O'Connor Michael B, Umulis David, Othmer Hans G, Blair Seth S
Department of Genetics, Cell Biology and Development, University of Minnesota, Minneapolis, MN 55455, USA.
Development. 2006 Jan;133(2):183-93. doi: 10.1242/dev.02214.
In the early Drosophila embryo, BMP-type ligands act as morphogens to suppress neural induction and to specify the formation of dorsal ectoderm and amnioserosa. Likewise, during pupal wing development, BMPs help to specify vein versus intervein cell fate. Here, we review recent data suggesting that these two processes use a related set of extracellular factors, positive feedback, and BMP heterodimer formation to achieve peak levels of signaling in spatially restricted patterns. Because these signaling pathway components are all conserved, these observations should shed light on how BMP signaling is modulated in vertebrate development.
在早期果蝇胚胎中,BMP 型配体作为形态发生素发挥作用,抑制神经诱导并确定背侧外胚层和羊膜浆膜的形成。同样,在蛹翅发育过程中,BMP 有助于确定翅脉与翅脉间细胞的命运。在此,我们回顾近期的数据,这些数据表明这两个过程利用一组相关的细胞外因子、正反馈以及 BMP 异二聚体的形成,以在空间受限的模式中实现信号传导的峰值水平。由于这些信号通路成分都是保守的,这些观察结果应能阐明 BMP 信号在脊椎动物发育中是如何被调节的。