Engineered modular microphysiological models of the human airway clearance phenomena

Area of Science:

• Biomedical Engineering
• Respiratory Physiology
• Drug Delivery Systems

Background:

• Mucociliary clearance is vital for airway defense, removing inhaled particles and limiting drug diffusion.
• Existing in vitro models inadequately capture the combined effects of mucus barrier properties and ciliary propulsion.
• Understanding mucociliary transport is crucial for respiratory health and effective inhaled therapies.

Purpose of the Study:

• To develop a versatile in vitro model that accurately simulates mucociliary clearance in both physiological and pathological airway conditions.
• To investigate the interplay between mucus properties and artificial ciliary function in modulating transport dynamics.
• To provide a reproducible and adaptable platform for studying airway clearance mechanisms.

Main Methods:

• Development of ad hoc mucus models representing physiological and pathological states.
• Integration of magnetic artificial cilia to mimic dynamic mucus propulsion.
• Utilizing a modular design for easy modification and parameter isolation.

Main Results:

• The combined model successfully simulates mucociliary transport in both healthy and diseased airway conditions.
• The modular approach allows for the independent assessment of mucus properties and ciliary function.
• The model demonstrates high versatility and reproducibility using readily available materials.

Conclusions:

• This novel in vitro model offers a powerful tool for studying mucociliary clearance dynamics.
• The platform facilitates research into respiratory diseases and the development of inhaled therapeutics.
• The readily available materials ensure broad applicability and reproducibility across research settings.