期刊
FEBS JOURNAL
卷 283, 期 12, 页码 2219-2232出版社
WILEY
DOI: 10.1111/febs.13665
关键词
chronic liver injury; development; fibrosis; hepatocarcinogenesis; hepatocellular carcinoma; inflammation; liver; regeneration; signalling; TGF-beta
资金
- European Union [PITN-GA-2012-316549]
The transforming growth factor-beta (TGF-beta) family signalling pathways play essential roles in the regulation of different cellular processes, including proliferation, differentiation, migration or cell death, which are essential for the homeostasis of tissues and organs. Because of the diverse and pleiotropic TGF-beta functions, deregulation of its pathways contributes to human disease. In the case of the liver, TGF-beta signalling participates in all stages of disease progression, from initial liver injury through inflammation and fibrosis, to cirrhosis and cancer. TGF-beta has cytostatic and apoptotic effects in hepatocytes, promoting liver differentiation during embryogenesis and physiological liver regeneration. However, high levels of TGF-beta, as a consequence of chronic liver damage, result in activation of stellate cells to myofibroblasts and massive hepatocyte cell death, which contributes to the promotion of liver fibrosis and later cirrhosis. During liver tumorigenesis, TGF-beta may behave as a suppressor factor at early stages; however, there is strong evidence that overactivation of TGF-beta signalling might contribute to later tumour progression, once cells escape from its cytostatic effects. For these reasons, targeting the TGF-beta signalling pathway is being explored to counteract liver disease progression. In this review, we aim to shed light on the state-of-the-art in the signalling pathways induced by TGF-beta that are involved in different stages of liver physiology and pathology.
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