Towler Dwight A
Department of Medicine, Center for Cardiovascular Research, Division of Bone and Mineral Diseases, Washington University School of Medicine, St. Louis, Missouri 63110, USA.
J Clin Invest. 2007 Jun;117(6):1477-80. doi: 10.1172/JCI32518.
In this issue of the JCI, Wang, Clemens, and colleagues demonstrate that hypoxia-inducible factor alpha (HIF alpha) signaling in bone-building osteoblasts is central to the coupling of angiogenesis and long bone development in mice (see the related article beginning on page 1616). They show that bone formation controlled by osteoblast HIF alpha signaling is not cell autonomous but is coupled to skeletal angiogenesis dependent upon VEGF signaling. Thus, strategies that promote HIF alpha signaling in osteoblasts may augment bone formation and accelerate fracture repair.
在本期《临床研究杂志》中,王、克莱门斯及其同事证明,在构建骨骼的成骨细胞中,缺氧诱导因子α(HIFα)信号传导对于小鼠血管生成与长骨发育的耦联至关重要(见第1616页开始的相关文章)。他们表明,由成骨细胞HIFα信号传导控制的骨形成并非细胞自主行为,而是与依赖VEGF信号传导的骨骼血管生成相耦联。因此,促进成骨细胞中HIFα信号传导的策略可能会增强骨形成并加速骨折修复。