Wang S H, Simcox A, Campbell G
Department of Molecular Genetics, Ohio State University, Columbus, Ohio 43210, USA.
Genes Dev. 2000 Sep 15;14(18):2271-6. doi: 10.1101/gad.827000.
Cell fate decisions in the early Drosophila wing disc assign cells to compartments (anterior or posterior and dorsal or ventral) and distinguish the future wing from the body wall (notum). Here we show that EGF-receptor (EGFR) signaling stimulated by its ligand, Vein, has a fundamental role in regulating two of these cell fate choices: (1) Vn/EGFR signaling directs cells to become notum by antagonizing wing development and by activating notum-specifying genes; (2) Vn/EGFR signaling directs cells to become part of the dorsal compartment by induction of apterous, the dorsal selector gene, and consequently also controls wing development, which depends on an interaction between dorsal and ventral cells.
果蝇早期翅盘内的细胞命运决定将细胞分配到不同的区域(前部或后部以及背部或腹部),并区分未来的翅膀与体壁(背板)。我们在此表明,由其配体Vein刺激的表皮生长因子受体(EGFR)信号传导在调节这些细胞命运选择中的两个方面具有基本作用:(1)Vn/EGFR信号传导通过拮抗翅膀发育并激活指定背板的基因,引导细胞成为背板;(2)Vn/EGFR信号传导通过诱导背部选择基因apterous,引导细胞成为背部区域的一部分,因此也控制依赖于背部和腹部细胞之间相互作用的翅膀发育。