Résumé
The actin cytoskeleton is essential for the structural changes in dendritic spines that lead to the formation of new synapses. Although the molecular mechanisms underlying spine formation are well characterized, the events that drive spine maturation during development are largely unknown. In this study, we demonstrate that Angiomotin (AMOT-130) is necessary for spine stabilization. AMOT-130 is enriched in mature dendritic spines and functions to stabilize the actin cytoskeleton by coupling F-actin to postsynaptic protein scaffolds. These functions of AMOT are transiently restricted during postnatal development by phosphorylation imposed by the kinase Lats1. Our study proposes that AMOT-130 is essential for normal spine morphogenesis and identifies Lats1 as an upstream regulator in this process. Moreover, our findings may link AMOT-130 loss and the related spine defects to neurological disorders.
Langue d'origine | English |
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Pages (de-à) | 715-730 |
Nombre de pages | 16 |
Journal | Journal of Cell Biology |
Volume | 217 |
Numéro de publication | 2 |
DOI | |
Statut de publication | Published - févr. 1 2018 |
Note bibliographique
Funding Information:This work was supported in part by funding from the Natural Sciences and Engineering Research Council of Canada to J.P. Fawcett (RGPIN-2017-05146) and S.R. Krueger (RGPIN-2011-326821), the Canadian Institutes of Health Research (MOP 341174), and a Research Scholar Award from the EJLB Foundation (to J.P. Fawcett). J.P. Fawcett was supported by the Canada Research Chairs Program through this work. The authors declare no competing financial interests.
Publisher Copyright:
© 2018 Wigerius et al.
ASJC Scopus Subject Areas
- Cell Biology