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Interfering with extracellular matrix degradation to blunt inflammation
Philip J O'Reilly1, Amit Gaggar, J Edwin Blalock
1Division of Pulmonary and Critical Care Medicine, University of Alabama at Birmingham, THT 442, 1530 3rd Avenue South, Birmingham, AL 35294-0006, United States. poreilly@uab.edu
Current Opinion in Pharmacology
|March 19, 2008
Summary
Fragments of matrix proteins like collagen and elastin attract immune cells, potentially driving chronic obstructive pulmonary disease. Understanding these pathways offers new therapeutic targets for lung diseases.
Area of Science:
- Biochemistry
- Immunology
- Pulmonary Medicine
Background:
- Matrix proteins, including collagen and elastin, exhibit chemoattractant properties for immune cells like neutrophils and monocytes.
- Fragments of these matrix proteins are recognized for their biological activity.
- These protein fragments are implicated in the pathophysiology of lung diseases, such as chronic obstructive pulmonary disease (COPD).
Purpose of the Study:
- To explore the role of collagen and elastin fragments in the lung matrix.
- To investigate the potential involvement of these fragments in autoimmune pathways relevant to chronic lung diseases.
- To identify novel biomarkers and therapeutic targets for chronic lung diseases based on these pathways.
Main Methods:
- Elucidation of the structure of chemotactic collagen fragments.
- Demonstration of structural relatedness between collagen fragments and CXC chemokines.
- Quantification of collagen and elastin fragments in patients with chronic lung diseases.
Main Results:
- Chemotactic activity of matrix protein fragments for neutrophils and monocytes in vitro is established.
- Structural analysis revealed similarities between active collagen fragments and CXC chemokines.
- Collagen and elastin fragments were found to play a role in in vivo lung pathophysiology.
- Elevated levels of these fragments were detected in patients with chronic lung diseases, suggesting a link to autoimmune activation.
Conclusions:
- Collagen and elastin fragments are key players in the inflammatory processes of chronic lung diseases.
- The chemoattractant activity of these fragments may be mediated by structural similarities to chemokines.
- Further elucidation of these pathways is crucial for developing new biomarkers and treatments for chronic lung diseases, including COPD.
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