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Tumor-targeting multifunctional nanoparticles for siRNA delivery: recent advances in cancer therapy
Sook Hee Ku1, Kwangmeyung Kim, Kuiwon Choi
1Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, 136-791, Republic of Korea.
Abstract:
RNA interference (RNAi) is a naturally occurring regulatory process that controls posttranscriptional gene expression. Small interfering RNA (siRNA), a common form of RNAi-based therapeutics, offers new opportunities for cancer therapy via silencing specific genes, which are associated to cancer progress. However, clinical applications of RNAi-based therapy are still limited due to the easy degradation of siRNA during body circulation and the difficulty in the delivery of siRNA to desired tissues and cells. Thus, there have been many efforts to develop efficient siRNA delivery systems, which protect siRNA from serum nucleases and deliver siRNA to the intracellular region of target cells. Here, the recent advances in siRNA nanocarriers, which possess tumor-targeting ability are reviewed; various nanoparticle systems and their antitumor effects are summarized. The development of multifunctional nanocarriers for theranostics or combinatorial therapy is also discussed.
Insights
Small interfering RNA (siRNA) holds promise for cancer therapy by silencing genes. Nanocarriers are being developed to protect siRNA and improve its delivery for enhanced antitumor effects.
Area of Science:
- Biotechnology and Nanomedicine
- Molecular Biology and Genetics
- Cancer Therapeutics
Background:
- RNA interference (RNAi) is a natural gene regulatory process.
- Small interfering RNA (siRNA) therapeutics offer potential for cancer treatment by silencing disease-related genes.
- Clinical use of siRNA is hindered by degradation and inefficient delivery.
Purpose of the Study:
- To review recent advancements in siRNA nanocarriers for cancer therapy.
- To summarize nanoparticle systems and their antitumor effects.
- To discuss multifunctional nanocarriers for theranostics and combinatorial therapy.
Main Methods:
- Review of current literature on siRNA nanocarrier systems.
- Analysis of various nanoparticle designs for siRNA delivery.
- Summary of studies evaluating antitumor efficacy of siRNA nanocarriers.
Main Results:
- Development of novel nanocarriers enhances siRNA stability and cellular uptake.
- Targeted nanocarriers demonstrate significant antitumor effects in preclinical models.
- Emerging multifunctional nanocarriers show potential for combined diagnostics and therapeutics.
Conclusions:
- SiRNA nanocarriers represent a promising strategy to overcome delivery challenges in RNAi-based cancer therapy.
- Continued development of tumor-targeting and multifunctional nanocarriers is crucial for clinical translation.
- These advanced systems offer new avenues for personalized cancer treatment.
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