Memory Erasure Experiments Indicate a Critical Role of CaMKII in Memory Storage.
Memory Erasure Experiments Indicate a Critical Role of CaMKII in Memory Storage.
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DOI:
10.1016/j.neuron.2017.09.010
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发表时间:
2017-09-27
期刊:
影响因子:
16.2
通讯作者:
Lisman J
中科院分区:
文献类型:
--
作者:
Rossetti T;Banerjee S;Kim C;Leubner M;Lamar C;Gupta P;Lee B;Neve R;Lisman J
The abundant synaptic protein, CaMKII, is necessary for long-term potentiation (LTP) and memory. However, whether CaMKII is required only during initial processes or whether it also mediates memory storage remains unclear. The most direct test of a storage role is the erasure test. In this test, a putative memory molecule is transiently inhibited after learning. The key prediction is that this should produce persistent memory erasure. We conducted this test using transient viral (HSV) expression of dominant-negative CaMKII-alpha (K42M) in the hippocampus. This produced persistent erasure of conditioned place avoidance. As an additional test, we found that expression of activated CaMKII (T286D/T305A/T306A) impaired place avoidance, a result not expected if a process other than CaMKII stores memory. Our behavioral results, taken together with prior experiments on LTP, strongly support a critical role of CaMKII in LTP maintenance and memory storage. Rossetti et al. used a dominant-negative form of CaMKII to erase a hippocampal-dependent behavioral memory. Taken together with other results, the new findings make the strong case that memory storage is mediated by CaMKII.
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发表时间:
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影响因子:
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