Carcinogenesis, Teratogenesis & Mutagenesis ›› 2016, Vol. 28 ›› Issue (2): 107-110.doi: 10.3969/j.issn.1004-616x.2016.02.005

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A case-control study on the risk of esophageal carcinoma and miR-338 cluster

GAO Zhikui, LIU Ran, YIN Lihong, PU Yuepu   

  1. Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China
  • Received:2015-11-17 Revised:2016-01-04 Online:2016-03-31 Published:2016-03-31

Abstract: OBJECTIVE: To investigate the expression level of miR-338 cluster in esophageal carcinoma and identify the relationship between miR-338 cluster and esophageal carcinoma. METHODS: A total of 86 cases of patients with confirmed esophageal carcinoma were selected, real time RT-PCR were performed to detect the expression of hsa-miR-338-3p, hsa-miR-338-5p and hsa-miR-657. We used paired t-test to analyze the expression of miRNA in tumor and adjacent non-tumor tissues, Pearson correlation analysis to examine the correlation of the expression of each miRNA and logistic regression analysis to analyze the effect of abnormal expression of miRNAs on the risk of esophageal cancer. RESULTS: hsa-miR-338-3p and hsa-miR-338-5p were downregulated in tumor tissues compared with adjacent non-tumor tissues (P<0.05), and no statical difference was found of the expression of hsa-miR-657 between the two tissues (P>0.05). The expression of hsa-miR-338-3p and hsa-miR-338-5p were significantly correlated (r=0.754, P<0.05), and low expression of hsa-miR-338-5p was the risk factor for esophageal carcinoma (OR=1.264, P<0.05). CONCLUSION: miR-338 cluster may play an important role in the formation process of esophageal carcinoma. In addition hsa-miR-338-5p may represent the miR-338 cluster to be a useful biomarker for diagnosis.

Key words: miR-338, cluster, esophageal carcinoma, biomarker

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