Related Experiment Video
Updated: May 20, 2025
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A Human Corneal Organ Culture Model of Descemet's Stripping Only with Accelerated Healing Stimulated by Engineered Fibroblast Growth Factor 1
Published on: July 22, 2022
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Fibroblast-derived osteoglycin promotes epithelial cell repair
Luke van der Koog1,2, Manon E Woest3, Iris C Gorter3
1Department of Molecular Pharmacology, Groningen Research Institute of Pharmacy, University of Groningen, Groningen, The Netherlands.
NPJ Regenerative Medicine
|March 26, 2025
Summary
Osteoglycin (OGN) promotes lung epithelial repair by enhancing alveolar progenitor differentiation and communication. An OGN fragment shows therapeutic potential for chronic obstructive pulmonary disease (COPD).
Area of Science:
- Pulmonary Medicine
- Regenerative Biology
- Drug Discovery
Background:
- Chronic obstructive pulmonary disease (COPD) involves defective epithelial repair.
- Mesenchymal niche factors regulate epithelial stem cell activation and are potential therapeutic targets.
Purpose of the Study:
- To identify novel drug targets within the lung fibroblast secretome for improving epithelial repair.
- To investigate the therapeutic potential of osteoglycin (OGN) and its fragments in COPD.
Main Methods:
- Proteomics-guided drug discovery strategy.
- Lung organoid assays and transcriptomic analyses.
- In vitro and in vivo models of lung injury and COPD.
Main Results:
- Osteoglycin (OGN) was identified as a key regenerative ligand promoting alveolar progenitor differentiation, ROS detoxification, and fibroblast-epithelial crosstalk.
- OGN expression was reduced in COPD patients and smoke-exposed mice.
- A specific OGN fragment (leucine-rich repeat regions 4-7) replicated OGN's regenerative effects and improved lung function in vivo.
Conclusions:
- OGN is a critical secreted protein for alveolar epithelial repair.
- The active fragment of OGN represents a promising therapeutic candidate for COPD treatment.
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