基础医学与临床 ›› 2008, Vol. 28 ›› Issue (5): 419-422.

• 研究论文 • 上一篇    下一篇

RYK在小鼠皮质脊髓束神经通路发育过程中的表达变化

梁天凤 李昕 李尧华 于顺 刘耀波   

  1. 中国科学院研究生院 北京宣武医院老年医学研究所神经生物学研究室 首都医科大学宣武医院神经生物室 首都医科大学宣武医院低氧医学研究所
  • 收稿日期:2007-04-12 修回日期:2005-05-29 出版日期:2008-05-25 发布日期:2008-05-25
  • 通讯作者: 刘耀波

RYK expression changes during the developmental projection of corticospinal tract pathway in mice

Tian-feng LIANG, Xin LI, Yao-hua LI, Shun YU, Yao-bo LIU   

  1. Graduate School, Chinese Acadency of Sciences Institute for Hypoxia Medicine,uanwu Hospital of the Capital Medical University
  • Received:2007-04-12 Revised:2005-05-29 Online:2008-05-25 Published:2008-05-25
  • Contact: Yao-bo LIU

摘要: 目的 观察RYK在皮质脊髓束发育投射通路中的表达情况,为进一步研究RYK在其中的功能提供重要线索。 方法 通过原位杂交和免疫荧光组织化学法,分别检测了E14.5、 E16 、E18.5和出生后 P3、 P5、P7等不同时间点RYK 在小鼠大脑运动皮层和皮质脊髓束神经通路中的表达情况。结果RYK的表达出现在胚胎E18.5 d运动皮层神经元中,到P0时逐渐增强并表达在脑内投射的皮质脊髓束神经通路,从P0~P5, RYK持续表达在皮质脊髓束在脑内和脊髓的整个神经通路上,而后逐渐减弱。结论 RYK的表达与皮质脊髓束神经通路在脊髓中的发育投射有密切关系。

关键词: 皮质脊髓束, Ryk, 表达, 投射

Abstract: Objective To study the expression pattern of RYK in the pathway of developmental corticospinal tract projection and provide hints for further study on RYK's function involved in this processes. Method By In situ and immuno- fluorescence histochemistry, we thoroughly checked the RYK expression pattern in the developmental mice motor cortex and the projection of corticospinal tract at various time points of E14.5、 E16 、E18.5 and postnatal P3、 P5、P7. Results We found in the motor cortex the RYK expression started at E18.5 stage and enhanced gradually at P0 stage. Moreover from P0 to P5 stage the RYK expression also appeared in the pathway of developmental corticospinal tract and decreased gradually after that. Conclusion RYK's expression is closely related to the corticospinal tract projection during the development stage.

Key words: Corticospinal Tract, Ryk, Expression, Projection