CREB antisense oligodeoxynucleotide administration into the dorsal hippocampal CA3 region impairs long- but not short-term spatial memory in mice.
The transcription factor cAMP response-element binding protein (CREB) has a pivotal role in hippocampal synaptic plasticity and hippocampus-dependent long-term memory. We recently demonstrated that the dorsal hippocampal CA3 region is involved in memory consolidation of spatial information tested on a Morris water maze in mice. To test whether activation of CREB in the CA3 region is required for memory consolidation of spatial information, bilaterally cannulated mice were infused 18 h before the beginning of the behavioral training with antisense or control sense CREB oligodeoxynucleotides (ODNs) or buffer. Mice were then subjected to massed training in a spatial version of the water maze and tested for retention 0 or 24 h after the last training session. We showed that CREB antisense ODN-infusion in the CA3 region impaired long-term memory when tested 24 h later but had no effect on spatial acquisition or short-term memory tested immediately after behavioral training. These findings provide evidence that the regionally restricted activation of CREB in the dorsal hippocampal CA3 region is critical for the long-term memory consolidation phase of spatial learning but not for short-term memory.
Florian
Cédrick
C
Centre de Recherches sur la Cognition Animale, Centre National de la Recherche Scientifique, Unité Mixte de Recherche, CNRS UMR, 5169, Université Paul Sabatier, 31062 Toulouse cedex 9, France.
Mons
Nicole
N
Roullet
Pascal
P
D000818:Animals; D017362:Cyclic AMP Response Element-Binding Protein / Q000235:genetics* / Q000502:physiology; D005260:Female; D006624:Hippocampus / Q000187:drug effects / Q000502:physiology*; D007150:Immunohistochemistry; D008297:Male; D008568:Memory / Q000187:drug effects / Q000502:physiology*; D008570:Memory, Short-Term / Q000502:physiology*; D051379:Mice; D008810:Mice, Inbred C57BL; D020319:Oligodeoxyribonucleotides, Antisense / Q000494:pharmacology*; D013028:Space Perception / Q000187:drug effects / Q000502:physiology*
C492004:Creb1 protein, mouse; D017362:Cyclic AMP Response Element-Binding Protein; D020319:Oligodeoxyribonucleotides, Antisense