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Gegg, M. ; Böttcher, A. ; Burtscher, I. ; Hasenöder, S. ; van Campenhout, C.A.* ; Aichler, M. ; Walch, A.K. ; Grant, S.G.* ; Lickert, H.

Flattop regulates basal body docking and positioning in mono- and multiciliated cells.

eLife 3:e03842 (2014)
Verlagsversion DOI PMC
Open Access Gold
Creative Commons Lizenzvertrag
Planar cell polarity (PCP) regulates basal body (BB) docking and positioning during cilia formation, but the underlying mechanisms remain elusive. Here, we investigate the uncharacterized gene Flattop (Fltp) that is transcriptionally activated during PCP acquisition in ciliated tissues. Fltp knock-out mice show BB docking and ciliogenesis defects in multiciliated lung cells. Furthermore, Fltp is necessary for kinocilium positioning in monociliated inner ear hair cells. In these cells, the core PCP molecule Dishevelled 2, the BB/spindle positioning protein Dlg3 and Fltp localize directly adjacent at the apical plasma membrane, physically interact and surround the BB at the interface of the microtubule and actin cytoskeleton. Dlg3 and Fltp knock-outs suggest that both cooperatively translate PCP cues for BB positioning in the inner ear. Taken together, the identification of novel BB/spindle positioning components as potential mediators of PCP signaling might have broader implications for other cell types, ciliary disease and asymmetric cell division.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Flattop ; Actin ; Basal Body ; Cell Biology ; Developmental Biology ; Microtubule ; Mouse ; Planar Cell Polarity ; Spindle Positioning ; Stem Cells
ISSN (print) / ISBN 2050-084X
e-ISSN 2050-084X
Zeitschrift eLife
Quellenangaben Band: 3, Heft: , Seiten: , Artikelnummer: e03842 Supplement: ,
Verlag eLife Sciences Publications
Begutachtungsstatus