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Updated: Jul 9, 2026
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High Resolution Whole Mount In Situ Hybridization within Zebrafish Embryos to Study Gene Expression and Function
Published on: October 19, 2013
Emilin genes are duplicated and dynamically expressed during zebrafish embryonic development
Martina Milanetto1, Natascia Tiso, Paola Braghetta
1Department of Histology, Microbiology, and Medical Biotechnologies; University of Padova, Padova, Italy.
Summary
Researchers identified eight emilin genes in zebrafish, revealing conserved structures and spatiotemporal expression patterns during embryonic development. These findings suggest potential roles for emilins in key morphogenetic processes in lower vertebrates.
Area of Science:
- Extracellular matrix biology
- Developmental biology
- Comparative genomics
Background:
- Emilins are extracellular matrix proteins characterized by an N-terminal cysteine-rich domain.
- Emilin-1 is associated with elastic fibers in mammals.
- Understanding emilin function in lower vertebrates is limited.
Purpose of the Study:
- To investigate the presence and expression of emilin family proteins in the zebrafish (Danio rerio).
- To explore the evolutionary conservation and developmental roles of emilins in a vertebrate model.
Main Methods:
- Bioinformatic analysis using sequence similarity tools to identify emilin genes in zebrafish.
- In situ hybridization to determine the spatiotemporal expression patterns of zebrafish emilin genes during embryonic development.
Main Results:
- Eight emilin family members were identified in zebrafish, each with two paralogs, exhibiting conserved structures with human orthologs.
- Zebrafish emilin gene expression is spatiotemporally regulated during embryogenesis.
- Expression patterns are site-specific and overlap, primarily in mesenchymal structures, with notable expression in the central nervous system and posterior notochord.
Conclusions:
- Zebrafish possess a diverse emilin gene family with conserved structural features.
- The specific expression patterns of zebrafish emilins suggest crucial roles in embryonic development and morphogenetic processes.
- This study provides insights into the evolution and function of emilins in lower vertebrates.
