Lancet:重组腺病毒新冠肺炎疫苗I期临床获得成功

2020-05-23 MedSci原创 MedSci原创

重组腺病毒5型(AD5) COVID-19疫苗具有较好的耐受性,在注射后28天可产生免疫性

新冠肺炎疫苗是目前最为紧需的医疗资源,近日研究人员评估了重组腺病毒5型(AD5) COVID-19疫苗的安全性、耐受性和免疫原性。
 
本次研究在武汉进行,为AD5Vectored Covid-19疫苗的剂量递增I期试验。 年龄在18至60岁之间的健康成年人随机接受5×1010, 1×1011或1.5×1011病毒颗粒剂量疫苗肌肉注射。 研究的主要结果是接种后7天的不良事件。接种后28天内对安全性进行评估,采用ELISA测定特异性抗体,以及疫苗接种引起的中和抗体反应。
 
2020年3月16-27日期间,108名志愿者参与研究,参与者中男性占51%,平均年龄36.3岁,其中低剂量组36人,中等剂量组36人,高剂量组36人。低剂量组30名参与者(83%)在疫苗注射后前7天报告了不良事件,中等及高剂量组分别为83%和75%。最常见的注射部位不良事件为疼痛,54%的患者报告存在疼痛,最常见的系统性不良事件为发热(46%)、疲劳(44%)、头痛(39%)和肌肉痛(17%)。所有剂量组的不良事件较为温和,在注射后28天未发生严重不良事件。ELISA抗体及中和抗体检测发现,在疫苗注射后14天,抗体含量显著增加,在28天达到顶峰,在疫苗注射后14天特异性T细胞响应达到顶峰。
 
研究认为,重组腺病毒5型(AD5) COVID-19疫苗具有较好的耐受性,在注射后28天可产生免疫性。
 
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    2020-07-23 howi
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    2020-08-27 14818eb4m67暂无昵称

    学习了

    0

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    2020-05-23 公卫新人

    新冠肺炎,疫情何时才能消失

    0

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    2020-05-23 goodbing

    顶刊就是不一样,质量很高,内容精彩!学到很多

    0

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研发团队曾称,该疫苗最快今年9月即可上市!而且最近几款疫苗在研发中,均曝出好消息,均能产生抗体,全球一片欢呼,抗疫有望!

CELL:我国研究人员从患者中鉴定出抗SARS-CoV-2的潜在中和抗体 

在此,我国研究人员报导,通过对60例康复期患者的抗原富集B细胞进行高通量单细胞RNA和VDJ测序,其快速鉴定出了SARS-CoV-2中和抗体。

疫苗进展如何了?中国领跑全球,四个新冠疫苗进入临床试验

5月10日消息,美国约翰斯·霍普金斯大学发布的实时统计数据显示,截至北京时间5月10日6时30分,全球累计确诊新冠肺炎病例4008497例,累计死亡病例278135例。

Science:用人造蛋白质来设计疫苗,其前景极其广阔

导言:重新设计蛋白质的最终目的是创造具有新生物学功能的蛋白质。从结构的角度来看,这仍然是一个挑战,因为天然蛋白质中的大多数生物功能是由不规则和不连续的结构基序介导的。相比之下,最新的蛋白质设计技术在设

辉瑞在美启动新冠疫苗人体试验,希望9月获紧急使用授权入市

美国制药巨头辉瑞(Pfizer)开始进行新冠肺炎疫苗的试验性人体测试。