人类中等大动脉中的特定血管的托尔类受体配置文件
Olga Pryshchep1, Wei Ma-Krupa, Brian R Younge
1Lowance Center for Human Immunology and Rheumatology, Emory University, School of Medicine, Atlanta, GA 30322, USA.
Circulation
|September 4, 2008
概括
人类动脉具有免疫感应能力,在不同的血管中具有不同的Toll-like受体 (TLR) 配置文件. 这些独特的TLR指纹决定了血管特异性的T细胞反应,影响了炎症血管病变风险.
科学领域:
- 免疫学 免疫学 免疫学
- 血管生物学 血管生物学
- 病理学 病理学 病理学
背景情况:
- 炎症性血管病变,如血管炎和动脉样硬化,对某些血管床表现出特定的热点.
- 这种组织特异性炎症背后的分子机制尚不清楚.
- 这项研究研究了不同人类宏观血管的免疫感应和T细胞刺激能力.
研究的目的:
- 为了确定人体动脉是否能启动先天性和适应性免疫反应.
- 为了比较六种不同的人类宏观血管的病原体感应和T细胞刺激能力.
- 阐明托尔类受体 (TLR) 和树突细胞在血管炎症中的作用.
主要方法:
- 在人类大动脉和大动脉中对TLRs 1-9的基因表达分析.
- 使用亲密或偶然层剥离的血管壁来识别病原体传感器的实验.
- 评估T细胞介导的炎症在人类动脉严重结合免疫缺陷 (SCID) 的老鼠嵌合体.
主要成果:
- 观察到船舶特定的TLR表达特征,其中TLR2和TLR4无处不在.
- 在介质 - 冒险结处的树突细胞被确定为主要的病原体传感器.
- 通过收养转移的人类T细胞诱导血管壁炎症,具有血管特异的激活特征和差异性细胞因子产生.
结论:
- 人体中等大动脉具有内在的免疫感应和T细胞刺激功能.
- 在整个大血管树上存在不同的TLR概况和选择性T细胞反应.
- 这些血管特异性特征有助于发展炎症性血管病变的风险.
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