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Updated: Aug 8, 2025
In vivo Electroporation of Morpholinos into the Regenerating Adult Zebrafish Tail Fin
Published on: March 29, 2012
Fibroblast growth factor pathway component expression in the regenerating zebrafish fin
Nicole Cudak1, Alejandra Cristina López-Delgado1, Sebastian Keil1
1Center for Regenerative Therapies TU Dresden (CRTD), Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden, Dresden, Germany; Center for Healthy Aging, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
Fibroblast growth factor (Fgf) signaling is crucial for zebrafish fin regeneration. This study maps Fgf pathway gene expression in regenerating fins, revealing specific patterns for key ligands and all receptors.
Area of Science:
- Developmental Biology
- Regenerative Medicine
- Molecular Biology
Background:
- Adult zebrafish possess remarkable appendage regeneration capabilities, including fin rays.
- Fibroblast growth factor (Fgf) signaling is vital for morphogenetic processes and essential for fin regeneration.
- Dysregulation of Fgf pathway genes causes skeletal growth abnormalities in various species, highlighting its role in tissue growth control.
Purpose of the Study:
- To investigate the expression patterns of Fibroblast growth factor (Fgf) signaling pathway components in regenerating zebrafish fins.
- To identify novel expression patterns for specific Fgf ligands and all Fgf receptors in the regenerating fin structure.
Main Methods:
- Utilized RNA in situ hybridization to analyze the expression of approximately half of the Fgf ligands and all known Fgf receptors.
- Examined gene expression localization within the regenerating zebrafish fin structures.
Main Results:
- Confirmed expression of all five Fgf receptors (fgfr1a, fgfr1b, fgfr2, fgfr3, and fgfr4) in specific regions of the regenerating fin.
- Identified and reported novel expression patterns for Fgf ligands fgf7, fgf10b, fgf12b, fgf17b, and the receptor fgfr1b.
- Demonstrated that most tested Fgf ligands and all Fgf receptors are expressed in distinct domains within the fin regenerate.
Conclusions:
- The study provides a comprehensive spatial map of Fgf signaling pathway component expression during zebrafish fin regeneration.
- Findings lay the groundwork for future research into the domain-specific functions of Fgf signaling in appendage regeneration.
- Highlights the conserved importance of Fgf signaling in skeletal development and regeneration across vertebrates.
