Fig. 4: CRNDE was involved in epigenetic repression mediated by EZH2, SUZ12, and SUV39H1 on multiple tumor suppressor genes.

qPCR was performed to measure CRNDE levels in immunoprecipitates in Bel-100 (a) and Huh-7 cells (b). CRNDE expression levels were displayed as fold changes relative to IgG immunoprecipitate. c RNA pull-down assay was applied to capture the proteins that bound CRNDE in Bel-100, and protein expression levels of HuR, EZH2, SUZ12, and SUV39H1 were determined by WB. HuR and AR were used as positive control. d, e qPCR analysis was performed to measure the relative expression levels of multiple tumor suppressor genes in Bel-100 (d) and Huh-7 cells (e). f, g HCC cells were transfected with lentiviruses encoding siRNAs against EZH2 (f), SUZ12 (g), SUV39H1 (h), or negative control and the protein expression levels of the silenced proteins together with BIK, LATS2, p27KIP1, and CELF2 were determined by WB. i–l HCC cells were transfected with shCRNDE or shNC, and ChIP-qPCR was used to identify the enrichment of SUZ12, SUV39H1, EZH2, H3K27me3, and H3K9me3 at promoter region of BIK (i), LATS2 (j), p27KIP1 (k), CELF2 (l), and GAPDH (m), respectively. The data were shown as Mean ± SD based on at least three independent experiments. *P < 0.05, **P < 0.01 and ***P < 0.001.