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Brief Communication

Nature Neuroscience 9, 602–604 (1 May 2006) | doi:10.1038/nn1678

Transient incorporation of native GluR2-lacking AMPA receptors during hippocampal long-term potentiation

Karen Plant , Kenneth A Pelkey , Zuner A Bortolotto , Daiju Morita , Akira Terashima , Chris J McBain , Graham L Collingridge & John T R Isaac

Postnatal glutamatergic principal neuron synapses are typically presumed to express only calcium-impermeable (CI), GluR2-containing AMPARs under physiological conditions. Here, however, we demonstrate that long-term potentiation (LTP) in CA1 hippocampal pyramidal neurons causes rapid incorporation of GluR2-lacking calcium-permeable (CP)-AMPARs: CP-AMPARs are present transiently, being replaced by GluR2-containing AMPARs |[sim]|25 min after LTP induction.