葡萄糖和转录酶对血管生成的调节
Rania Harfouche1, Dirk M Hentschel1, Stephanie Piecewicz1
1Department of Medicine (R.H., D.M.H., S.P., S.B., S.S.), Brigham and Women's Hospital, Boston, Mass; Department of Molecular Medicine and Pathology (C.P.), University of Auckland, Auckland, New Zealand; Department of Biological Engineering (D.E., T.K., R.S.), Massachusetts Institute of Technology, Cambridge, Mass; and Harvard-MIT Division of Health Sciences and Technology (R.H., S.P., S.B., D.E., T.K., R.S., S.S.), Cambridge, Mass.
这项研究揭示了肝硫酸甘氨酸和基因表达如何相互作用以调节血管形成 (血管生成). 调节这些相互作用在缺血性条件下为治疗性血管化提供了潜力.
科学领域:
- 生物化学 生物化学
- 发育生物学 发展生物学
- 分子生物学分子生物学
背景情况:
- 治疗性血管生成是治疗缺血性疾病的一个有前途的策略.
- 细胞表面的葡萄糖体,特别是肝硫酸葡萄糖氨基酸 (HSG) 和转录体,正在研究它们在调节血管生成中的作用.
研究的目的:
- 为了阐明由HSG和转录组共同调节血管生成.
- 探索在血管形成过程中糖体和转录体之间的相互作用.
主要方法:
- 胚胎干细胞分化成内皮细胞.
- 使用小毛RNA的N-脱乙酶/N-硫转移酶1 (NDST1) 的降解.
- 使用斑马鱼胚胎进行体内研究.
- 微阵列分析以确定基因表达模式.
主要成果:
- 与NDST1水平相关的HSG硫化对于内皮细胞分化至关重要.
- NDST1淘汰或HSG修饰损害了胚胎干细胞分化和斑马鱼血管化.
- 基因表达分析揭示了将葡萄糖调节与细胞信号,生存和命运决定联系起来的途径,涉及叉头盒O3A/5和类似胰岛素的生长因子.
结论:
- 这项研究表明,在血管生成过程中,糖体和转录体之间存在一种新的相互作用.
- 针对细胞的糖微环境为治疗性血管化策略提供了潜在的途径.
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