AJHG:MYLK功能丧失导致隐性巨膀胱细小结肠蠕动迟缓综合征

2017-07-22 Yara MedSci原创

该研究结果证明了MYLK可以作为参与MMIHS隐性致病基因,证实了这种内脏器官疾病与肌源性功能有关。

巨膀胱细小结肠蠕动迟缓综合征(MMIHS)是一种膀胱和肠道平滑肌收缩丧失的先天性疾病。迄今为止,人们已经发现由三个基因涉及MMIHS的发病机制,包括:ACTG2,MYH11和LMOD1。然而,对于大约10%的患病个体而言,疾病的遗传原因仍然是未知的,这表明该病的发生可能涉及其他基因。

在这里,研究人员对从没有已知的MMIHS相关基因变体的有近亲血缘的三个MMIHS患者进行了研究。通过进行纯合基因寻找和全外显子测序,他们在两个家族中都发现了肌球蛋白轻链激酶(MYLK)中的纯合突变体。在一个家族中确定了7个碱基的基因重复(c.3838_3844dupGAAAGCG [p.Glu1282_Glyfs * 51]),在另一个家族中发现了一个预测的剪接位点突变体(c.3985 + 5C> A)。随后的表达研究和剪接测定表明以上两种突变体都会影响正常的MYLK表达。正常情况下,MYLK编码肌球蛋白激活所需的重要激酶,并随后与肌动蛋白丝相互作用,调控平滑肌收缩。所以在MYLK表达异常的情况下,平滑肌细胞的收缩可能受损。Mylk条件性敲除小鼠模型患有严重的消化功能不良和膀胱功能异常,一定程度上支持了该基因参与MMIHS发病过程。

总之,该研究结果证明了MYLK可以作为参与MMIHS隐性致病的基因,证实了这种内脏器官疾病与肌源性功能有关。

原文出处:


本文为梅斯医生(MedSci)原创整理编译,转载需授权!

版权声明:
本网站所有内容来源注明为“梅斯医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于梅斯医学所有。非经授权,任何媒体、网站或个人不得转载,授权转载时须注明来源为“梅斯医学”。其它来源的文章系转载文章,或“梅斯号”自媒体发布的文章,仅系出于传递更多信息之目的,本站仅负责审核内容合规,其内容不代表本站立场,本站不负责内容的准确性和版权。如果存在侵权、或不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
在此留言
评论区 (3)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1949881, encodeId=10061949881a5, content=<a href='/topic/show?id=f59c48229dc' target=_blank style='color:#2F92EE;'>#巨膀胱#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=48229, encryptionId=f59c48229dc, topicName=巨膀胱)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f90281, createdName=lmm397, createdTime=Wed Jun 27 13:06:00 CST 2018, time=2018-06-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=227981, encodeId=a03422e981b9, 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=https://img.medsci.cn/20200816/e4675a86ea694f12b82202b320dc2654/12f6b900498349e994ce8f516a584d6a.jpg, createdBy=09431951290, createdName=大爰, createdTime=Sun Jul 30 08:50:52 CST 2017, time=2017-07-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1430901, encodeId=b1ac1430901ec, content=<a href='/topic/show?id=f9b9e9124a8' target=_blank style='color:#2F92EE;'>#综合征#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79124, encryptionId=f9b9e9124a8, topicName=综合征)], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyheQLjPSX3OUs5GmkyBlcCOwTPIeq3why9NGibxxUqYo6hcx8qZLHZFgNPnBK1yzWeOFpyg2OnWOt0/0, createdBy=fa4716, createdName=zhouqu_8, createdTime=Mon Jul 24 08:06:00 CST 2017, time=2017-07-24, status=1, ipAttribution=)]
    2018-06-27 lmm397
  2. [GetPortalCommentsPageByObjectIdResponse(id=1949881, encodeId=10061949881a5, content=<a href='/topic/show?id=f59c48229dc' target=_blank style='color:#2F92EE;'>#巨膀胱#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=48229, encryptionId=f59c48229dc, topicName=巨膀胱)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f90281, createdName=lmm397, createdTime=Wed Jun 27 13:06:00 CST 2018, time=2018-06-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=227981, encodeId=a03422e981b9, 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=https://img.medsci.cn/20200816/e4675a86ea694f12b82202b320dc2654/12f6b900498349e994ce8f516a584d6a.jpg, createdBy=09431951290, createdName=大爰, createdTime=Sun Jul 30 08:50:52 CST 2017, time=2017-07-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1430901, encodeId=b1ac1430901ec, content=<a href='/topic/show?id=f9b9e9124a8' target=_blank style='color:#2F92EE;'>#综合征#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79124, encryptionId=f9b9e9124a8, topicName=综合征)], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyheQLjPSX3OUs5GmkyBlcCOwTPIeq3why9NGibxxUqYo6hcx8qZLHZFgNPnBK1yzWeOFpyg2OnWOt0/0, createdBy=fa4716, createdName=zhouqu_8, createdTime=Mon Jul 24 08:06:00 CST 2017, time=2017-07-24, status=1, ipAttribution=)]
    2017-07-30 大爰

    学习了谢谢分享!!

    0

  3. [GetPortalCommentsPageByObjectIdResponse(id=1949881, encodeId=10061949881a5, content=<a href='/topic/show?id=f59c48229dc' target=_blank style='color:#2F92EE;'>#巨膀胱#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=48229, encryptionId=f59c48229dc, topicName=巨膀胱)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f90281, createdName=lmm397, createdTime=Wed Jun 27 13:06:00 CST 2018, time=2018-06-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=227981, encodeId=a03422e981b9, 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=https://img.medsci.cn/20200816/e4675a86ea694f12b82202b320dc2654/12f6b900498349e994ce8f516a584d6a.jpg, createdBy=09431951290, createdName=大爰, createdTime=Sun Jul 30 08:50:52 CST 2017, time=2017-07-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1430901, encodeId=b1ac1430901ec, content=<a href='/topic/show?id=f9b9e9124a8' target=_blank style='color:#2F92EE;'>#综合征#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79124, encryptionId=f9b9e9124a8, topicName=综合征)], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyheQLjPSX3OUs5GmkyBlcCOwTPIeq3why9NGibxxUqYo6hcx8qZLHZFgNPnBK1yzWeOFpyg2OnWOt0/0, createdBy=fa4716, createdName=zhouqu_8, createdTime=Mon Jul 24 08:06:00 CST 2017, time=2017-07-24, status=1, ipAttribution=)]