Mutations in MAST1 Cause Mega-Corpus-Callosum Syndrome with Cerebellar Hypoplasia and Cortical Malformations.

Détails

ID Serval
serval:BIB_769F69929167
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Mutations in MAST1 Cause Mega-Corpus-Callosum Syndrome with Cerebellar Hypoplasia and Cortical Malformations.
Périodique
Neuron
Auteur(s)
Tripathy R., Leca I., van Dijk T., Weiss J., van Bon B.W., Sergaki M.C., Gstrein T., Breuss M., Tian G., Bahi-Buisson N., Paciorkowski A.R., Pagnamenta A.T., Wenninger-Weinzierl A., Martinez-Reza M.F., Landler L., Lise S., Taylor J.C., Terrone G., Vitiello G., Del Giudice E., Brunetti-Pierri N., D'Amico A., Reymond A., Voisin N., Bernstein J.A., Farrelly E., Kini U., Leonard T.A., Valence S., Burglen L., Armstrong L., Hiatt S.M., Cooper G.M., Aldinger K.A., Dobyns W.B., Mirzaa G., Pierson T.M., Baas F., Chelly J., Cowan N.J., Keays D.A.
ISSN
1097-4199 (Electronic)
ISSN-L
0896-6273
Statut éditorial
Publié
Date de publication
2018
Peer-reviewed
Oui
Volume
100
Numéro
6
Pages
1354-1368.e5
Langue
anglais
Résumé
Corpus callosum malformations are associated with a broad range of neurodevelopmental diseases. We report that de novo mutations in MAST1 cause mega-corpus-callosum syndrome with cerebellar hypoplasia and cortical malformations (MCC-CH-CM) in the absence of megalencephaly. We show that MAST1 is a microtubule-associated protein that is predominantly expressed in post-mitotic neurons and is present in both dendritic and axonal compartments. We further show that Mast1 null animals are phenotypically normal, whereas the deletion of a single amino acid (L278del) recapitulates the distinct neurological phenotype observed in patients. In animals harboring Mast1 microdeletions, we find that the PI3K/AKT3/mTOR pathway is unperturbed, whereas Mast2 and Mast3 levels are diminished, indicative of a dominant-negative mode of action. Finally, we report that de novo MAST1 substitutions are present in patients with autism and microcephaly, raising the prospect that mutations in this gene give rise to a spectrum of neurodevelopmental diseases.
Mots-clé
MAST1, cerebellar hypoplasia, corpus callosum, microdeletion, microtubules
Pubmed
Web of science
Création de la notice
26/11/2018 14:53
Dernière modification de la notice
29/01/2019 7:26
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