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Updated: Jun 27, 2026
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Isolation and Characterization of Single Cells from Zebrafish Embryos
Published on: March 12, 2016
The lim domain only protein 7 is important in zebrafish heart development
Elisabeth B Ott1, Nynke M S van den Akker, Philippe A Sakalis
1Institute of Biology, Department of Molecular and Cellular Biology, University of Leiden, Leiden, The Netherlands.
Summary
LIM domain only protein 7 (LMO7) is crucial for embryonic heart development across vertebrates. This study reveals its expression patterns and essential functions in heart formation in zebrafish, chicken, and mouse embryos.
Area of Science:
- Developmental Biology
- Molecular Biology
- Genetics
Background:
- LIM domain only protein 7 (LMO7) is implicated in embryonic development and cancer.
- LMO7 interacts with the actin cytoskeleton, cell-cell adhesion molecules, and regulates transcription of muscle-related genes.
Purpose of the Study:
- To investigate the temporal and spatial expression of LMO7 during embryonic development in zebrafish, chicken, and mouse.
- To determine the role of LMO7 in vertebrate heart development.
Main Methods:
- In situ hybridization was used to analyze LMO7 gene expression patterns.
- Gene knockdown experiments were performed in zebrafish embryos to assess functional roles.
Main Results:
- LMO7 expression was observed in key developing heart structures (outflow/inflow tracts, pro-epicardial organ, second heart field) in mouse and chicken embryos.
- Zebrafish embryos with LMO7 knockdown exhibited severe heart development defects, including issues with the conduction system and heart localization.
Conclusions:
- This study provides the first comprehensive developmental analysis of LMO7.
- LMO7 plays essential roles in vertebrate heart development, with conserved and distinct expression patterns across species.
