Evidence map›Paper›PMID 34289779›Full record

ArticleEmerging microbes & infections2021

Recombinant chimpanzee adenovirus AdC7 expressing dimeric tandem-repeat spike protein RBD protects mice against COVID-19.

Kun Xu, Yaling An, Qunlong Li, Weijin Huang, Yuxuan Han, Tianyi Zheng, Fang Fang, Hui Liu, Chuanyu Liu, Ping Gao and 13 more

Open access · goldAbstract read
In one paragraph

Article in Emerging microbes & infections, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
3.5field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 23 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

23 authors at 9 institutions in 6 countries.

Kun XuKey Laboratory of Tropical Translational Medicine of Ministry of Education, School of Tropical Medicine and Laboratory Medicine, The First Affiliated Hospital, Hainan Medical University, Haikou, People's Republic of China.ORCID https://orcid.org/0000-0002-9762-5001
Yaling AnSavaid Medical School, University of Chinese Academy of Sciences, Beijing, People's Republic of China.
Qunlong LiChengdu Kanghua Biological Products Co., Ltd, Chengdu, People's Republic of China.
Weijin HuangDivision of HIV/AIDS and Sex-Transmitted Virus Vaccines, Institute for Biological Product Control, National Institutes for Food and Drug Control (NIFDC), Beijing, People's Republic of China.
Yuxuan HanSavaid Medical School, University of Chinese Academy of Sciences, Beijing, People's Republic of China.
Tianyi ZhengResearch Network of Immunity and Health (RNIH), Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing, People's Republic of China.
Fang FangChengdu Kanghua Biological Products Co., Ltd, Chengdu, People's Republic of China.
Hui LiuChengdu Kanghua Biological Products Co., Ltd, Chengdu, People's Republic of China.
Chuanyu LiuLaboratory of Animal Infectious Diseases, College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning, People's Republic of China.
Ping GaoResearch Network of Immunity and Health (RNIH), Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing, People's Republic of China.
Senyu XuResearch Network of Immunity and Health (RNIH), Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing, People's Republic of China.
Xueyuan LiuSchool of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China.
Rong ZhangLaboratory of Animal Infectious Diseases, College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning, People's Republic of China.
Xin ZhaoCAS Key Laboratory of Pathogen Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, People's Republic of China.
William J LiuNational Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China.
Yuhai BiCAS Key Laboratory of Pathogen Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, People's Republic of China.ORCID https://orcid.org/0000-0002-5595-363X
Youchun WangDivision of HIV/AIDS and Sex-Transmitted Virus Vaccines, Institute for Biological Product Control, National Institutes for Food and Drug Control (NIFDC), Beijing, People's Republic of China.
Dongming ZhouDepartment of Pathogen Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, People's Republic of China.
Qinghan WangChengdu Kanghua Biological Products Co., Ltd, Chengdu, People's Republic of China.
Wenli HouChengdu Kanghua Biological Products Co., Ltd, Chengdu, People's Republic of China.
Qianfeng XiaKey Laboratory of Tropical Translational Medicine of Ministry of Education, School of Tropical Medicine and Laboratory Medicine, The First Affiliated Hospital, Hainan Medical University, Haikou, People's Republic of China.
George F GaoResearch Network of Immunity and Health (RNIH), Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing, People's Republic of China.ORCID https://orcid.org/0000-0002-3869-615X
Lianpan DaiKey Laboratory of Tropical Translational Medicine of Ministry of Education, School of Tropical Medicine and Laboratory Medicine, The First Affiliated Hospital, Hainan Medical University, Haikou, People's Republic of China.ORCID https://orcid.org/0000-0001-8352-1327
Chinese Academy of Sciences · CNBiological E (India) · INGuangxi University · CNNational Institutes for Food and Drug Control · CNUniversity of Chinese Academy of Sciences · CNHainan Medical University · CNShandong University · CNTaiwan Centers for Disease Control · TWTianjin Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A safe and effective vaccine is urgently needed to control the unprecedented COVID-19 pandemic. Four adenovirus-vectored vaccines expressing spike (S) protein have been approved for use. Here, we generated several recombinant chimpanzee adenovirus (AdC7) vaccines expressing S, receptor-binding domain (RBD), or tandem-repeat dimeric RBD (RBD-tr2). We found vaccination via either intramuscular or intranasal route was highly immunogenic in mice to elicit both humoral and cellular immune responses. AdC7-RBD-tr2 showed higher antibody responses compared to either AdC7-S or AdC7-RBD. Intranasal administration of AdC7-RBD-tr2 additionally induced mucosal immunity with neutralizing activity in bronchoalveolar lavage fluid. Either single-dose or two-dose mucosal administration of AdC7-RBD-tr2 protected mice against SARS-CoV-2 challenge, with undetectable subgenomic RNA in lung and relieved lung injury. AdC7-RBD-tr2-elicted sera preserved the neutralizing activity against the circulating variants, especially the Delta variant. These results support AdC7-RBD-tr2 as a promising COVID-19 vaccine candidate.

Indexed as

AdenoviridaeAdministration, IntranasalAnimalsAntibodies, NeutralizingAntibodies, ViralChlorocebus aethiopsCOVID-19COVID-19 VaccinesFemaleGenetic VectorsHEK293 CellsHumansImmunogenicity, VaccineInjections, IntramuscularMiceMice, Inbred BALB CAntibodies, NeutralizingAntibodies, ViralCOVID-19 VaccinesSpike Glycoprotein, Coronavirusspike protein, SARS-CoV-2adenovirusantibodyCOVID-19immune responseSARS-CoV-2vaccine

Identifiers

PMID34289779
PMCPMC8366625
OpenAlexW3186302389

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.