Journal
MECHANISMS OF DEVELOPMENT
Volume 126, Issue 5-6, Pages 279-288Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mod.2009.01.007
Keywords
Hedgehog signaling; Trafficking; Rab23; Cilia; Intraflagellar transport; Patched; Smoothened; Gli; Sterols
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Funding
- Australian National Health and Medical Research Council (NHMRC)
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Embryogenesis is mediated by a relatively small number of developmental signaling pathways, and the morphogens, receptors and transcription factors integral to these cascades are considered the master regulators of development. However, superimposed on this is an additional layer of control by complex intracellular trafficking networks. The importance of trafficking in controlling the processes of morphogenesis and development is highlighted by recent data regarding the transport and localisation of the morphogen sonic hedgehog (Shh) and the machinery that leads to its secretion, modification, cellular internalisation and signal transduction. Here we review the regulation of hedgehog signaling by intracellular trafficking, including the role of the primary cilium and lipids in mediating pathway activity. (C) 2009 Elsevier Ireland Ltd. All rights reserved.
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