J Clin Invest:Tmtc4缺失能够激活未折叠蛋白响应,从而引起产后听力损失

2018-09-19 AlexYang MedSci原创

听力损失是一种明显的公共健康问题,在世界范围内影响着超过2.5个亿的人口。遗传和环境因素都与听力损失有关系,但是在许多案例中,潜在的细胞病理生理情况还没有很好的理解,这对未来的进一步的研究非常关键。最近,有研究人员发现,Tmtc4基因的去激活能够在小鼠中引起获得性听力损失,且该基因在小鼠耳蜗中广泛表达。进一步研究发现,Tmtc4能够在内质网中富集,并且能够调控钙离子动态和未折叠蛋白响应(UPR)。

听力损失是一种明显的公共健康问题,在世界范围内影响着超过2.5个亿的人口。遗传和环境因素都与听力损失有关系,但是在许多案例中,潜在的细胞病理生理情况还没有很好的理解,这对未来的进一步的研究非常关键。

最近,有研究人员发现,Tmtc4基因的去激活能够在小鼠中引起获得性听力损失,且该基因在小鼠耳蜗中广泛表达。进一步研究发现,Tmtc4能够在内质网中富集,并且能够调控钙离子动态和未折叠蛋白响应(UPR)。基于UPR和听力损失之间的遗传联系,研究人员阐释了更加常见的噪音诱导的听力损失(NIHL)与UPR之间具有直接的联系。这些试验结果也表明了一种新的治疗方法。另外,研究人员还阐释了在小鼠模型中,小分子UPR和压力响应调控子ISRIB(整合胁迫响应抑制剂),能够激活eIF2B来预防NIHL。更多的是,在反向遗传互补方法中,研究人员还阐释了Tmtc4和Chop的纯合失活要比单独敲除Tmtc4听力损失更轻。

最后,研究人员指出,他们的研究阐释了听力损伤的一种新的机制,并且强调一种人类听力损失潜在的治疗方法。

原始出处:

Li J, Akil O, Rouse SL et al. Deletion of Tmtc4 activates the unfolded protein response causing postnatalhearing loss. J Clin Invest. 06 Sep 2018.

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  2. [GetPortalCommentsPageByObjectIdResponse(id=2051243, encodeId=35b22051243a7, content=<a href='/topic/show?id=95f8e042dd' target=_blank style='color:#2F92EE;'>#EST#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=7042, encryptionId=95f8e042dd, topicName=EST)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e9a6357, createdName=xiangyuzhou971, createdTime=Sat Mar 30 09:54:00 CST 2019, time=2019-03-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1306260, encodeId=c6cd1306260a2, content=<a href='/topic/show?id=aeb639230b7' target=_blank style='color:#2F92EE;'>#听力#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=39230, encryptionId=aeb639230b7, topicName=听力)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=96d4340, createdName=ysjykql, createdTime=Thu Sep 20 22:54:00 CST 2018, time=2018-09-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=345644, encodeId=996a345644f3, content=嗯嗯,学习了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/07/16/3b24606172648eea459125cb74754afe.jpg, createdBy=6c022216608, createdName=liumin1987, createdTime=Wed Sep 19 09:05:13 CST 2018, time=2018-09-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=345629, encodeId=e9d7345629b3, content=学习了谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTLbTp9nZtjwVrSZNxAXbAicnKQWnic2eBdJUQYhxO36XdkstSicr7FVF8p5ReH4omtmsbnLdvZLiaJJ1A/132, createdBy=8bff2327056, createdName=kafei, createdTime=Wed Sep 19 08:15:48 CST 2018, time=2018-09-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=345628, encodeId=d28234562844, content=很好的学习机会, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/04/12/cd30eefc465f70dc4dad89bd57479781.jpg, createdBy=02be2318568, createdName=一天没事干, createdTime=Wed Sep 19 08:13:11 CST 2018, time=2018-09-19, status=1, ipAttribution=)]
    2018-09-20 ysjykql
  3. [GetPortalCommentsPageByObjectIdResponse(id=2051243, encodeId=35b22051243a7, content=<a href='/topic/show?id=95f8e042dd' target=_blank style='color:#2F92EE;'>#EST#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=7042, encryptionId=95f8e042dd, topicName=EST)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e9a6357, createdName=xiangyuzhou971, createdTime=Sat Mar 30 09:54:00 CST 2019, time=2019-03-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1306260, encodeId=c6cd1306260a2, content=<a href='/topic/show?id=aeb639230b7' target=_blank style='color:#2F92EE;'>#听力#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=39230, encryptionId=aeb639230b7, topicName=听力)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=96d4340, createdName=ysjykql, createdTime=Thu Sep 20 22:54:00 CST 2018, time=2018-09-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=345644, encodeId=996a345644f3, content=嗯嗯,学习了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/07/16/3b24606172648eea459125cb74754afe.jpg, createdBy=6c022216608, createdName=liumin1987, createdTime=Wed Sep 19 09:05:13 CST 2018, time=2018-09-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=345629, encodeId=e9d7345629b3, content=学习了谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTLbTp9nZtjwVrSZNxAXbAicnKQWnic2eBdJUQYhxO36XdkstSicr7FVF8p5ReH4omtmsbnLdvZLiaJJ1A/132, createdBy=8bff2327056, createdName=kafei, createdTime=Wed Sep 19 08:15:48 CST 2018, time=2018-09-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=345628, encodeId=d28234562844, content=很好的学习机会, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/04/12/cd30eefc465f70dc4dad89bd57479781.jpg, createdBy=02be2318568, createdName=一天没事干, createdTime=Wed Sep 19 08:13:11 CST 2018, time=2018-09-19, status=1, ipAttribution=)]
    2018-09-19 liumin1987

    嗯嗯,学习了。

    0

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    2018-09-19 kafei

    学习了谢谢

    0

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    2018-09-19 一天没事干

    很好的学习机会

    0

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