Loss of non-motor kinesin KIF26A causes congenital brain malformations via dysregulated neuronal migration and axonal growth as well as apoptosis.
apoptosis
cerebral cortex
congenital brain malformation
corpus callosum
development
genetics
kinesin
migration
organoid
Journal
Developmental cell
ISSN: 1878-1551
Titre abrégé: Dev Cell
Pays: United States
ID NLM: 101120028
Informations de publication
Date de publication:
24 10 2022
24 10 2022
Historique:
received:
06
12
2021
revised:
13
06
2022
accepted:
20
09
2022
pubmed:
14
10
2022
medline:
28
10
2022
entrez:
13
10
2022
Statut:
ppublish
Résumé
Kinesins are canonical molecular motors but can also function as modulators of intracellular signaling. KIF26A, an unconventional kinesin that lacks motor activity, inhibits growth-factor-receptor-bound protein 2 (GRB2)- and focal adhesion kinase (FAK)-dependent signal transduction, but its functions in the brain have not been characterized. We report a patient cohort with biallelic loss-of-function variants in KIF26A, exhibiting a spectrum of congenital brain malformations. In the developing brain, KIF26A is preferentially expressed during early- and mid-gestation in excitatory neurons. Combining mice and human iPSC-derived organoid models, we discovered that loss of KIF26A causes excitatory neuron-specific defects in radial migration, localization, dendritic and axonal growth, and apoptosis, offering a convincing explanation of the disease etiology in patients. Single-cell RNA sequencing in KIF26A knockout organoids revealed transcriptional changes in MAPK, MYC, and E2F pathways. Our findings illustrate the pathogenesis of KIF26A loss-of-function variants and identify the surprising versatility of this non-motor kinesin.
Identifiants
pubmed: 36228617
pii: S1534-5807(22)00681-5
doi: 10.1016/j.devcel.2022.09.011
pmc: PMC10585591
mid: NIHMS1935233
pii:
doi:
Substances chimiques
Kinesins
EC 3.6.4.4
Focal Adhesion Protein-Tyrosine Kinases
EC 2.7.10.2
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
2381-2396.e13Subventions
Organisme : NINDS NIH HHS
ID : R01 NS032457
Pays : United States
Organisme : NHGRI NIH HHS
ID : UM1 HG008900
Pays : United States
Organisme : NHGRI NIH HHS
ID : R01 HG009141
Pays : United States
Organisme : NINDS NIH HHS
ID : R35 NS105078
Pays : United States
Organisme : NIGMS NIH HHS
ID : T32 GM144273
Pays : United States
Organisme : NINDS NIH HHS
ID : R01 NS035129
Pays : United States
Organisme : NICHD NIH HHS
ID : U54 HD090255
Pays : United States
Organisme : NIGMS NIH HHS
ID : R01 GM106373
Pays : United States
Organisme : NINDS NIH HHS
ID : R25 NS070682
Pays : United States
Organisme : NIGMS NIH HHS
ID : T32 GM007753
Pays : United States
Organisme : NHGRI NIH HHS
ID : UM1 HG006542
Pays : United States
Organisme : NHGRI NIH HHS
ID : U01 HG011758
Pays : United States
Organisme : Howard Hughes Medical Institute
Pays : United States
Informations de copyright
Copyright © 2022 The Author(s). Published by Elsevier Inc. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of interests J.R.L. has stock ownership in 23andMe, is a paid consultant for the Regeneron Genetics Center, and is a co-inventor on multiple United States and European patents related to molecular diagnostics for inherited neuropathies, eye diseases, and bacterial genomic fingerprinting. The Department of Molecular and Human Genetics at Baylor College of Medicine receives revenue from clinical genetic testing conducted at Baylor Genetics (BG) Laboratories, and J.R.L. is a member of the Scientific Advisory Board of BG. C.A.W. has stock ownership in Maze Therapeutics and is a paid consultant for Third Rock Ventures and Flagship Pioneering.
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