Prime-boost vaccination regimens with INO-4800 and INO-4802 augment and broaden immune responses against SARS-CoV-2 in nonhuman primates

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Abstract

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  1. SciScore for 10.1101/2021.10.27.466163: (What is this?)

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

    Table 1: Rigor

    EthicsIACUC: Animal Immunizations, sample collection: All rhesus macaque experiments were approved by the Institutional Animal Care and Use Committee at Bioqual (Rockville, Maryland), an Association for Assessment and Accreditation of Laboratory Animal Care (AAALAC) International accredited facility.
    Sex as a biological variableNine Chinese rhesus macaques, five males and four females roughly 4 years of age (weights ranging from 4.48kg-8.50kg) were randomized prior to immunization and received one or two injections at 1mg per dose of INO-4800, at weeks 0 and 4 by intradermal electroporation (ID-EP) administration using the CELLECTRA 2000® Adaptive Constant Current Electroporation Device with a 3P array (Inovio Pharmaceuticals).
    RandomizationNine Chinese rhesus macaques, five males and four females roughly 4 years of age (weights ranging from 4.48kg-8.50kg) were randomized prior to immunization and received one or two injections at 1mg per dose of INO-4800, at weeks 0 and 4 by intradermal electroporation (ID-EP) administration using the CELLECTRA 2000® Adaptive Constant Current Electroporation Device with a 3P array (Inovio Pharmaceuticals).
    Blindingnot detected.
    Power Analysisnot detected.
    Cell Line Authenticationnot detected.

    Table 2: Resources

    Antibodies
    SentencesResources
    Flow Cytometry: Thawed, cryopreserved PBMCs were assessed to determine the frequency of circulating T follicular helper (Tfh) using a panel which included the following antibodies: CD3 (BD Biosciences; clone SP34-2), CD4 (BD Biosciences; clone L200), CXCR5 (eBioscience; clone MU5UBEE), and PD-1 (BioLegend; clone EH12.2H7).
    CD3
    suggested: None
    CD4
    suggested: None
    CXCR5
    suggested: None
    PD-1
    suggested: None
    Experimental Models: Cell Lines
    SentencesResources
    To assess the extent of which neutralizing antibodies are present in the sera, CHO cells stably expressing ACE2 (ACE2-CHOs – Creative Biolabs) were used as target cells at 10,000 cells/well.
    CHO
    suggested: None
    Recombinant DNA
    SentencesResources
    The final sequence was subcloned into the pGX0001 vector (BamHI/XhoI) and synthesized (Genscript, Piscataway, NJ).
    pGX0001
    suggested: None
    Software and Algorithms
    SentencesResources
    Neutralization titers (ID50) were calculated using GraphPad Prism 8 and defined as the reciprocal serum dilution that is reduced by 50% compared to the signal in the infected control wells.
    GraphPad Prism
    suggested: (GraphPad Prism, RRID:SCR_002798)
    Samples were acquired on a BD Celesta flow cytometer and analysed using FlowJo software version 10.7 (Treestar Inc.).
    FlowJo
    suggested: (FlowJo, RRID:SCR_008520)

    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 did not find any issues relating to the usage of bar graphs.


    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.

    Results from scite Reference Check: We found no unreliable references.


    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.