Related Experiment Video
Updated: May 4, 2026
Contact-Free Co-Culture Model for the Study of Innate Immune Cell Activation During Respiratory Virus Infection
Published on: February 28, 2021
Network analysis reveals age- and virus-specific circuits in nasal epithelial cells of extremely premature infants
Lukas Wisgrill1,2, Anke Martens1, Rajmund Kasbauer1
1Division of Neonatology, Pediatric Intensive Care and Neuropediatrics, Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria.
Insights
Nasal epithelial cells in infants show distinct antiviral responses compared to adults, crucial for understanding respiratory virus infections in young children and informing immune strategies.
Area of Science:
- Immunology
- Cell Biology
- Virology
Background:
- Viral respiratory infections pose significant risks to young children, especially premature infants, leading to high hospitalization rates.
- Nasal epithelial cells are key to innate immunity against respiratory pathogens and understanding their function is vital.
Purpose of the Study:
- To investigate age-dependent developmental differences in nasal epithelial cells.
- To analyze antiviral responses to influenza A and respiratory syncytial virus in a cellular model.
Main Methods:
- Utilized a trans-well pseudostratified nasal epithelial cell system.
- Employed systems biology approaches to examine cellular and molecular mechanisms.
- Conducted consensus network analysis to identify cellular-viral interactions.
Main Results:
- Neonatal and adult nasal epithelial cells exhibit different innate-receptor repertoires and developmental pathways.
- Distinct antiviral network circuits were observed between age groups.
- Identified unique and shared cellular-viral networks, highlighting virus-specific pathways.
Conclusions:
- Nasal epithelial cells play a critical role in innate antiviral immunity.
- Revealed significant age-related differences in nasal epithelial cell immunity to respiratory viruses.
- Provides insights into mechanisms underlying infant susceptibility to viral infections.
Background And Objectives:
Viral respiratory infections significantly affect young children, particularly extremely premature infants, resulting in high hospitalization rates and increased health-care burdens. Nasal epithelial cells, the primary defense against respiratory infections, are vital for understanding nasal immune responses and serve as a promising target for uncovering underlying molecular and cellular mechanisms.
Methods:
Using a trans-well pseudostratified nasal epithelial cell system, we examined age-dependent developmental differences and antiviral responses to influenza A and respiratory syncytial virus through systems biology approaches.
Results:
Our studies revealed differences in innate-receptor repertoires, distinct developmental pathways, and differentially connected antiviral network circuits between neonatal and adult nasal epithelial cells. Consensus network analysis identified unique and shared cellular-viral networks, emphasizing highly relevant virus-specific pathways, independent of viral replication kinetics.
Conclusion:
This research highlights the importance of nasal epithelial cells in innate antiviral immune responses and offers crucial insights that allow for a deeper understanding of age-related differences in nasal epithelial cell immunity following respiratory virus infections.
