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Cell Death Differ+Cardiovasc Res:发现血小板寿命与功能调控新机制

2019-02-13 MedSci 北京大学

近日,北京大学分子医学研究所马淇博士与合作者分别在Cell Death and Differentation(CDD)和Cardiovascular Research(CVR)上发表最新研究成果,鉴定了一个调控血小板寿命和功能的新分子,并研究了其调控机制。

近日,北京大学分子医学研究所马淇博士与合作者分别在Cell Death and Differentation(CDD)和Cardiovascular Research(CVR)上发表最新研究成果,鉴定了一个调控血小板寿命和功能的新分子,并研究了其调控机制。

血小板对机体的止血功能和血栓形成至关重要,主要由骨髓中巨核细胞脱落的胞浆碎片组成。线粒体作为细胞中能量供应的细胞器,兼具信号转导中心的双重功能,因此,线粒体对于血小板这类没有细胞核的细胞尤为重要。

作者首先鉴定了一个全新的线粒体蛋白FUNDC2。实验证实FUNDC2定位在线粒体外膜,其N端的功能域可以特异性的结合磷脂酰肌醇三磷酸(PIP3)。FUNDC2招募PIP3在线粒体上富集,并激活线粒体上的AKT信号通路。进一步的研究发现FUNDC2通过AKT调控血小板的凋亡和寿命,兼具调控血小板聚集的功能。FUNDC2敲除的小鼠表现出血小板数量减少和血小板功能缺陷,在凝血和血栓形成中均有障碍。

此项研究拓展了血小板功能调控领域的研究方向,并为针对血小板的药物开发和治疗提供了新的视野。


线粒体蛋白FUNDC2调控血小板寿命与功能的分子机制:(1)FUNDC2调控血小板生存的信号通路;(2)FUNDC2激活血小板的信号通路。

原始出处:


2.Ma Q,et al.FUNDC2 regulates platelet activation through AKT/GSK-3β/cGMP axis.Cardiovasc Res. 2018 Dec 21.

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  2. [GetPortalCommentsPageByObjectIdResponse(id=1871149, encodeId=650a18e1149a7, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Thu Aug 01 07:41:00 CST 2019, time=2019-08-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1961426, encodeId=d85f196142684, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Mon Apr 15 13:41:00 CST 2019, time=2019-04-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1938916, encodeId=dc7619389166c, content=<a href='/topic/show?id=1c292818fd' target=_blank style='color:#2F92EE;'>#ASC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2818, encryptionId=1c292818fd, topicName=ASC)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=74808, createdName=quxin068, createdTime=Wed Dec 11 12:41:00 CST 2019, time=2019-12-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1784215, encodeId=da4b1e8421554, content=<a href='/topic/show?id=f01159527d' target=_blank style='color:#2F92EE;'>#Differ#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=85, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5952, encryptionId=f01159527d, topicName=Differ)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d784426, createdName=isabellayj, createdTime=Wed Jun 26 11:41:00 CST 2019, time=2019-06-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1531463, encodeId=61b41531463f9, content=<a href='/topic/show?id=770e5e9457' target=_blank style='color:#2F92EE;'>#Death#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5794, encryptionId=770e5e9457, topicName=Death)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=32e312278742, createdName=cy0328, createdTime=Fri Feb 15 10:41:00 CST 2019, time=2019-02-15, status=1, ipAttribution=)]
    2019-04-15 维他命
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    2019-12-11 quxin068
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    2019-06-26 isabellayj
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    2019-02-15 cy0328

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