Establishing An Epithelial-Endothelial Co-Culture Lung-on-a-chip For Investigation In Healthy and COPD Conditions

Area of Science:

• Respiratory physiology and disease modeling
• Biomimetic microfluidic systems
• Translational research platforms

Background:

• Static in vitro and animal models have limitations in recapitulating the complex airway-vascular interface.
• Understanding intercellular mechanisms in chronic obstructive pulmonary disease (COPD) requires physiologically relevant models.
• Dynamic co-culture systems are needed to mimic lung tissue microenvironments.

Purpose of the Study:

• To develop and validate two dynamic lung-on-a-chip co-culture models.
• To enable direct comparison of healthy and COPD lung airway-vascular interfaces.
• To support preclinical studies for inhaled drugs, pathogen exposure, and respiratory disease research.

Main Methods:

• Incorporation of primary human airway epithelial and pulmonary microvascular endothelial cells.
• Establishment of air-liquid interface (ALI) and continuous perfusion culture conditions.
• Assessment of barrier function, epithelial differentiation, and cell-specific RNA extraction.

Main Results:

• Both healthy and COPD lung-on-a-chip models demonstrated robust barrier integrity and epithelial differentiation.
• The COPD model recapitulated disease-specific features like enhanced mucus production.
• High-quality, compartment-specific RNA was successfully extracted for molecular analysis.

Conclusions:

• The developed lung-on-a-chip models offer a physiologically relevant platform for studying respiratory diseases.
• Patient-derived cells in these models preserve individual pathological characteristics for mechanistic studies.
• This versatile system supports comparative studies, therapeutic testing, and drug discovery in respiratory research.