Fatty-acid binding proteins modulate sleep and enhance long-term memory consolidation in Drosophila.

Fatty-acid binding proteins modulate sleep and enhance long-term memory consolidation in Drosophila.
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DOI:
10.1371/journal.pone.0015890
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发表时间:
2011-01-27
期刊:
影响因子:
3.7
通讯作者:
Yin JC
Yin JC
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Gerstner JR;Vanderheyden WM;Shaw PJ;Landry CF;Yin JC

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睡眠被认为对记忆的巩固很重要,因为睡眠不足已经被证明会干扰记忆的处理。然而,增加睡眠对记忆形成的影响并不为人所知,并且测试睡眠在记忆增强中的作用仅限于药理学和行为学方法。在这里,我们测试过表达的脑型脂肪酸结合蛋白(Fabp7)对睡眠和长期记忆(LTM)的形成在果蝇的影响。携带鼠Fabp7或果蝇同源物dFabp的转基因果蝇的基线睡眠减少,但正常的LTM,而Fabp诱导产生的净睡眠和LTM增加。我们还定义了一个训练后巩固的“窗口”,这是足够的观察到的Fabp介导的记忆增强。由于Fabp过表达增加了巩固的白天睡眠发作,这些数据支持更长的午睡在改善记忆中的作用,并提供了一个新的作用,脂质结合蛋白在调节记忆巩固同时改变行为状态。
Sleep is thought to be important for memory consolidation, since sleep deprivation has been shown to interfere with memory processing. However, the effects of augmenting sleep on memory formation are not well known, and testing the role of sleep in memory enhancement has been limited to pharmacological and behavioral approaches. Here we test the effect of overexpressing the brain-type fatty acid binding protein (Fabp7) on sleep and long-term memory (LTM) formation in Drosophila melanogaster. Transgenic flies carrying the murine Fabp7 or the Drosophila homologue dFabp had reduced baseline sleep but normal LTM, while Fabp induction produced increases in both net sleep and LTM. We also define a post-training consolidation “window” that is sufficient for the observed Fabp-mediated memory enhancement. Since Fabp overexpression increases consolidated daytime sleep bouts, these data support a role for longer naps in improving memory and provide a novel role for lipid-binding proteins in regulating memory consolidation concurrently with changes in behavioral state.
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