人类心肌中瘤亡因子受体的表达和功能意义
G Torre-Amione1, S Kapadia, J Lee
1Cardiology Section, Veterans Administration Medical Center, Houston, TX 77030, USA.
Circulation
|September 15, 1995
概括
瘤亡因子-α (TNF-α) 受体,TNFR1和TNFR2,存在于成人心脏中. 这就是TNF-alpha.
科学领域:
- 心血管生物学 心血管生物学
- 免疫学 免疫学 免疫学
- 分子心脏病学分子心脏病学
背景情况:
- 瘤亡因子-α (TNF-α) 是一种促炎性细胞因子,与心脏病有关.
- TNF-α通过TNFR1和TNFR2受体发挥其作用.
- 成年哺乳动物心脏中TNF受体的作用以前没有研究过.
研究的目的:
- 调查TNF受体在成人心脏中的存在和重要性.
- 为了确定特定的受体调解TNF-alpha的负面内效应.
主要方法:
- 在成人心脏组织中检测TNFR1和TNFR2mRNA和蛋白质.
- 免疫组织化学定位受体到心脏肌细胞.
- 使用具有选择性TNF-α突变的细胞运动试验进行功能评估.
主要成果:
- 成人的心脏对TNFR1和TNFR2都表达mRNA和受体蛋白.
- TNFR1和TNFR2局部存在于心脏肌细胞中.
- 一个与TNFR1结合的TNF-α突变模仿了负的内效应,而TNFR2突变没有影响.
结论:
- 成年人的心脏表达TNFR1和TNFR2.
- 成人心肌细胞中TNF-alpha的负面内效应是由TNFR1激活引起的.
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