凝溶胶蛋白与阿尔茨海默症
首发时间:2013-07-12
摘要:阿尔茨海默症(AD)的病理学特征之一是AD患者脑内存在以β-淀粉样肽(Aβ)为主要成分的老年斑。大量的实验证据表明,以Aβ为靶目标,清除老年斑有助于提高认知能力,是目前防治AD的一个重要研究方向。凝溶胶蛋白是一种重要的肌动蛋白结合蛋白。目前多个小组的研究成果显示,凝溶胶蛋白能够与Aβ相互作用,并且抑制Aβ积聚形成纤维,也能够引发Aβ纤维发生解聚。更重要的是,凝溶胶蛋白能够清除转基因AD模型小鼠脑内的老年斑和降低Aβ的水平。未来凝溶胶蛋白有可能被应用于AD的预防和治疗。
关键词: 生物化学与分子生物学 阿尔茨海默症 老年斑 凝溶胶蛋白 β-淀粉样肽
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Gelsolin and Alzheimer's disease
Abstract:The presence of amyloid plaques is one of the neuropathological features of Alzheimer's disease (AD). Amyloid plaques consist mainly of beta-amyloid peptide (Aβ). Accumulating experimental evidence shows that, targeted at Aβ, clearance of amyloid plaque is helpful for improving recognation ability, and will be an important strategy for the treatmet of AD. Gelsolin is an important actin-binding protein. Results from several research groups show that gelsolin inhibits the aggregation of Aβ into fibrils, and also disaggregates the preformed Aβ fibrils. More importantly, gelsolin reduces amyloid plaques and decreases the level of Aβ in transgenic mouse models of AD. In the future gelsolin will be possiblely used in the prevention and treatment of AD.
Keywords: Biochemistry and molecular biology Alzheimer's disease amyloid plaque gelsolin beta-amyloid peptide
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