (2023) Extensive jejunal injury is repaired by migration and transdifferentiation of ileal enterocytes in zebrafish. Cell Reports. 42:112660112660.
Abstract
A major cause of intestinal failure (IF) is intestinal epithelium necrosis and massive loss of enterocytes, especially in the jejunum, the major intestinal segment in charge of nutrient absorption. However, mechanisms underlying jejunal epithelial regeneration after extensive loss of enterocytes remain elusive. Here, we apply a genetic ablation system to induce extensive damage to jejunal enterocytes in zebrafish, mimicking the jejunal epithelium necrosis that causes IF. In response to injury, proliferation and filopodia/lamellipodia drive anterior migration of the ileal enterocytes into the injured jejunum. The migrated fabp6+ ileal enterocytes transdifferentiate into fabp2+ jejunal enterocytes to fulfill the regeneration, consisting of dedifferentiation to precursor status followed by redifferentiation. The dedifferentiation is activated by the IL1β-NFκB axis, whose agonist promotes regeneration. Extensive jejunal epithelial damage is repaired by the migration and transdifferentiation of ileal enterocytes, revealing an intersegmental migration mechanism of intestinal regeneration and providing potential therapeutic targets for IF caused by jejunal epithelium necrosis.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping