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논문 기본 정보

자료유형
학술저널
저자정보
Zhou Yong-Fei (National Engineering Laboratory for AIDS Vaccine School of Life Sciences Jilin University Changchun) Nie Jiao-Jiao (National Engineering Laboratory for AIDS Vaccine School of Life Sciences Jilin University Changchun) Shi Chao (National Engineering Laboratory for AIDS Vaccine School of Life Sciences Jilin University Changchun) Ning Ke (National Engineering Laboratory for AIDS Vaccine School of Life Sciences Jilin University Changchun) Cao Yu-Feng (Immune-Path Biotechnology (Suzhou) Co. Ltd. Suzhou 215000 P.R. China) Xie Yanbo (Jilin Provincial Key Laboratory of Agricultural Biotechnology Jilin Academy of Agricultural Science) Xiang Hongyu (National Engineering Laboratory for AIDS Vaccine School of Life Sciences Jilin University Changchun) Xie Qiuhong (National Engineering Laboratory for AIDS Vaccine School of Life Sciences Jilin University Changchun)
저널정보
한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제32권 제10호
발행연도
2022.10
수록면
1,335 - 1,343 (9page)
DOI
10.4014/jmb.2205.05023

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COVID-19 is an emerging disease that poses a severe threat to global public health. As such, there is an urgent demand for vaccines against SARS-CoV-2, the virus that causes COVID-19. Here, we describe a virus-like nanoparticle candidate vaccine against SARS-CoV-2 produced by an E. coli expression system. The fusion protein of a truncated ORF2-encoded protein of aa 439~608 (p170) from hepatitis E virus CCJD-517 and the receptor-binding domain of the spike protein from SARSCoV- 2 were expressed, purified and characterized. The antigenicity and immunogenicity of p170- RBD were evaluated in vitro and in Kunming mice. Our investigation revealed that p170-RBD selfassembled into approximately 24 nm virus-like particles, which could bind to serum from vaccinated people (p < 0.001) and receptors on cells. Immunization with p170-RBD induced the titer of IgG antibody vaccine increased from 14 days post-immunization and was significantly enhanced after a booster immunization at 28 dpi, ultimately reaching a peak level on 42 dpi with a titer of 4.97 log10. Pseudovirus neutralization tests showed that the candidate vaccine induced a strong neutralizing antibody response in mice. In this research, we demonstrated that p170-RBD possesses strong antigenicity and immunogenicity and could be a potential candidate for use in future SARS-CoV-2 vaccine development.

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