Jańczyk A, Wolnicka-Głubisz A, Urbanska K, Kisch H, Stochel G, Macyk W. Photodynamic activity of platinum(IV) chloride surface-modified TiO2 irradiated with visible light.
Free Radic Biol Med 2008;
44:1120-30. [PMID:
18194674 DOI:
10.1016/j.freeradbiomed.2007.12.019]
[Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2007] [Revised: 11/23/2007] [Accepted: 12/07/2007] [Indexed: 10/22/2022]
Abstract
The visible light-induced phototoxicity of titanium dioxide modified with platinum(IV) chloride complexes, [TiO2/PtCl4], was tested. In vitro experiments with the mouse melanoma cells (S-91) have demonstrated phototoxicity of the [TiO2/PtCl4] material. Detection of efficiently generated various reactive oxygen species (.OH, O2. -, H2O2, 1O2) and also reactive chlorine species has proven the photodynamic activity of the tested material, induced by visible light (lambda>455 nm). The cellular death (recognized as a necrosis) is a result of the cell membrane peroxidation.
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