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Liu T, Liu S, Rui X, Cao Y, Hecker J, Guo F, Zhang Y, Gong L, Zhou Y, Yu Y, Krishnamoorthyni N, Bates S, Chun S, Boyer N, Xu S, Park JA, Perrella MA, Levy BD, Weiss ST, Mou H, Raby BA, Zhou X. Gasdermin B, an asthma-susceptibility gene, promotes MAVS-TBK1 signaling and airway inflammation. Eur Respir J 2024:2301232. [PMID: 38514093 DOI: 10.1183/13993003.01232-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 12/30/2023] [Indexed: 03/23/2024]
Abstract
RATIONALE Respiratory virus-induced inflammation is the leading cause of asthma exacerbation, frequently accompanied by induction of IFN-stimulated genes (ISGs). How asthma genetic susceptible genes modulate cellular response upon viral infection through fine-tuning ISGs induction and subsequent airway inflammation in genetically susceptible asthmatics remains largely unknown. OBJECTIVES To decipher the functions of GSDMB in respiratory virus-induced lung inflammation. METHODS In two independent cohorts, we analyzed expression correlation between GSDMB and ISGs. In human bronchial epithelial cell line or primary cells, we generated GSDMB-overexpressing and -deficient cells. A series of qPCR, ELISA and co-immunoprecipitation assays were performed to determine the function and mechanism of GSDMB for ISGs induction. We also generated a novel transgenic mouse line with inducible expression of human unique GSDMB gene in airway epithelial cells and applied respiratory syncytial virus (RSV) infection to determine the role of GSDMB on RSV-induced lung inflammation in vivo. MEASUREMENTS AND MAIN RESULTS Gasdermin B encoded by GSDMB, one of the most significant asthma-susceptible genes at 17q21, acts as a novel RNA sensor, promoting MAVS-TBK1 signaling and subsequent inflammation. In airway epithelium, GSDMB is induced by respiratory viral infections. Expression of GSDMB and ISGs significantly correlated in respiratory epithelium from two independent asthma cohorts. Notably, inducible expression of human GSDMB gene in mouse airway epithelium leads to enhanced ISGs induction, increased airway inflammation with mucus hyper-secretion upon RSV infection. CONCLUSIONS GSDMB promotes ISGs expression and airway inflammation upon respiratory virus infection, thereby conferring asthma risk in risk allele carriers.
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Affiliation(s)
- Tao Liu
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Siqi Liu
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
- These authors contributed equally
| | - Xianliang Rui
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
- These authors contributed equally
| | - Ye Cao
- Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Julian Hecker
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Feng Guo
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Yihan Zhang
- The Mucosal Immunology and Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Lu Gong
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Yihan Zhou
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Yuzhen Yu
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Nandini Krishnamoorthyni
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Samuel Bates
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Sung Chun
- Division of Pulmonary Medicine, Department of Pediatrics, Boston Children's Hospital and Harvard Medical School, Boston, MA
| | - Nathan Boyer
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Shuang Xu
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Jin-Ah Park
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Mark A Perrella
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Bruce D Levy
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Scott T Weiss
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Hongmei Mou
- The Mucosal Immunology and Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Benjamin A Raby
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
- Division of Pulmonary Medicine, Department of Pediatrics, Boston Children's Hospital and Harvard Medical School, Boston, MA
- These authors jointly conceptualized and supervised this work
| | - Xiaobo Zhou
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
- These authors jointly conceptualized and supervised this work
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