microRNA expression profiling in multidrug resistance of the 5‑Fu‑induced SGC‑7901 human gastric cancer cell line

Mol Med Rep. 2013 May;7(5):1506-10. doi: 10.3892/mmr.2013.1384. Epub 2013 Mar 20.

Abstract

The present study aimed to identify microRNA (miRNA) expression profiles associated with multidrug resistance (MDR) in gastric carcinoma. A 5‑fluorouracil (5‑Fu)‑induced MDR gastric cancer cell line was selected and miRNA expression profiling of the cell line was conducted following exposure to 5‑Fu. The miRNA expression profiles between the parental and resistant gastric cancer cells were analyzed by Human miRNA OneArray® v3 and the results were confirmed by quantitative real‑time RT‑PCR. The expression of 9 miRNAs (miR‑10b, ‑22, ‑31, ‑133b, ‑190, ‑501, ‑615, ‑501‑5p and ‑615‑5p) was upregulated while the expression of 18 additional miRNAs (miR‑32, ‑197, ‑210, ‑766, ‑1229, ‑1238, ‑3131, ‑3149, ‑1224‑3p, ‑3162‑3p, ‑532, ‑877, ‑4701‑5p, ‑5096, ‑4728‑3p, ‑1273d, ‑486‑3p and‑4763‑3p) was downregulated in the SGC‑7901/5‑Fu cell line compared with its parental cell line. The results indicate that miRNA expression correlates with MDR in gastric cancer and may serve as biomolecular targets for MDR elimination.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • ATP Binding Cassette Transporter, Subfamily B, Member 1 / metabolism
  • Blotting, Western
  • Cell Line, Tumor
  • Cell Shape / drug effects
  • Drug Resistance, Multiple / drug effects
  • Drug Resistance, Multiple / genetics*
  • Drug Resistance, Neoplasm / drug effects
  • Drug Resistance, Neoplasm / genetics*
  • Fluorouracil / pharmacology*
  • Gene Expression Profiling*
  • Gene Expression Regulation, Neoplastic / drug effects*
  • Humans
  • Inhibitory Concentration 50
  • MicroRNAs / genetics*
  • MicroRNAs / metabolism
  • Oligonucleotide Array Sequence Analysis
  • RNA, Messenger / genetics
  • RNA, Messenger / metabolism
  • Real-Time Polymerase Chain Reaction
  • Reproducibility of Results
  • Stomach Neoplasms / genetics*
  • Stomach Neoplasms / pathology

Substances

  • ATP Binding Cassette Transporter, Subfamily B, Member 1
  • MicroRNAs
  • RNA, Messenger
  • Fluorouracil