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Sci Transl Med:抑制这种蛋白能延缓老年痴呆症和渐冻人症发展,基因泰克已开启1期临床试验

2017-08-19 漱石 生物探索

Genentech公司领导的一项研究发现,抑制一种蛋白质——双亮氨酸拉链激酶(DLK)的生成能延缓阿尔茨海默病(AD)和肌萎缩侧索硬化症(ALS)模型小鼠中疾病进展。在这项发表于Science Translational Medicine期刊上的论文中,研究小组描述了DLK的工作方式,以及他们对已经开展的临床试验的期望。

Genentech公司领导的一项研究发现,抑制一种蛋白质——双亮氨酸拉链激酶(DLK)的生成能延缓阿尔茨海默病(AD)和肌萎缩侧索硬化症(ALS)模型小鼠中疾病进展。在这项发表于Science Translational Medicine期刊上的论文中,研究小组描述了DLK的工作方式,以及他们对已经开展的临床试验的期望。

AD和ALS虽然是两种差异很大的神经退行性疾病,但是它们有一个共同点——神经元死亡。科学家们一直在努力寻找预防和治疗这些疾病的方法,但是到目前为止,AD和ALS仍然没有治愈的方法。科学家们也在寻找能延缓这两种疾病发展的方法。这项新研究显示,在AD和ALS模型小鼠体内,抑制DLK的产生,延缓了这两种疾病的进展。

此前研究表明,DLK是ALS和AD中发生神经变性的调控因子之一,它还能激活另一种名为c-Jun N-terminal kinase(JNK)的蛋白质,JNK的激活与神经退行性疾病中神经元的死亡密切相关。这项新研究首次证实,在具有AD或ALS的人类和小鼠中,DLK和JNK的水平都出现上升。然后,研究人员通过基因工敲除了程小鼠中负责表达DLK的基因,结果发现那些ALS模型小鼠神经元死亡减少。接下来,研究小组开发了两种抑制DLK生产的药物,结果表明这两种药物都能够降低小鼠疾病模型的DLK水平。其中一种还能够延缓小鼠的疾病进程。

受到目前实验结果的鼓舞,Genetech公司已经开启了一项1期临床试验,以在人类患者中测试药物作用。

原始出处:Le Pichon CE, Meilandt WJ, Dominguez S, et al. Loss of dual leucine zipper kinase signaling is protective in animal models of neurodegenerative disease. Sci Transl Med. 2017 Aug 16;9(403).

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    2018-05-03 Boyinsh
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    2018-07-22 bsmagic9140
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    2017-08-21 nymo
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最近发表的一项研究中使用自动MRI体积测量方法(NeuroQuant)评估了主观认知功能障碍和轻度患者(SCI和MCI)与阿尔茨海默病(AD)患者脑部的区别,结果出人意料地发现AD患者的尾状核体积较大,本研究旨在进一步证实该发现。研究共纳入了257名SCI、MCI以及AD患者,评估其尾状核和海马的体积(均表现为颅内容积的比值)。收集所有研究对象的人口统计数据,认知评估措施,以及APOE-ɛ4的情况

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