Isolation and characterization of mouse dishevelled-3

Area of Science:

• Developmental Biology
• Molecular Genetics
• Gene Expression Analysis

Background:

• The Drosophila dishevelled (dsh) gene is essential for wingless/Wnt signal transduction during development.
• A mouse homolog, Dvl1, has been previously characterized.
• Understanding the Dishevelled gene family in mammals is critical for deciphering developmental pathways.

Purpose of the Study:

• To identify and characterize novel members of the mouse Dishevelled (Dvl) gene family.
• To investigate the expression patterns of the newly identified Dvl3 gene in adult mice and developing embryos.

Main Methods:

• RT-PCR with degenerate primers was used to isolate the Dvl3 gene.
• Sequence analysis was performed to determine amino acid identity with other Dvl proteins.
• Expression analysis was conducted using adult mouse tissues and embryos at various developmental stages.

Main Results:

• A novel mouse Dishevelled gene, Dvl3, was identified and mapped to chromosome 16.
• Dvl3 shares significant amino acid identity with Dvl1 and Dvl2, with highest conservation (97%) in the PDZ domain.
• Dvl3 exhibits widespread expression in adult mouse tissues (brain, ovary, heart) and is dynamically expressed throughout embryonic development, with notable levels in the central nervous system, sensory organs, and developing structures.

Conclusions:

• Dvl3 is a significant member of the mouse Dishevelled gene family, likely playing a conserved role in developmental signaling pathways.
• The expression profile of Dvl3 suggests its involvement in the development of the nervous system, sensory organs, and other key embryonic structures.
• Further research into Dvl3 function will elucidate its specific roles in mammalian development and Wnt signaling.