Clin Cancer Res:谢丹团队发现食管癌恶性进展的新分子通路

2017-04-29 佚名 华南肿瘤学国家重点实验室

食管癌是我国最常见的头颈部恶性肿瘤之一,手术联合放化疗是该肿瘤的主要治疗模式。临床上,由于食管癌极高的复发和转移率,导致该疾病的预后较差。因此,深入探讨食管癌复发转移的生物学机制,寻找有效预测疾病复发和转移的分子指标,将显着提高食管癌患者的治疗效果和预后。日前,由谢丹教授团队联合中山大学附属第一医院叶升教授团队,在前期发现新癌基因PITX2 促进食管癌放化疗抵抗和不良预后的基础上,对 PITX2

食管癌是我国最常见的头颈部恶性肿瘤之一,手术联合放化疗是该肿瘤的主要治疗模式。临床上,由于食管癌极高的复发和转移率,导致该疾病的预后较差。因此,深入探讨食管癌复发转移的生物学机制,寻找有效预测疾病复发和转移的分子指标,将显着提高食管癌患者的治疗效果和预后。

日前,由谢丹教授团队联合中山大学附属第一医院叶升教授团队,在前期发现新癌基因PITX2 促进食管癌放化疗抵抗和不良预后的基础上,对 PITX2 在食管癌中过度表达及其促癌作用的分子机制进行了深入探讨。相关成果发表于最新一期的 Clinical Cancer Research (2017 Jan 1;23(1):298-310) 上。 该研究首先利用 miRNA 芯片技术结合生物信息学分析,结合一系列的体内外实验,发现并确证 miR-644a 是食管癌中负性调控PITX2 表达的关键因子,而且 miR-644a 低表达的食管癌患者更高频地出现肿瘤复发和转移。课题组进一步的研究揭示:食管癌中 miR-644a 低表达所致的 PITX2 表达上调,可通过激活 Akt/GSK-3β/β-catenin 信号通路,诱导食管癌的肿瘤细胞干性并促进肿瘤侵袭和转移,同时产生肿瘤放化疗抵抗。并在相关实验中证实, miR-644a 启动子的高甲基化是导致其在食管癌中表达下调的主要原因。

课题组的该项研究结果首次揭示了 miR-644a/PITX2/Akt/GSK-3β/β-catenin信号在食管癌复发和转移及其放化疗抵抗中的关键作用,为食管癌的临床预后评估和靶向治疗提供了新的思路和分子靶点。

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    2017-05-09 jyzxjiangqin

    食管癌恶性进展的新分子通路。

    0

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    2017-05-01 doctorJiangchao

    继续学习。

    0

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    2017-05-01 zhouqu_8
  5. [GetPortalCommentsPageByObjectIdResponse(id=1923243, encodeId=b8091923243f0, content=<a href='/topic/show?id=b30358095ea' target=_blank style='color:#2F92EE;'>#新分子#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58095, encryptionId=b30358095ea, topicName=新分子)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b78f2500065, createdName=12498761m56暂无昵称, createdTime=Wed Jul 26 17:07:00 CST 2017, time=2017-07-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=195675, encodeId=93b61956e5a6, content=食管癌恶性进展的新分子通路。, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160806/IMG57A5698BDB0244113.jpg, createdBy=32a91358059, createdName=jyzxjiangqin, createdTime=Tue May 09 07:10:13 CST 2017, time=2017-05-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=192392, encodeId=ba6d192392ee, content=继续学习。 , beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzfPkmqRTH5rHib5mcib8Wb3QdXjhfOK1UubQL2lictjJFdFJ6Lc3cnnCOSWqxXZ4Kk6y5GdzDoy764R/0, createdBy=156e1644785, createdName=doctorJiangchao, createdTime=Mon May 01 07:14:40 CST 2017, time=2017-05-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1437194, encodeId=6b41143e19434, content=<a href='/topic/show?id=0e311010591a' target=_blank style='color:#2F92EE;'>#食管#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101059, encryptionId=0e311010591a, topicName=食管)], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyheQLjPSX3OUs5GmkyBlcCOwTPIeq3why9NGibxxUqYo6hcx8qZLHZFgNPnBK1yzWeOFpyg2OnWOt0/0, createdBy=fa4716, createdName=zhouqu_8, createdTime=Mon May 01 07:07:00 CST 2017, time=2017-05-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=192120, encodeId=29ae1921203e, content=学习了,谢谢分享。, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/DYAIOgq83eotHc7cjrVcIHD9L2n3LzcQo1WSYledtExBOM76QRXV0FrtWOsoLNA9xaJmBjsBFwPvC7fNarGfAg/132, createdBy=531e1939570, createdName=一个尘埃, createdTime=Sun Apr 30 10:37:26 CST 2017, time=2017-04-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=191953, encodeId=5c081919538c, content=不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3xjZ9qh3bhXrJtUlmycKGfQKPuADVZQsdNAQj5IrHHlzbGsDwScictBgogYRk8KhicpgEKwTEfOHgqw/0, createdBy=bc931611963, createdName=jin321, createdTime=Sun Apr 30 00:06:28 CST 2017, time=2017-04-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=191860, encodeId=a0cd19186067, content=期待!, beContent=null, objectType=article, channel=null, level=null, likeNumber=74, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=18741984753, createdName=smartxiuxiu, createdTime=Sat Apr 29 16:26:52 CST 2017, time=2017-04-29, status=1, ipAttribution=)]
    2017-04-30 一个尘埃

    学习了,谢谢分享。

    0

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    2017-04-30 jin321

    不错

    0

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    2017-04-29 smartxiuxiu

    期待!

    0

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