Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/175771
Title: KIS, a kinase associated with microtubule regulators, enhances translation of AMPA receptors and stimulates dendritic spine remodeling
Author: Pedraza González, Neus
Ortiz Hernández, Raül
Cornadó, Alba
Llobet Berenguer, Artur, 1972-
Aldea, Martí
Gallego, Carme
Keywords: Metabolisme
Fisiologia
Microtúbuls
Biosíntesi
Proteïnes
Metabolism
Physiology
Microtubules
Biosynthesis
Proteins
Issue Date: 15-Oct-2014
Publisher: The Society for Neuroscience
Abstract: Local regulation of protein synthesis allows a neuron to rapidly alter the proteome in response to synaptic signals, an essential mechanism in synaptic plasticity that is altered in many neurological diseases. Synthesis of many synaptic proteins is under local control and much of this regulation occurs through structures termed RNA granules. KIS is a protein kinase that associates with stathmin, a modulator of the tubulin cytoskeleton. Furthermore, KIS is found in RNA granules and stimulates translation driven by the β-actin 3'UTR in neurites. Here we explore the physiological and molecular mechanisms underlying the action of KIS on hippocampal synaptic plasticity in mice. KIS downregulation compromises spine development, alters actin dynamics, and reduces postsynaptic responsiveness. The absence of KIS results in a significant decrease of protein levels of PSD-95, a postsynaptic scaffolding protein, and the AMPAR subunits GluR1 and GluR2 in a CPEB3-dependent manner. Underlying its role in spine maturation, KIS is able to suppress the spine developmental defects caused by CPEB3 overexpression. Moreover, either by direct or indirect mechanisms, KIS counteracts the inhibitory activity of CPEB3 on the GluR2 3'UTR at both mRNA translation and polyadenylation levels. Our study provides insights into the mechanisms that mediate dendritic spine morphogenesis and functional synaptic maturation, and suggests KIS as a link regulating spine cytoskeleton and postsynaptic activity in memory formation.
Note: Reproducció del document publicat a: https://doi.org/10.1523/JNEUROSCI.1573-14.2014
It is part of: Journal of Neuroscience, 2014, vol. 34, num. 42, p. 13988-13997
URI: http://hdl.handle.net/2445/175771
Related resource: https://doi.org/10.1523/JNEUROSCI.1573-14.2014
ISSN: 0270-6474
Appears in Collections:Articles publicats en revistes (Patologia i Terapèutica Experimental)
Articles publicats en revistes (Institut d'lnvestigació Biomèdica de Bellvitge (IDIBELL))

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