Sputnik V 在委内瑞拉传播伽马变异体期间诱发的针对 SARS-CoV-2 变异体的抗体

Viruses Pub Date : 2024-09-18 DOI:10.3390/v16091480
Christopher Franco, Alejandro Cornejo, Mariajosé Rodríguez, Alexis García, Inirida Belisario, Soriuska Mayora, Domingo José Garzaro, Rossana Celeste Jaspe, Mariana Hidalgo, Nereida Parra, Ferdinando Liprandi, José Luis Zambrano, Héctor Rafael Rangel, Flor Helene Pujol
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引用次数: 0

摘要

COVID-19 大流行的特点是 SARS-CoV-2 变体的出现和继承,这些变体能够逃避自然感染和疫苗接种引起的抗体反应。评估接种 Sputnik V 疫苗的个体(105 名志愿者接种)血清中针对不同病毒变体的 IgG 反应性和中和能力。通过酶联免疫吸附试验(ELISA)评估了IgG对尖峰蛋白(S)的反应性。使用不同的病毒变异株进行了斑块还原中和试验。接种后 42 天,与其他变异株相比,奥米克龙变异株对 S 蛋白的识别频率和反应性较低。一般来说,与变异株(尤其是 Omicron)相比,祖先变异株的平均中和滴度更高。然而,与祖先变体相比,一些血清对伽马变体的中和滴度更高,这表明在临床试验期间存在不明显的暴露。Sputnik V诱导的抗体可以识别、持续存在并中和SARS-CoV-2变体,其中Omicron是最能逃避这种反应的变体。这些结果代表了一份关于全球较少研究的疫苗在效力和免疫逃逸方面诱导的体液反应的独特报告,为开发针对未知冠状病毒的疫苗提供了启示。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Sputnik V-Induced Antibodies against SARS-CoV-2 Variants during the Dissemination of the Gamma Variant in Venezuela
The COVID-19 pandemic was characterized by the emergence and succession of SARS-CoV-2 variants able to evade the antibody response induced by natural infection and vaccination. To evaluate the IgG reactivity and neutralizing capacity of the serum of individuals vaccinated with Sputnik V (105 volunteers vaccinated) against different viral variants. IgG reactivity to the Spike protein (S) was evaluated by ELISA. A plaque reduction neutralization test was performed using different viral variant isolates. At 42 days post-vaccination, the frequency of recognition and reactivity to the S protein of the Omicron variant was lower compared to that of the other variants. In general, a higher average neutralization titer was seen against the ancestral variant compared to the variants, especially Omicron. However, some sera exhibited a higher neutralization titer to the Gamma variant compared to the ancestral variant, suggesting unapparent exposure during the clinical trial. Antibodies induced by Sputnik V can recognize, persist, and neutralize SARS-CoV-2 variants, with Omicron being the one that best evades this response. These results represent a unique report on the humoral response induced by a globally lesser-studied vaccine in terms of efficacy and immune escape, offering insights into developing vaccines targeting unknown coronaviruses.
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