结石风毒素和来自神经毒素的化分子是有效的双价疫苗
Bo-Lin Li1, Jing-Rong Wang1, Xu-Yang Liu1,2
1Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, 20 Dongdajie Street, Beijing, 100071, China.
Applied microbiology and biotechnology
|September 23, 2023
概括
开发了结合毒素 (TeNT) 和肉毒神经毒素 (BoNT) 受体结合域 (RBDs) 的新型双价疫苗. 这些融合分子有效地保护了两种毒素,显示出作为双重作用子单元疫苗的前景.
科学领域:
- 生物化学和分子生物学
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
背景情况:
- 毒素 (TeNT) 和肉毒神经毒素 (BoNTs) 是具有相似结构的强烈神经毒素,每一种都具有不同的受体结合域 (RBD).
- 开发针对这些毒素的有效疫苗对于公共卫生至关重要,分单元疫苗为传统毒素提供了更安全的替代方案.
研究的目的:
- 设计,准备和描述结合TeNT RBD (THc) 和BoNT/A RBD (AHc) 的新型聚变分子.
- 评估这些聚变分子在体外受体结合相互作用,免疫性和对TeNT和BoNT/A的保护功效.
主要方法:
- 重组融合蛋白的构建和鉴定:THc-Linker-AHc和AHc-Linker-THc.
- 在实验室中评估Hc域与类胺 (GT1b) 和SV2受体的相互作用.
- 在用融合蛋白免疫接种后,对动物模型中的免疫反应和保护功效的研究.
主要成果:
- 重组THc-链接器-AHc和AHc-链接器-THc蛋白显示出正确的结构,大小和结合活性.
- 融合分子诱导了针对TeNT和BoNT/A.的高标位特定中和抗体.
- 用融合蛋白进行免疫接种,对两种毒素同时受到挑战具有强烈的保护效果.
结论:
- 设计的双RBD融合分子代表了有效的双价子单元疫苗,能够同时保护TeNT和BoNT/A.
- THc和AHc域独立地作为融合分子中的抗原起作用,保留用于中和抗体诱导的关键表位.
- 这种实验设计为开发针对多种生物毒素的有力双价子单元疫苗提供了宝贵的平台.
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