Motor skill learning requires active central myelination.

Motor skill learning requires active central myelination.
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运动技能学习需要主动的中央髓鞘化。

DOI:
10.1126/science.1254960
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发表时间:
2014-10-17
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Richardson WD
Richardson WD
中科院分区:
其他
文献类型:
--
作者:
McKenzie IA;Ohayon D;Li H;de Faria JP;Emery B;Tohyama K;Richardson WD

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髓鞘形成性少突胶质细胞(OL)在健康成人脑中连续形成。在这项工作中,我们研究了这些晚期形成细胞的功能和它们产生的髓鞘。学习一种新的运动技能(如杂耍)会改变大脑白色物质的结构,其中包含许多OL,这表明晚出生的OL可能有助于运动学习。与这个想法一致,我们发现,在学习新技能(在具有不规则间隔梯级的“复杂轮”上跑步)的小鼠中,新形成的OL的产生短暂加速。通过遗传操纵转录因子髓鞘调节因子在OL前体,我们阻止了新的OL在成年期的生产,而不影响既存的OL或髓鞘。这阻止了小鼠掌握复杂的轮子。因此,新OL和髓磷脂的产生对于学习运动技能是重要的。
Myelin-forming oligodendrocytes (OLs) are formed continuously in the healthy adult brain. In this work, we study the function of these late-forming cells and the myelin they produce. Learning a new motor skill (such as juggling) alters the structure of the brain’s white matter, which contains many OLs, suggesting that late-born OLs might contribute to motor learning. Consistent with this idea, we show that production of newly formed OLs is briefly accelerated in mice that learn a new skill (running on a “complex wheel” with irregularly spaced rungs). By genetically manipulating the transcription factor myelin regulatory factor in OL precursors, we blocked production of new OLs during adulthood without affecting preexisting OLs or myelin. This prevented the mice from mastering the complex wheel. Thus, generation of new OLs and myelin is important for learning motor skills.
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