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Mechanisms of doxorubicin resistance in hepatocellular carcinoma

Josiah Cox1, Steven Weinman1

  • 1Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA.

Hepatic Oncology
|March 22, 2016
PubMed

Insights

Hepatocellular carcinoma (HCC) shows resistance to doxorubicin chemotherapy due to multidrug resistance pumps and altered cell death pathways. Strategies to overcome this resistance are crucial for improving HCC treatment outcomes.

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacology

Background:

  • Hepatocellular carcinoma (HCC) is a prevalent cancer with limited response to chemotherapy.
  • Intra-arterial doxorubicin can induce tumor shrinkage in HCC, but resistance often develops.
  • Mechanisms of doxorubicin resistance in HCC are complex and multifactorial.

Purpose of the Study:

  • To review the current understanding of doxorubicin resistance mechanisms in HCC.
  • To explore potential strategies for chemosensitization in HCC treatment.

Main Methods:

  • Literature review of studies on doxorubicin resistance in HCC.
  • Analysis of molecular mechanisms including drug efflux pumps, topoisomerase alterations, and programmed cell death.
  • Investigation of the role of miRNA expression and stem cell phenotype in resistance.

Main Results:

  • Doxorubicin resistance in HCC involves increased multidrug resistance efflux pumps.
  • Alterations in the topoisomerase drug target and modulation of programmed cell death pathways contribute to resistance.
  • MicroRNA (miRNA) expression changes and stem cell-like properties in HCC cells exacerbate resistance.

Conclusions:

  • Understanding doxorubicin resistance mechanisms is key to developing effective HCC therapies.
  • Targeting miRNA expression and stem cell pathways may offer novel chemosensitization strategies for HCC.
  • Further research into overcoming doxorubicin resistance is essential for improving patient outcomes in HCC.
Keywords:
FOXO3apoptosischemoembolizationlivermultidrug resistancesirtuinstopoisomerase

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