Cited by 60SARS-CoV-2 and COVID-19 ResearchAnimal Virus Infections StudiesSARS-CoV-2 detection and testing

Long-term stability and protection efficacy of the RBD-targeting COVID-19 mRNA vaccine in nonhuman primates

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Zhao, Hui, Wang, Tie-Cheng, Li, Xiao-Feng, Zhang, Na-Na, Li, Liang, Zhou, Chao, Deng, Yong-Qiang, Cao, Tian-Shu +18 more·2021·Signal Transduction and Targeted Therapy

Abstract

Messenger RNA (mRNA) vaccine technology has shown its power in preventing the ongoing COVID-19 pandemic. Two mRNA vaccines targeting the full-length S protein of SARS-CoV-2 have been authorized for emergency use. Recently, we have developed a lipid nanoparticle-encapsulated mRNA (mRNA-LNP) encoding the receptor-binding domain (RBD) of SARS-CoV-2 (termed ARCoV), which confers complete protection in mouse model. Herein, we further characterized the protection efficacy of ARCoV in nonhuman primates and the long-term stability under normal refrigerator temperature. Intramuscular immunization of two doses of ARCoV elicited robust neutralizing antibodies as well as cellular response against SARS-CoV-2 in cynomolgus macaques. More importantly, ARCoV vaccination in macaques significantly protected animals from acute lung lesions caused by SARS-CoV-2, and viral replication in lungs and secretion in nasal swabs were completely cleared in all animals immunized with low or high doses of ARCoV. No evidence of antibody-dependent enhancement of infection was observed throughout the study. Finally, extensive stability assays showed that ARCoV can be stored at 2-8 °C for at least 6 months without decrease of immunogenicity. All these promising results strongly support the ongoing clinical trial.

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  • ArCoV can be stored at room temperature for at least 1 week, as confirmed in preclinical studies.

    “The developers emphasize thermostability, as their vaccine can be stored at room temperature for at least 1 week, which was confirmed in preclinical studies.140,141”

    From COVID-19 mRNA vaccines: Platforms and current developments (2022) · cites this paper as [141]

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Authors
Zhao, H., Wang, T.-C., Li, X.-F., Zhang, N.-N., Li, L., Zhou, C., Deng, Y.-Q., Cao, T.-S., Yang, G., Li, R.-T., Huang, Y.-J., Li, Y.-G., Zhang, Y.-M., Li, F.-X., Zhou, Y.-R., Jiang, Y.-H., Lu, X.-S., Sun, S.-H., Cheng, M.-L., Gu, K.-P., Zhang, M., Ma, Q.-Q., Yang, X., Ying, B., Gao, Y.-W., & Qin, C.-F.
Affiliations
  • Academy of Military Medical Sciences (CN)
  • Beijing Proteome Research Center (CN)
  • Chinese Academy of Medical Sciences & Peking Union Medical College (CN)
Corresponding author
  • Ying, Bo
  • Qin, Cheng-Feng
Venue
Signal Transduction and Targeted Therapy
Published
2021-12-24
Volume
6
Issue
1
Pages
438-438
ISSN
2059-3635 (ISSN-L)
OpenAlex
W4200134232
Cited by
60
References
40
Citations by year
2026: 3 · 2025: 17 · 2024: 10 · 2023: 19 · 2022: 10 · 2021: 1
FWCI
3.17
Type
journal article
Language
en
Open access
Locations
  • Signal Transduction and Targeted Therapy (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Natural Science Foundation of China (82041044, 2021YFC0863300, 81 621 005, 81925025, 32130005)
  • Chinese Academy of Medical Sciences (2019-I2M-5-049)
  • National Science Fund for Distinguished Young Scholars (81925025, 2019-I2M-5-049, 81621005)
Topics
  • Health Sciences › Medicine › Infectious Diseases › SARS-CoV-2 and COVID-19 Research
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Virus Infections Studies
  • Health Sciences › Medicine › Infectious Diseases › SARS-CoV-2 detection and testing
Keywords
COVID-19 mRNA vaccine, SARS-CoV-2 receptor-binding domain, cynomolgus macaques, neutralizing antibodies, antibody-dependent enhancement, vaccine storage stability, intramuscular vaccination
MeSH terms
Immunogenicity, Vaccine, COVID-19, SARS-CoV-2, COVID-19 Vaccines, mRNA Vaccines, Animals, Antibodies, Viral, Chlorocebus aethiops, Humans, Macaca fascicularis, Vero Cells, Antibodies, Neutralizing, Spike Glycoprotein, Coronavirus

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