ZFIN ID: ZDB-PUB-091023-20
Comparative expression profiling reveals an essential role for Raldh2 in epimorphic regeneration
Mathew, L.K., Sengupta, S., Franzosa, J., Perry, J., La Du, J., Andreasen, E.A., and Tanguay, R.L.
Date: 2009
Source: The Journal of biological chemistry 284(48): 33642-33653 (Journal)
Registered Authors: Andreasen, Eric A., La Du, Jane K., Mathew, Lijoy K., Tanguay, Robert L.
Keywords: CELL/Cell-Cell Interaction, CELL/Differentiation, DEVELOPMENT DIFFERENTIATION, DEVELOPMENT DIFFERENTIATION/Tissue, DEVELOPMENT DIFFERENTIATION/ Organ, GENE/Regulation, SIGNAL TRANSDUCTION
Microarrays: GEO:GSE10188
MeSH Terms: Animals; Butadienes/pharmacology; Cluster Analysis; Embryo, Nonmammalian/embryology; Embryo, Nonmammalian/injuries (all 35) expand
PubMed: 19801676 Full text @ J. Biol. Chem.
ABSTRACT
Zebrafish have the remarkable ability to regenerate body parts including the heart and fins by a process referred to as epimorphic regeneration. Recent studies have illustrated that similar to adult zebrafish, early life stage-larvae also possess the ability to regenerate the caudal fin. A comparative microarray analysis was used to determine the degree of conservation in gene expression among the regenerating adult caudal fin, adult heart and larval fin. Results indicate that these tissues respond to amputation/injury with strikingly similar genomic responses. Comparative analysis revealed raldh2, a rate-limiting enzyme for the synthesis of Retinoic acid (RA), as one of the most highly induced genes across the three regeneration platforms. In situ localization and functional studies indicate that raldh2 expression is critical for the formation of wound epithelium and blastema. Patterning during regenerative outgrowth was considered to be the primary function of RA signaling; however our results suggest that it is also required for early stages of tissue regeneration. Expression of raldh2 is regulated by Wnt and Fgf/ERK signaling.
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