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Hepatic Stellate Cell Activation Pathway

Molecular classification: Signaling Pathway

Overview

The hepatic stellate cell (HSC) activation pathway is a central mechanism in the development of liver fibrosis. In response to chronic liver injury, quiescent HSCs transdifferentiate into proliferative, contractile myofibroblast-like cells, leading to excessive extracellular matrix (ECM) deposition and tissue scarring. Key signaling pathways involved include TGF-β/Smad, MAPK, PI3K/AKT, Wnt/β-catenin, and NF-kB.

Other names: HSC Activation PathwayLiver Fibrosis PathwayHepatic Fibrogenesis Pathway

Mechanism of action

Targeting key signaling molecules within the pathway to reduce HSC activation, ECM production, and fibrosis progression.

Biological functions

Cellular differentiationExtracellular matrix productionCell proliferationInflammatory responseTissue remodeling

Disease associations

Liver fibrosisCirrhosisNon-alcoholic steatohepatitis (NASH)Alcoholic liver disease (ALD)Chronic hepatitis

Safety considerations

Potential for off-target effects due to broad pathway involvement in other cellular processes.Risk of exacerbating other disease conditions by disrupting normal cellular signaling.Development of resistance mechanisms by HSCs.

Interacting drugs

TGF-β inhibitors

4 more in the full profile.

Biomarkers

α-SMACollagen type ICollagen type IIITGF-β levelsHA (Hyaluronic acid)TIMP-1 (Tissue inhibitor of metalloproteinases-1)

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