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JCC:吞噬运动蛋白1可以通过Rac1通路保护小鼠免受DSS诱导的结肠损伤

2018-10-05 MedSci MedSci原创

粘膜愈合是克罗恩病治疗中最新的治疗目标,获得此治疗目标可能会使炎症性肠病[IBD]的患者获得更长的临床缓解时间。因此,研究人员希望研究吞噬和细胞运动蛋白1 [ELMO1]在体外和体内伤口愈合中与炎症性肠病发病机制之间关系。

背景及目的
粘膜愈合是克罗恩病治疗中最新的治疗目标,获得此治疗目标可能会使炎症性肠病[IBD]的患者获得更长的临床缓解时间。因此,研究人员希望研究吞噬和细胞运动蛋白1 [ELMO1]在体外和体内伤口愈合中与炎症性肠病发病机制之间关系。

方法
研究人员首先进行RNA转录组测序以检测IBD患者的炎症肠管与相应非发炎组织之间mRNA的表达谱的差异,然后进行Gene Expression Omnibus [GEO]数据收集和蛋白质印迹分析,接着他们测定了ELMO1过表达或敲低对细胞迁移和增殖的影响。使用Rac1抑制剂[NSC23766]和Rac1下拉测定法评估这些作用对Rac1的依赖性。最后建立葡聚糖硫酸钠[DSS]诱导的结肠炎模型以评估ELMO1在结肠粘膜愈合中的作用。

结果
与相应的非炎症组织相比,ELMO1在炎症组织中明显上调。ELMO1过表达以Rac1依赖性方式增加细胞迁移。GEO分析显示ELMO1过表达首先影响参与细胞骨架调节和伤口愈合的途径,这通过增强的F-肌动蛋白染色和过量表达ELMO1的细胞中延长的片状伪足的数量可以证明。在DSS诱导的结肠炎中,pSin-EF2-ELMO1-Pur的全身递送减弱了结肠炎症并促进了结肠损伤的恢复。最后研究人员发现ELMO1的保护作用依赖于Rac1活化。

结论
ELMO1蛋白需要通过激活Rac1通路才能对肠上皮迁移的产生影响,从而保护小鼠免受DSS诱导的结肠损伤。

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  1. [GetPortalCommentsPageByObjectIdResponse(id=1397637, encodeId=e514139e63776, content=<a href='/topic/show?id=8bee565436d' target=_blank style='color:#2F92EE;'>#损伤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=56543, encryptionId=8bee565436d, topicName=损伤)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/DYAIOgq83eoNX3lUOlDKGBUEPNwZx0nibmdcFyeibnX4WMhUSCU2REpGRWtSmnT2CCs0dA5waxvJknYDxwtYnIcQ/132, createdBy=294e2500218, createdName=ms3046638856685384, createdTime=Sun Oct 07 01:22:00 CST 2018, time=2018-10-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=348170, encodeId=ddfa3481e0b5, content=学习了谢谢, 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/Q0j4TwGTfTLbTp9nZtjwVrSZNxAXbAicnKQWnic2eBdJUQYhxO36XdkstSicr7FVF8p5ReH4omtmsbnLdvZLiaJJ1A/132, createdBy=8bff2327056, createdName=kafei, createdTime=Sat Oct 06 09:26:12 CST 2018, time=2018-10-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=348089, encodeId=d2de348089ed, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a8f22260741, createdName=121832a9m88暂无昵称, createdTime=Fri Oct 05 23:59:12 CST 2018, time=2018-10-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=348014, encodeId=8ce1348014e7, content=谢谢分享,学习了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=71, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/07/16/3b24606172648eea459125cb74754afe.jpg, createdBy=6c022216608, createdName=liumin1987, createdTime=Fri Oct 05 10:41:15 CST 2018, time=2018-10-05, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=1397637, encodeId=e514139e63776, content=<a href='/topic/show?id=8bee565436d' target=_blank style='color:#2F92EE;'>#损伤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=56543, encryptionId=8bee565436d, topicName=损伤)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/DYAIOgq83eoNX3lUOlDKGBUEPNwZx0nibmdcFyeibnX4WMhUSCU2REpGRWtSmnT2CCs0dA5waxvJknYDxwtYnIcQ/132, createdBy=294e2500218, createdName=ms3046638856685384, createdTime=Sun Oct 07 01:22:00 CST 2018, time=2018-10-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=348170, encodeId=ddfa3481e0b5, content=学习了谢谢, 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/Q0j4TwGTfTLbTp9nZtjwVrSZNxAXbAicnKQWnic2eBdJUQYhxO36XdkstSicr7FVF8p5ReH4omtmsbnLdvZLiaJJ1A/132, createdBy=8bff2327056, createdName=kafei, createdTime=Sat Oct 06 09:26:12 CST 2018, time=2018-10-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=348089, encodeId=d2de348089ed, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a8f22260741, createdName=121832a9m88暂无昵称, createdTime=Fri Oct 05 23:59:12 CST 2018, time=2018-10-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=348014, encodeId=8ce1348014e7, content=谢谢分享,学习了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=71, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/07/16/3b24606172648eea459125cb74754afe.jpg, createdBy=6c022216608, createdName=liumin1987, createdTime=Fri Oct 05 10:41:15 CST 2018, time=2018-10-05, status=1, ipAttribution=)]
    2018-10-06 kafei

    学习了谢谢

    0

  3. [GetPortalCommentsPageByObjectIdResponse(id=1397637, encodeId=e514139e63776, content=<a href='/topic/show?id=8bee565436d' target=_blank style='color:#2F92EE;'>#损伤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=56543, encryptionId=8bee565436d, topicName=损伤)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/DYAIOgq83eoNX3lUOlDKGBUEPNwZx0nibmdcFyeibnX4WMhUSCU2REpGRWtSmnT2CCs0dA5waxvJknYDxwtYnIcQ/132, createdBy=294e2500218, createdName=ms3046638856685384, createdTime=Sun Oct 07 01:22:00 CST 2018, time=2018-10-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=348170, encodeId=ddfa3481e0b5, content=学习了谢谢, 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/Q0j4TwGTfTLbTp9nZtjwVrSZNxAXbAicnKQWnic2eBdJUQYhxO36XdkstSicr7FVF8p5ReH4omtmsbnLdvZLiaJJ1A/132, createdBy=8bff2327056, createdName=kafei, createdTime=Sat Oct 06 09:26:12 CST 2018, time=2018-10-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=348089, encodeId=d2de348089ed, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a8f22260741, createdName=121832a9m88暂无昵称, createdTime=Fri Oct 05 23:59:12 CST 2018, time=2018-10-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=348014, encodeId=8ce1348014e7, content=谢谢分享,学习了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=71, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/07/16/3b24606172648eea459125cb74754afe.jpg, createdBy=6c022216608, createdName=liumin1987, createdTime=Fri Oct 05 10:41:15 CST 2018, time=2018-10-05, status=1, ipAttribution=)]
    2018-10-05 121832a9m88暂无昵称

    学习了

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1397637, encodeId=e514139e63776, content=<a href='/topic/show?id=8bee565436d' target=_blank style='color:#2F92EE;'>#损伤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=56543, encryptionId=8bee565436d, topicName=损伤)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/DYAIOgq83eoNX3lUOlDKGBUEPNwZx0nibmdcFyeibnX4WMhUSCU2REpGRWtSmnT2CCs0dA5waxvJknYDxwtYnIcQ/132, createdBy=294e2500218, createdName=ms3046638856685384, createdTime=Sun Oct 07 01:22:00 CST 2018, time=2018-10-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=348170, encodeId=ddfa3481e0b5, content=学习了谢谢, 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/Q0j4TwGTfTLbTp9nZtjwVrSZNxAXbAicnKQWnic2eBdJUQYhxO36XdkstSicr7FVF8p5ReH4omtmsbnLdvZLiaJJ1A/132, createdBy=8bff2327056, createdName=kafei, createdTime=Sat Oct 06 09:26:12 CST 2018, time=2018-10-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=348089, encodeId=d2de348089ed, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a8f22260741, createdName=121832a9m88暂无昵称, createdTime=Fri Oct 05 23:59:12 CST 2018, time=2018-10-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=348014, encodeId=8ce1348014e7, content=谢谢分享,学习了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=71, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/07/16/3b24606172648eea459125cb74754afe.jpg, createdBy=6c022216608, createdName=liumin1987, createdTime=Fri Oct 05 10:41:15 CST 2018, time=2018-10-05, status=1, ipAttribution=)]
    2018-10-05 liumin1987

    谢谢分享,学习了。

    0

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