Cell:脂肪能够让我们免受大脑疾病吗?

2016-09-16 佚名 生物谷

在一项新的研究中,关于线虫的一个有趣的发现提示着有一点多余的脂肪可能有助减低患上一些神经退行性疾病---如亨廷顿舞蹈病、帕金森病和阿尔茨海默病---的风险。相关研究结果发表在2016年9月8日那期Cell期刊上,论文标题为“Lipid Biosynthesis Coordinates a Mitochondrial-to-Cytosolic Stress Response”。 这些疾病的共同

在一项新的研究中,关于线虫的一个有趣的发现提示着有一点多余的脂肪可能有助减低患上一些神经退行性疾病---如亨廷顿舞蹈病、帕金森病和阿尔茨海默病---的风险。相关研究结果发表在2016年9月8日那期Cell期刊上,论文标题为“Lipid Biosynthesis Coordinates a Mitochondrial-to-Cytosolic Stress Response”。

这些疾病的共同特征是它们是由异常的蛋白在脑细胞中或脑细胞之间堆积形成斑块所导致的,其中这些斑块产生导致智力下降和早期死亡的损伤。

亨廷顿舞蹈病(Huntington's disease, HD)是由大脑神经元内的蛋白堆积导致的。这些蛋白堆积物---被称作亨廷顿舞蹈病堆积物---与神经细胞用来修复不正确折叠的蛋白所依赖的修复系统(即神经细胞中所谓的蛋白折叠反应)存在问题相关联。错误折叠的蛋白能够让其他的蛋白不正确地折叠,从而产生一种错误折叠蛋白链式反应,最终形成神经细胞不能够处理的团块。

当来自美国加州大学伯克利分校的研究人员破坏模拟亨廷顿舞蹈病的秀丽隐杆线虫模式动物体内的神经细胞中的线粒体时,他们观察到他们的线虫体内脂肪增多。他们将这种观察结果追踪到一种特定脂质的产生增加从而阻止蛋白聚集物形成。他们发现这种脂肪是开启阻止线虫和神经细胞免受亨廷顿舞蹈病的基因所必需的,从而揭示出一种新途径能够被用来治疗这种疾病。

同样的情形在盘碟中培养的人细胞系中经证实也是如此

加州大学伯克利分校分子与细胞生物学系霍华德-休斯医学研究所研究员Andrew Dillin说,“我们发现,当我们启动这种反应时,人细胞和线虫几乎完全阻止这种亨廷顿舞蹈病堆积物产生。

” 他们随后利用阻止细胞摄取和储存这种被称作神经酰胺的脂质的药物处理线虫和人细胞,结果观察到相同的保护效应。

他说,“如果我们能够操纵这种脂质通路,那么我们能够找出治疗亨廷顿舞蹈病的方法,这是因为在我们的研究中,这些药物是真正有益的。我们做好开展更高层次研究的准备。”

Dillin已开始在亨廷顿舞蹈病模式小鼠体内开展实验以便观察这些药物是够导致更好的结果。

原始出处

Hyun-Eui Kim, Ana Rodrigues Grant, Milos S. Simic, Rebecca A. Kohnz, Daniel K. Nomura, Jenni Durieux, Celine E. Riera, Melissa Sanchez, Erik Kapernick5, Suzanne Wolff, Andrew Dillin.Lipid Biosynthesis Coordinates a Mitochondrial-to-Cytosolic Stress Response.Cell.2016

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    2016-11-09 维他命
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    2016-11-26 仁医06
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    2016-09-18 1dd8a7c5m95(暂无匿称)

    学习了,赞一个!!!

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1672125, encodeId=3bcb16e2125a8, content=<a href='/topic/show?id=adfd8494496' target=_blank style='color:#2F92EE;'>#脑疾病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84944, encryptionId=adfd8494496, topicName=脑疾病)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=62f626885922, createdName=chendoc251, createdTime=Sun Oct 09 19:10:00 CST 2016, time=2016-10-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1959808, encodeId=ef05195980824, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=17, 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=Wed Nov 09 01:10:00 CST 2016, time=2016-11-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2009618, encodeId=1531200961850, content=<a href='/topic/show?id=2fc84393499' target=_blank style='color:#2F92EE;'>#大脑疾病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=43934, encryptionId=2fc84393499, topicName=大脑疾病)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8dba135, createdName=xuyong523, createdTime=Fri May 05 23:10:00 CST 2017, time=2017-05-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1869549, encodeId=7bd41869549e7, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=55683, createdName=仁医06, createdTime=Sat Nov 26 06:10:00 CST 2016, time=2016-11-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=129975, encodeId=6e0c1299e5da, content=学习了,赞一个!!!, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfNLvzZhgPxRuUXgacXpPeW0x8Z3Qr9c3I2kTic4ZIpR29iaftYgkjRcbv982icYMtqANBPYBgPnOia6mVtX76qMXuc/0, createdBy=ebe61630855, createdName=1dd8a7c5m95(暂无匿称), createdTime=Sun Sep 18 08:23:00 CST 2016, time=2016-09-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=129074, encodeId=f2201290e4fb, content=很好的内容,继续学习。, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ceb079804, createdName=lhl629, createdTime=Sat Sep 17 07:15:00 CST 2016, time=2016-09-17, status=1, ipAttribution=)]
    2016-09-17 lhl629

    很好的内容,继续学习。

    0

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