Can Li, Na Xiao, Wenchen Song, Alvin Hiu-Chung Lam, Feifei Liu, Xinrui Cui, Zhanhong Ye, Yanxia Chen, Peidi Ren, Jianpiao Cai, Andrew Chak-Yiu Lee, Honglin Chen, Zhihua Ou, Jasper Fuk-Woo Chan, Kwok-Yung Yuen, Hin Chu, Anna Jin-Xia Zhang
{"title":"慢性肺部炎症和CK14+基底细胞增殖诱导SARS-CoV-2感染仓鼠肺泡支气管持续扩张","authors":"Can Li, Na Xiao, Wenchen Song, Alvin Hiu-Chung Lam, Feifei Liu, Xinrui Cui, Zhanhong Ye, Yanxia Chen, Peidi Ren, Jianpiao Cai, Andrew Chak-Yiu Lee, Honglin Chen, Zhihua Ou, Jasper Fuk-Woo Chan, Kwok-Yung Yuen, Hin Chu, Anna Jin-Xia Zhang","doi":"10.1016/j.ebiom.2024.105363","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Post-acute sequalae of COVID-19 defines a wide range of ongoing symptoms and conditions long after SARS-CoV-2 infection including respiratory diseases. The histopathological changes in the lung and underlying mechanism remain elusive.</p><p><strong>Methods: </strong>We investigated lung histopathological and transcriptional changes in SARS-CoV-2-infected male hamsters at 7, 14, 42, 84 and 120dpi, and compared with A (H1N1)pdm09 infection.</p><p><strong>Findings: </strong>We demonstrated viral residue, inflammatory and fibrotic changes in lung after SARS-CoV-2 but not H1N1 infection. The most prominent histopathological lesion was multifocal alveolar-bronchiolization observed in every SARS-CoV-2 infected hamster (31/31), from 42dpi to 120dpi. Proliferating (Ki67+) CK14+ basal cells accumulated in alveoli adjacent to bronchioles at 7dpi, where they proliferated and differentiated into SCGB1A+ club cell or Tubulin+ ciliated cells forming alveolar-bronchiolization foci. Molecularly, Notch pathway significantly upregulated with intensive Notch3 and Hes1 protein expression in alveolar-bronchiolization foci at 42 and 120dpi, suggesting Notch signaling involving the persistence of alveolar-bronchiolization. This is further demonstrated by spatial transcriptomic analysis. Intriguingly, significant upregulation of some cell-growth promoting pathways and genes such as Tubb4b, Stxbp4, Grb14 and Mlf1 were spatially overlapping with bronchiolization lesion.</p><p><strong>Interpretation: </strong>Incomplete resolution of SARS-CoV-2 infection in lung with viral residue, chronic inflammatory and fibrotic damage and alveolar-bronchiolization impaired respiratory function. Aberrant activation of CK14+ basal cells during tissue regeneration led to persistent alveolar-bronchiolization due to sustained Notch signaling. This study advances our understanding of respiratory PASC, sheds light on disease management and highlights the necessity for monitoring disease progression in people with respiratory PASC.</p><p><strong>Funding: </strong>Funding is listed in the Acknowledgements section.</p>","PeriodicalId":11494,"journal":{"name":"EBioMedicine","volume":"108 ","pages":"105363"},"PeriodicalIF":9.7000,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11470415/pdf/","citationCount":"0","resultStr":"{\"title\":\"Chronic lung inflammation and CK14+ basal cell proliferation induce persistent alveolar-bronchiolization in SARS-CoV-2-infected hamsters.\",\"authors\":\"Can Li, Na Xiao, Wenchen Song, Alvin Hiu-Chung Lam, Feifei Liu, Xinrui Cui, Zhanhong Ye, Yanxia Chen, Peidi Ren, Jianpiao Cai, Andrew Chak-Yiu Lee, Honglin Chen, Zhihua Ou, Jasper Fuk-Woo Chan, Kwok-Yung Yuen, Hin Chu, Anna Jin-Xia Zhang\",\"doi\":\"10.1016/j.ebiom.2024.105363\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>Post-acute sequalae of COVID-19 defines a wide range of ongoing symptoms and conditions long after SARS-CoV-2 infection including respiratory diseases. 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Chronic lung inflammation and CK14+ basal cell proliferation induce persistent alveolar-bronchiolization in SARS-CoV-2-infected hamsters.
Background: Post-acute sequalae of COVID-19 defines a wide range of ongoing symptoms and conditions long after SARS-CoV-2 infection including respiratory diseases. The histopathological changes in the lung and underlying mechanism remain elusive.
Methods: We investigated lung histopathological and transcriptional changes in SARS-CoV-2-infected male hamsters at 7, 14, 42, 84 and 120dpi, and compared with A (H1N1)pdm09 infection.
Findings: We demonstrated viral residue, inflammatory and fibrotic changes in lung after SARS-CoV-2 but not H1N1 infection. The most prominent histopathological lesion was multifocal alveolar-bronchiolization observed in every SARS-CoV-2 infected hamster (31/31), from 42dpi to 120dpi. Proliferating (Ki67+) CK14+ basal cells accumulated in alveoli adjacent to bronchioles at 7dpi, where they proliferated and differentiated into SCGB1A+ club cell or Tubulin+ ciliated cells forming alveolar-bronchiolization foci. Molecularly, Notch pathway significantly upregulated with intensive Notch3 and Hes1 protein expression in alveolar-bronchiolization foci at 42 and 120dpi, suggesting Notch signaling involving the persistence of alveolar-bronchiolization. This is further demonstrated by spatial transcriptomic analysis. Intriguingly, significant upregulation of some cell-growth promoting pathways and genes such as Tubb4b, Stxbp4, Grb14 and Mlf1 were spatially overlapping with bronchiolization lesion.
Interpretation: Incomplete resolution of SARS-CoV-2 infection in lung with viral residue, chronic inflammatory and fibrotic damage and alveolar-bronchiolization impaired respiratory function. Aberrant activation of CK14+ basal cells during tissue regeneration led to persistent alveolar-bronchiolization due to sustained Notch signaling. This study advances our understanding of respiratory PASC, sheds light on disease management and highlights the necessity for monitoring disease progression in people with respiratory PASC.
Funding: Funding is listed in the Acknowledgements section.
EBioMedicineBiochemistry, Genetics and Molecular Biology-General Biochemistry,Genetics and Molecular Biology
CiteScore
17.70
自引率
0.90%
发文量
579
审稿时长
5 weeks
期刊介绍：
eBioMedicine is a comprehensive biomedical research journal that covers a wide range of studies that are relevant to human health. Our focus is on original research that explores the fundamental factors influencing human health and disease, including the discovery of new therapeutic targets and treatments, the identification of biomarkers and diagnostic tools, and the investigation and modification of disease pathways and mechanisms. We welcome studies from any biomedical discipline that contribute to our understanding of disease and aim to improve human health.
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