Vinopal, S.* ; Dupraz, S.* ; Alfadil, E.* ; Pietralla, T.* ; Bendre, S.* ; Stiess, M.* ; Falk, S. ; Camargo Ortega, G. ; Maghelli, N.* ; Tolić, I.M.* ; Smejkal, J.* ; Götz, M. ; Bradke, F.*
Centrosomal microtubule nucleation regulates radial migration of projection neurons independently of polarization in the developing brain.
Neuron 111, 1241-1263.e16 (2023)
Cortical projection neurons polarize and form an axon while migrating radially. Even though these dynamic processes are closely interwoven, they are regulated separately-the neurons terminate their migration when reaching their destination, the cortical plate, but continue to grow their axons. Here, we show that in rodents, the centrosome distinguishes these processes. Newly developed molecular tools modulating centrosomal microtubule nucleation combined with in vivo imaging uncovered that dysregulation of centrosomal microtubule nucleation abrogated radial migration without affecting axon formation. Tightly regulated centrosomal microtubule nucleation was required for periodic formation of the cytoplasmic dilation at the leading process, which is essential for radial migration. The microtubule nucleating factor γ-tubulin decreased at neuronal centrosomes during the migratory phase. As distinct microtubule networks drive neuronal polarization and radial migration, this provides insight into how neuronal migratory defects occur without largely affecting axonal tracts in human developmental cortical dysgeneses, caused by mutations in γ-tubulin.
Impact Factor
Scopus SNIP
Web of Science
Times Cited
Scopus
Cited By
Altmetric
Publication type
Article: Journal article
Document type
Scientific Article
Thesis type
Editors
Keywords
Axon Formation ; Centrosome ; Microtubule ; Neuronal Polarity ; Radial Migration; Gamma-tubulin; Axon Regeneration; Golgi-apparatus; Cell Polarity; Organization; Cdk5rap2; Dynamics; Pathway; Lis1; Recruitment
Keywords plus
Language
english
Publication Year
2023
Prepublished in Year
0
HGF-reported in Year
2023
ISSN (print) / ISBN
0896-6273
e-ISSN
1097-4199
ISBN
Book Volume Title
Conference Title
Conference Date
Conference Location
Proceedings Title
Quellenangaben
Volume: 111,
Issue: 8,
Pages: 1241-1263.e16
Article Number: ,
Supplement: ,
Series
Publisher
Cell Press
Publishing Place
Cambridge, Mass.
Day of Oral Examination
0000-00-00
Advisor
Referee
Examiner
Topic
University
University place
Faculty
Publication date
0000-00-00
Application date
0000-00-00
Patent owner
Further owners
Application country
Patent priority
Reviewing status
Peer reviewed
POF-Topic(s)
30204 - Cell Programming and Repair
Research field(s)
Stem Cell and Neuroscience
PSP Element(s)
G-500800-001
Grants
Roger de Spoelberch Prize
ERANET AXON REPAIR
DFG
WFL
IRP
ERC
ERANET RATER SCI
Copyright
Erfassungsdatum
2023-02-23