Total antibodies and neutralizing ability of convalescent sera against three different strains of SARS-CoV-2
- 作者: Palyanova N.V.1, Adamenko L.S.1, Kurskaya O.G.1, Saroyan T.A.1, Solomatina M.V.1, Sobolev I.A.1, Shestopalov A.M.1
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隶属关系:
- Federal Research Center for Fundamental and Translational Medicine
- 期: 卷 70, 编号 1 (2025)
- 页面: 78-86
- 栏目: ORIGINAL RESEARCH
- URL: https://journal-vniispk.ru/0507-4088/article/view/287912
- DOI: https://doi.org/10.36233/0507-4088-290
- EDN: https://elibrary.ru/qcllgf
- ID: 287912
如何引用文章
详细
The aim of the study was to assess the level of humoral immunity to SARS-CoV-2 in COVID-19 convalescents.
Materials and methods. We used ELISA for antibody quantitation, microneutralization test using three SARS-CoV-2 strains for neutralizing activity measurement, Illumina MiSeq platform for NGS sequencing and NextClade resource for phylogenetic analysis.
Results. The mean concentration of antibody in convalescents was 133.42 ± 7.2 BAU/mL and the value depended on neither the gender and age of the patients, nor on the time elapsed since COVID-19 infection. The studied SARS-CoV-2 strains were sequenced and deposited in the international GISAID database. According to genetic analysis: EPI_ISL_19424272 phylogenetically belongs to the B1.1 clade, EPI_ISL_19424271 – to B.1.1.397 clade, EPI_ISL_19424270 – to Delta B.1.617.2.122. There were no significant differences in the neutralizing ability of convalescent sera (those who had been ill 2–3 months before the study) for the first two variants of SARS-CoV-2 and it was significantly reduced for the Delta variant, which appeared in the Novosibirsk region later.
Conclusions. The neutralizing activity of convalescent sera was the highest against those variants of the virus that the patient had recovered from, while was reduced or absent against the new variant. The antibody developed to the original variants of the SARS-CoV-2 may not be effective enough against newly emerging strains due to the emergence of mutations in the virus that allow it to evade previously developed humoral immune response.
作者简介
Natalia Palyanova
Federal Research Center for Fundamental and Translational Medicine
编辑信件的主要联系方式.
Email: natalia.palyanova@gmail.com
ORCID iD: 0000-0002-1783-5798
SPIN 代码: 4975-4485
Scopus 作者 ID: 55983936800
Researcher ID: KAM-6786-2024
junior researcher
俄罗斯联邦, 630117, NovosibirskLubov Adamenko
Federal Research Center for Fundamental and Translational Medicine
Email: aminisib@yandex.ru
ORCID iD: 0000-0001-6412-3622
junior researcher
俄罗斯联邦, 630117, NovosibirskOlga Kurskaya
Federal Research Center for Fundamental and Translational Medicine
Email: kurskaya_og@mail.ru
ORCID iD: 0000-0002-1931-2026
Ph.D., Head of the Laboratory of Respiratory Viral Infections, Senior Researcher
俄罗斯联邦, 630117, NovosibirskTereza Saroyan
Federal Research Center for Fundamental and Translational Medicine
Email: 111.st.13@rambler.ru
ORCID iD: 0000-0001-8071-5425
junior researcher
俄罗斯联邦, 630117, NovosibirskMariya Solomatina
Federal Research Center for Fundamental and Translational Medicine
Email: solomatina.mariyav@yandex.com
ORCID iD: 0000-0003-0736-0271
Ph.D., senior researcher
俄罗斯联邦, 630117, NovosibirskIvan Sobolev
Federal Research Center for Fundamental and Translational Medicine
Email: sobolev.riov@yandex.ru
ORCID iD: 0000-0002-4561-6517
Ph.D., Senior Researcher, Head of the Laboratory of Genomics and Virus Evolution
俄罗斯联邦, 630117, NovosibirskAlexander Shestopalov
Federal Research Center for Fundamental and Translational Medicine
Email: shestopalov2@mail.ru
ORCID iD: 0000-0002-9734-0620
Ph.D., professor, Dr. of Sc., Honored Scientist of the Russian Federation, Director Research Institute of Virology FRC FTM
俄罗斯联邦, 630117, Novosibirsk参考
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