PMID- 23554492 OWN - NLM STAT- MEDLINE DCOM- 20130528 LR - 20211021 IS - 1529-2401 (Electronic) IS - 0270-6474 (Print) IS - 0270-6474 (Linking) VI - 33 IP - 14 DP - 2013 Apr 3 TI - BDNF regulates Rab11-mediated recycling endosome dynamics to induce dendritic branching. PG - 6112-22 LID - 10.1523/JNEUROSCI.4630-12.2013 [doi] AB - Dendritic arborization of neurons is regulated by brain-derived neurotrophic factor (BDNF) together with its receptor, TrkB. Endocytosis is required for dendritic branching and regulates TrkB signaling, but how postendocytic trafficking determines the neuronal response to BDNF is not well understood. The monomeric GTPase Rab11 regulates the dynamics of recycling endosomes and local delivery of receptors to specific dendritic compartments. We investigated whether Rab11-dependent trafficking of TrkB in dendrites regulates BDNF-induced dendritic branching in rat hippocampal neurons. We report that TrkB in dendrites is a cargo for Rab11 endosomes and that both Rab11 and its effector, MyoVb, are required for BDNF/TrkB-induced dendritic branching. In addition, BDNF induces the accumulation of Rab11-positive endosomes and GTP-bound Rab11 in dendrites and the expression of a constitutively active mutant of Rab11 is sufficient to increase dendritic branching by increasing TrkB localization in dendrites and enhancing sensitization to endogenous BDNF. We propose that Rab11-dependent dendritic recycling provides a mechanism to retain TrkB in dendrites and to increase local signaling to regulate arborization. FAU - Lazo, Oscar M AU - Lazo OM AD - Neuronal Cell Biology and Regeneration Laboratory, Millennium Nucleus of Regenerative Biology, Center of Aging and Regeneration, Departamento de Fisiologia, Facultad de Ciencias Biologicas, Pontificia Universidad Catolica de Chile, Santiago CP 8331010, Chile. FAU - Gonzalez, Andres AU - Gonzalez A FAU - Ascano, Maria AU - Ascano M FAU - Kuruvilla, Rejji AU - Kuruvilla R FAU - Couve, Andres AU - Couve A FAU - Bronfman, Francisca C AU - Bronfman FC LA - eng GR - R01 MH080738/MH/NIMH NIH HHS/United States GR - R01 NS073751/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural 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 (Antibodies) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Bridged Bicyclo Compounds, Heterocyclic) RN - 0 (Carbazoles) RN - 0 (Enzyme Inhibitors) RN - 0 (Indole Alkaloids) RN - 0 (MAP2 protein, rat) RN - 0 (Microtubule-Associated Proteins) RN - 0 (Myo5b protein, rat) RN - 0 (RNA, Small Interfering) RN - 0 (Thiazolidines) RN - 0 (Wdr44 protein, rat) RN - 0 (enhanced green fluorescent protein) RN - 147336-22-9 (Green Fluorescent Proteins) RN - 86-01-1 (Guanosine Triphosphate) RN - 97161-97-2 (staurosporine aglycone) RN - EC 2.7.10.1 (Receptor, trkB) RN - EC 3.6.1.- (GTP-Binding Proteins) RN - EC 3.6.4.1 (Myosins) RN - SRQ9WWM084 (latrunculin A) SB - IM MH - Analysis of Variance MH - Animals MH - Antibodies/pharmacology MH - Brain-Derived Neurotrophic Factor/*pharmacology MH - Bridged Bicyclo Compounds, Heterocyclic/pharmacology MH - Carbazoles/pharmacology MH - Cells, Cultured MH - Dendrites/*drug effects/physiology/ultrastructure MH - Embryo, Mammalian MH - Endocytosis/drug effects MH - Endosomes/*drug effects/ultrastructure MH - Enzyme Inhibitors/pharmacology MH - Female MH - GTP-Binding Proteins/genetics/immunology/*metabolism MH - Gene Expression Regulation/drug effects/genetics MH - Green Fluorescent Proteins/genetics/metabolism MH - Guanosine Triphosphate/metabolism MH - Hippocampus/cytology MH - Indole Alkaloids/pharmacology MH - Male MH - Microscopy, Confocal MH - Microtubule-Associated Proteins/metabolism MH - Mutation/genetics MH - Myosins/metabolism MH - Neurons/*cytology/drug effects MH - RNA, Small Interfering/pharmacology MH - Rats MH - Receptor, trkB/metabolism MH - Thiazolidines/pharmacology MH - Transfection PMC - PMC3684039 MID - NIHMS463472 EDAT- 2013/04/05 06:00 MHDA- 2013/05/29 06:00 PMCR- 2013/10/03 CRDT- 2013/04/05 06:00 PHST- 2013/04/05 06:00 [entrez] PHST- 2013/04/05 06:00 [pubmed] PHST- 2013/05/29 06:00 [medline] PHST- 2013/10/03 00:00 [pmc-release] AID - 33/14/6112 [pii] AID - 3829737 [pii] AID - 10.1523/JNEUROSCI.4630-12.2013 [doi] PST - ppublish SO - J Neurosci. 2013 Apr 3;33(14):6112-22. doi: 10.1523/JNEUROSCI.4630-12.2013.