Baidu
map

Cell:抑制TAK1蛋白促进结肠癌细胞凋亡

2012-04-10 Beyond 生物谷

近日,美国波士顿大学医学院药理学和实验疗法部助理教授Anurag Singh博士在芝加哥召开的美国癌症研究届年会上公布了他最近有关靶向治疗结肠癌的工作进展。相关研究论文发表在Cell杂志上。 每年,有超过一百万的结肠癌病例被确诊,在全世界范围内结肠癌会造成约60万人死亡。这些病例中有一半以上发现有KRAS基因的突变。在美国,结肠癌患者的KRAS基因突变是非常常见的,但靶向KRAS基因的治疗药物临

近日,美国波士顿大学医学院药理学和实验疗法部助理教授Anurag Singh博士在芝加哥召开的美国癌症研究届年会上公布了他最近有关靶向治疗结肠癌的工作进展。相关研究论文发表在Cell杂志上。

每年,有超过一百万的结肠癌病例被确诊,在全世界范围内结肠癌会造成约60万人死亡。这些病例中有一半以上发现有KRAS基因的突变。在美国,结肠癌患者的KRAS基因突变是非常常见的,但靶向KRAS基因的治疗药物临床效益却不甚乐观。因此,KRAS基因突变的患者通常都面临非常有限的治疗选择,并且临床预后很差。

Singh和他的同事们已经确定了KRAS基因突变的结肠癌中处于过度激活的一些基因。其中包括MAP3K7或TAK1蛋白基因,这两蛋白在促进结肠癌病情恶化中起着非常关键的作用。抑制TAK1蛋白的结果是杀死KRAS基因突变的肿瘤细胞,但对正常非突变的细胞影响很小。Singh说:抗TAK1的蛋白拮抗剂可能为侵略性的KRAS基因突变的结肠癌患者提供“个性化”中医学治疗。研究人员目前正努力测试TAK1蛋白抑制剂的临床疗效。(生物谷:Bioon)

doi:10.1016/j.cell.2011.12.033
PMC:
PMID:

TAK1 Inhibition Promotes Apoptosis in KRAS-Dependent Colon Cancers

Anurag Singh, Michael F. Sweeney, Min Yu, Alexa Burger, Patricia Greninger, Cyril Benes, Daniel A. Haber, Jeff Settleman

Colon cancers frequently harbor KRAS mutations, yet only a subset of KRAS mutant colon cancer cell lines are dependent upon KRAS signaling for survival. In a screen for kinases that promote survival of KRAS-dependent colon cancer cells, we found that the TAK1 kinase (MAP3K7) is required for tumor cell viability. The induction of apoptosis by RNAi-mediated depletion or pharmacologic inhibition of TAK1 is linked to its suppression of hyperactivated Wnt signaling, evident in both endogenous and genetically reconstituted cells. In APC mutant/KRAS-dependent cells, KRAS stimulates BMP-7 secretion and BMP signaling, leading to TAK1 activation and enhancement of Wnt-dependent transcription. An in vitro-derived TAK1 dependency signature is enriched in primary human colon cancers with mutations in both APC and KRAS, suggesting potential clinical utility in stratifying patient populations. Together, these findings identify TAK1 inhibition as a potential therapeutic strategy for a treatment-refractory subset of colon cancers exhibiting aberrant KRAS and Wnt pathway activation.

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=1958696, encodeId=00a01958696b1, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=104, 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=Thu Aug 23 21:48:00 CST 2012, time=2012-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1868482, encodeId=98741868482b0, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, 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 Dec 30 07:48:00 CST 2012, time=2012-12-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1251874, encodeId=967d12518e41f, content=<a href='/topic/show?id=3efee1519b2' target=_blank style='color:#2F92EE;'>#癌细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71519, encryptionId=3efee1519b2, topicName=癌细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4cea26, createdName=yxch36, createdTime=Thu Apr 12 14:48:00 CST 2012, time=2012-04-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1340233, encodeId=d87d1340233c7, content=<a href='/topic/show?id=bd5ce780493' target=_blank style='color:#2F92EE;'>#细胞凋亡#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77804, encryptionId=bd5ce780493, topicName=细胞凋亡)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/1103841572/EFCEF19303EB52B3F41B30C45995AF2C/100, createdBy=8e712500159, createdName=ms8538335253054589, createdTime=Thu Apr 12 14:48:00 CST 2012, time=2012-04-12, status=1, ipAttribution=)]
    2012-08-23 维他命
  2. [GetPortalCommentsPageByObjectIdResponse(id=1958696, encodeId=00a01958696b1, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=104, 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=Thu Aug 23 21:48:00 CST 2012, time=2012-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1868482, encodeId=98741868482b0, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, 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 Dec 30 07:48:00 CST 2012, time=2012-12-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1251874, encodeId=967d12518e41f, content=<a href='/topic/show?id=3efee1519b2' target=_blank style='color:#2F92EE;'>#癌细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71519, encryptionId=3efee1519b2, topicName=癌细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4cea26, createdName=yxch36, createdTime=Thu Apr 12 14:48:00 CST 2012, time=2012-04-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1340233, encodeId=d87d1340233c7, content=<a href='/topic/show?id=bd5ce780493' target=_blank style='color:#2F92EE;'>#细胞凋亡#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77804, encryptionId=bd5ce780493, topicName=细胞凋亡)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/1103841572/EFCEF19303EB52B3F41B30C45995AF2C/100, createdBy=8e712500159, createdName=ms8538335253054589, createdTime=Thu Apr 12 14:48:00 CST 2012, time=2012-04-12, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1958696, encodeId=00a01958696b1, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=104, 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=Thu Aug 23 21:48:00 CST 2012, time=2012-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1868482, encodeId=98741868482b0, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, 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 Dec 30 07:48:00 CST 2012, time=2012-12-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1251874, encodeId=967d12518e41f, content=<a href='/topic/show?id=3efee1519b2' target=_blank style='color:#2F92EE;'>#癌细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71519, encryptionId=3efee1519b2, topicName=癌细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4cea26, createdName=yxch36, createdTime=Thu Apr 12 14:48:00 CST 2012, time=2012-04-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1340233, encodeId=d87d1340233c7, content=<a href='/topic/show?id=bd5ce780493' target=_blank style='color:#2F92EE;'>#细胞凋亡#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77804, encryptionId=bd5ce780493, topicName=细胞凋亡)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/1103841572/EFCEF19303EB52B3F41B30C45995AF2C/100, createdBy=8e712500159, createdName=ms8538335253054589, createdTime=Thu Apr 12 14:48:00 CST 2012, time=2012-04-12, status=1, ipAttribution=)]
    2012-04-12 yxch36
  4. [GetPortalCommentsPageByObjectIdResponse(id=1958696, encodeId=00a01958696b1, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=104, 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=Thu Aug 23 21:48:00 CST 2012, time=2012-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1868482, encodeId=98741868482b0, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, 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 Dec 30 07:48:00 CST 2012, time=2012-12-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1251874, encodeId=967d12518e41f, content=<a href='/topic/show?id=3efee1519b2' target=_blank style='color:#2F92EE;'>#癌细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71519, encryptionId=3efee1519b2, topicName=癌细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4cea26, createdName=yxch36, createdTime=Thu Apr 12 14:48:00 CST 2012, time=2012-04-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1340233, encodeId=d87d1340233c7, content=<a href='/topic/show?id=bd5ce780493' target=_blank style='color:#2F92EE;'>#细胞凋亡#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77804, encryptionId=bd5ce780493, topicName=细胞凋亡)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/1103841572/EFCEF19303EB52B3F41B30C45995AF2C/100, createdBy=8e712500159, createdName=ms8538335253054589, createdTime=Thu Apr 12 14:48:00 CST 2012, time=2012-04-12, status=1, ipAttribution=)]

相关资讯

JBC:科学家发现癌细胞抗氧化应激损伤的机制

化疗和辐射引起癌细胞氧化应激,进而杀死肿瘤细胞。南加州大学的一项新的研究表明,保护癌症和其他细胞免受应激压力的一种蛋白质有一天能够帮助医生打破癌细胞的防御能力,使得癌细胞对相应治疗更敏感。 南加州大学教授Kelvin J. A. Davies率领的研究团队完成的最新研究证实蛋白质Nrf2能增强细胞应对氧化应激的能力。相关研究论文发表在3月23日的《生物化学杂志》上。 氧化应激是指体内氧化与抗氧

PNAS:日揭示癌干细胞难以彻底消灭的原因

近日,PNAS发表了日本东京大学医学研究所研究人员的一项新研究发现,对于癌症发病和复发起到重要作用的癌干细胞,能够自己分泌其生存必需的各种蛋白质。如果能够破坏这个机制,就有望防止癌症的复发。 癌干细胞是指具有干细胞性质的癌细胞,有“自我复制”以及“多细胞分化”等能力。这类细胞被认为有形成肿瘤乃至发展成癌症的潜力。现在的癌症治疗主要是通过药物和放疗等杀死癌细胞。但是,如果有癌干细胞残留,癌细胞就会

Sci Transl Med:纳米粒携带抗癌药可有效抵御癌症发展

图中显示的是纳米粒携带抗癌药物导致癌细胞破坏崩解;蓝色为纳米粒,紫色为癌细胞(Image: Medi-mation/Science Photo Library) Copyright ®版权归生物谷所有,若未得到Bioon授权,请勿转载。 近日,国际著名杂志Science Translational Medicine在线刊登了国外研究人员最新研究成果“Preclinical Develo

AACR:药物CLR1404能够检测和治疗恶性肿瘤和某些癌干细胞

图片来自Christine E. Eyler et al. Glioma Stem Cell Proliferation and Tumor Growth Are Promoted by Nitric Oxide Synthase-2, Cell, Volume 146, Issue 1, 53-66, 8 July 2011, DOI:10.1016/j.cell.2011.06.006. C

AJHG:XRCC2基因突变增加患乳腺癌的风险

据发表在《美国人类遗传学杂志》上的一项研究表明,科学家发现了一种新的乳腺癌遗传易感性基因。据研究人员介绍,XRCC2基因突变会导致乳腺癌。乳腺癌是女性最常见的恶性肿瘤。到目前为止,除了BRCA1和BRCA2基因突变和一些罕见的综合征(如TP53突变,STK11、PTEN基因、CDH1基因、NF1基因或NBN)外,乳腺癌的家族聚集性一直得不到解释。 目前的研究表明除了BRCA基因和BRCA2基

ACS Nano:纳米颗粒能直接载药入癌细胞核

美国西北大学的科学家已经开发出一个简单的星形黄金纳米粒子可以将药物直接递送进入癌细胞的细胞核中。相关研究论文发表在ACS Nano杂志上。论文主要作者是Teri W. Odom博士。 科学家们正在越来越多地关注细胞水平上用纳米技术来对抗疾病。虽然纳米技术具有相当大的设计挑战性,但纳米技术是一种非常有前景的靶向治疗手段。 现在,西北大学研究团队首次发表报告称他们制造了一个简单的纳米粒子可以针

Baidu
map
Baidu
map
Baidu
map