Transcriptomics

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Hyaluronic acid synthesis is required for zebrafish tail fin regeneration


ABSTRACT: Using genome-wide transcriptional profiling and whole-mount expression analyses of zebrafish larvae, we have identified hyaluronan synthase 3 (has3) as an upregulated gene during caudal fin regeneration. has3 expression is induced in the wound epithelium within hours after tail amputation, and its onset and maintenance requires fibroblast growth factor, phosphoinositide 3-kinase, and transforming growth factor-β signaling. Inhibition of hyaluronic acid (HA) synthesis by the small molecule 4-methylumbelliferone (4-MU) impaired tail regeneration in zebrafish larvae by preventing injury-induced cell proliferation. In addition, 4-MU reduced the expression of genes associated with wound epithelium and blastema function. Treatment with the glycogen synthase 3-kinase inhibitors rescued 4-MU-induced defects in cell proliferation and tail regeneration, even though only a subset of wound epithelium and blastema markers was restored. Our findings uncover a role for HA biosynthesis in zebrafish tail regeneration and its epistatic relationships with other regenerative processes.

ORGANISM(S): Danio rerio

PROVIDER: GSE72422 | GEO | 2017/03/10

SECONDARY ACCESSION(S): PRJNA295429

REPOSITORIES: GEO

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