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GUT:治疗肝脂肪和高脂血症的新方法!

2017-04-08 MedSci MedSci原创

非酒精性脂肪肝(NAFLD)和微小RNA(miR)抑制的多靶点复杂性近来引起了研究者们很大的兴趣,但是肝细胞miR-靶点相互作用在体内的影响和环境的依赖性尚未完全了解。近期,一项发表在杂志GUT上的研究旨在评估对miR-介导表型的特异性靶点作用在体内的贡献,并以此研究代谢过程。在过表达miR-132的新型转基因小鼠,NAFLD患者的肝组织以及多种肝脏脂肪变性的小鼠模型中,研究者们定量了脂肪肝参数和

非酒精性脂肪肝(NAFLD)和微小RNA(miR)抑制的多靶点复杂性近来引起了研究者们很大的兴趣,但是肝细胞miR-靶点相互作用在体内的影响和环境的依赖性尚未完全了解。

近期,一项发表在杂志GUT上的研究旨在评估对miR-介导表型的特异性靶点作用在体内的贡献,并以此研究代谢过程。

在过表达miR-132的新型转基因小鼠,NAFLD患者的肝组织以及多种肝脏脂肪变性的小鼠模型中,研究者们定量了脂肪肝参数和miR-132及其靶标的水平。在饮食诱导的肥胖小鼠中注射miR-132或其靶基因的反义寡核苷酸抑制剂,并测量代谢参数和转录物的变化,测试这些表型中miR-132过量的因果性质。

此项研究结果显示:过表达miR-132的转基因小鼠显示出严重的脂肪肝表型和体重增加,血清低密度脂蛋白/极低密度脂蛋白(LDL / VLDL)和肝脏甘油三酯也显示升高,同时伴随有效的miR-132靶标减少和脂肪生成以及脂质积累相关转录物的增加。

与对照组相比,来自NAFLD患者和肝脏脂肪变性或非酒精性脂肪性肝病(NASH)的肝脏样本中显示出miR-132的显着增加,miR-132靶点的不同降低。此外,在饮食诱导的肥胖小鼠中注射抗miR-132寡核苷酸,但不抑制其单个靶点,可以逆转肝脏miR-132的过量和高脂血症表型。

此项研究结果表明:miR-132可以作为肝脏脂质体平衡的关键调节因子,通过抑制多个靶点和累积的协同效应发挥作用。这表明降低miR-132的水平可能作为治疗肝脂肪的一种方法。

原始出处:
Hanin G, Yayon N, et al. miRNA-132 induces hepatic steatosis and hyperlipidaemia by synergistic multitarget suppression. Gut. 2017 Apr 5. pii: gutjnl-2016-312869. doi: 10.1136/gutjnl-2016-312869.

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  2. [GetPortalCommentsPageByObjectIdResponse(id=1903204, encodeId=9bab1903204ea, content=<a href='/topic/show?id=e1b0583884b' target=_blank style='color:#2F92EE;'>#新方法#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58388, encryptionId=e1b0583884b, topicName=新方法)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c22f171, createdName=kord1982, createdTime=Tue Apr 25 02:40:00 CST 2017, time=2017-04-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=186917, encodeId=c5e418691e63, content=继续学习中谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c0a61971598, createdName=往日如昨, createdTime=Wed Apr 12 16:05:36 CST 2017, time=2017-04-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=186478, encodeId=36351864e830, content=继续学习。 , beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzfPkmqRTH5rHib5mcib8Wb3QdXjhfOK1UubQL2lictjJFdFJ6Lc3cnnCOSWqxXZ4Kk6y5GdzDoy764R/0, createdBy=156e1644785, createdName=doctorJiangchao, createdTime=Mon Apr 10 21:37:39 CST 2017, time=2017-04-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1574583, encodeId=e57815e4583e5, content=<a href='/topic/show?id=9b56102616bb' target=_blank style='color:#2F92EE;'>#高脂#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=102616, encryptionId=9b56102616bb, topicName=高脂)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c3b716021149, createdName=pcw111, createdTime=Mon Apr 10 03:40:00 CST 2017, time=2017-04-10, status=1, ipAttribution=)]
    2017-04-12 往日如昨

    继续学习中谢谢

    0

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    2017-04-10 doctorJiangchao

    继续学习。

    0

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    2017-04-10 pcw111

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