| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Research Abstract |
Although it was demonstrated that the delta2 glutamate receptor (GluD2) played crucial roles in synapse formation/maintenance and synaptic plasticity through interactions with Cbln1, function of GluD1 remains still elusive. Using GluD1-null mice, we investigated electrophysiological characteristics of the hippocampal CA1 neuron synapses in stratum lacunosum-moleculare where the entorhinal cortical neurons directly project. We found that GluD1 was critically involved in tuning NMDA/AMPA ratio and the threshold of synaptic plasticity. Furthermore, GluD1-null mice showed impairment in trace fear conditioning in which synaptic transmission in the stratum lacunosum-moleculare of the CA1 region is essential. It should be noted that this study, for the first time, revealed biological function of GluD1 in synaptic plasticity.
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