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J Dent Res:调节Wnt信号可以恢复Pax9基因突变小鼠的腭形态发生

2017-07-18 MedSci MedSci原创

腭裂是在胚胎发育过程中由于腭发生受到干扰而引起的一种常见的出生缺陷。通过基因突变体内干扰Wnt通路内信号发现,Wnt信号通路与人和小鼠唇腭裂的发生存在一定的联系,但是在次生腭发育过程中的经典Wnt信号以及其调节机制还不十分明确。

腭裂是在胚胎发育过程中由于腭发生受到干扰而引起的一种常见的出生缺陷。通过基因突变体内干扰Wnt通路内信号发现,Wnt信号通路与人和小鼠唇腭裂的发生存在一定的联系,但是在次生腭发育过程中的经典Wnt信号以及其调节机制还不十分明确。

该项研究发现,Wnt信号通路在Pax9介导对次生腭发育的调控作用中扮演着非常重要的角色。结果显示,在发育中的腭间质,特别是腭突的后部区域,Pax9基因缺陷胚胎中的腭裂致病机制伴随着Axin2明显的表达下调(Axin2,经典Wnt信号通路的内源性靶点)。与同窝对照小鼠相比较,胚胎13.5天的Pax9基因缺陷小鼠腭突后部区域中编码分泌的Wnt信号拮抗剂- Dkk2的表达显著上调。相反,经典Wnt信号的重要转录辅助激活因子-活性β-catenin蛋白表达明显下调。研究发现,在腭突形态发生过程中,小鼠子宫内小分子介导的Dickkopf (DKK)活性抑制可以部分恢复Pax9基因缺陷胚胎中的次生腭发育。并且,基因失活Wise(表达在发育中的腭突,编码另一个经典Wnt信号的分泌拮抗剂),也可以恢复Pax9基因缺陷小鼠中的腭形态发生。另外,Pax9del/del胚胎展现出腭突高度/重新定位的缺陷,并且显著减少了透明质酸(一种高分子量的胞外基质糖胺聚糖)的累积,它对80% Pax9del/del小鼠的腭突高度起到了重要作用;而在小鼠胚胎中双重突变Wise基因却可以恢复腭突高度/重新定位,并且还可以恢复腭间质中透明质酸的累积。

结论:这些结果表明,经典Wnt信号通路在腭发育过程中起到了决定性作用。它通过激活下游的Pax9基因调控腭的形态发生。

原始出处:

Li C, Lan Y, et al. Modulating Wnt Signaling Rescues Palate Morphogenesis in Pax9 Mutant Mice. J Dent Res. 2017 Jul 1:22034517719865. doi: 10.1177/0022034517719865.

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  1. [GetPortalCommentsPageByObjectIdResponse(id=1734717, encodeId=fd171e34717d4, content=<a href='/topic/show?id=7e6818e415f' target=_blank style='color:#2F92EE;'>#Wnt信号#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=18741, encryptionId=7e6818e415f, topicName=Wnt信号)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=969033807411, createdName=jjjiang0210, createdTime=Thu May 03 05:52:00 CST 2018, time=2018-05-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1598581, encodeId=2c7e15985818b, content=<a href='/topic/show?id=c4da18e2588' target=_blank style='color:#2F92EE;'>#WNT#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=134, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=18725, encryptionId=c4da18e2588, topicName=WNT)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=eb3518632538, createdName=zhwj, createdTime=Thu Jul 20 12:52:00 CST 2017, time=2017-07-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=223698, encodeId=ea4422369844, content=非常好的文章,学习了,很受益, beContent=null, objectType=article, channel=null, level=null, likeNumber=111, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7LIiaRZTzJ3SEfiauCzTMPW7YvPPYLNJBXG9oh6Al1icq2VQQkIHWxqXehcicTS62YKJVBhxeth3wggw/0, createdBy=7ce01621306, createdName=天涯183, createdTime=Wed Jul 19 05:22:45 CST 2017, time=2017-07-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=223664, encodeId=7b782236640e, content=经典Wnt信号通路在腭发育过程中起到了决定性作用。它通过激活下游的Pax9基因调控腭的形态发生。, beContent=null, objectType=article, channel=null, level=null, likeNumber=112, 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=Tue Jul 18 22:28:20 CST 2017, time=2017-07-18, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=1734717, encodeId=fd171e34717d4, content=<a href='/topic/show?id=7e6818e415f' target=_blank style='color:#2F92EE;'>#Wnt信号#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=18741, encryptionId=7e6818e415f, topicName=Wnt信号)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=969033807411, createdName=jjjiang0210, createdTime=Thu May 03 05:52:00 CST 2018, time=2018-05-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1598581, encodeId=2c7e15985818b, content=<a href='/topic/show?id=c4da18e2588' target=_blank style='color:#2F92EE;'>#WNT#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=134, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=18725, encryptionId=c4da18e2588, topicName=WNT)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=eb3518632538, createdName=zhwj, createdTime=Thu Jul 20 12:52:00 CST 2017, time=2017-07-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=223698, encodeId=ea4422369844, content=非常好的文章,学习了,很受益, beContent=null, objectType=article, channel=null, level=null, likeNumber=111, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7LIiaRZTzJ3SEfiauCzTMPW7YvPPYLNJBXG9oh6Al1icq2VQQkIHWxqXehcicTS62YKJVBhxeth3wggw/0, createdBy=7ce01621306, createdName=天涯183, createdTime=Wed Jul 19 05:22:45 CST 2017, time=2017-07-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=223664, encodeId=7b782236640e, content=经典Wnt信号通路在腭发育过程中起到了决定性作用。它通过激活下游的Pax9基因调控腭的形态发生。, beContent=null, objectType=article, channel=null, level=null, likeNumber=112, 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=Tue Jul 18 22:28:20 CST 2017, time=2017-07-18, status=1, ipAttribution=)]
    2017-07-20 zhwj
  3. [GetPortalCommentsPageByObjectIdResponse(id=1734717, encodeId=fd171e34717d4, content=<a href='/topic/show?id=7e6818e415f' target=_blank style='color:#2F92EE;'>#Wnt信号#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=18741, encryptionId=7e6818e415f, topicName=Wnt信号)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=969033807411, createdName=jjjiang0210, createdTime=Thu May 03 05:52:00 CST 2018, time=2018-05-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1598581, encodeId=2c7e15985818b, content=<a href='/topic/show?id=c4da18e2588' target=_blank style='color:#2F92EE;'>#WNT#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=134, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=18725, encryptionId=c4da18e2588, topicName=WNT)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=eb3518632538, createdName=zhwj, createdTime=Thu Jul 20 12:52:00 CST 2017, time=2017-07-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=223698, encodeId=ea4422369844, content=非常好的文章,学习了,很受益, beContent=null, objectType=article, channel=null, level=null, likeNumber=111, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7LIiaRZTzJ3SEfiauCzTMPW7YvPPYLNJBXG9oh6Al1icq2VQQkIHWxqXehcicTS62YKJVBhxeth3wggw/0, createdBy=7ce01621306, createdName=天涯183, createdTime=Wed Jul 19 05:22:45 CST 2017, time=2017-07-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=223664, encodeId=7b782236640e, content=经典Wnt信号通路在腭发育过程中起到了决定性作用。它通过激活下游的Pax9基因调控腭的形态发生。, beContent=null, objectType=article, channel=null, level=null, likeNumber=112, 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=Tue Jul 18 22:28:20 CST 2017, time=2017-07-18, status=1, ipAttribution=)]
    2017-07-19 天涯183

    非常好的文章,学习了,很受益

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1734717, encodeId=fd171e34717d4, content=<a href='/topic/show?id=7e6818e415f' target=_blank style='color:#2F92EE;'>#Wnt信号#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=18741, encryptionId=7e6818e415f, topicName=Wnt信号)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=969033807411, createdName=jjjiang0210, createdTime=Thu May 03 05:52:00 CST 2018, time=2018-05-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1598581, encodeId=2c7e15985818b, content=<a href='/topic/show?id=c4da18e2588' target=_blank style='color:#2F92EE;'>#WNT#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=134, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=18725, encryptionId=c4da18e2588, topicName=WNT)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=eb3518632538, createdName=zhwj, createdTime=Thu Jul 20 12:52:00 CST 2017, time=2017-07-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=223698, encodeId=ea4422369844, content=非常好的文章,学习了,很受益, beContent=null, objectType=article, channel=null, level=null, likeNumber=111, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7LIiaRZTzJ3SEfiauCzTMPW7YvPPYLNJBXG9oh6Al1icq2VQQkIHWxqXehcicTS62YKJVBhxeth3wggw/0, createdBy=7ce01621306, createdName=天涯183, createdTime=Wed Jul 19 05:22:45 CST 2017, time=2017-07-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=223664, encodeId=7b782236640e, content=经典Wnt信号通路在腭发育过程中起到了决定性作用。它通过激活下游的Pax9基因调控腭的形态发生。, beContent=null, objectType=article, channel=null, level=null, likeNumber=112, 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=Tue Jul 18 22:28:20 CST 2017, time=2017-07-18, status=1, ipAttribution=)]
    2017-07-18 有备才能无患

    经典Wnt信号通路在腭发育过程中起到了决定性作用。它通过激活下游的Pax9基因调控腭的形态发生。

    0

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