Neuron:研究发现治疗ALS的新靶标

2014-08-19 佚名 生物谷

近日,梅奥诊所与斯克里普斯研究所研究人员,已经制定了新治疗策略,用于打击那些引发神经退行性疾病肌萎缩侧索硬化(ALS或卢伽雷氏病)和额颞叶痴呆(FTD)疾病的最常见遗传风险因子。相关研究发表在Neuron杂志上,新研究也发现了潜在生物标志物,来跟踪疾病的进展和治疗功效。科学家开发出一种小分子化合物,可以防止因C9ORF72基因突变引起的异常细胞过程。这项发现是在梅奥诊所先前研究成果基础上获得的,先

近日,梅奥诊所与斯克里普斯研究所研究人员,已经制定了新治疗策略,用于打击那些引发神经退行性疾病肌萎缩侧索硬化(ALS或卢伽雷氏病)和额颞叶痴呆(FTD)疾病的最常见遗传风险因子。相关研究发表在Neuron杂志上,新研究也发现了潜在生物标志物,来跟踪疾病的进展和治疗功效。

科学家开发出一种小分子化合物,可以防止因C9ORF72基因突变引起的异常细胞过程。这项发现是在梅奥诊所先前研究成果基础上获得的,先前的研究发现C9ORF72突变产生不同寻常的重复基因序列,导致脑细胞和脊髓中异常RNA积累。

虽然毒蛋白团块早已被证实与神经退行性疾病密切相关,但这一新战略瞄准了异常RNA,异常RNA积累在C9ORF72相关疾病(c9FTD/ ALS)毒蛋白形成之前就已经出现,异常RNA累积会导致产生毒性c9RAN蛋白。研究员Leonard Petrucelli博士表示:我们的研究表明,c9FTD/ ALS突变患者产生的毒性RNA,确实是一个可行的药物靶标。

开发出一种小分子化合物将在c9FTD/ ALS细胞模型中测试其绑定并阻止RNA和其他关键蛋白相互作用、形成有毒RNA团块和c9RAN蛋白的能力。研究人员还发现,异常RNA产生的c9RAN蛋白可以在ALS患者的脑脊髓液中进行测定。他们正评估这些蛋白质是否也存在于FTD患者脊髓液中。

寻找到c9FTD/ ALS突变的生物标志物,可能不仅有助于这些疾病的诊断,同时也有助于追踪患者病程,提供一个更直接的方式来评估患者的治疗反应。

例如,患者应对治疗反应,c9RAN蛋白水平出现降低,这表明药物产生了期望的效果。这种生物标志物的发现是非常令人兴奋的,即使实验还处初期阶段。

原始出处:

Su Z1, Zhang Y2, Gendron TF2, Bauer PO2, Chew J2, Yang WY1, Fostvedt E1, Jansen-West K2, Belzil VV2, Desaro P3, Johnston A3, Overstreet K3, Boeve BF4, Dickson D2, Floeter MK5, Traynor BJ6, Morelli C7, Ratti A8, Silani V8, Rademakers R2, Brown RH9, Rothstein JD10, Boylan KB3, Petrucelli L11, Disney MD12.Discovery of a Biomarker and Lead Small Molecules to Target r(GGGGCC)-Associated Defects in c9FTD/ALS.Neuron. 2014 Aug 13. pii: S0896-6273(14)00673-4. doi: 10.1016/j.neuron.2014.07.041. [Epub ahead of print]

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    2015-01-25 by2021
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  3. [GetPortalCommentsPageByObjectIdResponse(id=1751787, encodeId=f2561e51787a4, content=<a href='/topic/show?id=9b6a12e0155' target=_blank style='color:#2F92EE;'>#Neuron#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12701, encryptionId=9b6a12e0155, topicName=Neuron)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c9c736410065, createdName=by2021, createdTime=Sun Jan 25 01:20:00 CST 2015, time=2015-01-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1753079, encodeId=ad1a1e5307925, content=<a href='/topic/show?id=6a57e33772b' target=_blank style='color:#2F92EE;'>#研究发现#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73377, encryptionId=6a57e33772b, topicName=研究发现)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=7e1736602208, createdName=hanhaisha2020, createdTime=Mon Apr 20 11:20:00 CST 2015, time=2015-04-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=12073, encodeId=afb5120e3ef, content=是个关注点,值得进一步研究。, beContent=null, objectType=article, channel=null, level=null, likeNumber=116, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=9a59109196, createdName=zyzyyan, createdTime=Fri Oct 10 13:25:00 CST 2014, time=2014-10-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=11322, encodeId=dbbe11322ba, content=希望越来越多人关注ALS, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=870092288, createdName=rosa00tong, createdTime=Tue Aug 26 17:32:00 CST 2014, time=2014-08-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1352729, encodeId=30161352e292d, content=<a href='/topic/show?id=827d9996311' target=_blank style='color:#2F92EE;'>#靶标#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=99963, encryptionId=827d9996311, topicName=靶标)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=zhaojie88, createdTime=Thu Aug 21 00:20:00 CST 2014, time=2014-08-21, status=1, ipAttribution=)]
    2014-10-10 zyzyyan

    是个关注点,值得进一步研究。

    0

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    2014-08-26 rosa00tong

    希望越来越多人关注ALS

    0

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    2014-08-21 zhaojie88

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