Expression profiles of miRNAs in giant cell tumor of bone showed miR-187-5p and miR-1323 can regulate biological functions through inhibiting FRS2

Cancer Medicine
Yuanhan JinGuangxin Zhou

Abstract

Giant cell tumor of bone (GCTB) is considered to be a kind of borderline tumor, which has a tendency to recur and translocate. MicroRNAs are one type of small noncoding RNA, which can inhibit the translation of targeted mRNA through RNA-induced silencing complex. Microarray was conducted on three groups of tumor tissues and normal tissues from patients with GCTB, and results showed different expression profiles of miRNAs with Gene Ontology analysis and Kyoto Encyclopedia of Genes and Genomes analysis. The functions of miR-187-5p and miR-1323, which were highly expressed in GCTB, were examined by 5-ethynyl-2'-deoxyuridine (EDU), transwell, and CCK8 assays. RNAhybrid et al. (RNA prediction softwares) predicted that the two microRNAs targeted fibroblast growth factor receptor substrate 2 (FRS2), which was verified by luciferase assay and rescue experiments. miR-187-5p and miR-1323 were highly expressed in tumor tissues. They can jointly regulate the biological functions of GCTB in vitro. Luciferase assay confirmed that the two microRNAs can bind to the 3' untranslated regions (UTR) of mRNA of FRS2. And, rescue experiments verified the relationships between the two microRNAs and FRS2. There were some different-expressed microRNAs b...Continue Reading

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Methods Mentioned

BETA
PCR
electrophoresis
transfection

Software Mentioned

Targetscan
miRanda
ImageJ
RNAhybrid
Gene Clustering
Java Tree View

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