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Updated: Oct 23, 2025

Using RNA-sequencing to Detect Novel Splice Variants Related to Drug Resistance in In Vitro Cancer Models
Published on: December 9, 2016
Long non-coding RNAs as the critical regulators of doxorubicin resistance in tumor cells
Ghazaleh Khalili-Tanha1, Meysam Moghbeli2
1Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Abstract:
Resistance against conventional chemotherapeutic agents is one of the main reasons for tumor relapse and poor clinical outcomes in cancer patients. Various mechanisms are associated with drug resistance, including drug efflux, cell cycle, DNA repair and apoptosis. Doxorubicin (DOX) is a widely used first-line anti-cancer drug that functions as a DNA topoisomerase II inhibitor. However, DOX resistance has emerged as a large hurdle in efficient tumor therapy. Furthermore, despite its wide clinical application, DOX is a double-edged sword: it can damage normal tissues and affect the quality of patients' lives during and after treatment. It is essential to clarify the molecular basis of DOX resistance to support the development of novel therapeutic modalities with fewer and/or lower-impact side effects in cancer patients. Long non-coding RNAs (lncRNAs) have critical roles in the drug resistance of various tumors. In this review, we summarize the state of knowledge on all the lncRNAs associated with DOX resistance. The majority are involved in promoting DOX resistance. This review paves the way to introducing an lncRNA panel marker for the prediction of the DOX response and clinical outcomes for cancer patients.
Insights
Long non-coding RNAs (lncRNAs) are key players in doxorubicin (DOX) resistance, often promoting it. Understanding these lncRNAs can help predict patient response to DOX therapy and improve cancer treatment outcomes.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Drug resistance is a major cause of cancer treatment failure and relapse.
- Doxorubicin (DOX) is a vital chemotherapy drug, but resistance limits its efficacy and causes side effects.
- Understanding the mechanisms of DOX resistance is crucial for developing better cancer therapies.
Purpose of the Study:
- To review and summarize the current knowledge on long non-coding RNAs (lncRNAs) involved in doxorubicin resistance.
- To highlight the role of lncRNAs in promoting or potentially overcoming DOX resistance.
- To explore the potential of lncRNAs as biomarkers for predicting DOX response.
Main Methods:
- Literature review of studies investigating lncRNAs and doxorubicin resistance.
- Analysis of identified lncRNAs' mechanisms in modulating drug resistance.
- Synthesis of findings to establish the role of lncRNAs in cancer drug resistance.
Main Results:
- Numerous long non-coding RNAs (lncRNAs) have been identified as regulators of doxorubicin (DOX) resistance in various cancers.
- The majority of identified lncRNAs promote resistance by influencing pathways like drug efflux, DNA repair, and apoptosis.
- lncRNAs represent a significant molecular basis for DOX resistance.
Conclusions:
- Long non-coding RNAs (lncRNAs) are critically involved in mediating doxorubicin (DOX) resistance.
- lncRNAs hold promise as predictive biomarkers for patient response to DOX chemotherapy.
- Targeting lncRNAs may offer novel therapeutic strategies to overcome DOX resistance and improve cancer patient outcomes.
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