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Cell Stem Cell:视网膜色素上皮细胞具有干细胞特征

2013-01-29 Cell Stem Cell 手牵手博客

   视网膜色素上皮(retinal pigment epithelium,RPE)细胞是一种单层细胞,位于神经视网膜和血管脉络膜血管层之间,支撑着神经视网膜。视网膜色素上皮的退化可以引发多种疾病,如老年黄斑变性和色素性视网膜炎,甚至可以引起失明。目前对这些疾病治疗方法有限,找到一种新的方法刺激视网膜色素上皮的修复是非常必要的。近日,美国纽约Rensselaer神经干细胞研究所Sally


   视网膜色素上皮(retinal pigment epithelium,RPE)细胞是一种单层细胞,位于神经视网膜和血管脉络膜血管层之间,支撑着神经视网膜。视网膜色素上皮的退化可以引发多种疾病,如老年黄斑变性和色素性视网膜炎,甚至可以引起失明。目前对这些疾病治疗方法有限,找到一种新的方法刺激视网膜色素上皮的修复是非常必要的。近日,美国纽约Rensselaer神经干细胞研究所Sally Temple领导的研究小组获得视网膜色素上皮组织来源的干细胞,而且是来自供者死亡几个小时后的眼睛。该研究结果刊登在《Cell Stem Cell》杂志上。

    研究人员将来自22岁到99岁的人尸体上的视网膜色素上皮组织放在多种培养条件下培养,以便观察这些细胞的变化。研究人员发现一组条件能让它们发生细胞分裂,但同时也发现并不是所有的视网膜色素上皮组织细胞都拥有这种再生潜能,大约只有10%的细胞具有再生能力。进一步的研究表明,被称为视网膜色素上皮干细胞的有大约10%是多能性的,这意味着它们能够形成不同细胞类型,不过研究人员承认仍然需要开展更多的研究以便充分探索这些细胞的分化能力。

     这项研究结果的发现表明,视网膜色素上皮干细胞是一种可获得的、人类中枢神经系统来源的多潜能干细胞,拥有自我更新能力,在合适的培养条件下能够被唤醒并活跃增长,也能够被诱导而形成其他细胞类型。这项研究结果可应用于医学研究、替代治疗和疾病模型。(编译: 视网膜色素上皮(retinal pigment epithelium,RPE)细胞是一种单层细胞,位于神经视网膜和血管脉络膜血管层之间,支撑着神经视网膜。视网膜色素上皮的退化可以引发多种疾病,如老年黄斑变性和色素性视网膜炎,甚至可以引起失明。目前对这些疾病治疗方法有限,找到一种新的方法刺激视网膜色素上皮的修复是非常必要的。近日,美国纽约Rensselaer神经干细胞研究所Sally Temple领导的研究小组获得视网膜色素上皮组织来源的干细胞,而且是来自供者死亡几个小时后的眼睛。该研究结果刊登在《Cell Stem Cell》杂志上。

   研究人员将来自22岁到99岁的人尸体上的视网膜色素上皮组织放在多种培养条件下培养,以便观察这些细胞的变化。研究人员发现一组条件能让它们发生细胞分裂,但同时也发现并不是所有的视网膜色素上皮组织细胞都拥有这种再生潜能,大约只有10%的细胞具有再生能力。进一步的研究表明,被称为视网膜色素上皮干细胞的有大约10%是多能性的,这意味着它们能够形成不同细胞类型,不过研究人员承认仍然需要开展更多的研究以便充分探索这些细胞的分化能力。

   这项研究结果的发现表明,视网膜色素上皮干细胞是一种可获得的、人类中枢神经系统来源的多潜能干细胞,拥有自我更新能力,在合适的培养条件下能够被唤醒并活跃增长,也能够被诱导而形成其他细胞类型。这项研究结果可应用于医学研究、替代治疗和疾病模型。


Adult Human RPE Can Be Activated into a Multipotent Stem Cell that Produces Mesenchymal Derivatives

Summary

The retinal pigment epithelium (RPE) is a monolayer of cells underlying and supporting the neural retina. It begins as a plastic tissue, capable, in some species, of generating lens and retina, but differentiates early in development and remains normally nonproliferative throughout life. Here we show that a subpopulation of adult human RPE cells can be activated in vitro to a self-renewing cell, the retinal pigment epithelial stem cell (RPESC) that loses RPE markers, proliferates extensively, and can redifferentiate into stable cobblestone RPE monolayers. Clonal studies demonstrate that RPESCs are multipotent and in defined conditions can generate both neural and mesenchymal progeny. This plasticity may explain human pathologies in which mesenchymal fates are seen in the eye, for example in proliferative vitroretinopathy (PVR) and phthisis bulbi. This study establishes the RPESC as an accessible, human CNS-derived multipotent stem cell, useful for the study of fate choice, replacement therapy, and disease modeling.



    

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    2013-12-22 维他命
  2. 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    2013-06-03 sunylz
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  7. 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createdName=sunylz, createdTime=Mon Jun 03 14:14:00 CST 2013, time=2013-06-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1868621, encodeId=06d6186862102, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=71, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Wed Oct 09 16:14:00 CST 2013, time=2013-10-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1810977, encodeId=398018109e723, content=<a href='/topic/show?id=560e86e092b' target=_blank style='color:#2F92EE;'>#色素上皮细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=86709, encryptionId=560e86e092b, topicName=色素上皮细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=570f404, createdName=xlxchina, createdTime=Mon Jul 15 00:14:00 CST 2013, time=2013-07-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1810946, encodeId=aae7181094692, content=<a href='/topic/show?id=bf4486e08be' target=_blank style='color:#2F92EE;'>#色素上皮#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=86708, encryptionId=bf4486e08be, topicName=色素上皮)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=73a3403, createdName=weihongyv, createdTime=Wed May 15 09:14:00 CST 2013, time=2013-05-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794337, encodeId=dc311e94337ac, content=<a href='/topic/show?id=82b416e79f5' target=_blank style='color:#2F92EE;'>#stem cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16779, encryptionId=82b416e79f5, topicName=stem cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Wed Jan 15 01:14:00 CST 2014, time=2014-01-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1269777, encodeId=06e91269e7757, content=<a href='/topic/show?id=979690e33bd' target=_blank style='color:#2F92EE;'>#视网膜#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90733, encryptionId=979690e33bd, topicName=视网膜)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=742793, createdName=zutt, createdTime=Thu Jan 31 07:14:00 CST 2013, time=2013-01-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1481790, encodeId=a4bd1481e9000, content=<a href='/topic/show?id=8cc416e78f3' target=_blank style='color:#2F92EE;'>#STEM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16778, encryptionId=8cc416e78f3, topicName=STEM)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d1067833268, createdName=12498bb3m92(暂无昵称), createdTime=Thu Jan 31 07:14:00 CST 2013, time=2013-01-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1533805, encodeId=be0015338053a, content=<a href='/topic/show?id=4be9200308c' target=_blank style='color:#2F92EE;'>#上皮细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=20030, encryptionId=4be9200308c, topicName=上皮细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=3a5d12492718, createdName=lizhou0208, createdTime=Thu Jan 31 07:14:00 CST 2013, time=2013-01-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1568410, encodeId=531515684108d, content=<a href='/topic/show?id=9fec9080901' target=_blank style='color:#2F92EE;'>#视网膜色素上皮细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90809, encryptionId=9fec9080901, topicName=视网膜色素上皮细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b1be15374853, createdName=wetgdt, createdTime=Thu Jan 31 07:14:00 CST 2013, time=2013-01-31, status=1, ipAttribution=)]
    2013-01-31 zutt
  8. [GetPortalCommentsPageByObjectIdResponse(id=1958855, encodeId=e9ba19588550f, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Sun Dec 22 03:14:00 CST 2013, time=2013-12-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1680217, encodeId=4543168021e36, content=<a href='/topic/show?id=9e5c86e0712' target=_blank style='color:#2F92EE;'>#色素#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=86707, encryptionId=9e5c86e0712, topicName=色素)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=343027846633, 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encryptionId=560e86e092b, topicName=色素上皮细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=570f404, createdName=xlxchina, createdTime=Mon Jul 15 00:14:00 CST 2013, time=2013-07-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1810946, encodeId=aae7181094692, content=<a href='/topic/show?id=bf4486e08be' target=_blank style='color:#2F92EE;'>#色素上皮#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=86708, encryptionId=bf4486e08be, topicName=色素上皮)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=73a3403, createdName=weihongyv, createdTime=Wed May 15 09:14:00 CST 2013, time=2013-05-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794337, encodeId=dc311e94337ac, content=<a href='/topic/show?id=82b416e79f5' target=_blank style='color:#2F92EE;'>#stem cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16779, encryptionId=82b416e79f5, topicName=stem cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Wed Jan 15 01:14:00 CST 2014, time=2014-01-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1269777, encodeId=06e91269e7757, content=<a href='/topic/show?id=979690e33bd' target=_blank style='color:#2F92EE;'>#视网膜#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90733, encryptionId=979690e33bd, topicName=视网膜)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=742793, createdName=zutt, createdTime=Thu Jan 31 07:14:00 CST 2013, time=2013-01-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1481790, encodeId=a4bd1481e9000, content=<a 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time=2013-01-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1568410, encodeId=531515684108d, content=<a href='/topic/show?id=9fec9080901' target=_blank style='color:#2F92EE;'>#视网膜色素上皮细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90809, encryptionId=9fec9080901, topicName=视网膜色素上皮细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b1be15374853, createdName=wetgdt, createdTime=Thu Jan 31 07:14:00 CST 2013, time=2013-01-31, status=1, ipAttribution=)]
  9. [GetPortalCommentsPageByObjectIdResponse(id=1958855, encodeId=e9ba19588550f, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Sun Dec 22 03:14:00 CST 2013, time=2013-12-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1680217, encodeId=4543168021e36, content=<a href='/topic/show?id=9e5c86e0712' target=_blank style='color:#2F92EE;'>#色素#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=86707, encryptionId=9e5c86e0712, topicName=色素)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=343027846633, 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  10. 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