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Updated: Jan 6, 2026

Using RNA-sequencing to Detect Novel Splice Variants Related to Drug Resistance in In Vitro Cancer Models
Published on: December 9, 2016
Non-coding RNAs' pivotal importance in modulation of cancer sensitivity to Topotecan: a systematic review
Seyed Mostafa Rahimi1, Abouzar Bagheri2,3
1Imam Khomeini Hospital, Mazandaran University of Medical Sciences, Sari, Iran.
Abstract:
Cancer is one of the leading causes of mortality worldwide. Development of new methods or improving the efficiency of already existing methods is essential in the successful treatment of this disease. Topotecan, a chemotherapeutic drug, has been used to inhibit various cancer types. However, chemotherapy resistance to this drug in cancer has impeded its maximum performance. miRNAs and other non-coding RNAs play crucial roles in regulating this attribute. In this systematic review, we investigated the interaction mechanism between these molecules and Topotecan in the modulation of cancer sensitivity to this agent. This study was carried out according to PRISMA guidelines. PubMed, Scopus, and Web of Science databases were comprehensively searched, using our predefined search terms. Following a selective process based on strategic criteria, eleven studies were included in the analysis. Altered expression levels of non-coding RNAs, especially miRNAs, regulated the sensitivity of cancer cell lines and animal models, directly and indirectly, through affecting cascades of signaling molecules. This impact was recorded in a variety of cancer types, including retinoblastoma, renal cell carcinoma, colorectal cancer, cervical cancer, breast cancer, prostate cancer, and leukemia. The highlighted interactions potentially offer new opportunities for modifying therapeutic intervention utilizing chemotherapeutic agents.
Insights
MicroRNAs (miRNAs) and non-coding RNAs influence cancer treatment outcomes. Understanding their interaction with Topotecan chemotherapy can improve cancer therapy effectiveness.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Cancer remains a leading global cause of death, necessitating improved treatment strategies.
- Topotecan is a chemotherapy agent used against various cancers, but its efficacy is limited by drug resistance.
- MicroRNAs (miRNAs) and other non-coding RNAs are key regulators of chemotherapy resistance.
Purpose of the Study:
- To systematically review the interaction mechanisms between non-coding RNAs and Topotecan.
- To investigate how these interactions modulate cancer sensitivity to Topotecan chemotherapy.
Main Methods:
- Systematic literature review adhering to PRISMA guidelines.
- Comprehensive searches of PubMed, Scopus, and Web of Science databases.
- Inclusion of eleven studies based on predefined selection criteria.
Main Results:
- Altered non-coding RNA expression, particularly miRNAs, significantly impacts cancer sensitivity to Topotecan.
- These regulatory effects occur through direct and indirect modulation of signaling pathways.
- Impacts were observed across diverse cancer types, including retinoblastoma, colorectal, breast, and prostate cancers.
Conclusions:
- Non-coding RNAs, especially miRNAs, are critical in determining cancer cell and model response to Topotecan.
- Targeting these RNA molecules presents potential novel strategies for enhancing Topotecan chemotherapy efficacy.
- Further research into these interactions could lead to improved therapeutic interventions for various cancers.
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