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3. A mechanistic explanation of the inhibitory role of the protein corona on liposomal gene expression

Author

Francesca Giulimondi, Giulio Caracciolo, Morteza Mahmoudi, Daniela Pozzi, Sara Palchetti, Luca Digiacomo, Heinz Amenitsch, Gianmarco Ferri, Giovanna Peruzzi, Francesco Cardarelli, Palchetti, S., Digiacomo, L., Giulimondi, F., Pozzi, D., Peruzzi, G., Ferri, G., Amenitsch, H., Cardarelli, F., Mahmoudi, M., and Caracciolo, G.

Subjects
Biochemical Phenomena, Protein corona, Biophysics, Protein Corona, CHO Cells, 02 engineering and technology, Gene delivery, Transfection, Endocytosis, Biochemistry, 03 medical and health sciences, Cricetulus, Cytosol, X-Ray Diffraction, Cations, Scattering, Small Angle, Animals, Humans, Cationic liposome, 030304 developmental biology, 0303 health sciences, Liposome, Chemistry, Pinocytosis, Transfection efficiency, DNA, Cell Biology, Cell sorting, 021001 nanoscience & nanotechnology, Lipids, Lipoplexe, Gene Expression Regulation, Transfection mechanisms, Liposomes, lipids (amino acids, peptides, and proteins), 0210 nano-technology, Synchrotrons, HeLa Cells
Abstract

The past three decades have witnessed fast advances in the use of cationic liposome-DNA complexes (lipoplexes) for gene delivery applications. However, no lipoplex formulation has reached into the clinical practice so far. The primary drawback limiting clinical use of lipoplexes is the lack of mechanistic understanding of their low transfection efficiency (TE) in vivo. In physiological environments, lipoplexes are coated by a protein corona (PC) that mediates the interactions with the cell machinery. Here we show that the formation of PC can change the interactions of multicomponent (MC) lipoplexes with our cell model (i.e., HeLa). At the highest lipoplex concentration, the formation of PC can reduce the TE of MC lipoplexes from 60% to

Published
2020

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