The ChAdOx1 vectored vaccine, AZD2816, induces strong immunogenicity against SARS-CoV-2 beta (B.1.351) and other variants of concern in preclinical studies

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Abstract

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  1. SciScore for 10.1101/2021.06.08.447308: (What is this?)

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

    Table 1: Rigor

    EthicsIACUC: Ethics Statement: Mice were used in accordance with the UK Animals (Scientific Procedures) Act 1986 under project license number P9804B4F1 granted by the UK Home Office with approval from the local Animal Welfare and Ethical Review Board (AWERB) at the University of Oxford.
    Sex as a biological variablenot detected.
    RandomizationAge matched animals were purchased from commercial suppliers as a batch for each experiment and randomly split into groups on arrival at our facility.
    Blindingnot detected.
    Power Analysisnot detected.
    Cell Line Authenticationnot detected.

    Table 2: Resources

    Antibodies
    SentencesResources
    Following washing, bound antibodies were detected by addition of a 1 in 5000 dilution of alkaline phosphatase (AP)-conjugated goat anti-mouse IgG (Sigma-Aldrich) for 1 hour at RT and addition of p-Nitrophenyl Phosphate, Disodium Salt substrate (Sigma-Aldrich).
    anti-mouse IgG
    suggested: None
    Experimental Models: Cell Lines
    SentencesResources
    R71007), a derivative of HEK293 cells which constitutively express the Tet repressor protein and prevent antigen expression during virus production.
    HEK293
    suggested: CLS Cat# 300192/p777_HEK293, RRID:CVCL_0045)
    Lentiviral-based SARS-CoV-2 pseudotyped viruses were generated in HEK293T cells incubated at 37 °C, 5% CO2 as previously described 23.
    HEK293T
    suggested: None
    Experimental Models: Organisms/Strains
    SentencesResources
    Animals and Immunizations: Inbred BALB/cOlaHsd (BALB/c) (Envigo) (n=5 to 7 mice per group), were immunized intramuscularly (i.m.) in the musculus tibialis with 108 infectious units (iu) of ChAdOx1 vector.
    BALB/c
    suggested: None
    Recombinant DNA
    SentencesResources
    Briefly, cells were seeded at a density of 7.5 × 105 in 6 well dishes, before being transfected with plasmids as follows: 500 ng of SARS-CoV-2 spike (NC_045512, B.1.351, B.1.617.1, B.1.617.2) (Table S1), 600 ng p8.91 (encoding for HIV-1 gag-pol), 600 ng CSFLW
    p8.91
    suggested: None
    A ‘no glycoprotein’ control was also set up using the pcDNA3.1 vector instead of the SARS-CoV-2 Spike expressing plasmid.
    pcDNA3.1
    suggested: RRID:Addgene_79663)
    Software and Algorithms
    SentencesResources
    Sample acquisition was performed on a Fortessa (BD) and data analyzed in FlowJo V10 (TreeStar).
    FlowJo
    suggested: (FlowJo, RRID:SCR_008520)
    Statistical analysis: All graphs and statistical analysis were performed using Prism v9 (Graphpad).
    Prism
    suggested: (PRISM, RRID:SCR_005375)
    Graphpad
    suggested: (GraphPad, RRID:SCR_000306)

    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.