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Cancer "stemness"- regulating microRNAs: role, mechanisms and therapeutic potential

Arun Bhardwaj1, Sumit Arora, Vijay K Prajapati

  • 1Mitchell Cancer Institute, University of South Alabama, Mobile, AL 36604, USA.

Current Drug Targets
|July 10, 2013
PubMed

Insights

Cancer stem cells (CSCs) drive therapeutic resistance. MicroRNAs (miRNAs) regulate CSCs, offering new targets for overcoming treatment failure in advanced metastatic cancers.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Advanced metastatic cancers often resist conventional and targeted therapies, leading to treatment failure and tumor relapse.
  • The cancer stem cell (CSC) hypothesis posits that a subpopulation of cells drives tumor initiation and progression, contributing to therapeutic refractoriness.
  • MicroRNAs (miRNAs), small non-coding RNAs, are key gene expression regulators implicated in cancer development and progression.

Purpose of the Study:

  • To review the role of miRNAs in regulating cancer stemness properties.
  • To explore the therapeutic potential of targeting miRNAs for overcoming treatment resistance in metastatic cancers.
  • To discuss recent advances in miRNA-based strategies for cancer therapy.

Main Methods:

  • Literature review of recent studies on miRNAs, CSCs, and therapeutic resistance.
  • Analysis of findings on differentially expressed miRNAs in CSCs.
  • Discussion of miRNA-based therapeutic strategies.

Main Results:

  • Several miRNAs are differentially expressed in CSCs, influencing pathways that maintain cancer stemness.
  • miRNAs can act as tumor promoters (oncomirs) or suppressors (anti-oncomirs), impacting therapeutic outcomes.
  • Targeting specific miRNAs shows promise for sensitizing tumors to existing therapies.

Conclusions:

  • miRNAs are critical regulators of CSCs and play a significant role in cancer therapeutic resistance.
  • miRNA-based therapies represent a promising strategy to target CSCs and improve treatment efficacy in advanced metastatic cancers.
  • Further research into miRNA mechanisms and targeted delivery is crucial for clinical translation.

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