一种基于三分体祖先尖的mRNA疫苗可以为SADS-CoV提供跨代保护
Teng Zhang1,2,3, Jiale Yao1, Xinchun Guo1
1Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, College of Life Science, Nanyang Normal University, Nanyang, 473000, Henan, China.
一种新的祖先尖峰 (tA) mRNA疫苗有效地保护牲畜免受SADS-CoV的感染. 这种创新方法提供了广泛的免疫力和跨物种保护,防止新出现的动物性冠状病毒.
科学领域:
- 兽医病毒学 兽医病毒学
- 疫苗开发 疫苗开发
- 冠状病毒 冠状病毒
背景情况:
- 新出现的冠状病毒,如SADS-CoV,对动物健康和人类福祉构成重大威胁.
- 病毒变异的疫苗规避需要新的策略来有效控制疾病.
研究的目的:
- 设计和评估一种基于祖先尖峰抗原的mRNA疫苗,用于对抗SADS-CoV.
- 评估疫苗在赋予广谱和跨物种免疫力的有效性.
主要方法:
- 遗传学抗原重建以设计一个三元祖先尖峰 (tA) 抗原.
- 开发一种核酸基改的mRNA-LNP疫苗 (tA-mRNA-LNP).
- 针对小鼠和母猪的免疫接种,随后对小鼠,母猪及其后代进行挑战性研究.
主要成果:
- 这种TA-mRNA-LNP疫苗在免疫动物中诱导了强大的免疫力.
- 在小鼠,母猪和小猪中观察到对致命的SADS-CoV挑战的完全保护.
- 疫苗引起的抗体表现出跨物种反应性,阻断了人类,子和细胞中的SADS-CoV.
- 疗效至少维持了140天.
结论:
- 祖先抗原设计与mRNA-LNP技术相结合,是对抗不断演变的冠状病毒的有希望的策略.
- 这种方法提供了一种可扩展的解决方案,用于保护牲畜免受动物传染病威胁.
- 该研究提供了一种主动的方法来控制新出现的冠状病毒感染.
更多相关视频
08:07A "Plug-And-Display" Nanoparticle Vaccine Platform Based on Outer Membrane Vesicles Displaying SARS-CoV-2 Receptor-Binding Domain
Published on: July 25, 2022
12:09Protocol for Recombinant RBD-based SARS Vaccines: Protein Preparation, Animal Vaccination and Neutralization Detection
Published on: May 2, 2011
相关概念视频
Cross-reactivity
Immunological Memory
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
Immune Response Against Viral Pathogens
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
Diversity of Antigen Receptors
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
Antigens Involved in Adaptive Immunity
Complete Antigens
Complete antigens possess both immunogenicity and...
Humoral Immune Responses
