GONUTS has been updated to MW1.31 Most things seem to be working but be sure to report problems.

Have any questions? Please email us at ecoliwiki@gmail.com


Jump to: navigation, search


You don't have sufficient rights on this wiki to edit tables. Perhaps you need to log in. Changes you make in the Table editor will not be saved back to the wiki

See Help for Help on this wiki. See the documentation for how to use the table editor


Ezratty, EJ, Stokes, N, Chai, S, Shah, AS, Williams, SE and Fuchs, E (2011) A role for the primary cilium in Notch signaling and epidermal differentiation during skin development. Cell 145:1129-41


Ciliogenesis precedes lineage-determining signaling in skin development. To understand why, we performed shRNA-mediated knockdown of seven intraflagellar transport proteins (IFTs) and conditional ablation of Ift-88 and Kif3a during embryogenesis. In both cultured keratinocytes and embryonic epidermis, all of these eliminated cilia, and many (not Kif3a) caused hyperproliferation. Surprisingly and independent of proliferation, ciliary mutants displayed defects in Notch signaling and commitment of progenitors to differentiate. Notch receptors and Notch-processing enzymes colocalized with cilia in wild-type epidermal cells. Moreover, differentiation defects in ciliary mutants were cell autonomous and rescued by activated Notch (NICD). By contrast, Shh signaling was neither operative nor required for epidermal ciliogenesis, Notch signaling, or differentiation. Rather, Shh signaling defects in ciliary mutants occurred later, arresting hair follicle morphogenesis in the skin. These findings unveil temporally and spatially distinct functions for primary cilia at the nexus of signaling, proliferation, and differentiation.


PubMed PMC3135909 Online version:10.1016/j.cell.2011.05.030


Animals; Carrier Proteins/genetics; Cell Differentiation; Cell Polarity; Cell Proliferation; Cilia/metabolism; Cytoskeletal Proteins/metabolism; Epidermis/cytology; Epidermis/embryology; Epidermis/metabolism; Gene Knockdown Techniques; Hair Follicle/cytology; Hedgehog Proteins/metabolism; Kinesis; Mice; Receptors, Notch/metabolism; Signal Transduction; Tumor Suppressor Proteins/metabolism