Expression level of microRNA-200c is associated with cell morphology in vitro and histological differentiation through regulation of ZEB1/2 and E-cadherin in gastric carcinoma

Oncol Rep. 2018 Jan;39(1):91-100. doi: 10.3892/or.2017.6093. Epub 2017 Nov 10.


Scirrhous type gastric cancer is characterized by diffuse infiltration of poorly differentiated adenocarcinoma cells and poor prognosis. Although association of poorly differentiated histology with reduction in E-cadherin expression, as well as association of microRNA (miR)-200c with E-cadherin through regulation of ZEB1/2, has been reported, participation of miR-200c in gastric carcinogenesis is not fully understood. We used 6 cell lines originating from gastric cancers, and investigated levels of miR-200c along with its target mRNAs ZEB1/2 and E-cadherin by qRT-PCR. ZEB1 and E-cadherin protein expression was also assessed via western blotting. Furthermore, we investigated the expression levels of miR‑200c by in situ hybridization, along with the expression of ZEB1 and E-cadherin by immunohistochemistry, in 97 gastric adenocarcinoma tissues. Inverse correlation between miR‑200c and ZEB1 levels were obtained by qRT-PCR in cell lines (P<0.05). Cell lines with low miR-200c and high ZEB1 exhibited low E-cadherin expression in both qRT-PCR and western blotting, and exhibited spindle-shaped morphology, in contrast to round cell morphology in those cell lines with high miR-200c levels. Inverse correlations were also obtained between miR-200c and ZEB1 as well as between ZEB1 and E-cadherin levels in tissue samples (P<0.001). Cancer tissues with low miR-200c, high ZEB1, and low E-cadherin expression were associated with poorly differentiated histology, in contrast to tubular form in cancers with high miR-200c expression levels (P<0.001). Our data revealed that downregulation of miR-200c primarily regulated cell morphology by downregulation of E-cadherin through upregulation of ZEB1, leading to poorly differentiated histology in gastric cancer.

MeSH terms

  • Adenocarcinoma, Scirrhous / genetics
  • Adenocarcinoma, Scirrhous / metabolism
  • Adenocarcinoma, Scirrhous / pathology*
  • Adult
  • Aged
  • Aged, 80 and over
  • Antigens, CD
  • Cadherins / genetics
  • Cadherins / metabolism*
  • Cell Differentiation
  • Cell Line, Tumor
  • Epithelial-Mesenchymal Transition
  • Female
  • Gene Expression Regulation, Neoplastic
  • Humans
  • In Vitro Techniques
  • Male
  • MicroRNAs / genetics*
  • Middle Aged
  • Stomach Neoplasms / genetics
  • Stomach Neoplasms / metabolism
  • Stomach Neoplasms / pathology*
  • Tumor Burden
  • Zinc Finger E-box Binding Homeobox 2 / genetics
  • Zinc Finger E-box Binding Homeobox 2 / metabolism*
  • Zinc Finger E-box-Binding Homeobox 1 / genetics
  • Zinc Finger E-box-Binding Homeobox 1 / metabolism*


  • Antigens, CD
  • CDH1 protein, human
  • Cadherins
  • MIRN200 microRNA, human
  • MicroRNAs
  • ZEB1 protein, human
  • ZEB2 protein, human
  • Zinc Finger E-box Binding Homeobox 2
  • Zinc Finger E-box-Binding Homeobox 1