Evidence map›Paper›PMID 34806704›Full record

ArticleJournal of visualized experiments : JoVE2021

Live Imaging and Quantification of Viral Infection in K18 hACE2 Transgenic Mice Using Reporter-Expressing Recombinant SARS-CoV-2.

Desarey Morales Vasquez, Kevin Chiem, Jesus Silvas, Jun-Gyu Park, Chengjin Ye, Luis Martínez-Sobrido

Open access · greenAbstract readVideo-Audio Media
In one paragraph

Article in Journal of visualized experiments : JoVE, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.3field-weighted citation impact, top 42% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 6 citations in OpenAlex.

  1. Article
  2. A bireporter recombinant SARS-CoV-2 Omicron BA.5 forbioRxiv : the preprint server for biology · 2026
    Article
  3. Review
  4. Reporter-expressing viruses for antiviral drug discovery research.Frontiers in cellular and infection microbiology · 2025
    Review
  5. SARS-CoV-2-Specific CD8Vaccines · 2023
    Article
  6. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Desarey Morales VasquezTexas Biomedical Research Institute.
Kevin ChiemTexas Biomedical Research Institute.
Jesus SilvasTexas Biomedical Research Institute.
Jun-Gyu ParkTexas Biomedical Research Institute.
Chengjin YeTexas Biomedical Research Institute; CYe@txbiomed.org.
Luis Martínez-SobridoTexas Biomedical Research Institute; LMartinez@txbiomed.org.
Texas Biomedical Research Institute · US

Funding

NIAID Centers of Excellence for Influenza Research and Response: Universal Influenza Vaccine Research Activities75N93021C00014 · NIAID · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · PI GARCIA-SASTRE, ADOLFO · 2021 to 2025
$62.6M
Mechanism-based Targeting of the RNA Processing Machinery of SARS-CoV-2R01AI161363 · NIAID · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI GUPTA, YOGESH K · 2021 to 2025
$3.2M
The origin and future protective activity of SARS-CoV-2 RBD specific neutralizing antibodiesR01AI161175 · NIAID · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI KOBIE, JAMES J, MARTINEZ-SOBRIDO, LUIS · 2021 to 2024
$2.5M
Developing a Thermostable SARS-CoV-2 RBD-particle VaccineR43AI165089 · NIAID · POP BIOTECHNOLOGIES, INC · PI HUANG, WEI-CHIAO · 2021 to 2022
$600k
NIAID NIH HHS 75N93021C00014NIAID NIH HHS R01 AI161175NIAID NIH HHS R01 AI161363NIAID NIH HHS R43 AI165089
6 · The paper itself

Abstract

The coronavirus disease 2019 (COVID-19) pandemic has been caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). To date, SARS-CoV-2 has been responsible for over 242 million infections and more than 4.9 million deaths worldwide. Similar to other viruses, studying SARS-CoV-2 requires the use of experimental methods to detect the presence of virus in infected cells and/or in animal models. To overcome this limitation, we generated replication-competent recombinant (r)SARS-CoV-2 that expresses bioluminescent (nanoluciferase, Nluc) or fluorescent (Venus) proteins. These reporter-expressing rSARS-CoV-2 allow tracking viral infections in vitro and in vivo based on the expression of Nluc and Venus reporter genes. Here the study describes the use of rSARS-CoV-2/Nluc and rSARS-CoV-2/Venus to detect and track SARS-CoV-2 infection in the previously described K18 human angiotensin-converting enzyme 2 (hACE2) transgenic mouse model of infection using in vivo imaging systems (IVIS). This rSARS-CoV-2/Nluc and rSARS-CoV-2/Venus show rSARS-CoV-2/WT-like pathogenicity and viral replication in vivo. Importantly, Nluc and Venus expression allow us to directly track viral infections in vivo and ex vivo, in infected mice. These rSARS-CoV-2/Nluc and rSARS-CoV-2/Venus represent an excellent option to study the biology of SARS-CoV-2 in vivo, to understand viral infection and associated COVID-19 disease, and to identify effective prophylactic and/or therapeutic treatments to combat SARS-CoV-2 infection.

Indexed as

COVID-19Virus DiseasesAngiotensin-Converting Enzyme 2AnimalsHumansKeratin-18MiceMice, TransgenicSARS-CoV-2Angiotensin-Converting Enzyme 2Keratin-18KRT18 protein, human

Identifiers

PMID34806704
PMCPMC10276921
OpenAlexW3213492096

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.