The concept that the effective unit of interest in the cell-nanomaterial interaction is the particle and its corona of associated proteins is emerging. Here we investigate the compositional evolution of the protein corona of 1,2-dioleoyl-3-trimethylammonium propane (DOTAP) cationic liposomes (CLs) and DOTAP/DNA lipoplexes over a wide range of plasma concentrations (2.5-80%). The composition of the hard corona of lipoplexes is quite stable, but that of CLs does evolve considerably. We show that the protein corona of CLs is made of both low-affinity and competitive-binding proteins whose relative abundance changes with the plasma concentration. This result may have deep biological implications for the application of lipid-based gene vectors both in vitro and in vivo.

Evolution of the Protein Corona of Lipid Gene Vectors as a Function of Plasma Concentration / Caracciolo, Giulio; Pozzi, Daniela; Capriotti, ANNA LAURA; Cavaliere, Chiara; Foglia, Patrizia; Heinz, Amenitsch; Lagana', Aldo. - In: LANGMUIR. - ISSN 0743-7463. - STAMPA. - 27:24(2011), pp. 15048-15053. [10.1021/la202912f]

Evolution of the Protein Corona of Lipid Gene Vectors as a Function of Plasma Concentration

CARACCIOLO, Giulio;POZZI, DANIELA;CAPRIOTTI, ANNA LAURA;CAVALIERE, CHIARA;FOGLIA, Patrizia;LAGANA', Aldo
2011

Abstract

The concept that the effective unit of interest in the cell-nanomaterial interaction is the particle and its corona of associated proteins is emerging. Here we investigate the compositional evolution of the protein corona of 1,2-dioleoyl-3-trimethylammonium propane (DOTAP) cationic liposomes (CLs) and DOTAP/DNA lipoplexes over a wide range of plasma concentrations (2.5-80%). The composition of the hard corona of lipoplexes is quite stable, but that of CLs does evolve considerably. We show that the protein corona of CLs is made of both low-affinity and competitive-binding proteins whose relative abundance changes with the plasma concentration. This result may have deep biological implications for the application of lipid-based gene vectors both in vitro and in vivo.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11573/425917
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