mCelsr1 is an evolutionarily conserved seven-pass transmembrane receptor and is expressed during mouse embryonic...

Area of Science:

• Developmental Biology
• Genetics
• Molecular Biology

Background:

• The Celsr gene family is ancient, with homologous genes found in invertebrates like C. elegans and D. melanogaster.
• Mcelsr1 encodes a large protein (3034 amino acids) with seven membrane-spanning domains, similar to peptide hormone binding G-protein coupled receptors.
• The extracellular domain of Mcelsr1 contains epidermal growth factor-like repeats, laminin A G-domains, and cadherin repeats.

Purpose of the Study:

• To characterize the mouse Celsr1 (mCelsr1) gene and its protein product.
• To investigate the expression patterns of mCelsr1 during embryonic development, particularly in the central nervous system.
• To understand the potential role of mCelsr1 in developmental processes.

Main Methods:

• Bioinformatic analysis to predict protein structure and homology.
• mRNA expression analysis during mouse embryogenesis.
• Detailed observation of gene expression localization in the developing central nervous system.

Main Results:

• mCelsr1 mRNA expression is detected before gastrulation and is primarily restricted to ectodermal derivatives.
• Expression is tightly regulated in the developing central nervous system (CNS).
• Specific expression patterns include segmentally-restricted expression in the developing hindbrain and dynamic dorso-ventrally restricted stripes in the spinal cord.

Conclusions:

• Mcelsr1 plays a role in early embryonic development, particularly in ectodermal tissues and the CNS.
• The specific expression patterns suggest a role in patterning and development of the hindbrain and spinal cord.
• The ancient nature of the Celsr gene family highlights its conserved importance in developmental processes across species.