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首页> 外文期刊>Neuron >Calcium-stimulated adenylyl cyclase activity is critical for hippocampus-dependent long-term memory and late phase LTP.
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Calcium-stimulated adenylyl cyclase activity is critical for hippocampus-dependent long-term memory and late phase LTP.

机译:钙刺激的腺苷酸环化酶活性对于海马依赖性长期记忆和晚期LTP至关重要。

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摘要

It is hypothesized that Ca2+ stimulation of calmodulin (CaM)-activated adenylyl cyclases (AC1 or AC8) generates cAMP signals critical for late phase LTP (L-LTP) and long-term memory (LTM). However, mice lacking either AC1 or AC8 exhibit normal L-LTP and LTM. Here, we report that mice lacking both enzymes (DKO) do not exhibit L-LTP or LTM. To determine if these defects are due to a loss of cAMP increases in the hippocampus, DKO mice were unilaterally cannulated to deliver forskolin. Administration of forskolin to area CA1 before training restored normal LTM. We conclude that Ca2+-stimulated adenylyl cyclase activity is essential for L-LTP and LTM and that AC1 or AC8 can produce the necessary cAMP signal.
机译:假设钙调素(CaM)激活的腺苷酸环化酶(AC1或AC8)的Ca2 +刺激产生对后期LTP(L-LTP)和长期记忆(LTM)至关重要的cAMP信号。但是,缺少AC1或AC8的小鼠表现出正常的L-LTP和LTM。在这里,我们报告缺少两种酶(DKO)的小鼠不表现出L-LTP或LTM。为了确定这些缺陷是否是由于海马中cAMP增加的丧失所致,将DKO小鼠单侧插管以递送毛喉素。训练前将毛喉素施用于CA1区域可恢复正常LTM。我们得出结论,Ca2 +刺激的腺苷酸环化酶活性对于L-LTP和LTM至关重要,并且AC1或AC8可以产生必要的cAMP信号。

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