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Boost of serum resistance and storage stability in cationic polyprenyl-based lipofection by helper lipids compositions.

European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V (2020-08-05)
Monika Rak, Anna Ochałek, Katarzyna Gawarecka, Marek Masnyk, Marek Chmielewski, Tadeusz Chojnacki, Ewa Swiezewska, Zbigniew Madeja
ABSTRACT

Lipofection is a widely used molecular biology technique and one of the most promising non-viral gene therapy strategies. However, one of the main drawbacks of using cationic lipids-based lipoplexes in DNA/RNA delivery is serum-associated inhibition of transfection. We have addressed this issue using PTAI (trimethylpolyprenylammonium iodides)-based lipofection model. To overcome serum-sensitivity we used 100 different formulations based on different PTAI, various helper lipids compositions, lipoplex surface modifications with polyethylene glycol (PEG), and precondensation of DNA with poly-L-lysine (PLL). Multicomponent helper lipids compositions boosted serum resistance and largely improved long-term storage of PTAI-based reagents. This was observed, in particular, for PTAI with longer isoprenoid chains. Additionally, our PTAI-based carriers were efficient for DNA and RNA delivery and safe for human red blood cells (RBC). Moreover, a broad array of the modifications used resulted in an important observation - a diverse susceptibility of various cell types to different compositions was noted. Overall, our results show that helper lipids composition mediates efficient serum-resistant DNA/RNA lipofection. Additionally, multicomponent PTAI-based reagents are promising gene delivery carriers both, at the cellular and organismal level.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
1,2-Dilinoleoyl-3-palmitoyl-rac-glycerol, ≥95% (TLC), liquid
Sigma-Aldrich
L-α-Phosphatidylethanolamine, dioleoyl, ≥99% (GC), ≥98% (TLC), lyophilized powder