Coinfection with influenza A virus enhances SARS-CoV-2 infectivity

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Abstract

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  1. SciScore for 10.1101/2020.10.14.335893: (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 variableMice were male, age-matched, and grouped for SARS-CoV-2 infection or IAV and SARS-CoV-2 co-infection.
    Cell Line Authenticationnot detected.

    Table 2: Resources

    Antibodies
    SentencesResources
    Rabbit monoclonal antibody against ACE2 (Abclonal, A4612, 1:1000)
    A4612
    suggested: (ABclonal Cat# A4612, RRID:AB_2863309)
    mouse monoclonal antibody against SARS-CoV Nucleoprotein (Sino Biological, 40143-MM05, 1:1000), anti-actin (Abclonal, 1:1000), were purchased commercially.
    mouse monoclonal antibody against SARS-CoV Nucleoprotein ( Sino Biological , 40143-MM05 , 1:1000) , anti-actin ( Abclonal , 1:1000)
    suggested: None
    antibody against SARS-CoV Nucleoprotein ( Sino Biological , 40143-MM05
    suggested: None
    anti-actin
    suggested: None
    Peroxidase-conjugated secondary antibodies (Antgene, 1: 5000) were applied accordingly followed by image development with Chemiluminescent HRP Substrate Kit (Millipore Corporation).
    Antgene , 1: 5000
    suggested: None
    Antgene ,
    suggested: None
    The primary antibodies used in this study were rabbit polyclonal antibody against ACE2 for immunofluorescence (Sino Biological, 10108-T26) and anti-influenza virus-NP (kindly provided by Prof. Ningshao Xia).
    ACE2
    suggested: None
    anti-influenza virus-NP
    suggested: None
    Experimental Models: Cell Lines
    SentencesResources
    Cells and viruses: The 293T, A549, Huh-7, MDCK, and Vero E6, WI-38, WI-38 VA-13, and BEAS-2B were obtained from ATCC and maintained in Dulbecco’s modified Eagle’s medium (DMEM; Gibco) supplemented with 10% foetal bovine serum (FBS), Calu-3 (ATCC) was maintained in DMEM supplemented with 20% FBS.
    293T
    suggested: None
    Huh-7
    suggested: None
    MDCK
    suggested: None
    WI-38
    suggested: None
    BEAS-2B
    suggested: None
    Calu-3
    suggested: None
    NCI-H292(ATCC) was maintained with RPMI-1640 (Gibco) supplemented with 20% FBS.
    NCI-H292
    suggested: None
    Forty-eight hours post-transfection, 150 μl pseudotyped VSV-ΔG bearing VSV-G protein were used to infect Vero E6 cells.
    Vero E6
    suggested: RRID:CVCL_XD71)
    . Immunofluorescence: A549 cells were fixed and incubated with primary antibodies.
    A549
    suggested: NCI-DTP Cat# A549, RRID:CVCL_0023)
    Software and Algorithms
    SentencesResources
    ACE2 knocking-down cells: Two sgRNAs targeting the hACE2 gene were designed under the protocol in http://chopchop.cbu.uib.no and commercially synthesized to clone in lenti-Cas9-blast vector (kindly provided by Prof. Hongbing Shu).
    http://chopchop.cbu.uib.no
    suggested: (CHOPCHOP, RRID:SCR_015723)
    Mice: The K18 hACE2 transgenic mice purchased from Gempharmatech were housed in ABSL-3 pathogen-free facilities under 12-h light-dark cycles with access to food and water.
    Gempharmatech
    suggested: (GemPharmatech, RRID:SCR_017239)

    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.

    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.

  2. SciScore for 10.1101/2020.10.14.335893: (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 variableMice 296 were male, age-matched, and grouped for SARS-CoV-2 infection or IAV and SARS-CoV- 297 2 co-infection.Cell Line Authenticationnot detected.

    Table 2: Resources

    Antibodies
    SentencesResources
    270 Rabbit monoclonal antibody against ACE2 (Abclonal, A4612, 1:1000)
    A4612
    suggested: (ABclonal Cat# A4612, RRID:AB_2863309)
    mouse monoclonal 271 antibody against SARS-CoV Nucleoprotein (Sino Biological, 40143-MM05, 1:1000)
    antibody against SARS-CoV Nucleoprotein ( Sino Biological , 40143-MM05
    suggested: None
    The primary antibodies used 278 in this study were rabbit polyclonal antibody against ACE2 for immunofluorescence (Sino 279 Biological, 10108-T26) and anti-influenza virus-NP (kindly provided by Prof.
    ACE2
    suggested: None
    anti-influenza virus-NP
    suggested: None
    281 Alexa Fluor M555, Invitrogen) and DAPI (Beyotime, C1002), were admitted afterward Peroxidase-conjugated secondary antibodies according to standard protocols.
    C1002
    suggested: None
    Experimental Models: Cell Lines
    SentencesResources
    200 The 293T, A549, Huh-7, MDCK, and Vero E6, WI-38, WI-38 VA-13, and BEAS-2B were 201 obtained from ATCC and maintained in Dulbecco’s modified Eagle’s medium (DMEM; 202 Gibco) supplemented with 10% foetal bovine serum (FBS), Calu-3 (ATCC) was 203 maintained in DMEM supplemented with 20% FBS.
    293T
    suggested: None
    Huh-7
    suggested: None
    WI-38
    suggested: None
    BEAS-2B
    suggested: None
    Calu-3
    suggested: BCRJ Cat# 0264, RRID:CVCL_0609)
    NCI-H292(ATCC) was maintained 204 with RPMI-1640 (Gibco) supplemented with 20% FBS.
    NCI-H292
    suggested: None
    To produce 226 pseudotyped VSV-ΔG-Luc/mCherry bearing SARS-CoV-2 spike protein (pSARS-CoV-2), 227 Vero E6 cells were seeded in 10 cm dish and transfected simultaneously with 15 μg SARS- 228 CoV-2-S-Δ18 plasmid by Lipofectamine 3000 (Thermo).
    Vero E6
    suggested: None
    Forty-eight hours post- 229 transfection, 150 µl pseudotyped VSV-ΔG bearing VSV-G protein were used to infect Vero 230 E6 cells.
    Vero 230
    suggested: None
    458 (J-L) WT A549, and IFNAR-/-A549 cells were infected with WSN at MOI 0.1 for 12 hours, 459 cells were then infected with pSARS-CoV-2 for another 24 hours followed by measuring 460 luciferase activity and mRNA expression levels of indicated genes.
    IFNAR-/-A549
    suggested: None
    464 A549 cells were infected with A/WSN/33 at indicated MOIs.
    A549
    suggested: NCI-DTP Cat# A549, RRID:CVCL_0023)
    ( A-C) P values are from 480 unpaired One-way ANOVA. * 482 (A) MDCK cells were pre-infected with WSN (MOI=0.1), H1N1(MOI=1), or H3N2 483 (MOI=1) for 12 hours and were then infected with pSARS-CoV-2 for another 24 hours 484 followed by measuring luciferase activity.
    MDCK
    suggested: None
    Software and Algorithms
    SentencesResources
    284 ACE2 knocking-down cells 285 Two sgRNAs targeting the hACE2 gene were designed under the protocol in 286 http://chopchop.cbu.uib.no and commercially synthesized to clone in lenti-Cas9-blast 287 vector (kindly provided by Prof. Hongbing Shu).
    http://chopchop.cbu.uib.no
    suggested: (CHOPCHOP, RRID:SCR_015723)
    293 Mice 294 The K18 hACE2 transgenic mice purchased from Gempharmatech were housed in ABSL- 295 3 pathogen-free facilities under 12-h light-dark cycles with access to food and water.
    Gempharmatech
    suggested: (GemPharmatech, RRID:SCR_017239)

    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.


    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.