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- W2953672955 abstract "Retinoblastoma (RB) is a common malignant tumor in children. Lidocaine is a local anesthetic and anti‑arrhythmic drug, and has been reported to possess anti‑tumor properties. MicroRNAs (miRs) are a group of endogenous small noncoding RNAs that have important roles in various biological processes via actions on target genes. The aim of the present study was to investigate the effect of lidocaine on retinoblastoma in vitro and in vivo. CCK‑8 assay and flow cytometry assay were used to measure cell viability and apoptosis. The relationship between miR‑520a‑3p and EGFR was predicted and confirmed by TargetScan and dual‑luciferase reporter assay. For in vivo study, tumor xenograft was performed. In addition, gene and protein expression was detected using reverse transcription‑quantitative polymerase chain reaction and western blotting respectively. In the present study, it was observed that lidocaine inhibited the proliferation and induced the apoptosis of RB cells. miR‑520a‑3p was reported to be downregulated in RB tissues and cell lines; treatment with lidocaine increased the expression of miR‑520a‑3p in RB cells. The human epidermal growth factor receptor (EGFR) was identified as a direct target of miR‑520a‑3p, and its expression was negatively associated with that of miR‑520a‑3p. Additionally, EGFR was upregulated in RB tissues and cell lines; treatment with lidocaine decreased the expression of EGFR in RB cells. Furthermore, compared with treatment with lidocaine alone, the combination of transfection with miR‑520a‑3p inhibitor and lidocaine treatment significantly decreased the expression of miR‑520a‑3p, increased EGFR expression, promoted RB cell proliferation and reduced the apoptosis of cells in vitro, and increased tumor volume and weight in vivo. The results indicated that lidocaine reduced the proliferation and induced the apoptosis of RB cells by decreasing EGFR expression via the upregulation of miR‑520a‑3p, suggesting that the miR‑520a‑3p/EGFR axis may be a novel therapeutic target in the treatment of RB." @default.
- W2953672955 created "2019-07-12" @default.
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- W2953672955 date "2019-06-06" @default.
- W2953672955 modified "2023-10-18" @default.
- W2953672955 title "Lidocaine inhibits the progression of retinoblastoma in�vitro and in�vivo by modulating the miR‑520a‑3p/EGFR axis" @default.
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- W2953672955 doi "https://doi.org/10.3892/mmr.2019.10363" @default.
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