LTD-like molecular pathways in developmental synaptic pruning.

LTD-like molecular pathways in developmental synaptic pruning.
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DOI:
10.1038/nn.4389
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发表时间:
2016-09-27
影响因子:
25
通讯作者:
Hansel, Christian
Hansel, Christian
中科院分区:
医学1区
文献类型:
--
作者:
Piochon, Claire;Kano, Masanobu;Hansel, Christian

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在成年人大脑突触的长期抑制(LTD)中,突触强度以经验依赖的方式降低。因此,有限责任公司提供了一种细胞机制,在某些形式的学习信息存储。在发育中的大脑中,突触强度也发生类似的活动依赖性降低,这为突触修剪和神经回路的出生后发育提供了必要的步骤。在这里,我们回顾的证据表明,LTD和突触修剪共享其潜在的分子机制的组成部分,因此可能代表两个发展阶段的相同类型的突触调制服务不同的,但相关的,在神经回路可塑性的功能。我们还评估了LTD和突触修剪的背景下,最近发现的LTD失调的自闭症谱系障碍(ASD)的几个小鼠模型,并讨论LTD赤字是否可以表明受损的修剪过程,需要适当的大脑发育的关系。
In long-term depression (LTD) at synapses in the adult brain, synaptic strength is reduced in an experience-dependent manner. LTD thus provides a cellular mechanism for information storage in some forms of learning. A similar activity-dependent reduction in synaptic strength also occurs in the developing brain and there provides an essential step in synaptic pruning and the postnatal development of neural circuits. Here we review evidence suggesting that LTD and synaptic pruning share components of their underlying molecular machinery and may thus represent two developmental stages of the same type of synaptic modulation that serve different, but related, functions in neural circuit plasticity. We also assess the relationship between LTD and synaptic pruning in the context of recent findings of LTD dysregulation in several mouse models of autism spectrum disorder (ASD) and discuss whether LTD deficits can indicate impaired pruning processes that are required for proper brain development.
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