Effect of EP300 on the proliferation and migration of oral squamous carcinoma cells
Objective To investigate the expression level of EP300 in oral squamous carcinoma and its effect on the proliferation and migration of oral squamous carcinoma cells.Methods Differential expression of EP300 gene in pan-cancerous tissues and their normal tissues was collected and analysed through online database.The gene and protein expression levels of EP300 in the normal oral squa-mous epithelial cell line NOK and two different OSCC cell lines HSC3 and UM1 were detected by RT-PCR and Western blot,respec-tively;the EP300 gene was silenced in HSC3 and UM1 cell lines by plasmid transfection.Cell proliferation ability was detected by plate cloning and CCK-8,and cell migration ability was detected by scratch assay.Results Bioconductivity analysis revealed that EP300 expression was significantly upregulated in HNSC of head and neck tumors compared to paraneoplastic tissues.EP300 gene and protein expression levels were significantly higher in HSC3 and UM1 compared to the NOK group(P＜0.05),and EP300 endogenous expres-sion was relatively higher in both HSC3 and UM1 cell lines.CCK-8 proliferation assay and clone formation assay detected that the pro-liferation ability of HSC3 and UM1 was significantly reduced after EP300 silencing(P＜0.05).Cell scratch assay detected that the mi-gration ability of HSC3 and UM1 was significantly reduced after EP300 silencing(P＜0.05).Conclusion EP300 was highly expressed in oral squamous carcinoma cell lines HSC3 and UM1,and low expression of EP300 inhibited the proliferation and migration of oral squamous carcinoma cells.
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