NDLI: Expression of miRNAs in non-small-cell lung carcinomas and their association with clinicopathological features.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Tafsiri, Elham Darbouy, Mojtaba Shadmehr, Mohammad B. Zagryazhskaya, Anna Alizadeh, Javad Karimipoor, Morteza
Description	Country affiliation: Iran Author Affiliation: Tafsiri E ( Department of Molecular Genetics, Science and Research Branch, Islamic Azad University, Fars, Iran.)
Abstract	Lung cancer is recognized as a leading cause of cancer-related deaths worldwide. Over the past several years, evidence emerged that microRNAs (miRNAs), a class of small non-coding RNA molecules regulating gene expression at posttranscriptional level, play an important role in cell functioning, as well as in human diseases. Here, we analyzed expression of miR-15a/16, miR-21, miR-34a, miR-126, miR-128, and miR-210 at transcriptional level in 30 non-small-cell lung carcinoma (NSCLC) tumor tissues compared to the matched adjacent normal tissues and their correlation with clinicopathological features of the patients. Samples were collected from the NSCLC patients undergoing surgery before radiotherapeutic or chemotherapeutic treatment. Expression levels of miRNAs were assessed by TaqMan RT-PCR assay. The data obtained in this study were processed using REST 2009 and SPSS statistical software. The graphs were designed by GraphPad prism 5.0. In tumor samples, we found downregulation of miR-15a/16 (50/83.3%), miR-34a (83.3%), miR-126 (70%), and miR-128 (63.3%). At the same time, miR-21 and miR-210 were upregulated by 53.3 and 66.6% in cancer tissue versus matched adjacent normal tissues, respectively. No significant correlation was found between the expression levels of miR-15a/16, miR-21, miR-34a, miR-126, miR-128, and miR-210 and lymph node, tumor size, sex, and smoking. However, the study demonstrated a correlation between a change in expression of miR-15, miR-16, miR-34a, miR-126, and miR-210 compared to normal tissues and TNM staging (P < 0.05). Furthermore, miR-126 expression level was different in adenocarcinomas and squamous cell carcinoma (SCC) subtype (P < 0.1). Detailed analysis revealed significant change in expression of miR-15a/16, miR-34a, miR-126, and miR-210 in NSCLC tumor samples indicating involvement of these miRNAs in lung cancer pathogenesis. miR-210 demonstrated the most consistent increase in tumor tissues between different patients, suggesting its potential significance for NSCLC.
File Format	HTM / HTML
ISSN	10104283
Issue Number	3
Volume Number	36
e-ISSN	14230380
Journal	Tumor Biology
Language	English
Publisher	Springer
Publisher Date	2015-03-01
Publisher Place	Netherlands
Access Restriction	Subscribed
Subject Keyword	Discipline Medicine__semicolon__oncology Carcinoma, Non-small-cell Lung Genetics Pathology Lung Neoplasms Micrornas Adenocarcinoma Diagnosis Metabolism Adult Aged Aged, 80 And Over Carcinoma, Squamous Cell Down-regulation Female Gene Expression Profiling Methods Gene Expression Regulation, Neoplastic Humans Lymph Nodes Male Biosynthesis Middle Aged Neoplasm Staging Smoking Adverse Effects Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Medicine Cancer Research

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