MiRNAs: main players of cancer drug resistance target ABC transporters

Area of Science:

• Oncology
• Molecular Biology
• Pharmacology

Background:

• Chemotherapy is a primary cancer treatment, but its effectiveness is limited by chemoresistance.
• Multidrug resistance (MDR) in cancer cells hinders successful remission and sustained treatment outcomes.
• Overexpression of ATP-binding cassette (ABC) transporters is a key mechanism contributing to chemoresistance.

Purpose of the Study:

• To review the molecular mechanisms underlying chemotherapy resistance.
• To focus on the role of ATP-binding cassette (ABC) transporters in drug resistance.
• To explore the regulatory function of microRNAs (miRNAs) in modulating ABC transporter activity and overcoming chemoresistance.

Main Methods:

• This study is a narrative review of existing scientific literature.
• It synthesizes information on molecular mechanisms of chemoresistance, including ABC transporters and miRNAs.
• The review focuses on the interplay between miRNAs and ABC transporters in the context of cancer drug resistance.

Main Results:

• Chemoresistance is multifactorial, involving ABC transporters, apoptosis dysfunction, DNA repair alterations, and cancer stem cell mechanisms.
• MicroRNAs (miRNAs) have been identified as key regulators that can target ABC transporters.
• Targeting ABC transporters with miRNAs presents a potential strategy to reverse multidrug resistance (MDR).

Conclusions:

• Understanding the molecular basis of chemoresistance, particularly the role of ABC transporters, is crucial.
• MicroRNAs (miRNAs) offer a promising therapeutic avenue for overcoming drug resistance by modulating ABC transporter function.
• Further research into miRNA-based strategies could lead to novel approaches for enhancing chemotherapy efficacy.