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Neuron:重磅!基因突变或可解释多发性硬化症发病之谜

2016-06-05 佚名 生物谷

图片来源:medicalxpress.com 尽管多发性硬化症(MS)仅发生在特定的家庭中,但在寻找和该疾病发生相关的基因上,科学家们却屡屡遭受失败,如今来自英属哥伦比亚大学的研究人员通过研究就报道了一种特殊的基因突变,其或许和多发性硬化症的发病存在直接关联,相关研究刊登于国际杂志Neuron上。 研究者Carles Vilarino-Guell说道,这项研究对于我们理解多发性硬化症的发病

图片来源:medicalxpress.com

尽管多发性硬化症(MS)仅发生在特定的家庭中,但在寻找和该疾病发生相关的基因上,科学家们却屡屡遭受失败,如今来自英属哥伦比亚大学的研究人员通过研究就报道了一种特殊的基因突变,其或许和多发性硬化症的发病存在直接关联,相关研究刊登于国际杂志Neuron上。

研究者Carles Vilarino-Guell说道,这项研究对于我们理解多发性硬化症的发病机制非常重要,目前我们并不清楚到底是哪种生物学过程导致多发性硬化症的发生,而基于本文研究,科学家们或许就有望开发出治疗多发性硬化症的新型疗法。

多发性硬化症是一种特殊的神经变性疾病,在患者机体中,免疫系统会攻击保护神经纤维的髓磷脂,从而影响大脑和机体之间的信息传递,该疾病在全球影响着大约200万人的健康,而且目前对于严重的进行性的多发性硬化症科学家们并没有有效的疗法进行治疗。大约10%至15%的多发性硬化症病例都存在一种特殊的遗传成分,但截至目前为止,研究者进行大量的遗传学研究仅在多发性硬化症发病和特殊基因突变间发现了微弱的关联,相比较而言,携带新型基因突变的个体或许有70%的患病风险。

当前研究中,研究人员对来自加拿大多发性硬化症遗传易感性研究计划中的研究材料进行分析,该计划包含了加拿大近乎2000个家庭成员的遗传物质,研究者对均患多发性硬化症的家庭进行研究(两代人,5名患病个体),同时进行外显子组测序(Exome sequencing)来寻找所有家庭患病成员机体中的罕见编码突变,在鉴别出特殊的遗传突变后,研究人员重新对数据库进行了分析,在其它的多发性硬化症家庭中也发现了相同的基因突变,更有意思的是,这些家庭中的所有携带该基因突变的患者都表现为进行性的多发性硬化症。

神经科学家Weihong Song说道,我们发现的名为NR1H3的基因突变是一种特殊的错义突变,其会引发基因功能的丧失,即LXRA蛋白功能的丧失,LXRA蛋白可以控制特殊基因的转录调节,而这些基因主要参与机体脂质的动态平衡、炎症及先天免疫功能。研究者指出,敲除该基因的小鼠往往存在神经学问题,包括髓磷脂产量的下降,而且目前有明确的证据认为该突变可以引发基因生物学功能的丧失,LXRA蛋白的缺失也会导致家族性多发性硬化症的发生。

研究者Carles Vilarino-Guell补充道,尽管这种新型突变仅在千分之一的多发性硬化症患者机体中存在,但进行关联性分析,研究者在相同基因中发现了常见的突变,这种基因就是引发多发性硬化症进展的风险因子;因此如果患者机体中不存在罕见的突变,靶向作用该通路的疗法或许就可以帮助治疗多发性硬化症患者。

最后研究者表示,本文研究或可帮助开发研究多发性硬化症的细胞和动物模型,而新型模型的开发或许也可以作为一种研究工具来助力人类多发性硬化症发病机制,及新型药物疗法的开发和研究。

原始出处

Zhe Wang5, A. Dessa Sadovnick5, Anthony L. Traboulsee5, Jay P. Ross, Cecily Q. Bernales, Mary Encarnacion, Irene M. Yee, Madonna de Lemos, Talitha Greenwood, Joshua D. Lee, Galen Wright, Colin J. Ross, Si Zhang, Weihong Songcorrespondenceemail, Carles Vilariño-Güell Nuclear Receptor NR1H3 in Familial Multiple Sclerosis.Neuron.2016

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    2016-12-01 by2021
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    2016-09-14 jml2009
  4. [GetPortalCommentsPageByObjectIdResponse(id=1751814, encodeId=06141e518148e, content=<a href='/topic/show?id=9b6a12e0155' target=_blank style='color:#2F92EE;'>#Neuron#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12701, encryptionId=9b6a12e0155, topicName=Neuron)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c9c736410065, createdName=by2021, createdTime=Thu Dec 01 09:16:00 CST 2016, time=2016-12-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1982920, encodeId=e224198292008, content=<a href='/topic/show?id=a7a7e359478' target=_blank style='color:#2F92EE;'>#硬化症#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=85, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73594, encryptionId=a7a7e359478, topicName=硬化症)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a691420, createdName=30397604, createdTime=Sat Nov 26 03:16:00 CST 2016, time=2016-11-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1889672, encodeId=3b0518896e228, content=<a href='/topic/show?id=760c430895a' target=_blank style='color:#2F92EE;'>#多发性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=43089, encryptionId=760c430895a, topicName=多发性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=04d6114, createdName=jml2009, createdTime=Wed Sep 14 16:16:00 CST 2016, time=2016-09-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1548843, encodeId=5e6215488431f, content=<a href='/topic/show?id=f7879600061' target=_blank style='color:#2F92EE;'>#重磅#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=96000, encryptionId=f7879600061, topicName=重磅)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=3acc14121561, createdName=xxxx1054, createdTime=Tue Jun 07 02:16:00 CST 2016, time=2016-06-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88762, encodeId=1cfa88e62b9, content=这个不错啊, beContent=null, objectType=article, channel=null, level=null, likeNumber=114, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7cde98330, createdName=milkshark, createdTime=Mon Jun 06 07:01:00 CST 2016, time=2016-06-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88763, encodeId=9bc488e63c2, content=值得细读, beContent=null, objectType=article, channel=null, level=null, likeNumber=138, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7cde98330, createdName=milkshark, createdTime=Mon Jun 06 07:01:00 CST 2016, time=2016-06-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88602, encodeId=acf18860211, content=不错的文章,多学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=141, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=53751677671, createdName=沉心多思, createdTime=Sun Jun 05 21:04:00 CST 2016, time=2016-06-05, status=1, ipAttribution=)]
    2016-06-07 xxxx1054
  5. [GetPortalCommentsPageByObjectIdResponse(id=1751814, encodeId=06141e518148e, content=<a href='/topic/show?id=9b6a12e0155' target=_blank style='color:#2F92EE;'>#Neuron#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12701, encryptionId=9b6a12e0155, topicName=Neuron)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c9c736410065, createdName=by2021, createdTime=Thu Dec 01 09:16:00 CST 2016, time=2016-12-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1982920, encodeId=e224198292008, content=<a href='/topic/show?id=a7a7e359478' target=_blank style='color:#2F92EE;'>#硬化症#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=85, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73594, encryptionId=a7a7e359478, topicName=硬化症)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a691420, createdName=30397604, createdTime=Sat Nov 26 03:16:00 CST 2016, time=2016-11-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1889672, encodeId=3b0518896e228, content=<a href='/topic/show?id=760c430895a' target=_blank style='color:#2F92EE;'>#多发性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=43089, encryptionId=760c430895a, topicName=多发性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=04d6114, createdName=jml2009, createdTime=Wed Sep 14 16:16:00 CST 2016, time=2016-09-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1548843, encodeId=5e6215488431f, content=<a href='/topic/show?id=f7879600061' target=_blank style='color:#2F92EE;'>#重磅#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=96000, encryptionId=f7879600061, topicName=重磅)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=3acc14121561, createdName=xxxx1054, createdTime=Tue Jun 07 02:16:00 CST 2016, time=2016-06-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88762, encodeId=1cfa88e62b9, content=这个不错啊, beContent=null, objectType=article, channel=null, level=null, likeNumber=114, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7cde98330, createdName=milkshark, createdTime=Mon Jun 06 07:01:00 CST 2016, time=2016-06-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88763, encodeId=9bc488e63c2, content=值得细读, beContent=null, objectType=article, channel=null, level=null, likeNumber=138, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7cde98330, createdName=milkshark, createdTime=Mon Jun 06 07:01:00 CST 2016, time=2016-06-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88602, encodeId=acf18860211, content=不错的文章,多学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=141, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=53751677671, createdName=沉心多思, createdTime=Sun Jun 05 21:04:00 CST 2016, time=2016-06-05, status=1, ipAttribution=)]
    2016-06-06 milkshark

    这个不错啊

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1751814, encodeId=06141e518148e, content=<a href='/topic/show?id=9b6a12e0155' target=_blank style='color:#2F92EE;'>#Neuron#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12701, encryptionId=9b6a12e0155, topicName=Neuron)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c9c736410065, createdName=by2021, createdTime=Thu Dec 01 09:16:00 CST 2016, time=2016-12-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1982920, encodeId=e224198292008, content=<a href='/topic/show?id=a7a7e359478' target=_blank style='color:#2F92EE;'>#硬化症#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=85, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73594, encryptionId=a7a7e359478, topicName=硬化症)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a691420, createdName=30397604, createdTime=Sat Nov 26 03:16:00 CST 2016, time=2016-11-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1889672, encodeId=3b0518896e228, content=<a href='/topic/show?id=760c430895a' target=_blank style='color:#2F92EE;'>#多发性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=43089, encryptionId=760c430895a, topicName=多发性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=04d6114, createdName=jml2009, createdTime=Wed Sep 14 16:16:00 CST 2016, time=2016-09-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1548843, encodeId=5e6215488431f, content=<a href='/topic/show?id=f7879600061' target=_blank style='color:#2F92EE;'>#重磅#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=96000, encryptionId=f7879600061, topicName=重磅)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=3acc14121561, createdName=xxxx1054, createdTime=Tue Jun 07 02:16:00 CST 2016, time=2016-06-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88762, encodeId=1cfa88e62b9, content=这个不错啊, beContent=null, objectType=article, channel=null, level=null, likeNumber=114, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7cde98330, createdName=milkshark, createdTime=Mon Jun 06 07:01:00 CST 2016, time=2016-06-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88763, encodeId=9bc488e63c2, content=值得细读, beContent=null, objectType=article, channel=null, level=null, likeNumber=138, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7cde98330, createdName=milkshark, createdTime=Mon Jun 06 07:01:00 CST 2016, time=2016-06-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88602, encodeId=acf18860211, content=不错的文章,多学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=141, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=53751677671, createdName=沉心多思, createdTime=Sun Jun 05 21:04:00 CST 2016, time=2016-06-05, status=1, ipAttribution=)]
    2016-06-06 milkshark

    值得细读

    0

  7. [GetPortalCommentsPageByObjectIdResponse(id=1751814, encodeId=06141e518148e, content=<a href='/topic/show?id=9b6a12e0155' target=_blank style='color:#2F92EE;'>#Neuron#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12701, encryptionId=9b6a12e0155, topicName=Neuron)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c9c736410065, createdName=by2021, createdTime=Thu Dec 01 09:16:00 CST 2016, time=2016-12-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1982920, encodeId=e224198292008, content=<a href='/topic/show?id=a7a7e359478' target=_blank style='color:#2F92EE;'>#硬化症#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=85, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73594, encryptionId=a7a7e359478, topicName=硬化症)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a691420, createdName=30397604, createdTime=Sat Nov 26 03:16:00 CST 2016, time=2016-11-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1889672, encodeId=3b0518896e228, content=<a href='/topic/show?id=760c430895a' target=_blank style='color:#2F92EE;'>#多发性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=43089, encryptionId=760c430895a, topicName=多发性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=04d6114, createdName=jml2009, createdTime=Wed Sep 14 16:16:00 CST 2016, time=2016-09-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1548843, encodeId=5e6215488431f, content=<a href='/topic/show?id=f7879600061' target=_blank style='color:#2F92EE;'>#重磅#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=96000, encryptionId=f7879600061, topicName=重磅)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=3acc14121561, createdName=xxxx1054, createdTime=Tue Jun 07 02:16:00 CST 2016, time=2016-06-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88762, encodeId=1cfa88e62b9, content=这个不错啊, beContent=null, objectType=article, channel=null, level=null, likeNumber=114, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7cde98330, createdName=milkshark, createdTime=Mon Jun 06 07:01:00 CST 2016, time=2016-06-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88763, encodeId=9bc488e63c2, content=值得细读, beContent=null, objectType=article, channel=null, level=null, likeNumber=138, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7cde98330, createdName=milkshark, createdTime=Mon Jun 06 07:01:00 CST 2016, time=2016-06-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=88602, encodeId=acf18860211, content=不错的文章,多学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=141, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=53751677671, createdName=沉心多思, createdTime=Sun Jun 05 21:04:00 CST 2016, time=2016-06-05, status=1, ipAttribution=)]
    2016-06-05 沉心多思

    不错的文章,多学习

    0

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