mRNA translation in astrocytes controls hippocampal long-term synaptic plasticity and memory.

mRNA translation in astrocytes controls hippocampal long-term synaptic plasticity and memory.
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星形胶质细胞中的 mRNA 翻译控制着海马的长期突触可塑性和记忆。

DOI:
10.1073/pnas.2308671120
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发表时间:
2023
影响因子:
11.1
通讯作者:
Kaufman,
Kaufman,
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Sharma,Vijendra;Oliveira,MauricioM;Sood,Rapita;Khlaifia,Abdessattar;Lou,Danning;Hooshmandi,Mehdi;Hung,Tzu-Yu;Mahmood,Niaz;Reeves,Maya;Ho-Tieng,David;Cohen,Noah;Cheng,Po-Chieh;Rahim,MirMunirA;Prager-Khoutorsky,Masha;Kaufman,

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Activation of neuronal protein synthesis upon learning is critical for the formation of long-term memory. Here, we report that learning in the contextual fear conditioning paradigm engenders a decrease in eIF2α (eukaryotic translation initiation factor 2) phosphorylation in astrocytes in the hippocampal CA1 region, which promotes protein synthesis. Genetic reduction of eIF2α phosphorylation in hippocampal astrocytes enhanced contextual and spatial memory and lowered the threshold for the induction of long-lasting plasticity by modulating synaptic transmission. Thus, learning-induced dephosphorylation of eIF2α in astrocytes bolsters hippocampal synaptic plasticity and consolidation of long-term memories.
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