Here, we report a photodynamic therapy (PDT) photosensitizer of N∧C∧N-coordinated Pt(II) complexes: [Pt(L)(solv)]+ (HL = 1,3-(2-dipyridyl)benzene) and [Pt(L)]+@HSA, which is the Pt(II) complex encapsulated in human serum albumin (HSA). The quantum yield of singlet oxygen production for [Pt(L)(solv)]+ is more than 50%, while that for [Pt(L)]+@HSA is much lower. Photoimages of human umbilical vein endothelial cells (HUVECs) treated with the Pt(II) complexes suggest that [Pt(L)(solv)]+ is delocalized in the entire cell after the fast uptake by diffusion and [Pt(L)]+@HSA is taken up by endocytosis and localized on organelles and the cell membrane. [Pt(L)(solv)]+ shows high photocytotoxicity for HUVECs, while [Pt(L)]+@HSA does not show photocytotoxicity.
CITATION STYLE
Hattori, S., Ogishima, M., Nakajima, T., Hosoya, S., Kitagawa, Y., Hasegawa, Y., … Shinozaki, K. (2024). Photodynamic Effect of Amphiphilic N∧C∧N-Coordinated Platinum(II) Complexes in Human Umbilical Vein Endothelial Cells. Inorganic Chemistry. https://doi.org/10.1021/acs.inorgchem.4c01414
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