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The precise mechanisms by which β-catenin controls morphogenesis and cell differentiation remain largely unknown. Using embryonic lung development as a model, we deleted exon 3 of β-catenin via Nkx2.1-cre in the Catnb[+/lox(ex3)] mice and studied its impact on epithelial morphogenesis. Robust selective accumulation of truncated, stabilized β-catenin was found in Nkx2.1-cre;Catnb[+/lox(ex3)] lungs...
The role of WNT signaling and its interactions with other morphogenetic pathways were investigated during lung development. Previously, we showed that targeted disruption of Wnt5a results in over-branching of the epithelium and thickening of the interstitium in embryonic lungs. In this study, we generated and characterized transgenic mice with lung-specific over-expression of Wnt5a from the SpC promoter...
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