概括
病毒葡萄糖蛋白结构被附加的碳水化合物显著改变,影响抗体识别. 消除这些糖会改变免疫系统如何感知这些病毒抗原.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 葡萄糖生物学 葡萄糖生物学
背景情况:
- 病毒葡萄糖蛋白对病毒进入至关重要,是免疫系统的主要目标.
- 碳水化合物部分 (甘氨酸) 在抗体识别中的病毒糖蛋白上的作用尚未完全理解.
研究的目的:
- 调查附加的碳水化合物侧链如何影响抗体对病毒葡萄糖蛋白的反应性.
- 为了确定脱糖化对抗体与病毒葡萄糖蛋白抗原结合的影响.
主要方法:
- 对抗病毒葡萄糖蛋白的抗体活性 (异种抗体,单克隆抗体,合成抗体) 的分析.
- 使用内葡萄糖酶F.消糖化病毒葡萄糖蛋白.
- 测试抗体与原生和脱糖化病毒葡萄糖蛋白结合.
主要成果:
- 大多数抗体在脱糖化后显示病毒葡萄糖蛋白的活性发生变化.
- 针对糖基化病毒的异种抗体在很大程度上对脱糖基化葡萄糖蛋白没有反应.
- 单克隆抗体的反应性各不相同,在去除碳水化合物后,有些人会改善,有些人会减少.
结论:
- 碳水化合物侧链显著影响对病毒葡萄糖蛋白的免疫反应.
- 免疫反应是由宿主对碳水化合物对病毒抗原的影响的感知直接调节的.
- 葡萄糖化模式极大地影响抗体识别和病毒葡萄糖蛋白的免疫性.
相关概念视频
Affinity and Avidity
Overview
Cross-reactivity
Overview
Membrane Carbohydrates
The plasma membrane is a dynamic barrier composed of lipids, proteins, and carbohydrates. It is the epicenter of many cellular processes required for cell growth and survival. Carbohydrates have unique structural and chemical properties that help the plasma membrane to carry out its functions effectively.
Membrane carbohydrates do not have any hydrophobic region and are exclusively located on the cell's outer surface. The addition of sugar molecules or glycosylation of proteins happens in...
Membrane carbohydrates do not have any hydrophobic region and are exclusively located on the cell's outer surface. The addition of sugar molecules or glycosylation of proteins happens in...
Antigens Involved in Adaptive Immunity
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 reactivity.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Immunological Memory
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 is...
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 is...
Immune Response Against Viral Pathogens
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...


