裂纹是Drosophila机器人受体的中线驱逐剂
T Kidd1, K S Bland, C S Goodman
1Howard Hughes Medical Institute, Department of Molecular and Cell Biology, University of California, Berkeley 94720, USA.
Cell
|April 2, 1999
概括
裂纹被确定为圆形 (Robo) 受体的中线排斥性连接体. 遗传证据表明,Slit通过在中线上排斥生长来控制轴突引导和中皮层迁移.
科学领域:
- 神经科学是一个神经科学.
- 发展生物学 发展生物学
- 分子生物学分子生物学
背景情况:
- 圆形 (Robo) 受体是已知的胚胎中线上的生长的排斥指导线索.
- 绑定Robo的特定中线连接体一直未被确定.
研究的目的:
- 为了识别圆形 (Robo) 受体的中线连接体.
- 阐明Slit-Robo相互作用在轴突引导和细胞迁移中的功能.
主要方法:
- 在模型生物中进行遗传分析.
- 对基因表达模式的分析.
- 剂量敏感的基因相互作用研究.
主要成果:
- 遗传证据表明,Slit是Robo的中线连接体.
- 裂纹是一种细胞外矩阵蛋白质,由中线来表达.
- 在Slit的突变导致生长进入,但没有退出中线,持续Robo表达.
- 裂对于肌肉前体迁移远离中线至关重要.
结论:
- 裂纹既可以作为中线轴突交叉的短距离排斥剂,也可以作为中皮层迁移的长距离化学排斥剂.
- 裂-机器人通路对于建立神经元和中皮层模式至关重要.
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