Mol Cancer Res : 肺癌与大肠癌共享致癌基因ALK和ROS1

2013-12-25 佚名 生物谷

近日,在Molecular Cancer Research杂志的一项新研究中,科罗拉多大学癌症中心研究人员证实,已知驱动肺癌的ALK和ROS1基因重组,也存在于结直肠癌中。该结果意味着,用于靶向ALK和ROS1治疗肺癌的药物也可能对结直肠癌患者有益处。【原文下载】 Marileila Varella Garcia博士称:当你知道,癌基因已经有针对性的美国FDA批准的治疗药物,一件有意义的事情就是

近日,在Molecular Cancer Research杂志的一项新研究中,科罗拉多大学癌症中心研究人员证实,已知驱动肺癌的ALK和ROS1基因重组,也存在于结直肠癌中。该结果意味着,用于靶向ALK和ROS1治疗肺癌的药物也可能对结直肠癌患者有益处。【原文下载

Marileila Varella Garcia博士称:当你知道,癌基因已经有针对性的美国FDA批准的治疗药物,一件有意义的事情就是在其他癌症中寻找这些癌基因。多种癌症类型可能存在相同基因突变,而不用考虑癌症发生部位,研究人员认识到针对特定突变的一种治疗方法可能对共享相同突变的任何其他癌症也产生治疗效益。

在这项研究中,Garcia、Aisner和他的同事使用了荧光原位杂交(Fluorescence in situ hybridization),以测试参加澳大利亚一个大型临床试验的236例大肠癌患者样本中致癌基因ALK和ROS1的重组。研究发现其中一位病人携带ALK基因重组,并揭示了ROS1是大肠癌的致癌驱动因子,在236个肿瘤样本中2例样本发现致癌驱动因子ROS1的存在。虽然这些基因重组的大肠癌患者人数比例很小,但新研究对于这些少数患者的益处可能是巨大的,这是值得的进一步研究的。Robert C. Doebele博士说:遵循这样的原则,我们分析是否大肠癌患者也将受益于在肺癌中有效的药物。

出人意料的是,这些基因的改变往往和其他分子的改变共存于大肠癌中,ALK重组阳性肿瘤样本中也存在KRAS,ROS1的突变存在于一个携带致癌突变--BRAF基因的试验样本中。传统理论是,一个分子驱动的变化存在于整个样本中所有肿瘤细胞中,而且这些变化之间是相互排斥的。Aisner说:我们发现,某些肿瘤区域会有不同的变化,更奇怪的是,在一些区域会存在两种不同的变化。这些发现显示,你可以在一个单一的样本中找到一个以上的改变,而并不是每个单一的肿瘤细胞都必然是由同一个基因驱动的。

该团队表示,鉴定出ALK和ROS1癌基因可能会帮助开发大肠癌新的治疗选择,如酪氨酸激酶抑制剂(TKIs )药物。例如,药物Crizotinib在2011年被FDA批准治疗ALK阳性肺癌,这一药物或其他正在开发用于治疗ALK +和ROS1 +癌症可能对大肠癌也有类似的好处。

原文出处

Aisner DL, Nguyen TT, Paskulin DD, Le AT, Haney J, Schulte N, Chionh F, Hardingham J, Mariadason J, Tebbutt N, Doebele RC, Weickhardt AJ, Varella-Garcia M.ROS1 and ALK Fusions in Colorectal Cancer, with Evidence of Intra-tumoral Heterogeneity for Molecular Drivers.Mol Cancer Res. 2013 Dec 2.【原文下载

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    2013-12-27 lsndxfj
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    2013-12-27 jambiya
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    2013-12-27 wwzzly
  6. [GetPortalCommentsPageByObjectIdResponse(id=1363928, encodeId=14a2136392837, content=<a href='/topic/show?id=7c5615628ad' target=_blank style='color:#2F92EE;'>#ROS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15628, encryptionId=7c5615628ad, topicName=ROS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=acc3210, createdName=lsndxfj, createdTime=Fri Dec 27 01:44:00 CST 2013, time=2013-12-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1370793, encodeId=775513e0793db, content=<a href='/topic/show?id=9c39864991e' target=_blank style='color:#2F92EE;'>#致癌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=86499, encryptionId=9c39864991e, topicName=致癌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2c25323, createdName=jambiya, createdTime=Fri Dec 27 01:44:00 CST 2013, time=2013-12-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1373844, encodeId=f46313e3844b7, content=<a href='/topic/show?id=3644e1286f1' target=_blank style='color:#2F92EE;'>#癌基因#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71286, encryptionId=3644e1286f1, topicName=癌基因)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ee7b365, createdName=zhucaizhong7766, createdTime=Fri Dec 27 01:44:00 CST 2013, time=2013-12-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1485547, encodeId=a92d148554e46, content=<a href='/topic/show?id=798c8650647' target=_blank style='color:#2F92EE;'>#致癌基因#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=86506, encryptionId=798c8650647, topicName=致癌基因)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b4958003576, createdName=12498dd9m13暂无昵称, createdTime=Fri Dec 27 01:44:00 CST 2013, time=2013-12-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1533944, encodeId=8c8b153394405, content=<a href='/topic/show?id=0717156309a' target=_blank style='color:#2F92EE;'>#ROS1#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15630, encryptionId=0717156309a, topicName=ROS1)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=2f0712501452, createdName=wwzzly, createdTime=Fri Dec 27 01:44:00 CST 2013, time=2013-12-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1591242, encodeId=22fe15912427b, content=<a href='/topic/show?id=436d299e33d' target=_blank style='color:#2F92EE;'>#共享#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=29973, encryptionId=436d299e33d, topicName=共享)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ec1e17938205, createdName=chendoc248, createdTime=Fri Dec 27 01:44:00 CST 2013, time=2013-12-27, status=1, ipAttribution=)]
    2013-12-27 chendoc248

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