Research Paper Volume 12, Issue 17 pp 17634—17646

DUSP4 directly deubiquitinates and stabilizes Smad4 protein, promoting proliferation and metastasis of colorectal cancer cells

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Figure 2. DUSP4 promoted metastasis and proliferation of colorectal cancer cells in vitro. (A) Western blot analysis of DUSP4 expression in FHC, LOVO, SW480, SW620, HCT116, and DLD1. (B) qRT-PCR analysis of DUSP4 expression in FHC, LOVO, SW480, SW620, HCT116, and DLD1. (C) Knockdown treatment of three designed siRNAs in SW480 cells. (D) DUSP4 protein expression of DUSP4 knockdown-treated SW480 cells and DUSP4 overexpression-treated HCT116 cells. (E) Cell proliferation analysis of DUSP4 knockdown-treated SW480 cells. (F) Cell proliferation analysis of DUSP4 overexpression-treated HCT116 cells. (G) Colony formation analysis of DUSP4 knockdown-treated SW480 cells and DUSP4 overexpression-treated HCT116 cells. (H) Western blot analysis of cell proliferation-related biomarkers expression in DUSP4 knockdown-treated SW480 cells and DUSP4 overexpression-treated HCT116 cells. **P<0.01, ***P<0.001.