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Dioscin Inhibits HSC-T6 Cell Migration via Adjusting SDC-4 Expression: Insights from iTRAQ-Based Quantitative
Lianhong Yin1, Yan Qi1, Youwei Xu1
1College of Pharmacy, Dalian Medical UniversityDalian, China.
Frontiers in Pharmacology
|October 17, 2017
Summary
Dioscin inhibits liver fibrosis by blocking hepatic stellate cell (HSC) migration. This study identifies SDC-4 as a key regulator in dioscin
Area of Science:
- Cell Biology
- Molecular Biology
- Pharmacology
Background:
- Hepatic stellate cell (HSC) migration is crucial in liver fibrosis development.
- Dioscin shows antifibrotic activity by inhibiting HSC proliferation, senescence, and apoptosis.
- Molecular mechanisms of dioscin's effect on HSC migration remain unclear.
Purpose of the Study:
- To elucidate the molecular mechanisms by which dioscin inhibits HSC migration.
- To investigate the role of SDC-4 in dioscin-mediated inhibition of HSC migration.
- To identify potential therapeutic targets for liver fibrosis.
Main Methods:
- iTRAQ-based quantitative proteomics to identify differentially expressed proteins in dioscin-treated HSC-T6 cells.
- Bioinformatic analyses (Gene Ontology, String, KEGG) to determine dioscin's regulatory pathways.
- Wound-healing, cell migration, and western blotting assays to validate the role of SDC-4 and related signaling molecules.
- SDC-4 knockdown using shRNA to confirm its function in HSC migration.
Main Results:
- Proteomics identified 1566 differentially expressed proteins in dioscin-treated HSC-T6 cells.
- Dioscin inhibits HSC-T6 cell migration via a SDC-4-dependent pathway.
- Dioscin affects the expression of Fn, PKCα, Src, FAK, and ERK1/2.
- SDC-4 knockdown inhibits HSC-T6 cell migration, with dioscin enhancing this effect.
Conclusions:
- SDC-4 plays a critical role in HSC-T6 cell adhesion and migration.
- Dioscin inhibits liver fibrosis by targeting the SDC-4-dependent signaling pathway.
- SDC-4 represents a potential therapeutic target for fibrotic diseases.
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