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Expression of the BMP antagonist Dan during murine forebrain development
Anthony S Kim1, Samuel J Pleasure
1Department of Neurology, Programs in Neuroscience, Developmental Biology and Biomedical Sciences, University of California, San Francisco, CA 94143-0435, USA.
Brain Research. Developmental Brain Research
|October 2, 2003
Summary
Dan (Differential screening-selected gene aberrative in neuroblastoma) is a secreted glycoprotein inhibitor of TGF-beta pathways. Its expression in the developing mouse forebrain shows specific spatiotemporal patterns, particularly in the cortex and hippocampus.
Area of Science:
- Neuroscience
- Developmental Biology
- Molecular Biology
Background:
- Dan (Differential screening-selected gene aberrative in neuroblastoma) is a secreted glycoprotein.
- It functions as an inhibitor of transforming growth factor-beta (TGF-beta) and bone morphogenic protein signaling pathways.
- These pathways are crucial for cellular differentiation and development.
Purpose of the Study:
- To investigate the spatiotemporal expression patterns of Dan during murine forebrain development.
- To correlate Dan expression with its known ligand targets in the developing forebrain.
Main Methods:
- Analysis of Dan expression in murine forebrain from embryonic day 10.5 to postnatal day 14.
- Examination of GDF-5, GDF-6, and GDF-7 expression in the forebrain.
Main Results:
- Dan exhibits specific spatiotemporal expression during forebrain development.
- High expression in cortical fibroblasts early on, with later expression in hippocampal CA3 neurons, thalamus, and amygdala.
- GDF-5 expression in Cajal-Retzius cells is adjacent to Dan expression in the meninges.
Conclusions:
- Dan expression is dynamically regulated during forebrain development.
- Specific expression patterns suggest roles in different brain regions.
- Potential interactions with GDF-5 warrant further investigation.