nov基因的表达与脑的种系发育分化平行相关

用地高辛标记的cRNA探针原位杂交组织化学方法研究了鲢、鸡、牛、犬和猫脑肾母细胞瘤过度表达基因阳性神经元的比较发育。结果显示 ,低等脊椎动物鲢脑仅有少量novmRNA阳性神经元 ,分布于延髓的迷走神经背核、三叉神经背核、丘脑前核、丘脑后核、下丘脑背侧核、下丘脑外侧核。鸡脑阳性神经元除广泛分布于脑干外 ,小脑、丘脑的多数核团、下丘脑的背侧核、腹侧核和后核以及大脑纹状体等多数脑区也有一定分布。哺乳动物牛、犬和猫脑中novmRNA阳性神经元广泛分布 ,在脑干、小脑、间脑和大脑都检测到强烈阳性信号。以上结果表明 ,在从低等脊椎动物到高等脊椎动物的进化过程中nov基因的表达也从低级中枢向高级中枢扩展 ,提示该基因的表达与脑的种系发育、脑功能的分化平行相关。

The Expresion of Quox-1 Gene in the Embryo Development of Andrias davianus

Using human nov (nephroblastoma overexpressed,nov) DNA as probe,hybridization to total cellular DNAs of tumor and normal cells digested by restriction enzymes BamHI or EcoRI respectively was carried out through Southern blot. It was observed that nov gene in these cells is not only highly conserved, but also certains RFLP characteristic . The correlation between RFLP characteristic of nov gene and its function was analyzed .