Baidu
map

Nature:日本发现大肠癌复发机理

2017-05-04 佚名 科技部

日本庆应大学医学部的研究团队采用患者身上提取的结肠癌细胞进行培养,再用干细胞特有的 LGR5 遗传因子进行荧光标识,然后移植到小鼠身上,进行治疗实验。结果发现,虽然药物可以杀死干细胞,使癌细胞停止增长,但是停止用药后,干细胞会再次出现,导致癌细胞继续扩大。这是由于从干细胞分化来的短命细胞会发生“返祖”现象,使干细胞重新复活。正常状态下的肠道中,存在着干细胞和短寿命细胞。干细胞在自己增殖的同时会分化

日本庆应大学医学部的研究团队采用患者身上提取的结肠癌细胞进行培养,再用干细胞特有的 LGR5 遗传因子进行荧光标识,然后移植到小鼠身上,进行治疗实验。结果发现,虽然药物可以杀死干细胞,使癌细胞停止增长,但是停止用药后,干细胞会再次出现,导致癌细胞继续扩大。

这是由于从干细胞分化来的短命细胞会发生“返祖”现象,使干细胞重新复活。正常状态下的肠道中,存在着干细胞和短寿命细胞。干细胞在自己增殖的同时会分化产生短寿命细胞,而短寿命细胞则不具备增殖能力。这两种细胞由不同的遗传因子控制,即使消灭了导致结肠癌转移和再发可能的肠癌干细胞,从干细胞分化来的短命细胞也会发生“返祖”现象,使干细胞重新复活。

这一结果给根治肠癌解明了大肠癌复发的机理,通过将干细胞治疗与现有药物组合使用,将给根治大肠癌带来希望。

原始出处:

Mariko Shimokawa,Yuki Ohta,Shingo Nishikori, et al.Visualization and targeting of LGR5+ human colon cancer stem cells.Nature. 2017 Mar 29

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 (5)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1881993, encodeId=1b731881993b1, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Sat Oct 21 00:16:00 CST 2017, time=2017-10-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1294318, encodeId=9598129431893, content=<a href='/topic/show?id=ca6e592189b' target=_blank style='color:#2F92EE;'>#日本#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=59218, encryptionId=ca6e592189b, topicName=日本)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f634250, createdName=chentianping, createdTime=Sat May 06 09:16:00 CST 2017, time=2017-05-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=194153, encodeId=ab65194153c7, content=学习了解了,谢谢分享。肿瘤复发转移的机制很复杂, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=550d2008262, createdName=luominglian113, createdTime=Fri May 05 12:45:48 CST 2017, time=2017-05-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=193827, encodeId=be3219382eba, content=就是肿瘤干细胞呀, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c4a5105539, createdName=lovetcm, createdTime=Thu May 04 21:58:54 CST 2017, time=2017-05-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=193807, encodeId=5eb319380eac, content=大肠癌的新发现,未来在免疫, beContent=null, objectType=article, channel=null, level=null, likeNumber=85, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/icyLhIGqru6gIknBJqfuPhbPwBo0yCebU4qpdSwzpBA1WFXMEUicoTnJDickpj9Ve1cUdNjjTiaDXmpXL47LYh3DdYkPOA2kddyZ/0, createdBy=508c2054450, createdName=solarjin, createdTime=Thu May 04 20:03:34 CST 2017, time=2017-05-04, status=1, ipAttribution=)]
    2017-10-21 liye789132251
  2. [GetPortalCommentsPageByObjectIdResponse(id=1881993, encodeId=1b731881993b1, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Sat Oct 21 00:16:00 CST 2017, time=2017-10-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1294318, encodeId=9598129431893, content=<a href='/topic/show?id=ca6e592189b' target=_blank style='color:#2F92EE;'>#日本#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=59218, encryptionId=ca6e592189b, topicName=日本)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f634250, createdName=chentianping, createdTime=Sat May 06 09:16:00 CST 2017, time=2017-05-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=194153, encodeId=ab65194153c7, content=学习了解了,谢谢分享。肿瘤复发转移的机制很复杂, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=550d2008262, createdName=luominglian113, createdTime=Fri May 05 12:45:48 CST 2017, time=2017-05-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=193827, encodeId=be3219382eba, content=就是肿瘤干细胞呀, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c4a5105539, createdName=lovetcm, createdTime=Thu May 04 21:58:54 CST 2017, time=2017-05-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=193807, encodeId=5eb319380eac, content=大肠癌的新发现,未来在免疫, beContent=null, objectType=article, channel=null, level=null, likeNumber=85, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/icyLhIGqru6gIknBJqfuPhbPwBo0yCebU4qpdSwzpBA1WFXMEUicoTnJDickpj9Ve1cUdNjjTiaDXmpXL47LYh3DdYkPOA2kddyZ/0, createdBy=508c2054450, createdName=solarjin, createdTime=Thu May 04 20:03:34 CST 2017, time=2017-05-04, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1881993, encodeId=1b731881993b1, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Sat Oct 21 00:16:00 CST 2017, time=2017-10-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1294318, encodeId=9598129431893, content=<a href='/topic/show?id=ca6e592189b' target=_blank style='color:#2F92EE;'>#日本#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=59218, encryptionId=ca6e592189b, topicName=日本)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f634250, createdName=chentianping, createdTime=Sat May 06 09:16:00 CST 2017, time=2017-05-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=194153, encodeId=ab65194153c7, content=学习了解了,谢谢分享。肿瘤复发转移的机制很复杂, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=550d2008262, createdName=luominglian113, createdTime=Fri May 05 12:45:48 CST 2017, time=2017-05-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=193827, encodeId=be3219382eba, content=就是肿瘤干细胞呀, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c4a5105539, createdName=lovetcm, createdTime=Thu May 04 21:58:54 CST 2017, time=2017-05-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=193807, encodeId=5eb319380eac, content=大肠癌的新发现,未来在免疫, beContent=null, objectType=article, channel=null, level=null, likeNumber=85, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/icyLhIGqru6gIknBJqfuPhbPwBo0yCebU4qpdSwzpBA1WFXMEUicoTnJDickpj9Ve1cUdNjjTiaDXmpXL47LYh3DdYkPOA2kddyZ/0, createdBy=508c2054450, createdName=solarjin, createdTime=Thu May 04 20:03:34 CST 2017, time=2017-05-04, status=1, ipAttribution=)]
    2017-05-05 luominglian113

    学习了解了,谢谢分享。肿瘤复发转移的机制很复杂

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1881993, encodeId=1b731881993b1, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Sat Oct 21 00:16:00 CST 2017, time=2017-10-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1294318, encodeId=9598129431893, content=<a href='/topic/show?id=ca6e592189b' target=_blank style='color:#2F92EE;'>#日本#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=59218, encryptionId=ca6e592189b, topicName=日本)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f634250, createdName=chentianping, createdTime=Sat May 06 09:16:00 CST 2017, time=2017-05-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=194153, encodeId=ab65194153c7, content=学习了解了,谢谢分享。肿瘤复发转移的机制很复杂, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=550d2008262, createdName=luominglian113, createdTime=Fri May 05 12:45:48 CST 2017, time=2017-05-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=193827, encodeId=be3219382eba, content=就是肿瘤干细胞呀, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c4a5105539, createdName=lovetcm, createdTime=Thu May 04 21:58:54 CST 2017, time=2017-05-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=193807, encodeId=5eb319380eac, content=大肠癌的新发现,未来在免疫, beContent=null, objectType=article, channel=null, level=null, likeNumber=85, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/icyLhIGqru6gIknBJqfuPhbPwBo0yCebU4qpdSwzpBA1WFXMEUicoTnJDickpj9Ve1cUdNjjTiaDXmpXL47LYh3DdYkPOA2kddyZ/0, createdBy=508c2054450, createdName=solarjin, createdTime=Thu May 04 20:03:34 CST 2017, time=2017-05-04, status=1, ipAttribution=)]
    2017-05-04 lovetcm

    就是肿瘤干细胞呀

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1881993, encodeId=1b731881993b1, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Sat Oct 21 00:16:00 CST 2017, time=2017-10-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1294318, encodeId=9598129431893, content=<a href='/topic/show?id=ca6e592189b' target=_blank style='color:#2F92EE;'>#日本#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=59218, encryptionId=ca6e592189b, topicName=日本)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f634250, createdName=chentianping, createdTime=Sat May 06 09:16:00 CST 2017, time=2017-05-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=194153, encodeId=ab65194153c7, content=学习了解了,谢谢分享。肿瘤复发转移的机制很复杂, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=550d2008262, createdName=luominglian113, createdTime=Fri May 05 12:45:48 CST 2017, time=2017-05-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=193827, encodeId=be3219382eba, content=就是肿瘤干细胞呀, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c4a5105539, createdName=lovetcm, createdTime=Thu May 04 21:58:54 CST 2017, time=2017-05-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=193807, encodeId=5eb319380eac, content=大肠癌的新发现,未来在免疫, beContent=null, objectType=article, channel=null, level=null, likeNumber=85, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/icyLhIGqru6gIknBJqfuPhbPwBo0yCebU4qpdSwzpBA1WFXMEUicoTnJDickpj9Ve1cUdNjjTiaDXmpXL47LYh3DdYkPOA2kddyZ/0, createdBy=508c2054450, createdName=solarjin, createdTime=Thu May 04 20:03:34 CST 2017, time=2017-05-04, status=1, ipAttribution=)]
    2017-05-04 solarjin

    大肠癌的新发现,未来在免疫

    0

相关资讯

[一文读懂]结直肠癌的辅助化疗(下)

结直肠癌是我国最为常见的消化道恶性肿瘤之一,据2016年最新发布的中国肿瘤统计(Cancer Statistics in China,2015)显示,我国结直肠癌在过去的十年发病率呈逐渐上升趋势,其发病率和死亡率均已跃居第三位。对于初诊时没有发生远处转移的早期结直肠癌患者,手术切除仍是最主要的治疗手段。而为降低手术后复发转移风险,提高总体疗效,另一个有效的治疗方案是以氟尿嘧啶为基础的辅助化疗。氟尿

SCI REP:DADS下调LIMK1-ADF/cofilin抑制结肠癌迁移与侵袭

结肠癌是人类最常见的恶性肿瘤之一,发病率及死亡率不断增长。晚期结肠癌预后不良的主要原因是对化疗的抵抗以及5年内约50%结肠癌患者出现的远处转移。因此探索结肠癌转移的分子机制对结肠癌的治疗至关重要。大蒜不仅是一种颇受欢迎的食物,还具有一定的抗肿瘤作用。大蒜成分diallyl disulfide(DADS)是大蒜具有抗肿瘤作用的主要原因。已有研究证明沉默LIMK1可以显着增强DADS对结肠癌细胞迁移侵

JAMA Surg:结肠癌手术部位感染风险因素

多种因素会导致结肠癌术后感染风险增加

JASN:透析的患者进行结肠癌筛查:选择是否明智?

结肠癌筛查是针对死亡风险最低和移植可能性最高的透析患者,但绝对率很高,提示存在过度筛查。

CLIN CHEM:结肠癌中的转移性循环肿瘤细胞的分子相揭示了调节能量代谢和DNA修复基因的关键作用

解决调节转移性循环肿瘤细胞(CTCs)的生物学的分子机制迫切需要了解转移的形成和肿瘤的复发。该团队以前建立了来自结肠癌患者转移性CTC的第一个细胞系(CTC-MCC-41)。 在本研究中,研究人员使用人类基因组U133 Plus 2.0微阵列分析了CTC-MCC-41细胞的转录组,目的是揭示其特征(干细胞特性和启动和支持转移形成的能力)的分子基础。

Cancer Lett:厦门大学陈清西课题组揭示视黄酸受体α促进结肠癌细胞生长的分子机制

近期,厦门大学陈清西教授课题组在肿瘤研究领域重要期刊《Cancer Letters》杂志在线发表了 “Oncogenic retinoic acid receptor α promotes human colorectal cancer growth through simultaneously regulating p21 transcription and GSK3β/β-catenin si

Baidu
map
Baidu
map
Baidu
map