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Human organoid systems reveal in vitro correlates of fitness for SARS-CoV-2 B.1.1.7 (preprint)
biorxiv; 2021.
Preprint in English | bioRxiv | ID: ppzbmed-10.1101.2021.05.03.441080
ABSTRACT
A new phase of the COVID-19 pandemic has started as several SARS-CoV-2 variants are rapidly emerging globally, raising concerns for increased transmissibility. As animal models and traditional in vitro systems may fail to model key aspects of the SARS-CoV-2 replication cycle, representative in vitro systems to assess variants phenotypically are urgently needed. We found that the British variant (clade B.1.1.7), compared to an ancestral SARS-CoV-2 clade B virus, produced higher levels of infectious virus late in infection and had a higher replicative fitness in human airway, alveolar and intestinal organoid models. Our findings unveil human organoids as powerful tools to phenotype viral variants and suggest extended shedding as a correlate of fitness for SARS-CoV-2.
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Full text: Available Collection: Preprints Database: bioRxiv Main subject: Seizures / Adenocarcinoma, Bronchiolo-Alveolar / Severe Acute Respiratory Syndrome / COVID-19 Language: English Year: 2021 Document Type: Preprint

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Full text: Available Collection: Preprints Database: bioRxiv Main subject: Seizures / Adenocarcinoma, Bronchiolo-Alveolar / Severe Acute Respiratory Syndrome / COVID-19 Language: English Year: 2021 Document Type: Preprint