Evidence map›Paper›PMID 37029393›Full record

ArticleVirology journal2023

An optimized circular polymerase extension reaction-based method for functional analysis of SARS-CoV-2.

GuanQun Liu, Michaela U Gack

Abstract read
In one paragraph

Article in Virology journal, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–field-weighted citation impact
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

17 citing papers in PubMed.

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  4. Inhibition of coronaviral exoribonuclease activity by TRIM-mediated SUMOylation.Proceedings of the National Academy of Sciences of the United States of America · 2026
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  10. Coronavirus endoribonuclease antagonizes ZBP1-mediated necroptosis and delays multiple cell death pathways.Proceedings of the National Academy of Sciences of the United States of America · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors.

GuanQun LiuFlorida Research and Innovation Center, Cleveland Clinic, Port St. Lucie, FL, USA. liug2@ccf.org.
Michaela U GackFlorida Research and Innovation Center, Cleveland Clinic, Port St. Lucie, FL, USA. gackm@ccf.org.

Funding

Regulation of Host Innate Immunity Against Viral InfectionR37AI087846 · NIAID · CLEVELAND CLINIC LERNER COM-CWRU · PI Michaela Ulrike Gack · 2021 to 2026
$2.8M
NIAID NIH HHS R37 AI087846
6 · The paper itself

Abstract

backgroundReverse genetics systems have been crucial for studying specific viral genes and their relevance in the virus lifecycle, and become important tools for the rational attenuation of viruses and thereby for vaccine design. Recent rapid progress has been made in the establishment of reverse genetics systems for functional analysis of SARS-CoV-2, a coronavirus that causes the ongoing COVID-19 pandemic that has resulted in detrimental public health and economic burden. Among the different reverse genetics approaches, circular polymerase extension reaction (CPER) has become one of the leading methodologies to generate recombinant SARS-CoV-2 infectious clones. Although CPER has greatly facilitated SARS-CoV-2 analysis, it still has certain intrinsic limitations that impede the efficiency and robustness of virus rescue.

resultsWe developed an optimized CPER methodology which, through the use of a modified linker plasmid and by performing DNA nick ligation and direct transfection of permissive cells, overcomes certain intrinsic limitations of the 'traditional' CPER approaches for SARS-CoV-2, allowing for efficient virus rescue.

conclusionsThe herein described optimized CPER system may facilitate research studies to assess the contribution of SARS-CoV-2 genes and individual motifs or residues to virus replication, pathogenesis and immune escape, and may also be adapted to other viruses.

Indexed as

COVID-19SARS-CoV-2HumansNucleotidyltransferasesPandemicsVirus ReplicationNucleotidyltransferasesCPERReverse genetics technologySARS-CoV-2

Identifiers

PMID37029393
PMCPMC10080526

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Registered trials

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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.