Integrated Transcriptomic Analysis Reveals Shared Molecular Signatures Between Asthma and Chronic Obstructive...

Area of Science:

• Respiratory Medicine
• Systems Biology
• Genomics

Background:

• Asthma and chronic obstructive pulmonary disease (COPD) are common respiratory diseases characterized by chronic inflammation.
• These conditions share overlapping pathological features, necessitating research into common underlying mechanisms.
• Asthma-COPD overlap syndrome presents unique challenges, highlighting the need for targeted therapeutic strategies.

Purpose of the Study:

• To identify key molecular contributors and biological pathways common to both asthma and COPD.
• To discover potential therapeutic targets for patients with asthma-COPD overlap syndrome.
• To leverage integrated transcriptomics and systems biology approaches for novel insights.

Main Methods:

• Analysis of eight transcriptomics datasets (four asthma, four COPD) from blood and airway epithelial cells.
• Construction of shared protein-protein interaction (PPI) and miRNA-mRNA regulatory networks.
• Identification of hub genes and functional enrichment analysis of shared networks.

Main Results:

• Shared PPI networks revealed key hub genes: ribosomal proteins and IL-1β in blood, and CTNNB1 in airway epithelial cells.
• The miR-30 family (miR-30a-3p, miR-30e-3p) emerged as multi-target regulators for hub genes in both cell types.
• Functional analysis indicated significant enrichment of infection-related pathways in shared networks.

Conclusions:

• IL-1β signaling is a potential molecular link between asthma and COPD, identified as a blood hub gene.
• Downregulated CTNNB1 is a key gene in airway epithelial shared networks, suggesting its role in disease pathogenesis.
• The study provides a systems biology framework for understanding commonalities and developing targeted therapies for respiratory diseases.