科学家证实靶向表观遗传学,可逆转阿尔茨海默氏症小鼠的记忆力衰退

2019-01-26 MedSci MedSci原创

由布法罗大学科学家领导的一组研究人员发现,通过靶向非DNA序列引起的基因变化,即表观遗传学,可以逆转阿尔茨海默病(AD)动物模型中的记忆衰退。该研究发表在Brain杂志上,由美国国立卫生研究院拨款200万美元资助完成。

由布法罗大学科学家领导的一组研究人员发现,通过靶向非DNA序列引起的基因变化,即表观遗传学,可以逆转阿尔茨海默病(AD)动物模型中的记忆衰退。该研究发表在Brain杂志上,由美国国立卫生研究院拨款200万美元资助完成。

此项资助验证了阿尔茨海默氏症研究几十年来的失败,过往的研究主要是针对β淀粉样蛋白和tau蛋白的研究方法,然而这些研究迄今尚未产生任何有效的治疗药物。布法罗研究人员认为,他们在表观遗传学上的工作将为难以捉摸的阿尔茨海默病寻找到新的疗法。

AD由遗传和环境风险因素引起,例如衰老,这些因素结合导致表观遗传变化。表观遗传变化通常发生在疾病的后期阶段,比如患者无法保留最近获得的信息并遭受严重的认知衰退时。

认知能力下降的一个关键原因是谷氨酸受体的丧失,谷氨酸受体在学习和短期记忆中起关键作用。研究人员发现,谷氨酸受体的丧失是由表观遗传过程引起的,通过靶向表观遗传酶可以恢复谷氨酸受体来纠正认知功能障碍。

这些改进是短暂的,但只持续一周。布法罗大学团队表示,未来的研究将集中于开发更有效地渗透大脑并因此更持久的化合物。

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    2019-06-16 坚强007

    向科研人员致敬!向科研人员致敬!

    0

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    2019-02-11 1e145228m78(暂无匿称)

    学习了,谢谢作者分享!

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