Cold sensitivity of the SARS-CoV-2 spike ectodomain

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Abstract

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  1. SciScore for 10.1101/2020.07.12.199588: (What is this?)

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

    Table 1: Rigor

    Institutional Review Board StatementConsent: Peripheral blood was collected following informed consent on a Duke University Medical Center approved Institutional Review Board protocol.
    IRB: Peripheral blood was collected following informed consent on a Duke University Medical Center approved Institutional Review Board protocol.
    Randomizationnot detected.
    Blindingnot detected.
    Power Analysisnot detected.
    Sex as a biological variablenot detected.
    Cell Line Authenticationnot detected.

    Table 2: Resources

    Antibodies
    SentencesResources
    Antibodies were incubated at room temperature for 1 hour, washed and binding detected with goat anti-human-HRP (Jackson ImmunoResearch Laboratories, #109-035-098) and TMB substrate.
    anti-human-HRP
    suggested: None
    Antibodies captured on a CM5 chip coated with amine-coupled human Anti-Fc (8000RU) were assayed by SARS-CoV-2 spike at 200 nM.
    Anti-Fc
    suggested: None
    Experimental Models: Cell Lines
    SentencesResources
    rS2d-Hexapro was also grown in CHO cells.
    CHO
    suggested: CLS Cat# 603479/p746_CHO, RRID:CVCL_0213)
    Antibodies were produced in Expi293 cells and purified by Protein A affinity.
    Expi293
    suggested: RRID:CVCL_D615)
    The antibody/virus mixture was then used to inoculate Vero E6 cells (ATCC).
    Vero E6
    suggested: RRID:CVCL_XD71)
    293T/ACE2 cells were kindly provided by Drs.
    293T/ACE2
    suggested: RRID:CVCL_YZ65)
    Pseudovirions were produced in HEK 293T/17 cells (ATCC cat. no. CRL-11268) by transfection using Fugene 6 (Promega Cat#E2692) and a combination of Spike plasmid, lentiviral backbone plasmid (pCMV ΔR8.2) and firefly Luc reporter gene plasmid (pHR’ CMV Luc)23 in a 1:17:17 ratio.
    HEK 293T/17
    suggested: ATCC Cat# CRL-11268, RRID:CVCL_1926)
    Software and Algorithms
    SentencesResources
    Plasmids were transiently transfected into CHO cells using ExpiFectamine CHO Transfection Kit (ThermoFisher), and protein was purified one the sixth day post-transfection.
    ThermoFisher
    suggested: (ThermoFisher; SL 8; Centrifuge, RRID:SCR_020809)
    The RELION program17 was used for particle picking, 2D and 3D class averaging.
    RELION
    suggested: (RELION, RRID:SCR_016274)
    Sensorgram data were analyzed using the BiaEvaluation software (GE Healthcare)
    BiaEvaluation
    suggested: (BIAevaluation Software, RRID:SCR_015936)

    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.