Abstract:
:Cytokinesis mediates the physical separation of dividing cells and, in 3D epithelia, provides a spatial landmark for lumen formation. Here, we unravel an unexpected role in cytokinesis for proteins of the intraflagellar transport (IFT) machinery, initially characterized for their ciliary role and their link to polycystic kidney disease. Using 2D and 3D cultures of renal cells, we show that IFT proteins are required to correctly shape the central spindle, to control symmetric cleavage furrow ingression and to ensure central lumen positioning. Mechanistically, IFT88 directly interacts with the kinesin MKLP2 and is essential for the correct relocalization of the Aurora B/MKLP2 complex to the central spindle. IFT88 is thus required for proper centralspindlin distribution and central spindle microtubule organization. Overall, this work unravels a novel non-ciliary mechanism for IFT proteins at the central spindle, which could contribute to kidney cyst formation by affecting lumen positioning.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Taulet N,Vitre B,Anguille C,Douanier A,Rocancourt M,Taschner M,Lorentzen E,Echard A,Delaval Bdoi
10.1038/s41467-017-01479-3subject
Has Abstractpub_date
2017-12-04 00:00:00pages
1928issue
1issn
2041-1723pii
10.1038/s41467-017-01479-3journal_volume
8pub_type
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