Selected article for: "activation profile and acute sars respiratory syndrome"
Author: Chu, Hin; Chan, Jasper Fuk-Woo; Wang, Yixin; Yuen, Terrence Tsz-Tai; Chai, Yue; Hou, Yuxin; Shuai, Huiping; Yang, Dong; Hu, Binjie; Huang, Xiner; Zhang, Xi; Cai, Jian-Piao; Zhou, Jie; Yuan, Shuofeng; Kok, Kin-Hang; To, Kelvin Kai-Wang; Chan, Ivy Hau-Yee; Zhang, Anna Jinxia; Sit, Ko-Yung; Au, Wing-Kuk; Yuen, Kwok-Yung
Title: Comparative replication and immune activation profiles of SARS-CoV-2 and SARS-CoV in human lungs: an ex vivo study with implications for the pathogenesis of COVID-19
  • Cord-id: 87fruomm
  • Document date: 2020_4_9
    • ID: 87fruomm
    Snippet: BACKGROUND: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is an emerging coronavirus that has resulted in nearly 1,000,000 laboratory-confirmed cases including over 50,000 deaths. Although SARS-CoV-2 and SARS-CoV share a number of common clinical manifestations, SARS-CoV-2 appears to be highly efficient in person-to-person transmission and frequently cause asymptomatic infections. However, the underlying mechanism that confers these viral characteristics on high transmissibility a
    Document: BACKGROUND: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is an emerging coronavirus that has resulted in nearly 1,000,000 laboratory-confirmed cases including over 50,000 deaths. Although SARS-CoV-2 and SARS-CoV share a number of common clinical manifestations, SARS-CoV-2 appears to be highly efficient in person-to-person transmission and frequently cause asymptomatic infections. However, the underlying mechanism that confers these viral characteristics on high transmissibility and asymptomatic infection remain incompletely understood. METHODS: We comprehensively investigated the replication, cell tropism, and immune activation profile of SARS-CoV-2 infection in human lung tissues with SARS-CoV included as a comparison. RESULTS: SARS-CoV-2 infected and replicated in human lung tissues more efficiently than that of SARS-CoV. Within the 48-hour interval, SARS-CoV-2 generated 3.20 folds more infectious virus particles than that of SARS-CoV from the infected lung tissues (P<0.024). SARS-CoV-2 and SARS-CoV were similar in cell tropism, with both targeting types I and II pneumocytes, and alveolar macrophages. Importantly, despite the more efficient virus replication, SARS-CoV-2 did not significantly induce types I, II, or III interferons in the infected human lung tissues. In addition, while SARS-CoV infection upregulated the expression of 11 out of 13 (84.62%) representative pro-inflammatory cytokines/chemokines, SARS-CoV-2 infection only upregulated 5 of these 13 (38.46%) key inflammatory mediators despite replicating more efficiently. CONCLUSIONS: Our study provided the first quantitative data on the comparative replication capacity and immune activation profile of SARS-CoV-2 and SARS-CoV infection in human lung tissues. Our results provided important insights on the pathogenesis, high transmissibility, and asymptomatic infection of SARS-CoV-2.

    Search related documents:
    Co phrase search for related documents
    • accession number and lung tissue: 1
    • acute respiratory distress syndrome and lung adenocarcinoma: 1, 2, 3
    • acute respiratory distress syndrome and lung biopsy: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
    • acute respiratory distress syndrome and lung imaging: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25
    • acute respiratory distress syndrome and lung model: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25
    • acute respiratory distress syndrome and lung model system: 1, 2
    • acute respiratory distress syndrome and lung tissue: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25
    • acute respiratory distress syndrome and lung tissue sars cov: 1, 2, 3, 4, 5, 6, 7, 8, 9
    • acute respiratory distress syndrome severe pneumonia and lung imaging: 1, 2, 3
    • acute respiratory distress syndrome severe pneumonia and lung model: 1
    • acute respiratory distress syndrome severe pneumonia and lung tissue: 1, 2, 3, 4
    • lobectomy wedge resection and lung adenocarcinoma: 1