PMID- 23639831 OWN - NLM STAT- MEDLINE DCOM- 20140620 LR - 20211021 IS - 1095-9327 (Electronic) IS - 1044-7431 (Print) IS - 1044-7431 (Linking) VI - 56 DP - 2013 Sep TI - Neurotrophin and Wnt signaling cooperatively regulate dendritic spine formation. PG - 115-27 LID - S1044-7431(13)00054-7 [pii] LID - 10.1016/j.mcn.2013.04.006 [doi] AB - Dendritic spines are major sites of excitatory synaptic transmission and changes in their numbers and morphology have been associated with neurodevelopmental and neurodegenerative disorders. Brain-derived Neurotrophic Factor (BDNF) is a secreted growth factor that influences hippocampal, striatal and neocortical pyramidal neuron dendritic spine density. However, the mechanisms by which BDNF regulates dendritic spines and how BDNF interacts with other regulators of spines remain unclear. We propose that one mechanism by which BDNF promotes dendritic spine formation is through an interaction with Wnt signaling. Here, we show that Wnt signaling inhibition in cultured cortical neurons disrupts dendritic spine development, reduces dendritic arbor size and complexity, and blocks BDNF-induced dendritic spine formation and maturation. Additionally, we show that BDNF regulates expression of Wnt2, and that Wnt2 is sufficient to promote cortical dendrite growth and dendritic spine formation. Together, these data suggest that BDNF and Wnt signaling cooperatively regulate dendritic spine formation. CI - Copyright (c) 2013 Elsevier Inc. All rights reserved. FAU - Hiester, Brian G AU - Hiester BG AD - Department of Molecular, Cellular and Developmental Biology, 347 UCB, University of Colorado, Boulder, CO 80309, United States. FAU - Galati, Domenico F AU - Galati DF FAU - Salinas, Patricia C AU - Salinas PC FAU - Jones, Kevin R AU - Jones KR LA - eng GR - G0802241/MRC_/Medical Research Council/United Kingdom GR - MR/J013374/1/MRC_/Medical Research Council/United Kingdom GR - R01 EY014998/EY/NEI NIH HHS/United States GR - R01 EY14998/EY/NEI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20130430 PL - United States TA - Mol Cell Neurosci JT - Molecular and cellular neurosciences JID - 9100095 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Wnt2 Protein) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/genetics/*metabolism MH - Cell Growth Processes MH - Cells, Cultured MH - Cerebral Cortex/cytology/metabolism MH - Dendritic Spines/*metabolism/physiology MH - Mice MH - *Wnt Signaling Pathway MH - Wnt2 Protein/genetics/metabolism PMC - PMC3793870 OTO - NOTNLM OT - BDNF OT - Dendrite branching OT - Dendritic spine OT - Synapse OT - Wnt signaling EDAT- 2013/05/04 06:00 MHDA- 2014/06/21 06:00 PMCR- 2013/09/01 CRDT- 2013/05/04 06:00 PHST- 2012/06/16 00:00 [received] PHST- 2013/04/20 00:00 [revised] PHST- 2013/04/23 00:00 [accepted] PHST- 2013/05/04 06:00 [entrez] PHST- 2013/05/04 06:00 [pubmed] PHST- 2014/06/21 06:00 [medline] PHST- 2013/09/01 00:00 [pmc-release] AID - S1044-7431(13)00054-7 [pii] AID - 10.1016/j.mcn.2013.04.006 [doi] PST - ppublish SO - Mol Cell Neurosci. 2013 Sep;56:115-27. doi: 10.1016/j.mcn.2013.04.006. Epub 2013 Apr 30.