A recombinant receptor-binding domain in trimeric form generates protective immunity against SARS-CoV-2 infection in nonhuman primates

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Abstract

No abstract available

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  1. SciScore for 10.1101/2021.03.30.437647: (What is this?)

    Please note, not all rigor criteria are appropriate for all manuscripts.

    Table 1: Rigor

    Institutional Review Board Statementnot detected.
    Randomizationnot detected.
    Blindingnot detected.
    Power Analysisnot detected.
    Sex as a biological variableAnimals: Five Chinese-origin male rhesus macaques (Macaca mulatta, animal numbers: #140829, #140271, #163957, # 17361, #17321) weighing 4.1 to 8.7 kg and aged 3 to 6 years old were obtained from the Institute of Beijing Xieerxin Biology Resource Co., Ltd.
    Cell Line Authenticationnot detected.

    Table 2: Resources

    Antibodies
    SentencesResources
    Subsequently, the plates were incubated with an HRP-conjugated anti-human IgG antibody working solution at 37°C for 30 min and washed with PBST five times.
    anti-human IgG
    suggested: None
    After 1 h of incubation, the membranes were washed five times with TBS containing 0.1% Tween-20, incubated with horseradish peroxidase (HRP)-conjugated goat anti-rabbit IgG (0.1 μg/ml prepared in blocking buffer) as the secondary antibody for one h, and then washed 5 times.
    anti-rabbit IgG
    suggested: None
    The plates were then incubated with 2 μg/ml biotinylated anti-human IFNγ antibody for 1 h at room temperature, washed six times with sterile PBST, and incubated for 1 h at room temperature with streptavidin–HRP.
    anti-human IFNγ
    suggested: None
    Afterward, the cells were washed and surface stained with antibodies against human CD4 (FITC-conjugated), CD8α (FITC-conjugated), and CD44 (FITC-conjugated) for 30 min at room temperature.
    human CD4
    suggested: (RayBiotech Cat# CS-11-0133, RRID:AB_1228052)
    CD8α
    suggested: None
    CD44
    suggested: None
    Cells were then washed and incubated with anti-human IFN-γ antibodies (PE-conjugated) for 1 h at room temperature, washed with permeabilization buffer, and fixed in 1% paraformaldehyde.
    anti-human IFN-γ
    suggested: None
    The immunohistochemical reaction was performed on paraffin-embedded lung sections using a rabbit anti-SARS-CoV-2-NP monoclonal antibody followed by an HRP-conjugated goat anti-rabbit secondary antibody as described.
    anti-SARS-CoV-2-NP
    suggested: None
    anti-rabbit
    suggested: None
    Experimental Models: Cell Lines
    SentencesResources
    The virus NMDC accession number is NMDCN0000HUI; the isolation strain is 20SF107, which was isolated and titrated in Vero-E6 cells.
    Vero-E6
    suggested: None
    The fused protein was expressed in transfected HEK293 cells and secreted into the cell culture medium.
    HEK293
    suggested: CLS Cat# 300192/p777_HEK293, RRID:CVCL_0045)
    Software and Algorithms
    SentencesResources
    Statistical analysis: All statistical analyses were performed using GraphPad Prism 8.0 software (GraphPad Software, CA, USA).
    GraphPad Prism
    suggested: (GraphPad Prism, RRID:SCR_002798)
    GraphPad
    suggested: (GraphPad Prism, RRID:SCR_002798)

    Results from OddPub: We did not detect open data. We also did not detect open code. Researchers are encouraged to share open data when possible (see Nature blog).


    Results from LimitationRecognizer: An explicit section about the limitations of the techniques employed in this study was not found. We encourage authors to address study limitations.

    Results from TrialIdentifier: No clinical trial numbers were referenced.


    Results from Barzooka: We found bar graphs of continuous data. We recommend replacing bar graphs with more informative graphics, as many different datasets can lead to the same bar graph. The actual data may suggest different conclusions from the summary statistics. For more information, please see Weissgerber et al (2015).


    Results from JetFighter: We did not find any issues relating to colormaps.


    Results from rtransparent:
    • Thank you for including a conflict of interest statement. Authors are encouraged to include this statement when submitting to a journal.
    • Thank you for including a funding statement. Authors are encouraged to include this statement when submitting to a journal.
    • No protocol registration statement was detected.

    About SciScore

    SciScore is an automated tool that is designed to assist expert reviewers by finding and presenting formulaic information scattered throughout a paper in a standard, easy to digest format. SciScore checks for the presence and correctness of RRIDs (research resource identifiers), and for rigor criteria such as sex and investigator blinding. For details on the theoretical underpinning of rigor criteria and the tools shown here, including references cited, please follow this link.