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nature:多巴胺D2受体结构揭晓,有助于研发更安全的精神病药物

2018-01-26 Nature自然科研 Nature自然科研

本周《自然》在线发表的一篇论文Structure of the D2 dopamine receptor bound to the atypical antipsychotic drug risperidone报告了与常用抗精神病药物利培酮结合的多巴胺D2受体(DRD2)的结构——该受体是用于治疗精神病的药物的主要靶点。因为靶向该受体的药物与其他相关受体会产生相互作用,所以常常引起严重、有害的副作

本周《自然》在线发表的一篇论文Structure of the D2 dopamine receptor bound to the atypical antipsychotic drug risperidone报告了与常用抗精神病药物利培酮结合的多巴胺D2受体(DRD2)的结构——该受体是用于治疗精神病的药物的主要靶点。因为靶向该受体的药物与其他相关受体会产生相互作用,所以常常引起严重、有害的副作用。正因为如此,对DRD2结构及功能有更好的了解能帮助科学家寻找更安全的、对DRD2有选择性的抗精神病药物。

DRD2的结构和DRD3、DRD4的比较。

神经递质多巴胺与多种疾病,如精神分裂症、帕金森病和抑郁症有关。其行为由一个由5个G蛋白偶联受体组成的蛋白家族介导。其中一个受体便是DRD2,它是多种抗精神病药物的主要靶点,但是对其结构和功能在分子层面上的理解一直模糊不清。

DRD2(a)和DRD3(b)、DRD4(c)配体结合位点的比较。

美国北卡罗来纳大学教堂山分校的Bryan Roth及同事报告DRD2与利培酮结合状态下的晶体结构。他们发现药物与受体以特殊方式结合,即一小块由色氨酸组成的疏水片像一顶帽子一样控制药物的进出——这不同于在D3和D4受体中观察到的现象。在此位置的变异缩短药物与受体保持结合的时间,而这种结合通常被认为与典型抗精神病药物引起的副作用锥体外系反应(运动障碍)有关。

原始出处:
Sheng Wang, Tao Che, Anat Levit, et al.Structure of the D2 dopamine receptor bound to the atypical antipsychotic drug risperidone.Nature
doi:10.1038/nature25758.24 January 2018

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    2018-01-28 lqvr
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    2018-01-26 1ddf0692m34(暂无匿称)

    学习了.涨知识

    0

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    2018-01-26 龙胆草

    学习谢谢分享

    0

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