NATURE:30年研究解开衰老和癌症的惊天谜团!

2018-04-29 佚名 转化医学网

端粒是真核细胞染色体末端的特殊结构,而端粒酶则是在细胞中负责端粒的延长的一种酶,其对于保持染色体稳定性和细胞活性起着至关重要的作用。

近日,研究者有了一项重大突破,他们首次通过低温电子显微镜观察到端粒酶的结构,从而为人类抗衰老和抗癌的药物研发铺平了道路。



早在1985年,加州大学伯克利分校的Blackburn,Greider和Jack Szosak就发现了端粒酶,这种酶是将DNA加到染色体的末端,继而延长细胞的寿命。当时在业内掀起了一阵热潮。端粒酶甚至一度被吹捧为“青春之泉”,两位发现者还因此而共同获得了2009年诺贝尔生理学或医学奖。自此,端粒酶的漫漫研究之路开始了!近日,研究者首次通过低温电子显微镜观察到端粒酶的结构,为人类抗衰老和抗癌药物的研发奠定了基础。

该研究以 “该研究以 “Cryo-EM structure of substrate-bound human telomerase holoenzyme”发表在本周的《Nature》 杂志上。

端粒酶与癌症

Kathleen Collins 是端粒酶领域的深度研究者,分子和细胞生物学教授,他钻研此领域已长达26年之久。当他掌握了端粒序列的知识后,他惊讶地发现:每当细胞分裂时,多细胞生物组织中的端粒都会变短。而端粒可以保护DNA链免受磨损,就如同鞋带末端的塑料尖端一样。当细胞不断增殖时,它们会随着每个细胞分裂而下降,这可以让我们免受癌症的侵害。

端粒酶与衰老

研究人员还发现,在人类和其他多细胞生物体中,端粒酶仅在胚胎中表达,而不是在大多数成体细胞中表达。这意味着出生时大多数细胞具有生长和分裂能力,然后会渐渐迈向死亡。科学家认为日渐衰竭的端粒是衰老的主要原因。为此,他们进行了针对性的药物筛选和新药的智能设计,也就是制造药物以激活或阻断端粒酶。

人类端粒酶的首次可视化

在低温电子显微镜下,全酶结构的空间结构模型一览无遗。研究者发现:端粒酶结构包括具有不同功能的两个裂片:负责DNA合成的催化核和的H / ACA核糖核酸。其对于端粒酶生物合成和定位至关重要。端粒酶可以促进染色体末端端粒DNA的合成,以补偿基因组复制过程中端粒的丢失。这是人类端粒酶的首次可视化,鉴于其调控涉及癌症和衰老两大重要领域,无疑是其治疗领域的重大突破。虽然未能观察到更细微的结构,但已然为研究药物的潜在靶点提供了足够的信息。

研究者表示:以往人类端粒酶图像的最高分辨率只有30埃,而使用也冷冻电子显微镜只有约7到8埃的分辨率,而现今用低温电子显微镜能够看到全部的11个蛋白亚基,当端粒酶与蛋白融合在一起的时刻着实让人惊叹。我们正在努力将分辨率提高到3到4埃,这大概相当于两个碳原子的大小且足以用于药物设计。”

研究并非一帆风顺,关卡重重!

该研究遭遇到瓶颈,如何获得这种复杂分子的纯样品成了研究人员亟待解决的问题。因为端粒酶参与合成RNA主链,而RNA主链又由六种不同类型的蛋白质组成。这些蛋白质在染色体末端添加DNA时会四处移动。世界各地的实验室探讨不休,该酶到底是单独运作还是作为连体运作?它如何与蛋白质协同参与合成RNA主链?

值得注意的是!如果这些问题没有达成共识,那么设计靶向分子药物的历程将会举步维艰,可能会破坏端粒酶活性,也可能会重新启动端粒酶,带动机体的细胞分裂。但是端粒酶的可视化无疑给它的研究添加了浓墨重彩的一笔,相信研究者定会克服重重阻碍,顺利破解人类癌症和衰老的基因密码!

原始出处:


Thi Hoang Duong Nguyen, Jane Tam, Robert A. Wu, Basil J. Greber, Daniel Toso, Eva Nogales, Kathleen Collins. Cryo-EM structure of substrate-bound human telomerase holoenzyme. Nature, 2018; DOI: 10.1038/s41586-018-0062-x

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    2018-10-02 liye789132251
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    2018-06-19 刘煜

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  3. 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CST 2018, time=2018-06-13, status=1, ipAttribution=)]
    2018-06-17 刘煜

    阅读谢谢分享

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1882996, encodeId=32d018829967d, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Tue Oct 02 08:42:00 CST 2018, time=2018-10-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=325318, encodeId=313d32531865, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Tue Jun 19 08:14:45 CST 2018, time=2018-06-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324805, encodeId=d5df324805b5, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Sun Jun 17 06:18:30 CST 2018, time=2018-06-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324534, encodeId=e90732453417, content=阅读谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Sat Jun 16 05:54:44 CST 2018, time=2018-06-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324300, encodeId=004e32430042, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Fri Jun 15 06:17:28 CST 2018, time=2018-06-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323968, encodeId=ddbf32396805, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Thu Jun 14 05:51:16 CST 2018, time=2018-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323720, encodeId=6066323e2033, content=阅读谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:46 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323719, encodeId=9d60323e19b3, content=谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:37 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323717, encodeId=8b62323e170e, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:33 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323716, encodeId=7fb1323e1634, content=谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:30 CST 2018, time=2018-06-13, status=1, ipAttribution=)]
    2018-06-16 刘煜

    阅读谢谢分享谢谢

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1882996, encodeId=32d018829967d, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Tue Oct 02 08:42:00 CST 2018, time=2018-10-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=325318, encodeId=313d32531865, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Tue Jun 19 08:14:45 CST 2018, time=2018-06-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324805, encodeId=d5df324805b5, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Sun Jun 17 06:18:30 CST 2018, time=2018-06-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324534, encodeId=e90732453417, content=阅读谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Sat Jun 16 05:54:44 CST 2018, time=2018-06-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324300, encodeId=004e32430042, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Fri Jun 15 06:17:28 CST 2018, time=2018-06-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323968, encodeId=ddbf32396805, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Thu Jun 14 05:51:16 CST 2018, time=2018-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323720, encodeId=6066323e2033, content=阅读谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:46 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323719, encodeId=9d60323e19b3, content=谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:37 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323717, encodeId=8b62323e170e, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:33 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323716, encodeId=7fb1323e1634, content=谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:30 CST 2018, time=2018-06-13, status=1, ipAttribution=)]
    2018-06-15 刘煜

    阅读谢谢分享

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1882996, encodeId=32d018829967d, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Tue Oct 02 08:42:00 CST 2018, time=2018-10-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=325318, encodeId=313d32531865, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Tue Jun 19 08:14:45 CST 2018, time=2018-06-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324805, encodeId=d5df324805b5, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Sun Jun 17 06:18:30 CST 2018, time=2018-06-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324534, encodeId=e90732453417, content=阅读谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Sat Jun 16 05:54:44 CST 2018, time=2018-06-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324300, encodeId=004e32430042, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Fri Jun 15 06:17:28 CST 2018, time=2018-06-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323968, encodeId=ddbf32396805, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Thu Jun 14 05:51:16 CST 2018, time=2018-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323720, encodeId=6066323e2033, content=阅读谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:46 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323719, encodeId=9d60323e19b3, content=谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:37 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323717, encodeId=8b62323e170e, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:33 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323716, encodeId=7fb1323e1634, content=谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:30 CST 2018, time=2018-06-13, status=1, ipAttribution=)]
    2018-06-14 刘煜

    阅读谢谢分享

    0

  7. [GetPortalCommentsPageByObjectIdResponse(id=1882996, encodeId=32d018829967d, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Tue Oct 02 08:42:00 CST 2018, time=2018-10-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=325318, encodeId=313d32531865, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Tue Jun 19 08:14:45 CST 2018, time=2018-06-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324805, encodeId=d5df324805b5, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Sun Jun 17 06:18:30 CST 2018, time=2018-06-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324534, encodeId=e90732453417, content=阅读谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Sat Jun 16 05:54:44 CST 2018, time=2018-06-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324300, encodeId=004e32430042, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Fri Jun 15 06:17:28 CST 2018, time=2018-06-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323968, encodeId=ddbf32396805, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Thu Jun 14 05:51:16 CST 2018, time=2018-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323720, encodeId=6066323e2033, content=阅读谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:46 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323719, encodeId=9d60323e19b3, content=谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:37 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323717, encodeId=8b62323e170e, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:33 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323716, encodeId=7fb1323e1634, content=谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:30 CST 2018, time=2018-06-13, status=1, ipAttribution=)]
    2018-06-13 刘煜

    阅读谢谢分享谢谢

    0

  8. [GetPortalCommentsPageByObjectIdResponse(id=1882996, encodeId=32d018829967d, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Tue Oct 02 08:42:00 CST 2018, time=2018-10-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=325318, encodeId=313d32531865, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Tue Jun 19 08:14:45 CST 2018, time=2018-06-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324805, encodeId=d5df324805b5, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Sun Jun 17 06:18:30 CST 2018, time=2018-06-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324534, encodeId=e90732453417, content=阅读谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Sat Jun 16 05:54:44 CST 2018, time=2018-06-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324300, encodeId=004e32430042, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Fri Jun 15 06:17:28 CST 2018, time=2018-06-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323968, encodeId=ddbf32396805, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Thu Jun 14 05:51:16 CST 2018, time=2018-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323720, encodeId=6066323e2033, content=阅读谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:46 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323719, encodeId=9d60323e19b3, content=谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:37 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323717, encodeId=8b62323e170e, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:33 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323716, encodeId=7fb1323e1634, content=谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:30 CST 2018, time=2018-06-13, status=1, ipAttribution=)]
    2018-06-13 刘煜

    谢谢分享谢谢

    0

  9. [GetPortalCommentsPageByObjectIdResponse(id=1882996, encodeId=32d018829967d, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Tue Oct 02 08:42:00 CST 2018, time=2018-10-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=325318, encodeId=313d32531865, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Tue Jun 19 08:14:45 CST 2018, time=2018-06-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324805, encodeId=d5df324805b5, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Sun Jun 17 06:18:30 CST 2018, time=2018-06-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324534, encodeId=e90732453417, content=阅读谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Sat Jun 16 05:54:44 CST 2018, time=2018-06-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324300, encodeId=004e32430042, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Fri Jun 15 06:17:28 CST 2018, time=2018-06-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323968, encodeId=ddbf32396805, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Thu Jun 14 05:51:16 CST 2018, time=2018-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323720, encodeId=6066323e2033, content=阅读谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:46 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323719, encodeId=9d60323e19b3, content=谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:37 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323717, encodeId=8b62323e170e, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:33 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323716, encodeId=7fb1323e1634, content=谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:30 CST 2018, time=2018-06-13, status=1, ipAttribution=)]
    2018-06-13 刘煜

    阅读谢谢分享

    0

  10. [GetPortalCommentsPageByObjectIdResponse(id=1882996, encodeId=32d018829967d, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Tue Oct 02 08:42:00 CST 2018, time=2018-10-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=325318, encodeId=313d32531865, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Tue Jun 19 08:14:45 CST 2018, time=2018-06-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324805, encodeId=d5df324805b5, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Sun Jun 17 06:18:30 CST 2018, time=2018-06-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324534, encodeId=e90732453417, content=阅读谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Sat Jun 16 05:54:44 CST 2018, time=2018-06-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=324300, encodeId=004e32430042, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Fri Jun 15 06:17:28 CST 2018, time=2018-06-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323968, encodeId=ddbf32396805, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Thu Jun 14 05:51:16 CST 2018, time=2018-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323720, encodeId=6066323e2033, content=阅读谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:46 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323719, encodeId=9d60323e19b3, content=谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:37 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323717, encodeId=8b62323e170e, content=阅读谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:33 CST 2018, time=2018-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=323716, encodeId=7fb1323e1634, content=谢谢分享谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2017/04/21/72142930668371951a41ef4ea4b233e6.jpg, createdBy=dcbc1715228, createdName=刘煜, createdTime=Wed Jun 13 06:02:30 CST 2018, time=2018-06-13, status=1, ipAttribution=)]
    2018-06-13 刘煜

    谢谢分享谢谢

    0

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衰老与细胞成分的组织水平变化有关,这些变化会增加疾病的易感性。来自挪威、瑞士和美国的研究人员最新发现乳房组织中与年龄有关的差异,证实这些差异会增加年长女性患乳腺癌的风险。

Women''s Midlife Health:衰老缓解压力?“中年危机”或许没那么严重

相比于青年,中年要处理的问题更复杂,所以衍生出“中年危机”的说法。但是,一项最新研究却给出不同的结论:随着年龄增长,女性的压力感会降低。

Cell Metab:颠覆认知!衰老会促进癌症复发!

过去的理论认为,细胞衰老主要发挥抑制肿瘤发生作用。然而,在最近Nature的一项研究中,Milanovic等人的研究结果挑战了这种传统观点,该研究结果表明衰老可以促进癌症再发和增强肿瘤侵袭性。 这一发现表明抗衰老药物或许可以应用于抗肿瘤治疗当中。