Cited by 85Autophagy in Disease and TherapyEndoplasmic Reticulum Stress and DiseaseAsthma and respiratory diseases

Deficiency of autophagy protein Map1-LC3b mediates IL-17-dependent lung pathology during respiratory viral infection via ER stress-associated IL-1.

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Reed, M, Morris, S H, Owczarczyk, A B, Lukacs, N W·2015·Mucosal Immunology

Abstract

While recent studies suggest that interleukin (IL)-1β production is modulated by macroautophagy or sensors of endoplasmic reticulum (ER) stress upon pro-inflammatory insult, autophagy and IL-1β production during viral infection has not been fully investigated. This was addressed using respiratory syncytial virus (RSV), which is associated with lung immunopathology, IL-1, and IL-17a secretion in severely infected patients. Mice deficient in the autophagy-associated protein Map1-LC3b (LC3b(-/-)) developed increased IL-17a-dependent lung pathology upon infection. RSV-infected LC3b(-/-) dendritic cells (DCs) fail to upregulate autophagosome formation, secrete IL-1β and IL-6, and elicit IL-17a production from CD4+ T cells. Bone marrow chimeras revealed that both structural and hematopoietic LC3b deficiency contribute to the development of IL-17a-dependent lung pathology in vivo. Further investigation revealed airway epithelium as the primary source of IL-1β during infection, whereas inhibition of the ER-stress sensor inositol-requiring protein-1 in primary airway epithelial cells reduced IL-1β production identifying a primary ER stress pathway. Finally, blockade of IL-1 receptor signaling in RSV-infected LC3b(-/-) mice abolished IL-17a-dependent lung pathology. These findings provide novel mechanistic insight into the contribution of autophagy- and ER stress-dependent cytokine production that initiate and maintain aberrant Th17 responses, while identifying IL-1 as a potential therapeutic target in the treatment of severe respiratory viral infections.

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Authors
Reed, M., Morris, S. H., Owczarczyk, A. B., & Lukacs, N. W.
Affiliations
University of Michigan (US)
Corresponding author
Lukacs, N W
Venue
Mucosal Immunology
Publisher
Elsevier BV
Published
2015-09
Volume
8
Issue
5
Pages
1118-1130
ISSN
1933-0219 (ISSN-L)
OpenAlex
W2096326560
Cited by
85
References
51
Citations by year
2026: 3 · 2025: 4 · 2024: 5 · 2023: 7 · 2022: 8 · 2021: 11 · 2020: 11 · 2019: 3 · 2018: 10 · 2017: 11 · 2016: 6 · 2015: 5 · 2014: 1
FWCI
8.36
Type
journal article
Language
en
Open access
Locations
  • Mucosal Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • University of Michigan
  • National Institutes of Health (5t32ai007413-32)
  • National Heart, Lung, and Blood Institute (HL114858, R01HL114858)
  • National Institute of General Medical Sciences (T32GM007863)
  • National Institute of Allergy and Infectious Diseases (T32-AI-007413)
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Endoplasmic Reticulum Stress and Disease
  • Health Sciences › Medicine › Physiology › Asthma and respiratory diseases
Keywords
autophagy, LC3B, endoplasmic reticulum stress, IL-1β, IL-17A, respiratory syncytial virus, respiratory viral infections, lung immunopathology, dendritic cells, airway epithelium, Th17 cells, IL-1 signaling, autophagosome formation, interleukin-6
MeSH terms
Animals, Dendritic Cells, Lung Diseases, Microtubule-Associated Proteins, Respiratory Syncytial Viruses, CD4-Positive T-Lymphocytes, Interleukin-6, Mice, Knockout, Respiratory Syncytial Virus Infections, Interleukin-17, Mice, Interleukin-1beta, Th17 Cells, Endoplasmic Reticulum Stress

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