Differentially conserved amino acid positions may reflect differences in SARS-CoV-2 and SARS-CoV behaviour.

Differentially conserved amino acid positions may reflect differences in SARS-CoV-2 and SARS-CoV behaviour.
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DOI:
10.1093/bioinformatics/btab094
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发表时间:
2021-08-25
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
通讯作者:
Cinatl J
Cinatl J
中科院分区:
其他
文献类型:
--
作者:
Bojkova D;McGreig JE;McLaughlin KM;Masterson SG;Antczak M;Widera M;Krähling V;Ciesek S;Wass MN;Michaelis M;Cinatl J

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SARS-CoV-2是一种新型冠状病毒,目前正在引起大流行。在此,我们对SARS-CoV-2和密切相关的SARS-CoV进行了计算机模拟和细胞培养比较。许多氨基酸位置在SARS-CoV-2和SARS-CoV之间差异保守,这反映了病毒行为的差异,即SARS-CoV-2更有效的人际传播和与SARS-CoV相关的更高死亡率。S蛋白(介导病毒进入)的变异与其与ACE 2(细胞S受体)相互作用的差异以及对TMPRSS 2(通过S裂解使病毒进入)抑制的敏感性相关。抗ACE 2抗体比SARS-CoV-2感染更强地抑制SARS-CoV,可能是由于SARS-CoV-2 S-ACE 2相对于SARS-CoV S具有更强的亲和力。此外,SARS-CoV-2和SARS-CoV在细胞嗜性方面表现出差异。细胞ACE 2和TMPRSS 2水平未表明对SARS-CoV-2的易感性。总之,我们确定了SARS-CoV-2和SARS-CoV之间的基因组变异,这可能反映了它们在临床和生物学行为上的差异。 补充数据可在Bioinformatics在线获得。
SARS-CoV-2 is a novel coronavirus currently causing a pandemic. Here, we performed a combined in-silico and cell culture comparison of SARS-CoV-2 and the closely related SARS-CoV. Many amino acid positions are differentially conserved between SARS-CoV-2 and SARS-CoV, which reflects the discrepancies in virus behaviour, i.e. more effective human-to-human transmission of SARS-CoV-2 and higher mortality associated with SARS-CoV. Variations in the S protein (mediates virus entry) were associated with differences in its interaction with ACE2 (cellular S receptor) and sensitivity to TMPRSS2 (enables virus entry via S cleavage) inhibition. Anti-ACE2 antibodies more strongly inhibited SARS-CoV than SARS-CoV-2 infection, probably due to a stronger SARS-CoV-2 S-ACE2 affinity relative to SARS-CoV S. Moreover, SARS-CoV-2 and SARS-CoV displayed differences in cell tropism. Cellular ACE2 and TMPRSS2 levels did not indicate susceptibility to SARS-CoV-2. In conclusion, we identified genomic variation between SARS-CoV-2 and SARS-CoV that may reflect the differences in their clinical and biological behaviour. Supplementary data are available at Bioinformatics online.
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