Role of hypoxia-inducible factor-1alpha in angiogenic-osteogenic coupling.

Role of hypoxia-inducible factor-1alpha in angiogenic-osteogenic coupling.
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DOI:
10.1007/s00109-009-0477-9
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发表时间:
2009-06
影响因子:
4.7
通讯作者:
Clemens, Thomas L.
Clemens, Thomas L.
中科院分区:
医学2区
文献类型:
--
作者:
Riddle, Ryan C.;Khatri, Richa;Schipani, Ernestina;Clemens, Thomas L.

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在骨发育和再生过程中,血管生成和骨生成是紧密耦合的。血管系统为骨的发育和再生提供氧气,并向基质传递关键信号,刺激间充质细胞分化,促进骨形成。最近的研究表明,缺氧诱导因子(hif)是启动血管生成-成骨级联所必需的。对小鼠HIF/血管内皮生长因子(VEGF)通路的单个组分进行遗传操作,为如何实现耦合提供了线索。在这篇文章中,我们回顾了目前对血管生成-成骨耦合的细胞和分子机制的理解。我们还简要讨论了HIF和VEGF在骨骼修复中的治疗操作。这些发现为开发改善骨增生和修复的新疗法提供了有希望的方法。
Angiogenesis and osteogenesis are tightly coupled during bone development and regeneration. The vasculature supplies oxygen to developing and regenerating bone and also delivers critical signals to the stroma that stimulate mesenchymal cell specification to promote bone formation. Recent studies suggest that the hypoxiainducible factors (HIFs) are required for the initiation of the angiogenic–osteogenic cascade. Genetic manipulation of individual components of the HIF/vascular endothelial growth factor (VEGF) pathway in mice has provided clues to how coupling is achieved. In this article, we review the current understanding of the cellular and molecular mechanisms responsible for angiogenic–osteogenic coupling. We also briefly discuss the therapeutic manipulation of HIF and VEGF in skeletal repair. Such discoveries suggest promising approaches for the development of novel therapies to improve bone accretion and repair.
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