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首页> 外文期刊>Neuron >Fear Memory Formation Involves p190 RhoGAP and ROCK Proteins through a GRB2-Mediated Complex.
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Fear Memory Formation Involves p190 RhoGAP and ROCK Proteins through a GRB2-Mediated Complex.

机译:恐惧记忆形成通过GRB2介导的复合体涉及p190 RhoGAP和ROCK蛋白。

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摘要

We used fear conditioning, which is known to alter synaptic efficacy in lateral amygdala (LA), to study molecular mechanisms underlying long-term memory. Following fear conditioning, the tyrosine phosphorylated protein p190 RhoGAP becomes associated with GRB2 in LA significantly more in conditioned than in control rats. RasGAP and Shc were also found to associate with GRB2 in LA significantly more in the conditioned animals. Inhibition of the p190 RhoGAP-downstream kinase ROCK in LA during fear conditioning impaired long- but not short-term memory. Thus, the p190 RhoGAP/ROCK pathway, which regulates the morphology of dendrites and axons during neural development, plays a central role, through a GRB2-mediated molecular complex, in fear memory formation in the lateral amygdala.
机译:我们使用恐惧调节来研究长期记忆的分子机制,恐惧调节可以改变外侧杏仁核(LA)的突触功效。在恐惧条件下,酪氨酸磷酸化蛋白p190 RhoGAP在条件条件下的LA中与GRB2的关系要明显多​​于对照大鼠。在条件动物中,还发现RasGAP和Shc与LA中GRB2的关联明显更多。在恐惧调节期间,LA中p190 RhoGAP下游激酶ROCK的抑制会损害长期记忆,而不是短期记忆。因此,在神经发育过程中调节树突和轴突的形态的p190 RhoGAP / ROCK途径,通过GRB2介导的分子复合物,在外侧杏仁核的恐惧记忆形成中起着核心作用。

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