Cell Reports:遏制恶性脑瘤的关键酶

2018-05-15 佚名 生物探索

5月8日,发表在Cell子刊《Cell Reports》上的一篇最新研究揭示,抑制一种关键酶CDK5,有望有效遏制恶性脑瘤的发展和复发。

胶质母细胞瘤(GBM)是一种恶性脑瘤,中位生存期不超过18个月,其常规的治疗手段效果有限,且复发风险高。现在,由美国西北大学的科学家们完成的这一最新研究有望改变GBM的高复发风险。

胶质母细胞瘤之所以复发率高,部分原因与胶质瘤干细胞有关。文章一作、病理学研究助理教授Subhas Mukherjee一直围绕胶质瘤干细胞进行相关研究。在最新的发现中,他和团队以果蝇为模型,进行与脑瘤相关的基因筛选。

CDK5

CDK5(细胞周期素依赖蛋白激酶5)负责调控蛋白质功能。先前已有研究表明,CDK5与神经性衰退疾病(包括阿尔兹海默症)有关,但是它与胶质母细胞瘤的关联未曾被深入解析。

在这项新研究中,Subhas Mukherjee团队发现,当沉默编码CDK5的基因后,果蝇的肿瘤缩小了,且肿瘤干细胞数量也降低。与此同时,他们发现很多胶质母细胞瘤患者体内CDK5酶的表达量水平相对较高。

Mukherjee表示:“CDK5会促进细胞维持高水平的干细胞特性,确保它们增殖、扩散。”

抑制剂

随着对CDK5在脑瘤中作用的解析,研究者们将一种在研的CDK5抑制剂加入人类胶质母细胞瘤细胞中。结果显示,CDK5抑制剂会阻止肿瘤的生长,抑制肿瘤干细胞的自我更新能力。

此外,他们发现,胶质母细胞瘤的3个亚型中只有两种CDK5的表达量相对较高。这意味着,第三种胶质母细胞瘤亚型可能无法受益于这一治疗方案。

目前,他们正与西北大学的分子创新和药物研究中心合作,致力于研发靶向CDK5的抑制剂。“我们希望,能够几个月内完成一些模型的构建并进行相关测试。” Mukherjee介绍道。

初步数据显示,CDX5是肿瘤复发的关键,所以CDK5抑制剂可能在两种途径上发挥作用——阻止肿瘤生长并阻止它们复发(消灭残余的癌细胞和胶质瘤干细胞)。Mukherjee预测,未来这一抑制剂有望与化疗药物联合作为一线治疗方案。

原始出处:

Subhas Mukherjee, Carol Tucker-Burden, Emily Kaissi, et al. CDK5 Inhibition Resolves PKA/cAMP-Independent Activation of CREB1 Signaling in Glioma Stem Cells. Cell Reports, 2018.

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=1960902, encodeId=ab071960902fe, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, 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=Fri Dec 21 17:55:00 CST 2018, time=2018-12-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2055908, encodeId=10442055908bb, content=<a href='/topic/show?id=a8e1529484f' target=_blank style='color:#2F92EE;'>#恶性脑瘤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=52948, encryptionId=a8e1529484f, topicName=恶性脑瘤)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cbf451, createdName=陈吴1234, createdTime=Thu Jun 07 12:55:00 CST 2018, time=2018-06-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1870633, encodeId=14aa18e06339e, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Tue Oct 23 00:55:00 CST 2018, time=2018-10-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1275701, encodeId=a4ba12e570138, content=<a href='/topic/show?id=aad38494640' target=_blank style='color:#2F92EE;'>#脑瘤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84946, encryptionId=aad38494640, topicName=脑瘤)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=373a131, createdName=jxrzshh, createdTime=Thu May 17 02:55:00 CST 2018, time=2018-05-17, status=1, ipAttribution=)]
    2018-12-21 维他命
  2. [GetPortalCommentsPageByObjectIdResponse(id=1960902, encodeId=ab071960902fe, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, 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=Fri Dec 21 17:55:00 CST 2018, time=2018-12-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2055908, encodeId=10442055908bb, content=<a href='/topic/show?id=a8e1529484f' target=_blank style='color:#2F92EE;'>#恶性脑瘤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=52948, encryptionId=a8e1529484f, topicName=恶性脑瘤)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cbf451, createdName=陈吴1234, createdTime=Thu Jun 07 12:55:00 CST 2018, time=2018-06-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1870633, encodeId=14aa18e06339e, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Tue Oct 23 00:55:00 CST 2018, time=2018-10-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1275701, encodeId=a4ba12e570138, content=<a href='/topic/show?id=aad38494640' target=_blank style='color:#2F92EE;'>#脑瘤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84946, encryptionId=aad38494640, topicName=脑瘤)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=373a131, createdName=jxrzshh, createdTime=Thu May 17 02:55:00 CST 2018, time=2018-05-17, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1960902, encodeId=ab071960902fe, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, 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=Fri Dec 21 17:55:00 CST 2018, time=2018-12-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2055908, encodeId=10442055908bb, content=<a href='/topic/show?id=a8e1529484f' target=_blank style='color:#2F92EE;'>#恶性脑瘤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=52948, encryptionId=a8e1529484f, topicName=恶性脑瘤)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cbf451, createdName=陈吴1234, createdTime=Thu Jun 07 12:55:00 CST 2018, time=2018-06-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1870633, encodeId=14aa18e06339e, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Tue Oct 23 00:55:00 CST 2018, time=2018-10-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1275701, encodeId=a4ba12e570138, content=<a href='/topic/show?id=aad38494640' target=_blank style='color:#2F92EE;'>#脑瘤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84946, encryptionId=aad38494640, topicName=脑瘤)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=373a131, createdName=jxrzshh, createdTime=Thu May 17 02:55:00 CST 2018, time=2018-05-17, status=1, ipAttribution=)]
  4. [GetPortalCommentsPageByObjectIdResponse(id=1960902, encodeId=ab071960902fe, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, 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=Fri Dec 21 17:55:00 CST 2018, time=2018-12-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2055908, encodeId=10442055908bb, content=<a href='/topic/show?id=a8e1529484f' target=_blank style='color:#2F92EE;'>#恶性脑瘤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=52948, encryptionId=a8e1529484f, topicName=恶性脑瘤)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cbf451, createdName=陈吴1234, createdTime=Thu Jun 07 12:55:00 CST 2018, time=2018-06-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1870633, encodeId=14aa18e06339e, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Tue Oct 23 00:55:00 CST 2018, time=2018-10-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1275701, encodeId=a4ba12e570138, content=<a href='/topic/show?id=aad38494640' target=_blank style='color:#2F92EE;'>#脑瘤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84946, encryptionId=aad38494640, topicName=脑瘤)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=373a131, createdName=jxrzshh, createdTime=Thu May 17 02:55:00 CST 2018, time=2018-05-17, status=1, ipAttribution=)]
    2018-05-17 jxrzshh

相关资讯

盘点:脑瘤近期重要研究进展一览

近年来,颅内肿瘤发病率呈上升趋势,颅内肿瘤约占全身肿瘤的5%,占儿童肿瘤的70%。脑癌是指生长在颅腔的新生物,又称颅内肿瘤、脑瘤,可起源于脑、脑膜、神经、血管及脑附件,或由身体的其他组织或脏器转移侵入颅内而形成,大都可产生头痛、颅内高压及局灶性症状。之前盘点过脑瘤2016重要研究进展,除了这些之外,这里梅斯小编整理了近期关于脑瘤的重要研究进展与大家分享。【1】华人学者找到脑瘤致命基因突变胶质母细胞

中美合作填补我国儿童脑瘤质子治疗空白

总部位于美国马里兰州的全球医生组织与广州润锦投资管理有限公司2月2日在北京签署合作协议,润锦投资将注资千万元与全球医生组织共同打造中美远程医学国际合作平台。

Cancer Res:寨卡病毒可杀死癌细胞治愈脑瘤

据英国《每日邮报》4 月 26 日报道,近日,巴西圣保罗大学一组研究人员经过反复试验,发现寨卡病毒可以杀死癌细胞从而治愈脑瘤。这种脑瘤会对五岁以下的儿童造成毁灭性的伤害。

Nature子刊:华人学者千里挑一,找到脑瘤致命基因突变

随着CRISPR基因编辑技术的不断成熟,越来越多奋斗在前沿的科学家们开始探索它的无限应用潜力。上周,我们报道了两则相关的新闻:张锋教授协助的一项研究使用CRISPR技术,寻找到了一个与癌症免疫疗法相关的基因;杨璐菡博士的团队则使用该技术,让猪体内的内源性病毒序列失活,解决了异种器官移植的一大难题。

Sci Transl Med:重磅疗法治疗脑瘤,研究展现曙光

在一项临床试验中,研究人员们招募了一批表达EGFRvIII,且病情出现复发的胶质母细胞瘤患者。利用这些患者体内的T细胞,研究人员开发出了CAR-T-EGFRvIII疗法,特异性地针对患者的癌细胞。

印度医生摘除全球“很大脑瘤” 重达1.8公斤

据英国广播公司(BBC)2月22日报道,印度医生已经从一名31岁男子的脑部摘除了重达1.8公斤的脑瘤。他们认为这可能是世界上最大的脑瘤。