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IR-780 dye loaded tumor targeting theranostic nanoparticles for NIR imaging and photothermal therapy

机译:IR-780染料负载肿瘤,靶向治疗纳米颗粒,用于NIR成像和光热疗法

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摘要

Molecular imaging technology has been extensively applied in medical diagnosis, including MRI, CT, PET, ultrasonic imaging and near-infrared (NIR) fluorescence imaging. Specially, NIR fluorescence imaging provides many advantages as a sensitive, economical, non-invasive, non-radiant technique for real-time in vivo monitoring of biological information [1e4]. NIR dyes ranging from 650 to 900 nm provide better sensitivity for in vivo detection due to significantly less background from tissue auto-fluorescence [5]. IR-780 iodide is a lipophilic cation heptamethine dye with higher fluorescence intensity and more stable than indocyanine green (ICG) [6]. A rigid cyclohexenyl ring in the heptamethine chain with a central chlorine atom maintains photostability, increases quantum yield, decreases photobleaching, and reduces dye aggregation in solution [6]. Meanwhile, the IR-780 has been used as a photo-thermal therapy (PTT) agent [7].
机译:分子成像技术已广泛应用于医学诊断,包括MRI,CT,PET,超声成像和近红外(NIR)荧光成像。 特别是,NIR荧光成像提供了许多优点,作为对生物信息的实时监测实时的敏感,经济,无侵入性,非辐射技术[1E4]。 由于组织自动荧光[5]的背景显着较低,NIR染料范围为650至900nm为体内检测提供更好的敏感性[5]。 IR-780碘化物是一种亲脂阳离子庚醇染料,荧光强度较高,比吲哚菁绿(ICG)更稳定[6]。 具有中央氯原子的庚醇链中刚性环己烯环保持光激性,增加量子产率,降低光漂白,并减少溶液中的染料聚集[6]。 同时,IR-780已被用作光热疗法(PTT)剂[7]。

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