德尔塔促成的菲洛波迪亚介导Drosophila的长距离横向抑制
Cyrille De Joussineau1, Jonathan Soulé, Marianne Martin
1Laboratoire Dynamique Moléculaire des Interactions Membranaires, CNRS UMR 5539, Université Montpellier II C.C. 107, Place Eugène Bataillon, 34095 Montpellier cedex 5, France [corrected]
Nature
|December 5, 2003
概括
虫感官器官前体使用薄细胞延伸来调解长距离的横向抑制,这对于毛皮发育至关重要的过程. 这种机制确保了感官器官前体 (SOP) 的适当间距和差异化.
科学领域:
- 发展生物学 发展生物学
- 细胞信号传递 细胞信号传递
- 德洛索菲拉 (Drosophila melanogaster) 的研究研究
背景情况:
- 在Drosophila中神经能力仅限于通过Delta/Notch介导的侧向抑制通过感官器官前体 (SOPs) 进行.
- 鉴于Delta的膜结合性,长距离横向抑制的确切机制以前尚不清楚.
- 众所周知,SOP延长了细细胞过程,这表明它在细胞间通信中发挥了作用.
研究的目的:
- 调查细胞扩展在Drosophila毛发育过程中中介导长距离横向抑制中的作用.
- 为了确定这些扩展是否有助于在更远的距离上传送Delta/Notch信号.
- 了解这种机制如何影响感官器官前体的密度和间距.
主要方法:
- 使用Drosophila melanogaster作为一个模型生物.
- 研究了三角形信号传递在促进平面类动物扩展中的作用.
- 实验性地抑制了filopodia扩展,并评估了对Notch信号和毛发密度的影响.
主要成果:
- 德尔塔信号促进了感觉器官前体中的平面类动物的延伸.
- 实验性抑制filopodia减少了远处细胞中的Notch信号传递.
- 抑制filopodia导致大proneural群体的毛发密度增加.
结论:
- 平面状状作为Drosophila.的长距离横向抑制的调解者.
- 这些细胞专业化使得Delta/Notch能够在较长的细胞距离上发送信号.
- 这些发现为如何实现感官器官前体的精确模式提供了一个新的机制.
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