Modulation of dendritic spines by protein phosphatase-1.

Modulation of dendritic spines by protein phosphatase-1.
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DOI:
10.1016/bs.apha.2020.10.001
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发表时间:
2021
期刊:
Advances in pharmacology (San Diego, Calif.)
影响因子:
--
通讯作者:
Hemmings HC Jr
Hemmings HC Jr
中科院分区:
其他
文献类型:
--
作者:
Platholi J;Hemmings HC Jr

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蛋白磷酸酶-1 (PP-1) 是一种高度保守的多功能丝氨酸/苏氨酸磷酸酶,富含于树突棘中,在调节兴奋性突触活动中发挥重要作用。除了脊柱成熟和发育中的既定功能外,PP-1 的多亚基全酶形式还调节学习和记忆等高级认知功能。调节 PP-1 活性和棘定位的机制包括与神经蛋白和亲旋蛋白的相互作用,这些蛋白是与肌动蛋白细胞骨架相关的结构相关的突触支架蛋白。由于 PP-1 是突触发育、信号传导和可塑性中的关键元件,因此树突棘中 PP-1 信号传导的改变与各种神经和精神疾病有关。 PP-1 的作用取决于其与调节蛋白的异构体特异性关联以及下游信号通路的激活。在这里,我们回顾了 PP-1 及其结合蛋白神经蛋白和亲旋蛋白在树突棘发育和建立中的作用,以及由于其失调而导致的一些疾病。
Protein phosphatase-1 (PP-1), a highly conserved multifunctional serine/threonine phosphatase, is enriched in dendritic spines where it plays a major role in modulating excitatory synaptic activity. In addition to established functions in spine maturation and development, multi-subunit holoenzyme forms of PP-1 modulate higher-order cognitive functions such learning and memory. Mechanisms involved in regulating PP-1 activity and localization in spines include interactions with neurabin and spinophilin, structurally related synaptic scaffolding proteins associated with the actin cytoskeleton. Since PP-1 is a critical element in synaptic development, signaling, and plasticity, alterations in PP-1 signaling in dendritic spines are implicated in various neurological and psychiatric disorders. The effects of PP-1 depend on its isoform-specific association with regulatory proteins and activation of downstream signaling pathways. Here we review the role of PP-1 and its binding proteins neurabin and spinophilin in both developing and established dendritic spines, as well as some of the disorders that result from its dysregulation.
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