Collectively, these results demonstrate that EZH2 inhibition enhances HCC eradication by NK cells and that EZH2 functions, in part, as an oncogene by inhibiting immune response.
Among these dysregulated RNAs, three DELs (AP002478.1, HTR2A-AS1, and ERVMER61-1) and six DEGs (enhancer of zeste homolog 2 [<i>EZH2</i>], kinesin family member 23 [<i>KIF23</i>], chromobox 2 [<i>CBX2</i>], centrosomal protein 55 [<i>CEP55</i>], cell division cycle 25A [<i>CDC25A</i>], and claspin [<i>CLSPN</i>]) were used for construct a prognostic signature for HCC overall survival (OS), and performed well in HCC OS (adjusted <i>P</i><0.0001, adjusted hazard ratio = 2.761, 95% confidence interval = 1.838-4.147).
lncRNAs play important roles in HCC, future studies should verify whether large intergenic noncoding ULK4P2 functions by combining with enhancer of zeste homolog 2 in HCC.
Thus, our findings suggest for the first time that miR-26a promotes invasion/metastasis by inhibiting PTEN and inhibits cell proliferation by repressing EZH2 in HCC.
c-Myc collaborates with EZH2-containing PRC2 complex in silencing tumor-suppressive miRNAs during hepatocarcinogenesis and provides promising therapeutic candidates for human HCC.
Enhancer of zeste homolog 2 (EZH2), an oncogene responsible for the tri-methylation of histone H3 at lysine 27 (H3K27me3), was identified to be overexpressed in approximate 70-90% of HCC cases, which prompted us to investigate whether or how AR regulates EZH2 expression.
Mechanism, RNA immunoprecipitation (RIP) and Chromatin immunoprecipitation (ChIP) assays showed that by interacting with enhancer of zeste homolog 2 (EZH2), HNF1A-AS1 promoted HCC cell proliferation by repressing the NKD1 and p21 expression.
The aims of this study were to: validate the use of the immunohistochemical (IHC) markers glutamine synthetase (GS), glypican-3 (GPC3), heat shock protein-70 (HSP70) and enhancer of zeste homologue 2 (EZH2) in liver biopsies for the differential diagnosis between small hepatocellular carcinoma (HCC) and non-neoplastic liver nodules, with special attention to <10-mm nodules; and assess the actual sensitivity and specificity of the single markers, and their combination, in needle biopsies.
Increased expression of EZH2 is frequently detected in various cancers including hepatocellular carcinoma (HCC), which is associated with the silencing of tumor suppressor genes.
Immunohistochemical assays were conducted to study the relationships between miR-26a expression and enhancer of zeste homolog 2 (EZH2) and E-cadherin expression in human HCC samples.
The epigenetic modificator EZH2 can suppress the expression of immune checkpoint inhibitor PD-L1 by directly upregulating the promoter H3K27me3 levels of CD274 and IRF1 in hepatoma cells, and might serve as a potential therapeutic target for combination of immunotherapy for immune-activated HCC.