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Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo
Published on: January 7, 2019
Aptamers Enhance Oncolytic Viruses' Antitumor Efficacy
Maya A Dymova1, Anna S Kichkailo2,3, Elena V Kuligina1
1Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, 8 Lavrentiev Avenue, 630090 Novosibirsk, Russia.
Abstract:
Oncolytic viruses are highly promising for cancer treatment because they target and lyse tumor cells. These genetically engineered vectors introduce therapeutic or immunostimulatory genes into the tumor. However, viral therapy is not always safe and effective. Several problems are related to oncolytic viruses' targeted delivery to the tumor and immune system neutralization in the bloodstream. Cryoprotection and preventing viral particles from aggregating during storage are other critical issues. Aptamers, short RNA, or DNA oligonucleotides may help to crawl through this bottleneck. They are not immunogenic, are easily synthesized, can be chemically modified, and are not very demanding in storage conditions. It is possible to select an aptamer that specifically binds to any target cell, oncolytic virus, or molecule using the SELEX technology. This review comprehensively highlights the most important research and methodological approaches related to oncolytic viruses and nucleic acid aptamers. Here, we also analyze possible future research directions for combining these two methodologies to improve the effectiveness of cancer virotherapy.
Insights
Oncolytic viruses show promise for cancer treatment but face delivery and stability challenges. Aptamers offer a solution by enhancing targeted delivery and stability for improved cancer virotherapy.
Area of Science:
- Biotechnology
- Oncology
- Virology
Background:
- Oncolytic viruses are engineered to target and destroy cancer cells, offering a promising therapeutic avenue.
- Current challenges include targeted delivery, immune system evasion, and viral particle stability during storage.
- Nucleic acid aptamers present a potential solution to overcome these limitations in viral therapy.
Purpose of the Study:
- To review current research on oncolytic viruses and aptamers for cancer treatment.
- To analyze the potential of combining oncolytic viruses with aptamers to enhance cancer virotherapy.
- To identify future research directions for this combined approach.
Main Methods:
- Literature review of oncolytic virus and aptamer research.
- Analysis of aptamer selection technologies like SELEX (Systematic Evolution of Ligands by Exponential Enrichment).
- Evaluation of aptamer characteristics: non-immunogenicity, ease of synthesis, chemical modification, and storage stability.
Main Results:
- Aptamers can be selected to bind specific targets, including tumor cells and viruses.
- Aptamers are not immunogenic, are easily synthesized, and are stable under various conditions.
- Combining aptamers with oncolytic viruses can potentially improve targeted delivery and therapeutic efficacy.
Conclusions:
- Aptamers offer a versatile platform to address key challenges in oncolytic virus therapy.
- The integration of aptamers and oncolytic viruses holds significant potential for advancing cancer treatment.
- Further research is warranted to explore and optimize this synergistic approach for improved cancer virotherapy.
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