Tissue-resident CD8<SUP>+</SUP> T cells drive age-associated chronic lung sequelae after viral pneumonia
- Authors
- Goplen, Nick P.; Wu, Yue; Son, Young Min; Li, Chaofan; Wang, Zheng; Cheon, In Su; Jiang, Li; Zhu, Bibo; Ayasoufi, Katayoun; Chini, Eduardo N.; Johnson, Aaron J.; Vassallo, Robert; Limper, Andrew H.; Zhang, Nu; Sun, Jie
- Issue Date
- Nov-2020
- Publisher
- AMER ASSOC ADVANCEMENT SCIENCE
- Citation
- SCIENCE IMMUNOLOGY, v.5, no.53
- Journal Title
- SCIENCE IMMUNOLOGY
- Volume
- 5
- Number
- 53
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/72083
- DOI
- 10.1126/sciimmunol.abc4557
- ISSN
- 2470-9468
- Abstract
- Lower respiratory viral infections, such as influenza virus and severe acute respiratory syndrome coronavirus 2 infections, often cause severe viral pneumonia in aged individuals. Here, we report that influenza viral pneumonia leads to chronic nonresolving lung pathology and exacerbated accumulation of CD8(+) tissue-resident memory T cells (T-RM) in the respiratory tract of aged hosts. T-RM cell accumulation relies on elevated TGF-beta present in aged tissues. Further, we show that T-RM cells isolated from aged lungs lack a subpopulation characterized by expression of molecules involved in TCR signaling and effector function. Consequently, T-RM cells from aged lungs were insufficient to provide heterologous protective immunity. The depletion of CD8(+) T-RM cells dampens persistent chronic lung inflammation and ameliorates tissue fibrosis in aged, but not young, animals. Collectively, our data demonstrate that age-associated T-RM cell malfunction supports chronic lung inflammatory and fibrotic sequelae after viral pneumonia.
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Collections - College of Biotechnology & Natural Resource > Department of Systems Biotechnology > 1. Journal Articles
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