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Current biology:为什么总睡不够?可能是基因问题

2015-06-24 佚名 生物谷

大部分人每天需要7到8小时睡眠时间保证机体正常功能,但也有一些人他们需要的睡眠时间要少得多。这种差别很大程度上是由基因的多样性决定的。在最近一项发表在current biology上的研究中,研究人员在果蝇体内发现一个叫作Taranis的基因对于正常睡眠非常必要。   研究人员首先对许多果蝇突变系进行了筛选,发现一个叫作Taranis的基因发生突变会导致果蝇睡眠时间大大减少。通过一系

大部分人每天需要7到8小时睡眠时间保证机体正常功能,但也有一些人他们需要的睡眠时间要少得多。这种差别很大程度上是由基因的多样性决定的。在最近一项发表在current biology上的研究中,研究人员在果蝇体内发现一个叫作Taranis的基因对于正常睡眠非常必要。

 
研究人员首先对许多果蝇突变系进行了筛选,发现一个叫作Taranis的基因发生突变会导致果蝇睡眠时间大大减少。通过一系列遗传学和生化实验,研究人员对Taranis编码的蛋白进行了追踪,观察Taranis是如何与其他蛋白发生相互作用的,结果发现Taranis能够与一个已知的睡眠调控因子--Cyclin A发生结合,这表明Taranis与Cyclin A形成了一个新的分子机制导致cdk1失活,而正常情况下Cdk1能够抑制睡眠,促进觉醒。
 
先前研究已经证明Cyclin A 只在一小部分神经元细胞中表达。研究人员发现这些神经元细胞位于果蝇大脑的一个区域,相当于人类的下丘脑--下丘脑是人类脑部结构中与睡眠有关的一个中心。当在那一小部分神经元细胞中敲低Taranis基因的表达,神经元细胞发生激活,果蝇的睡眠时间大大减少。研究人员指出,在睡眠过程中Taranis帮助抑制的这些神经元可能是果蝇大脑中负责唤醒的重要区域。
 
Taranis在人类中有同源蛋白--Trip-Br家族的转录调控因子,但该家族成员是否通过类似的方式参与人类睡眠调节仍未可知。
 
总得来说,这项研究以果蝇为研究模型发现Taranis能够与Cyclin A结合抑制Cdk1活性,从而保证正常睡眠时间。

原始出处:

Dinis J.S. Afonso, Die Liu, Daniel R. Machado, Huihui Pan, James E.C. Jepson5, Dragana Rogulja, Kyunghee Koh.TARANIS Functions with Cyclin A and Cdk1 in a Novel Arousal Center to Control Sleep in Drosophila.Current Biology, June 18, 2015.DOI: http://dx.doi.org/10.1016/j.cub.2015.05.037
 

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  2. [GetPortalCommentsPageByObjectIdResponse(id=1766947, encodeId=21a61e6694708, content=<a href='/topic/show?id=64f5343e2f' target=_blank style='color:#2F92EE;'>#Biol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3437, encryptionId=64f5343e2f, topicName=Biol)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=446937890434, createdName=12498ebem31暂无昵称, createdTime=Mon Oct 26 14:08:00 CST 2015, time=2015-10-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1917166, encodeId=841a191e1661e, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Thu Nov 19 17:08:00 CST 2015, time=2015-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=29844, encodeId=a6a729844b4, content=好文章, beContent=null, objectType=article, channel=null, level=null, likeNumber=217, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=3b2c1627329, createdName=owlhealth, createdTime=Mon Jun 29 15:09:00 CST 2015, time=2015-06-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=29121, encodeId=55c4291214f, content=看看, beContent=null, objectType=article, channel=null, level=null, likeNumber=161, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ee0d1618732, createdName=huaxipanxing, createdTime=Thu Jun 25 22:16:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=28895, encodeId=5b592889555, content=遗传很重要啊, beContent=null, objectType=article, channel=null, level=null, likeNumber=214, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=48ce1618316, createdName=stupidox, createdTime=Thu Jun 25 14:46:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=28871, encodeId=1dcf288e1cd, content=了, beContent=null, objectType=article, channel=null, level=null, likeNumber=124, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0d231626576, createdName=jjzouyan, createdTime=Thu Jun 25 12:45:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=28693, encodeId=8c472869385, content=原来睡眠和基因有关,我总睡不够, beContent=null, objectType=article, channel=null, level=null, likeNumber=182, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2be01625436, createdName=fatalmelanie, createdTime=Wed Jun 24 10:38:00 CST 2015, time=2015-06-24, status=1, ipAttribution=)]
    2015-11-19 sunylz
  3. [GetPortalCommentsPageByObjectIdResponse(id=1766947, encodeId=21a61e6694708, content=<a href='/topic/show?id=64f5343e2f' target=_blank style='color:#2F92EE;'>#Biol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3437, encryptionId=64f5343e2f, topicName=Biol)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=446937890434, createdName=12498ebem31暂无昵称, createdTime=Mon Oct 26 14:08:00 CST 2015, time=2015-10-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1917166, encodeId=841a191e1661e, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Thu Nov 19 17:08:00 CST 2015, time=2015-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=29844, encodeId=a6a729844b4, content=好文章, beContent=null, objectType=article, channel=null, level=null, likeNumber=217, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=3b2c1627329, createdName=owlhealth, createdTime=Mon Jun 29 15:09:00 CST 2015, time=2015-06-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=29121, encodeId=55c4291214f, content=看看, beContent=null, objectType=article, channel=null, level=null, likeNumber=161, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ee0d1618732, createdName=huaxipanxing, createdTime=Thu Jun 25 22:16:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=28895, encodeId=5b592889555, content=遗传很重要啊, beContent=null, objectType=article, channel=null, level=null, likeNumber=214, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=48ce1618316, createdName=stupidox, createdTime=Thu Jun 25 14:46:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=28871, encodeId=1dcf288e1cd, content=了, beContent=null, objectType=article, channel=null, level=null, likeNumber=124, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0d231626576, createdName=jjzouyan, createdTime=Thu Jun 25 12:45:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=28693, encodeId=8c472869385, content=原来睡眠和基因有关,我总睡不够, beContent=null, objectType=article, channel=null, level=null, likeNumber=182, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2be01625436, createdName=fatalmelanie, createdTime=Wed Jun 24 10:38:00 CST 2015, time=2015-06-24, status=1, ipAttribution=)]
    2015-06-29 owlhealth

    好文章

    0

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    2015-06-25 huaxipanxing

    看看

    0

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    2015-06-25 stupidox

    遗传很重要啊

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1766947, encodeId=21a61e6694708, content=<a href='/topic/show?id=64f5343e2f' target=_blank style='color:#2F92EE;'>#Biol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3437, encryptionId=64f5343e2f, topicName=Biol)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=446937890434, createdName=12498ebem31暂无昵称, createdTime=Mon Oct 26 14:08:00 CST 2015, time=2015-10-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1917166, encodeId=841a191e1661e, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Thu Nov 19 17:08:00 CST 2015, time=2015-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=29844, encodeId=a6a729844b4, content=好文章, beContent=null, objectType=article, channel=null, level=null, likeNumber=217, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=3b2c1627329, createdName=owlhealth, createdTime=Mon Jun 29 15:09:00 CST 2015, time=2015-06-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=29121, encodeId=55c4291214f, content=看看, beContent=null, objectType=article, channel=null, level=null, likeNumber=161, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ee0d1618732, createdName=huaxipanxing, createdTime=Thu Jun 25 22:16:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=28895, encodeId=5b592889555, content=遗传很重要啊, beContent=null, objectType=article, channel=null, level=null, likeNumber=214, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=48ce1618316, createdName=stupidox, createdTime=Thu Jun 25 14:46:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=28871, encodeId=1dcf288e1cd, content=了, beContent=null, objectType=article, channel=null, level=null, likeNumber=124, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0d231626576, createdName=jjzouyan, createdTime=Thu Jun 25 12:45:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=28693, encodeId=8c472869385, content=原来睡眠和基因有关,我总睡不够, beContent=null, objectType=article, channel=null, level=null, likeNumber=182, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2be01625436, createdName=fatalmelanie, createdTime=Wed Jun 24 10:38:00 CST 2015, time=2015-06-24, status=1, ipAttribution=)]
    2015-06-25 jjzouyan

    0

  7. [GetPortalCommentsPageByObjectIdResponse(id=1766947, encodeId=21a61e6694708, content=<a href='/topic/show?id=64f5343e2f' target=_blank style='color:#2F92EE;'>#Biol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3437, encryptionId=64f5343e2f, topicName=Biol)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=446937890434, createdName=12498ebem31暂无昵称, createdTime=Mon Oct 26 14:08:00 CST 2015, time=2015-10-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1917166, encodeId=841a191e1661e, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Thu Nov 19 17:08:00 CST 2015, time=2015-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=29844, encodeId=a6a729844b4, content=好文章, beContent=null, objectType=article, channel=null, level=null, likeNumber=217, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=3b2c1627329, createdName=owlhealth, createdTime=Mon Jun 29 15:09:00 CST 2015, time=2015-06-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=29121, encodeId=55c4291214f, content=看看, beContent=null, objectType=article, channel=null, level=null, likeNumber=161, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ee0d1618732, createdName=huaxipanxing, createdTime=Thu Jun 25 22:16:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=28895, encodeId=5b592889555, content=遗传很重要啊, beContent=null, objectType=article, channel=null, level=null, likeNumber=214, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=48ce1618316, createdName=stupidox, createdTime=Thu Jun 25 14:46:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=28871, encodeId=1dcf288e1cd, content=了, beContent=null, objectType=article, channel=null, level=null, likeNumber=124, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0d231626576, createdName=jjzouyan, createdTime=Thu Jun 25 12:45:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=28693, encodeId=8c472869385, content=原来睡眠和基因有关,我总睡不够, beContent=null, objectType=article, channel=null, level=null, likeNumber=182, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2be01625436, createdName=fatalmelanie, createdTime=Wed Jun 24 10:38:00 CST 2015, time=2015-06-24, status=1, ipAttribution=)]
    2015-06-24 fatalmelanie

    原来睡眠和基因有关,我总睡不够

    0

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