Perspective
Nature Cell Biology 9, 1005 - 1009 (2007)
doi:10.1038/ncb435
Patching the gaps in Hedgehog signalling
Rajat Rohatgi1 & Matthew P. Scott1
Abstract
The Hedgehog (Hh) pathway plays central roles in animal development and stem-cell function. Defects in Hh signalling lead to birth defects and cancer in humans. The first and often genetically damaged step in this pathway is the interaction between two membrane proteins — Patched (Ptc), encoded by a tumour suppressor gene, and Smoothened (Smo), encoded by a proto-oncogene. Recent work linking Hh signalling to sterol metabolites and protein-trafficking events at the primary cilium promises to shed light on the biochemical basis of how Patched inhibits Smoothened, and to provide new avenues for cancer treatment.
- Rajat Rohatgi and Matthew P. Scott are in the Departments of Developmental Biology, Genetics, and Bioengineering and Department of Oncology, Howard Hughes Medical Institute, Clark Center West W252, 318 Campus Drive, Stanford University School of Medicine, Stanford, CA 94305–5439, USA. e-mail: mscott@stanford.edu
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