结合到可活人体细胞的空HLA-B27分子
R J Benjamin1, J A Madrigal, P Parham
1Department of Cell Biology, Stanford University, California 94305-5400.
Nature
|May 2, 1991
概括
人类I类主要基因相容性复合体 (MHC) 分子向CD8+T细胞呈现. 这项研究表明,HLA-B27与具有基特异性的流感结合,这表明它在自身免疫性疾病中起作用.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 一级主要基因相容性复合体 (MHC) 分子向CD8+ T细胞呈现抗原.
- 现有的MHC I类分子结的体外测试在可访问性和等位基特异性方面存在局限性.
研究的目的:
- 开发一种系统来研究与人类I类MHC分子具有等位基特异性的酸结合.
- 为了研究人类I类分子HLA-B27与流感的结合特性.
主要方法:
- 开发了一种新的基于细胞的测定方法,用于类与人类I类MHC分子的结合.
- 使用了一种流感,并分析了与HLA-B27和HLA-Aw68.8的结合.
- 研究了马干扰素和布雷菲尔丁A对结合的作用.
主要成果:
- 人类I类分子HLA-B27表明,流感与精确的等位基区分有显著的结合.
- 与HLA-B27结合需要有活性的细胞,由马干扰素刺激,并由布雷菲尔丁A抑制.
- 空的HLA-B27分子在细胞表面看起来相对稳定,与HLA-Aw68分子不同.
结论:
- 开发的系统允许对具有等位基特异性的MHC I类分子的酸结合进行研究.
- HLA-B27表现出对的稳定结合,可能涉及体内细胞外结合.
- 这种HLA-B27的特性可能有助于其与自身免疫性疾病的关联.
相关概念视频
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.
B Cell Activation and Differentiation
The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...


