Back to Search
Start Over
LIGHT of pulmonary NKT cells annihilates tissue protective alveolar macrophages in augmenting severe influenza pneumonia
- Source :
- Science Bulletin. 66:2124-2134
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- CD1d-restricted natural killer T (NKT) cells are innate-like T lymphocytes with protective or pathogenic roles in the development of influenza pneumonia. Here, we show that lung-infiltrated and activated NKT cells are the major cellular source of LIGHT/TNFSF14, which determines the severity of pulmonary pneumonia by highly deteriorative influenza A virus (IAV) infection. Compared to wild-type mice, LIGHT−/− mice exhibit much lower morbidity and mortality to IAV, due to alleviated lung damage and reduced apoptosis of alveolar macrophages (AMs). LIGHT preferentially promotes cell death of lymphotoxin β receptors positive (LTβR+) AMs but not herpesvirus entry mediator positive (HVEM+) AMs. Therefore, these results suggest that NKT-derived LIGHT augments cell death of the tissue protective AMs in exacerbating lung pathology and susceptibility to fatal influenza infection. Suppression of LIGHT signaling might be a viable option in the treatment of influenza-associated acute respiratory distress syndrome.
- Subjects :
- Herpesvirus entry mediator
Programmed cell death
Multidisciplinary
Lung
business.industry
010502 geochemistry & geophysics
Severe influenza
Natural killer T cell
medicine.disease
medicine.disease_cause
01 natural sciences
Pneumonia
medicine.anatomical_structure
Apoptosis
Immunology
medicine
Influenza A virus
business
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 20959273
- Volume :
- 66
- Database :
- OpenAIRE
- Journal :
- Science Bulletin
- Accession number :
- edsair.doi...........7e1792bdbc9e4d0a8131abfc302ead50