Activation of CaMKII in single dendritic spines during long-term potentiation.
Activation of CaMKII in single dendritic spines during long-term potentiation.
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DOI:
10.1038/nature07842
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发表时间:
2009-03-19
期刊:
影响因子:
64.8
通讯作者:
Yasuda, Ryohei
中科院分区:
文献类型:
--
作者:
Lee, Seok-Jin R.;Escobedo-Lozoya, Yasmin;Szatmari, Erzsebet M.;Yasuda, Ryohei
Ca2+ / Calmodulin-dependent kinase II (CaMKII) plays a central role in long-term potentiation (LTP), which underlies some forms of learning and memory. Here we monitored the spatiotemporal dynamics of CaMKII activation in individual dendritic spines during LTP using 2-photon fluorescence lifetime imaging microscopy in combination with 2-photon glutamate uncaging. Induction of LTP and associated spine enlargement in single spines triggered transient (∼ 1 min) CaMKII activation restricted to the stimulated spines. CaMKII in spines was specifically activated by NMDA receptors and L-type voltage sensitive calcium channels, presumably via nanodomain Ca2+ near the channels, in response to glutamate uncaging and depolarization, respectively. The high degree of compartmentalization and channel specificity of CaMKII signalling allow stimuli-specific spatiotemporal patterns of CaMKII signalling and may be important for synapse-specificity of synaptic plasticity.
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影响因子:
7.8
作者:
Hudmon, A;Schulman, H;Kim, J;Maltez, JM;Tsien, RW;Pitt, GS
通讯作者:
Pitt, GS
DOI:
10.1016/j.bbrc.2008.02.070
发表时间:
2008-05-02
影响因子:
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作者:
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影响因子:
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通讯作者:
Miyawaki, A
影响因子:
5.5
作者:
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通讯作者:
JOHNSTON, D
DOI:
10.1073/pnas.0701656104
发表时间:
2007-04-10
影响因子:
11.1
作者:
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通讯作者:
Hayashi, Yasunori