在健康个体中检测到的ICAM-1自身抗体,并与功能性表位体交叉反应
Marc L Herman1,2, Eric S Geanes1, Rebecca McLennan1
1Genomic Medicine Center, Children's Mercy Research Institute, Kansas City, MO, United States.
ImmunoHorizons
|June 25, 2025
概括
对细胞内粘附分子1 (ICAM-1) 的自身抗体随着年龄的增长而增加,并且炎症状况下降. 这些自身抗体向功能部位,可能来自分子模拟,影响免疫调节.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 细胞内粘附分子1 (ICAM-1) 是细胞表面糖蛋白,对细胞相互作用和免疫反应至关重要.
- 在感染和炎症性疾病中观察到高ICAM-1表达,抗ICAM-1疗法显示临床成功.
- 自然存在的自身抗体在免疫调节中起作用,影响健康和疾病状态.
研究的目的:
- 在不同年龄组和疾病状态中调查ICAM-1自身抗体的存在和水平.
- 确定ICAM-1自身抗体向的特定表位和它们的功能相关性.
- 描述ICAM-1自身抗体的IgG亚类分布,并探索它们生成的潜在触发因素.
主要方法:
- 在各种年龄组和疾病群体中量化ICAM-1自身抗体水平.
- 类微阵列分析以映射ICAM-1自身抗体表位.
- 对抗ICAM-1抗体的IgG子类 (例如IgG2) 丰富的确定.
主要成果:
- ICAM-1自身抗体水平表现出与年龄相关的增加.
- 在患有炎症状况的个体中观察到较低的ICAM-1自身抗体水平.
- 鉴定了由重叠与关键ICAM-1功能结合部位的自身抗体向的表位.
- 对于IgG2亚类,ICAM-1自身抗体被显著丰富.
结论:
- ICAM-1自身抗体在免疫调节中发挥着动态作用,受年龄和炎症状况的影响.
- 自抗体对功能ICAM-1位点的向表明ICAM-1活动的潜在调节.
- 丰富IgG2亚类指向潜在的触发因素,如细菌抗原的分子模仿或免疫失调.
- 进一步了解ICAM-1自身抗体可能为炎症和自身免疫性疾病提供新的治疗策略.
更多相关视频
11:10Antibody Binding Specificity for Kappa (Vκ) Light Chain-containing Human (IgM) Antibodies: Polysialic Acid (PSA) Attached to NCAM as a Case Study
Published on: June 29, 2016
14.2K
06:46A High-Throughput Multiplexed Screening for Type 1 Diabetes, Celiac Diseases, and COVID-19
Published on: July 5, 2022
2.9K
相关概念视频
Cross-reactivity
31.5K
Overview
31.5K
Immunoglobulin-like Cell Adhesion Molecules
3.4K
Immunoglobulin-like cell adhesion molecules or Ig-CAMs are a versatile group of cell surface glycoproteins belonging to the immunoglobulin protein superfamily. Ig-CAMs possess the characteristic immunoglobulin protein domains and other domains such as the fibronectin type III domain. The Ig domains are glycosylated to varying degrees in different Ig-CAMs.
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
3.4K
Antigens Involved in Adaptive Immunity
700
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...
700
