Cereb Cortex:自闭症相关的无义Foxp1突变体诱导自噬并延迟皮层神经元的径向迁移

2018-08-22 cuiguizhong MedSci原创

温州医科大学眼科学与眼科医院的Li X等人在Cereb Cortex发表了一项重要研究,他们通过构建了Foxp1(R521X)的人源突变体的小鼠,研究发现发育中的神经元细胞通过自噬作用但不通过NMD作用作为抵抗无义突变体聚集的保护机制,导致皮质发育受损。

温州医科大学眼科学与眼科医院的Li X等人在Cereb Cortex发表了一项重要研究,他们通过构建了Foxp1(R521X)的人源突变体的小鼠,研究发现发育中的神经元细胞通过自噬作用但不通过NMD作用作为抵抗无义突变体聚集的保护机制,导致皮质发育受损。

自闭症谱系障碍(ASD)是一种复杂的神经发育障碍,具有重要的遗传因素。在发育中的大脑皮层表达的转录因子FOXP1,ASD与FOXP1的失调相关。FOXP1(R525X)是在自闭症和严重精神发育迟滞患者中发现的一种从头杂合突变。为了探索ASD中FOXP1(R525X)对神经元的分子机制,研究者构建了Foxp1(R521X)的人源突变体的小鼠。

Foxp1(R521X)的异位表达导致神经母细胞瘤N2a细胞和发育中的神经细胞的细胞质聚集,并具有活跃的自噬。表达Foxp1(R521X)的皮质神经元表现出迁移延迟,树突形态改变。作为对照,突变体Y435X在细胞质中扩散表达,但在皮质中不诱导自噬和迁移延迟。如通过剪接依赖性NMD报道分子测定发现,胚胎皮质细胞具有最小的无义介导的mRNA衰变(NMD)活性。他们假设,发育中的神经元细胞通过自噬作用但不通过NMD作用作为抵抗无义突变体聚集的保护机制,导致皮质发育受损。

除了FOXP1的杂合性缺失,本研究针对ASD的发生发展提出了一种新的机制。这促进了我们对基因突变与相关精神疾病之间复杂关系的理解。

原文出处:

Li, X., et al., An Autism-Related, Nonsense Foxp1 Mutant Induces Autophagy and Delays Radial Migration of the Cortical Neurons. Cereb Cortex, 2018.

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    2018-08-24 xiongke014
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    2018-08-23 1209e435m98(暂无昵称)

    学习了,谢谢分享

    0

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    2018-08-23 秀红

    学习了

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1640948, encodeId=47b31640948b2, content=<a href='/topic/show?id=7c99939e3fd' target=_blank style='color:#2F92EE;'>#迁移#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=93973, encryptionId=7c99939e3fd, topicName=迁移)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d37c22750496, createdName=ms8888626721583891, createdTime=Fri Sep 28 07:50:00 CST 2018, time=2018-09-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1800193, encodeId=b35f1800193f7, content=<a href='/topic/show?id=b0b5e19596a' target=_blank style='color:#2F92EE;'>#皮层神经元#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71959, encryptionId=b0b5e19596a, topicName=皮层神经元)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/JHX80Wpw3cstP6RtQ1pO8asyNiah0uIJwh7hmKm1emARpicBibTeQrj1SN7YwGSwibOrIL2kZ9WHmRiaznSnuHhUJUg/132, createdBy=c7de2500155, createdName=ms3415360956839622, createdTime=Wed Oct 10 13:50:00 CST 2018, time=2018-10-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1527725, encodeId=c05e152e725c7, content=<a href='/topic/show?id=68b5863e5d2' target=_blank style='color:#2F92EE;'>#自闭#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=23, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=86375, encryptionId=68b5863e5d2, topicName=自闭)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=159511872623, createdName=xiongke014, createdTime=Fri Aug 24 13:50:00 CST 2018, time=2018-08-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=340315, encodeId=de3a340315a4, content=学习了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Thu Aug 23 07:31:28 CST 2018, time=2018-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=340257, encodeId=6a8e34025ea7, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/01/15/8213228fe923915543544ad3da7e1c64.jpg, createdBy=6bd82014262, createdName=秀红, createdTime=Thu Aug 23 05:47:45 CST 2018, time=2018-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=340232, encodeId=17cc34023222, content=学习了,谢谢分享。, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/xkvRjYnJzzRJ2R0y7VhicibvkjPWHjIMmu4ZpKnE9cWAu4lVicS3uDUCfF4M4JWvrkrYfpb2KehPV0Ee29tPqyPEebBUibiaKhnvD/0, createdBy=f8412001184, createdName=惠映实验室, createdTime=Wed Aug 22 23:16:45 CST 2018, time=2018-08-22, status=1, ipAttribution=)]
    2018-08-22 惠映实验室

    学习了,谢谢分享。

    0

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