对SARS-CoV-2的水溶性核囊蛋白的表达及其免疫性分析
Y B Wang1, S W Wang2, Q Y Jin3
1School of Public Health, Xinxiang Medical University, Xinxiang 453003, P.R. China.
Polish journal of veterinary sciences
|December 13, 2023
概括
研究人员开发了一种生产水溶性严重急性呼吸系统综合征冠状病毒2 (SARS-CoV-2) 核体 (N) 蛋白质的方法. 这一进展对于创建2019年新冠肺炎疾病 (COVID-19) 的准确诊断测试至关重要.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 生物技术是生物技术.
背景情况:
- 冠状病毒疾病2019 (COVID-19),由SARS-CoV-2引起,仍然是一个重大的全球健康挑战.
- 在SARS-CoV-2核体 (N) 蛋白质是丰富的,并引起早期抗体反应,使其成为诊断的关键目标.
- 大规模的N蛋白生产对于开发免疫测试来检测SARS-CoV-2抗体和控制病毒传播至关重要.
研究的目的:
- 开发一种大规模制备水溶性SARS-CoV-2 N蛋白质的方法.
- 描述复合N蛋白的免疫性和表位特征.
- 为了产生针对SARS-CoV-2 N蛋白的单克隆抗体,用于潜在的诊断应用.
主要方法:
- 诱导水溶性N蛋白表达在25°C与0.5mMIPTG进行12小时.
- 西方斑点和ELISA测定验证了疫苗诱导血清对复合N蛋白的识别.
- 使用ELISA,IPMA和IFA进行单克隆抗体生产和表征的混合体技术.
主要成果:
- 再组合的N蛋白被认可来自于用Sinovac无活化SARS-CoV-2疫苗接种疫苗的个体的血清.
- 成功生成了四种单克隆抗体 (2B1B1,4D3A3,5G1F8,7C6F5),其ELISA标位超过1.28×10^6.0.
- 单克隆抗体在各种测试中表现出与N蛋白的特异反应性,证实了本地表位的存在.
结论:
- 准备的水溶性N蛋白具有高度免疫性,并与原生SARS-CoV-2N蛋白共享表位.
- 成功生产水溶性N蛋白及其特定单克隆抗体为开发先进的COVID-19诊断免疫试验提供了基础.
- 这项工作有助于通过改进的检测方法控制SARS-CoV-2传播的持续努力.
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