NEJM:NVX-CoV2373疫苗表现出良好的安全性及免疫效果

2020-12-10 MedSci原创 MedSci原创

NVX-CoV2373疫苗是安全的,其诱导接种者的免疫反应水平超过了Covid-19患者恢复期血清抗体水平,添加Matrix-M1佐剂后,诱导的CD4+T细胞反应偏向Th1表型

NVX-CoV2373 是根据新冠病毒(rSARS-CoV-2)刺突蛋白---S 蛋白的S1 与S2 段基因序列改造而成的重组预融合蛋白纳米粒子疫苗(rSARS-CoV-2),以Matrix-M1为佐剂。近日研究人员开展I-II期研究,评估了疫苗的安全性和免疫效果。
 
本次研究为随机、安慰剂对照试验,评估5μg和25μg 2个剂量,添加或不添加Matrix-M1佐剂佐剂的情况下,疫苗在131名健康成年人中的安全性和免疫原性。在I期临床研究阶段,参与者接受2次疫苗肌肉注射,间隔21天。研究的主要结果为免疫原性、实验室血清化学和血液学评估、安全性(根据食品和药物管理局毒性评分)以及IgG抗尖峰蛋白反应(酶联免疫吸附试验[ELISA])。次要结果包括不良事件、野生型病毒中和(微中和试验)和T细胞反应(细胞因子染色)。将IgG和微中和试验结果与来自Covid-19患者恢复期血清样本进行比较。
 
83名参与者接受含佐剂疫苗,25名参与者接受不含佐剂疫苗,23名参与者接受安慰剂。未发现严重不良事件,大多数参与者未报告不良事件或仅出现轻微不良反应,不良事件的报告多来自佐剂组,且持续时间短(平均≤2天)。1名参与者有轻微发烧,持续1天。添加佐剂可增强疫苗的免疫反应,并诱导T辅助因子1(Th1)反应。含佐剂的5μg剂量疫苗2次注射后诱导的平均几何抗尖峰IgG含量(63160个ELISA单位)和中和反应(3906)程度均超过了Covid-19患者的恢复期血清抗体水平(分别为8344和983)。
 
疫苗免疫应答效果
研究认为,NVX-CoV2373疫苗是安全的,其诱导接种者的免疫反应水平超过了Covid-19患者恢复期血清抗体水平,添加Matrix-M1佐剂后,诱导的CD4+T细胞反应偏向Th1表型。
 
原始出处:
 
Cheryl Keech et al. Phase 1-2 Trial of a SARS-CoV-2 Recombinant Spike Protein Nanoparticle Vaccine. N Engl J Med, December 10, 2020.

 

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    2020-12-11 ms4000000564860225

    新冠疫苗早日投入使用

    0

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    2020-12-11 Jessie Zhang

    NVX-CoV2373疫苗表现出良好的安全性及免疫效果

    0

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    2020-12-10 旺医

    顶刊就是顶刊,谢谢梅斯带来这么高水平的研究报道,我们科里同事经常看梅斯,分享梅斯上的信息

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=2054246, encodeId=fc1f205424635, content=<a href='/topic/show?id=c0772904939' target=_blank style='color:#2F92EE;'>#免疫效果#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=29049, encryptionId=c0772904939, topicName=免疫效果)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=18b32500069, createdName=108807375_62823127, createdTime=Sat Aug 21 14:53:53 CST 2021, time=2021-08-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1318200, encodeId=b12913182002e, content=<a href='/topic/show?id=c0e1131645d' target=_blank style='color:#2F92EE;'>#NVX-CoV2373#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13164, encryptionId=c0e1131645d, topicName=NVX-CoV2373)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ec37461, createdName=szhvet, createdTime=Sat Dec 12 09:53:53 CST 2020, time=2020-12-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=907148, encodeId=5be490e1486f, content=新冠疫苗早日投入使用, beContent=null, objectType=article, channel=null, level=null, likeNumber=94, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20201209/687e75dfd0b74690b374fb3656555f4f/5695e97193bf475e8dcc635a653c8963.jpg, createdBy=7b385442016, createdName=ms4000000564860225, createdTime=Fri Dec 11 20:26:16 CST 2020, time=2020-12-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=907054, encodeId=c6c390e05418, content=NVX-CoV2373疫苗表现出良好的安全性及免疫效果, 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/20201120/5008534db22c474a844fbd107ff83af2/d3e20fc133b542208ff15e7f2b575329.jpg, createdBy=c7015311102, createdName=Jessie Zhang, createdTime=Fri Dec 11 14:25:01 CST 2020, time=2020-12-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1035521, encodeId=2ac1103552133, content=顶刊就是顶刊,谢谢梅斯带来这么高水平的研究报道,我们科里同事经常看梅斯,分享梅斯上的信息, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=旺医, createdTime=Thu Dec 10 21:53:53 CST 2020, time=2020-12-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1047241, encodeId=75d1104e24150, content=疗效只是效果的众多方面之一,还要看对患者的获益,包括生活质量等因素共同决定效果的, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=CHANGE, createdTime=Thu Dec 10 21:53:53 CST 2020, time=2020-12-10, status=1, ipAttribution=)]
    2020-12-10 CHANGE

    疗效只是效果的众多方面之一,还要看对患者的获益,包括生活质量等因素共同决定效果的

    0

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