NEJM:高福院士发文阐述国产疫苗对最新奥密克戎BA.4/5效果

2022-07-07 MedSci原创 MedSci原创

目前已是新冠病毒流行第3年,而且以omicron 变体为主,当下在全球,omicron正从BA.2.12.1感染转向BA.4/5,最新一期新技《新英格兰医学杂志》上发表高福院士的论文,文章中分析国内灭

目前已是新冠病毒流行第3年,而且以omicron 变体为主,当下在全球,omicron正从BA.2.12.1感染转向BA.4/5,最新一期新技《新英格兰医学杂志》上发表高福院士的论文,文章中分析国内灭活疫苗,异源接种,以及重组蛋白疫苗ZF2001接种以后,对最新的omicron的作用,值得关注。

在这项研究中,我们使用假病毒测定来评估从疫苗接种者获得的血清样本中针对 SARS-CoV-2 原型 (PT) 分离物和针对 omicron 子变体 BA.1、BA.1.1、BA.2、BA.2.12.1、BA.3、BA.4 和 BA.5 的中和抗体滴度进行检测。 接种者已经接受了三剂在中国广泛使用的两种灭活病毒疫苗(CoronaVac 和 BBIBP-CorV)中的一种,三剂蛋白质亚单位疫苗 ZF2001(使用二聚体受体结合域 [RBD] 作为 抗原),或由两剂 CoronaVac灭活疫苗后,采用ZF2001 异源增强接种情况。

由于,文章发表时,以BA.2.12.1流行为主,而目前全球流行已转向BA.4/5,因此,以下内容根据原文的数据进行重新解读

Panels A:显示各个亚变体的突变状况BA.1, BA.1.1, BA.2, BA.2.12.1, BA.3, BA.4, and BA.5.

在Panels B-F中,显示针对所列 PT 分离株和 omicron 子变体 BA.2、BA.2.12.1、BA.4 和 BA.5 的 50% 假病毒中和效价 (pVNT50)。 样本根据疫苗类型和免疫策略进行分组。同时,所有结果是接种最后一针后1个月进行检测的结果。

Panels B: B显示20 名接种者,他们每隔 1 个月接种 3 次 ZF2001 疫苗。

Panel C:9名接种者,其中第2,3针间隔2个月。

Panel D:15名接种者,采用延长间隔的方法,即第二,三针间隔4-6个月的结果

Panel E:16名接种三剂灭活疫苗

Panel F:19名接种两剂灭活疫苗,然后再采用ZF2001作为异源加强针接种

Panel G:这是第6组,有16名接种者,接种三剂ZF2001疫苗(采用延长间隔策略),在接种最后一针4-7个月时的结果。

从上图可以看出(以下主要讲疫苗产生的中和抗体的作用,不包括细胞免疫,免疫记忆产生的保护作用):

(1)重组蛋白疫苗ZF2001间隔策略,效果最好,在接种第3针后1个月时,对BA.4/5的中和效价仍然能达到270!

(2)三针灭活疫苗产生的中和抗体对BA.4/5作用微弱,在接种最后1针的1个月后(应该是效果最好的时候),对BA.4/5的中和效价仅为19.6(这里不包括细胞免疫,免疫记忆产生的保护作用)。

(3)异源接种效果有所增强,但是2针灭活+1针重组蛋白,在接种1个月后,对BA.4/5的中和效价也仅30.8,作用也很微弱。

(4)即使按照ZF2001延长间隔策略,在接种4-7个月后(最后一针),对对BA.4/5的中和效价也仅有16.7,基本也失去了作用。

(5)BA.4/5的免疫逃逸作用强于BA.2.12.1,更强于BA.2。

图:ZF2001延长间隔策略接种时,对BA.4/5的中和作用快速下降!

总的来说,奥密克戎的快速变异,对疫苗存在巨大的挑战。一方面疫苗的作用整体表现不佳,另一方面,即使产生中和抗体,但是随着时间也会快速下降,导致保护作用欠佳。

因此,十分有必要研究针对新冠病毒的通用疫苗,否则很难应对如此快速的突变。

注:上述文字内容并非此篇文章的原文意思,由于文章发表时,仍然以BA.2.12.1流行为主。这篇文章只是针对结果进行的重新解读,与原文表述意思无关。上述解读,仅供专业人士参考与讨论。

参考资料:

Omicron SARS-CoV-2 Neutralization from Inactivated and ZF2001 Vaccines.NEJM,DOI: 10.1056/NEJMc2206900

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  2. [GetPortalCommentsPageByObjectIdResponse(id=1690550, encodeId=c63c16905507b, content=<a href='/topic/show?id=1c5e40e5120' target=_blank style='color:#2F92EE;'>#国产疫苗#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=40751, encryptionId=1c5e40e5120, topicName=国产疫苗)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=cd5229064990, createdName=wjcjjian, createdTime=Sat May 20 15:35:46 CST 2023, time=2023-05-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1736482, encodeId=35861e3648229, content=<a href='/topic/show?id=a421604e721' target=_blank style='color:#2F92EE;'>#最新#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=60477, encryptionId=a421604e721, topicName=最新)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=4bd534165494, createdName=贵阳, createdTime=Sun Jul 10 14:35:46 CST 2022, time=2022-07-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1231144, encodeId=d730123114455, content=#BA.4/5#<a href='/topic/show?id=bbcb291830a' target=_blank style='color:#2F92EE;'>#免疫逃逸#</a>确实厉害, beContent=null, objectType=article, channel=null, level=null, likeNumber=74, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=29183, encryptionId=bbcb291830a, topicName=免疫逃逸)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/Random/55971dc507c93968175ce7cc1e177b372a83869f.jpg, createdBy=f63e4754896, createdName=小小医者, createdTime=Thu Jul 07 14:15:10 CST 2022, time=2022-07-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1231143, encodeId=069a1231143a5, content=<a href='/topic/show?id=4b6c10253599' target=_blank style='color:#2F92EE;'>#高福#</a>院士,牛!, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=102535, encryptionId=4b6c10253599, topicName=高福)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/Random/55971dc507c93968175ce7cc1e177b372a83869f.jpg, createdBy=f63e4754896, createdName=小小医者, createdTime=Thu Jul 07 14:14:21 CST 2022, time=2022-07-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1231138, encodeId=76231231138f5, content=<a href='/topic/show?id=8a4e10443423' target=_blank style='color:#2F92EE;'>#奥密克戎#</a>变种太快,最新的变种,几乎让所有的疫苗都不起作用了。当然,也许防重症有一定的作用?其实仍然值得可疑, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=104434, encryptionId=8a4e10443423, topicName=奥密克戎)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/Random/55971dc507c93968175ce7cc1e177b372a83869f.jpg, createdBy=f63e4754896, createdName=小小医者, createdTime=Thu Jul 07 14:08:10 CST 2022, time=2022-07-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1243786, encodeId=e9301243e8641, content=NEJM上果然牛,感谢梅斯更新及时, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=小元, createdTime=Thu Jul 07 11:35:46 CST 2022, time=2022-07-07, status=1, ipAttribution=)]
    2022-07-10 贵阳
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    2022-07-07 小小医者

    #BA.4/5##免疫逃逸#确实厉害

    0

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    2022-07-07 小小医者

    #高福#院士,牛!

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1690550, encodeId=c63c16905507b, content=<a href='/topic/show?id=1c5e40e5120' target=_blank style='color:#2F92EE;'>#国产疫苗#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=40751, encryptionId=1c5e40e5120, topicName=国产疫苗)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=cd5229064990, createdName=wjcjjian, createdTime=Sat May 20 15:35:46 CST 2023, time=2023-05-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1736482, encodeId=35861e3648229, content=<a href='/topic/show?id=a421604e721' target=_blank style='color:#2F92EE;'>#最新#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=60477, encryptionId=a421604e721, topicName=最新)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=4bd534165494, createdName=贵阳, createdTime=Sun Jul 10 14:35:46 CST 2022, time=2022-07-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1231144, encodeId=d730123114455, content=#BA.4/5#<a href='/topic/show?id=bbcb291830a' target=_blank style='color:#2F92EE;'>#免疫逃逸#</a>确实厉害, beContent=null, objectType=article, channel=null, level=null, likeNumber=74, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=29183, encryptionId=bbcb291830a, topicName=免疫逃逸)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/Random/55971dc507c93968175ce7cc1e177b372a83869f.jpg, createdBy=f63e4754896, createdName=小小医者, createdTime=Thu Jul 07 14:15:10 CST 2022, time=2022-07-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1231143, encodeId=069a1231143a5, content=<a href='/topic/show?id=4b6c10253599' target=_blank style='color:#2F92EE;'>#高福#</a>院士,牛!, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=102535, encryptionId=4b6c10253599, topicName=高福)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/Random/55971dc507c93968175ce7cc1e177b372a83869f.jpg, createdBy=f63e4754896, createdName=小小医者, createdTime=Thu Jul 07 14:14:21 CST 2022, time=2022-07-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1231138, encodeId=76231231138f5, content=<a href='/topic/show?id=8a4e10443423' target=_blank style='color:#2F92EE;'>#奥密克戎#</a>变种太快,最新的变种,几乎让所有的疫苗都不起作用了。当然,也许防重症有一定的作用?其实仍然值得可疑, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=104434, encryptionId=8a4e10443423, topicName=奥密克戎)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/Random/55971dc507c93968175ce7cc1e177b372a83869f.jpg, createdBy=f63e4754896, createdName=小小医者, createdTime=Thu Jul 07 14:08:10 CST 2022, time=2022-07-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1243786, encodeId=e9301243e8641, content=NEJM上果然牛,感谢梅斯更新及时, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=小元, createdTime=Thu Jul 07 11:35:46 CST 2022, time=2022-07-07, status=1, ipAttribution=)]
    2022-07-07 小小医者

    #奥密克戎#变种太快,最新的变种,几乎让所有的疫苗都不起作用了。当然,也许防重症有一定的作用?其实仍然值得可疑

    0

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    2022-07-07 小元

    NEJM上果然牛,感谢梅斯更新及时

    0

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