Back to Search
Start Over
A Shared Pattern of β-Catenin Activation in Bronchopulmonary Dysplasia and Idiopathic Pulmonary Fibrosis
- Source :
- The American journal of pathology. 188(4)
- Publication Year :
- 2017
-
Abstract
- Wnt/β-catenin signaling is necessary for normal lung development, and abnormal Wnt signaling contributes to the pathogenesis of both bronchopulmonary dysplasia (BPD) and idiopathic pulmonary fibrosis (IPF), fibrotic lung diseases that occur during infancy and aging, respectively. Using a library of human normal and diseased human lung samples, we identified a distinct signature of nuclear accumulation of β-catenin phosphorylated at tyrosine 489 and epithelial cell cytosolic localization of β-catenin phosphorylated at tyrosine 654 in early normal lung development and fibrotic lung diseases BPD and IPF. Furthermore, this signature was recapitulated in murine models of BPD and IPF. Image analysis of immunofluorescence colocalization demonstrated a consistent pattern of elevated nuclear phosphorylated β-catenin in the lung epithelium and surrounding mesenchyme in BPD and IPF, closely resembling the pattern observed in 18-week fetal lung. Nuclear β-catenin phosphorylated at tyrosine 489 associated with an increased expression of Wnt target gene AXIN2, suggesting that the observed β-catenin signature is of functional significance during normal development and injury repair. The association of specific modifications of β-catenin during normal lung development and again in response to lung injury supports the widely held concept that repair of lung injury involves the recapitulation of developmental programs. Furthermore, these observations suggest that β-catenin phosphorylation has potential as a therapeutic target for the treatment and prevention of both BPD and IPF.
- Subjects :
- 0301 basic medicine
Adult
Mesenchyme
Lung injury
Article
Pathology and Forensic Medicine
03 medical and health sciences
Idiopathic pulmonary fibrosis
Fetus
Axin Protein
Pregnancy
AXIN2
Medicine
Animals
Humans
Phosphorylation
Lung
beta Catenin
Bronchopulmonary Dysplasia
Cell Nucleus
business.industry
Wnt signaling pathway
Epithelial Cells
respiratory system
medicine.disease
Idiopathic Pulmonary Fibrosis
respiratory tract diseases
Mice, Inbred C57BL
030104 developmental biology
medicine.anatomical_structure
Bronchopulmonary dysplasia
Animals, Newborn
A549 Cells
Catenin
Pregnancy Trimester, Second
Cancer research
Tyrosine
Female
business
Protein Processing, Post-Translational
Signal Transduction
Subjects
Details
- ISSN :
- 15252191
- Volume :
- 188
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- The American journal of pathology
- Accession number :
- edsair.doi.dedup.....a262765f877a90be7aeaa3a7f6a38095