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Updated: Feb 15, 2026
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Seven Steps to Stellate Cells
Published on: May 10, 2011
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Targeting the FAPα/Integrin αvβ1 complex attenuates hepatic stellate cell activation and liver fibrosis
Chun Guan1, Nuo Cheng1, Yu Tong1
1State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Advanced Pharmaceuticals and Biomaterials, China Pharmaceutical University, Nanjing 211198, PR China.
Biochemical Pharmacology
|February 13, 2026
Summary
Inhibiting fibroblast activation protein alpha (FAPα) and Integrin αvβ1 in hepatic stellate cells (HSCs) suppresses liver fibrosis. This FAPα/Integrin αvβ1 complex targets the GPC3/FGF21 axis, offering a new therapeutic strategy.
Area of Science:
- Hepatology
- Cell Biology
- Molecular Medicine
Background:
- Hepatic stellate cell (HSC) activation drives liver fibrosis.
- Fibroblast activation protein alpha (FAPα) is upregulated in activated HSCs, but its role is not fully understood.
Purpose of the Study:
- To investigate the function and mechanism of FAPα in HSC activation and liver fibrosis progression.
- To explore the therapeutic potential of targeting FAPα, alone or in combination with Integrin αvβ1.
Main Methods:
- Utilized TGF-β1-induced LX2 cells and CCl4-induced mouse models.
- Employed small-molecule inhibitors and multi-omics analyses (transcriptomics and proteomics).
- Investigated the formation and function of the FAPα/Integrin αvβ1 complex.
Main Results:
- FAPα inhibition suppressed HSC activation, proliferation, and migration, ameliorating liver fibrosis.
- FAPα forms a functional complex with Integrin αvβ1 in activated HSCs.
- Dual inhibition of FAPα/Integrin αvβ1 was more effective than single-agent treatment.
- The FAPα/Integrin αvβ1 complex mediates its effects via the GPC3/FGF21 axis.
Conclusions:
- The FAPα/Integrin αvβ1 complex is a critical regulator of liver fibrosis.
- Combined inhibition of FAPα and Integrin αvβ1 presents a promising therapeutic strategy for liver fibrosis.
- This study identifies a novel therapeutic target and approach for anti-fibrotic drug development.
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