Multifunctional Superparamagnetic Nanoparticles: From Synthesis to siRNA Delivery

Title:Multifunctional Superparamagnetic Nanoparticles: From Synthesis to siRNA Delivery

Volume: 23 Issue: 16

Author(s): Sanam Arami, Majid Mahdavi*, Mohammad Reza Rashidi, Marziyeh Fathi, Mohammad Saeid Hejazi and Nasser Samadi

Affiliation:

• Department of Biology, Faculty of Natural Science, University of Tabriz, Tabriz,Iran

Keywords: Aspartic acid, Gene delivery, MCF-7 cells, nanoparticle, siRNA therapy, polyethyleneimine (PEI).

Abstract: Background: Targeted delivery of small interfering RNA (siRNA) to the specific tumor tissues and cells is the key challenge in the development of RNA interference as a therapeutic application.

Methods: To target breast cancer, we developed a cationic nanoparticle as a therapeutic delivery system. The successful synthesis of the magnetic nanoparticles modified by polyaspartate (PAA) and polyethyleneimine (PEI) was confirmed using fourier transform infrared (FT-IR) measurements. The designed nanoparticle has been characterized evaluating its size and charge before and after nanoplex formation with siRNA.

Results: The designed nanoparticle could effectively form nanoplex with siRNA in 2:1 w/w ratio. Survivin siRNA was used to suppress the antiapoptotic gene, survivin, in MCF-7 cells. According to the importance of combinational therapy, Mitoxantrone (MTX) was used as a chemotherapeutic agent as well. The multifunctional nanoparticles have been successfully entered into about 63% of the MCF-7 cells shown via microscopic and flowcytometric methods. This effective cellular uptake led to the cell apoptosis. Down regulation of survivin was determined in mRNA and protein levels using Real Time PCR and western blotting, respectively.

Conclusion: Gathering all obtained data, it was concluded that Fe3O4-PAA-PEI nanoparticles can deliver siRNA effectively into the cytoplasm of the MCF-7 breast cancer cells and induce apoptosis.

Cite this article as:

Arami Sanam, Mahdavi Majid*, Rashidi Reza Mohammad, Fathi Marziyeh, Hejazi Saeid Mohammad and Samadi Nasser, Multifunctional Superparamagnetic Nanoparticles: From Synthesis to siRNA Delivery, Current Pharmaceutical Design 2017; 23 (16) . https://dx.doi.org/10.2174/1381612822666161031153159

DOI https://dx.doi.org/10.2174/1381612822666161031153159	Print ISSN 1381-6128
Publisher Name Bentham Science Publisher	Online ISSN 1873-4286