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美癌症研究所彻底“检修”肿瘤细胞系

2016-02-25 徐徐 中国科学报

在被全球研究人员大量使用了25年后,美国国家癌症研究所(NCI)决定让NCI-60从其药物筛选程序中“退休”。NCI-60是指在培养基中生长的60种人类癌细胞系。今年春末,该研究所将启动一个得到更新的癌症模型库。这些模型来源于病人的新鲜样本,并且被标记上病人临床治疗的过往细节。 NCI的此项举措回应了对与病人产生更紧密联系的癌症模型的广泛需求。2月11日,癌症研究人员聚集在路易斯安那州新奥尔良,

在被全球研究人员大量使用了25年后,美国国家癌症研究所(NCI)决定让NCI-60从其药物筛选程序中“退休”。NCI-60是指在培养基中生长的60种人类癌细胞系。今年春末,该研究所将启动一个得到更新的癌症模型库。这些模型来源于病人的新鲜样本,并且被标记上病人临床治疗的过往细节。

NCI的此项举措回应了对与病人产生更紧密联系的癌症模型的广泛需求。2月11日,癌症研究人员聚集在路易斯安那州新奥尔良,参加由美国癌症研究协会举办的会议。此次会议聚焦的是来自临床样本的新癌症模型的创建。

自1990年起,业界和学术界利用NCI-60筛选出10万余种化合物,以研究癌症的分子细节并找到治疗癌症的药物。

NCI癌症治疗和诊断部门负责人James Doroshow表示,在NCI-60被建立时,研究人员对癌症有了一种完全不同的了解。“30年前的想法是,如果你发现了在6种乳腺癌细胞系中起作用的药物,那么你就能用它治疗乳腺癌。”Doroshow介绍说,“但事实不是那样。”

自此以后,乳腺癌被分拆成基于基因突变的亚分类,而每个类别可能对治疗产生不同的反应。

然而,正如很多其他癌细胞系,NCI-60已在培养基中生存了上千代。这种环境同细胞系的原生环境相差很大。随着时间的流逝,这些细胞适应了塑料培养皿的环境,并且改变了其基因构成和行为。

NCI将继续向研究人员提供NCI-60细胞系,但最终将把药物筛选重新聚焦于更新的模型。它正在研发上百个“来自病人的异种移植”(PDX)模型。这些模型通过将小块的人类肿瘤移植到小鼠体内而创建起来。在小鼠体内,肿瘤的生长环境能更好地模拟细胞系的原生环境。它们会被取出来并再次移植到其他小鼠体内,从而使科学家得以在多种动物体内研究特定肿瘤。NCI将向研究人员提供来自这些PDX的细胞,同时包括每个肿瘤基因构成和基因表达模式的数据,以及捐赠者的治疗历史。

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    2016-02-25 sillywu

    不成熟的想法就别这么大肆宣扬啊

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1801018, encodeId=70d1180101857, content=<a href='/topic/show?id=79cfe339533' target=_blank style='color:#2F92EE;'>#研究所#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73395, encryptionId=79cfe339533, topicName=研究所)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6f63175, createdName=nian.wang1982, createdTime=Sun Jun 12 02:58:00 CST 2016, time=2016-06-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1312927, encodeId=360e131292e49, content=<a href='/topic/show?id=4ce783062c7' target=_blank style='color:#2F92EE;'>#肿瘤细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=83062, encryptionId=4ce783062c7, topicName=肿瘤细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c859411, createdName=hmwwww, createdTime=Fri Feb 26 23:58:00 CST 2016, time=2016-02-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1514150, encodeId=46d415141502a, content=<a href='/topic/show?id=448ee1455a3' target=_blank style='color:#2F92EE;'>#癌症研究#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=71, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71455, encryptionId=448ee1455a3, topicName=癌症研究)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=42c410636799, createdName=小华子, createdTime=Fri Feb 26 23:58:00 CST 2016, time=2016-02-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1554000, encodeId=4de4155400003, content=<a href='/topic/show?id=7482e7994d0' target=_blank style='color:#2F92EE;'>#细胞系#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77994, encryptionId=7482e7994d0, topicName=细胞系)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6c9f14484011, createdName=zhangxingru, createdTime=Fri Feb 26 23:58:00 CST 2016, time=2016-02-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=65549, encodeId=d5db6554973, content=不成熟的想法就别这么大肆宣扬啊, beContent=null, objectType=article, channel=null, level=null, likeNumber=135, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib260FNcic8ThYZTmbW36JHpvHcnIog7VbWIQjibo1kwuH9obXRJJtqHn1hYHHLG0DpIMIBVFPhBBpQOJWDk1rbib2Y/0, createdBy=d27274268, createdName=sillywu, createdTime=Thu Feb 25 10:11:00 CST 2016, time=2016-02-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=65550, encodeId=aff56555071, content=大部分细胞系都污染了, beContent=null, objectType=article, channel=null, level=null, likeNumber=136, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=96871613250, createdName=medcardio, createdTime=Thu Feb 25 10:11:00 CST 2016, time=2016-02-25, status=1, ipAttribution=)]
    2016-02-25 medcardio

    大部分细胞系都污染了

    0

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