AGING CELL:衰老碎裂线粒体,促进生殖干细胞的流失。

2020-08-20 MedSci原创 MedSci原创

已有的研究显示,线粒体动态的变化(融合和裂变)发生在干细胞分化的过程中,然而,这种现象在组织老化中的作用仍然不清楚。

已有的研究显示,线粒体动态的变化(融合和裂变)发生在干细胞分化的过程中,然而,这种现象在组织老化中的作用仍然不清楚。

最近,研究人员发现,线粒体动态在果蝇卵巢生殖干细胞(GSCs)老化过程中转向裂变,这种转变有助于老化相关的GSC损失。

研究人员发现,随着GSCs的衰老,线粒体碎片和线粒体裂变调节因子Dynamin相关蛋白(Drp1)的表达都会增加,同时线粒体膜电位降低。

此外,阻止GSCs中的线粒体融合会导致线粒体的高度碎片化和去极化,BMP干细胞信号传导减少,脂肪酸代谢受损,GSC丧失。

相反,迫使线粒体融合可以促进GSC附着在基质上。重要的是,通过抑制Drp1的表达以防止线粒体裂变或用雷帕霉素治疗,都可以帮助维持老化的GSCs,雷帕霉素已知通过抑制TOR来促进自噬。

总的来说,该研究结果表明,线粒体动力学在生理老化过程中发生改变,通过干细胞信号传导、基质接触和细胞代谢的协调变化影响干细胞稳态。这种影响也可能与其他干细胞类型和衰老诱导的组织退化高度相关。

 

原始出处:

Oyundari Amartuvshin et al. Aging shifts mitochondrial dynamics toward fission to promote germline stem cell loss, AGING CELL (2020). DOI: https://doi.org/10.1111/acel.13191

 

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  1. [GetPortalCommentsPageByObjectIdResponse(id=1871931, encodeId=f39018e193133, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Wed Sep 16 16:12:41 CST 2020, time=2020-09-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1962230, encodeId=7dcf196223081, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=395f25, createdName=爆笑小医, createdTime=Tue Nov 17 15:12:41 CST 2020, time=2020-11-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=811471, encodeId=03008114e197, content=<a href='/topic/show?id=4c239032154' target=_blank style='color:#2F92EE;'>#衰老#</a>,实际上细胞内各个亚细胞器官的衰老,包括<a href='/topic/show?id=4c3fe75743e' target=_blank style='color:#2F92EE;'>#线粒体#</a>,<a href='/topic/show?id=a1353053597' target=_blank style='color:#2F92EE;'>#内质网#</a>,<a href='/topic/show?id=36a8102336cb' target=_blank style='color:#2F92EE;'>#高尔基体#</a>,<a href='/topic/show?id=d6f96212e23' target=_blank style='color:#2F92EE;'>#核糖体#</a>等等,在组织学层面,是各个组织器官的干细胞的死亡,包括<a href='/topic/show?id=b0026908545' target=_blank style='color:#2F92EE;'>#生殖干细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=249, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90321, encryptionId=4c239032154, topicName=衰老), TopicDto(id=77574, encryptionId=4c3fe75743e, topicName=线粒体), TopicDto(id=30535, encryptionId=a1353053597, topicName=内质网), TopicDto(id=102336, encryptionId=36a8102336cb, topicName=高尔基体), TopicDto(id=62127, encryptionId=d6f96212e23, topicName=核糖体), TopicDto(id=69085, encryptionId=b0026908545, topicName=生殖干细胞)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20220519/c2ab253484ee4527a2d4e9589a4821ac/45de9bf494a54becb2ea4369c9d11e85.jpg, createdBy=7a3710, createdName=lovetcm, createdTime=Thu Aug 20 17:58:20 CST 2020, time=2020-08-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1025482, encodeId=6761102548201, content=干细胞是热点,但是进入临床仍然需要时间和临床疗效验证哦, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=独孤立克, createdTime=Fri Jul 24 10:12:41 CST 2020, time=2020-07-24, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=1871931, encodeId=f39018e193133, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Wed Sep 16 16:12:41 CST 2020, time=2020-09-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1962230, encodeId=7dcf196223081, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=395f25, createdName=爆笑小医, createdTime=Tue Nov 17 15:12:41 CST 2020, time=2020-11-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=811471, encodeId=03008114e197, content=<a href='/topic/show?id=4c239032154' target=_blank style='color:#2F92EE;'>#衰老#</a>,实际上细胞内各个亚细胞器官的衰老,包括<a href='/topic/show?id=4c3fe75743e' target=_blank style='color:#2F92EE;'>#线粒体#</a>,<a href='/topic/show?id=a1353053597' target=_blank style='color:#2F92EE;'>#内质网#</a>,<a href='/topic/show?id=36a8102336cb' target=_blank style='color:#2F92EE;'>#高尔基体#</a>,<a href='/topic/show?id=d6f96212e23' target=_blank style='color:#2F92EE;'>#核糖体#</a>等等,在组织学层面,是各个组织器官的干细胞的死亡,包括<a href='/topic/show?id=b0026908545' target=_blank style='color:#2F92EE;'>#生殖干细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=249, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90321, encryptionId=4c239032154, topicName=衰老), TopicDto(id=77574, encryptionId=4c3fe75743e, topicName=线粒体), TopicDto(id=30535, encryptionId=a1353053597, topicName=内质网), TopicDto(id=102336, encryptionId=36a8102336cb, topicName=高尔基体), TopicDto(id=62127, encryptionId=d6f96212e23, topicName=核糖体), TopicDto(id=69085, encryptionId=b0026908545, topicName=生殖干细胞)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20220519/c2ab253484ee4527a2d4e9589a4821ac/45de9bf494a54becb2ea4369c9d11e85.jpg, createdBy=7a3710, createdName=lovetcm, createdTime=Thu Aug 20 17:58:20 CST 2020, time=2020-08-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1025482, encodeId=6761102548201, content=干细胞是热点,但是进入临床仍然需要时间和临床疗效验证哦, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=独孤立克, createdTime=Fri Jul 24 10:12:41 CST 2020, time=2020-07-24, status=1, ipAttribution=)]
    2020-11-17 爆笑小医
  3. [GetPortalCommentsPageByObjectIdResponse(id=1871931, encodeId=f39018e193133, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Wed Sep 16 16:12:41 CST 2020, time=2020-09-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1962230, encodeId=7dcf196223081, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=395f25, createdName=爆笑小医, createdTime=Tue Nov 17 15:12:41 CST 2020, time=2020-11-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=811471, encodeId=03008114e197, content=<a href='/topic/show?id=4c239032154' target=_blank style='color:#2F92EE;'>#衰老#</a>,实际上细胞内各个亚细胞器官的衰老,包括<a href='/topic/show?id=4c3fe75743e' target=_blank style='color:#2F92EE;'>#线粒体#</a>,<a href='/topic/show?id=a1353053597' target=_blank style='color:#2F92EE;'>#内质网#</a>,<a href='/topic/show?id=36a8102336cb' target=_blank style='color:#2F92EE;'>#高尔基体#</a>,<a href='/topic/show?id=d6f96212e23' target=_blank style='color:#2F92EE;'>#核糖体#</a>等等,在组织学层面,是各个组织器官的干细胞的死亡,包括<a href='/topic/show?id=b0026908545' target=_blank style='color:#2F92EE;'>#生殖干细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=249, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90321, encryptionId=4c239032154, topicName=衰老), TopicDto(id=77574, encryptionId=4c3fe75743e, topicName=线粒体), TopicDto(id=30535, encryptionId=a1353053597, topicName=内质网), TopicDto(id=102336, encryptionId=36a8102336cb, topicName=高尔基体), TopicDto(id=62127, encryptionId=d6f96212e23, topicName=核糖体), TopicDto(id=69085, encryptionId=b0026908545, topicName=生殖干细胞)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20220519/c2ab253484ee4527a2d4e9589a4821ac/45de9bf494a54becb2ea4369c9d11e85.jpg, createdBy=7a3710, createdName=lovetcm, createdTime=Thu Aug 20 17:58:20 CST 2020, time=2020-08-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1025482, encodeId=6761102548201, content=干细胞是热点,但是进入临床仍然需要时间和临床疗效验证哦, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=独孤立克, createdTime=Fri Jul 24 10:12:41 CST 2020, time=2020-07-24, status=1, ipAttribution=)]
    2020-08-20 lovetcm

    #衰老#,实际上细胞内各个亚细胞器官的衰老,包括#线粒体##内质网##高尔基体##核糖体#等等,在组织学层面,是各个组织器官的干细胞的死亡,包括#生殖干细胞#

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1871931, encodeId=f39018e193133, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Wed Sep 16 16:12:41 CST 2020, time=2020-09-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1962230, encodeId=7dcf196223081, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=395f25, createdName=爆笑小医, createdTime=Tue Nov 17 15:12:41 CST 2020, time=2020-11-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=811471, encodeId=03008114e197, content=<a href='/topic/show?id=4c239032154' target=_blank style='color:#2F92EE;'>#衰老#</a>,实际上细胞内各个亚细胞器官的衰老,包括<a href='/topic/show?id=4c3fe75743e' target=_blank style='color:#2F92EE;'>#线粒体#</a>,<a href='/topic/show?id=a1353053597' target=_blank style='color:#2F92EE;'>#内质网#</a>,<a href='/topic/show?id=36a8102336cb' target=_blank style='color:#2F92EE;'>#高尔基体#</a>,<a href='/topic/show?id=d6f96212e23' target=_blank style='color:#2F92EE;'>#核糖体#</a>等等,在组织学层面,是各个组织器官的干细胞的死亡,包括<a href='/topic/show?id=b0026908545' target=_blank style='color:#2F92EE;'>#生殖干细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=249, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=90321, encryptionId=4c239032154, topicName=衰老), TopicDto(id=77574, encryptionId=4c3fe75743e, topicName=线粒体), TopicDto(id=30535, encryptionId=a1353053597, topicName=内质网), TopicDto(id=102336, encryptionId=36a8102336cb, topicName=高尔基体), TopicDto(id=62127, encryptionId=d6f96212e23, topicName=核糖体), TopicDto(id=69085, encryptionId=b0026908545, topicName=生殖干细胞)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20220519/c2ab253484ee4527a2d4e9589a4821ac/45de9bf494a54becb2ea4369c9d11e85.jpg, createdBy=7a3710, createdName=lovetcm, createdTime=Thu Aug 20 17:58:20 CST 2020, time=2020-08-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1025482, encodeId=6761102548201, content=干细胞是热点,但是进入临床仍然需要时间和临床疗效验证哦, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=独孤立克, createdTime=Fri Jul 24 10:12:41 CST 2020, time=2020-07-24, status=1, ipAttribution=)]
    2020-07-24 独孤立克

    干细胞是热点,但是进入临床仍然需要时间和临床疗效验证哦

    0

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