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Year : 2018  |  Volume : 14  |  Issue : 9  |  Page : 295-298

Expression of microRNAs-106b in nonsmall cell lung cancer

1 Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science, Tianjin 300192, China
2 Department of Inner Medicine, Shandong Cancer Hospital and Institute, Jinan 250117, Shandong Province, China
3 The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning 530023, Guangxi Province, China

Correspondence Address:
Xiao-Chun Wang
Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science, Tianjin 300192
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0973-1482.235344

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Aim: To explore the expression of microRNA-106b (miRNA-106b) in nonsmall cell lung cancer (NSCLC). Settings and Design: miRNAs are short regulatory RNAs that negatively modulate gene expression at the posttranscriptional level, and are deeply involved in the pathogenesis of several types of cancer. miRNA-106b has been shown to play an oncogenic role in tumor progression. The expression of miRNA-106b is detected in this study. Subjects and Methods: Quantitative reverse transcription polymerase chain reaction and Northern blotting were used to detect the expression level of miRNA-106b in 200 NSCLC samples. Statistical Analysis Used: All statistical analyses were performed using SPSS 16.0 software. Results were statistically evaluated using the Kruskal–Wallis test and Mann–Whitney U-test. Survival curves were estimated by the Kaplan–Meier method and P < 0.05 was considered to be statistically significant. Results: miRNA-106b expression is increased in NSCLC tissues. Statistical analysis showed that overexpression of miRNA-106b was strongly associated with lymph node metastasis, stage of tumor node metastasis classification, and poor prognosis. Moreover, there was a significant difference in the miRNA-106b expression levels between smoking and nonsmoking patients. Multivariate Cox regression analysis showed that miRNA-106b was an independent prognostic factor for NSCLC patients. Conclusions: These data suggest that aberrantly expressed miRNA-106b may contribute to the development of NSCLC.

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