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MicroRNA-134 reverses multidrug resistance in human lung adenocarcinoma cells by targeting FOXM1

Jipeng Li1, Ying Chen1, Mingwei Jin1

  • 1Department of Central Laboratory, Yinzhou People's Hospital, Ningbo, Zhejiang 315040, P.R. China.

Oncology Letters
|April 30, 2017
PubMed

Insights

MicroRNA-134 (miR-134) is downregulated in lung adenocarcinoma, impacting multidrug resistance (MDR). Restoring miR-134 may enhance chemotherapy effectiveness against lung adenocarcinoma by targeting key MDR genes.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Multidrug resistance (MDR) significantly hinders chemotherapy efficacy in lung adenocarcinoma.
  • MicroRNA-134 (miR-134) is known to regulate proliferation, apoptosis, and invasion in lung adenocarcinoma, but its role in MDR is not well understood.

Purpose of the Study:

  • To investigate the role of miR-134 in the multidrug resistance of lung adenocarcinoma.
  • To identify the functional targets of miR-134 involved in MDR.

Main Methods:

  • Quantitative analysis of miR-134 expression in A549/cisplatin MDR cells versus A549 parental cells.
  • Assessment of miR-134's influence on the sensitivity of lung adenocarcinoma cells to anticancer drugs.
  • Identification of downstream targets, including forkhead box M1 (FOXM1) and multidrug resistance-associated protein 1 (MRP1).

Main Results:

  • miR-134 expression was significantly downregulated in cisplatin-resistant lung adenocarcinoma cells.
  • miR-134 was found to modulate the sensitivity of lung adenocarcinoma cells to chemotherapy drugs.
  • FOXM1 and MRP1 were confirmed as functional targets regulated by miR-134.

Conclusions:

  • miR-134 plays a crucial role in regulating multidrug resistance in lung adenocarcinoma.
  • The findings suggest that miR-134 could be a potential therapeutic target for overcoming MDR in lung adenocarcinoma.
  • Targeting miR-134 may offer a novel strategy to improve chemotherapy outcomes for lung adenocarcinoma patients.
Keywords:
forkhead box M1lung adenocarcinomamicroRNA-134multidrug resistancemultidrug resistance-associated protein 1

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