血管光滑肌细胞中BTEB2转录因子的调节表达:对发育和病理表达特征的分析表明,作为恢复性肌的预测因子,具有重要意义
Y Hoshino1, M Kurabayashi, T Kanda
1Second Department of Internal Medicine, Gunma University School of Medicine, Gunma.
Circulation
|November 15, 2000
概括
转录因子BTEB2在胎儿细胞中是丰富的,但不是成年细胞. 它在激活的光滑肌细胞中的表达与冠状动脉疾病中较高的复原风险相关,这表明BTEB2是血管细胞调节的标志物.
科学领域:
- 血管生物学 血管生物学
- 分子生物学分子生物学
- 心血管研究研究心血管研究
背景情况:
- BTEB2是一种类似于克鲁佩尔的指转录因子,调节SMemb/NMHC-B基因表达.
- SMemb/NMHC-B基因与光滑肌肉细胞 (SMC) 的表型调制有关.
- 之前的工作确立了BTEB2在中小企业的监管作用.
研究的目的:
- 评估BTEB2的发育和病理表达.
- 评估BTEB2在人类冠状动脉疾病中的临床相关性.
- 确定BTEB2作为血管SMC表型调节的标记物的作用.
主要方法:
- 人类和子大动脉组织 (胎儿和成年人) 的免疫组织化学.
- 对气球受伤的大动脉进行分析,观察新极端SMC中的BTEB2表达.
- 检查冠状动脉病变 (初级和静脉病变) 的骨干切除样本.
主要成果:
- BTEB2的表达在发育上受到调节,在胎儿中高,在成人大动脉SMC中低.
- BTEB2主要表达在受伤的大动脉的新极端SMC和冠状动脉病变的星状SMC中.
- 与BTEB2-阴性病变 (25.0%) 相比,具有BTEB2-阳性细胞的原发性病变显示出明显更高的复原病发率 (55.6%).
结论:
- 在血管SMC中,BTEB2的表达在发育和病理上受到调节.
- 优先表达BTEB2在没有分化或激活的SMC中.
- BTEB2作为血管SMCs表型调节的潜在分子标记物,并与增加复原风险有关.
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