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Updated: Mar 6, 2026

MicroRNA Amplification and Recognition through Locked-nucleic-acid In situ Hybridization as a Novel Detection and Quantification Method
Published on: October 7, 2025
Influence of microRNAs and Long Non-Coding RNAs in Cancer Chemoresistance
Duncan Ayers1,2, Jo Vandesompele3,4
1Centre for Molecular Medicine and Biobanking, University of Malta, Msida MSD2080, Malta. Duncan.Ayers@um.edu.mt.
Abstract:
Innate and acquired chemoresistance exhibited by most tumours exposed to conventional chemotherapeutic agents account for the majority of relapse cases in cancer patients. Such chemoresistance phenotypes are of a multi-factorial nature from multiple key molecular players. The discovery of the RNA interference pathway in 1998 and the widespread gene regulatory influences exerted by microRNAs (miRNAs) and other non-coding RNAs have certainly expanded the level of intricacy present for the development of any single physiological phenotype, including cancer chemoresistance. This review article focuses on the latest research efforts in identifying and validating specific key molecular players from the two main families of non-coding RNAs, namely miRNAs and long non-coding RNAs (lncRNAs), having direct or indirect influences in the development of cancer drug resistance properties and how such knowledge can be utilised for novel theranostics in oncology.
Insights
Most cancer relapses stem from drug resistance. This review explores how microRNAs (miRNAs) and long non-coding RNAs (lncRNAs) contribute to chemoresistance, offering insights for new cancer therapies.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Chemoresistance in tumors is a major cause of cancer relapse.
- This resistance is complex, involving multiple molecular factors.
- Non-coding RNAs, including microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), play significant roles in gene regulation and cellular phenotypes, including cancer development.
Purpose of the Study:
- To review recent research on non-coding RNAs in cancer drug resistance.
- To identify key microRNAs (miRNAs) and long non-coding RNAs (lncRNAs) involved in chemoresistance.
- To explore the potential of these non-coding RNAs for novel cancer theranostics.
Main Methods:
- Literature review of recent studies on non-coding RNAs and cancer chemoresistance.
- Identification and validation of specific microRNAs (miRNAs) and long non-coding RNAs (lncRNAs) implicated in drug resistance.
- Analysis of how these non-coding RNAs influence cancer drug resistance properties.
Main Results:
- Non-coding RNAs, particularly miRNAs and lncRNAs, are key regulators of cancer chemoresistance.
- Specific miRNAs and lncRNAs have been identified as crucial molecular players in developing drug resistance phenotypes.
- Understanding these non-coding RNA roles provides a basis for developing targeted cancer therapies.
Conclusions:
- Non-coding RNAs significantly influence cancer drug resistance.
- Targeting specific miRNAs and lncRNAs holds promise for overcoming chemoresistance.
- This knowledge can advance the development of novel theranostic strategies in oncology.
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