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Nat Commun:parkin相关帕金森病的分子机制

2018-01-12 白杨 北大分子医学研究所

日前,北京大学分子医学研究所、北大-清华生命科学联合中心、生物膜国家重点实验室、麦戈文(北大)脑科学研究所周专实验室发表论文“Synaptotagmin-11 is a critical mediator of parkin-linked neurotoxicity and Parkinson’s disease-like pathology”,揭示了20年未解的parkin失活导致帕金森病(PD

日前,北京大学分子医学研究所、北大-清华生命科学联合中心、生物膜国家重点实验室、麦戈文(北大)脑科学研究所周专实验室发表论文“Synaptotagmin-11 is a critical mediator of parkin-linked neurotoxicity and Parkinson’s disease-like pathology”,揭示了20年未解的parkin失活导致帕金森病(PD)的分子病理机制。相关研究工作于2018年1月发表在Nature communications杂志。

PD是仅次于老年痴呆症的常见神经退行病。Parkin基因失活突变是常染色体隐性遗传性PD原因之一,导致50%家族性早发PD和20%散发性青少年PD。Parkin突变失活致其底物在多巴胺神经元中异常聚集,产生神经毒性,是致病原因。尽管目前已发现十几种Parkin底物,但是具体哪个底物导致PD病症并不清楚。突触结合蛋白Syt11与PD发生有遗传相关性,但Syt11的生理功能及其与PD的关系也不清楚。周专研究组通过研究神经分泌,去年发现Syt11是首个胞吞负向调节蛋白。它抑制细胞膜形成内陷结构,抑制clathrin介导的胞吞、囊泡循环和神经递质的可持续分泌(Wang et al., EMBO Reports, 2016)。

本文课题组进一步探索了Syt11在PD病理过程中的作用,利用小鼠细胞实验和在体实验证明Syt11是parkin蛋白的底物。parkin通过介导Syt11泛素化、蛋白降解,调节Syt11在多巴胺神经的异常积聚,从而抑制DA神经元的胞吞、囊泡循环和DA分泌,引发PD的病程和DA神经凋亡(如图)。本研究还解决了parkin致PD的分子病理机制,为治疗PD提供了潜在药靶。



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    2018-08-25 liuli5079
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    2018-01-24 1209e435m98(暂无昵称)

    学习了.谢谢分享

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=2087258, encodeId=6257208e258cf, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Sat Aug 25 12:32:00 CST 2018, time=2018-08-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1882779, encodeId=7d7d1882e7988, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=103, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Sun Aug 12 11:32:00 CST 2018, time=2018-08-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=281457, encodeId=48ba28145e1a, content=学习了.谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=152, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Wed Jan 24 07:04:59 CST 2018, time=2018-01-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=278366, encodeId=a6d92e8366d4, content=学习了.谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=143, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Sun Jan 14 09:16:16 CST 2018, time=2018-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=278146, encodeId=62962e814653, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=152, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e5171668917, createdName=坚强007, createdTime=Sat Jan 13 13:37:32 CST 2018, time=2018-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=277940, encodeId=89be2e7940b2, content=PD是仅次于老年痴呆症的常见神经退行病.Parkin基因失活突变是常染色体隐性遗传性PD原因之一.导致50%家族性早发PD和20%散发性青少年PD, beContent=null, objectType=article, channel=null, level=null, likeNumber=130, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7cJ6ejWUr2nIia8qOvAKNdLHr32Df6G8iaoaOx6pHaoiacwp26DaslxZHCGbibZhhCGven4rvmWP60GahtzgFjgCjR/0, createdBy=6b111703011, createdName=有备才能无患, createdTime=Fri Jan 12 22:33:11 CST 2018, time=2018-01-12, status=1, ipAttribution=)]
    2018-01-14 1209e435m98(暂无昵称)

    学习了.谢谢分享

    0

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    2018-01-13 坚强007

    学习

    0

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    2018-01-12 有备才能无患

    PD是仅次于老年痴呆症的常见神经退行病.Parkin基因失活突变是常染色体隐性遗传性PD原因之一.导致50%家族性早发PD和20%散发性青少年PD

    0

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