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Nature:抑癌基因p53和罕见发育障碍之间的分子关联

2014-08-12 佚名 生物谷

CHARGE综合症影响着万分之一的婴儿的健康,其常见的症状表现为:眼缺损、心脏缺陷和后鼻孔闭锁等,起初,研究者在研究该疾病的发病机制时检测了肿瘤抑制蛋白p53的特性,并没有调查发育的障碍,但是当小鼠模型产生了一系列的机体缺失时,研究者们就将p53和CHARGE综合症的发病联系起来了。 近日,刊登在国际杂志Nature上的一篇研究文章中,来自索尔克研究所的研究者表示,p53或许和CHARGE

CHARGE综合症影响着万分之一的婴儿的健康,其常见的症状表现为:眼缺损、心脏缺陷和后鼻孔闭锁等,起初,研究者在研究该疾病的发病机制时检测了肿瘤抑制蛋白p53的特性,并没有调查发育的障碍,但是当小鼠模型产生了一系列的机体缺失时,研究者们就将p53和CHARGE综合症的发病联系起来了。

近日,刊登在国际杂志Nature上的一篇研究文章中,来自索尔克研究所的研究者表示,p53或许和CHARGE综合症的发病直接相关;这项研究中研究者开发了一种p53突变的小鼠模型,目的是想调查p53在抑制肿瘤发生过程中的作用,研究者发现仅能表达该突变蛋白的小鼠可以存活,而对于异质体的小鼠来讲往往会引发CHARGE综合症,而且在母体子宫内会死亡。

p53是一种细胞质量控制调节器,其可以抑制患病细胞发生分裂,并且杀灭患病细胞;当实验小鼠机体细胞中有一个拷贝的突变p53基因和一个拷贝的正常p53时,其往往会产生杂合体蛋白质,这种杂合体p53蛋白的产生不能被关闭,但是其可以维持诱发细胞死亡的能力;更有意思的是,这种杂合体蛋白仅可以影响特定类型的细胞,引发机体出现CHARGE的症状。

CHARGE综合症发生的机制目前仍是个谜,尽管曾经研究者发现该疾病和基因CHD7相关,随后研究人员对CHD7和p53的关联进行了研究,结果发现CHD7蛋白质可以保持p53蛋白质处于关闭状态。

“这项研究中研究者发现p53和CHARGE综合症的发病相关,阐明CHARGE综合症发病的分子路径或可以帮助开发针对该疾病的靶向疗法。”研究者Donna Martin博士说道。

原始出处:

Lei Pan, Su Wang, Tinglin Lu, Changjiang Weng, Xiaoqing Song, Joseph K. Park, Jin Sun, Zhi-Hao Yang, Junjing Yu, Hong Tang, Dennis M. McKearin, Daniel A. Chamovitz, Jianquan Ni & Ting Xie.Protein competition switches the function of COP9 from self-renewal to differentiation.Nature.doi:10.1038/nature13562

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    2015-07-11 liye789132251
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    2014-08-14 neurowu
  6. [GetPortalCommentsPageByObjectIdResponse(id=1880226, encodeId=079d1880226a3, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Sat Jul 11 06:42:00 CST 2015, time=2015-07-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1640639, encodeId=93e116406395a, content=<a href='/topic/show?id=fd575494e5e' target=_blank style='color:#2F92EE;'>#抑癌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54947, encryptionId=fd575494e5e, topicName=抑癌)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=35f822706827, createdName=jingyanzhu715_39486108, createdTime=Wed Apr 29 22:42:00 CST 2015, time=2015-04-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2060808, encodeId=9cd0206080892, content=<a href='/topic/show?id=c73f3e96355' target=_blank style='color:#2F92EE;'>#发育障碍#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=37963, encryptionId=c73f3e96355, topicName=发育障碍)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=295c372, createdName=chaojitidian, createdTime=Mon Nov 10 10:42:00 CST 2014, time=2014-11-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1323236, encodeId=9e5713232362c, content=<a href='/topic/show?id=9934549500e' target=_blank style='color:#2F92EE;'>#抑癌基因#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54950, encryptionId=9934549500e, topicName=抑癌基因)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7e622500011, createdName=12498484m46(暂无昵称), createdTime=Thu Aug 14 00:42:00 CST 2014, time=2014-08-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1347018, encodeId=04d2134e018c1, content=<a href='/topic/show?id=88713e938c1' target=_blank style='color:#2F92EE;'>#发育#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=37938, encryptionId=88713e938c1, topicName=发育)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f4c124, createdName=neurowu, createdTime=Thu Aug 14 00:42:00 CST 2014, time=2014-08-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1372356, encodeId=22f013e235628, content=<a href='/topic/show?id=9d861362e53' target=_blank style='color:#2F92EE;'>#p53#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13627, encryptionId=9d861362e53, topicName=p53)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5d70341, createdName=zhishijing, createdTime=Thu Aug 14 00:42:00 CST 2014, time=2014-08-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1373864, encodeId=234a13e3864c4, content=<a href='/topic/show?id=3644e1286f1' target=_blank style='color:#2F92EE;'>#癌基因#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71286, encryptionId=3644e1286f1, topicName=癌基因)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ee7b365, createdName=zhucaizhong7766, createdTime=Thu Aug 14 00:42:00 CST 2014, time=2014-08-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1467057, encodeId=3a72146e05759, content=<a href='/topic/show?id=ef32e9539e8' target=_blank style='color:#2F92EE;'>#罕见#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79539, encryptionId=ef32e9539e8, topicName=罕见)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=29f36868190, createdName=syscxl, createdTime=Thu Aug 14 00:42:00 CST 2014, time=2014-08-14, status=1, ipAttribution=)]
    2014-08-14 zhishijing
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    2014-08-14 syscxl

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