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Organotypic Tissue Model Systems for Investigating Host-Pathogen Interactions In Vitro
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Where We Stand: Lung Organotypic Living Systems That Emulate Human-Relevant Host-Environment/Pathogen Interactions
Rocio J Jimenez-Valdes1, Uryan I Can1, Brian F Niemeyer1
1Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States.
Frontiers in Bioengineering and Biotechnology
|September 9, 2020
Summary
3D lung models offer a better way to study lung diseases like COPD and infections. These advanced models mimic human lungs, improving research on environmental exposures and pathogens.
Area of Science:
- Pulmonary medicine
- Toxicology
- Infectious diseases
Background:
- Chronic obstructive pulmonary disease (COPD) and lower respiratory tract infections (LRTIs) are major global health burdens.
- Cigarette smoking and airborne pathogens are key risk factors for these lung disorders.
- Existing animal models have limitations in accurately reflecting human lung conditions.
Purpose of the Study:
- To review advancements in 3D human lung culture systems.
- To highlight the utility of these models in studying host-environment and host-pathogen interactions.
- To discuss their application in evaluating environmental exposures, pathogens, and therapeutics.
Main Methods:
- Development of complex 3D culture systems that replicate human lung microarchitecture.
- Utilizing these 3D models to simulate lung pathophysiology.
- Applying these platforms for controlled exposure studies.
Main Results:
- 3D lung models successfully emulate human lung structure and function.
- These systems provide a more accurate platform for studying lung disease mechanisms.
- Demonstrated utility in assessing responses to environmental factors and pathogens.
Conclusions:
- Advanced 3D lung culture systems represent a significant improvement over traditional animal models.
- These models are crucial for understanding lung disease pathogenesis and developing effective treatments.
- They offer a promising avenue for translational research in pulmonary medicine.

