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The circuitous cell signalling pathways of hepatocytes comprise several factors that operate to downgrade or even interrupt the transmission of a given signal. These down-regulating influences are essential to keep cell proliferation and cell survival in check and if impaired, can alter a delicate balance in favour of cell proliferation. Each signalling pathway that has been implicated in carcinogenesis is influenced by both oncogenic factors that promote tumour growth when activated as well as tumour suppressor proteins that have to be impaired to favour tumour growth. This summary of the Tumour Suppressors in Liver Carcinogenesis Symposium held at the 2007 EASL Annual Meeting discusses four pathways with pre-eminent tumour suppressor activity, each involved in hepatocarcinogenesis: p53, mTOR, beta-catenin and hedgehog.

Original publication

DOI

10.1016/j.jhep.2007.09.003

Type

Journal article

Journal

J Hepatol

Publication Date

12/2007

Volume

47

Pages

860 - 867

Keywords

Hedgehog Proteins, Hepatocytes, Humans, Liver Neoplasms, Protein Kinases, Signal Transduction, TOR Serine-Threonine Kinases, Tumor Suppressor Protein p53, Tumor Suppressor Proteins, beta Catenin