对人血清粉样蛋白P成分的抗体消除了内脏粉样蛋白沉积物
Karl Bodin1, Stephan Ellmerich, Melvyn C Kahan
1Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, Royal Free Campus, Rowland Hill Street, London NW3 2PF, UK.
Nature
|October 22, 2010
概括
使用抗血清粉样蛋白P成分 (SAP) 抗体的新疗法有效清除小鼠中已建立的粉样蛋白沉积物. 这种针对粉样蛋白内的SAP的方法为系统性和局部性粉样蛋白症提供了有前途的新疗法.
科学领域:
- 生物化学 生物化学
- 免疫学 免疫学 免疫学
- 病理学 病理学 病理学
背景情况:
- 系统性粉样性粉症是由粉样纤维的积累引起的,导致不同的临床表现和严重的器官损伤.
- 目前对粉样粉症的治疗重点是减少前体蛋白质,这并不总是可行的或有效的.
- 对于直接准和促进清除现有粉样蛋白沉积物的疗法有着至关重要的需求.
研究的目的:
- 研究一种新的治疗策略,以消除已建立的粉样蛋白沉积物.
- 评估向粉样蛋白沉积物中的血清粉样蛋白P成分 (SAP) 的疗效和安全性.
- 探索一种结合方法,涉及SAP枯竭和抗SAP抗体的管理.
主要方法:
- 向含有人类SAP的粉样蛋白沉积物的小鼠注射抗人类SAP抗体.
- 评估由此产生的免疫反应,特别是巨细胞衍生的巨细胞反应.
- 评估粉样蛋白沉积物的清除和潜在的不良影响.
- 用CPHPC对小鼠进行预处理,以耗尽循环中的SAP,使抗体能够进入沉积物.
主要成果:
- 抗SAP抗体治疗诱导了一种强烈的,依赖于补充的,巨细胞衍生的巨细胞反应.
- 这种反应导致了大量内脏粉样蛋白沉积物的快速有效的去除.
- 在小鼠模型中,在治疗期间没有观察到任何不良反应.
- 结合疗法显示出前所未有的消除粉样蛋白沉积物的能力.
结论:
- 在粉样蛋白沉积物中准血清粉样蛋白P成分 (SAP) 是一种可行的治疗策略.
- 联合使用SAP减肥剂和抗SAP抗体可以有效清除粉样蛋白.
- 这种新的方法对治疗所有形式的系统性和局部性氨基粉症具有前景.
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