Baidu
map

Dev Cell:Botch在神经元形成中发挥重要调节作用

2012-05-24 Beyond 生物谷

近日,约翰霍普金斯大学科学家们已经发现了一种蛋白质,这一蛋白质似乎在决定是否干细胞分化成组成大脑以及无数的其他组织的细胞发挥重要的调节作用。这一发现发表在4月的Developmental Cell杂志上,可能揭示发育障碍以及各种涉及到成年人新神经细胞的生成包括抑郁症、中风和创伤后应激障碍等疾病。 研究人员早就知道,蛋白质Notch在帮助胚胎发育中未成熟的细胞发展到整个机体包括大脑、血液、肾脏和肌

近日,约翰霍普金斯大学科学家们已经发现了一种蛋白质,这一蛋白质似乎在决定是否干细胞分化成组成大脑以及无数的其他组织的细胞发挥重要的调节作用。这一发现发表在4月的Developmental Cell杂志上,可能揭示发育障碍以及各种涉及到成年人新神经细胞的生成包括抑郁症、中风和创伤后应激障碍等疾病。

研究人员早就知道,蛋白质Notch在帮助胚胎发育中未成熟的细胞发展到整个机体包括大脑、血液、肾脏和肌肉细胞中起着举足轻重的作用。

该研究的主要领导者,约翰霍普金斯大学医学院细胞工程研究所神经科学部门的教授Valina Dawson博士表示:Notch信号参与组织发育的几乎所有方面。。

不过,她说即使研究人员一直研究了几十年的Notch,但这种蛋白质在体内的是如何调控这样一个多样化的组织和器官仍是未知的。Dawson补充说,Notch信号似乎涉及各种癌症、阿尔茨海默氏症、中风和许多其他健康问题。

要确定这一蛋白质在细胞中的作用,Dawson博士后研究员和同事开始试图确定Notch能结合什么其他蛋白质。在确定Botch蛋白作用后,研究人员转向研究蛋白质如何发挥其影响力的背后机制。一系列的实验表明,高尔基体中Botch与Notch相互作用。

研究人员表示了解Botch蛋白质在神经元形成中的作用后能够帮助开发治疗抑郁症和其他疾病的药物。(生物谷:Bioon.com)

doi:10.1016/j.devcel.2012.02.011
PMC:
PMID:

BotchPromotesNeurogenesis by AntagonizingNotch

Zhikai Chi1,Jianmin Zhang,Akinori Tokunaga,Maged M. Harraz,Sean T. Byrne,Andrew Dolinko,et al.

Regulation of self-renewal and differentiation of neural stem cells is still poorly understood. Here we investigate the role of a developmentally expressed protein, Botch, which blocks Notch, in neocortical development. Downregulation of Botch in vivo leads to cellular retention in the ventricular and subventricular zones, whereas overexpression of Botch drives neural stem cells into the intermediate zone and cortical plate. In vitro neurosphere and differentiation assays indicate that Botch regulates neurogenesis by promoting neuronal differentiation. Botch prevents cell surface presentation of Notch by inhibiting the S1 furin-like cleavage of Notch, maintaining Notch in the immature full-length form. Understanding the function of Botch expands our knowledge regarding both the regulation of Notch signaling and the complex signaling mediating neuronal development.

版权声明:
本网站所有内容来源注明为“梅斯医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于梅斯医学所有。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“梅斯医学”。其它来源的文章系转载文章,或“梅斯号”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我们联系,我们将立即进行删除处理。
在此留言
评论区 (4)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1958749, encodeId=77841958e49fd, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, 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=Sat Jun 23 09:18:00 CST 2012, time=2012-06-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1868518, encodeId=3a5a186851853, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Sun Jul 29 01:18:00 CST 2012, time=2012-07-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1982189, encodeId=ad2f1982189a5, content=<a href='/topic/show?id=13b658e849' target=_blank style='color:#2F92EE;'>#Dev#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5878, encryptionId=13b658e849, topicName=Dev)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=bcaa382, createdName=fzwish20000, createdTime=Fri Jan 25 21:18:00 CST 2013, time=2013-01-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1487428, encodeId=f1ea148e4286a, content=<a href='/topic/show?id=ba951352387' target=_blank style='color:#2F92EE;'>#OTC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13523, encryptionId=ba951352387, topicName=OTC)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b36f8313624, createdName=ymljack, createdTime=Sat May 26 09:18:00 CST 2012, time=2012-05-26, status=1, ipAttribution=)]
    2012-06-23 维他命
  2. [GetPortalCommentsPageByObjectIdResponse(id=1958749, encodeId=77841958e49fd, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, 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=Sat Jun 23 09:18:00 CST 2012, time=2012-06-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1868518, encodeId=3a5a186851853, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Sun Jul 29 01:18:00 CST 2012, time=2012-07-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1982189, encodeId=ad2f1982189a5, content=<a href='/topic/show?id=13b658e849' target=_blank style='color:#2F92EE;'>#Dev#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5878, encryptionId=13b658e849, topicName=Dev)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=bcaa382, createdName=fzwish20000, createdTime=Fri Jan 25 21:18:00 CST 2013, time=2013-01-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1487428, encodeId=f1ea148e4286a, content=<a href='/topic/show?id=ba951352387' target=_blank style='color:#2F92EE;'>#OTC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13523, encryptionId=ba951352387, topicName=OTC)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b36f8313624, createdName=ymljack, createdTime=Sat May 26 09:18:00 CST 2012, time=2012-05-26, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1958749, encodeId=77841958e49fd, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, 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=Sat Jun 23 09:18:00 CST 2012, time=2012-06-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1868518, encodeId=3a5a186851853, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Sun Jul 29 01:18:00 CST 2012, time=2012-07-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1982189, encodeId=ad2f1982189a5, content=<a href='/topic/show?id=13b658e849' target=_blank style='color:#2F92EE;'>#Dev#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5878, encryptionId=13b658e849, topicName=Dev)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=bcaa382, createdName=fzwish20000, createdTime=Fri Jan 25 21:18:00 CST 2013, time=2013-01-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1487428, encodeId=f1ea148e4286a, content=<a href='/topic/show?id=ba951352387' target=_blank style='color:#2F92EE;'>#OTC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13523, encryptionId=ba951352387, topicName=OTC)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b36f8313624, createdName=ymljack, createdTime=Sat May 26 09:18:00 CST 2012, time=2012-05-26, status=1, ipAttribution=)]
    2013-01-25 fzwish20000
  4. [GetPortalCommentsPageByObjectIdResponse(id=1958749, encodeId=77841958e49fd, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, 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=Sat Jun 23 09:18:00 CST 2012, time=2012-06-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1868518, encodeId=3a5a186851853, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Sun Jul 29 01:18:00 CST 2012, time=2012-07-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1982189, encodeId=ad2f1982189a5, content=<a href='/topic/show?id=13b658e849' target=_blank style='color:#2F92EE;'>#Dev#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5878, encryptionId=13b658e849, topicName=Dev)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=bcaa382, createdName=fzwish20000, createdTime=Fri Jan 25 21:18:00 CST 2013, time=2013-01-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1487428, encodeId=f1ea148e4286a, content=<a href='/topic/show?id=ba951352387' target=_blank style='color:#2F92EE;'>#OTC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13523, encryptionId=ba951352387, topicName=OTC)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b36f8313624, createdName=ymljack, createdTime=Sat May 26 09:18:00 CST 2012, time=2012-05-26, status=1, ipAttribution=)]
    2012-05-26 ymljack

相关资讯

Nat Neurosci:相似冲动行为牵涉不同大脑区域

近日,国际著名杂志《自然—神经科学》Nature Neuroscience在线刊登的一项报告中指出,相似冲动行为牵涉不同大脑区域。虽然注意力缺失过动症(ADHD)和药物滥用都一直被认为和冲动行为有关,但未成年人的ADHD和药物滥用却分别牵涉到不同的大脑网络。 Robert Whelan等人使用功能性磁共振成像对近2000名未成年人的大脑活动进行追踪,监控他们在突然接收到“停止”指令时,大脑是如何

PLoS Bio:舒友生等发现癫痫条件下长时程抑制性信号的增强

图注:图中背景为药物难治性癫痫患者(伴胶质瘤,颞叶亮白色部位)的脑冠状面MRI图片。白色曲线为FS神经元的膜电位变化,一串动作电位后伴随有自发突触后电位(由非同步化GABA释放引起)。图中卡通显示:与非癫痫(Non-Epileptic)组织相比,癫痫(Epileptic)组织中FS神经元的传出突触上非同步化释放增加。 5月8日,国际著名杂志PLoS Biology在线发表了上海生科院神经所研究人

J. Neurosci. :揭秘微扫视触发的漩涡视觉错觉

一项新研究揭开了“旋转蛇”(Rotating Snakes)视觉错觉如何欺骗大脑的奥秘。 Credit: Akiyoshi Kitaoka 早前有研究表明,这种漩涡运动错觉是由眼睛慢慢飘离中央目标物所引发的。但凤凰城巴罗神经学研究所( Barrow Neurological Institute in Phoenix)的视觉神经科学家通过跟踪8位志愿者的眼球运动,得出了一个完全不同的解释。

Nature:禹永春等脑神经环路发育研究获重要进展

日前,复旦大学神经生物学研究所禹永春课题组与美国纽约斯隆凯特琳癌症研究中心时松海课题组合作,在脑神经环路发育研究中,首次发现脑神经元间由电突触介导的信息交流在大脑皮层神经环路发育中有重要作用,相关研究成果于5月3日在线发表在国际期刊《自然》(Nature)杂志上。 电突触被普遍认为在神经元相互信息交流中具有重要作用。研究表明,在哺乳动物大脑皮层发育早期兴奋性神经元之间,存在着大量的电突触。然而,

Nat Rev Neurosci:X标记的胞吐点 预示囊泡融合模式

越来越多的证据表明,海马中的快速刺激性突触在突触传导期间使用了胞外分泌的两种模式:全衰竭的融合(FCF),以及一种不完全的囊泡融合形式,被称为“吻与跑”(K&R)。Park等人如今指出,一个囊泡在融合之前在激活区度过的时间,以及融合影响的位点无论囊泡是否经历了FCF或K&R。 囊泡动力学以及K&R胞外分泌的存在一直颇受争议,这部分是由于很难实时以及高分辨率地确定突触囊泡的

PNAS:说两种语言或可引起大脑变化

在语言形成过程中,大脑会发出信号,可以观察到能说两种语言的人,与语言和认知处理有关的大脑活动可能会发生变化。 近日,刊登在《美国科学院院刊》(PNAS)的研究报告指出,与只能讲一种语言的人相比,能说两种语言的人的大脑皮层区域会产生功能性和结构性变化,这可能来源于其对语言的加工和执行。科研人员已经确定了会讲两种语言可能带来与语言和认知处理有关的大脑活动的变化。 正如玩戏法的人的大脑其与储存和处理

Baidu
map
Baidu
map
Baidu
map