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Published on: June 15, 2018
Progresses in microRNA Delivery Using Synthetic Nanovectors in Cancer Therapy
Sanaz Javanmardi1, Mahmoud Reza Aghamaali1, Samira Sadat Abolmaali2
1Department of Biology, Faculty of Science, University of Guilan, Rasht, Iran.
Abstract:
MicroRNAs are small noncoding RNAs with key roles in gene expression. It has been revealed that aberrant expression of microRNAs is related to gene expression abnormality, and they have the potential to be used as anti-cancer drugs. However, the delivery of microRNAs is limited due to barriers, such as low uptake and insufficient endosomal release, intracellular nucleases degradation, phagocytic elimination, and renal filtration. To overcome these issues, novel delivery systems are developed for improving the efficiency of microRNAs therapy ranging from viral to synthetic; some are further developed with targeted ligands for active targeting purposes. Such delivery systems provide efficient cellular uptake and endosomal release as well as low cytotoxicity and minimum unwanted host immune response. Nevertheless, more complementary studies are warranted before being applied in human studies. This review deals with recent updates on the challenges and achievements of the various nanotechnology-based gene delivery vehicles with a special emphasis on the miRNA delivery in cancer therapy. In addition, we attempted to categorize the designed delivery systems based on miRNA therapeutic molecule. The related cellular signaling pathways and pharmacological action against cancer promotion have also been highlighted.
Insights
MicroRNAs hold promise for cancer therapy but face delivery challenges. Nanotechnology-based delivery systems are improving microRNA (miRNA) efficacy by overcoming biological barriers for advanced anti-cancer drug development.
Area of Science:
- Molecular Biology
- Nanotechnology
- Oncology
Background:
- MicroRNAs (miRNAs) are crucial noncoding RNAs regulating gene expression.
- Aberrant miRNA expression is linked to cancer, presenting therapeutic potential.
- Current miRNA delivery faces barriers like low uptake, degradation, and immune response.
Purpose of the Study:
- To review recent advancements in nanotechnology-based delivery systems for miRNA cancer therapy.
- To categorize delivery systems based on miRNA molecules and their therapeutic applications.
- To highlight challenges and achievements in overcoming delivery barriers.
Main Methods:
- Review of current literature on nanotechnology-based miRNA delivery systems.
- Categorization of delivery vehicles (viral, synthetic, targeted) for miRNA therapeutics.
- Analysis of miRNA delivery efficiency, cellular uptake, endosomal escape, and cytotoxicity.
Main Results:
- Nanotechnology offers solutions to miRNA delivery barriers, enhancing therapeutic efficiency.
- Targeted delivery systems improve cellular uptake and reduce off-target effects.
- Various systems demonstrate potential for improved anti-cancer efficacy with low toxicity.
Conclusions:
- Nanotechnology-based delivery systems are critical for advancing miRNA cancer therapy.
- Overcoming biological barriers is key to successful miRNA drug development.
- Further research is needed for clinical translation of these advanced delivery systems.
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