Superoxide Dismutase Prevents SARS-CoV-2-Induced Plasma Cell Apoptosis and Stabilizes Specific Antibody Induction.
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| Abstract |
The infection of coronavirus disease (COVID-19) seriously threatens human life. It is urgent to generate effective and safe specific antibodies (Abs) against the pathogenic elements of COVID-19. Mice were immunized with SARS-CoV-2 spike protein antigens: S ectodomain-1 (CoV, in short) mixed in Alum adjuvant for 2 times and boosted with CoV weekly for 6 times. A portion of mice were treated with Maotai liquor (MTL, in short) or/and heat stress (HS) together with CoV boosting. We observed that the anti-CoV Ab was successfully induced in mice that received the CoV/Alum immunization for 2 times. However, upon boosting with CoV, the CoV Ab production diminished progressively; spleen CoV Ab-producing plasma cell counts reduced, in which substantial CoV-specific Ab-producing plasma cells (sPC) were apoptotic. Apparent oxidative stress signs were observed in sPCs; the results were reproduced by exposing sPCs to CoV in the culture. The presence of MTL or/and HS prevented the CoV-induced oxidative stress in sPCs and promoted and stabilized the CoV Ab production in mice in re-exposure to CoV. In summary, CoV/Alum immunization can successfully induce CoV Ab production in mice that declines upon reexposure to CoV. Concurrent administration of MTL/HS stabilizes and promotes the CoV Ab production in mice.
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| Authors | Li-Hua Mo, Xiang-Qian Luo, Ke Ma, Jian-Bo Shao, Guo-Hao Zhang, Zhi-Gang Liu, Da-Bo Liu, Huan-Ping Zhang, Ping-Chang Yang |
| Journal | Oxidative medicine and cellular longevity (Oxid Med Cell Longev) Vol. 2022 Pg. 5397733 ( 2022) ISSN: 1942-0994 [Electronic] United States |
| PMID | 35047106 (Publication Type: Journal Article) |
| Copyright | Copyright © 2022 Li-Hua Mo et al. |
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