Wnt Signaling in Lung Development and Repair
Author Information
Author(s): Denise Al Alam, Melissa Green, Reza Tabatabai, Sara Parsa, Soula Danopoulos, Frederic G. Sala, Jonathan Branch, Elie El Agha, Caterina Tiozzo, Robert Voswinckel, Edwin C. Jesudason, David Warburton, Saverio Bellusci
Primary Institution: Developmental Biology and Regenerative Medicine Program, Saban Research Institute of Children's Hospital Los Angeles
Hypothesis
The study investigates whether different Wnt reporter mice convey the same information about canonical Wnt signaling during lung development and repair.
Conclusion
The study concludes that Axin2LacZ is the most reliable Wnt reporter line for detecting Wnt signaling in lung epithelium and mesenchyme.
Supporting Evidence
- TOPGAL and BATGAL lines show Wnt signaling well in early lung epithelium.
- BATGAL expression is reduced in late embryonic and adult lungs.
- Axin2LacZ expression is sustained in embryonic lung mesenchyme and epithelium.
- Both TOPGAL and Axin2LacZ are upregulated in parabronchial smooth muscle cells during repair.
Takeaway
This study looked at how different mouse models show Wnt signaling in lung development and found that one model is better for seeing how Wnt works.
Methodology
The researchers compared beta-galactosidase expression patterns in different Wnt reporter mice during lung development and after naphthalene injury.
Potential Biases
Potential bias due to the use of only female mice for naphthalene injury experiments, as they are more susceptible to this type of injury.
Limitations
The study is limited by the inherent up-regulation of endogenous Wnt signaling in Axin2LacZ mice, which may complicate interpretations.
Participant Demographics
The study used 20 adult female mice across three different Wnt reporter lines.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website