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Updated: Jul 4, 2026
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Studying Wnt Signaling During Patterning of Conducting Airways
Published on: October 16, 2016
An FGF-WNT gene regulatory network controls lung mesenchyme development
Yongjun Yin1, Andrew C White, Sung-Ho Huh
1Department of Developmental Biology, Washington University School of Medicine, Campus Box 8103, 660 S Euclid Avenue, St Louis, MO 63110, USA.
Developmental Biology
|June 6, 2008
Summary
Fibroblast growth factor 9 (FGF9) and WNT-beta-Catenin signaling pathways are crucial for lung development. This study reveals FGF signaling regulates WNT-beta-Catenin, essential for lung mesenchyme growth and epithelial branching.
Area of Science:
- Developmental biology
- Cell signaling
- Molecular biology
Background:
- Lung mesenchyme shapes lung development, including branching and vasculature.
- Fibroblast growth factor 9 (FGF9) is key for lung mesenchymal growth, but its upstream regulators and downstream targets are unclear.
Purpose of the Study:
- To investigate the regulatory network linking FGF and WNT signaling in lung mesenchyme.
- To determine the role of WNT-beta-Catenin signaling in lung development.
Main Methods:
- Conditional inactivation of beta-Catenin in lung mesenchyme.
- Analysis of cell cycle regulation and FGF responsiveness.
Main Results:
- Mesenchymal FGF signaling regulates beta-Catenin mediated WNT signaling.
- Mesenchymal WNT-beta-Catenin signaling is essential for lung development.
- This signaling pathway controls cell cycle progression (G1 to S transition) and FGF responsiveness.
Conclusions:
- FGF and WNT signaling pathways cooperate to drive mesenchymal growth.
- These pathways coordinate epithelial morphogenesis during lung pseudoglandular development.
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