Nanoparticles of water-soluble dyads based on amino acid fullerene C60 derivatives and pyropheophorbide: Synthesis, photophysical properties, and photodynamic activity
作者:A.Yu. Belik、A.Yu. Rybkin、N.S. Goryachev、A.P. Sadkov、N.V. Filatova、A.G. Buyanovskaya、V.N. Talanova、Z.S. Klemenkova、V.S. Romanova、M.O. Koifman、A.A. Terentiev、A.I. Kotelnikov
DOI:10.1016/j.saa.2021.119885
日期:2021.11
Synthesis, spectral properties, and photodynamic activity of water-soluble amino acid fullerene C60 derivatives (AFD) and four original AFD-PPa dyads, obtained by covalent addition of dye pyropheophorbide (PPa) to AFD, were studied. In aqueous solution, these AFD-PPa dyads form nanoassociates as a result of self-assembly. In this case, a significant change in the absorption spectra and strong quenching
对水溶性氨基酸富勒烯C 60衍生物(AFD)和四种原始AFD-PP a二元化合物的合成,光谱性质和光动力活性进行了研究,这些染料是通过将染料焦脱镁叶绿酸(PP a)共价添加到AFD中而获得的。在水溶液中,这些AFD-PP a由于自组装,二分体形成纳米缔合体。在这种情况下,观察到了二分体结构中吸收光谱的显着变化和染料荧光的强烈淬灭。比较所研究化合物在水溶液中的超氧化物或单线态氧的产生效率,表明光动力学机理从II型(天然染料的单氧产生)转变为I型(二元组的超氧化物产生)。对于Val-C 60 -PP a,Ala-C 60 -PP a和Pro-C 60 -PP a,所有二联体对Hela细胞均具有明显的光毒性,IC 50分别为9.2 µM,9.2 µM,12.2 µM。, 分别。I型光动力机制的这种促进可能是针对缺氧肿瘤的观点。