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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Glycine-induced long-term potentiation is associated with structural and functional modifications of α-amino-3-hydroxyl-5- methyl-4-isoxazolepropionic acid receptors
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Glycine-induced long-term potentiation is associated with structural and functional modifications of α-amino-3-hydroxyl-5- methyl-4-isoxazolepropionic acid receptors

机译:甘氨酸诱导的长期增强与α-氨基-3-羟基-5-甲基-4-异恶唑丙酸受体的结构和功能修饰有关

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摘要

Global long-term potentiation (LTP) was induced in organotypic hippocampal slice cultures by a brief application of 10 mM glycine. Glycine-induced LTP was occluded by previous theta burst stimulation-induced poten- tiation, indicating that both phenomena share similar cellular processes. Glycine-induced LTP was associated with increased [~3H]α -amino-3-hydroxyl-5-methyl-4-isoxazolepropionic acid (AMPA) binding in membrane fractions as well as increased amount of a selective spectrin breakdown product generated by calpain-mediated spectrin proteolysis. Antibodies against the C-terminal (C-Ab) and N-terminal (N-Ab) domains of GluR1 subunits were used to evaluate structural changes in AMPA receptor properties resulting from glycine-induced LTP.
机译:通过短暂应用10 mM甘氨酸在器官型海马切片培养物中诱导总体长期增强(LTP)。甘氨酸诱导的LTP被先前的theta猝发刺激诱导的增效作用所封闭,表明这两种现象共有相似的细胞过程。甘氨酸诱导的LTP与膜级分中增加的[〜3H]α-氨基-3-羟基-5-甲基-4-异恶唑丙酸(AMPA)结合以及钙蛋白酶-产生的选择性血影蛋白分解产物的量增加有关。介导的血影蛋白水解。针对GluR1亚基的C末端(C-Ab)和N末端(N-Ab)域的抗体用于评估由甘氨酸诱导的LTP引起的AMPA受体特性的结构变化。

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