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日用iPS细胞培育出癌症干细胞

2012-04-20 蓝建中 新华社

诱导多功能干细胞(iPS细胞)能发育成各种组织和脏器,但医学家担心它们发生癌变。日本研究人员13日报告说,他们用小鼠iPS细胞培育出了癌症干细胞,并确认其发展成癌细胞的过程,这将有助于提高iPS细胞的安全性。   日本冈山大学教授妹尾昌治领导的研究小组13日在美国在线科学刊物《PLoS综合》上报告说,他们首先用小鼠细胞培育出iPS细胞,然后向培养液中添加曾培育过肺癌、皮肤

诱导多功能干细胞(iPS细胞)能发育成各种组织和脏器,但医学家担心它们发生癌变。日本研究人员13日报告说,他们用小鼠iPS细胞培育出了癌症干细胞,并确认其发展成癌细胞的过程,这将有助于提高iPS细胞的安全性。
 
日本冈山大学教授妹尾昌治领导的研究小组13日在美国在线科学刊物《PLoS综合》上报告说,他们首先用小鼠细胞培育出iPS细胞,然后向培养液中添加曾培育过肺癌、皮肤癌等癌细胞的液体,4周后将其中未分化的iPS细胞移植到小鼠皮下。结果,小鼠全部患上了癌症,其部分癌细胞不断分化,还有一些癌细胞向肺转移,研究小组由此确认未分化的上述iPS细胞就是癌症干细胞。
 
研究人员同时发现,在普通培养液中用常规方法培育的iPS细胞,移植后不会癌变,但如果与癌细胞一起培养,多数iPS细胞会死亡。妹尾昌治指出,少数iPS细胞癌变也许是受到癌细胞碎片或者其排出的分泌物影响。
 
研究小组认为,如果能更深入地了解iPS细胞癌变过程及其发展成的癌细胞特点,将有助于预防和治疗癌症。由于癌症干细胞在肿瘤细胞中所占比例只有百分之几,采集非常困难,利用iPS细胞培养成的癌症干细胞可供制药企业开发新药。
 
更多阅读
 
PLoS综合》发表论文摘要(英文)


    

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  2. [GetPortalCommentsPageByObjectIdResponse(id=1332974, encodeId=56d113329e4ef, content=<a href='/topic/show?id=2ab5e13481f' target=_blank style='color:#2F92EE;'>#癌症干细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71348, encryptionId=2ab5e13481f, topicName=癌症干细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=bf1d2500084, createdName=1249884fm87暂无昵称, createdTime=Sun Apr 22 10:12:00 CST 2012, time=2012-04-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1377689, encodeId=834913e7689ce, content=<a href='/topic/show?id=17b810004ce' target=_blank style='color:#2F92EE;'>#iPS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10004, encryptionId=17b810004ce, topicName=iPS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=69cb413, createdName=chengjn, createdTime=Sun Apr 22 10:12:00 CST 2012, time=2012-04-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1527099, encodeId=ac3d152e09913, content=<a href='/topic/show?id=24d610019a8' target=_blank style='color:#2F92EE;'>#iPS细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=93, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10019, encryptionId=24d610019a8, topicName=iPS细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a27a11802753, createdName=wmr115, createdTime=Sun Apr 22 10:12:00 CST 2012, time=2012-04-22, status=1, ipAttribution=)]
    2012-04-22 chengjn
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    2012-04-22 wmr115
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