Cell:研究揭示了这种有毒蛋白质导致2型糖尿病

2018-03-10 佚名 medicalxpress

全球有近5亿人患有2型糖尿病。尽管这种疾病的影响很大,但其确切原因仍然不明朗。当前的科学思想指向两个关键过程:胰岛素抵抗,其中细胞开发调节胰岛素信号的方式,以及胰岛细胞产生胰岛素的特定细胞β细胞的分解。然而,这些活动的分子基础在很大程度上是未知的。

全球有近5亿人患有2型糖尿病。尽管这种疾病的影响很大,但其确切原因仍然不明朗。当前的科学思想指向两个关键过程:胰岛素抵抗,其中细胞开发调节胰岛素信号的方式,以及胰岛细胞产生胰岛素的特定细胞β细胞的分解。然而,这些活动的分子基础在很大程度上是未知的。

现在,怀特黑德研究所的一个研究小组正在推出新的理论,即异常蛋白质沉积(类似于阿尔茨海默病等神经退行性疾病中出现的沉积)在β细胞内和周围积聚并破坏其正常功能的理论。该小组的研究成果出现在今天的Cell Cell杂志的在线版上,它阐明了一种名为Ste24的关键蛋白的功能,该功能可以帮助将蛋白质穿梭到细胞内。研究人员认为,这种畅通的作用可能是减少甚至阻止蛋白质沉积物损害2型糖尿病中的宝贵β细胞的重要方式。

“我们已经创建了一个新的平台,用于鉴定潜在的遗传和药物靶点,可以帮助中和疾病患者中积累的毒性蛋白,”主要作者Can Kayatekin说:“在这个平台的最初研究中,我们公布了一个非常有趣的目标,Ste24,为2型糖尿病的生物学毒性开辟了一个重要窗口。”

除降糖激素胰岛素外,β细胞产生另一种称为IAPP(人胰岛淀粉样多肽的缩写)的蛋白质。由于这两种蛋白质在细胞内成熟,它们被捆绑在一起并在相同的微型包或泡囊内释放。然而,正如其名称所示,IAPP可能堆积在细胞内外。

原始出处:

Can Kayatekin11, Audra Amasino, Giorgio Gaglia, et.al. Translocon Declogger Ste24 Protects against IAPP Oligomer-Induced Proteotoxicity. Cell 2018

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    2018-10-02 维他命
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    2018-03-14 衣带渐宽

    学习

    0

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  6. [GetPortalCommentsPageByObjectIdResponse(id=1960756, encodeId=82a11960e56d2, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, 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=Tue Oct 02 04:14:00 CST 2018, time=2018-10-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1870488, encodeId=109e18e0488bf, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Jan 21 17:14:00 CST 2019, time=2019-01-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1765708, encodeId=36851e6570847, content=<a href='/topic/show?id=252ae1803a3' target=_blank style='color:#2F92EE;'>#白质#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71803, encryptionId=252ae1803a3, topicName=白质)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=778d36, createdName=柳叶一刀, createdTime=Thu Oct 25 23:14:00 CST 2018, time=2018-10-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=296079, encodeId=f2fc2960e982, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmhead/Q3auHgzwzM6P57Bs8gOPaY1cQP9lIia0lmZOEXraGaoicqNToIslXDKw/0, createdBy=7a041951742, createdName=衣带渐宽, createdTime=Wed Mar 14 07:33:31 CST 2018, time=2018-03-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1297030, encodeId=343c129e03006, content=<a href='/topic/show?id=158288e017c' target=_blank style='color:#2F92EE;'>#蛋白质#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=88701, encryptionId=158288e017c, topicName=蛋白质)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c689267, createdName=cmj8wellington, createdTime=Mon Mar 12 00:14:00 CST 2018, time=2018-03-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294962, encodeId=7d13294962ba, content=学习.谢谢分享., beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/xkvRjYnJzzRJ2R0y7VhicibvkjPWHjIMmu4ZpKnE9cWAu4lVicS3uDUCfF4M4JWvrkrYfpb2KehPV0Ee29tPqyPEebBUibiaKhnvD/0, createdBy=f8412001184, createdName=惠映实验室, createdTime=Sat Mar 10 22:49:57 CST 2018, time=2018-03-10, status=1, ipAttribution=)]
    2018-03-10 惠映实验室

    学习.谢谢分享.

    0

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