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通过多式成像识别动脉样硬化,并引起动脉样保护作用

Victoria A Nankivell^1,2,3, Lauren Sandeman^1,3, Liam Stretton^1,3

¹Vascular Research Centre, Lifelong Health Theme, South Australian Health and Medical Research Institute, Adelaide, South Australia, 5000, Australia.

Materials today. Bio

|September 2, 2025

概括

脂纳米颗粒 (Por-NP) 对动脉样硬化具有双重的诊断和治疗效益. 这些新型纳米颗粒可以成像斑块并减少炎症, 显示出治疗这种疾病的巨大潜力.

科学领域:

纳米医学
心血管研究
分子成像

背景情况:

动脉样硬化是一个重大的健康挑战, 治疗选择有限.
脂纳米颗粒 (Por-NP) 集成了光和PET成像能力.
Por-NP 具有针对巨细胞和治疗干预的 (R4F).

研究的目的:

研究 Por-NP 在动脉样硬化的诊断和治疗潜力.
评估Por-NPs对动脉样硬化斑块的成像能力和减少炎症.
评估 Por-NP 作为用于动脉样硬化治疗的纳米级治疗剂.

主要方法:

使用巨细胞 (iBMDMs) 进行体外研究,以评估Por-NP吸收,胆固醇外流和炎症标志物表达.
使用Apoe-/小鼠进行体内研究,以评估Por-NP局部化,斑块成像和PET和光成像的治疗效果.
对炎症基因和蛋白质表达,炎症组分和NF-κB激活的分析.

主要成果:

在实验室中,Por-NP被巨细胞和减少的炎症媒介 (mRNA和蛋白质) 和炎症组分内化.
在体内PET成像显示了Por-NP在心脏中的定位,并检测了斑块的进展.
在小鼠模型中,Por-NP治疗减少了斑块大小,循环单细胞和大动脉炎症基因表达.

结论:

通过光和PET成像,Por-NP有效地检测动脉样斑块.
通过减少炎症和斑块负担,Por-NP显示出显著的动脉保护作用.
Por-NP代表了对动脉样硬化的有前途的纳米级疗法.

关键词:

抗炎药物动脉样硬化成像基于脂质的纳米粒子多模式成像氨酸脂质

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