Baidu
map

Cancer Cell:变节蛋白或可调节乳腺癌细胞对药物的敏感性

2015-10-15 佚名 生物谷

图片来源:medicalxpress.com 近日,来自宾夕法尼亚大学的研究人员在一项发表在国际杂志Cancer Cell上的研究论文中指出,肿瘤抑制分子和癌基因之间看似矛盾的关系或是帮助解释乳腺癌细胞对常见抗癌药物脱敏的关键,名为拉帕替尼(Lapatinib)的药物可以激活HER2+乳腺癌细胞中名为FOXO的抑制子,但随后FOXO就会变成变节分子,同控制基因表达的表观遗传调节子进行合作;因

图片来源:medicalxpress.com

近日,来自宾夕法尼亚大学的研究人员在一项发表在国际杂志Cancer Cell上的研究论文中指出,肿瘤抑制分子和癌基因之间看似矛盾的关系或是帮助解释乳腺癌细胞对常见抗癌药物脱敏的关键,名为拉帕替尼(Lapatinib)的药物可以激活HER2+乳腺癌细胞中名为FOXO的抑制子,但随后FOXO就会变成变节分子,同控制基因表达的表观遗传调节子进行合作;因此药物触发的关系可以诱导癌基因c-Myc表达,从而降低啊细胞对癌症药物的敏感性,进而导致癌症复发。

研究者Xianxin Hua博士指出,我们发现表观遗传通路对HER2+细胞的生长非常重要,而且表观遗传因子可以降低癌细胞对拉帕替尼(HER2抑制子)的敏感性,因此我们需要去研究来揭示机体如何对拉帕替尼产生反应,以及为何癌症会复发,这对于后期设计新型工具来抑制癌症复发提供了一定帮助。

人表皮生长因子受体2(HER2)在多种乳腺癌中都处于上调状态,而HER2通路在很多癌症中都处于突变的状态,其会驱动癌症发生,但抑制该通路的抑制子,比如拉帕替尼的功效非常有限,因为癌细胞可以非常快速地适应药物的作用。FOXO在正常情况下被认为是一种友好的分子,其可以帮助控制癌细胞生长,与此同时人们认为c-Myc是一种坏家伙,然而FOXO会变成一种使得癌细胞对癌症药物不敏感的制剂,因此“好家伙”在癌症药物治疗期间就会变成“坏家伙”。

研究者表示,如今我们知道FOXO、c-Myc以及表观遗传通路之间存在一种三角关系,我们可以利用表观抑制子来阻断c-Myc的功能;多种表观遗传调节子会参与药物的脱敏途径,因此其或许可以作为一种新型靶点来帮助开发治疗癌症的新方法。

本文研究揭开了两种对抗分子:FOXO和c-Myc之间的适应性途径,两者之间的关系或许可以通过表观遗传化合物来进行控制,而揭开复合物之间的相互作用或可帮助研究者开发抑制HER2乳腺癌的新方法。

原文出处:

Smita Matkar, Paras Sharma,An Epigenetic Pathway Regulates Sensitivity of Breast Cancer Cells to HER2 Inhibition via FOXO/c-Myc Axis.Cancer Cell.2015

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 (5)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1959483, encodeId=67f4195948312, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智智灵药, createdTime=Thu Oct 29 08:06:00 CST 2015, time=2015-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1869227, encodeId=bd53186922e0a, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Jul 04 06:06:00 CST 2016, time=2016-07-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1780661, encodeId=28391e8066144, content=<a href='/topic/show?id=517a4016ac' target=_blank style='color:#2F92EE;'>#cancer cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4016, encryptionId=517a4016ac, topicName=cancer cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=96f62500201, createdName=12498e67m28暂无昵称, createdTime=Wed Nov 25 18:06:00 CST 2015, time=2015-11-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1252050, encodeId=fce412520502b, 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=36, 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=Sat Oct 17 00:06:00 CST 2015, time=2015-10-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1388317, encodeId=5235138831e27, content=<a href='/topic/show?id=7ef25e5346b' target=_blank style='color:#2F92EE;'>#敏感性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=57534, encryptionId=7ef25e5346b, topicName=敏感性)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJnkE6UvGFfMS41qV0RicWvVTTeLMicqibeZH5GqO4YhNicyl1Y9jFhylIUBn9ntPYy9jhk5hrfic5cRYw/132, createdBy=5f822500020, createdName=ms5236388012055669, createdTime=Sat Oct 17 00:06:00 CST 2015, time=2015-10-17, status=1, ipAttribution=)]
    2015-10-29 智智灵药
  2. [GetPortalCommentsPageByObjectIdResponse(id=1959483, encodeId=67f4195948312, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智智灵药, createdTime=Thu Oct 29 08:06:00 CST 2015, time=2015-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1869227, encodeId=bd53186922e0a, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Jul 04 06:06:00 CST 2016, time=2016-07-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1780661, encodeId=28391e8066144, content=<a href='/topic/show?id=517a4016ac' target=_blank style='color:#2F92EE;'>#cancer cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4016, encryptionId=517a4016ac, topicName=cancer cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=96f62500201, createdName=12498e67m28暂无昵称, createdTime=Wed Nov 25 18:06:00 CST 2015, time=2015-11-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1252050, encodeId=fce412520502b, 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=36, 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=Sat Oct 17 00:06:00 CST 2015, time=2015-10-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1388317, encodeId=5235138831e27, content=<a href='/topic/show?id=7ef25e5346b' target=_blank style='color:#2F92EE;'>#敏感性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=57534, encryptionId=7ef25e5346b, topicName=敏感性)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJnkE6UvGFfMS41qV0RicWvVTTeLMicqibeZH5GqO4YhNicyl1Y9jFhylIUBn9ntPYy9jhk5hrfic5cRYw/132, createdBy=5f822500020, createdName=ms5236388012055669, createdTime=Sat Oct 17 00:06:00 CST 2015, time=2015-10-17, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1959483, encodeId=67f4195948312, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智智灵药, createdTime=Thu Oct 29 08:06:00 CST 2015, time=2015-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1869227, encodeId=bd53186922e0a, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Jul 04 06:06:00 CST 2016, time=2016-07-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1780661, encodeId=28391e8066144, content=<a href='/topic/show?id=517a4016ac' target=_blank style='color:#2F92EE;'>#cancer cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4016, encryptionId=517a4016ac, topicName=cancer cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=96f62500201, createdName=12498e67m28暂无昵称, createdTime=Wed Nov 25 18:06:00 CST 2015, time=2015-11-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1252050, encodeId=fce412520502b, 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=36, 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=Sat Oct 17 00:06:00 CST 2015, time=2015-10-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1388317, encodeId=5235138831e27, content=<a href='/topic/show?id=7ef25e5346b' target=_blank style='color:#2F92EE;'>#敏感性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=57534, encryptionId=7ef25e5346b, topicName=敏感性)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJnkE6UvGFfMS41qV0RicWvVTTeLMicqibeZH5GqO4YhNicyl1Y9jFhylIUBn9ntPYy9jhk5hrfic5cRYw/132, createdBy=5f822500020, createdName=ms5236388012055669, createdTime=Sat Oct 17 00:06:00 CST 2015, time=2015-10-17, status=1, ipAttribution=)]
  4. [GetPortalCommentsPageByObjectIdResponse(id=1959483, encodeId=67f4195948312, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智智灵药, createdTime=Thu Oct 29 08:06:00 CST 2015, time=2015-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1869227, encodeId=bd53186922e0a, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Jul 04 06:06:00 CST 2016, time=2016-07-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1780661, encodeId=28391e8066144, content=<a href='/topic/show?id=517a4016ac' target=_blank style='color:#2F92EE;'>#cancer cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4016, encryptionId=517a4016ac, topicName=cancer cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=96f62500201, createdName=12498e67m28暂无昵称, createdTime=Wed Nov 25 18:06:00 CST 2015, time=2015-11-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1252050, encodeId=fce412520502b, 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=36, 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=Sat Oct 17 00:06:00 CST 2015, time=2015-10-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1388317, encodeId=5235138831e27, content=<a href='/topic/show?id=7ef25e5346b' target=_blank style='color:#2F92EE;'>#敏感性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=57534, encryptionId=7ef25e5346b, topicName=敏感性)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJnkE6UvGFfMS41qV0RicWvVTTeLMicqibeZH5GqO4YhNicyl1Y9jFhylIUBn9ntPYy9jhk5hrfic5cRYw/132, createdBy=5f822500020, createdName=ms5236388012055669, createdTime=Sat Oct 17 00:06:00 CST 2015, time=2015-10-17, status=1, ipAttribution=)]
    2015-10-17 yxch36
  5. [GetPortalCommentsPageByObjectIdResponse(id=1959483, encodeId=67f4195948312, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智智灵药, createdTime=Thu Oct 29 08:06:00 CST 2015, time=2015-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1869227, encodeId=bd53186922e0a, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Jul 04 06:06:00 CST 2016, time=2016-07-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1780661, encodeId=28391e8066144, content=<a href='/topic/show?id=517a4016ac' target=_blank style='color:#2F92EE;'>#cancer cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4016, encryptionId=517a4016ac, topicName=cancer cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=96f62500201, createdName=12498e67m28暂无昵称, createdTime=Wed Nov 25 18:06:00 CST 2015, time=2015-11-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1252050, encodeId=fce412520502b, 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=36, 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=Sat Oct 17 00:06:00 CST 2015, time=2015-10-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1388317, encodeId=5235138831e27, content=<a href='/topic/show?id=7ef25e5346b' target=_blank style='color:#2F92EE;'>#敏感性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=57534, encryptionId=7ef25e5346b, topicName=敏感性)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJnkE6UvGFfMS41qV0RicWvVTTeLMicqibeZH5GqO4YhNicyl1Y9jFhylIUBn9ntPYy9jhk5hrfic5cRYw/132, createdBy=5f822500020, createdName=ms5236388012055669, createdTime=Sat Oct 17 00:06:00 CST 2015, time=2015-10-17, status=1, ipAttribution=)]

相关资讯

BJC:CACNA2D3基因甲基化可预测乳腺癌扩散风险

在一项新研究中,给一个癌基因加上一种分子“便利贴(post-it note)”能够预测患者乳腺癌扩散的风险。 来自英国伦敦帝国学院(Imperial College London)的英国癌症研究中心研究人员证实CACNA2D3基因上高水平的被称作甲基化的分子修饰与乳腺癌患者体内这种疾病的扩散相关联。2012年7月10日,相关研究成果发表在British Journal of Cancer期刊上。

Cancer Res:肿瘤抑制基因RASSF1A的缺失或引发新癌基因的诞生

近日,国际著名杂志Cancer Research在线刊登了哈佛医学院等处研究者的最新研究成果“Loss of Rassf1a Synergizes with Deregulated Runx2 Signaling in Tumorigenesis”,文章中,研究者揭示了在肿瘤发生期间,基因RASSF1A的缺失解除了其对基因Runx2的控制作用。 在人类许多癌症疾病中,肿瘤抑制基因RASSF1A都

Baidu
map
Baidu
map
Baidu
map