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  • Title: Downregulation of lncRNA ANRIL inhibits proliferation, induces apoptosis, and enhances radiosensitivity in nasopharyngeal carcinoma cells through regulating miR-125a.
    Author: Hu X, Jiang H, Jiang X.
    Journal: Cancer Biol Ther; 2017 May 04; 18(5):331-338. PubMed ID: 28402230.
    Abstract:
    Increasing evidence demonstrated that long non-coding RNA ANRIL serves as a fatal oncogene in many cancers, including nasopharyngeal carcinoma (NPC). However, little is known whether ANRIL regulated NPC cell radioresistance. Quantitative real-time PCR (qRT-PCR) was performed to examine the expression of lncRNA ANRIL and miR-125a in NPC tissues and cell lines. MTT assay was conducted to measure the cell viability of CNE2 and HONE1 cells. The apoptotic rate of CNE2 and HONE1 cells was determined by flow cytometry analysis. Colony survival was determined by clonogenic assay. Luciferase reporter assay was performed to verity the direct target of miR-125a. LncRNA ANRIL was evidently elevated in NPC tissues and cell lines. ANRIL inhibition suppressed proliferation, induced apoptosis, and enhanced radiosensitivity in NPC. Moreover, ANRIL could negatively modulate miR-125a expression. Furethermore, ANRIL upregulation reserved the inhibited proliferation, induced apoptosis, and enhanced radiosensitivity triggered by miR-125a overexpression. The expression of lncRNA ANRIL was upregulated in NPC tissues and cells. Moreover, knockdown of ANRIL repressed proliferation, promoted apoptosis, and improved radiosensitivity in NPC via functioning as a miR-125a sponge.
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