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Serum MicroRNA-150 Predicts Prognosis for Early-Stage Non-Small Cell Lung Cancer and Promotes Tumor Cell Proliferation by Targeting Tumor Suppressor Gene SRCIN1

Overview
Publisher Wiley
Specialty Pharmacology
Date 2017 Sep 12
PMID 28891208
Citations 18
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Abstract

This integrative multistage study was aimed to identify circulating microRNAs (miRNAs) as prognostic biomarkers and investigate the treatment target for early-stage non-small cell lung cancer (NSCLC) patients. In stage I-II NSCLC patients, we screened and validated the miRNA ratio signatures predictive of prognosis in serum. In tumor, we found that the expression of miR-150 in identified miRNA signatures was also associated with survival. Increased miR-150 expression promoted NSCLC cell proliferation and migration and vice versa. Specific mRNA cleavage sites targeted by endogenous miR-150 in 3' untranslated region (UTR) of SRCIN1 was identified by utilizing our recently developed novel Stem-Loop-Array reverse-transcription polymerase chain reaction (SLA-RT-PCR) assay. The blocking action of miR-150 resulted in repressed NSCLC cell growth in vitro and knockdown of miR-150 caused substantial tumor volume reduction in vivo. Our findings suggest that miR-150 binding on specific recognition sites in 3' UTR of tumor suppressor gene SRCIN1 present a potential therapeutic target for NSCLC.

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