抗免疫复杂抗体在HIV Env 免疫原体的重复免疫接种过程中引起
Sharidan Brown1, Aleksandar Antanasijevic2, Leigh M Sewall1
1Department of Integrative, Structural and Computational Biology, Scripps Research; La Jolla, CA, USA.
bioRxiv : the preprint server for biology
|April 1, 2024
概括
新的HIV-1疫苗策略揭示了针对独特表位的抗免疫复杂抗体. 这些抗体在重复免疫接种后出现,为开发针对艾滋病毒和其他病原体的有效疫苗提供了洞察力.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 结构生物学 结构生物学
背景情况:
- 目前的HIV-1疫苗研究重点是通过使用HIV包膜 (Env) 免疫原体的原始增强疗法,产生广泛中和抗体 (bnAbs).
- 早期的抗体反应通常针对免疫原上的非中和表位,延迟bnAbs.的发展.
- 自主中和抗体通常在免疫主导表位在增强期间和后出现.
研究的目的:
- 为了研究新的抗体反应超越bnAbs由HIV Env免疫原体的重复免疫产生.
- 描述新发现的抗免疫复合抗体的结构.
- 了解这些发现对艾滋病毒疫苗开发和其他传染病的影响.
主要方法:
- 在疫苗模型中使用了HIV Env免疫原体的重复免疫.
- 采用多克隆表位图绘制来识别和表征抗体反应.
- 使用结构生物学技术确定了六种抗免疫复合抗体的结构.
主要成果:
- 确定了一种独特的抗体反应类型,称为反免疫复合抗体,在多次免疫接种后出现.
- 这些抗体向由已经与HIV Env结合的抗体框架区域形成的独特的白痴细胞.
- 结构分析为这些新型抗体的结合相互作用提供了详细的见解.
结论:
- 反复暴露于抗原可以诱导独特的抗体反应,如抗免疫复合抗体,这可能在疫苗有效性中起作用.
- 了解这些反应对于优化当前的HIV疫苗开发策略至关重要.
- 这些发现对抗病原体的疫苗设计具有更广泛的意义,这些病原体需要反复暴露于抗原以获得免疫力.
更多相关视频
13:41Use of Interferon-γ Enzyme-linked Immunospot Assay to Characterize Novel T-cell Epitopes of Human Papillomavirus
Published on: March 8, 2012
12.4K
13:36Utilizing the Antigen Capsid-Incorporation Strategy for the Development of Adenovirus Serotype 5-Vectored Vaccine Approaches
Published on: May 6, 2015
10.4K
相关概念视频
Cross-reactivity
31.1K
Overview
31.1K
Immunological Memory
605
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...
605
Antigens Involved in Adaptive Immunity
489
An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and...
Complete Antigens
Complete antigens possess both immunogenicity and...
489
Vaccinations
44.5K
Overview
44.5K
Immune Response Against Viral Pathogens
779
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...
779
