A Red Fluorescence Two-photon Absorption Probe for Sensitive Imaging of Live Mitochondria
作者:Makoto Tominaga、Shuhei Mochida、Hiroyuki Sugihara、Koichiro Satomi、Hiroki Moritomo、Akinari Fuji、Arina Tomoyuki、Yasutaka Suzuki、Jun Kawamata
DOI:10.1246/cl.140447
日期:2014.9.5
We synthesized two-photon absorption probes based on naphthalene and anthracene: 1,1′-dimethyl-4,4′-(2,6-naphthylenedi-2,1-ethenediyl)dipyridinium diiodide (NP) and 1,1′-dimethyl-4,4′-(2,6-anthrylenedi-2,1-ethenediyl)dipyridinium diiodide (AC). These two probes were successfully accumulated in mitochondria with different fluorescence colors: yellow (NP) and red (AC). Two-photon absorption cross sections (σ(2)) were 712 and 685 GM (1 GM = 10−50 cm4 s photon−1 molecule−1), respectively. These values are nine times larger than the σ(2) of the commercially available mitochondria-selective probe with efficient two-photon absorption property (rhodamine 123).
我们合成了基于萘和蒽的双光子吸收探针:1,1′-二甲基-4,4′-(2,6-萘二基-2,1-乙烯二基)二吡啶鎓二碘化物(NP)和1,1′-二甲基-4,4′-(2,6-蒽二基-2,1-乙烯二基)二吡啶鎓二碘化物(AC)。这两种探针成功地在线粒体中积累了不同的荧光颜色:黄色(NP)和红色(AC)。双光子吸收截面(σ(2))分别为 712 GM 和 685 GM(1 GM = 10-50 cm4 s 光子-1 分子-1)。这些数值比市面上具有高效双光子吸收特性的线粒体选择性探针(罗丹明 123)的σ(2) 大九倍。