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Human serum albumin (HSA) coated liposomal indocyanine green for in vivo tumor imaging

机译:人血清白蛋白(HSA)涂层脂质体吲哚菁绿,用于体内肿瘤成像

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In this study, a near-infrared (NIR) fluorescent nanoprobe based on indocyanine green (ICG) was synthesized. In comparison with ICG solution, the resulting nanoprobe, namely HSA–lipid–ICG NPs, exhibited remarkable improvement in stability as well as higher NIR fluorescence intensity. The in vitro experimental results demonstrated that HSA–lipid–ICG NPs were nontoxic at physiologically relevant concentrations and could be efficiently uptaken by MCF-7 cells through endocytosis after 0.5 h incubation. The biodistribution of HSA–lipid–ICG NPs was evaluated in a mouse xenograft model. An optimized tumor contrast was observed after 8 h intravenous administration, while ICG solution had negligible effect. The tumor could be clearly detected and the signal lasted at least up to 24 h after injection. This nanoprobe may potentially serve as an ideal contrast agent for in vivo NIR fluorescence imaging.
机译:在该研究中,合成了基于吲哚菁绿(ICG)的近红外(NIR)荧光纳米孔。与ICG溶液相比,所得的纳米孔,即HSA-Lipid-ICG NPS表现出显着改善的稳定性以及较高的NIR荧光强度。体外实验结果表明,HSA-Lipid-ICG NPS在生理相关浓度下存在无毒,并且可以通过MCF-7细胞通过内吞作用有效地升高于0.5小时后。在小鼠异种移植模型中评价HSA-LIPID-ICG NP的生物分布。在8小时内给药后观察到优化的肿瘤对比,而ICG溶液的效果可忽略不计。可以清楚地检测肿瘤,注射后,信号持续至少高达24小时。该纳米孔可能潜在用作体内荧光成像的理想造影剂。

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