Mutations in ANKLE2, a ZIKA Virus Target, Disrupt an Asymmetric Cell Division Pathway in Drosophila Neuroblasts to Cause Microcephaly.
Ballchen
Bazooka
L(2)gl
MCPH16
Miranda
NS4A
VRK1
aPKC
brain development
congenital infection
Journal
Developmental cell
ISSN: 1878-1551
Titre abrégé: Dev Cell
Pays: United States
ID NLM: 101120028
Informations de publication
Date de publication:
16 12 2019
16 12 2019
Historique:
received:
13
05
2019
revised:
19
08
2019
accepted:
14
10
2019
pubmed:
19
11
2019
medline:
11
6
2020
entrez:
19
11
2019
Statut:
ppublish
Résumé
The apical Par complex, which contains atypical protein kinase C (aPKC), Bazooka (Par-3), and Par-6, is required for establishing polarity during asymmetric division of neuroblasts in Drosophila, and its activity depends on L(2)gl. We show that loss of Ankle2, a protein associated with microcephaly in humans and known to interact with Zika protein NS4A, reduces brain volume in flies and impacts the function of the Par complex. Reducing Ankle2 levels disrupts endoplasmic reticulum (ER) and nuclear envelope morphology, releasing the kinase Ballchen-VRK1 into the cytosol. These defects are associated with reduced phosphorylation of aPKC, disruption of Par-complex localization, and spindle alignment defects. Importantly, removal of one copy of ballchen or l(2)gl suppresses Ankle2 mutant phenotypes and restores viability and brain size. Human mutational studies implicate the above-mentioned genes in microcephaly and motor neuron disease. We suggest that NS4A, ANKLE2, VRK1, and LLGL1 define a pathway impinging on asymmetric determinants of neural stem cell division.
Identifiants
pubmed: 31735666
pii: S1534-5807(19)30853-6
doi: 10.1016/j.devcel.2019.10.009
pmc: PMC6917859
mid: NIHMS1545068
pii:
doi:
Substances chimiques
ANKLE2 protein, human
0
Membrane Proteins
0
Nuclear Proteins
0
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
713-729.e6Subventions
Organisme : NINDS NIH HHS
ID : F32 NS092270
Pays : United States
Organisme : NIDDK NIH HHS
ID : R01 DK109934
Pays : United States
Organisme : NINDS NIH HHS
ID : R01 NS078294
Pays : United States
Organisme : NICHD NIH HHS
ID : U54 HD083092
Pays : United States
Organisme : NHGRI NIH HHS
ID : UM1 HG006542
Pays : United States
Organisme : NINDS NIH HHS
ID : R35 NS105078
Pays : United States
Organisme : NINDS NIH HHS
ID : K08 NS092898
Pays : United States
Organisme : NIGMS NIH HHS
ID : R01 GM067858
Pays : United States
Organisme : Howard Hughes Medical Institute
Pays : United States
Organisme : NINDS NIH HHS
ID : U54 NS093793
Pays : United States
Organisme : NIH HHS
ID : R24 OD022005
Pays : United States
Informations de copyright
Copyright © 2019 Elsevier Inc. All rights reserved.
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