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TGF-β signalling and liver disease
Isabel Fabregat1,2, Joaquim Moreno-Càceres1, Aránzazu Sánchez3
1Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet, Barcelona, Spain.
The FEBS Journal
|January 26, 2016
Summary
Transforming growth factor-beta (TGF-β) pathways regulate cell processes vital for liver health. Dysregulation of TGF-β signalling drives liver injury, fibrosis, cirrhosis, and cancer, making it a therapeutic target.
Area of Science:
- Cell Biology
- Molecular Biology
- Hepatology
Background:
- Transforming growth factor-beta (TGF-β) signalling pathways are crucial for cellular functions like proliferation, differentiation, and cell death, maintaining tissue homeostasis.
- Deregulation of TGF-β pathways is implicated in various human diseases.
- In the liver, TGF-β signalling is involved in all disease stages, from injury and inflammation to fibrosis, cirrhosis, and cancer.
Purpose of the Study:
- To review the current understanding of TGF-β signalling pathways in liver physiology and pathology.
- To highlight the dual role of TGF-β in liver disease progression, acting as a suppressor early on and a promoter later.
- To discuss the therapeutic potential of targeting TGF-β signalling for liver disease treatment.
Main Methods:
- Literature review of studies on TGF-β signalling in liver disease.
- Analysis of the role of TGF-β in hepatocyte function and liver cell death.
- Examination of TGF-β's involvement in hepatic stellate cell activation and fibrosis.
- Investigation of TGF-β's function in liver tumorigenesis.
Main Results:
- TGF-β promotes liver differentiation and regeneration under normal conditions.
- Chronic liver damage leads to elevated TGF-β, causing stellate cell activation, hepatocyte death, fibrosis, and cirrhosis.
- TGF-β can suppress early liver tumour development but promotes progression in later stages.
- Targeting TGF-β pathways is a promising strategy for managing liver diseases.
Conclusions:
- TGF-β signalling plays a complex and context-dependent role in liver disease.
- Understanding TGF-β's multifaceted functions is key to developing effective liver disease therapies.
- Modulating TGF-β pathways offers a potential therapeutic avenue for liver fibrosis, cirrhosis, and cancer.
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