GSK3α, not GSK3β, drives hippocampal NMDAR‐dependent LTD via tau‐mediated spine anchoring
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Título: | GSK3α, not GSK3β, drives hippocampal NMDAR‐dependent LTD via tau‐mediated spine anchoring |
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Autor/es: | Draffin, Jonathan E. | Sánchez‐Castillo, Carla | Fernández‐Rodrigo, Alba | Sánchez-Sáez, Xavier | Ávila, Jesús | Wagner, Florence F. | Esteban, José A. |
Grupo/s de investigación o GITE: | Neurobiología del Sistema Visual y Terapia de Enfermedades Neurodegenerativas (NEUROVIS) |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Fisiología, Genética y Microbiología |
Palabras clave: | AMPA receptor | BRD-0705 | BRD-3731 | Long-term depression | Synaptic plasticity |
Área/s de conocimiento: | Biología Celular |
Fecha de publicación: | 16-nov-2020 |
Editor: | EMBO Press |
Cita bibliográfica: | The EMBO Journal. 2020: e105513. https://doi.org/10.15252/embj.2020105513 |
Resumen: | Glycogen synthase kinase‐3 (GSK3) is an important signalling protein in the brain and modulates different forms of synaptic plasticity. Neuronal functions of GSK3 are typically attributed to one of its two isoforms, GSK3β, simply because of its prevalent expression in the brain. Consequently, the importance of isoform‐specific functions of GSK3 in synaptic plasticity has not been fully explored. We now directly address this question for NMDA receptor‐dependent long‐term depression (LTD) in the hippocampus. Here, we specifically target the GSK3 isoforms with shRNA knock‐down in mouse hippocampus and with novel isoform‐selective drugs to dissect their roles in LTD. Using electrophysiological and live imaging approaches, we find that GSK3α, but not GSK3β, is required for LTD. The specific engagement of GSK3α occurs via its transient anchoring in dendritic spines during LTD induction. We find that the major GSK3 substrate, the microtubule‐binding protein tau, is required for this spine anchoring of GSK3α and mediates GSK3α‐induced LTD. These results link GSK3α and tau in a common mechanism for synaptic depression and rule out a major role for GSK3β in this process. |
Patrocinador/es: | This work was supported by grants from the Spanish Ministry of Science (SAF2017-86983-R) to JAE. JED, CS-C and AF-R were recipients of pre-doctoral contracts from the Spanish Ministry of Science. |
URI: | http://hdl.handle.net/10045/110523 |
ISSN: | 0261-4189 (Print) | 1460-2075 (Online) |
DOI: | 10.15252/embj.2020105513 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2020 The Authors |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.15252/embj.2020105513 |
Aparece en las colecciones: | INV - NEUROVIS - Artículos de Revistas |
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Archivo | Descripción | Tamaño | Formato | |
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Draffin_etal_2020_EMBOJ_final.pdf | Versión final (acceso restringido) | 3,18 MB | Adobe PDF | Abrir Solicitar una copia |
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