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Autophagy:抗抑郁药舍曲林靶向线粒体VDAC1蛋白调控自噬

2020-11-02 haibei MedSci原创

研究人员进一步表明,Sert通过诱导自噬,促进MAPT(微管相关蛋白tau)蛋白的自噬降解,从而抑制tau病。

自噬是一种高度保守的细胞内过程,它能清除细胞中错误折叠或老化的蛋白质,并回收受损的细胞器。自噬在维持细胞稳态方面起着关键作用,因为它能调节分解代谢,通过回收受损或老化的线粒体来缓解活性氧(ROS)的产生,并保护细胞免受外源性或内源性刺激的影响,如营养物质匮乏、氧气耗竭、病原体入侵(包括细菌和病毒)以及紫外线照射等。

自噬的失调与神经退行性疾病、血管再狭窄、白血病、癌症和衰老等多种疾病有关。因此,开发自噬调节剂成为治疗疾病的重要策略。

阿尔茨海默病是神经退行性疾病之一,涉及炎症和自噬缺陷。其特点是认知能力不可逆地大量丧失,并在神经元皮层形成由MAPT(微管相关蛋白tau)聚集物和淀粉样蛋白β组成的病态斑块复合物。自噬诱导剂被认为可以促进AD脑内有害蛋白的降解。因此,人们对开发可与其他AD疗法一起使用的强效自噬诱导剂的需求很高。

最近,研究人员在Autophagy杂志报道了一种抗抑郁药物,舍曲林(Sert),是一种自噬诱导剂。从机制上讲,Sert潜在地结合并拮抗线粒体VDAC1(电压依赖性阴离子通道1),导致细胞ATP(三磷酸腺苷)水平降低,激活AMP激活蛋白激酶(AMPK),并抑制其下游的MTOR(雷帕霉素激酶的机制性靶点)-RPS6KB1(核糖体蛋白S6激酶B1)信号通路。

缺乏VDAC1表达的细胞中,Sert完全丧失了对AMPK-MTOR通路和自噬诱导活性的调节作用。研究人员进一步表明,Sert通过诱导自噬,促进MAPT(微管相关蛋白tau)蛋白的自噬降解,从而抑制tau病。

因此,该研究证明了Sert作为一种新型小分子自噬诱导剂的潜力,并提供了一种通过靶向VDAC1治疗自噬相关疾病的新候选药物。

 

原始出处:

Hui-Yun Hwang et al. Antidepressant drug sertraline modulates AMPK-MTOR signaling-mediated autophagy via targeting mitochondrial VDAC1 protein. Autophagy (2020). DOI: https://doi.org/10.1080/15548627.2020.1841953

 

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    2021-03-13 wetgdt
  2. [GetPortalCommentsPageByObjectIdResponse(id=1722528, encodeId=ed721e22528ce, content=<a href='/topic/show?id=7ff5549865a' target=_blank style='color:#2F92EE;'>#抑郁药#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=68, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54986, encryptionId=7ff5549865a, topicName=抑郁药)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=78fa33270286, createdName=wetgdt, createdTime=Sat Mar 13 20:13:14 CST 2021, time=2021-03-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=896772, encodeId=2253896e7277, content=长见识啦, beContent=null, objectType=article, channel=null, level=null, likeNumber=125, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/b1wvblgVe3DzeVwvHZ1RvcUDjV5rdn37aluS21NEb5eH9WE20J7GzMGmZytribqdI1Yz2uSsibpkNVUz608aukFw/132, createdBy=04e95230639, createdName=lichifeng, createdTime=Wed Nov 04 08:50:48 CST 2020, time=2020-11-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1492264, encodeId=8d331492264c1, content=<a href='/topic/show?id=7999553333c' target=_blank style='color:#2F92EE;'>#抗抑郁#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=74, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55333, encryptionId=7999553333c, topicName=抗抑郁)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a59b8920619, createdName=wushaoling, createdTime=Wed Nov 04 01:13:14 CST 2020, time=2020-11-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=896351, encodeId=725f896351fb, content=学习了谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=142, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d2811974499, createdName=1e16b3b8m12(暂无匿称), createdTime=Mon Nov 02 18:04:34 CST 2020, time=2020-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=896319, encodeId=ec5689631940, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=142, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=433e5431104, createdName=ms3000000568632153, createdTime=Mon Nov 02 16:59:47 CST 2020, time=2020-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=896214, encodeId=90058962149e, content=<a href='/topic/show?id=4946865e5e4' target=_blank style='color:#2F92EE;'>#舍曲林#</a>靶向<a href='/topic/show?id=4c3fe75743e' target=_blank style='color:#2F92EE;'>#线粒体#</a>VDAC1蛋白调控<a href='/topic/show?id=049b86109ff' target=_blank style='color:#2F92EE;'>#自噬#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=259, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=86575, encryptionId=4946865e5e4, topicName=舍曲林), TopicDto(id=77574, encryptionId=4c3fe75743e, topicName=线粒体), TopicDto(id=86109, encryptionId=049b86109ff, topicName=自噬)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20220519/c2ab253484ee4527a2d4e9589a4821ac/45de9bf494a54becb2ea4369c9d11e85.jpg, createdBy=7a3710, createdName=lovetcm, createdTime=Mon Nov 02 11:18:54 CST 2020, time=2020-11-02, status=1, ipAttribution=)]
    2020-11-04 lichifeng

    长见识啦

    0

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    2020-11-02 1e16b3b8m12(暂无匿称)

    学习了谢谢

    0

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    2020-11-02 ms3000000568632153

    学习

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    2020-11-02 lovetcm

    #舍曲林#靶向#线粒体#VDAC1蛋白调控#自噬#

    0

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