Neuropilin-1 facilitates SARS-CoV-2 cell entry and infectivity
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Abstract
Virus-host interactions determine cellular entry and spreading in tissues. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and the earlier SARS-CoV use angiotensin-converting enzyme 2 (ACE2) as a receptor; however, their tissue tropism differs, raising the possibility that additional host factors are involved. The spike protein of SARS-CoV-2 contains a cleavage site for the protease furin that is absent from SARS-CoV (see the Perspective by Kielian). Cantuti-Castelvetri et al. now show that neuropilin-1 (NRP1), which is known to bind furin-cleaved substrates, potentiates SARS-CoV-2 infectivity. NRP1 is abundantly expressed in the respiratory and olfactory epithelium, with highest expression in endothelial and epithelial cells. Daly et al. found that the furin-cleaved S1 fragment of the spike protein binds directly to cell surface NRP1 and blocking this interaction with a small-molecule inhibitor or monoclonal antibodies reduced viral infection in cell culture. Understanding the role of NRP1 in SARS-CoV-2 infection may suggest potential targets for future antiviral therapeutics.
Science , this issue p. 856 , p. 861 ; see also p. 765
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SciScore for 10.1101/2020.06.07.137802: (What is this?)
Please note, not all rigor criteria are appropriate for all manuscripts.
Table 1: Rigor
Institutional Review Board Statement IRB: Human immunohistochemistry: All experiments with human materials were approved by the ethics committee of the University Medical Center Göttingen and were performed in accordance with the respective national, federal and institutional regulations. Randomization To measure the infectivity of cultured cells, three randomly selected areas per coverslip were imaged. Blinding not detected. Power Analysis not detected. Sex as a biological variable Adult male and female C57BL/6N mice (8 to 10 weeks of age) were taken for all experiments. Cell Line Authentication not detected. Table 2: Resources
Antibodies Sentences Resources Generation of monoclonal antibodies against NRP1 b1b2: … SciScore for 10.1101/2020.06.07.137802: (What is this?)
Please note, not all rigor criteria are appropriate for all manuscripts.
Table 1: Rigor
Institutional Review Board Statement IRB: Human immunohistochemistry: All experiments with human materials were approved by the ethics committee of the University Medical Center Göttingen and were performed in accordance with the respective national, federal and institutional regulations. Randomization To measure the infectivity of cultured cells, three randomly selected areas per coverslip were imaged. Blinding not detected. Power Analysis not detected. Sex as a biological variable Adult male and female C57BL/6N mice (8 to 10 weeks of age) were taken for all experiments. Cell Line Authentication not detected. Table 2: Resources
Antibodies Sentences Resources Generation of monoclonal antibodies against NRP1 b1b2: Female BALB/c and C57BL/6 mice, 8–9 weeks old, were immunized intraperitoneally with 17 μg of recombinant NRP1 b1b2 mixed with an equal volume of complete Freund’s adjuvant (Sigma–Aldrich Chemie, Steinheim, Germany), followed by a booster immunization four weeks later of the same dose mixed with incomplete Freund’s adjuvant (Sigma–Aldrich). NRP1suggested: NonePrimary antibodies were diluted in 10% blocking solution: 1:250 NRP1 (monoclonal rabbit, ab81321, Abcam); 1:1000 TuJ1 (monoclonal mouse, G712A, Promega); 1:250 NeuN (polyclonal chicken, ABN91, Milipore); 1:2000 GFP (polyclonal rabbit, A-6455, Thermo Fisher Scientific), 1:250 ColIV (polyclonal goat, 1340-01, Southern Biotech) TuJ1suggested: (Covance Cat# MMS-435P, RRID:AB_2313773)NeuNsuggested: (Millipore Cat# ABN91, RRID:AB_11205760)GFPsuggested: (Thermo Fisher Scientific Cat# PA1-86341, RRID:AB_931091)After three washes in PBS, the sections were incubated in secondary antibody: Alexa Fluor 488 donkey anti-mouse (R37114, Thermo Fischer Scientific); anti-mouse ( R37114suggested: NonePrimary antibodies were applied over night at a dilution of 1:100 for SARS-CoV S protein (monoclonal mouse, ab272420, Abcam; microwave, citric acid buffer, 10 mM, pH 6.0), 1:250 for NRP1 (monoclonal rabbit, ab81321, Abcam; microwave, Tris-EDTA, pH 8.0) and 1:150 for OLIG2 (polyclonal rabbit, 18953, IBL; microwave, Tris-EDTA, pH 8.0). OLIG2suggested: NoneSecondary antibodies were added as follows: biotinylated anti-mouse 1:200 (GE Healthcare RPN 1001) followed by Tyramide Super Boost with Alexa Fluor 488 1:500 (Thermo Fisher Scientific) and Alexa Fluor 555 anti rabbit 1:500 for 2 h, at room temperature. antisuggested: NoneEither the Envision+ System for mice (Dako) and alkaline phosphatase conjugated anti-rabbit antibodies with FastBlue (Sigma Aldrich) or alkaline phosphatase coupled anti-mouse antibodies with FastBlue (Sigma Aldrich) were used for immunohistochemistry. anti-rabbitsuggested: Noneanti-mousesuggested: NoneExperimental Models: Cell Lines Sentences Resources Cell culture: HEK 293T and Caco-2 (ATCC) cells were grown in complete growth media supplemented with 10% fetal calf serum (FCS), (pen/strep, L-Glutamine in DMEM) and passaged 1:8 (HEK-293 T) or 1:5 (Caco-2) every three HEK 293Tsuggested: NoneCaco-2suggested: NoneHEK-293suggested: CLS Cat# 300192/p777_HEK293, RRID:CVCL_0045)PPC-1 human primary prostate cells were obtained from Erkki Ruoslahti’s laboratory at the Cancer Research Center, PPC-1suggested: ATCC Cat# HTB-190, RRID:CVCL_4778)Production of SARS-CoV-2 S-pseudotyped lentiviral particles: HEK-293T cells were grown in complete growth media (10% FCS, Pen/strep, L-Glutamine in DMEM) until 60 to 70% confluent in a 10 cm dish. HEK-293Tsuggested: NoneIsolation of WT SARS-CoV-2 from COVID-19 patient and virus propagation: Samples were obtained under the Helsinki University Hospital laboratory research permit HUS/32/2018 § 16. 500 µl of nasopharyngeal swab in Copan UTM® Universal Transport Medium was inoculated on Calu-3 cells and incubated for 1 h in +37°C, after which the inoculum was removed and replaced with Minimum Essential Medium supplemented with 2% FBS, L-glutamine, penicillin and streptomycin. Calu-3suggested: KCLB Cat# 30055, RRID:CVCL_0609)2 were propagated in VeroE6 cells (SARSmutFC) or Caco-2 cells up to passage 7 or passage 1, respectively. VeroE6suggested: JCRB Cat# JCRB1819, RRID:CVCL_YQ49)Experimental Models: Organisms/Strains Sentences Resources Adult male and female C57BL/6N mice (8 to 10 weeks of age) were taken for all experiments. C57BL/6Nsuggested: NoneBALB/c mice were purchased from Jackson Laboratories. BALB/csuggested: RRID:IMSR_ORNL:BALB/cRl)Generation of monoclonal antibodies against NRP1 b1b2: Female BALB/c and C57BL/6 mice, 8–9 weeks old, were immunized intraperitoneally with 17 μg of recombinant NRP1 b1b2 mixed with an equal volume of complete Freund’s adjuvant (Sigma–Aldrich Chemie, Steinheim, Germany), followed by a booster immunization four weeks later of the same dose mixed with incomplete Freund’s adjuvant (Sigma–Aldrich). C57BL/6suggested: NoneSoftware and Algorithms Sentences Resources Image visualization was performed using Omero Server software 5.6 Omero Serversuggested: (OME - Open Microscopy Environment, RRID:SCR_008849), Omero figure 4.0.2 (https://github.com/ome/omero-figure) and InkScape 0.9234. Omerosuggested: (OMERO, RRID:SCR_002629)InkScapesuggested: (Inkscape, RRID:SCR_014479)Image analysis: Images were analysed with CellProfiler 3.1.8 (https://cellprofiler.org/). CellProfilersuggested: Nonehttps://cellprofiler.org/suggested: (CellProfiler Image Analysis Software, RRID:SCR_007358)All other measurements were performed semiquantitatively using Fiji software 36. Fijisuggested: (Fiji, RRID:SCR_002285)Primer pools targeting SARS-CoV-2 were designed using PrimalScheme tool http://primal.zibraproject.org38 and PCR was conducted using PhusionFlash PCR master mix (ThemoFisher) ThemoFishersuggested: NoneThe trimmed sequence reads were assembled to the reference sequence (NC_045512.2) using BWA-MEM algorithm implemented in SAMTools version 1.840. BWA-MEMsuggested: (Sniffles, RRID:SCR_017619)SAMToolssuggested: (SAMTOOLS, RRID:SCR_002105)The minority variants and insertion/deletion sites were called using LoFreq* version 2.1.441. scRNA-seq analysis: Analyses of the scRNA-seq datasets including filtering, normalization and clustering were conducted using Seurat 3.142 LoFreq*suggested: NoneSeuratsuggested: (SEURAT, RRID:SCR_007322)Human olfactory neuroepithelium raw data from Durante et al.22, was downloaded from Gene Expression Omnibus under accession code GSE139522. Gene Expression Omnibussuggested: (Gene Expression Omnibus (GEO, RRID:SCR_005012)Statistics were performed in GraphPad Prism. GraphPad Prismsuggested: (GraphPad Prism, RRID:SCR_002798)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.
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SciScore for 10.1101/2020.06.07.137802: (What is this?)
Please note, not all rigor criteria are appropriate for all manuscripts.
Table 1: Rigor
Institutional Review Board Statement Human immunohistochemistry All experiments with human materials were approved by the ethics committee of the University Medical Center Göttingen and were performed in accordance with the respective national , federal and institutional regulations . Randomization To measure the infectivity of cultured cells , three randomly selected areas per coverslip were imaged. Blinding not detected. Power Analysis not detected. Sex as a biological variable not detected. Cell Line Authentication not detected. Table 2: Resources
Antibodies Sentences Resources Here, we found that the cellular receptor neuropilin-1 (NRP1), known to bind furin-cleaved substrates, significantly … SciScore for 10.1101/2020.06.07.137802: (What is this?)
Please note, not all rigor criteria are appropriate for all manuscripts.
Table 1: Rigor
Institutional Review Board Statement Human immunohistochemistry All experiments with human materials were approved by the ethics committee of the University Medical Center Göttingen and were performed in accordance with the respective national , federal and institutional regulations . Randomization To measure the infectivity of cultured cells , three randomly selected areas per coverslip were imaged. Blinding not detected. Power Analysis not detected. Sex as a biological variable not detected. Cell Line Authentication not detected. Table 2: Resources
Antibodies Sentences Resources Here, we found that the cellular receptor neuropilin-1 (NRP1), known to bind furin-cleaved substrates, significantly potentiates SARS-CoV-2 infectivity, which was inhibited by a monoclonal blocking antibody against the extracellular b1b2 domain of NRP1. neuropilin-1suggested: Nonee , f , Representative images and quantification of HEK-293T cells expressing NRP1+ACE2+TMPRSS2 after SARS-2 pseudotype inoculation in the presence of mAb3 antibody against NRP1 ( e , mAb3 , lower panel ) or control immunoglobulin ( e , ctrl Ab , upper panel) , and in the presence of NRP1 b1b2 domain ( f , wt b1b2 , lower panel ) or the NRP1 mutant b1b2 domain ( f , mut b1b2 , upper panel) . NRP1 mutant b1b2 domain ( f , mut b1b2suggested: NonePrimary antibodies were diluted in 10 % blocking solution: 1:250 NRP1 ( monoclonal rabbit , ab81321 , Abcam); 1:1000 TuJ1 ( monoclonal mouse , G712A , Promega); 1:250 NeuN ( polyclonal chicken , ABN91 , Milipore); 1:2000 GFP ( polyclonal rabbit , A-6455 , Thermo Fisher Scientific) , 1:250 ColIV ( polyclonal goat , 1340-01 , Southern Biotech) TuJ1suggested: (Covance Cat# MMS-435P, AB_2313773)<div style="margin-bottom:8px"> <div><b>NeuN</b></div> <div>suggested: (Millipore Cat# ABN91, <a href="https://scicrunch.org/resources/Any/search?q=AB_11205760">AB_11205760</a>)</div> </div> <div style="margin-bottom:8px"> <div><b>GFP</b></div> <div>suggested: (Thermo Fisher Scientific Cat# PA1-86341, <a href="https://scicrunch.org/resources/Any/search?q=AB_931091">AB_931091</a>)</div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">After three washes in PBS , the sections were incubated in secondary antibody: Alexa Fluor 488 donkey anti-mouse ( R37114 , Thermo Fischer Scientific);</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>anti-mouse ( R37114</b></div> <div>suggested: None</div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Primary antibodies were applied over night at a dilution of 1:100 for SARS-CoV S protein ( monoclonal mouse , ab272420 , Abcam; microwave , citric acid buffer , 10 mM , pH 6.0) , 1:250 for NRP1 ( monoclonal rabbit , ab81321 , Abcam; microwave , Tris-EDTA , pH 8.0 ) and 1:150 for OLIG2 ( polyclonal rabbit , 18953 , IBL; microwave , Tris-EDTA , pH 8.0) .</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>NRP1</b></div> <div>suggested: None</div> </div> <div style="margin-bottom:8px"> <div><b>OLIG2</b></div> <div>suggested: None</div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Secondary antibodies were added as follows: biotinylated anti-mouse 1:200 ( GE Healthcare RPN 1001 ) followed by Tyramide Super Boost with Alexa Fluor 488 1:500 ( Thermo Fisher Scientific ) and Alexa Fluor 555 anti rabbit 1:500 for 2 h , at room temperature.</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>anti</b></div> <div>suggested: None</div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Either the Envision+ System for mice ( Dako ) and alkaline phosphatase conjugated anti-rabbit antibodies with FastBlue ( Sigma Aldrich ) or alkaline phosphatase coupled anti-mouse antibodies with FastBlue ( Sigma Aldrich ) were used for immunohistochemistry .</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>anti-rabbit</b></div> <div>suggested: None</div> </div> <div style="margin-bottom:8px"> <div><b>anti-mouse</b></div> <div>suggested: None</div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">AgNPs ( magenta ) were visible inside the cells , counterstained with Alexa-Fluor488-phalloidin ( yellow ) and Hoechst ( cyan) . b , Representative images and quantification of NRP1-expressing HEK-293T cells treated for 30 minutes with the blocking mAb3 antibody ( lower row ) or control Ab ( upper row) . c , Representative images and quantification of NRP1-expressing HEK-293T cells incubated for 30 minutes with AgNPs , together with wild-type b1b2 domain ( wt b1b2 , lower row ) or the mutant b1b2 domain of NRP-1 ( mutant b1b2 , upper row) .</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>mAb3</b></div> <div>suggested: None</div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">NRP1 immunohistochemistry of 12 human tissues were done using NRP1 antibodies HPA030278 ( Atlas Antibodies AB ) or CAB004511 ( Santa Cruz Biotechnology ) ( brown) , and counterstained with hematoxylin ( blue) .</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>CAB004511</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">We validated the effect of the recombinant NRP1 proteins , by showing that b1b2 , but not the mutant protein , blocked uptake of AgNP-CendR in HEK-293T cells ( Extended Data Fig .</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>HEK-293T</b></div> <div>suggested: KCB Cat# KCB 200744YJ, <a href="https://scicrunch.org/resources/Any/search?q=CVCL_0063">CVCL_0063</a></div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Confirming recent reports15 , we found that SARS-CoV-2 viruses , passaged in VeroE6 cells rapidly accumulated mutations around the furin cleavage site of the S protein .</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>VeroE6</b></div> <div>suggested: JCRB Cat# JCRB1819, <a href="https://scicrunch.org/resources/Any/search?q=CVCL_YQ49">CVCL_YQ49</a></div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Figure 2│ A blocking antibody against the b1b2 domain of NRP1 reduces infection of wild-type SARS-CoV-2 ( wt SARS-2) , but not a mutant with a deletion at the furincleavage site ( mutant SARS-2) . a , b , Representative images ( a ) and quantification ( b ) of infection assays in Caco2 cells in the presence of control mAb1 ( ctrl .</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>Caco2</b></div> <div>suggested: CLS Cat# 300137/p1665_CaCo-2, <a href="https://scicrunch.org/resources/Any/search?q=CVCL_0025">CVCL_0025</a></div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Cell culture HEK 293T and Caco-2 ( ATCC ) cells were grown in complete growth media supplemented with 10 % fetal calf serum ( FCS) , ( pen/strep , L-Glutamine in DMEM ) and passaged 1:8 ( HEK-293 T ) or 1:5 ( Caco-2 ) every three days</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>HEK 293T</b></div> <div>suggested: None</div> </div> <div style="margin-bottom:8px"> <div><b>HEK-293</b></div> <div>suggested: CLS Cat# 300192/p777_HEK293, <a href="https://scicrunch.org/resources/Any/search?q=CVCL_0045">CVCL_0045</a></div> </div> <div style="margin-bottom:8px"> <div><b>Caco-2</b></div> <div>suggested: CLS Cat# 300137/p1665_CaCo-2, <a href="https://scicrunch.org/resources/Any/search?q=CVCL_0025">CVCL_0025</a></div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">For confocal imaging of NRP-1 expressing PPC-1 cells , 30,000 cells/well were cultured at 37°C in 5 % CO2 as a monolayer on coverslips ( d = 12 mm; Paul Marienfeld GmbH & Co .</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>PPC-1</b></div> <div>suggested: ATCC Cat# HTB-190, <a href="https://scicrunch.org/resources/Any/search?q=CVCL_4778">CVCL_4778</a></div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Isolation of WT SARS-CoV-2 from COVID-19 patient and virus propagation Samples were obtained under the Helsinki University Hospital laboratory research permit HUS/32/2018 § 16 . 500 µl of nasopharyngeal swab in Copan UTM® Universal Transport Medium was inoculated on Calu-3 cells and incubated for 1 h in +37°C , after which the inoculum was removed and replaced with Minimum Essential Medium supplemented with 2 % FBS , L-glutamine , penicillin and streptomycin .</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>Calu-3</b></div> <div>suggested: BCRJ Cat# 0264, <a href="https://scicrunch.org/resources/Any/search?q=CVCL_0609">CVCL_0609</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">Mercer , J . , Schelhaas , M. & Helenius , A . Virus entry by endocytosis .</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>Mercer</b></div> <div>suggested: None</div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Image visualization was performed using Omero Server software 5.6</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>Omero Server</b></div> <div>suggested: (OME - Open Microscopy Environment, <a href="https://scicrunch.org/resources/Any/search?q=SCR_008849">SCR_008849</a>)</div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">, Omero figure 4.0.2 ( https://github.com/ome/omero-figure ) and InkScape 0.9234 .</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>Omero</b></div> <div>suggested: (OMERO, <a href="https://scicrunch.org/resources/Any/search?q=SCR_002629">SCR_002629</a>)</div> </div> <div style="margin-bottom:8px"> <div><b>InkScape</b></div> <div>suggested: (Inkscape, <a href="https://scicrunch.org/resources/Any/search?q=SCR_014479">SCR_014479</a>)</div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Image analysis Images were analysed with CellProfiler 3.1.8 ( https://cellprofiler.org/).</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>CellProfiler</b></div> <div>suggested: None</div> </div> <div style="margin-bottom:8px"> <div><b>https://cellprofiler.org/</b></div> <div>suggested: (CellProfiler Image Analysis Software, <a href="https://scicrunch.org/resources/Any/search?q=SCR_007358">SCR_007358</a>)</div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">All other measurements were performed semiquantitatively using Fiji software 36 .</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>Fiji</b></div> <div>suggested: (Fiji, <a href="https://scicrunch.org/resources/Any/search?q=SCR_002285">SCR_002285</a>)</div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Primer pools targeting SARS-CoV-2 were designed using PrimalScheme tool http://primal.zibraproject.org 38 and PCR was conducted using PhusionFlash PCR master mix ( ThemoFisher)</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>ThemoFisher</b></div> <div>suggested: None</div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">The trimmed sequence reads were assembled to the reference sequence ( NC_045512.2 ) using BWA-MEM algorithm implemented in SAMTools version 1.840 .</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>BWA-MEM</b></div> <div>suggested: (Sniffles, <a href="https://scicrunch.org/resources/Any/search?q=SCR_017619">SCR_017619</a>)</div> </div> <div style="margin-bottom:8px"> <div><b>SAMTools</b></div> <div>suggested: (Samtools, <a href="https://scicrunch.org/resources/Any/search?q=SCR_002105">SCR_002105</a>)</div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">The minority variants and insertion/deletion sites were called using LoFreq* version 2.1.441 . scRNA-seq analysis Analyses of the scRNA-seq datasets including filtering , normalization and clustering were conducted using Seurat 3.142</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>LoFreq*</b></div> <div>suggested: None</div> </div> <div style="margin-bottom:8px"> <div><b>Seurat</b></div> <div>suggested: (SEURAT, <a href="https://scicrunch.org/resources/Any/search?q=SCR_007322">SCR_007322</a>)</div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Human olfactory neuroepithelium raw data from Durante et al.22 , was downloaded from Gene Expression Omnibus under accession code GSE139522 .</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>Gene Expression Omnibus</b></div> <div>suggested: (Gene Expression Omnibus (GEO), <a href="https://scicrunch.org/resources/Any/search?q=SCR_005012">SCR_005012</a>)</div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Statistics were performed in GraphPad Prism .</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><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">ImageJ2: ImageJ for the next generation of scientific image data .</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>ImageJ</b></div> <div>suggested: (ImageJ, <a href="https://scicrunch.org/resources/Any/search?q=SCR_003070">SCR_003070</a>)</div> </div> </td></tr><tr><td style="min-width:100px;vertical-align:top;border-bottom:1px solid lightgray">Multiplex PCR method for MinION and Illumina sequencing of Zika and other virus genomes directly from clinical samples .</td><td style="min-width:100px;border-bottom:1px solid lightgray"> <div style="margin-bottom:8px"> <div><b>MinION</b></div> <div>suggested: (MinION, <a href="https://scicrunch.org/resources/Any/search?q=SCR_017985">SCR_017985</a>)</div> </div> </td></tr></table>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 OddPub: We did not find a statement about open data. We also did not find a statement about open code. Researchers are encouraged to share open data when possible (see Nature blog).
About SciScore
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