Department of Tropical Medicine, Medical Microbiology, and Pharmacology, University of Hawai'i at Mānoa, Honolulu, HI, USA.
Pacific Center for Emerging Infectious Diseases Research, University of Hawai'i at Mānoa, Honolulu, HI, USA.
Commun Biol. 2022 Oct 10;5(1):1081. doi: 10.1038/s42003-022-04030-3.
SARS-CoV-2 worldwide spread and evolution has resulted in variants containing mutations resulting in immune evasive epitopes that decrease vaccine efficacy. We acquired SARS-CoV-2 positive clinical samples and compared the worldwide emerged spike mutations from Variants of Concern/Interest, and developed an algorithm for monitoring the evolution of SARS-CoV-2 in the context of vaccines and monoclonal antibodies. The algorithm partitions logarithmic-transformed prevalence data monthly and Pearson's correlation determines exponential emergence of amino acid substitutions (AAS) and lineages. The SARS-CoV-2 genome evaluation indicated 49 mutations, with 44 resulting in AAS. Nine of the ten most worldwide prevalent (>70%) spike protein changes have Pearson's coefficient r > 0.9. The tenth, D614G, has a prevalence >99% and r-value of 0.67. The resulting algorithm is based on the patterns these ten substitutions elucidated. The strong positive correlation of the emerged spike protein changes and algorithmic predictive value can be harnessed in designing vaccines with relevant immunogenic epitopes. Monitoring, next-generation vaccine design, and mAb clinical efficacy must keep up with SARS-CoV-2 evolution, as the virus is predicted to remain endemic.
SARS-CoV-2 的全球传播和进化导致了包含免疫逃避表位突变的变体的出现,从而降低了疫苗的效力。我们获得了 SARS-CoV-2 阳性的临床样本,并比较了来自关注/感兴趣变体的全球出现的刺突突变,开发了一种用于监测疫苗和单克隆抗体背景下 SARS-CoV-2 进化的算法。该算法每月对对数转换的流行数据进行分区,皮尔逊相关系数确定氨基酸取代(AAS)和谱系的指数出现。对 SARS-CoV-2 基因组的评估表明有 49 个突变,其中 44 个导致 AAS。在全球流行率最高的(>70%)的十个刺突蛋白变化中,有九个具有皮尔逊系数 r>0.9。第十个 D614G 的流行率>99%,r 值为 0.67。由此产生的算法基于这十个取代所阐明的模式。可以利用出现的刺突蛋白变化和算法预测值的强正相关来设计具有相关免疫原性表位的疫苗。监测、下一代疫苗设计和 mAb 临床疗效必须跟上 SARS-CoV-2 的进化,因为预计该病毒将继续流行。