Abstract
Hedgehog gene was first described in Drosophila in 1980 by Nobel laureates Drs. E. Wieschaus and C. Nusslein-Volhard. Over the past three decades, the hedgehog pathway has been shown to be a major regulator for cell differentiation, tissue polarity, cell proliferation, stem cell maintenance, and carcinogenesis. The first link of Hh signaling to human cancer was established in 1996 through studies of a rare familiar disease, Gorlin syndrome. Follow-up studies from many laboratories reveal activation of this pathway in a range of human cancer types, including basal cell carcinomas (BCCs), medulloblastomas, leukemia, gastrointestinal, lung, ovarian, breast, and prostate cancers. Targeted inhibition of Hh signaling is now believed to be effective in treatment and prevention of human cancer. Even more exciting is the discovery and synthesis of a variety of specific inhibitors for this pathway. In this review, we summarize major advances in our understanding of Hh signaling activation in human cancer, useful mouse models for studying Hh-mediated carcinogenesis, the roles of Hh signaling in tumor initiation, promotion, tumor metastasis, and cancer stem cell maintenance as well as antagonists for Hh signaling and their clinical implications.
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Acknowledgments
Current research in my laboratory is supported by grants from the National Cancer Institute CA94160 and Wells Center for Pediatric Research.
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Xie, J., Epstein, E. (2011). Activation of Hedgehog Signaling in Human Cancer. In: Xie, J. (eds) Hedgehog signaling activation in human cancer and its clinical implications. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-8435-7_7
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