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阿尔茨海默氏症成像联盟
Xianwei Sun1, Andrew A Badachhape1, Terry-Elinor Reid2
1Baylor College of Medicine, Houston, TX, USA.
我们开发了针对CSF1-R的新型MRI敏感脂质体,以在阿尔茨海默氏症和帕金森病模型中描绘神经炎症. 这种技术精确地将诊断和潜在的治疗有效载荷传递给激活的微质细胞.
科学领域:
- 神经科学是一个神经科学.
- 生物技术是生物技术.
- 医疗成像医学成像
背景情况:
- 微质介导的神经炎症是神经退行性疾病的核心,如阿尔茨海默氏症 (AD) 和帕金森氏症 (PD).
- CSF1-R信号驱动微质激活,增殖和生存,在AD中观察到它的上调.
- 目前缺乏反应性微质症的体内成像,这阻碍了诊断和治疗监测.
研究的目的:
- 开发一种新型的分子成像技术,通过准CSF1-R.来治疗神经炎症.
- 为了创建MRI敏感的脂质体,以在体内分析反应性微质分裂.
- 评估神经退行性疾病的诊断潜力.
主要方法:
- 用Caflanone (CSF1-R配体) 和Gd(III) DSPE-DOTA (MRI对比剂) 配制的脂质体.
- 在人类和小鼠微质细胞系中验证的受体介导纳米粒子吸收.
- 在AD (APP/PSEN1,P301S) 和PD (A53TαS Tg) 鼠标模型中进行了体内MRI研究,并进行了体外免疫组织化学分析.
主要成果:
- 实验室试验证实了通过受体介导内细胞分裂通过Caflanone标记的纳米颗粒内部化.
- 在体内MRI显示,与野生类型对照相比,转基因小鼠的纳米颗粒在大脑中保留更强.
- 在AD模型中,ex vivo分析揭示了在围绕粉样β斑块的激活微质内纳米粒子局部化.
结论:
- 在多种神经退行性疾病模型中,证明了用MRI有效载荷精确地将caflanone-liposomes输送到激活的微质细胞.
- 这些纳米颗粒显示出开发神经炎症新型诊断的潜力.
- 该平台为开发神经炎症疾病的诊断和治疗提供了一个新的途径.
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