Nat Commun:药理学家绘制出心肌细胞表观基因组

2014-11-03 佚名 生物谷

近日研究发现,药理学家已经成功地绘制出心肌细胞的表观基因组。他们希望这一发现引起有关先天性心脏病和慢性心力衰竭的新见解。科学家们在《自然通讯》杂志上发表了相关内容。表观基因组是表观遗传机制的总体,表观遗传机制决定细胞中哪些基因是活跃的,哪些基因是不活跃的。内部或环境条件的变化,如营养、压力、或药物,可以留下表观遗传模式。这样的机制在癌症的发展过程中发挥重要作用,但它对心脏病的意义还不太为人所知。

近日研究发现,药理学家已经成功地绘制出心肌细胞的表观基因组。他们希望这一发现引起有关先天性心脏病和慢性心力衰竭的新见解。科学家们在《自然通讯》杂志上发表了相关内容。

表观基因组是表观遗传机制的总体,表观遗传机制决定细胞中哪些基因是活跃的,哪些基因是不活跃的。内部或环境条件的变化,如营养、压力、或药物,可以留下表观遗传模式。这样的机制在癌症的发展过程中发挥重要作用,但它对心脏病的意义还不太为人所知。

心脏在人出生和发育后起着无可替代的作用。它是胚胎发育形成时的第一个器官,并不断用氧气和营养供应着整个身体所需。心肌细胞的细胞核承担着控制基因表达过程中的中央功能。

Ralf Gilsbach博士 和Lutz Hein教授领导的研究小组现在已经开发出一种新颖的方法,他们分离心脏组织中不同类型细胞的心肌细胞的细胞核。科学家们应用下一代DNA测序的方法分离创建高分辨率的DNA甲基化图像的细胞核,该细胞核调整基因活性和所有基因的表观遗传标志一样的最重要的表观遗传机制。这使他们确定在出生过程中打开心脏基因程序的表观遗传开关会引起慢性心脏衰竭。目前研究人员想在微小的组织切片活检中进行表观遗传分析,比如在心导管检查中进行分析。


原始出处:

Gilsbach R1, Preissl S2, Grüning BA3, Schnick T4, Burger L5, Benes V6, Würch A7, Bönisch U7, Günther S8, Backofen R9, Fleischmann BK10, Schübeler D11, Hein L12.Dynamic DNA methylation orchestrates cardiomyocyte development, maturation and disease.Nat Commun. 2014 Oct 22;5:5288. doi: 10.1038/ncomms6288.[pdf free]

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 (5)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=2042788, encodeId=83092042e8818, content=<a href='/topic/show?id=456090243fe' target=_blank style='color:#2F92EE;'>#表观基因#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90243, encryptionId=456090243fe, topicName=表观基因)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2b9b368, createdName=qingrejiedu, createdTime=Thu Jan 08 21:31:00 CST 2015, time=2015-01-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1880348, encodeId=1a91188034894, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, 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 Jun 25 19:31:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2041017, encodeId=71fc204101edc, content=<a href='/topic/show?id=b88990244be' target=_blank style='color:#2F92EE;'>#表观基因组#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90244, encryptionId=b88990244be, topicName=表观基因组)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=21015, createdName=heli0118, createdTime=Wed Aug 05 02:31:00 CST 2015, time=2015-08-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2086736, encodeId=77572086e36d6, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Sat May 09 21:31:00 CST 2015, time=2015-05-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1516162, encodeId=9e401516162ed, content=<a href='/topic/show?id=7e868e9126b' target=_blank style='color:#2F92EE;'>#药理学#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=87912, encryptionId=7e868e9126b, topicName=药理学)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=300b10929379, createdName=ms7019579240139182, createdTime=Wed Nov 05 02:31:00 CST 2014, time=2014-11-05, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=2042788, encodeId=83092042e8818, content=<a href='/topic/show?id=456090243fe' target=_blank style='color:#2F92EE;'>#表观基因#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90243, encryptionId=456090243fe, topicName=表观基因)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2b9b368, createdName=qingrejiedu, createdTime=Thu Jan 08 21:31:00 CST 2015, time=2015-01-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1880348, encodeId=1a91188034894, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, 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 Jun 25 19:31:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2041017, encodeId=71fc204101edc, content=<a href='/topic/show?id=b88990244be' target=_blank style='color:#2F92EE;'>#表观基因组#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90244, encryptionId=b88990244be, topicName=表观基因组)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=21015, createdName=heli0118, createdTime=Wed Aug 05 02:31:00 CST 2015, time=2015-08-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2086736, encodeId=77572086e36d6, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Sat May 09 21:31:00 CST 2015, time=2015-05-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1516162, encodeId=9e401516162ed, content=<a href='/topic/show?id=7e868e9126b' target=_blank style='color:#2F92EE;'>#药理学#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=87912, encryptionId=7e868e9126b, topicName=药理学)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=300b10929379, createdName=ms7019579240139182, createdTime=Wed Nov 05 02:31:00 CST 2014, time=2014-11-05, status=1, ipAttribution=)]
    2015-06-25 liye789132251
  3. [GetPortalCommentsPageByObjectIdResponse(id=2042788, encodeId=83092042e8818, content=<a href='/topic/show?id=456090243fe' target=_blank style='color:#2F92EE;'>#表观基因#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90243, encryptionId=456090243fe, topicName=表观基因)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2b9b368, createdName=qingrejiedu, createdTime=Thu Jan 08 21:31:00 CST 2015, time=2015-01-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1880348, encodeId=1a91188034894, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, 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 Jun 25 19:31:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2041017, encodeId=71fc204101edc, content=<a href='/topic/show?id=b88990244be' target=_blank style='color:#2F92EE;'>#表观基因组#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90244, encryptionId=b88990244be, topicName=表观基因组)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=21015, createdName=heli0118, createdTime=Wed Aug 05 02:31:00 CST 2015, time=2015-08-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2086736, encodeId=77572086e36d6, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Sat May 09 21:31:00 CST 2015, time=2015-05-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1516162, encodeId=9e401516162ed, content=<a href='/topic/show?id=7e868e9126b' target=_blank style='color:#2F92EE;'>#药理学#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=87912, encryptionId=7e868e9126b, topicName=药理学)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=300b10929379, createdName=ms7019579240139182, createdTime=Wed Nov 05 02:31:00 CST 2014, time=2014-11-05, status=1, ipAttribution=)]
  4. [GetPortalCommentsPageByObjectIdResponse(id=2042788, encodeId=83092042e8818, content=<a href='/topic/show?id=456090243fe' target=_blank style='color:#2F92EE;'>#表观基因#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90243, encryptionId=456090243fe, topicName=表观基因)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2b9b368, createdName=qingrejiedu, createdTime=Thu Jan 08 21:31:00 CST 2015, time=2015-01-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1880348, encodeId=1a91188034894, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, 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 Jun 25 19:31:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2041017, encodeId=71fc204101edc, content=<a href='/topic/show?id=b88990244be' target=_blank style='color:#2F92EE;'>#表观基因组#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90244, encryptionId=b88990244be, topicName=表观基因组)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=21015, createdName=heli0118, createdTime=Wed Aug 05 02:31:00 CST 2015, time=2015-08-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2086736, encodeId=77572086e36d6, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Sat May 09 21:31:00 CST 2015, time=2015-05-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1516162, encodeId=9e401516162ed, content=<a href='/topic/show?id=7e868e9126b' target=_blank style='color:#2F92EE;'>#药理学#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=87912, encryptionId=7e868e9126b, topicName=药理学)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=300b10929379, createdName=ms7019579240139182, createdTime=Wed Nov 05 02:31:00 CST 2014, time=2014-11-05, status=1, ipAttribution=)]
    2015-05-09 liuli5079
  5. [GetPortalCommentsPageByObjectIdResponse(id=2042788, encodeId=83092042e8818, content=<a href='/topic/show?id=456090243fe' target=_blank style='color:#2F92EE;'>#表观基因#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90243, encryptionId=456090243fe, topicName=表观基因)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2b9b368, createdName=qingrejiedu, createdTime=Thu Jan 08 21:31:00 CST 2015, time=2015-01-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1880348, encodeId=1a91188034894, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, 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 Jun 25 19:31:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2041017, encodeId=71fc204101edc, content=<a href='/topic/show?id=b88990244be' target=_blank style='color:#2F92EE;'>#表观基因组#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90244, encryptionId=b88990244be, topicName=表观基因组)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=21015, createdName=heli0118, createdTime=Wed Aug 05 02:31:00 CST 2015, time=2015-08-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2086736, encodeId=77572086e36d6, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Sat May 09 21:31:00 CST 2015, time=2015-05-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1516162, encodeId=9e401516162ed, content=<a href='/topic/show?id=7e868e9126b' target=_blank style='color:#2F92EE;'>#药理学#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=87912, encryptionId=7e868e9126b, topicName=药理学)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=300b10929379, createdName=ms7019579240139182, createdTime=Wed Nov 05 02:31:00 CST 2014, time=2014-11-05, status=1, ipAttribution=)]

相关资讯

北京七成人群不知急性心肌梗死的关键治疗手段

  近期几项研究发现,在北京市普通市民中,超过70%的人不知道急性心肌梗死的关键治疗手段(包括溶栓和急诊介入治疗)。   “这就带来很大的问题,比如,医生在确诊患者的病情之后,需要向患者或家属讲述需要采取的治疗措施,讲清楚治疗的必要性和风险,还有费用等问题,以打消他们的顾虑,这样就会延误一段时间。而在心肌梗死的急救时,时间就是心肌,时间就是生命。每延误一分钟,都有心肌细胞在死去。”胡大一指出。

Cell:挑战120年再生医学教条

人们普遍认为,出生后不久哺乳动物中的心肌细胞就停止了增殖,限制了损伤后心脏的自我修复能力。现在,来自埃默里大学医学院等机构的研究人员在《细胞》(Cell)杂志上报告称,在青春期前小鼠中的心肌细胞经历了短暂的爆发性增殖,数量上增加了 40%,使得心脏能够满足快速生长期机体的循环需求。这些研究结果表明,甲状腺激素治疗可以刺激这一过程,提高心脏病患者的心脏再生能力。论文资深作者、埃默里大学医学院 Ahs

PNAS:年轻人心肌细胞可以再生

  波士顿儿童医院研究人员首次发现,年轻人(婴儿、儿童、青少年)能够产生新的心肌细胞。这些发现驳斥了长期公认的观念:出生后人类心肌增长只是单一的现存细胞的扩大(而不是心肌细胞数量的增长)。同时这些研究结果也提高了科学家通过刺激心肌细胞再生治疗损伤心肌的可能性。   该研究发现:年轻人心肌细胞增殖促进了出生后心脏生长。其结果发表在了2013年1月7号至1月11号的最新的《美国国家科学院院刊》网络版