PMID- 23699532 OWN - NLM STAT- MEDLINE DCOM- 20130809 LR - 20211021 IS - 1529-2401 (Electronic) IS - 0270-6474 (Print) IS - 0270-6474 (Linking) VI - 33 IP - 21 DP - 2013 May 22 TI - BDNF-dependent recycling facilitates TrkB translocation to postsynaptic density during LTP via a Rab11-dependent pathway. PG - 9214-30 LID - 10.1523/JNEUROSCI.3256-12.2013 [doi] AB - Brain-derived neurotrophic factor (BDNF) plays an important role in the activity-dependent regulation of synaptic structure and function via tropomyosin related kinase B (TrkB) receptor activation. However, whether BDNF could regulate TrkB levels at synapse during long-term potentiation (LTP) is still unknown. We show in cultured rat hippocampal neurons that chemical LTP (cLTP) stimuli selectively promote endocytic recycling of BDNF-dependent full-length TrkB (TrkB-FL) receptors, but not isoform T1 (TrkB.T1) receptors, via a Rab11-dependent pathway. Moreover, neuronal-activity-enhanced TrkB-FL recycling could facilitate receptor translocation to postsynaptic density and enhance BDNF-induced extracellular signal-regulated kinase and phosphatidylinositol 3-kinase activation and rat hippocampal neuron survival. Finally, we found that cLTP could stimulate the switch of Rab11 from an inactive to an active form and that GTP-bound Rab11 could enhance the interaction between TrkB-FL and PSD-95. Therefore, the recycling endosome could serve as a reserve pool to supply TrkB-FL receptors for LTP maintenance. These findings provide a mechanistic link between Rab11-dependent endocytic recycling and TrkB modulation of synaptic plasticity. FAU - Huang, Shu-Hong AU - Huang SH AD - Department of Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Shandong University, Jinan, Shandong 250012, PR China. FAU - Wang, Jue AU - Wang J FAU - Sui, Wen-Hai AU - Sui WH FAU - Chen, Bing AU - Chen B FAU - Zhang, Xiao-Yan AU - Zhang XY FAU - Yan, Jing AU - Yan J FAU - Geng, Zhao AU - Geng Z FAU - Chen, Zhe-Yu AU - Chen ZY LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Neurosci JT - The Journal of neuroscience : the official journal of the Society for Neuroscience JID - 8102140 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Disks Large Homolog 4 Protein) RN - 0 (Dlg4 protein, rat) RN - 0 (Exoc6 protein, rat) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (Membrane Proteins) RN - EC 2.7.10.1 (Receptor, trkB) RN - EC 3.6.1.- (rab11 protein) RN - EC 3.6.5.2 (rab GTP-Binding Proteins) SB - IM MH - Analysis of Variance MH - Animals MH - Animals, Newborn MH - Biotinylation MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Disks Large Homolog 4 Protein MH - Electric Stimulation MH - Embryo, Mammalian MH - Female MH - Hippocampus/cytology MH - Immunoprecipitation MH - In Situ Nick-End Labeling MH - In Vitro Techniques MH - Intracellular Signaling Peptides and Proteins/metabolism MH - Long-Term Potentiation/drug effects/*physiology MH - Male MH - Membrane Proteins/metabolism MH - Neurons/*physiology/ultrastructure MH - Patch-Clamp Techniques MH - Post-Synaptic Density/genetics/*physiology MH - Protein Binding MH - Protein Transport/physiology MH - Rats MH - Rats, Sprague-Dawley MH - Receptor, trkB/*metabolism MH - Subcellular Fractions/metabolism MH - rab GTP-Binding Proteins/genetics/*metabolism PMC - PMC6705013 EDAT- 2013/05/24 06:00 MHDA- 2013/08/10 06:00 PMCR- 2013/11/22 CRDT- 2013/05/24 06:00 PHST- 2013/05/24 06:00 [entrez] PHST- 2013/05/24 06:00 [pubmed] PHST- 2013/08/10 06:00 [medline] PHST- 2013/11/22 00:00 [pmc-release] AID - 33/21/9214 [pii] AID - 3256-12 [pii] AID - 10.1523/JNEUROSCI.3256-12.2013 [doi] PST - ppublish SO - J Neurosci. 2013 May 22;33(21):9214-30. doi: 10.1523/JNEUROSCI.3256-12.2013.