Journal article
AMPA receptor GluA2 subunit defects are a cause of neurodevelopmental disorders
V Salpietro, CL Dixon, H Guo, OD Bello, J Vandrovcova, S Efthymiou, R Maroofian, G Heimer, L Burglen, S Valence, E Torti, M Hacke, J Rankin, H Tariq, E Colin, V Procaccio, P Striano, K Mankad, A Lieb, S Chen Show all
Nature Communications | NATURE PORTFOLIO | Published : 2019
Open access
Abstract
AMPA receptors (AMPARs) are tetrameric ligand-gated channels made up of combinations of GluA1-4 subunits encoded by GRIA1-4 genes. GluA2 has an especially important role because, following post-transcriptional editing at the Q607 site, it renders heteromultimeric AMPARs Ca2+-impermeable, with a linear relationship between current and trans-membrane voltage. Here, we report heterozygous de novo GRIA2 mutations in 28 unrelated patients with intellectual disability (ID) and neurodevelopmental abnormalities including autism spectrum disorder (ASD), Rett syndrome-like features, and seizures or developmental epileptic encephalopathy (DEE). In functional expression studies, mutations lead to a decr..
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Awarded by Rosetrees Trust
Funding Acknowledgements
We gratefully acknowledge all the families for their enthusiastic participation to this study. Further acknowledgements can be found in Supplementary Note 29. This study was supported by the Wellcome Trust (WT093205MA and WT104033AIA), Medical Research Council (H.H. and D.M.K.), European Community's Seventh Framework Programme (FP7/2007-2013, under grant agreement No. 2012-305121 to H.H.), Muscular Dystrophy Association (MDA), Muscular Dystrophy UK, The MSA Trust, Ataxia UK, The Sparkes Children's Medical Research Charity, The Great Ormond Street Hospital Charity, Rosetrees Trust, Brain Research UK, The UK HSP Society, The European Union's Horizon 2020 research and innovation programme Solve-RD project (No 779257), The Pakistan Council (Scholarship to HT), The National Natural Science Foundation of China (31671114, 81871079, 81330027, and 81525007 to H.G. and K.X.) and the US National Institutes of Health (NIH grant R01MH101221 to E.E.E). E.E.E. is an investigator of the Howard Hughes Medical Institute. We acknowledge the CINECA Awards N. HP10BTJPER, 2017 (to SF), for the availability of high performance computing resources and support. We are also supported by the National Institute for Health Research (NIHR) University College London Hospitals (UCLH) Biomedical Research Centre (BRC). We are grateful to M. Farrant and S. Cull-Candy for helpful suggestions and the stargazin plasmid. We also acknowledge the University of Washington Center for Mendelian Genomics.