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Updated: May 10, 2026

MicroRNA Amplification and Recognition through Locked-nucleic-acid In situ Hybridization as a Novel Detection and Quantification Method
Published on: October 7, 2025
MicroRNAs as therapeutic targets in chemoresistance
Michela Garofalo1, Carlo M Croce
1Department of Molecular Virology, Immunology and Medical Genetics, Comprehensive Cancer Center, Ohio State University, Columbus, OH, USA.
Abstract:
Despite substantial progress in understanding the cancer signaling network, effective therapies remain scarce due to insufficient disruption of oncogenic pathways, drug resistance and drug-induced toxicity. New and more creative approaches are therefore required for the treatment of cancer. MicroRNAs (miRNAs) are a family of small noncoding RNAs that regulate gene expression by sequence-selective targeting of mRNAs, leading to a translational repression or mRNA degradation. Experimental evidence demonstrates that dysregulation of specific miRNAs leads to drug resistance in different cancers and correction of these miRNAs using miRNA mimics or antagomiRs can normalize the gene regulatory network and signaling pathways and sensitize cancerous cells to chemotherapy. Therefore, miRNA-based gene therapy provides an attractive anti-tumor approach for integrated cancer therapy. Here, we will discuss the involvement of microRNAs in chemotherapy resistance and focus on recent advancements in the development and delivery of miRNA-based cancer therapeutics.
Insights
MicroRNAs (miRNAs) can overcome chemotherapy resistance by correcting gene expression in cancer cells. miRNA-based therapies offer a promising approach to enhance anti-tumor treatment efficacy.
Area of Science:
- Molecular Biology
- Genetics
- Oncology
Background:
- Cancer therapies face challenges including drug resistance, pathway insensitivity, and toxicity.
- MicroRNAs (miRNAs), small noncoding RNAs, regulate gene expression and are implicated in cancer drug resistance.
- Dysregulated miRNAs can lead to reduced sensitivity to chemotherapy in various cancers.
Purpose of the Study:
- To discuss the role of microRNAs in chemotherapy resistance.
- To highlight recent advancements in miRNA-based therapeutics for cancer treatment.
- To explore miRNA mimics and antagomiRs as tools to restore chemosensitivity.
Main Methods:
- Review of experimental evidence on miRNA dysregulation in cancer drug resistance.
- Analysis of miRNA mimics and antagomiRs for correcting gene regulatory networks.
- Focus on development and delivery strategies for miRNA-based cancer therapeutics.
Main Results:
- Specific miRNAs are demonstrably involved in mediating chemotherapy resistance.
- Correction of miRNA levels can normalize oncogenic signaling pathways.
- Restored miRNA function sensitizes cancer cells to chemotherapy agents.
Conclusions:
- MicroRNA-based gene therapy presents a viable strategy for integrated cancer treatment.
- Targeting miRNAs can overcome drug resistance and improve therapeutic outcomes.
- Further development in miRNA therapeutic delivery is crucial for clinical application.
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