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Liquiritigenin Blocks Breast Cancer Progression by Inhibiting Connective Tissue Growth Factor Expression via Up-Regulating miR-383-5p

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The objective of this study was to investigate the effect of liquiritigenin (LQ) on breast cancer (BC) and its mechanism. After BC cell lines and normal mammary epithelial cells were… Click to show full abstract

The objective of this study was to investigate the effect of liquiritigenin (LQ) on breast cancer (BC) and its mechanism. After BC cell lines and normal mammary epithelial cells were cultured with LQ, CCK-8, and Scratch, Transwell assays and flow cytometry were applied to test the effect of LQ on cell proliferation, migration, invasion, and apoptosis. The effect of LQ on the expression of microRNA-383-5p (miR-383-5p) and connective tissue growth factor (CTGF) was measured by qRT-PCR and Western blotting. Bioinformatics prediction was used to evaluate the binding relationship between miR-383-5p and CTGF, which was verified by dual-luciferase reporter assay. After miR-383-5p and/or CTGF expression was upregulated through cell transfection, the relationship between miR-383-5p and CTGF, as well as their effects on BC, was further assessed. The results showed that LQ can significantly inhibit CTGF expression and the proliferative, migratory, and invasive abilities of BC cells, while facilitating apoptosis of BC cells and miR-383-5p expression. The inhibiting effect of LQ was dose-dependently enhanced in BC cells. Dual-luciferase reporter assay verified that miR-383-5p targeted CTGF. CTGF expression was inversely regulated by miR-383-5p. CTGF upregulation repressed the suppressive effect of miR-385-5p on BC cell development. In conclusion, LQ can inhibit CTGF expression by upregulating miR-383-5p, thereby inhibiting proliferative, migratory, and invasive abilities and promoting apoptosis of BC cells.

Keywords: expression; breast cancer; connective tissue; mir 383; ctgf; effect

Journal Title: International Journal of Toxicology
Year Published: 2022

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