Human immunoglobulin from transchromosomic bovines hyperimmunized with SARS-CoV-2 spike antigen efficiently neutralizes viral variants

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Abstract

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  1. SciScore for 10.1101/2021.02.06.430072: (What is this?)

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

    Table 1: Rigor

    Institutional Review Board StatementIACUC: The animal protocols contained in the study were approved by SAB Biotherapeutic Institutional Animal Care and Use Committee (IACUC).
    Randomizationnot detected.
    Blindingnot detected.
    Power Analysisnot detected.
    Sex as a biological variablenot detected.
    Cell Line Authenticationnot detected.

    Table 2: Resources

    Antibodies
    SentencesResources
    Determination of SARS CoV-2 spike protein-specific human IgG antibody titers was performed in Maxisorp Immuno 96-well ELISA plates (Thermo Scientific) coated overnight at 4°C with 100 μl/well of 2 μg ml−1 recombinant SARS CoV-2 spike protein produced and purified from 293 cells in PBS.
    human IgG
    suggested: None
    After final washing with PBST, the bound anti-spike antibodies were detected colorimetrically by using the 3, 3,’ 5, 5’-tetramethylbenzidine (TMB) substrate kit (SeraCare).
    anti-spike
    suggested: None
    Experimental Models: Cell Lines
    SentencesResources
    VSV-SARS-CoV-2 plaque assays were performed on Vero and Vero E6-TMPRSS2 cells.
    Vero E6-TMPRSS2
    suggested: None
    SAB-185 pAb-virus complexes then were added to Vero E6 cells in 96-well plates and incubated at 37 °C for 7.5 h.
    Vero E6
    suggested: None
    Experimental Models: Organisms/Strains
    SentencesResources
    The Tc bovines used in this study are homozygous for either triple or quadruple knock-outs in the endogenous bovine immunoglobulin genes (IGHM − / − IGHML1 − / − IGL − / − or IGHM − / − IGHML1 − / − IGL − / − /IGK− / −) and carry a human artificial chromosome (HAC) vector labeled as isKcHACD with an IgG1 production bias.
    IGHM − / − IGHML1 − / − IGL − / − or IGHM − / − IGHML1 − / − IGL − / − /IGK− / −
    suggested: None
    Software and Algorithms
    SentencesResources
    Plasma was collected using an automated plasmapheresis system (Baxter Healthcare, Autopheresis C Model 200).
    Baxter Healthcare
    suggested: None

    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: We found the following clinical trial numbers in your paper:

    IdentifierStatusTitle
    NCT02788188CompletedSafety, Tolerability, and Pharmacokinetics of SAB-301 in Hea…
    NCT02508584CompletedPersonalized Immunotherapeutic for Antibiotic-resistant Infe…
    NCT04468958RecruitingSafety, Tolerability, and Pharmacokinetics of SAB-185 in Hea…
    NCT0446917Trial number did not resolve on clinicaltrials.gov. Is the number correct?NA


    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.