[重复]Science:肿瘤细菌对化疗药物的抵抗性

2017-09-19 Flora 生物探索

微生物不仅仅与疾病的发生、发展有关,它还会影响癌症治疗的效果!最新一篇发表文章揭示:胰腺癌中存在一类特殊的细菌,这些细菌会表达一种酶,用于“消化”化疗药物,从而折损抗癌的疗效。研究团队检测了超100例胰腺癌患者,使用多种方法观察人体胰腺肿瘤内的细菌,从而排除实验室操作过程的细菌污染问题。奇妙的是,正是早期的细菌污染开启了这项研究。研究人员一直在寻找“肿瘤微环境中的正常细胞有助于抵抗化疗”的。但是,

微生物不仅仅与疾病的发生、发展有关,它还会影响癌症治疗的效果!

最新一篇发表文章揭示:胰腺癌中存在一类特殊的细菌,这些细菌会表达一种酶,用于“消化”化疗药物,从而折损抗癌的疗效。

研究团队检测了超100例胰腺癌患者,使用多种方法观察人体胰腺肿瘤内的细菌,从而排除实验室操作过程的细菌污染问题。

奇妙的是,正是早期的细菌污染开启了这项研究。研究人员一直在寻找“肿瘤微环境中的正常细胞有助于抵抗化疗”的。但是,在检测这些正常、非癌变的人类细胞针对“癌细胞对化疗敏感性”的影响时,他们发现,一个特殊的人类皮肤细胞样本会让癌细胞对吉西他滨(gemcitabine)产生抗药性。

顺着这条线继续研究下去,研究人员在这些皮肤细胞内发现了潜伏的细菌。这些细菌不仅仅存在于肿瘤组织中,甚至于出现在肿瘤细胞内部。而且,这些细菌会降解化疗药物。但是,这是为什么呢?

细菌会“消化”化疗药物,或许抗生素治疗应该跟上

他们以胰腺癌患者的肿瘤作为样本,从中分离出细菌,并检测它们影响胰腺癌细胞对化疗药物吉西那滨敏感性的细节。

他们发现,这些细菌会“消化”化疗药物,使其失效。他们找到了控制这一过程的细菌基因——胞苷脱氨酶(CDD)基因。他们证实,CDD有两种形式(一长一短)。仅仅只有携带长版CDD基因的细菌会抑制化疗药物的效果。而化疗药物对细菌却没有明显影响。

他们以患癌小鼠为模型,其中一组小鼠携带长CDD基因,而另一组小鼠该基因被敲除。结果表明,只有携带CDD基因的小鼠才会对抗癌药物表现出耐药性。而且,结合抗生素治疗之后,耐药性问题会减缓,化疗药物会再次展现出药效。


原始出处:

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=1665940, encodeId=1e481665940a3, content=<a href='/topic/show?id=6f7d553159c' target=_blank style='color:#2F92EE;'>#抗性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55315, encryptionId=6f7d553159c, topicName=抗性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智智灵药, createdTime=Tue Feb 27 16:19:00 CST 2018, time=2018-02-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1375682, encodeId=c41e13e56825f, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Thu Sep 21 07:19:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1506712, encodeId=0e921506e12c1, content=<a href='/topic/show?id=7b8d3358050' target=_blank style='color:#2F92EE;'>#化疗药物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33580, encryptionId=7b8d3358050, topicName=化疗药物)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=5f629793993, createdName=luwei03, createdTime=Thu Sep 21 07:19:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1581753, encodeId=e4c31581e5360, content=<a href='/topic/show?id=0813335e996' target=_blank style='color:#2F92EE;'>#化疗药#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33579, encryptionId=0813335e996, topicName=化疗药)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=298f16872689, createdName=12498cb5m18暂无昵称, createdTime=Thu Sep 21 07:19:00 CST 2017, time=2017-09-21, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=1665940, encodeId=1e481665940a3, content=<a href='/topic/show?id=6f7d553159c' target=_blank style='color:#2F92EE;'>#抗性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55315, encryptionId=6f7d553159c, topicName=抗性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智智灵药, createdTime=Tue Feb 27 16:19:00 CST 2018, time=2018-02-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1375682, encodeId=c41e13e56825f, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Thu Sep 21 07:19:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1506712, encodeId=0e921506e12c1, content=<a href='/topic/show?id=7b8d3358050' target=_blank style='color:#2F92EE;'>#化疗药物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33580, encryptionId=7b8d3358050, topicName=化疗药物)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=5f629793993, createdName=luwei03, createdTime=Thu Sep 21 07:19:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1581753, encodeId=e4c31581e5360, content=<a href='/topic/show?id=0813335e996' target=_blank style='color:#2F92EE;'>#化疗药#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33579, encryptionId=0813335e996, topicName=化疗药)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=298f16872689, createdName=12498cb5m18暂无昵称, createdTime=Thu Sep 21 07:19:00 CST 2017, time=2017-09-21, status=1, ipAttribution=)]
    2017-09-21 jichang
  3. [GetPortalCommentsPageByObjectIdResponse(id=1665940, encodeId=1e481665940a3, content=<a href='/topic/show?id=6f7d553159c' target=_blank style='color:#2F92EE;'>#抗性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55315, encryptionId=6f7d553159c, topicName=抗性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智智灵药, createdTime=Tue Feb 27 16:19:00 CST 2018, time=2018-02-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1375682, encodeId=c41e13e56825f, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Thu Sep 21 07:19:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1506712, encodeId=0e921506e12c1, content=<a href='/topic/show?id=7b8d3358050' target=_blank style='color:#2F92EE;'>#化疗药物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33580, encryptionId=7b8d3358050, topicName=化疗药物)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=5f629793993, createdName=luwei03, createdTime=Thu Sep 21 07:19:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1581753, encodeId=e4c31581e5360, content=<a href='/topic/show?id=0813335e996' target=_blank style='color:#2F92EE;'>#化疗药#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33579, encryptionId=0813335e996, topicName=化疗药)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=298f16872689, createdName=12498cb5m18暂无昵称, createdTime=Thu Sep 21 07:19:00 CST 2017, time=2017-09-21, status=1, ipAttribution=)]
  4. [GetPortalCommentsPageByObjectIdResponse(id=1665940, encodeId=1e481665940a3, content=<a href='/topic/show?id=6f7d553159c' target=_blank style='color:#2F92EE;'>#抗性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55315, encryptionId=6f7d553159c, topicName=抗性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智智灵药, createdTime=Tue Feb 27 16:19:00 CST 2018, time=2018-02-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1375682, encodeId=c41e13e56825f, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Thu Sep 21 07:19:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1506712, encodeId=0e921506e12c1, content=<a href='/topic/show?id=7b8d3358050' target=_blank style='color:#2F92EE;'>#化疗药物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33580, encryptionId=7b8d3358050, topicName=化疗药物)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=5f629793993, createdName=luwei03, createdTime=Thu Sep 21 07:19:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1581753, encodeId=e4c31581e5360, content=<a href='/topic/show?id=0813335e996' target=_blank style='color:#2F92EE;'>#化疗药#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33579, encryptionId=0813335e996, topicName=化疗药)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=298f16872689, createdName=12498cb5m18暂无昵称, createdTime=Thu Sep 21 07:19:00 CST 2017, time=2017-09-21, status=1, ipAttribution=)]