Cell Rep:什么物质能阻止神经细胞退化?

2019-05-28 佚名 生物通

杜克-新加坡国立大学医学院(Duke-NUS Medical School)的一项研究发现,以在基因调控中的作用而闻名的多蛋白“整合子复合体(Integrator complex)”成员,对于果蝇的大脑健康发育至关重要。这一发现对进一步理解和治疗人类神经发育障碍具有指导意义。

杜克-新加坡国立大学医学院(Duke-NUS Medical School)的一项研究发现,以在基因调控中的作用而闻名的多蛋白“整合子复合体(Integrator complex)”成员,对于果蝇的大脑健康发育至关重要。这一发现对进一步理解和治疗人类神经发育障碍具有指导意义。



人整合子基因intS1和intS8的突变与神经发育综合征有关,神经发育综合征的特征是严重的智力障碍、癫痫和轻微的脑结构异常。然而,整合子复合体在大脑发育过程中的作用还没有被很好地理解。神经科学和行为障碍项目副主任、该研究的主要作者王洪彦(Wang Hongyan)副教授说:“williamhill asia 研究了果蝇大脑中的整合子复合体成员,以了解他们在神经系统发育中的作用。”

通常,幼虫大脑中的神经干细胞分化为中间神经祖细胞,最终形成神经细胞。有几个因素被理解为可以阻止中间神经祖细胞转变为神经干细胞(这一过程被称为去分化)。王洪彦教授及其团队先前的研究表明,当发生去分化时,果蝇大脑中会形成异常的神经干细胞源性肿瘤,神经细胞的产生也变得不足。

王教授及其团队突变并关闭了果蝇大脑中的整合子复合体成员。当脑细胞中没有整合子蛋白时,就会形成异常的神经干细胞。关闭中间神经祖细胞中的几个整合子基因导致神经干细胞过度形成。他们的研究提供了证据,证明整合子蛋白有助于阻止中间神经祖细胞去分化为神经干细胞。一种叫做Earmuff的转录因子被鉴定为脑细胞中整合子复合蛋白的主要靶点,它是防止去分化所必需的。

这一发现强调了整合子蛋白复合物在阻止去分化,从而促进果蝇大脑发育中所起的关键新作用。他们还发现整合复合物蛋白可以调节Earmuff,Earmuff是一种已知的去分化抑制因子。“考虑到整合子和Earmuff在果蝇和人类中高度保守,williamhill asia 的研究将有助于理解它们在哺乳动物和人类大脑发育过程中的功能,以及了解潜在的疾病机制,”王教授说。

杜克-新加坡国立大学医学院高级副院长Patrick Casey教授评论说:“对神经发育中的整合子复合体的研究在很大程度上没有被探索过,这些发现为更好地理解和治疗神经退行性疾病提供了有价值的见解。”

版权声明:
本网站所有内容来源注明为“williamhill asia 医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于williamhill asia 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“williamhill asia 医学”。其它来源的文章系转载文章,或“williamhill asia 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williamhill asia 联系,williamhill asia 将立即进行删除处理。
在此留言
评论区 (4)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1961585, encodeId=f5eb1961585d5, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Tue Jul 02 00:47:00 CST 2019, time=2019-07-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1871302, encodeId=fa0318e13028a, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Wed Mar 25 07:47:00 CST 2020, time=2020-03-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1489561, encodeId=3b4b1489561fb, content=<a href='/topic/show?id=362fe4482f1' target=_blank style='color:#2F92EE;'>#神经细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74482, encryptionId=362fe4482f1, topicName=神经细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=81b08562535, createdName=liye789132254, createdTime=Wed May 29 15:47:00 CST 2019, time=2019-05-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=366910, encodeId=929636691084, content=学习中, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e5171668917, createdName=坚强007, createdTime=Tue May 28 08:50:34 CST 2019, time=2019-05-28, status=1, ipAttribution=)]
    2019-07-02 维他命
  2. [GetPortalCommentsPageByObjectIdResponse(id=1961585, encodeId=f5eb1961585d5, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Tue Jul 02 00:47:00 CST 2019, time=2019-07-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1871302, encodeId=fa0318e13028a, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Wed Mar 25 07:47:00 CST 2020, time=2020-03-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1489561, encodeId=3b4b1489561fb, content=<a href='/topic/show?id=362fe4482f1' target=_blank style='color:#2F92EE;'>#神经细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74482, encryptionId=362fe4482f1, topicName=神经细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=81b08562535, createdName=liye789132254, createdTime=Wed May 29 15:47:00 CST 2019, time=2019-05-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=366910, encodeId=929636691084, content=学习中, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e5171668917, createdName=坚强007, createdTime=Tue May 28 08:50:34 CST 2019, time=2019-05-28, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1961585, encodeId=f5eb1961585d5, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Tue Jul 02 00:47:00 CST 2019, time=2019-07-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1871302, encodeId=fa0318e13028a, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Wed Mar 25 07:47:00 CST 2020, time=2020-03-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1489561, encodeId=3b4b1489561fb, content=<a href='/topic/show?id=362fe4482f1' target=_blank style='color:#2F92EE;'>#神经细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74482, encryptionId=362fe4482f1, topicName=神经细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=81b08562535, createdName=liye789132254, createdTime=Wed May 29 15:47:00 CST 2019, time=2019-05-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=366910, encodeId=929636691084, content=学习中, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e5171668917, createdName=坚强007, createdTime=Tue May 28 08:50:34 CST 2019, time=2019-05-28, status=1, ipAttribution=)]
  4. [GetPortalCommentsPageByObjectIdResponse(id=1961585, encodeId=f5eb1961585d5, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Tue Jul 02 00:47:00 CST 2019, time=2019-07-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1871302, encodeId=fa0318e13028a, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Wed Mar 25 07:47:00 CST 2020, time=2020-03-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1489561, encodeId=3b4b1489561fb, content=<a href='/topic/show?id=362fe4482f1' target=_blank style='color:#2F92EE;'>#神经细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74482, encryptionId=362fe4482f1, topicName=神经细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=81b08562535, createdName=liye789132254, createdTime=Wed May 29 15:47:00 CST 2019, time=2019-05-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=366910, encodeId=929636691084, content=学习中, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e5171668917, createdName=坚强007, createdTime=Tue May 28 08:50:34 CST 2019, time=2019-05-28, status=1, ipAttribution=)]
    2019-05-28 坚强007

    学习中

    0

相关威廉亚洲官网

PNAS:吃饱了依然停不住?PNAS在大脑深处找到原因,两类神经元在“打架”

美食太诱人、吃饱了再减肥、这类食物不会胖……有时候williamhill asia 真的控制不住寄几,即便吃饱了还会继续吃吃吃。这是为什么?《PNAS》期刊给出了一份答案:大脑中促进进食的神经细胞“打赢”了阻止进食的神经细胞!

Nature Neuroscience:不断接近的阿尔兹海默真相

科学家们正在研究免疫细胞激活在阿尔茨海默病中的作用,最新Nature Neuroscience文章表明,大脑中有缺陷的免疫细胞会导致阿尔茨海默病。

第四脑室中枢神经细胞瘤1例

第四脑室中枢神经细胞瘤较为罕见。北京大学第一医院2016年6月收治1例第四脑室中枢神经细胞瘤病人,治疗效果良好,总结分析诊疗经验,现报告如下。

世界卒中日|这个病,每分钟杀死190万个神经细胞

10月29日是每年的世界卒中日,今年的主题是“战胜卒中,再立人生”。

Nat Commun:隐性听力损失能够选择性的损伤高噪音环境下的神经适应性

暴露在一个单独的高噪音环境下就能损伤而我听毛细胞和听觉神经纤维之间的突触,从而引起隐性听力损失(HHL),并且不能被听觉调查检测到。最近,有研究人员调查了噪音诱导的HHL对听力功能的影响,具体是通过在安静和噪音不同环境阶段中,听觉中脑神经细胞对不同环境的适应能力。研究人员发现,来源自接触噪音的小鼠的神经细胞表现出了对声音环境适应能力减弱情况,即在上述环境中传达了更少的声音强度信息,并且对波动声音环

Nat Neurosci:创建神经细胞?用结缔组织细胞就够了

美因兹大学(Mainz University)医学中心的研究人员在《Nature Neuroscience》杂志发表神经再生领域重要发现。