In Vitro Evaluation of Lipopolyplexes for Gene Transfection: Comparing 2D, 3D and Microdroplet-Enabled Cell Culture

被引:8
作者
Paris, Juan L. [1 ]
Coelho, Filipe [1 ]
Teixeira, Alexandra [1 ]
Dieguez, Lorena [1 ]
Silva, Bruno F. B. [1 ]
Abalde-Cela, Sara [1 ]
机构
[1] Int Iberian Nanotechnol Lab INL, Avda Mestre Jose Veiga, P-4715310 Braga, Portugal
来源
MOLECULES | 2020年 / 25卷 / 14期
关键词
Lipopolyplex; gene transfection; multicellular tumor spheroid; single-cell microdroplets; in vitro evaluation; MULTICELLULAR TUMOR SPHEROIDS; NUCLEIC-ACID DELIVERY; MESSENGER-RNA; CANCER; NANOPARTICLES; RAMAN; SYSTEMS; NANOCARRIERS; POLYCATIONS; VECTORS;
D O I
10.3390/molecules25143277
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Complexes combining nucleic acids with lipids and polymers (lipopolyplexes) show great promise for gene therapy since they enable compositional, physical and functional versatility to be optimized for therapeutic efficiency. When developing lipopolyplexes for gene delivery, one of the first evaluations performed is an in vitro transfection efficiency experiment. Many different in vitro models can be used, and the effect of the model on the experiment outcome has not been thoroughly studied. The objective of this work was to compare the insights obtained from three different in vitro models, as well as the potential limitations associated with each of them. We have prepared a series of lipopolyplex formulations with three different cationic polymers (poly-l-lysine, bioreducible poly-l-lysine and polyethyleneimine), and assessed their in vitro biological performance in 2D monolayer cell culture, 3D spheroid culture and microdroplet-based single-cell culture. Lipopolyplexes from different polymers presented varying degrees of transfection efficiency in all models. The best-performing formulation in 2D culture was the polyethyleneimine lipopolyplex, while lipoplexes prepared with bioreducible poly-l-lysine were the only ones achieving any transfection in microdroplet-enabled cell culture. None of the prepared formulations achieved significant gene transfection in 3D culture. All of the prepared formulations were well tolerated by cells in 2D culture, while at least one formulation (poly-l-lysine polyplex) delayed 3D spheroid growth. These results highlight the need for selecting the appropriate in vitro model depending on the intended application.
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页数:17
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