Evidence map›Paper›PMID 33208827›Full record

ArticleScientific reports2020

Development of CpG-adjuvanted stable prefusion SARS-CoV-2 spike antigen as a subunit vaccine against COVID-19.

Tsun-Yung Kuo, Meei-Yun Lin, Robert L Coffman, John D Campbell, Paula Traquina, Yi-Jiun Lin, Luke Tzu-Chi Liu, Jinyi Cheng, Yu-Chi Wu, Chung-Chin Wu and 4 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 107 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
107citing papers in PubMed, 1 pooled it
3.7field-weighted citation impact, top 4% 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

107 citing papers in PubMed, 1 synthesis or guideline pooled it, 179 citations in OpenAlex.

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  7. Molecular mechanisms of SARS-CoV-2 entry: implications for biomedical strategies.Microbiology and molecular biology reviews : MMBR · 2025
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47 more citing papers are in PubMed but not listed here.

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

14 authors at 4 institutions in 2 countries.

Tsun-Yung KuoMedigen Vaccine Biologics Corporation, Taipei, Taiwan.
Meei-Yun LinMedigen Vaccine Biologics Corporation, Taipei, Taiwan.
Robert L CoffmanDynavax Technologies, Emeryville, CA, 94608, USA.
John D CampbellDynavax Technologies, Emeryville, CA, 94608, USA.
Paula TraquinaDynavax Technologies, Emeryville, CA, 94608, USA.
Yi-Jiun LinMedigen Vaccine Biologics Corporation, Taipei, Taiwan.
Luke Tzu-Chi LiuMedigen Vaccine Biologics Corporation, Taipei, Taiwan.
Jinyi ChengMedigen Vaccine Biologics Corporation, Taipei, Taiwan.
Yu-Chi WuMedigen Vaccine Biologics Corporation, Taipei, Taiwan.
Chung-Chin WuMedigen Vaccine Biologics Corporation, Taipei, Taiwan.
Wei-Hsuan TangMedigen Vaccine Biologics Corporation, Taipei, Taiwan.
Chung-Guei HuangDepartment of Laboratory Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan City, Taiwan.
Kuo-Chien TsaoDepartment of Laboratory Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan City, Taiwan.
Charles ChenMedigen Vaccine Biologics Corporation, Taipei, Taiwan. charles@medigenvac.com.
Dynavax Technologies (United States) · USLinkou Chang Gung Memorial Hospital · TWNational Ilan University · TWTemple University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The COVID-19 pandemic is a worldwide health emergency which calls for an unprecedented race for vaccines and treatment. In developing a COVID-19 vaccine, we applied technology previously used for MERS-CoV to produce a prefusion-stabilized SARS-CoV-2 spike protein, S-2P. To enhance immunogenicity and mitigate the potential vaccine-induced immunopathology, CpG 1018, a Th1-biasing synthetic toll-like receptor 9 (TLR9) agonist was selected as an adjuvant candidate. S-2P in combination with CpG 1018 and aluminum hydroxide (alum) was found to be the most potent immunogen and induced high titer of neutralizing antibodies in sera of immunized mice against pseudotyped lentivirus reporter or live wild-type SARS-CoV-2. In addition, the antibodies elicited were able to cross-neutralize pseudovirus containing the spike protein of the D614G variant, indicating the potential for broad spectrum protection. A marked Th1 dominant response was noted from cytokines secreted by splenocytes of mice immunized with CpG 1018 and alum. No vaccine-related serious adverse effects were found in the dose-ranging study in rats administered single- or two-dose regimens of S-2P combined with CpG 1018 alone or CpG 1018 with alum. These data support continued development of CHO-derived S-2P formulated with CpG 1018 and alum as a candidate vaccine to prevent COVID-19 disease.

Indexed as

Immunogenicity, VaccineAdjuvants, ImmunologicAluminum HydroxideAnimalsAntibodies, NeutralizingAntibodies, ViralCHO CellsCOVID-19 VaccinesCricetinaeCricetulusCytokinesFemaleHEK293 CellsHumansMiceMice, Inbred BALB C1018 oligonucleotideAdjuvants, ImmunologicAluminum HydroxideAntibodies, NeutralizingAntibodies, ViralCOVID-19 VaccinesCytokinesOligodeoxyribonucleotidesSpike Glycoprotein, Coronavirusspike protein, SARS-CoV-2

Identifiers

PMID33208827
PMCPMC7676267
OpenAlexW3105914759

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.