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Circulation:HIPK2通过细胞外信号调节激酶信号维持正常心脏功能

2019-12-02 MedSci MedSci原创

心肌激酶在心力衰竭的发生发展中起着重要作用,是潜在的治疗靶点。但只有一小部分的心脏激肽被研究过。为了鉴别与心力衰竭有关的新型心激酶,研究人员通过整合转录组学和生物信息学分析,发现同源域相互作用蛋白激酶2 (HIPK2)是一种新的候选激酶。但HIPK2在心脏中的作用尚不清楚。为了确定HIPK2在心脏中的作用,研究人员建立了心肌细胞(CM)特异性敲除HIPK2的杂合型小鼠。并采用携带心肌特异性组成活性

心肌激酶在心力衰竭的发生发展中起着重要作用,是潜在的治疗靶点。但只有一小部分的心脏激肽被研究过。为了鉴别与心力衰竭有关的新型心激酶,研究人员通过整合转录组学和生物信息学分析,发现同源域相互作用蛋白激酶2 (HIPK2)是一种新的候选激酶。但HIPK2在心脏中的作用尚不清楚。

为了确定HIPK2在心脏中的作用,研究人员建立了心肌细胞(CM)特异性敲除HIPK2的杂合型小鼠。并采用携带心肌特异性组成活性MEK1 的9型腺病毒血清(TnT-MEK1-CA),来挽救CM-HIPK2敲除小鼠的心功能障碍。

通过多种HIPK2功能丧失性小鼠模型,研究人员证明了CMs中HIPK2的降低会导致心功能障碍,提示HIPK2与心力衰竭中有因果关系。需注意的是,HIPK2基因敲除小鼠的心功能障碍是随着年龄的增长而发生的,而不是在发育过程中发生的。此外,CM-HIPK2敲除小鼠和CM-HIPK2杂合小鼠在心功能上表现出CM-HIPK2的基因剂量-响应关系。与未衰竭心肌相比,HIPK2在人晚期缺血性心肌病心脏中的表达显著降低,提示HIPK2在心脏生物学中具有一定临床意义。体外研究证实了体内结果。特别是腺病毒介导的HIPK2过表达在基础状态下抑制了心力衰竭标志物NPPA和NPPB的表达,并抑制了苯肾上腺素诱导的病理基因表达。一系列的机制研究揭示了HIPK2缺陷心脏细胞外信号调节激酶1/2信号受损。体内拯救实验几乎消除了敲除小鼠的有害表型,表明细胞外信号调节激酶信号通路受损是导致CM-HIPK2敲除小鼠心脏有害表型的关键因素。

综上所述,本研究表明CM-HIPK2需通过细胞外信号调节激酶信号来维持正常的心脏功能。

原始出处:

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    2020-07-15 passed water
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    2019-12-08 lifeng6035

    学习

    0

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  5. [GetPortalCommentsPageByObjectIdResponse(id=2054939, encodeId=3296205493928, content=<a href='/topic/show?id=59f888547c' target=_blank style='color:#2F92EE;'>#HIPK2#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=8854, encryptionId=59f888547c, topicName=HIPK2)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdqq.qlogo.cn/qqapp/101296147/72D57F5B3E12B2BB53D6BD015D14DCD6/100, createdBy=a92e2500162, createdName=passed water, createdTime=Wed Jul 15 17:08:00 CST 2020, time=2020-07-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1804999, encodeId=2ff31804999aa, content=<a href='/topic/show?id=e7efe7868a7' target=_blank style='color:#2F92EE;'>#细胞外信号#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=95, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77868, encryptionId=e7efe7868a7, topicName=细胞外信号)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ed25376, createdName=gdsun, createdTime=Fri Dec 20 17:08:00 CST 2019, time=2019-12-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=376704, encodeId=4ff73e670453, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=109, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=47822969005, createdName=lifeng6035, createdTime=Sun Dec 08 19:26:08 CST 2019, time=2019-12-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1413783, encodeId=36f31413e83a0, content=<a href='/topic/show?id=3a96514459f' target=_blank style='color:#2F92EE;'>#心脏功能#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=92, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=51445, encryptionId=3a96514459f, topicName=心脏功能)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8a293020977, createdName=tidiq, createdTime=Wed Dec 04 14:08:00 CST 2019, time=2019-12-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1496079, encodeId=bdfa14960e9a9, content=<a href='/topic/show?id=9c516685eea' target=_blank style='color:#2F92EE;'>#激酶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=66857, encryptionId=9c516685eea, topicName=激酶)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=73449239400, createdName=redcrab, createdTime=Wed Dec 04 14:08:00 CST 2019, time=2019-12-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=376340, encodeId=db4f3e6340ce, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=122, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/12/23/2f51002e1349ccda5be11c1eea1e1e60.jpg, createdBy=a22097948, createdName=天地飞扬, createdTime=Tue Dec 03 17:07:54 CST 2019, time=2019-12-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=376324, encodeId=2fea3e632467, content=学习了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20220115/46bcf39c32de4aa6b45c5f9d66c8ee77/6cb4a20c55bb4b7691122f47747bfca2.jpg, createdBy=9dad1662329, createdName=1ddf0692m34(暂无匿称), createdTime=Tue Dec 03 12:43:25 CST 2019, time=2019-12-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=376318, encodeId=f0923e631898, content=好, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=bbc11488193, createdName=thm112988, createdTime=Tue Dec 03 07:15:22 CST 2019, time=2019-12-03, status=1, ipAttribution=)]
    2019-12-04 redcrab
  6. [GetPortalCommentsPageByObjectIdResponse(id=2054939, encodeId=3296205493928, content=<a href='/topic/show?id=59f888547c' target=_blank style='color:#2F92EE;'>#HIPK2#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=8854, encryptionId=59f888547c, topicName=HIPK2)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdqq.qlogo.cn/qqapp/101296147/72D57F5B3E12B2BB53D6BD015D14DCD6/100, createdBy=a92e2500162, createdName=passed water, createdTime=Wed Jul 15 17:08:00 CST 2020, time=2020-07-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1804999, encodeId=2ff31804999aa, content=<a href='/topic/show?id=e7efe7868a7' target=_blank style='color:#2F92EE;'>#细胞外信号#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=95, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77868, encryptionId=e7efe7868a7, topicName=细胞外信号)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ed25376, createdName=gdsun, createdTime=Fri Dec 20 17:08:00 CST 2019, time=2019-12-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=376704, encodeId=4ff73e670453, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=109, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=47822969005, createdName=lifeng6035, createdTime=Sun Dec 08 19:26:08 CST 2019, time=2019-12-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1413783, encodeId=36f31413e83a0, content=<a href='/topic/show?id=3a96514459f' target=_blank style='color:#2F92EE;'>#心脏功能#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=92, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=51445, encryptionId=3a96514459f, topicName=心脏功能)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8a293020977, createdName=tidiq, createdTime=Wed Dec 04 14:08:00 CST 2019, time=2019-12-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1496079, encodeId=bdfa14960e9a9, content=<a href='/topic/show?id=9c516685eea' target=_blank style='color:#2F92EE;'>#激酶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=66857, encryptionId=9c516685eea, topicName=激酶)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=73449239400, createdName=redcrab, createdTime=Wed Dec 04 14:08:00 CST 2019, time=2019-12-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=376340, encodeId=db4f3e6340ce, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=122, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/12/23/2f51002e1349ccda5be11c1eea1e1e60.jpg, createdBy=a22097948, createdName=天地飞扬, createdTime=Tue Dec 03 17:07:54 CST 2019, time=2019-12-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=376324, encodeId=2fea3e632467, content=学习了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20220115/46bcf39c32de4aa6b45c5f9d66c8ee77/6cb4a20c55bb4b7691122f47747bfca2.jpg, createdBy=9dad1662329, createdName=1ddf0692m34(暂无匿称), createdTime=Tue Dec 03 12:43:25 CST 2019, time=2019-12-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=376318, encodeId=f0923e631898, content=好, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=bbc11488193, createdName=thm112988, createdTime=Tue Dec 03 07:15:22 CST 2019, time=2019-12-03, status=1, ipAttribution=)]
    2019-12-03 天地飞扬

    学习

    0

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    2019-12-03 1ddf0692m34(暂无匿称)

    学习了,谢谢分享

    0

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    2019-12-03 thm112988

    0

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