PMID- 16904263 OWN - NLM STAT- MEDLINE DCOM- 20061103 LR - 20181201 IS - 0304-3940 (Print) IS - 0304-3940 (Linking) VI - 406 IP - 1-2 DP - 2006 Oct 2 TI - Possible involvement of BDNF release in long-lasting synapse formation induced by repetitive PKA activation. PG - 38-42 AB - For the analysis of the cellular mechanism underlying long-term synaptic plasticity, a model system that allows long-lasting pursuit is required. Previously we reported that, in hippocampal neurons under dissociated cell culture conditions, repeated (but not a single) transient activation of protein kinase A (PKA) led to an increase in the number of synapses that lasted >3 weeks, and hence we proposed that this phenomenon should serve as an appropriate model system. Here we report that repeated pulsatile application of brain-derived neurotrophic factor (BDNF) leads to persistent synapse formation equivalent to that after the repeated transient activation of PKA. A BDNF-scavenging substance applied concomitantly with PKA activation abolished the synapse formation. The release of BDNF upon PKA activation was confirmed by phosphorylation of TrkB. These results indicate that the release of BDNF is involved in the putative signaling cascade connecting PKA activation and synapse formation. FAU - Taniguchi, Naoko AU - Taniguchi N AD - Department of Neuroscience, Osaka University Graduate School of Frontier Biosciences, Machikaneyama-cho 1-1, Toyonaka, Osaka 560-0043, Japan. FAU - Shinoda, Yo AU - Shinoda Y FAU - Takei, Nobuyuki AU - Takei N FAU - Nawa, Hiroyuki AU - Nawa H FAU - Ogura, Akihiko AU - Ogura A FAU - Tominaga-Yoshino, Keiko AU - Tominaga-Yoshino K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060809 PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Biomarkers) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Disks Large Homolog 4 Protein) RN - 0 (Dlg4 protein, rat) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (Membrane Proteins) RN - 0 (Synaptophysin) RN - 0 (Thionucleotides) RN - 23645-17-2 (adenosine-3',5'-cyclic phosphorothioate) RN - E0399OZS9N (Cyclic AMP) RN - EC 2.7.10.1 (Receptor, trkB) RN - EC 2.7.11.11 (Cyclic AMP-Dependent Protein Kinases) SB - IM MH - Animals MH - Biomarkers/metabolism MH - Brain-Derived Neurotrophic Factor/*metabolism/pharmacology MH - Cell Differentiation/drug effects/physiology MH - Cells, Cultured MH - Cyclic AMP/analogs & derivatives/metabolism/pharmacology MH - Cyclic AMP-Dependent Protein Kinases/drug effects/*metabolism MH - Disks Large Homolog 4 Protein MH - Enzyme Activation/drug effects/physiology MH - Hippocampus/cytology/*metabolism MH - Intracellular Signaling Peptides and Proteins/metabolism MH - Membrane Proteins/metabolism MH - Neural Pathways/cytology/drug effects/*metabolism MH - Neuronal Plasticity/drug effects/*physiology MH - Phosphorylation/drug effects MH - Presynaptic Terminals/drug effects/metabolism/ultrastructure MH - Rats MH - Rats, Wistar MH - Receptor, trkB/metabolism MH - Synapses/drug effects/*metabolism/ultrastructure MH - Synaptophysin/metabolism MH - Thionucleotides/pharmacology EDAT- 2006/08/15 09:00 MHDA- 2006/11/04 09:00 CRDT- 2006/08/15 09:00 PHST- 2006/05/20 00:00 [received] PHST- 2006/06/22 00:00 [revised] PHST- 2006/06/25 00:00 [accepted] PHST- 2006/08/15 09:00 [pubmed] PHST- 2006/11/04 09:00 [medline] PHST- 2006/08/15 09:00 [entrez] AID - S0304-3940(06)00638-0 [pii] AID - 10.1016/j.neulet.2006.06.071 [doi] PST - ppublish SO - Neurosci Lett. 2006 Oct 2;406(1-2):38-42. doi: 10.1016/j.neulet.2006.06.071. Epub 2006 Aug 9.