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Porous Silicon Microparticles for Delivery of siRNA Therapeutics
Published on: January 15, 2015
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Dual-functionalized architecture enables stable and tumor cell-specific SiO2NPs in complex biological fluids
Iris Renata Sousa Ribeiro1,2, Raquel Frenedoso da Silva2, Romênia Ramos Domingues3
1Institute of Chemistry (IQ), University of Campinas (UNICAMP), Postal Code 13083- 970, Post Office Box 6154, Campinas, SP, Brazil.
Beilstein Journal of Nanotechnology
|October 15, 2024
Summary
New silica nanoparticles (SiO2NPs) show enhanced stability and tumor cell targeting in biological fluids. These advancements improve the efficacy and reduce the toxicity of nanomedicines for cancer treatment.
Area of Science:
- Nanomedicine
- Biomaterials Science
- Cancer Therapeutics
Background:
- Intravenous administration of nanomedicines faces challenges due to interactions with blood components.
- These interactions can lead to nanoparticle destabilization and reduced targeting efficacy.
- Limited studies evaluate nanoparticle behavior in complex biological environments.
Purpose of the Study:
- To develop and evaluate dually functionalized silica nanoparticles (SiO2NPs) for improved anticancer drug delivery.
- To assess the stability, protein corona formation, hemolytic activity, and targeting capabilities of these nanoparticles in biological media.
Main Methods:
- Synthesized fluorescent silica nanoparticles (SiO2NPs).
- Functionalized SiO2NPs with zwitterionic (stabilizer) and folate (targeting) groups.
- Evaluated nanoparticle stability in human plasma.
- Assessed protein adsorption and hemolytic activity in murine blood.
- Investigated cellular uptake by tumor versus healthy cell lines.
Main Results:
- Dually functionalized SiO2NPs maintained stability in unprocessed human plasma.
- Reduced protein adsorption was observed on functionalized nanoparticles.
- Nanoparticles exhibited no hemolytic activity in murine blood.
- Functionalized SiO2NPs demonstrated increased internalization by tumor cells compared to healthy cells.
Conclusions:
- Zwitterionic and folate functionalization enhances the stability and tumor-targeting of silica nanoparticles in biological environments.
- These findings support the development of more effective and safer nanomedicines for cancer therapy.
- Further research in complex biological settings is crucial for reliable nanomedicine development.
