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Phenotyping Mouse Pulmonary Function In Vivo with the Lung Diffusing Capacity
Published on: January 6, 2015
Molecular biomarkers for quantitative and discrete COPD phenotypes.
Soumyaroop Bhattacharya1, Sorachai Srisuma, Dawn L Demeo
1Division of Neonatology and Center for Pediatric Biomedical Research, Department of Pediatrics, University of Rochester, Box 703, 601 Elmwood Avenue, Rochester, NY 14642, USA.
American Journal of Respiratory Cell and Molecular Biology
|October 14, 2008
Summary
Researchers identified gene expression biomarkers for chronic obstructive pulmonary disease (COPD). These biomarkers accurately predict disease in new patient data, aiding diagnosis and understanding of this inflammatory lung disorder.
Area of Science:
- Pulmonary Medicine
- Genomics
- Biomarker Discovery
Background:
- Chronic obstructive pulmonary disease (COPD) is an inflammatory lung condition with poorly understood causes.
- Identifying reliable biomarkers is crucial for early diagnosis, disease subtyping, and assessing treatment effectiveness.
Purpose of the Study:
- To discover gene expression biomarkers for chronic obstructive pulmonary disease (COPD).
- To validate these biomarkers in an independent patient cohort.
Main Methods:
- Gene expression profiling of lung tissue from 56 subjects using Affymetrix U133 Plus 2.0 arrays.
- Analysis of differential gene expression between COPD cases and controls.
- Correlation of gene expression with quantitative measures of airflow obstruction (e.g., FEV1%predicted).
- Validation of identified biomarkers in an independent dataset of severe emphysema patients.
Main Results:
- A set of 65 discrete gene expression biomarkers was identified by comparing cases and controls.
- 220 gene expression biomarkers were found to correlate with quantitative measures of airflow obstruction.
- Biomarker genes were significantly enriched in functions related to DNA binding and transcriptional regulation.
- The identified biomarkers predicted COPD in an independent dataset with 97% accuracy.
Conclusions:
- The study identified novel gene expression biomarkers for COPD.
- These biomarkers offer potential for improved diagnosis and understanding of COPD pathogenesis.
- This research presents the first validated gene expression biomarker for COPD in an independent dataset.
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