Reemployment of Kupffer's vesicle cells into axial and paraxial mesoderm via transdifferentiation
- Ikeda, T., Inamori, K., Kawanishi, T., Takeda, H.
- Development, growth & differentiation 64(3): 163-177 (Journal)
- Registered Authors
- Takeda, Hiroyuki
- Kupffer’s vesicle, dand5, transdifferentiation, zebrafish
- MeSH Terms
- Body Patterning*/physiology
- Cell Transdifferentiation
- Embryo, Nonmammalian/metabolism
- Gene Expression Regulation, Developmental
- Zebrafish Proteins/genetics
- Zebrafish Proteins/metabolism
- 35129208 Full text @ Dev. Growth Diff.
Ikeda, T., Inamori, K., Kawanishi, T., Takeda, H. (2022) Reemployment of Kupffer's vesicle cells into axial and paraxial mesoderm via transdifferentiation. Development, growth & differentiation. 64(3):163-177.
Kupffer's vesicle (KV) in the teleost embryo is a fluid-filled vesicle surrounded by a layer of epithelial cells with rotating primary cilia. KV transiently acts as the left-right organizer and degenerates after the establishment of left-right asymmetric gene expression. Previous labelling experiments in zebrafish embryos indicated that descendants of KV-epithelial cells are incorporated into mesodermal tissues after the collapse of KV. However, the overall picture of their differentiation potency had been unclear due to the lack of suitable genetic tools and molecular analyses. In the present study, we established a novel zebrafish transgenic line with a promoter of dand5, in which all KV-epithelial cells and their descendants are specifically labelled until the larval stage. We found that KV-epithelial cells undergo epithelial-mesenchymal transition upon KV collapse and infiltrate into adjacent mesodermal progenitors, the presomitic mesoderm and chordoneural hinge. Once incorporated, the descendants of KV-epithelial cells expressed distinct mesodermal differentiation markers and contributed to the mature populations such as the axial muscles and notochordal sheath through normal developmental process. These results indicate that differentiated KV-epithelial cells possess unique plasticity in that they are reemployed into mesodermal lineages through transdifferentiation after they complete their initial role in KV.
Genes / Markers
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Engineered Foreign Genes