下一代纳米疫苗诱导持久免疫力,并对SARS-CoV-2进行保护
Kathleen A Ross1, Sean Kelly2, Kruttika S Phadke3
1Nanovaccine Institute, Iowa State University, Ames, IA 50011, USA.
Acta biomaterialia
|June 6, 2024
概括
使用纳米颗粒和小粒的新型纳米疫苗平台证明了对SARS-CoV-2变种的持久,广泛的免疫力. 这种下一代疫苗诱导了持久的抗体和T细胞反应,保护小鼠免受致命的COVID-19挑战.
科学领域:
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
- 纳米技术 纳米技术
背景情况:
- 第一代SARS-CoV-2疫苗有效地减少了疾病的传播和严重程度.
- 需要引发对新出现的SARS-CoV-2变种的持久和广泛免疫力的疫苗.
- 目前的疫苗主要向尖蛋白,可能会限制对新菌株的疗效.
研究的目的:
- 为SARS-CoV-2设计和优化一个纳米疫苗平台.
- 评估纳米疫苗诱导持久和广泛免疫反应的能力.
- 为了评估纳米疫苗对SARS-CoV-2的保护性疗效.挑战.
主要方法:
- 开发了一种纳米疫苗,采用SARS-CoV-2尖峰和核囊抗原,使用聚化纳米颗粒和块共聚合物微粒.
- 评估了对SARS-CoV-2变种的系统性IgG抗体反应,中和和交叉反应.
- 定量化的抗原特异性CD4+和CD8+T细胞反应.
- 评估了小鼠对致命的SARS-CoV-2挑战的保护.
主要成果:
- 优化的纳米疫苗诱导了对野生型SARS-CoV-2的长期存在的全身IgG抗体反应.
- 纳米疫苗引起了对多种SARS-CoV-2变异的中和交叉反应性抗体反应,包括B.1.1.529.
- 观察到显著的抗原特异性CD4+和CD8+T细胞反应.
- 免疫接种在小鼠中提供了对致命的SARS-CoV-2病毒挑战的保护.
结论:
- 开发的纳米疫苗平台显示出下一代SARS-CoV-2疫苗的前景.
- 纳米疫苗诱导持久,广泛的免疫力,包括抗体和T细胞反应.
- 这个平台提供了一种潜在的战略,可以改善对当前和未来的SARS-CoV-2变种的保护.
更多相关视频
00:10Production of E. coli-expressed Self-Assembling Protein Nanoparticles for Vaccines Requiring Trimeric Epitope Presentation
Published on: August 21, 2019
7.5K
08:27Synthesis and Characterization of mRNA-Loaded PolyBeta Aminoesters Nanoparticles for Vaccination Purposes
Published on: August 13, 2021
4.5K
相关概念视频
Immunological Memory
595
Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
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...
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...
595
Vaccinations
44.4K
Overview
44.4K
Immune Response Against Viral Pathogens
776
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
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...
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...
776
Cells of the Adaptive Immune Response
980
The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
980
