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Nat Neurosci:CCK篮细胞异常扰乱空间信息编码

2017-04-08 zhangfan MedSci原创

皮层网络中的篮状细胞功能正常是支持海马空间编码能力的关键

皮层GABA能中间神经元的功能在很大程度上取决于能否融入特定的神经回路,但控制这些细胞回路的机制仍是未知的。

研究发现,表达神经肽胆囊收缩素(CCK)和囊泡谷氨酸转运体3(VGlut3)的篮状细胞正常融入皮层回路需要酪氨酸激酶受体ErbB4的参与。CCK、VGlut3和篮状细胞可形成抑制性突触树,但在缺乏ErbB4的情况下,其对小鼠锥体细胞的抑制驱动能力丧失。这些细胞连接的发育中断导致在探索行为中θ振荡频率降低,扰乱细胞的空间编码能力,最终导致成年小鼠的空间学习能力和记忆选择性发生改变。

结果表明,皮层网络中的篮状细胞功能正常是支持海马空间编码能力的关键。

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    2017-07-18 liye789132251
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    2017-04-09 lsndxfj
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