PUBLICATION
Zebrafish as a model for Catel-Manzke syndrome-identification and characterization of the zebrafish TGDS ortholog
- Authors
- Coppola, M.R., Bellitto, D., Asgari, E., Bazzurro, V., Casucci, G., Piacente, F., Bozzo, M., Ceresa, D., Parisi, C., Winata, C., Candiani, S., Tonetti, M.
- ID
- ZDB-PUB-251030-5
- Date
- 2025
- Source
- The FEBS journal 293: 2248-2269 (Journal)
- Registered Authors
- Bazzurro, Virginia, Candiani, Simona, Parisi, Costantino
- Keywords
- CRISPR/Cas9, Catel–Manzke syndrome, TGDS, craniofacial development, zebrafish
- MeSH Terms
- none
- PubMed
- 41159851 Full text @ FEBS J.
Citation
Coppola, M.R., Bellitto, D., Asgari, E., Bazzurro, V., Casucci, G., Piacente, F., Bozzo, M., Ceresa, D., Parisi, C., Winata, C., Candiani, S., Tonetti, M. (2025) Zebrafish as a model for Catel-Manzke syndrome-identification and characterization of the zebrafish TGDS ortholog. The FEBS journal. 293:2248-2269.
Abstract
Catel-Manzke syndrome (CMS) is a rare genetic disorder associated with mutations in the TDP-glucose 4,6-dehydratase (TGDS) gene, the function of which in vertebrates remains unclear. This study investigated the zebrafish ortholog tgds to assess its suitability for modeling the disease. During development, the tgds transcript exhibits a conserved biphasic expression pattern with an initial maternal contribution followed by a second wave of expression after gastrulation. Recombinant zebrafish Tgds expressed in Escherichia coli demonstrated UDP-D-glucose 4,6-dehydratase (EC4.2.1.76) activity, similar to TGDS orthologs in lower eukaryotes, where it acts as the first step in the L-rhamnose biosynthetic pathway. This finding suggests the presence of a yet unidentified pathway in vertebrates. Furthermore, CMS-associated mutations in conserved residues significantly impair enzyme activity and stability. CRISPR/Cas9-mediated F0 knockout of tgds resulted in a range of developmental defects in zebrafish. In particular, craniofacial cartilage alterations, associated with a decrease in sulfate glycosaminoglycan content, mirrored some skeletal features observed in humans with CMS. These findings establish the zebrafish as a relevant model to further explore CMS pathogenesis and the in vivo function of tgds.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping