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Epigenetic alterations of the Igf2 promoter and the effect of miR‑483‑5p on its target gene expression in esophageal squamous cell carcinoma

  • Authors:
    • Han Zhang
    • Xiaowei Shi
    • Weidong Chang
    • Yingying Li
    • Li Wang
    • Linsong Wang
  • View Affiliations / Copyright

    Affiliations: School of Life Sciences and Biotechnology, Sanquan College of Xinxiang Medical University, Xinxiang, Henan 453007, P.R. China, College of Life Science, Henan Normal University, Xinxiang, Henan 453007, P.R. China
    Copyright: © Zhang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 2251-2256
    |
    Published online on: November 22, 2017
       https://doi.org/10.3892/mmr.2017.8134
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Abstract

Esophageal squamous cell carcinoma (ESCC) is one of the most widespread malignancies in China. MicroRNAs (miRNAs/miRs) are endogenous evolutionarily‑conserved small non‑coding RNAs that are able to regulate ESCC formation and deterioration by negatively regulating specific target genes. In the present study, the expression levels of miR‑483‑5p and its associated mRNAs were measured by quantitative polymerase chain reaction (PCR) analysis, and the methylation levels of the insulin‑like growth factor 2 (Igf2) promoter were detected via the methylation‑specific PCR method in serum and tissues from patients with ESCC. The results demonstrated that the expression level of miR‑483‑5p was significantly upregulated in preoperative serum and cancer tissues from patients with ESCC (P<0.01), and the miR‑483‑5p expression levels were correlated with the tumor, node, metastasis stage (P<0.05) and lymph node metastasis (P<0.05). In addition, the mRNA levels of miR‑483‑5p target genes (Rho GDP dissociation inhibitor α, activated leukocyte cell adhesion molecule, and suppressor of cytokine signaling 3) in cancer tissues were significantly decreased compared with adjacent non‑cancerous tissues. These results indicated that miR‑483‑5p and its target genes may be involved in the developmental process of ESCC. The Igf2 levels in cancer tissues were significantly increased compared with adjacent non‑cancerous tissues (P<0.01). Additionally, the methylation levels of the Igf2 promoter region were 31.82 and 54.55% in cancer tissues and adjacent non‑cancerous tissues, respectively, suggesting that low methylation of the Igf2 gene promoter region may promote the expression of Igf2 and miR‑483‑5p; this, in turn, induces the degradation of miR‑483‑5p target genes, and leads to the upregulation of oncogenes and the downregulation of tumor suppressors, which promotes the development of ESCC.
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Copy and paste a formatted citation
Spandidos Publications style
Zhang H, Shi X, Chang W, Li Y, Wang L and Wang L: Epigenetic alterations of the Igf2 promoter and the effect of miR‑483‑5p on its target gene expression in esophageal squamous cell carcinoma. Mol Med Rep 17: 2251-2256, 2018.
APA
Zhang, H., Shi, X., Chang, W., Li, Y., Wang, L., & Wang, L. (2018). Epigenetic alterations of the Igf2 promoter and the effect of miR‑483‑5p on its target gene expression in esophageal squamous cell carcinoma. Molecular Medicine Reports, 17, 2251-2256. https://doi.org/10.3892/mmr.2017.8134
MLA
Zhang, H., Shi, X., Chang, W., Li, Y., Wang, L., Wang, L."Epigenetic alterations of the Igf2 promoter and the effect of miR‑483‑5p on its target gene expression in esophageal squamous cell carcinoma". Molecular Medicine Reports 17.2 (2018): 2251-2256.
Chicago
Zhang, H., Shi, X., Chang, W., Li, Y., Wang, L., Wang, L."Epigenetic alterations of the Igf2 promoter and the effect of miR‑483‑5p on its target gene expression in esophageal squamous cell carcinoma". Molecular Medicine Reports 17, no. 2 (2018): 2251-2256. https://doi.org/10.3892/mmr.2017.8134
Copy and paste a formatted citation
x
Spandidos Publications style
Zhang H, Shi X, Chang W, Li Y, Wang L and Wang L: Epigenetic alterations of the Igf2 promoter and the effect of miR‑483‑5p on its target gene expression in esophageal squamous cell carcinoma. Mol Med Rep 17: 2251-2256, 2018.
APA
Zhang, H., Shi, X., Chang, W., Li, Y., Wang, L., & Wang, L. (2018). Epigenetic alterations of the Igf2 promoter and the effect of miR‑483‑5p on its target gene expression in esophageal squamous cell carcinoma. Molecular Medicine Reports, 17, 2251-2256. https://doi.org/10.3892/mmr.2017.8134
MLA
Zhang, H., Shi, X., Chang, W., Li, Y., Wang, L., Wang, L."Epigenetic alterations of the Igf2 promoter and the effect of miR‑483‑5p on its target gene expression in esophageal squamous cell carcinoma". Molecular Medicine Reports 17.2 (2018): 2251-2256.
Chicago
Zhang, H., Shi, X., Chang, W., Li, Y., Wang, L., Wang, L."Epigenetic alterations of the Igf2 promoter and the effect of miR‑483‑5p on its target gene expression in esophageal squamous cell carcinoma". Molecular Medicine Reports 17, no. 2 (2018): 2251-2256. https://doi.org/10.3892/mmr.2017.8134
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