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Cell:免疫基因或可帮助抑制帕金森疾病和痴呆症的发生

2015-10-14 佚名 生物谷

图片来源:webmd.com 据估计,全球大约有700万至1000万帕金森疾病患者,帕金森疾病是一种难以治愈、影响患者运动和认知功能的疾病,有超过一半的帕金森患者都会发展成为进行性的疾病,主要表现出和阿尔兹海默氏症相似的痴呆症状。近日一项刊登在国际杂志Cell上一项研究论文中,来自哥本哈根大学的研究人员通过研究发现,非遗传性的帕金森疾病或许是由于免疫调节性基因干扰素β(IFNβ)的功能性改变

图片来源:webmd.com

据估计,全球大约有700万至1000万帕金森疾病患者,帕金森疾病是一种难以治愈、影响患者运动和认知功能的疾病,有超过一半的帕金森患者都会发展成为进行性的疾病,主要表现出和阿尔兹海默氏症相似的痴呆症状。近日一项刊登在国际杂志Cell上一项研究论文中,来自哥本哈根大学的研究人员通过研究发现,非遗传性的帕金森疾病或许是由于免疫调节性基因干扰素β(IFNβ)的功能性改变而引发的,利用IFNβ基因疗法可以在实验室中成功抑制帕金森疾病模型中神经死亡和疾病的效应。

人类大脑中包含着大约1000亿个神经元,这些神经元在机体的所有部分进行着协调活动,文章中研究者发现免疫基因IFNβ在维持神经元的健康上扮演着重要角色。IFNβ对于神经元对废弃蛋白的再循环非常必要,如果没有IFNβ,废弃蛋白就会在名为路易小体 ( Lewy bodies )的疾病相关结构中积累,并且引发神经元细胞死亡。

缺失IFNβ的小鼠会在部分大脑中形成路易小体,从而控制机体的运动和记忆的恢复,最终导致患者引发疾病以及出现和帕金森患者及路易小体痴呆患者相似的症状。遗传性的基因突变在家族性的帕金森疾病中扮演者重要角色,本文研究中提供了一种非家族性的帕金森疾病模型来研究,研究者发现,IFNβ可以引发非家族性帕金森患者和路易小体痴呆患者出现病理学表现及临床特征,而这并不依赖于家族性帕金森疾病的基因突变。

当研究者引入IFNβ疗法后,就可以成功抑制患者神经元的死亡和疾病的发展,研究者希望本文研究可以帮助开发更加有效的治疗帕金森疾病的新型疗法。当前的疗法可以有效改善帕金森疾病出现的早期运动性障碍,然而随着疾病进展,疗法就会失去作用,下一步研究人员将会通过进行更多深入的研究来理解IFNβ的保护性作用机制。

原文出处:

Patrick Ejlerskov, Jeanette Göransdotter Hultberg,et al.Lack of Neuronal IFN-β-IFNAR Causes Lewy Body- and Parkinson’s Disease-like Dementia.cell.2015

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    2016-06-12 Boyinsh
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    2016-03-05 智智灵药
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