Abstract
Left-sided expression of Nodal in the lateral plate mesoderm is a conserved feature necessary for the establishment of normal left-right asymmetry during vertebrate embryogenesis. By using gain- and loss-of-function experiments in zebrafish and mouse, we show that the activity of the Notch pathway is necessary and sufficient for Nodal expression around the node, and for proper left-right determination. We identify Notch-responsive elements in the Nodal promoter, and unveil a direct relationship between Notch activity and Nodal expression around the node. Our findings provide evidence for a mechanism involving Notch activity that translates an initial symmetry-breaking event into asymmetric gene expression.
Original language | English (US) |
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Pages (from-to) | 1213-1218 |
Number of pages | 6 |
Journal | Genes and Development |
Volume | 17 |
Issue number | 10 |
DOIs | |
State | Published - May 15 2003 |
Externally published | Yes |
Keywords
- Left-right asymmetry
- Nodal
- Notch signaling
- Pitx2
- Sonic hedgehog
- Zebrafish
ASJC Scopus subject areas
- General Medicine