Endocytic control of cellular signaling at the primary cilium

57 Citations (Scopus)

Abstract

Primary cilia are dynamic signaling organelles that project from the cell surface to sense diverse chemical, physical and morphogenetic cues. Ciliary defects therefore cause diseases (ciliopathies) that affect multiple organs in developing and adult organisms. Cilia-mediated signaling involves the orchestrated movement of signaling proteins in and out of the ciliary compartment, including movement of receptors such as the Sonic Hedgehog (Shh) receptor Patched 1 (PTCH1), Smoothened (SMO), and various other G protein-coupled receptors (GPCRs), as well as transforming growth factor β (TGF-β) receptors I and II (TGF-β-RI/II). We provide here a current understanding of trafficking events associated with cilia-mediated signaling, with emphasis on the involvement of clathrin-dependent receptor-mediated endocytosis in regulating ciliary Shh and TGF-β signaling.

Original languageEnglish
JournalTrends in Biochemical Sciences
Volume41
Issue number9
Pages (from-to)784-797
Number of pages14
ISSN0968-0004
DOIs
Publication statusPublished - 1 Sept 2016

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