Evidence map›Paper›PMID 34267349›Full record

Trial reportCell research2021

Interferon-armed RBD dimer enhances the immunogenicity of RBD for sterilizing immunity against SARS-CoV-2.

Shiyu Sun, Yueqi Cai, Tian-Zhang Song, Yang Pu, Lin Cheng, Hairong Xu, Jing Sun, Chaoyang Meng, Yifan Lin, Haibin Huang and 16 more

Erratum issuedOpen access · hybridAbstract readClinical Trial, Phase IClinical Trial, Phase IIRandomized Controlled Trial
In one paragraph

Trial report in Cell research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

48 citing papers in PubMed, 77 citations in OpenAlex.

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  6. Augmented humoral responses to HIV Env trimers delivered as transmembrane immunogens by self-replicating RNA.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Article
  7. Molecular mechanisms of SARS-CoV-2 entry: implications for biomedical strategies.Microbiology and molecular biology reviews : MMBR · 2025
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

26 authors at 8 institutions in 2 countries.

Shiyu Sun *Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.
Yueqi Cai *Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.
Tian-Zhang Song *Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.
Yang Pu *Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Beijing, China.
Lin ChengInstitute for Hepatology, National Clinical Research Center for Infectious Disease, Shenzhen Third People's Hospital, Shenzhen, Guangdong Province, China.
Hairong XuKey Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.
Jing SunState Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
Chaoyang MengKey Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.
Yifan LinKey Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.
Haibin HuangLivzonBio, Inc., Zhuhai, Guangdong, China.
Fang ZhaoLivzonBio, Inc., Zhuhai, Guangdong, China.
Silin ZhangSchool of Pharmaceutical Sciences, Tsinghua University, Beijing, China.
Yu GaoUniversity of Chinese Academy of Sciences, Beijing, China.
Jian-Bao HanKunming National High-level Biosafety Research Center for Non-human Primates, Center for Biosafety Mega-Science, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.
Xiao-Li FengKunming National High-level Biosafety Research Center for Non-human Primates, Center for Biosafety Mega-Science, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.
Dan-Dan YuKey Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.
Yalan ZhuKey Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.
Pu GaoKey Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.
Haidong TangSchool of Pharmaceutical Sciences, Tsinghua University, Beijing, China.
Jincun ZhaoState Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
Zheng ZhangInstitute for Hepatology, National Clinical Research Center for Infectious Disease, Shenzhen Third People's Hospital, Shenzhen, Guangdong Province, China.ORCID http://orcid.org/0000-0002-3544-1389
Jiaming YangLivzonBio, Inc., Zhuhai, Guangdong, China.
Zhenxiang HuLivzonBio, Inc., Zhuhai, Guangdong, China.
Yang-Xin FuDepartment of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA. Yang-Xin.Fu@UTSouthwestern.edu.ORCID http://orcid.org/0000-0001-8441-6617
Yong-Tang ZhengKey Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China. zhengyt@mail.kiz.ac.cn.ORCID http://orcid.org/0000-0001-5469-0324
Hua PengKey Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China. hpeng@moon.ibp.cas.cn.ORCID http://orcid.org/0000-0002-2482-5475
Chinese Academy of Sciences · CNKunming Institute of Zoology · CNFirst Affiliated Hospital of Guangzhou Medical University · CNShenzhen Third People’s Hospital · CNTsinghua University · CNChinese Academy of Medical Sciences & Peking Union Medical College · CNGuangzhou Regenerative Medicine and Health Guangdong Laboratory · CNSouthwestern Medical Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused a global crisis, urgently necessitating the development of safe, efficacious, convenient-to-store, and low-cost vaccine options. A major challenge is that the receptor-binding domain (RBD)-only vaccine fails to trigger long-lasting protective immunity if used alone for vaccination. To enhance antigen processing and cross-presentation in draining lymph nodes (DLNs), we developed an interferon (IFN)-armed RBD dimerized by an immunoglobulin fragment (I-R-F). I-R-F efficiently directs immunity against RBD to DLNs. A low dose of I-R-F induces not only high titers of long-lasting neutralizing antibodies (NAbs) but also more comprehensive T cell responses than RBD. Notably, I-R-F provides comprehensive protection in the form of a one-dose vaccine without an adjuvant. Our study shows that the pan-epitope modified human I-R-F (I-P-R-F) vaccine provides rapid and complete protection throughout the upper and lower respiratory tracts against a high-dose SARS-CoV-2 challenge in rhesus macaques. Based on these promising results, we have initiated a randomized, placebo-controlled, phase I/II trial of the human I-P-R-F vaccine (V-01) in 180 healthy adults, and the vaccine appears safe and elicits strong antiviral immune responses. Due to its potency and safety, this engineered vaccine may become a next-generation vaccine candidate in the global effort to overcome COVID-19.

Indexed as

AdolescentAdultAnimalsAntibodies, NeutralizingAntibodies, ViralAntiviral AgentsCell LineChlorocebus aethiopsCOVID-19COVID-19 VaccinesDouble-Blind MethodFemaleHEK293 CellsHumansImmunogenicity, VaccineInterferonsAntibodies, NeutralizingAntibodies, ViralAntiviral AgentsCOVID-19 VaccinesInterferons

Identifiers

PMID34267349
PMCPMC8280646
OpenAlexW3181157775

What OpenQuestion holds

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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.