Article Publish Status: FREE
Abstract Title:

Encapsulation of Alpha-Lipoic Acid in Functional Hybrid Liposomes: Promising Tool for the Reduction of Cisplatin-Induced Ototoxicity.

Abstract Source:

Pharmaceuticals (Basel). 2022 Mar 24 ;15(4). Epub 2022 Mar 24. PMID: 35455391

Abstract Author(s):

Manuela Curcio, Giuseppe Cirillo, Rosario Amato, Lorenzo Guidotti, Diana Amantea, Michele De Luca, Fiore Pasquale Nicoletta, Francesca Iemma, Mercedes Garcia-Gil

Article Affiliation:

Manuela Curcio


In this study, in order to address the drawback of cisplatin (CDDP)-induced ototoxicity, we propose a straightforward strategy based on the delivery of a sulfur-based antioxidant, such as lipoic acid (LA), to HEI-OC1 cells. To this aim, hybrid liposomes ([email protected]) with a spherical shape and a mean diameter of 25 nm were obtained by direct sonication of LA, phosphatidylcholine and a gelatin-curcumin conjugate in a physiological buffer. [email protected] were found to be stable over time, were quickly (i.e., by 1 h) taken up by HEI-OC1 cells, and guaranteed strong retention of the bioactive molecule, since LA release was less than 20%, even after 100 h. Cell viability studies showed the efficiency of [email protected] for stabilizing the protective activity of LA. Curcumin residues within the functional liposomes were indeed able to maintain the biological activity of LA, significantly improving (up to 2.19-fold) the viability of HEI-OC1 cells treated with 5μM CDDP. Finally, [email protected] was incorporated within an alginate-based injectable hydrogel carrier to create a formulation with physical chemical features suitable for potential ear applications.

Study Type : In Vitro Study

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