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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >A homeodomain gene Ptx3 has highly restricted brain expression in mesencephalic dopaminergic neurons
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A homeodomain gene Ptx3 has highly restricted brain expression in mesencephalic dopaminergic neurons

机译:同源域基因Ptx3在中脑多巴胺能神经元中的大脑表达受到高度限制

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摘要

The mesencephalic dopaminergic (mesDA) system regulates behavior and movement control and has been implicated in psychiatric and affective disorders. We have identified a bicoid-related homeobox gene, Ptx3, a member of the Ptx-subfamily, that is uniquely expressed in these neurons. Its expression starting at E11.5 in the developing mouse midbrain correlates with the appearance of mesDA neurons. The number of Ptx3-expressing neurons is reduced in Parkin- son patients, and these neurons are absent from 6-hydroxy- dopamine-lesioned rats, an animal model for this disease. Thus, Ptx3 is a unique transcription factor marking the mesDA neurons at the exclusion of other dopaminergic neu- rons, and it may be involved in developmental determination of this neuronal lineage.
机译:中脑多巴胺能(mesDA)系统调节行为和运动控制,并与精神病和情感障碍有关。我们已经确定了与二倍体相关的同源盒基因,Ptx3,Ptx亚家族的成员,在这些神经元中唯一表达。它在发育中的小鼠中脑中从E11.5开始的表达与mesDA神经元的出现有关。在帕金森病患者中,表达Ptx3的神经元数量减少,而6-羟基多巴胺损伤的大鼠(这种疾病的动物模型)不存在这些神经元。因此,Ptx3是在排除其他多巴胺能神经元时标记mesDA神经元的独特转录因子,并且可能参与了该神经元谱系的发育测定。

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