The pathogenicity of SARS-CoV-2 in hACE2 transgenic mice

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  1. SciScore for 10.1101/2020.02.07.939389: (What is this?)

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

    Table 1: Rigor

    Institutional Review Board StatementAll procedures in this study involving animals were reviewed and approved by the Institutional Animal Care and Use Committee of the Institute of Laboratory Animal Science , Peking Union Medical College ( BLL20001)Randomizationnot detected.Blindingnot detected.Power Analysisnot detected.Sex as a biological variableSpecific pathogen-free , 6-11-month-old , male and female WT mice ( WT-HB-01 , n=15 ) and hACE2 mice ( ACE2-HB-01 , n=19 ) were inoculated intranasally with SARSCoV-2 stock virus ( HB-01 ) at a dosage of 105 TCID50/50 Cell Line Authenticationnot detected.

    Table 2: Resources

    Antibodies
    SentencesResources
    Moreover , specific IgG antibodies against S protein of SARS-CoV-2 were positively measured in the sera of ACE2-HB-01 mice at 21 dpi ( Figure 1e) .
    specific IgG
    suggested: None
    Alternatively , the sections were stained with MAC2 antibody ( Cedarlane Laboratories , CL8942AP)
    MAC2
    suggested: (CEDARLANE Cat# CL8942AP, AB_10060357)
    , CD3 antibody ( Dako , A0452 ) or CD19 antibody ( Cell Signaling Technology , 3574 ) at 4 ℃ overnight .
    CD3
    suggested: (Agilent Cat# A0452, AB_2335677)
          <div style="margin-bottom:8px">
            <div><b>CD19</b></div>
            <div>suggested: (Cell Signaling Technology Cat# 3574, <a href="https://scicrunch.org/resources/Any/search?q=AB_2275523">AB_2275523</a>)</div>
          </div>
        </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Subsequently , the sections were goat anti-rat IgG secondary antibody ( HRP ) ( Beijing ZSGB Biotechnology , PV9004)</td><td style="min-width:100px;border-bottom:1px solid lightgray">
          <div style="margin-bottom:8px">
            <div><b>anti-rat IgG</b></div>
            <div>suggested: None</div>
          </div>
        
          <div style="margin-bottom:8px">
            <div><b>PV9004</b></div>
            <div>suggested: None</div>
          </div>
        </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">goat anti-rabbit IgG secondary antibody ( HRP ) ( Beijing ZSGB Biotechnology , PV9001 ) for 60 min , and visualized by incubation with 3,30-diaminobenzidine tetrahydrochloride ( DAB) .</td><td style="min-width:100px;border-bottom:1px solid lightgray">
          <div style="margin-bottom:8px">
            <div><b>anti-rabbit IgG</b></div>
            <div>suggested: None</div>
          </div>
        </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Anti-S protein antibody ( mouse monoclonal 7D2 , laboratory preparation , 1:200 ) and anti-hACE2 antibody ( rabbit polyclonal , ab15348 , Abcam1:200 ) hACE2 was used as the positive control .</td><td style="min-width:100px;border-bottom:1px solid lightgray">
          <div style="margin-bottom:8px">
            <div><b>Anti-S protein antibody</b></div>
            <div>suggested: None</div>
          </div>
        
          <div style="margin-bottom:8px">
            <div><b>anti-hACE2</b></div>
            <div>suggested: None</div>
          </div>
        </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">For the viral antigen , the sections from ACE2Mock mice incubated with anti-S protein antibody were used as the negative control .</td><td style="min-width:100px;border-bottom:1px solid lightgray">
          <div style="margin-bottom:8px">
            <div><b>anti-S protein</b></div>
            <div>suggested: None</div>
          </div>
        </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Co-localization of SARS-CoV-2 S protein and hACE2 receptor in hACE2 mouse lungs, the sections were incubated with anti-SARS-CoV-2 S protein antibody, anti-human ACE2 antibody, and DAPI.</td><td style="min-width:100px;border-bottom:1px solid lightgray">
          <div style="margin-bottom:8px">
            <div><b>anti-SARS-CoV-2 S protein</b></div>
            <div>suggested: None</div>
          </div>
        
          <div style="margin-bottom:8px">
            <div><b>anti-human ACE2</b></div>
            <div>suggested: None</div>
          </div>
        </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Identification of 7D2 antibody against SARS-CoV-2 S1 protein.</td><td style="min-width:100px;border-bottom:1px solid lightgray">
          <div style="margin-bottom:8px">
            <div><b>SARS-CoV-2 S1 protein.</b></div>
            <div>suggested: None</div>
          </div>
        </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">The plate coated by 0.2 ug SARS-CoV-2 S1 protein was incubated with 7D2 antibody as primary antibody (1:200) and detected using HRP-conjugated goat antimouse secondary antibody.</td><td style="min-width:100px;border-bottom:1px solid lightgray">
          <div style="margin-bottom:8px">
            <div><b>antimouse</b></div>
            <div>suggested: None</div>
          </div>
        </td></tr><tr><td style="min-width:100px;text-align:center; padding-top:4px;" colspan="2"><b>Experimental Models: Cell Lines</b></td></tr><tr><td style="min-width:100px;text=align:center"><i>Sentences</i></td><td style="min-width:100px;text-align:center"><i>Resources</i></td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Seed SARS-CoV-2 stocks and virus isolation studies were performed in Vero cells , which are maintained in Dulbecco 's modified Eagle 's medium ( DMEM , Invitrogen , Carlsbad , USA ) supplemented with 10 % fetal bovine serum ( FBS) , 100 IU/ml penicillin , and 100 µg/ml streptomycin , and incubated at 37°C , 5 % CO2 .</td><td style="min-width:100px;border-bottom:1px solid lightgray">
          <div style="margin-bottom:8px">
            <div><b>Vero</b></div>
            <div>suggested: None</div>
          </div>
        </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Transmission Electron Microscopy Supernatant from Vero E6 cell cultures that showed cytopathic effects was collected , inactivated with 2 % paraformaldehyde for at least 2 hours , and ultracentrifuged to sediment virus particles .</td><td style="min-width:100px;border-bottom:1px solid lightgray">
          <div style="margin-bottom:8px">
            <div><b>Vero E6</b></div>
            <div>suggested: <a href="https://scicrunch.org/resources/Any/search?q=CVCL_XD71">CVCL_XD71</a></div>
          </div>
        </td></tr><tr><td style="min-width:100px;text-align:center; padding-top:4px;" colspan="2"><b>Software and Algorithms</b></td></tr><tr><td style="min-width:100px;text=align:center"><i>Sentences</i></td><td style="min-width:100px;text-align:center"><i>Resources</i></td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">The speed of geographical spread of COVID-19 caused by SARS-CoV-2 has been declared as public health emergency of international concern ( PHEIC) , with cases reported on multiple continents only weeks after the disease was first reported6 .</td><td style="min-width:100px;border-bottom:1px solid lightgray">
          <div style="margin-bottom:8px">
            <div><b>SARS-CoV-2</b></div>
            <div>suggested: (Sino Biological Cat# 40143-R019, <a href="https://scicrunch.org/resources/Any/search?q=AB_2827973">AB_2827973</a>)</div>
          </div>
        </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Statistical analysis All data were analyzed with GraphPad Prism 8.0 software.</td><td style="min-width:100px;border-bottom:1px solid lightgray">
          <div style="margin-bottom:8px">
            <div><b>GraphPad Prism</b></div>
            <div>suggested: (GraphPad Prism, <a href="https://scicrunch.org/resources/Any/search?q=SCR_002798">SCR_002798</a>)</div>
          </div>
        </td></tr></table>
    

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