N121T and N121S substitutions on the SARS-CoV-2 spike protein impact on serum neutralization

IF 6.8 3区 医学 Q1 VIROLOGY Journal of Medical Virology Pub Date : 2024-09-02 DOI:10.1002/jmv.29871
Van Thi Lo, Hyun A. Lim, Seong Sik Jang, Min Chan Kim, Alain Chrysler Chamfort, Ha Yeon Kim, Da Young Mun, Min Chang Kang, Han Byul Lee, Sunjoo Kim, Younghee Lee, Sangkyu Park, Sun-Woo Yoon, Hye Kwon Kim
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Abstract

The N121 site on the spike protein of SARS-CoV-2 is associated with heme and its metabolite, biliverdin, which can affect antibody binding. Both N121T and N121S substitutions have been observed in natural conditions and in a hamster model of dual infection with SARS-CoV-2 and Influenza A virus. Serum pseudotype neutralization assays against HIV-1 particles carrying wild-type, N121T, and N121S spikes with immune mouse and human sera revealed that N121T and N121S mutations had a greater impact on serum neutralization than biliverdin treatment. Although N121T and N121S substitutions are not currently major SARS-CoV-2 variants of concern, this study could provide fundamental information to prepare for potential future mutations at the N121 site of SARS-CoV-2.

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SARS-CoV-2 棘突蛋白上的 N121T 和 N121S 取代对血清中和的影响。
SARS-CoV-2 尖峰蛋白上的 N121 位点与血红素及其代谢产物胆绿素有关,会影响抗体的结合。N121T 和 N121S 两个置换位点在自然条件下以及在仓鼠的 SARS-CoV-2 和甲型流感病毒双重感染模型中都被观察到。用免疫小鼠和人类血清对携带野生型、N121T 和 N121S 尖峰的 HIV-1 颗粒进行血清假型中和试验发现,N121T 和 N121S 突变对血清中和的影响大于胆绿素处理。尽管 N121T 和 N121S 突变目前还不是令人担忧的 SARS-CoV-2 主要变异,但这项研究可以提供基本信息,为 SARS-CoV-2 N121 位点未来可能发生的突变做好准备。
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来源期刊
Journal of Medical Virology
Journal of Medical Virology 医学-病毒学
CiteScore
23.20
自引率
2.40%
发文量
777
审稿时长
1 months
期刊介绍: The Journal of Medical Virology focuses on publishing original scientific papers on both basic and applied research related to viruses that affect humans. The journal publishes reports covering a wide range of topics, including the characterization, diagnosis, epidemiology, immunology, and pathogenesis of human virus infections. It also includes studies on virus morphology, genetics, replication, and interactions with host cells. The intended readership of the journal includes virologists, microbiologists, immunologists, infectious disease specialists, diagnostic laboratory technologists, epidemiologists, hematologists, and cell biologists. The Journal of Medical Virology is indexed and abstracted in various databases, including Abstracts in Anthropology (Sage), CABI, AgBiotech News & Information, National Agricultural Library, Biological Abstracts, Embase, Global Health, Web of Science, Veterinary Bulletin, and others.
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