Article (Scientific journals)
The GDNF-GFRα1 complex promotes the development of hippocampal dendritic arbors and spines via NCAM.
Irala, Dolores; Bonafina, Antonela; Fontanet, Paula Aldana et al.
2016In Development (Cambridge, England), 143 (22), p. 4224-4235
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Keywords :
GDNF; Hippocampus; neuronal plasticity
Abstract :
[en] The formation of synaptic connections during nervous system development requires the precise control of dendrite growth and synapse formation. Although glial cell line-derived neurotrophic factor (GDNF) and its receptor GFRα1 are expressed in the forebrain, the role of this system in the hippocampus remains unclear. Here, we investigated the consequences of GFRα1 deficiency for the development of hippocampal connections. Analysis of conditional Gfra1 knockout mice shows a reduction in dendritic length and complexity, as well as a decrease in postsynaptic density specializations and in the synaptic localization of postsynaptic proteins in hippocampal neurons. Gain- and loss-of-function assays demonstrate that the GDNF-GFRα1 complex promotes dendritic growth and postsynaptic differentiation in cultured hippocampal neurons. Finally, in vitro assays revealed that GDNF-GFRα1-induced dendrite growth and spine formation are mediated by NCAM signaling. Taken together, our results indicate that the GDNF-GFRα1 complex is essential for proper hippocampal circuit development.
Disciplines :
Anatomy (cytology, histology, embryology...) & physiology
Author, co-author :
Irala, Dolores
Bonafina, Antonela ;  Université de Liège - ULiège > Stem Cells-Molecular Regulation of Neurogenesis
Fontanet, Paula Aldana
Alsina, Fernando Cruz
Paratcha, Gustavo
Ledda, Fernanda
Language :
English
Title :
The GDNF-GFRα1 complex promotes the development of hippocampal dendritic arbors and spines via NCAM.
Publication date :
2016
Journal title :
Development (Cambridge, England)
ISSN :
0950-1991
eISSN :
1477-9129
Volume :
143
Issue :
22
Pages :
4224-4235
Peer reviewed :
Peer reviewed
Commentary :
© 2016. Published by The Company of Biologists Ltd.
Available on ORBi :
since 08 June 2020

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