Baidu
map

Cell Stem Cell:iPS细胞与核移植技术的优劣比较

2014-11-13 koo 生物360

立志做土豪的土鳖微宝纽约干细胞基因会研究所(NYSCF)的研究人员,对 iPS生成的多能干细胞和体细胞核移植(SCNT)生成的胚胎干细胞进行了深入比较,并将结果发表在本期的Cell Stem Cell杂志上。 研究人员发现,iPS和SCNT得到的细胞有着高度相似的基因表达和DNA甲基化模式,而且细胞出现了数量相当的DNA突变。这说明重编程过程本身就会引发突变,与使用哪种方法没什么

立志做土豪的土鳖微宝纽约干细胞基因会研究所(NYSCF)的研究人员,对 iPS生成的多能干细胞和体细胞核移植(SCNT)生成的胚胎干细胞进行了深入比较,并将结果发表在本期的Cell Stem Cell杂志上。





研究人员发现,iPS和SCNT得到的细胞有着高度相似的基因表达和DNA甲基化模式,而且细胞出现了数量相当的DNA突变。这说明重编程过程本身就会引发突变,与使用哪种方法没什么关系。
虽然iPS和SCNT都能生成多能干细胞,但它们的过程是完全不同的。iPS技术需要在成体细胞中表达几个关键基因,将细胞逆转到类似胚胎的状态。SCNT是用成体细胞的核替换卵细胞或卵母细胞的核,生成带有成体细胞遗传物质的胚胎干细胞。在理论上,不同方法生成的细胞应当带有不同的特性。今年早些时候NYSCF的科学家们通过SCNT成功生成了人类胚胎干细胞,再次引发了iPS和SCNT孰优孰劣的争论。

“我们的研究显示,生成患者自身干细胞现在有两种方法,它们都有潜力用于临床治疗。我们也为那些在iPS细胞上进行基础研究的科学家们带来了好消息。研究表明,在基因表达和DNA甲基化方面,这些细胞与人类胚胎干细胞非常相似。至于我们发现的突变对重编程的临床应用有何影响,这个问题将成为人们争论的焦点,”文章的资深作者Dr. Dieter Egli说。

在这项研究中,研究人员构建了来源相同的iPS和SCNT细胞系,比较了它们遗传编码的突变频率,并通过DNA甲基化和基因表达模式评估了它们与胚胎状态的相似度。研究显示,iPS和SCNT都能将已分化细胞有效重编程为干细胞,这两种方法生成的细胞在基因表达和DNA甲基化模式方面非常类似。

在遗传编码方面,SCNT和iPS细胞中的突变频率很接近。另外,这些细胞的印记基因也发生了数量相当的甲基化改变。从这些方面来看,SCNT和iPS可以说是半斤八两。

研究人员还研究了来自未受精人类卵母细胞的胚胎干细胞,和源自剩余IVF胚胎的胚胎干细胞。研究表明,SCNT和iPS细胞存在更多的异常。这说明,已分化的成体细胞重编程为干细胞存在着内在的缺陷,与诱导方法关系不大。

“我们还不清楚哪一种技术会生成治疗所需的最佳细胞,”NYSCF的CEO和创始人Susan L. Solomon说了。

原始出处:

Bjarki Johannesson9, Ido Sagi9, Athurva Gore9, Daniel Paull, Mitsutoshi Yamada, Tamar Golan-Lev, Zhe Li, Charles LeDuc, Yufeng Shen,Samantha Stern, Nanfang Xu, Hong Ma, Eunju Kang, Shoukhrat Mitalipov, Mark V. Sauer, Kun Zhang, Nissim Benvenisty, Dieter Egli. Comparable Frequencies of Coding Mutations and Loss of Imprinting in Human Pluripotent Cells Derived by Nuclear Transfer and Defined Factors. Cell Stem Cell, 6 November 2014; DOI: 10.1016/j.stem.2014.10.002

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 (6)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1868943, encodeId=c8a4186894314, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Jan 05 13:15:00 CST 2015, time=2015-01-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1959189, encodeId=045219591894d, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, 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 28 14:15:00 CST 2014, time=2014-12-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794371, encodeId=8d191e94371de, content=<a href='/topic/show?id=82b416e79f5' target=_blank style='color:#2F92EE;'>#stem cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, 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=Fri Apr 03 11:15:00 CST 2015, time=2015-04-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1377716, encodeId=d0c013e7716fc, content=<a href='/topic/show?id=17b810004ce' target=_blank style='color:#2F92EE;'>#iPS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10004, encryptionId=17b810004ce, topicName=iPS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=69cb413, createdName=chengjn, createdTime=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1481844, encodeId=3d0d148184477, content=<a href='/topic/show?id=8cc416e78f3' target=_blank style='color:#2F92EE;'>#STEM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, 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=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1527111, encodeId=e095152e11114, content=<a href='/topic/show?id=24d610019a8' target=_blank style='color:#2F92EE;'>#iPS细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10019, encryptionId=24d610019a8, topicName=iPS细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a27a11802753, createdName=wmr115, createdTime=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=1868943, encodeId=c8a4186894314, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Jan 05 13:15:00 CST 2015, time=2015-01-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1959189, encodeId=045219591894d, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, 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 28 14:15:00 CST 2014, time=2014-12-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794371, encodeId=8d191e94371de, content=<a href='/topic/show?id=82b416e79f5' target=_blank style='color:#2F92EE;'>#stem cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, 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=Fri Apr 03 11:15:00 CST 2015, time=2015-04-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1377716, encodeId=d0c013e7716fc, content=<a href='/topic/show?id=17b810004ce' target=_blank style='color:#2F92EE;'>#iPS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10004, encryptionId=17b810004ce, topicName=iPS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=69cb413, createdName=chengjn, createdTime=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1481844, encodeId=3d0d148184477, content=<a href='/topic/show?id=8cc416e78f3' target=_blank style='color:#2F92EE;'>#STEM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, 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=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1527111, encodeId=e095152e11114, content=<a href='/topic/show?id=24d610019a8' target=_blank style='color:#2F92EE;'>#iPS细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10019, encryptionId=24d610019a8, topicName=iPS细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a27a11802753, createdName=wmr115, createdTime=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=)]
    2014-12-28 维他命
  3. [GetPortalCommentsPageByObjectIdResponse(id=1868943, encodeId=c8a4186894314, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Jan 05 13:15:00 CST 2015, time=2015-01-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1959189, encodeId=045219591894d, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, 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 28 14:15:00 CST 2014, time=2014-12-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794371, encodeId=8d191e94371de, content=<a href='/topic/show?id=82b416e79f5' target=_blank style='color:#2F92EE;'>#stem cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, 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=Fri Apr 03 11:15:00 CST 2015, time=2015-04-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1377716, encodeId=d0c013e7716fc, content=<a href='/topic/show?id=17b810004ce' target=_blank style='color:#2F92EE;'>#iPS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10004, encryptionId=17b810004ce, topicName=iPS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=69cb413, createdName=chengjn, createdTime=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1481844, encodeId=3d0d148184477, content=<a href='/topic/show?id=8cc416e78f3' target=_blank style='color:#2F92EE;'>#STEM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, 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=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1527111, encodeId=e095152e11114, content=<a href='/topic/show?id=24d610019a8' target=_blank style='color:#2F92EE;'>#iPS细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10019, encryptionId=24d610019a8, topicName=iPS细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a27a11802753, createdName=wmr115, createdTime=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=)]
  4. [GetPortalCommentsPageByObjectIdResponse(id=1868943, encodeId=c8a4186894314, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Jan 05 13:15:00 CST 2015, time=2015-01-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1959189, encodeId=045219591894d, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, 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 28 14:15:00 CST 2014, time=2014-12-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794371, encodeId=8d191e94371de, content=<a href='/topic/show?id=82b416e79f5' target=_blank style='color:#2F92EE;'>#stem cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, 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=Fri Apr 03 11:15:00 CST 2015, time=2015-04-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1377716, encodeId=d0c013e7716fc, content=<a href='/topic/show?id=17b810004ce' target=_blank style='color:#2F92EE;'>#iPS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10004, encryptionId=17b810004ce, topicName=iPS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=69cb413, createdName=chengjn, createdTime=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1481844, encodeId=3d0d148184477, content=<a href='/topic/show?id=8cc416e78f3' target=_blank style='color:#2F92EE;'>#STEM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, 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=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1527111, encodeId=e095152e11114, content=<a href='/topic/show?id=24d610019a8' target=_blank style='color:#2F92EE;'>#iPS细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10019, encryptionId=24d610019a8, topicName=iPS细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a27a11802753, createdName=wmr115, createdTime=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=)]
    2014-11-15 chengjn
  5. [GetPortalCommentsPageByObjectIdResponse(id=1868943, encodeId=c8a4186894314, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Jan 05 13:15:00 CST 2015, time=2015-01-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1959189, encodeId=045219591894d, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, 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 28 14:15:00 CST 2014, time=2014-12-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794371, encodeId=8d191e94371de, content=<a href='/topic/show?id=82b416e79f5' target=_blank style='color:#2F92EE;'>#stem cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, 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=Fri Apr 03 11:15:00 CST 2015, time=2015-04-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1377716, encodeId=d0c013e7716fc, content=<a href='/topic/show?id=17b810004ce' target=_blank style='color:#2F92EE;'>#iPS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10004, encryptionId=17b810004ce, topicName=iPS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=69cb413, createdName=chengjn, createdTime=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1481844, encodeId=3d0d148184477, content=<a href='/topic/show?id=8cc416e78f3' target=_blank style='color:#2F92EE;'>#STEM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, 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=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1527111, encodeId=e095152e11114, content=<a href='/topic/show?id=24d610019a8' target=_blank style='color:#2F92EE;'>#iPS细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10019, encryptionId=24d610019a8, topicName=iPS细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a27a11802753, createdName=wmr115, createdTime=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=)]
  6. [GetPortalCommentsPageByObjectIdResponse(id=1868943, encodeId=c8a4186894314, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Jan 05 13:15:00 CST 2015, time=2015-01-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1959189, encodeId=045219591894d, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, 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 28 14:15:00 CST 2014, time=2014-12-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794371, encodeId=8d191e94371de, content=<a href='/topic/show?id=82b416e79f5' target=_blank style='color:#2F92EE;'>#stem cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, 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=Fri Apr 03 11:15:00 CST 2015, time=2015-04-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1377716, encodeId=d0c013e7716fc, content=<a href='/topic/show?id=17b810004ce' target=_blank style='color:#2F92EE;'>#iPS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10004, encryptionId=17b810004ce, topicName=iPS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=69cb413, createdName=chengjn, createdTime=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1481844, encodeId=3d0d148184477, content=<a href='/topic/show?id=8cc416e78f3' target=_blank style='color:#2F92EE;'>#STEM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, 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=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1527111, encodeId=e095152e11114, content=<a href='/topic/show?id=24d610019a8' target=_blank style='color:#2F92EE;'>#iPS细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10019, encryptionId=24d610019a8, topicName=iPS细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a27a11802753, createdName=wmr115, createdTime=Sat Nov 15 02:15:00 CST 2014, time=2014-11-15, status=1, ipAttribution=)]
    2014-11-15 wmr115

相关资讯

Cell:体细胞重编程有助于更高效地获得干细胞

来自加州大学旧金山分校的一项干细胞研究新发现,也许有一天会促成更简化的程序获得干细胞,转而应用于培育出可替代衰退身体部位的组织。科学家们将他们的研究结果发布在《细胞》(Cell)杂志上。 这项研究工作是建立于体细胞重编程基础上。体细胞重编程是指将成体细胞重编程逆转至胚胎状态,使它们重新获得变为所有细胞类型的潜能的一个过程。 或许很快这一过程的效率就能得到提高。加州大学旧金山分校的科学家们鉴别出

Sci Transl Med:患者特异性iPS细胞ALS药物筛选现曙光

肌萎缩性脊髓侧索硬化症(ALS)是一种迟发性的,致命疾病,患者的运动神经元严重退化。难以获得ALS患者的运动神经元和缺乏相应的疾病模型,严重阻碍着发现新的ALS治疗药物。 研究者从携带TDP-43蛋白突变的家族性ALS患者的运动神经元细胞,成功诱导出多能干细胞(iPS细胞)。ALS患者特异性IPSC衍生出的运动神经元,可形成类似ALS患者死后组织中出现的细胞内的聚集,并展示出ALS斑马鱼模型中观

日本欲用不易排异血液培育干细胞

       日本京都大学iPS细胞(诱导多功能干细胞)研究所和日本红十字会12月26日达成合作意向,在献血者中寻找不易产生排异反应的血型,并利用其血液细胞培育iPS细胞,日后再使其分化、发育成特定细胞或组织。         京都大学iPS细胞研究所由今年获得诺贝尔生理学或医学奖的日本科学家山中伸

日研究人员用iPS细胞再现帕金森氏症脑内异常

  日本庆应义塾大学和顺天堂大学的研究人员10月10日宣布,他们用帕金森氏症患者的皮肤细胞培养出诱导多功能干细胞(iPS细胞),并首次再现了患者脑内出现的异常蛋白质蓄积。   帕金森氏症是一种中老年人常见的中枢神经系统变性疾病,主要表现为手脚震颤和身体僵硬等,并发认知障碍的概率很高。该病病因目前仍不十分清楚,一般认为病因之一是脑部分泌神经传递物质多巴胺的神经细胞减少。   研究人员用一名70多

诱导多能干细胞人体试验在科学界激起波澜

Masayo Takahashi 图片来源:JIJI PRESS/AFP/Getty Images “这是令人敬畏的、疯狂的,我非常激动,我一直在等待它的到来。”美国加利福尼亚州拉荷亚斯克利普斯研究所干细胞生物学家Jeanne Loring说。她是全世界欢迎干细胞疗法新消息的几位研究人员中的一位——存在视觉缺陷的一位日本女性成为接受诱导多能干(iPS)细胞疗法的第一人。

首例使用ips细胞的患者将现身日本

一名日本眼病患者将成为第一个用诱导干细胞(ips)治疗疾病的人。2006年日本干细胞学家山中教授因为发明ips技术获得诺贝尔生理学和医学奖。卫生部门组织的一个委员会已经对实验安全性进行投票,现在开始实验在程序上已经没有任何障碍。日本理化研究所发育生物学中心干细胞学家MasayoTakahashi已经为治疗一例黄斑变性患者准备好iPS细胞,和胚胎干细胞不同,iPS细胞来自患者的成体细胞,因此不存在遗

Baidu
map
Baidu
map
Baidu
map