Abstract
Inhibition of Sonic hedgehog (Shh) signaling is of great clinical interest. Here we exploit Hedgehog acyltransferase (Hhat)-mediated Shh palmitoylation, a modification critical for Shh signaling, as a new target for Shh pathway inhibition. A target-oriented high-throughput screen was used to identify small-molecule inhibitors of Hhat. In cells, these Hhat inhibitors specifically block Shh palmitoylation and inhibit autocrine and paracrine Shh signaling.
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Acknowledgements
We thank R. Louft-Nisenbaum, K. Anderson, D. Tan, E. Legué and A. Joyner for helpful input. This work was supported by US National Institutes of Health grants GM57966 and CA158474, Cycle for Survival, the Geoffrey Beene Cancer Research Foundation, the Sarcoma Foundation of America, W.H. Goodwin and A. Goodwin and the Commonwealth Foundation for Cancer Research and the Experimental Therapeutics Center of Memorial Sloan-Kettering Cancer Center. The Organic Synthesis Core is partially supported by NCI P30 CA008748-43.
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E.P. performed all experiments, except for Wnt acylation performed by J.R.-E. J.F.G. supervised the high-throughput screening performed by E.P., and hits were analyzed by E.P., O.O., J.F.G. and M.D.R. The research plan was designed by E.P., J.F.G. and M.D.R. E.P. and M.D.R. wrote the manuscript with input from all authors.
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Petrova, E., Rios-Esteves, J., Ouerfelli, O. et al. Inhibitors of Hedgehog acyltransferase block Sonic Hedgehog signaling. Nat Chem Biol 9, 247–249 (2013). https://doi.org/10.1038/nchembio.1184
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DOI: https://doi.org/10.1038/nchembio.1184
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