Sci transl med:一种单克隆抗体能抵御两种病毒

2017-04-10 万纹 生物通

德州大学加尔维斯顿医学分部的研究人员发现一种人体单克隆抗体:MR191-N可以帮助非人类灵长类动物抵御 Marburg病毒和 Ravn病毒所引起的致命性出血热。这一研究成果公布在4月5日的Science Translational Medicine杂志上。马尔堡出血热 (Marburg hemorrhagicfever,MHF) 是由马尔堡病毒(Marburg Virus)引起的以急性发热伴有严重

德州大学加尔维斯顿医学分部的研究人员发现一种人体单克隆抗体:MR191-N可以帮助非人类灵长类动物抵御 Marburg病毒和 Ravn病毒所引起的致命性出血热。这一研究成果公布在4月5日的Science Translational Medicine杂志上。

马尔堡出血热 (Marburg hemorrhagicfever,MHF) 是由马尔堡病毒(Marburg Virus)引起的以急性发热伴有严重出血为主要临床表现的传染性疾病,经密切接触传播,传染性强,病死率高。由于马尔堡病毒来自于非洲绿猴并主要在非洲流行,因此马尔堡出血热又被称为青猴病和非洲出血热。

这种病毒引发的疾病在1967年首次被确认的,此后被证明约80%的感染者死亡,而目前还没有发现在临床上证明有效的治疗方法(包括疫苗)。而且一般患者不容易发现感染了Marburg病毒,因此这令针对Marburg病毒疫情爆发的控制变得尤为困难。此外,Marburg病毒和Ravn病毒,都与埃博拉病毒(它是相关的丝状病毒科中的一员)相似,都是会引起高度危险的传染病,导致发烧、呕吐、严重腹泻、内出血,在很多情况下感染者会死亡。更重要的是,最近在2013-2016年间出现的埃博拉疫情也表明了目前缺乏对抗丝状病毒的预防和治疗措施这一重要问题。

在最新这篇文章中,研究人员发现一种被称作MR191-N的抗体可防止豚鼠和非人类灵长动物因感染Marburg病毒和Ravn病毒而死亡。

MR191-N是先前从一名Marburg病毒幸存者血清中分离出的抗体。研究证明在感染后第4天和第7天得到两剂MR191-N治疗的非人类灵长动物能清除其体内的病毒,并100%地存活下来,但对照组的动物则全部死于感染。研究人员说,如果要将MR191用于临床,还需要进行更多的药理学和毒理学测试,进一步检测这一抗体的作用。

除了这项研究之外,此前也有实验室也在抓紧研制Marburg病毒的疫苗,美国和加拿大数个实验室的研究人员此前曾在Science Translational Medicine发文,针对病毒中一种核蛋白设计了一类特殊化学修饰的siRNA,并用一种脂质材料进行自主装成为siRNA纳米颗粒,这种颗粒命名为NP-718m–LNP。

研究人员发现21只来自中国的恒河猴,在感染了Marburg病毒30至45分钟后、1天后、2天后和3天后使用NP-718m–LNP治疗,前3组每日剂量为0.5 mg/kg,而感染病毒3天的第四组猴子已经出现出血热症状,每日剂量升高到1mg/kg,所有实验组猴子连续静脉注射7天;另外5只为阴性对照组。实验结果发现,接受NP-718m-LNP治疗的16只恒河猴全部存活,包括已经出现出血热症状的猴子,而使用非靶向性药物处理及未处理的其他对照恒河猴则在感染的第7天至第9天中全部死亡。

研究表明,针对病毒关键蛋白或基因设计siRNA,在恒河猴这类动物模型中表现出明显的Marburg病毒抑制能力,研究人员也曾使用类似技术有效治疗了感染了扎伊尔型埃博拉病毒的恒河猴模型。所以,经过特殊处理的siRNA或许能拥有抗丝状病毒的潜力,这为研发埃博拉病毒疫苗提出了新的方向。

原始出处:

Mire CE,Geisbert JB,Borisevich V,Fenton KA,et al. Therapeutic treatment of Marburg and Ravn virus infection in nonhuman primates with a human monoclonal antibody. science translational medcine. 2017 Apr.

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    2017-11-30 bsmagic9140
  4. [GetPortalCommentsPageByObjectIdResponse(id=2067214, encodeId=fa7c206e2145a, content=<a href='/topic/show?id=d0841e75535' target=_blank style='color:#2F92EE;'>#Transl#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17755, encryptionId=d0841e75535, topicName=Transl)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/101173734/363C99735735B7F4CB11D5F78F580525/100, createdBy=aab22500211, createdName=ms3025846204744509, createdTime=Wed Nov 15 02:31:00 CST 2017, time=2017-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1660120, encodeId=b3c6166012074, content=<a href='/topic/show?id=8d0d28912db' target=_blank style='color:#2F92EE;'>#克隆#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=28912, encryptionId=8d0d28912db, topicName=克隆)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=596825099872, createdName=aids221, createdTime=Wed May 24 11:31:00 CST 2017, time=2017-05-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1656764, encodeId=e4d51656e64eb, content=<a href='/topic/show?id=3ca31e71903' target=_blank style='color:#2F92EE;'>#TRA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17719, encryptionId=3ca31e71903, topicName=TRA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=757b24868428, createdName=bsmagic9140, createdTime=Thu Nov 30 00:31:00 CST 2017, time=2017-11-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=234732, encodeId=bdb0234e32fa, content=在最新这篇文章中,研究人员发现一种被称作MR191-N的抗体可防止豚鼠和非人类灵长动物因感染Marburg病毒和Ravn病毒而死亡。 , beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3wrgsNyr5lh6N2MY5xSnbvo4g5sRlc3MZoDdWpMeSdozUCPNhA96wndwQe3X5Z5oYMNxVUdOib63nw/0, createdBy=d8d11998754, createdName=Julie W, createdTime=Fri Aug 18 10:23:09 CST 2017, time=2017-08-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1770501, encodeId=37351e70501ec, content=<a href='/topic/show?id=05fe2665508' target=_blank style='color:#2F92EE;'>#体能#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=26655, encryptionId=05fe2665508, topicName=体能)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=80ae38174281, createdName=liubm568, createdTime=Mon Jul 10 03:31:00 CST 2017, time=2017-07-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1607374, encodeId=4334160e37444, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=18, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Tue Apr 11 23:31:00 CST 2017, time=2017-04-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=186395, encodeId=54d718639597, content=文章不错,值得分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzdAIB7UwTkHt6fQkBP8ictliaXtc5gCUmYdAW1sAETC2nhO3q6YjRHkUibyOCtP8ibmXNObTyd63A076/0, createdBy=d4111948983, createdName=1e10c84am36(暂无匿称), createdTime=Mon Apr 10 10:34:17 CST 2017, time=2017-04-10, status=1, ipAttribution=)]
    2017-08-18 Julie W

    在最新这篇文章中,研究人员发现一种被称作MR191-N的抗体可防止豚鼠和非人类灵长动物因感染Marburg病毒和Ravn病毒而死亡。

    0

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    2017-07-10 liubm568
  6. [GetPortalCommentsPageByObjectIdResponse(id=2067214, encodeId=fa7c206e2145a, content=<a href='/topic/show?id=d0841e75535' target=_blank style='color:#2F92EE;'>#Transl#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17755, encryptionId=d0841e75535, topicName=Transl)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/101173734/363C99735735B7F4CB11D5F78F580525/100, createdBy=aab22500211, createdName=ms3025846204744509, createdTime=Wed Nov 15 02:31:00 CST 2017, time=2017-11-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1660120, encodeId=b3c6166012074, content=<a href='/topic/show?id=8d0d28912db' target=_blank style='color:#2F92EE;'>#克隆#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=28912, encryptionId=8d0d28912db, topicName=克隆)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=596825099872, createdName=aids221, createdTime=Wed May 24 11:31:00 CST 2017, time=2017-05-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1656764, encodeId=e4d51656e64eb, content=<a href='/topic/show?id=3ca31e71903' target=_blank style='color:#2F92EE;'>#TRA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17719, encryptionId=3ca31e71903, topicName=TRA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=757b24868428, createdName=bsmagic9140, createdTime=Thu Nov 30 00:31:00 CST 2017, time=2017-11-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=234732, encodeId=bdb0234e32fa, content=在最新这篇文章中,研究人员发现一种被称作MR191-N的抗体可防止豚鼠和非人类灵长动物因感染Marburg病毒和Ravn病毒而死亡。 , beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3wrgsNyr5lh6N2MY5xSnbvo4g5sRlc3MZoDdWpMeSdozUCPNhA96wndwQe3X5Z5oYMNxVUdOib63nw/0, createdBy=d8d11998754, createdName=Julie W, createdTime=Fri Aug 18 10:23:09 CST 2017, time=2017-08-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1770501, encodeId=37351e70501ec, content=<a href='/topic/show?id=05fe2665508' target=_blank style='color:#2F92EE;'>#体能#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=26655, encryptionId=05fe2665508, topicName=体能)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=80ae38174281, createdName=liubm568, createdTime=Mon Jul 10 03:31:00 CST 2017, time=2017-07-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1607374, encodeId=4334160e37444, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=18, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Tue Apr 11 23:31:00 CST 2017, time=2017-04-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=186395, encodeId=54d718639597, content=文章不错,值得分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzdAIB7UwTkHt6fQkBP8ictliaXtc5gCUmYdAW1sAETC2nhO3q6YjRHkUibyOCtP8ibmXNObTyd63A076/0, createdBy=d4111948983, createdName=1e10c84am36(暂无匿称), createdTime=Mon Apr 10 10:34:17 CST 2017, time=2017-04-10, status=1, ipAttribution=)]
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    2017-04-10 1e10c84am36(暂无匿称)

    文章不错,值得分享

    0

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