Stable, cytotoxic, and fluorescent Ti(IV) phenolato complexes – synthesis, characterization, and potential use in live cell imaging
作者:Zohar Shpilt、Edit Y. Tshuva
DOI:10.1016/j.inoche.2023.110660
日期:2023.6
titanium(IV) complexes were synthesized in high yields and purities, each with a tetradentate diaminobis(phenolato) “salan”-type ligand and the chelating and fluorescent alizarin ligand. The complexes exhibited an improved hydrolytic stability relatively to previously reported fluorescent Ti(IV) salen complexes (t1/2 for hydrolysis in 10% D2O up to ∼ 150 h), and high in vitro cytotoxicity toward two
以高产率和纯度合成了两种荧光钛 (IV) 配合物,每种配合物都具有四齿二氨基双(苯酚)“salan”型配体和螯合荧光茜素配体。相对于先前报道的荧光 Ti(IV) salen 复合物(在 10% D 2 O 中水解长达 ~ 150 小时, t 1/2 ),该复合物表现出更高的水解稳定性,并且对两种卵巢和子宫颈人类癌症具有高体外细胞毒性细胞系(IC 50: 1–15 µM)。它们在 530 nm 的激发产生红色荧光,发射峰位于 610 和 626 nm。这些复合物在共聚焦显微镜下在活 HeLa 细胞中追踪 48 小时,导致两者在细胞中大量积累,这证明了它们可能用于活细胞成像。