MiRNA-200C expression in Fanconi anemia pathway functionally deficient lung cancers

Sci Rep. 2021 Feb 24;11(1):4420. doi: 10.1038/s41598-021-83884-9.

Abstract

The Fanconi Anemia (FA) pathway is essential for human cells to maintain genomic integrity following DNA damage. This pathway is involved in repairing damaged DNA through homologous recombination. Cancers with a defective FA pathway are expected to be more sensitive to cross-link based therapy or PARP inhibitors. To evaluate downstream effectors of the FA pathway, we studied the expression of 734 different micro RNAs (miRNA) using NanoString nCounter miRNA array in two FA defective lung cancer cells and matched control cells, along with two lung tumors and matched non-tumor tissue samples that were deficient in the FA pathway. Selected miRNA expression was validated with real-time PCR analysis. Among 734 different miRNAs, a cluster of microRNAs were found to be up-regulated including an important cancer related micro RNA, miR-200C. MiRNA-200C has been reported as a negative regulator of epithelial-mesenchymal transition (EMT) and inhibits cell migration and invasion by promoting the upregulation of E-cadherin through targeting ZEB1 and ZEB2 transcription factors. miRNA-200C was increased in the FA defective lung cancers as compared to controls. AmpliSeq analysis showed significant reduction in ZEB1 and ZEB2 mRNA expression. Our findings indicate the miRNA-200C potentially play a very important role in FA pathway downstream regulation.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • A549 Cells
  • Cadherins / genetics
  • Cell Line, Tumor
  • Cell Movement / genetics
  • Cell Proliferation / genetics
  • Epithelial-Mesenchymal Transition / genetics
  • Fanconi Anemia / genetics*
  • Gene Expression Regulation, Neoplastic / genetics
  • Homeodomain Proteins / genetics
  • Humans
  • Lung Neoplasms
  • MicroRNAs / genetics*
  • Signal Transduction / genetics*
  • Up-Regulation / genetics
  • Zinc Finger E-box Binding Homeobox 2 / genetics
  • Zinc Finger E-box-Binding Homeobox 1 / genetics

Substances

  • Cadherins
  • Homeodomain Proteins
  • MicroRNAs
  • Zinc Finger E-box Binding Homeobox 2
  • Zinc Finger E-box-Binding Homeobox 1