Alzheimer's & Dementia:新型抗体针对tau蛋白寡聚体,促进细胞中tau蛋白的溶酶体清除

2020-11-01 haibei MedSci原创

研究人员开发的针对纯化的低n tau重复域低聚物的单克隆抗体,作为中和tau聚集和毒性的工具。

Tau是一种神经元微管相关蛋白,在一系列被称为tau疾病的神经退行性疾病中聚集形成不溶性的纤维状沉积物。阿尔茨海默病(AD)的特点是存在由淀粉样蛋白β(Aβ)组成的细胞外斑块和细胞内tau的缠结。

人们已经尝试了几种针对Aβ病理的治疗方法,但到目前为止,它们未能在临床试验中显示出显著的益处。因此,针对tau病理的治疗方法已经变得非常重要,尤其是AD的认知能力下降与tau病理的相关性比与淀粉样蛋白负担的相关性更好。

已有的研究发现了几种基于小分子的治疗方法,旨在减少tau聚集,其在动物模型中似乎很有希望,但在临床试验中都失败了,因此,基于tau的免疫疗法可能更具希望。

最近,研究人员在Alzheimer's & Dementia杂志发文,报导其开发的针对纯化的低n tau重复域低聚物的单克隆抗体,作为中和tau聚集和毒性的工具。

研究人员通过硫黄素S,动态光散射(DLS)和原子力显微镜(AFM)测试体外聚集抑制,并使用分裂荧光素酶互补试验和荧光激活细胞分选(FACS),在tau疾病的N2a细胞模型中分析了抗体对聚集的抑制作用。

结果显示,抗体通过阻断tau在寡聚状态下的聚集,在体外抑制tau聚集达90%左右。通过分裂荧光素酶补体试验测定,一些抗体能够阻断tau在细胞中的二聚体化/多聚体化。细胞外应用的抗体被内化并导致tau被封存到溶酶体中进行降解。

因此,新颖的低N-tau寡聚体特异性单克隆抗体可抑制细胞中Tau寡聚体化,促进毒性tau的清除。

 

原始出处:

Ram Reddy Chandupatla et al. Novel antibody against low‐n oligomers of tau protein promotes clearance of tau in cells via lysosomes. Alzheimer's Association (2020). DOI: https://doi.org/10.1002/trc2.12097

 

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    2020-11-07 1581f8c42cm

    好奥

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    2020-11-06 1581f8c42cm

    0

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    2020-11-05 ms2000001510330756

    学习

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1717975, encodeId=105d1e1797518, content=<a href='/topic/show?id=8f0658433a' target=_blank style='color:#2F92EE;'>#dementia#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5843, encryptionId=8f0658433a, topicName=dementia)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=307e32501717, createdName=linlin2323, createdTime=Sat Nov 21 20:31:13 CST 2020, time=2020-11-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=897499, encodeId=db6689e4991c, content=好奥, beContent=null, objectType=article, channel=null, level=null, likeNumber=106, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200814/81d08245657a4a7f9a1ef713c0ec5878/ec4b201a22194a319b1aeb171bc6bb3d.jpg, createdBy=41e02111625, createdName=1581f8c42cm, createdTime=Sat Nov 07 06:36:06 CST 2020, time=2020-11-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=897242, encodeId=a18e89e2422b, content=好, beContent=null, objectType=article, channel=null, level=null, likeNumber=103, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200814/81d08245657a4a7f9a1ef713c0ec5878/ec4b201a22194a319b1aeb171bc6bb3d.jpg, createdBy=41e02111625, createdName=1581f8c42cm, createdTime=Fri Nov 06 06:48:59 CST 2020, time=2020-11-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=897057, encodeId=a0a689e05733, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=101, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20201105/9a970e98a73447d7a344385701fd79cf/274136808d8d4bc38b442d36196acdb0.jpg, createdBy=224a5430852, createdName=ms2000001510330756, createdTime=Thu Nov 05 11:00:58 CST 2020, time=2020-11-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1509303, encodeId=0a2b150930369, content=<a href='/topic/show?id=19791e14471' target=_blank style='color:#2F92EE;'>#Tau#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17144, encryptionId=19791e14471, topicName=Tau)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Tue Nov 03 07:31:13 CST 2020, time=2020-11-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=896159, encodeId=a6e6896159c8, content=AD治疗的新希望, beContent=null, objectType=article, channel=null, level=null, likeNumber=98, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJlfgys76DEiaNtbYo2re3ibjrUPTRibEXRyFwAB4aAGiave842S0FQDf0wAoaH226NiaSoPPDzhndsf1g/132, createdBy=88b489038, createdName=yangchou, createdTime=Mon Nov 02 07:13:33 CST 2020, time=2020-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=896098, encodeId=504c896098af, content=谢谢!, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTLAaT49BWZ5LsjicVar1PlKKvBXEsXXrLHrWib9drOX9EEGSEXjKuR4fthe8DvkdPxVxlMU54spB6VA/132, createdBy=463a2037573, createdName=chiefland, createdTime=Sun Nov 01 20:05:48 CST 2020, time=2020-11-01, status=1, ipAttribution=)]
    2020-11-03 hb2008ye
  6. [GetPortalCommentsPageByObjectIdResponse(id=1717975, encodeId=105d1e1797518, content=<a href='/topic/show?id=8f0658433a' target=_blank style='color:#2F92EE;'>#dementia#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5843, encryptionId=8f0658433a, topicName=dementia)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=307e32501717, createdName=linlin2323, createdTime=Sat Nov 21 20:31:13 CST 2020, time=2020-11-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=897499, encodeId=db6689e4991c, content=好奥, beContent=null, objectType=article, channel=null, level=null, likeNumber=106, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200814/81d08245657a4a7f9a1ef713c0ec5878/ec4b201a22194a319b1aeb171bc6bb3d.jpg, createdBy=41e02111625, createdName=1581f8c42cm, createdTime=Sat Nov 07 06:36:06 CST 2020, time=2020-11-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=897242, encodeId=a18e89e2422b, content=好, beContent=null, objectType=article, channel=null, level=null, likeNumber=103, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200814/81d08245657a4a7f9a1ef713c0ec5878/ec4b201a22194a319b1aeb171bc6bb3d.jpg, createdBy=41e02111625, createdName=1581f8c42cm, createdTime=Fri Nov 06 06:48:59 CST 2020, time=2020-11-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=897057, encodeId=a0a689e05733, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=101, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20201105/9a970e98a73447d7a344385701fd79cf/274136808d8d4bc38b442d36196acdb0.jpg, createdBy=224a5430852, createdName=ms2000001510330756, createdTime=Thu Nov 05 11:00:58 CST 2020, time=2020-11-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1509303, encodeId=0a2b150930369, content=<a href='/topic/show?id=19791e14471' target=_blank style='color:#2F92EE;'>#Tau#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17144, encryptionId=19791e14471, topicName=Tau)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Tue Nov 03 07:31:13 CST 2020, time=2020-11-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=896159, encodeId=a6e6896159c8, content=AD治疗的新希望, beContent=null, objectType=article, channel=null, level=null, likeNumber=98, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJlfgys76DEiaNtbYo2re3ibjrUPTRibEXRyFwAB4aAGiave842S0FQDf0wAoaH226NiaSoPPDzhndsf1g/132, createdBy=88b489038, createdName=yangchou, createdTime=Mon Nov 02 07:13:33 CST 2020, time=2020-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=896098, encodeId=504c896098af, content=谢谢!, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTLAaT49BWZ5LsjicVar1PlKKvBXEsXXrLHrWib9drOX9EEGSEXjKuR4fthe8DvkdPxVxlMU54spB6VA/132, createdBy=463a2037573, createdName=chiefland, createdTime=Sun Nov 01 20:05:48 CST 2020, time=2020-11-01, status=1, ipAttribution=)]
    2020-11-02 yangchou

    AD治疗的新希望

    0

  7. [GetPortalCommentsPageByObjectIdResponse(id=1717975, encodeId=105d1e1797518, content=<a href='/topic/show?id=8f0658433a' target=_blank style='color:#2F92EE;'>#dementia#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5843, encryptionId=8f0658433a, topicName=dementia)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=307e32501717, createdName=linlin2323, createdTime=Sat Nov 21 20:31:13 CST 2020, time=2020-11-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=897499, encodeId=db6689e4991c, content=好奥, beContent=null, objectType=article, channel=null, level=null, likeNumber=106, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200814/81d08245657a4a7f9a1ef713c0ec5878/ec4b201a22194a319b1aeb171bc6bb3d.jpg, createdBy=41e02111625, createdName=1581f8c42cm, createdTime=Sat Nov 07 06:36:06 CST 2020, time=2020-11-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=897242, encodeId=a18e89e2422b, content=好, beContent=null, objectType=article, channel=null, level=null, likeNumber=103, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200814/81d08245657a4a7f9a1ef713c0ec5878/ec4b201a22194a319b1aeb171bc6bb3d.jpg, createdBy=41e02111625, createdName=1581f8c42cm, createdTime=Fri Nov 06 06:48:59 CST 2020, time=2020-11-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=897057, encodeId=a0a689e05733, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=101, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20201105/9a970e98a73447d7a344385701fd79cf/274136808d8d4bc38b442d36196acdb0.jpg, createdBy=224a5430852, createdName=ms2000001510330756, createdTime=Thu Nov 05 11:00:58 CST 2020, time=2020-11-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1509303, encodeId=0a2b150930369, content=<a href='/topic/show?id=19791e14471' target=_blank style='color:#2F92EE;'>#Tau#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17144, encryptionId=19791e14471, topicName=Tau)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Tue Nov 03 07:31:13 CST 2020, time=2020-11-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=896159, encodeId=a6e6896159c8, content=AD治疗的新希望, beContent=null, objectType=article, channel=null, level=null, likeNumber=98, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJlfgys76DEiaNtbYo2re3ibjrUPTRibEXRyFwAB4aAGiave842S0FQDf0wAoaH226NiaSoPPDzhndsf1g/132, createdBy=88b489038, createdName=yangchou, createdTime=Mon Nov 02 07:13:33 CST 2020, time=2020-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=896098, encodeId=504c896098af, content=谢谢!, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTLAaT49BWZ5LsjicVar1PlKKvBXEsXXrLHrWib9drOX9EEGSEXjKuR4fthe8DvkdPxVxlMU54spB6VA/132, createdBy=463a2037573, createdName=chiefland, createdTime=Sun Nov 01 20:05:48 CST 2020, time=2020-11-01, status=1, ipAttribution=)]
    2020-11-01 chiefland

    谢谢!

    0

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