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Han, Sichong; Wang, Zhe; Liu, Jining; Wang, Hui-Min David; Yuan, Qipeng
Biochemical pharmacology, June 2021, 2021-06-00, Letnik: 188Journal Article
Display omitted The antitumor properties of cruciferous vegetables are mainly due to their high content of isothiocyanates, and sulforaphane (SFA) is the most well-known compound. The aim of this study was to determine the mechanism of SFA inhibiting gastric cancer (GC) progression. After verifying SFA suppressing GC growth in vivo, we utilized the GSE79973 and GSE118916 datasets to identify the GC development signatures that overlap with the RNA-seq analysis in SFA-treated AGS cells. GSEA of the RNA-seq data indicated that SFA regulation of GC progression was related to extracellular matrix and collagens; thus, we identified COL3A1 and COL5A1 as the targets of SFA, which functioned as oncogenes. We found positive correlations between COL3A1 and COL5A1 expression in GC cells, and confirmed that miR-29a-3p is the common regulator of their expression. RNA immunoprecipitation assays based on Ago2, Dicer, and exportin-5 showed that SFA could promote mature miR-29a-3p generation. We also proved that SFA inactivated the Wnt/β-catenin pathway in GC cells in a miR-29a-3p-dependent manner. Overall, SFA boosts miR-29a-3p maturation to downregulate COL3A1 and COL5A1 and inactivate the Wnt/ β -catenin pathway to suppress GC progression.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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