Wnt-Frizzled Signaling Regulates Activity-Mediated Synapse Formation.

Wnt-Frizzled Signaling Regulates Activity-Mediated Synapse Formation.
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WNT爆发的信号传导调节活动介导的突触形成。

DOI:
10.3389/fnmol.2021.683035
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发表时间:
2021
影响因子:
4.8
通讯作者:
Salinas PC
Salinas PC
中科院分区:
医学2区
文献类型:
--
作者:
Teo S;Salinas PC

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突触的形成是一个严格调控的过程,需要突触前侧和突触后侧的协调组装。发育过程中或成人中突触发生的缺陷可导致神经发育障碍、神经系统疾病和神经退行性疾病。为了开发治疗这些神经系统疾病的方法,我们必须首先了解调节突触形成的分子机制。在从无脊椎动物到哺乳动物的不同模型系统中,Wnt家族分泌的糖蛋白是突触形成的关键调节因子。在这篇综述中,我们将讨论Wnt信号在哺乳动物大脑兴奋性突触形成中的作用,重点关注Wnt7a和Wnt5a,这两个Wnt配体在这一过程中发挥体内作用。我们还将讨论神经元活动的变化如何调节Wnt的表达和/或释放,从而导致突触中关键Wnt受体frizzed表面水平的变化。因此,神经元活动的变化影响Wnt信号的大小,这反过来又有助于活动介导的突触形成。
The formation of synapses is a tightly regulated process that requires the coordinated assembly of the presynaptic and postsynaptic sides. Defects in synaptogenesis during development or in the adult can lead to neurodevelopmental disorders, neurological disorders, and neurodegenerative diseases. In order to develop therapeutic approaches for these neurological conditions, we must first understand the molecular mechanisms that regulate synapse formation. The Wnt family of secreted glycoproteins are key regulators of synapse formation in different model systems from invertebrates to mammals. In this review, we will discuss the role of Wnt signaling in the formation of excitatory synapses in the mammalian brain by focusing on Wnt7a and Wnt5a, two Wnt ligands that play an in vivo role in this process. We will also discuss how changes in neuronal activity modulate the expression and/or release of Wnts, resulting in changes in the localization of surface levels of Frizzled, key Wnt receptors, at the synapse. Thus, changes in neuronal activity influence the magnitude of Wnt signaling, which in turn contributes to activity-mediated synapse formation.
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