Enhanced Delivery of Plasmid Encoding Interleukin-12 Gene by Diethylene Triamine Penta-Acetic Acid (DTPA)-Conjugated PEI Nanoparticles

Applied Biochemistry and Biotechnology
Ali DehshahriFatemeh Sheikhsaran

Abstract

Recombinant therapeutic proteins have been considered as an efficient category of medications used for the treatment of various diseases. Despite their effectiveness, there are some reports on the systemic adverse effects of recombinant therapeutic proteins limiting their wide clinical applications. Among different cytokines used for cancer immunotherapy, interleukin-12 (IL-12) has shown great ability as a powerful antitumor and antiangiogenic agent. However, significant toxic reactions following the systemic administration of IL-12 have led researchers to seek for alternative approaches such as the delivery and local expression of the IL-12 gene inside the tumor tissues. In order to transfer the plasmid encoding IL-12 gene, the most extensively investigated polycationic polymer, polyethylenimine (PEI), was modified by diethylene triamine penta-acetic acid (DTPA) to modulate the hydrophobic-hydrophilic balance of the polymer as well as its toxicity. DTPA-conjugated PEI derivatives were able to form complexes in the size range around 100-180 nm with great condensation ability and protection of the plasmid against enzymatic degradation. The highest gene transfer ability was achieved by the DTPA-conjugated PEI at the conjugation d...Continue Reading

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Citations

Nov 13, 2020·Frontiers in Immunology·Khue G NguyenDavid A Zaharoff
Jan 19, 2021·ACS Biomaterials Science & Engineering·Congshan YuanXiguang Chen

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