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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Glyconanoparticles Allow Pre-symptomatic In Vivo Imaging Of Brain Disease
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Glyconanoparticles Allow Pre-symptomatic In Vivo Imaging Of Brain Disease

机译:糖皮质激素可对脑疾病进行症状前体内成像

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摘要

Initial recruitment of leukocytes in inflammation associated with diseases such as multiple sclerosis (MS), ischemic stroke, and HIV-related dementia, takes place across intact, but activated brain en-dothelium. It is therefore undetectable to symptom-based diagnoses and cannot be observed by conventional imaging techniques, which rely on increased permeability of the blood-brain barrier (BBB) in later stages of disease. Specific visualization of the early-activated cerebral endothelium would provide a powerful tool forthe presymp-tomatic diagnosis of brain disease and evaluation of new therapies. Here, we present the design, construction and in vivo application of carbohydrate-functionalized nanoparticles that allow direct detection of endothelial markers E-/P-selectin (CD62E/CD62P) in acute inflammation. These first examples of MRI-visible glyconanopartides display multiple copies of the natural complex glycan ligand of selectins. Their resulting sensitivity and binding selectivity has allowed acute detection of disease in mammals with beneficial implications for treatment of an expanding patient population suffering from neurological disease.
机译:在与多发性硬化症(MS),缺血性中风和HIV相关的痴呆等疾病相关的炎症中,白细胞的初始募集是在完整但激活的脑上皮中进行的。因此,对于基于症状的诊断是无法检测到的,并且不能通过常规的成像技术来观察,常规成像技术依赖于疾病后期阶段血脑屏障(BBB)渗透性的提高。早期激活的脑内皮细胞的特殊可视化将为脑部疾病的症状前诊断和新疗法的评估提供强大的工具。在这里,我们介绍了碳水化合物功能化的纳米颗粒的设计,构建和体内应用,这些纳米颗粒可以直接检测急性炎症中的内皮标记物E- / P-选择蛋白(CD62E / CD62P)。 MRI可见的糖纳米颗粒的这些第一个示例显示了选择素的天然复合聚糖配体的多个副本。它们产生的敏感性和结合选择性已使哺乳动物中的疾病得以急性检测,对治疗神经疾病不断扩大的患者群体具有有益的意义。

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