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Photoinduced nitric oxide release from a nitrobenzene derivative in mitochondria

机译:线粒体中硝基苯衍生物的光诱导一氧化氮释放

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We report a novel NO donor (RpNO), containing a 2,6-dimethylnitrobenzene moiety for photocontrollable NO release and a rhodamine moiety for targeting to mitochondria. Photorelease of NO from RpNO in aqueous solution was confirmed by means of ESR analysis. Cellular release of NO from RpNO was confirmed with the aid of DAF-FMDA, an NO-specific fluorescence probe. RpNO was colocalized with MitoTracker GreenFM, a mitochondrial stain, in HCT116 colon cancer cells and exhibited photodependent cytotoxicity. Our results indicate that RpNO is an effective NO donor for time-controlled, mitochondria-specific NO treatment. NO entry! A novel NO donor (RpNO) containing a 2,6-dimethylnitrobenzene moiety for photocontrollable NO release and a rhodamine moiety for targeting to mitochondria was synthesized (see graphic). It was confirmed that RpNO became localized in the mitochondria of HCT116 colon cancer cells, and showed photodependent cytotoxicity. This is the first example of a photocontrollable, mitochondria-localizing NO donor.
机译:我们报告了一种新型的NO供体(RpNO),其中包含一个2,6-二甲基硝基苯部分,用于光控NO的释放,以及一个若丹明部分,用于靶向线粒体。通过ESR分析证实RpNO在水溶液中从NO中释放出NO。借助DAF-FMDA(一种NO特异性荧光探针)确认了RpNO中NO的细胞释放。 RpNO与线粒体染色的MitoTracker GreenFM在HCT116结肠癌细胞中共定位,并表现出光依赖性细胞毒性。我们的结果表明,RpNO是时间控制的线粒体特异性NO治疗的有效NO供体。禁止入内!合成了一种新型的NO供体(RpNO),其中包含用于光控性NO释放的2,6-二甲基硝基苯部分和用于靶向线粒体的罗丹明部分(见图)。证实RpNO定位于HCT116结肠癌细胞的线粒体中,并显示出光依赖性细胞毒性。这是光可控制的线粒体定位NO供体的第一个例子。

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