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• W2963698980 abstract "Due to the high incidence of liver cancer, chemoradiotherapy and prognosis of liver cancer are a primary focus of medical research. microRNAs (miRNAs/miRs) serve crucial roles in resistance to chemotherapy and radiotherapy. The aim of the present study was to investigate the effects of miR-101 on the chemotherapeutic efficacy of cisplatin (CDDP) in liver cancer. First, human liver cancer cells (HepG2) were transfected with a miR-101 mimic or miR-101 inhibitor to bidirectionally regulate the expression of miR-101. Cell proliferation, apoptosis, intracellular reactive oxygen species and comet assay results indicated that the upregulation of miR-101 sensitized HepG2 cells to CDDP, and downregulation of miR-101 reduced chemosensitivity. A xenograft mouse model further confirmed that miR-101 overexpression increased CDDP sensitivity in liver cancer. Luciferase reporter and western blotting assays demonstrated that transfection of the miR-101 mimic markedly reduced activity of the DNA-dependent protein kinase catalytic subunit/protein kinase B/mammalian target of rapamycin (DNA-PKcs/Akt/mTOR) pathway and increased expression of apoptotic protein caspase 3, which is induced by CDDP treatment. By contrast, miR-101 inhibitors partially reversed these changes. Moreover, the miR-101 mimic suppressed activity of the nuclear factor-κB (NF-κB) pathway, leading to increased susceptibility of HepG2 cells to chemotherapeutic agents. In conclusion, miR-101 overexpression augmented cytotoxicity and reduced chemoresistance to CDDP in HepG2 cells, and this was associated with negative regulation of DNA-PKcs/Akt/NF-κB signaling." @default.
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• W2963698980 date "2019-07-26" @default.
• W2963698980 modified "2023-10-15" @default.
• W2963698980 title "MicroRNA‑101 modulates cisplatin chemoresistance in liver cancer cells via the DNA‑PKcs signaling pathway" @default.
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• W2963698980 doi "https://doi.org/10.3892/ol.2019.10674" @default.
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