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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Integrin-driven actin polymerization consolidates long-term potentiation
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Integrin-driven actin polymerization consolidates long-term potentiation

机译:整合素驱动的肌动蛋白聚合可巩固长期增效作用

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摘要

Long-term potentiation (LTP), like memory, becomes progressively more resistant to disruption with time after its formation. Here we show that threshold conditions for inducing LTP cause a rapid, long-lasting increase in polymerized filamentous actin in dendritic spines of adult hippocampus. Two independent manipulations that reverse LTP disrupted this effect when applied shortly after induction but not 30 min later. Function-blocking antibodies to 131 family integrins selectively eliminated both actin polymerization and stabilization of LTP. We propose that the initial stages of consolidation involve integrin-driven events common to cells engaged in activities that require rapid morphological changes.
机译:像记忆一样,长期增强(LTP)在形成后会随着时间的推移逐渐变得更能抵抗破坏。在这里,我们显示诱导LTP的阈值条件会导致成年海马树突棘中聚合的丝状肌动蛋白迅速,持久地增加。当诱导后不久但不是30分钟后应用两种逆转LTP的独立操作破坏了该效果。针对131家族整合素的功能阻断抗体选择性消除了肌动蛋白聚合和LTP的稳定。我们建议整合的初始阶段涉及整联蛋白驱动的事件,这些事件是参与需要快速形态变化的活动的细胞所共有的。

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