Nature封面:重编程技术逆转视神经衰老时钟

2020-12-04 haibei MedSci原创

异位表达的重编程转录因子在小鼠视网膜神经节细胞恢复了年轻的DNA甲基化模式和转录组,促进损伤后轴突再生,并扭转青光眼小鼠模型和老年小鼠的视力损失。

表观遗传景观的特征,最初被用来解释胚胎发育。而现在其越来越多地被视为与生命后期阶段相关。衰老是一个退行性过程,会导致组织功能障碍和死亡。一个可能的老化的原因是表观遗传噪音的积累,破坏基因表达模式,导致组织功能和再生能力的下降。

DNA甲基化模式随着时间的推移有所变化,形成了老化时钟的基础,但至今为止,我们并不清楚老年个体是否保留恢复年轻的模式所需的信息,如果是这样,这可能是改善老年组织功能的一个潜在疗法。

我们已知,随着时间的推移,中枢神经系统(CNS)失去功能和再生能力。最近,研究人员在Nature发文,其使用眼睛作为中枢神经系统的一个组织模型,异位表达的重编程转录因子Oct4(也称为Pou5f1),Sox2和Klf4基因(OSK)在小鼠视网膜神经节细胞恢复了年轻的DNA甲基化模式和转录组,促进损伤后轴突再生,并扭转青光眼小鼠模型和老年小鼠的视力损失。

OSK诱导的重编程对轴突再生和视觉的有益作用需要DNA去甲基化酶TET1和TET2。

这些数据表明,哺乳动物组织保留了年轻的表观遗传信息记录,其部分由DNA甲基化编码。这可用于改善组织功能和促进体内再生。

 

原始出处:

Yuancheng Lu et al. Reprogramming to recover youthful epigenetic information and restore vision. Nature (2020). 

 

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    2021-03-04 liye789132251
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    2021-05-24 gj0740
  3. [GetPortalCommentsPageByObjectIdResponse(id=1884834, encodeId=5cc8188483438, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Thu Mar 04 08:47:30 CST 2021, time=2021-03-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1667011, encodeId=0ce5166e01187, content=<a href='/topic/show?id=5fda90e061e' target=_blank style='color:#2F92EE;'>#视神经#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90706, encryptionId=5fda90e061e, topicName=视神经)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=14db26078051, createdName=gj0740, createdTime=Mon May 24 10:47:30 CST 2021, time=2021-05-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=906206, encodeId=2f8c906206d3, content=一大进步, beContent=null, objectType=article, channel=null, level=null, likeNumber=94, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7e462271105, createdName=shiyanqing, createdTime=Wed Dec 09 00:18:48 CST 2020, time=2020-12-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=905209, encodeId=a9c79052094d, content=秦始皇:给朕研究!, beContent=null, objectType=article, channel=null, level=null, likeNumber=122, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210315/480e12f811f44bc39b347d2521d56e86/67d0e6d503124ea685205b567af3dffd.jpg, createdBy=f9435296193, createdName=Baodongxu, createdTime=Sat Dec 05 16:34:00 CST 2020, time=2020-12-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=904905, encodeId=433590490551, content=<a href='/topic/show?id=4c239032154' target=_blank style='color:#2F92EE;'>#衰老#</a>这是首次逆转了衰老的进程。核心是在以前的四因子基础上,减掉c-myc后,变成三因子系统,Oct4(也称为Pou5f1),Sox2和Klf4,这样具有逆转衰老作用,且不致癌,因此,是理想的选择。, beContent=null, objectType=article, channel=null, level=null, likeNumber=2, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90321, encryptionId=4c239032154, topicName=衰老)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20211210/ede9c51184aa4f54ae6c1164cfb8eeac/967dbf3eff2943c7bf3ccfec3a776ab0.JPG, createdBy=a33789389, createdName=lifefamily, createdTime=Fri Dec 04 16:47:39 CST 2020, time=2020-12-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=904897, encodeId=f75690489e61, content=一个可能的老化的原因是表观遗传噪音的积累,破坏基因表达模式,导致组织功能和再生能力的下降。, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20201120/5008534db22c474a844fbd107ff83af2/d3e20fc133b542208ff15e7f2b575329.jpg, createdBy=c7015311102, createdName=Jessie Zhang, createdTime=Fri Dec 04 16:32:01 CST 2020, time=2020-12-04, status=1, ipAttribution=)]
    2020-12-09 shiyanqing

    一大进步

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1884834, encodeId=5cc8188483438, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Thu Mar 04 08:47:30 CST 2021, time=2021-03-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1667011, encodeId=0ce5166e01187, content=<a href='/topic/show?id=5fda90e061e' target=_blank style='color:#2F92EE;'>#视神经#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90706, encryptionId=5fda90e061e, topicName=视神经)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=14db26078051, createdName=gj0740, createdTime=Mon May 24 10:47:30 CST 2021, time=2021-05-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=906206, encodeId=2f8c906206d3, content=一大进步, beContent=null, objectType=article, channel=null, level=null, likeNumber=94, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7e462271105, createdName=shiyanqing, createdTime=Wed Dec 09 00:18:48 CST 2020, time=2020-12-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=905209, encodeId=a9c79052094d, content=秦始皇:给朕研究!, beContent=null, objectType=article, channel=null, level=null, likeNumber=122, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210315/480e12f811f44bc39b347d2521d56e86/67d0e6d503124ea685205b567af3dffd.jpg, createdBy=f9435296193, createdName=Baodongxu, createdTime=Sat Dec 05 16:34:00 CST 2020, time=2020-12-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=904905, encodeId=433590490551, content=<a href='/topic/show?id=4c239032154' target=_blank style='color:#2F92EE;'>#衰老#</a>这是首次逆转了衰老的进程。核心是在以前的四因子基础上,减掉c-myc后,变成三因子系统,Oct4(也称为Pou5f1),Sox2和Klf4,这样具有逆转衰老作用,且不致癌,因此,是理想的选择。, beContent=null, objectType=article, channel=null, level=null, likeNumber=2, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90321, encryptionId=4c239032154, topicName=衰老)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20211210/ede9c51184aa4f54ae6c1164cfb8eeac/967dbf3eff2943c7bf3ccfec3a776ab0.JPG, createdBy=a33789389, createdName=lifefamily, createdTime=Fri Dec 04 16:47:39 CST 2020, time=2020-12-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=904897, encodeId=f75690489e61, content=一个可能的老化的原因是表观遗传噪音的积累,破坏基因表达模式,导致组织功能和再生能力的下降。, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20201120/5008534db22c474a844fbd107ff83af2/d3e20fc133b542208ff15e7f2b575329.jpg, createdBy=c7015311102, createdName=Jessie Zhang, createdTime=Fri Dec 04 16:32:01 CST 2020, time=2020-12-04, status=1, ipAttribution=)]
    2020-12-05 Baodongxu

    秦始皇:给朕研究!

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1884834, encodeId=5cc8188483438, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Thu Mar 04 08:47:30 CST 2021, time=2021-03-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1667011, encodeId=0ce5166e01187, content=<a href='/topic/show?id=5fda90e061e' target=_blank style='color:#2F92EE;'>#视神经#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90706, encryptionId=5fda90e061e, topicName=视神经)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=14db26078051, createdName=gj0740, createdTime=Mon May 24 10:47:30 CST 2021, time=2021-05-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=906206, encodeId=2f8c906206d3, content=一大进步, beContent=null, objectType=article, channel=null, level=null, likeNumber=94, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7e462271105, createdName=shiyanqing, createdTime=Wed Dec 09 00:18:48 CST 2020, time=2020-12-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=905209, encodeId=a9c79052094d, content=秦始皇:给朕研究!, beContent=null, objectType=article, channel=null, level=null, likeNumber=122, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210315/480e12f811f44bc39b347d2521d56e86/67d0e6d503124ea685205b567af3dffd.jpg, createdBy=f9435296193, createdName=Baodongxu, createdTime=Sat Dec 05 16:34:00 CST 2020, time=2020-12-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=904905, encodeId=433590490551, content=<a href='/topic/show?id=4c239032154' target=_blank style='color:#2F92EE;'>#衰老#</a>这是首次逆转了衰老的进程。核心是在以前的四因子基础上,减掉c-myc后,变成三因子系统,Oct4(也称为Pou5f1),Sox2和Klf4,这样具有逆转衰老作用,且不致癌,因此,是理想的选择。, beContent=null, objectType=article, channel=null, level=null, likeNumber=2, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90321, encryptionId=4c239032154, topicName=衰老)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20211210/ede9c51184aa4f54ae6c1164cfb8eeac/967dbf3eff2943c7bf3ccfec3a776ab0.JPG, createdBy=a33789389, createdName=lifefamily, createdTime=Fri Dec 04 16:47:39 CST 2020, time=2020-12-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=904897, encodeId=f75690489e61, content=一个可能的老化的原因是表观遗传噪音的积累,破坏基因表达模式,导致组织功能和再生能力的下降。, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20201120/5008534db22c474a844fbd107ff83af2/d3e20fc133b542208ff15e7f2b575329.jpg, createdBy=c7015311102, createdName=Jessie Zhang, createdTime=Fri Dec 04 16:32:01 CST 2020, time=2020-12-04, status=1, ipAttribution=)]
    2020-12-04 lifefamily

    #衰老#这是首次逆转了衰老的进程。核心是在以前的四因子基础上,减掉c-myc后,变成三因子系统,Oct4(也称为Pou5f1),Sox2和Klf4,这样具有逆转衰老作用,且不致癌,因此,是理想的选择。

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1884834, encodeId=5cc8188483438, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Thu Mar 04 08:47:30 CST 2021, time=2021-03-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1667011, encodeId=0ce5166e01187, content=<a href='/topic/show?id=5fda90e061e' target=_blank style='color:#2F92EE;'>#视神经#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90706, encryptionId=5fda90e061e, topicName=视神经)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=14db26078051, createdName=gj0740, createdTime=Mon May 24 10:47:30 CST 2021, time=2021-05-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=906206, encodeId=2f8c906206d3, content=一大进步, beContent=null, objectType=article, channel=null, level=null, likeNumber=94, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7e462271105, createdName=shiyanqing, createdTime=Wed Dec 09 00:18:48 CST 2020, time=2020-12-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=905209, encodeId=a9c79052094d, content=秦始皇:给朕研究!, beContent=null, objectType=article, channel=null, level=null, likeNumber=122, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210315/480e12f811f44bc39b347d2521d56e86/67d0e6d503124ea685205b567af3dffd.jpg, createdBy=f9435296193, createdName=Baodongxu, createdTime=Sat Dec 05 16:34:00 CST 2020, time=2020-12-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=904905, encodeId=433590490551, content=<a href='/topic/show?id=4c239032154' target=_blank style='color:#2F92EE;'>#衰老#</a>这是首次逆转了衰老的进程。核心是在以前的四因子基础上,减掉c-myc后,变成三因子系统,Oct4(也称为Pou5f1),Sox2和Klf4,这样具有逆转衰老作用,且不致癌,因此,是理想的选择。, beContent=null, objectType=article, channel=null, level=null, likeNumber=2, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90321, encryptionId=4c239032154, topicName=衰老)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20211210/ede9c51184aa4f54ae6c1164cfb8eeac/967dbf3eff2943c7bf3ccfec3a776ab0.JPG, createdBy=a33789389, createdName=lifefamily, createdTime=Fri Dec 04 16:47:39 CST 2020, time=2020-12-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=904897, encodeId=f75690489e61, content=一个可能的老化的原因是表观遗传噪音的积累,破坏基因表达模式,导致组织功能和再生能力的下降。, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20201120/5008534db22c474a844fbd107ff83af2/d3e20fc133b542208ff15e7f2b575329.jpg, createdBy=c7015311102, createdName=Jessie Zhang, createdTime=Fri Dec 04 16:32:01 CST 2020, time=2020-12-04, status=1, ipAttribution=)]
    2020-12-04 Jessie Zhang

    一个可能的老化的原因是表观遗传噪音的积累,破坏基因表达模式,导致组织功能和再生能力的下降。

    0

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