Autor: |
Bo Liu, Ying Yin, Yuxiao Liu, Tiantian Wang, Peng Sun, Yangqin Ou, Xin Gong, Xuchen Hou, Jun Zhang, Hongguang Ren, Shiqiang Luo, Qian Ke, Yongming Yao, Junjie Xu, Jun Wu |
Jazyk: |
angličtina |
Rok vydání: |
2022 |
Předmět: |
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Zdroj: |
Engineering, Vol 13, Iss , Pp 107-115 (2022) |
Druh dokumentu: |
article |
ISSN: |
2095-8099 |
DOI: |
10.1016/j.eng.2021.06.012 |
Popis: |
In 2020 and 2021, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a novel coronavirus, caused a global pandemic. Vaccines are expected to reduce the pressure of prevention and control, and have become the most effective strategy to solve the pandemic crisis. SARS-CoV-2 infects the host by binding to the cellular receptor angiotensin converting enzyme 2 (ACE2) via the receptor-binding domain (RBD) of the surface spike (S) glycoprotein. In this study, a candidate vaccine based on a RBD recombinant subunit was prepared by means of a novel glycoengineered yeast Pichia pastoris expression system with characteristics of glycosylation modification similar to those of mammalian cells. The candidate vaccine effectively stimulated mice to produce high-titer anti-RBD specific antibody. Furthermore, the specific antibody titer and virus-neutralizing antibody (NAb) titer induced by the vaccine were increased significantly by the combination of the double adjuvants Al(OH)3 and CpG. Our results showed that the virus-NAb lasted for more than six months in mice. To summarize, we have obtained a SARS-CoV-2 vaccine based on the RBD of the S glycoprotein expressed in glycoengineered Pichia pastoris, which stimulates neutralizing and protective antibody responses. A technical route for fucose-free complex-type N-glycosylation modified recombinant subunit vaccine preparation has been established. |
Databáze: |
Directory of Open Access Journals |
Externí odkaz: |
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