Baidu
map

Blood:miR-144/451通过调控Cox10的表达抑制线粒体呼吸

2019-04-13 MedSci MedSci原创

中心点:miR-144/451只抑制小鼠有核红细胞中一小部分的结合mRNAs。在红细胞生成过程中,miR-451可抑制线粒体呼吸。摘要:miR-144/451在红细胞前体中大量表达,促进其终末成熟,保护机体免受氧化应激。但是红细胞miR-144/451的靶mRNAs谱和相关的细胞信号通路尚不明确。一般来说,miRNA的预测靶mRNA的数量在数百到数千不等,与实验方法相关。为全面、准确地识别红系细胞

中心点:

miR-144/451只抑制小鼠有核红细胞中一小部分的结合mRNAs。

在红细胞生成过程中,miR-451可抑制线粒体呼吸。

摘要:

miR-144/451在红细胞前体中大量表达,促进其终末成熟,保护机体免受氧化应激。但是红细胞miR-144/451的靶mRNAs谱和相关的细胞信号通路尚不明确。一般来说,miRNA的预测靶mRNA的数量在数百到数千不等,与实验方法相关。

为全面、准确地识别红系细胞miR-144/451的靶mRNAs,研究人员通过RNA测序、定量蛋白质组学和Argonaute (Ago,RNA诱导沉默复合体[RISC]的组成成分,可结合miRNAs附合到靶mRNAs上)的RNA免疫沉淀技术对基因敲除(KO)和野生型的胎儿肝红细胞进行对比。

通过miR-144/451依赖性方式,Argonaute大约可结合1400个红系细胞mRNAs,约占Ago结合mRNAs的三分之一。但miR-144/451缺失后,仅约100个mRNAs是稳定的。因此,miR-144和miR-451可解除大约10%的它们结合的mRNAs的调控,这一特征可能普遍适用于其他miRNA。

采用严格的选择标准,最终确定了53个miR-144/451的新靶mRNAs。其中,Cox10可促进线粒体电子转运复合物IV的组装。缺失miR-144/451可增加Cox10的mRNA和蛋白水平、促进复合物IV积累并可增强线粒体膜电位,且不改变线粒体质量。

总而言之,在红细胞生成过程中,miR-144/451可通过抑制Cox10的合成来抑制线粒体呼吸。

原始出处:

Peng Xu, et al. Regulation of gene expression by miR-144/451 during mouse erythropoiesis. Blood 2019 :blood.2018854604; doi: https://doi.org/10.1182/blood.2018854604 

本文系梅斯医学(MedSci)原创编译,转载需授权!

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 (3)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1930698, encodeId=f68819306981d, content=<a href='/topic/show?id=22f61180211' target=_blank style='color:#2F92EE;'>#miR#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11802, encryptionId=22f61180211, topicName=miR)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0a27288, createdName=smallant2002, createdTime=Fri Jan 17 00:23:00 CST 2020, time=2020-01-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1978293, encodeId=9d9919e82939d, content=<a href='/topic/show?id=312be7589ba' target=_blank style='color:#2F92EE;'>#线粒体呼吸#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77589, encryptionId=312be7589ba, topicName=线粒体呼吸)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ce68183, createdName=xiongke010, createdTime=Tue Dec 03 18:23:00 CST 2019, time=2019-12-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1783797, encodeId=270e1e83797eb, content=<a href='/topic/show?id=b3005145d7' target=_blank style='color:#2F92EE;'>#Cox10#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5145, encryptionId=b3005145d7, topicName=Cox10)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5a6b240, createdName=俅侠, createdTime=Fri Dec 20 06:23:00 CST 2019, time=2019-12-20, status=1, ipAttribution=)]
    2020-01-17 smallant2002
  2. [GetPortalCommentsPageByObjectIdResponse(id=1930698, encodeId=f68819306981d, content=<a href='/topic/show?id=22f61180211' target=_blank style='color:#2F92EE;'>#miR#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11802, encryptionId=22f61180211, topicName=miR)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0a27288, createdName=smallant2002, createdTime=Fri Jan 17 00:23:00 CST 2020, time=2020-01-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1978293, encodeId=9d9919e82939d, content=<a href='/topic/show?id=312be7589ba' target=_blank style='color:#2F92EE;'>#线粒体呼吸#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77589, encryptionId=312be7589ba, topicName=线粒体呼吸)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ce68183, createdName=xiongke010, createdTime=Tue Dec 03 18:23:00 CST 2019, time=2019-12-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1783797, encodeId=270e1e83797eb, content=<a href='/topic/show?id=b3005145d7' target=_blank style='color:#2F92EE;'>#Cox10#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5145, encryptionId=b3005145d7, topicName=Cox10)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5a6b240, createdName=俅侠, createdTime=Fri Dec 20 06:23:00 CST 2019, time=2019-12-20, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1930698, encodeId=f68819306981d, content=<a href='/topic/show?id=22f61180211' target=_blank style='color:#2F92EE;'>#miR#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11802, encryptionId=22f61180211, topicName=miR)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0a27288, createdName=smallant2002, createdTime=Fri Jan 17 00:23:00 CST 2020, time=2020-01-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1978293, encodeId=9d9919e82939d, content=<a href='/topic/show?id=312be7589ba' target=_blank style='color:#2F92EE;'>#线粒体呼吸#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77589, encryptionId=312be7589ba, topicName=线粒体呼吸)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ce68183, createdName=xiongke010, createdTime=Tue Dec 03 18:23:00 CST 2019, time=2019-12-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1783797, encodeId=270e1e83797eb, content=<a href='/topic/show?id=b3005145d7' target=_blank style='color:#2F92EE;'>#Cox10#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5145, encryptionId=b3005145d7, topicName=Cox10)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5a6b240, createdName=俅侠, createdTime=Fri Dec 20 06:23:00 CST 2019, time=2019-12-20, status=1, ipAttribution=)]
    2019-12-20 俅侠
Baidu
map
Baidu
map
Baidu
map