Home > Articles > Published articles > Helios modulates the maturation of a CA1 neuronal subpopulation required for spatial memory formation |
Date: | 2020 |
Abstract: | Currently, molecular, electrophysiological and structural studies delineate several neural subtypes in the hippocampus. However, the precise developmental mechanisms that lead to this diversity are still unknown. Here we show that alterations in a concrete hippocampal neuronal subpopulation during development specifically affect hippocampal-dependent spatial memory. We observed that the genetic deletion of the transcription factor Helios in mice, which is specifically expressed in developing hippocampal calbindin-positive CA1 pyramidal neurons (CB-CA1-PNs), induces adult alterations affecting spatial memory. In the same mice, CA3-CA1 synaptic plasticity and spine density and morphology in adult CB-CA1-PNs were severely compromised. RNAseq experiments in developing hippocampus identified an aberrant increase on the Visinin-like protein 1 (VSNL1) expression in the hippocampi devoid of Helios. This aberrant increase on VSNL1 levels was localized in the CB-CA1-PNs. Normalization of VSNL1 levels in CB-CA1-PNs devoid of Helios rescued their spine loss in vitro. Our study identifies a novel and specific developmental molecular pathway involved in the maturation and function of a CA1 pyramidal neuronal subtype. |
Grants: | Ministerio de Economía y Competitividad SAF2016-76340R Ministerio de Economía y Competitividad SAF2015-66505-R Ministerio de Ciencia, Innovación y Universidades SAF 2014-57160 Ministerio de Economía y Competitividad RYC-2016-19466 Ministerio de Ciencia, Innovación y Universidades RTI2018-094678-A-I00 Ministerio de Ciencia, Innovación y Universidades BFU2017-88393-P Ministerio de Economía y Competitividad RTI2018-099001-B-I00 |
Rights: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. |
Language: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Subject: | Long-term potentiation ; VSNL1 ; Hippocampus ; Memory ; Development ; Dendritic spines |
Published in: | Experimental Neurology, Vol. 323 (2020) , ISSN 1090-2430 |
18 p, 5.7 MB |