Regulation of Cilium Length and Intraflagellar Transport

JR Broekhuis, Weng yee Leong, Gert Jansen

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Primary cilia are highly conserved sensory organelles that extend from the surface of almost all vertebrate cells. The importance of cilia is evident from their involvement in many diseases, called ciliopathies. Primary cilia contain a microtubular axoneme that is used as a railway for transport of both structural components and signaling proteins. This transport machinery is called intraflagellar transport (IFT). Cilia are dynamic organelles whose presence on the cell surface, morphology, length and function are highly regulated. It is clear that the IFT machinery plays an important role in this regulation. However, it is not clear how, for example environmental cues or cell fate decisions are relayed to modulate IFT and cilium morphology or function. This chapter presents an overview of molecules that have been shown to regulate cilium length and IFT. Several examples where signaling modulates IFT and cilium function are used to discuss the importance of these systems for the cell and for understanding of the etiology of ciliopathies.
Original languageUndefined/Unknown
Pages (from-to)101-138
Number of pages38
JournalInternational review of cell and molecular biology, vol 303
Publication statusPublished - 2013

Research programs

  • EMC MGC-02-13-03

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