MiR-1179 is downregulated in cervical cancer and its overexpression suppresses cancer cells invasion by targeting CHAF1A/ZEB1

Acta Biochim Pol. 2021 Mar 19;68(2):193-199. doi: 10.18388/abp.2020_5499.

Abstract

The anticancer effect of miR-1179 has been extensively studied in many tumors. The mechanism of miR-1179 action in cervical cancer, however, remains largely unknown. In the present study, miR-1179 was downregulated in both cervical cancer cell lines and cancer tissues. In addition, miR-1179 mimic suppressed cancer cells invasion and epithelial-mesenchymal transition (EMT) in cervical cancer SiHa and Caski cells. We found that chromatin assembly factor 1 subunit A (CHAF1A) might be a direct target of miR-1179 and could be regulated by miR-1179. Furthermore, CHAF1A shRNA suppressed the cervical cancer cells invasion and the expression of EMT-promoted proteins. Reversely, CHAF1A overexpression not only promoted cervical cancer cells invasion but also upregulated the level of Zinc finger E-box binding protein 1 (ZEB1), an EMT-related protein. The induction of ZEB1 could be counteracted by miR-1179 overexpression. It was observed that in cervical cancer patients' tissues, miR-1179 was downregulated while the pathway of CHAF1A/ZEB1 was upregulated. In summary, our research indicated that the miR-1179 might regulate CHAF1A/ZEB1 axis and inhibit the invasion of cervical cancer cells.

MeSH terms

  • Cell Line, Tumor
  • Chromatin Assembly Factor-1 / genetics
  • Chromatin Assembly Factor-1 / metabolism
  • Down-Regulation
  • Epithelial-Mesenchymal Transition / genetics
  • Female
  • Gene Expression Regulation, Neoplastic
  • Gene Knockdown Techniques / methods
  • Humans
  • MicroRNAs / genetics
  • MicroRNAs / metabolism*
  • Neoplasm Invasiveness / genetics
  • Uterine Cervical Neoplasms / genetics*
  • Uterine Cervical Neoplasms / pathology
  • Zinc Finger E-box-Binding Homeobox 1 / genetics*
  • Zinc Finger E-box-Binding Homeobox 1 / metabolism

Substances

  • CHAF1A protein, human
  • Chromatin Assembly Factor-1
  • MIRN1179 microRNA, human
  • MicroRNAs
  • ZEB1 protein, human
  • Zinc Finger E-box-Binding Homeobox 1