PuSH - Publication Server of Helmholtz Zentrum München

Weigel, B.* ; Tegethoff, J.F.* ; Grieder, S.D.* ; Lim, B.* ; Nagarajan, B.* ; Liu, Y.C.* ; Truberg, J.* ; Papageorgiou, D.* ; Adrian-Segarra, J.M.* ; Schmidt, L.K.* ; Kaspar, J.* ; Poisel, E.* ; Heinzelmann, E.* ; Saraswat, M.* ; Christ, M.* ; Arnold, C.* ; Ibarra Del Rio, I.A. ; Campos, J.* ; Krijgsveld, J.* ; Monyer, H.* ; Zaugg, J.B.* ; Acuna, C.* ; Mall, M.*

MYT1L haploinsufficiency in human neurons and mice causes autism-associated phenotypes that can be reversed by genetic and pharmacologic intervention.

Mol. Psychiatry 28, 2122-2135 (2023)
DOI PMC
Creative Commons Lizenzvertrag
MYT1L is an autism spectrum disorder (ASD)-associated transcription factor that is expressed in virtually all neurons throughout life. How MYT1L mutations cause neurological phenotypes and whether they can be targeted remains enigmatic. Here, we examine the effects of MYT1L deficiency in human neurons and mice. Mutant mice exhibit neurodevelopmental delays with thinner cortices, behavioural phenotypes, and gene expression changes that resemble those of ASD patients. MYT1L target genes, including WNT and NOTCH, are activated upon MYT1L depletion and their chemical inhibition can rescue delayed neurogenesis in vitro. MYT1L deficiency also causes upregulation of the main cardiac sodium channel, SCN5A, and neuronal hyperactivity, which could be restored by shRNA-mediated knockdown of SCN5A or MYT1L overexpression in postmitotic neurons. Acute application of the sodium channel blocker, lamotrigine, also rescued electrophysiological defects in vitro and behaviour phenotypes in vivo. Hence, MYT1L mutation causes both developmental and postmitotic neurological defects. However, acute intervention can normalise resulting electrophysiological and behavioural phenotypes in adulthood.
Altmetric
Additional Metrics?
[➜Log in]
Edit extra informations Login
Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
ISSN (print) / ISBN 1359-4184
e-ISSN 1476-5578
Journal Molecular Psychiatry
Quellenangaben Volume: 28, Issue: 5, Pages: 2122-2135 Article Number: , Supplement: ,
Publisher Nature Publishing Group
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Institute of Computational Biology (ICB)