Nucleic Acids Research:中科院多个课题组共同发现延缓干细胞衰老的表观机制

2020-05-20 MedSci原创 MedSci原创

最近,我国研究人员确定了ZKSCAN3在缓解衰老中的一种新的作用,这种作用独立于自噬相关的活性。

带有KRAB和SCAN域3的锌指蛋白(ZKSCAN3)长期以来一直被认为是自噬的主要转录抑制因子。

最近,我国研究人员确定了ZKSCAN3在缓解衰老中的一种新的作用,这种作用独立于自噬相关的活性。

在老化的人类间充质干细胞(hMSCs)中,研究人员观察到ZKSCAN3的下调,而ZKSCAN3的消耗会加速这些细胞的衰老。从机制上讲,ZKSCAN3通过与异染色质相关蛋白和核层蛋白相互作用来维持异染色质的稳定性。

进一步的研究表明,ZKSCAN3缺乏会导致基因组层状相关域(LADs)与核纤层的分离,失去异染色质,染色质状态变得更易接近,从而导致重复序列的异常转录。

ZKSCAN3的过度表达不仅能拯救ZKSCAN3缺陷的hMSCs中的过早衰老表型,而且还能使生理上和病理上衰老的hMSCs重获新生。

因此,这些数据首次揭示了ZKSCAN3作为表观遗传调节剂的功能,其可以维持异染色质组织,从而减弱细胞衰老。该研究结果在ZKSCAN3、表观遗传调节和干细胞衰老之间建立了新的功能联系。

 

原始出处:

Huifang Hu et al. ZKSCAN3 counteracts cellular senescence by stabilizing heterochromatin, Nucleic Acids Research (2020). DOI: https://doi.org/10.1093/nar/gkaa425

 

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    2021-11-12 湘雅科教

    已拜读,受益匪浅。

    0

  2. [GetPortalCommentsPageByObjectIdResponse(id=1069557, encodeId=2481106955e53, content=已拜读,受益匪浅。, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6c905475903, createdName=湘雅科教, createdTime=Fri Nov 12 10:40:27 CST 2021, time=2021-11-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1862682, encodeId=58e418626820a, content=<a href='/topic/show?id=a121223385b' target=_blank style='color:#2F92EE;'>#中科院#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=22338, encryptionId=a121223385b, topicName=中科院)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7a9987, createdName=gous, createdTime=Mon Jul 13 22:53:45 CST 2020, time=2020-07-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1911449, encodeId=314c1911449e8, content=<a href='/topic/show?id=dbda185590' target=_blank style='color:#2F92EE;'>#acid#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1855, encryptionId=dbda185590, topicName=acid)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7ca4300, createdName=wodejia-dayu, createdTime=Fri Dec 11 22:53:45 CST 2020, time=2020-12-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1991621, encodeId=027519916219d, content=<a href='/topic/show?id=f88a4e047f' target=_blank style='color:#2F92EE;'>#CID#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4704, encryptionId=f88a4e047f, topicName=CID)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=570f404, createdName=xlxchina, createdTime=Wed Nov 18 15:53:45 CST 2020, time=2020-11-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1025450, encodeId=1a1910254505e, content=干细胞是热点,但是进入临床仍然需要时间和临床疗效验证哦, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=独孤立克, createdTime=Sat May 23 16:53:45 CST 2020, time=2020-05-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1337117, encodeId=d3b5133e1175b, content=<a href='/topic/show?id=715ae8023ea' target=_blank style='color:#2F92EE;'>#细胞衰老#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=78023, encryptionId=715ae8023ea, topicName=细胞衰老)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTIW7uIr5ebYvJohUq0dkkVV05uF9jPpeyCrlcx904mUdMI9UKqpO3bt4GkgYBNdv485qT2NsVE27w/132, createdBy=023c2500122, createdName=ms8543593053280928, createdTime=Fri May 22 07:53:45 CST 2020, time=2020-05-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1557811, encodeId=df9a155e811f8, content=<a href='/topic/show?id=d2601533982' target=_blank style='color:#2F92EE;'>#Research#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15339, encryptionId=d2601533982, topicName=Research)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8e886, createdName=仁者大医, createdTime=Fri May 22 07:53:45 CST 2020, time=2020-05-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1039241, encodeId=ce54103924168, content=机制研究离临床仍然有距离,不过与临床结合思考,仍然有帮助的,不能仅仅是纯临床思维,转化思维同样重要, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=肿肿, createdTime=Wed May 20 19:53:45 CST 2020, time=2020-05-20, status=1, ipAttribution=)]
    2020-07-13 gous
  3. [GetPortalCommentsPageByObjectIdResponse(id=1069557, encodeId=2481106955e53, content=已拜读,受益匪浅。, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6c905475903, createdName=湘雅科教, createdTime=Fri Nov 12 10:40:27 CST 2021, time=2021-11-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1862682, encodeId=58e418626820a, content=<a href='/topic/show?id=a121223385b' target=_blank style='color:#2F92EE;'>#中科院#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=22338, encryptionId=a121223385b, topicName=中科院)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7a9987, createdName=gous, createdTime=Mon Jul 13 22:53:45 CST 2020, time=2020-07-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1911449, encodeId=314c1911449e8, content=<a href='/topic/show?id=dbda185590' target=_blank style='color:#2F92EE;'>#acid#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1855, encryptionId=dbda185590, topicName=acid)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7ca4300, createdName=wodejia-dayu, createdTime=Fri Dec 11 22:53:45 CST 2020, time=2020-12-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1991621, encodeId=027519916219d, content=<a href='/topic/show?id=f88a4e047f' target=_blank style='color:#2F92EE;'>#CID#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4704, encryptionId=f88a4e047f, topicName=CID)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=570f404, createdName=xlxchina, createdTime=Wed Nov 18 15:53:45 CST 2020, time=2020-11-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1025450, encodeId=1a1910254505e, content=干细胞是热点,但是进入临床仍然需要时间和临床疗效验证哦, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=独孤立克, createdTime=Sat May 23 16:53:45 CST 2020, time=2020-05-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1337117, encodeId=d3b5133e1175b, content=<a href='/topic/show?id=715ae8023ea' target=_blank style='color:#2F92EE;'>#细胞衰老#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=78023, encryptionId=715ae8023ea, topicName=细胞衰老)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTIW7uIr5ebYvJohUq0dkkVV05uF9jPpeyCrlcx904mUdMI9UKqpO3bt4GkgYBNdv485qT2NsVE27w/132, createdBy=023c2500122, createdName=ms8543593053280928, createdTime=Fri May 22 07:53:45 CST 2020, time=2020-05-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1557811, encodeId=df9a155e811f8, content=<a href='/topic/show?id=d2601533982' target=_blank style='color:#2F92EE;'>#Research#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15339, encryptionId=d2601533982, topicName=Research)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8e886, createdName=仁者大医, createdTime=Fri May 22 07:53:45 CST 2020, time=2020-05-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1039241, encodeId=ce54103924168, content=机制研究离临床仍然有距离,不过与临床结合思考,仍然有帮助的,不能仅仅是纯临床思维,转化思维同样重要, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=肿肿, createdTime=Wed May 20 19:53:45 CST 2020, time=2020-05-20, status=1, ipAttribution=)]
    2020-12-11 wodejia-dayu
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    2020-11-18 xlxchina
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    2020-05-23 独孤立克

    干细胞是热点,但是进入临床仍然需要时间和临床疗效验证哦

    0

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    2020-05-20 肿肿

    机制研究离临床仍然有距离,不过与临床结合思考,仍然有帮助的,不能仅仅是纯临床思维,转化思维同样重要

    0

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