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MiRNA-27a-3p Induces Temozolomide Resistance in Glioma by Inhibiting NF1 Level

Overview
Journal Am J Transl Res
Specialty General Medicine
Date 2020 Sep 11
PMID 32913547
Citations 5
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Abstract

To elucidate the role of miRNA-27a-3p in inducing Temozolomide (TMZ) resistance in glioma and the underlying mechanism. Relative levels of miRNA-27a-3p and NF1 in glioma tissues and peritumoral ones were detected. In addition, their levels in TMZ-sensitive and TMZ-resistant glioma tissues were examined as well. TMZ-resistant glioma cell lines SHG44-TG and U87-TR were used for experiments. Relative levels of miRNA-27a-3p and NF1 in TMZ-resistant glioma cells and their parental cells were determined. Subsequently, regulatory effects of miRNA-27a-3p on IC value of TMZ, viability and migratory ability in SHG44-TG and U87-TR cells were assessed. The interaction between miRNA-27a-3p and NF1 was evaluated by luciferase assay and Western blot. MiRNA-27a-3p was upregulated in glioma tissues than controls, especially TMZ-resistant ones, whereas NF-1 displayed a negative correlation to miRNA-27a-3p as its downstream target. Overexpression of miRNA-27a-3p increased IC value of TMZ, viability and migratory ability in SHG44-TG and U87-TR cells. Regulatory effects of miRNA-27a-3p on phenotypes of TMZ-resistant glioma cells were abolished by overexpression of NF1. MiRNA-27a-3p induces TMZ resistance in glioma by negatively regulating NF1 level.

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