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A facile pH near-infrared fluorescence probe for the diagnosis of cancer in vivo

机译:用于诊断体内癌症的容易pH近红外荧光探针

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Early diagnosis of cancer is important to improve the chance of curing cancer. Intracellular pH plays a key role in many cellular events and is considered to be an important cancer marker. Unfortunately, near-infrared (NIR) fluorescence probe for detecting pH is rare. Herein, we designed and synthesized a pH NIR fluorescence probe termed CyO for cancer diagnosis. The acidic environment induces the protonation of CyO to form CyOH, resulting in fluorescence enhancement in NIR region. When pH varies from 7.4 to 5.0, the near-infrared fluorescence is increased by 20-fold. And there is a good linear relationship between fluorescence intensity and pH. In particular, the NIR fluorescence probe is applied for discriminating between normal and cancer environment by the detection of pH in various biological samples such as cell, tissue and living animal. This provides basic information that is helpful in early diagnosis of cancer.
机译:早期诊断癌症是改善治疗癌症的机会的重要性。 细胞内pH在许多细胞事件中起关键作用,被认为是重要的癌症标记。 不幸的是,用于检测pH的近红外(NIR)荧光探针是罕见的。 在此,我们设计并合成了pH nIR荧光探针称为Cyo用于癌症诊断。 酸性环境诱导Cyo形成CyOH的质子化,导致NIR区域中的荧光增强。 当pH值从7.4到5.0时,近红外荧光增加20倍。 荧光强度和pH之间存在良好的线性关系。 特别地,施用NIR荧光探针用于通过检测在各种生物样品如细胞,组织和活动物等生物样品中的pH值之间辨别正常和癌症环境。 这提供了有助于早期诊断癌症的基本信息。

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