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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/14317


    Title: Humoral, cellular and cytokine immune responses against SARS-CoV-2 variants in COVID-19 convalescent and confirmed patients with different disease severities
    Authors: Chiu, CH;Chang, YH;Chang, FY;Hung, YJ;Liao, CL;Chiu, KC;Tsai, PL;Chang, TW;Yen, LC
    Contributors: National Mosquito-Borne Diseases Control Research Center
    Abstract: OBJECTIVES: To assess humoral and cellular immune responses against SARS-CoV-2 variants in COVID-19 convalescent and confirmed patients, to explore the correlation between disease severity, humoral immunity, and cytokines/chemokines in confirmed patients, and to evaluate the ADE risk of SARS-CoV-2. METHODS: Anti-RBD IgG were quantified using an ELISA. Neutralization potency was measured using pseudovirus and real virus. Cellular immunity was measured using ELISpot. Cytokine/chemokine levels were detected using multiplex immunoassays. In vitro ADE assays were performed using Raji cells. RESULTS: One-month alpha convalescents exhibited spike-specific antibodies and T cells for alpha and delta variants. Notably, the RBD-specific IgG towards the delta variant decreased by 2.5-fold compared to the alpha variant. Besides, serum from individuals recently experienced COVID-19 showed suboptimal neutralizing activity against the delta and omicron variants. Humoral immune response, IL-6, IP-10 and MCP-1 levels were greater in patients with severe disease. Moreover, neither SARS-CoV-1 nor SARS-CoV-2 convalescent sera significantly enhanced SARS-CoV-2 pseudovirus infection. CONCLUSIONS: Significant resistance of the delta and omicron variants to the humoral immune response generated by individuals who recently experienced COVID-19. Furthermore, there was a significant correlation among disease severity, humoral immune response, and specific cytokines/chemokine levels. No evident ADE was observed for SARS-CoV-2.
    Date: 2022-05-17
    Relation: Frontiers in Cellular and Infection Microbiology. 2022 May 17;12:Article number 862656.
    Link to: http://dx.doi.org/10.3389/fcimb.2022.862656
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=2235-2988&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000805104200001
    Cited Times(Scopus): https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85131337722
    Appears in Collections:[廖經倫] 期刊論文

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