特发性及家族性肺动脉高压致病基因骨形成蛋白受体2启动子结构和功能分析
被引量:3
摘要
目前特发性肺动脉高压(idiopathicpulmonaryarteryhypertension。IPAH)和家族性肺动脉高压(familypulmonaryarteryhypertension,FPAH)的病因不明,死亡率高,预后差。2000年Deng和Lane等发现骨形成蛋白受体2(bonemorphogeneticproteinreceptor2,BMPR2)基因突变是FPAH和IPAH的重要病因。BMPR2基因是转化生长因子β(TGF-β)受体超家族成员,TGF-β/BMPR/BMP信号传导是血管形成、细胞增殖及细胞凋亡的重要因子。研究结果显示约50%~69%的FPAH和21%~26%的IPAH患者存在BMP如基因突变。此外,在服用减肥药、肺静脉闭塞和先天性心脏病导致的肺动脉高压患者中也发现BMP如基因突变。在正常人及小鼠的肺血管内皮细胞BMP如基因表达增强,但近年发现即使在没有BMP如基因突变的情况下,FPAH和IPAH患者肺血管内皮细胞BMP如基因表达仍低下,因此,推测BMPR2基因启动子区域结构或功能异常可能会影响该基因的表达,从而丧失其对血管内皮细胞的生长抑制作用,最终导致肺动脉高压。研究结果显示,在肺动脉高压大鼠模型中HMG-CoA还原酶抑制剂辛伐他汀不但可降低肺动脉高压、抑制血管内皮细胞和平滑肌细胞增生,还可改善FPAH和IPAH患者对运动的耐受力、血液动力学及生存率。本研究的目的是分析人体BMPR2基因启动子的结构和功能并探讨辛伐他汀对BMPR2基因启动子的调控作用,为研究BMPR2基因缺陷与FPAH和IPAH的病因关系奠定基础。
出处
《中华结核和呼吸杂志》
CAS
CSCD
北大核心
2007年第3期231-232,共2页
Chinese Journal of Tuberculosis and Respiratory Diseases
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同被引文献19
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二级引证文献2
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