A novel formulation of -gingerol: Proliposomes with enhanced oral bioavailability and antitumor effect
-Gingerol, one of the components of the rhizome of Ginger, has a variety of biological activities such as anticoagulant, antioxidative, antitumor, anti-inflammatory, antihypertensive, and so forth. However, as one of the homologous phenolic ketones, -gingerol is insoluble in water which limits its applications. Herein, we prepared -gingerol proliposomes through modified thin-film dispersion method, which was spherical or oval, and physicochemically stable with narrow size distribution. Surprisingly, in vitro release of -gingerol loaded proliposome compared with the free -gingerol was significantly higher and its oral bioavailability increased 5-fold in vivo. Intriguingly, its antitumor effect was enhanced in the liposome formulation. Thus, our prepared -gingerol proliposome proved to be a novel formulation for -gingerol, which significantly improved its antitumor effect.