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Nasally-delivered interferon-λ in mice protects against upper and lower respiratory tract infection of SARS-CoV-2 variants including Omicron

ABSTRACT: Nasally-delivered interferon-λ in mice protects against upper and lower respiratory tract infection of SARS-CoV-2 variants including Omicron

PROVIDER: PRJNA798692 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR17662558_1.fastq.gz	Fastqsanger.gz
	SRR17662558_2.fastq.gz	Fastqsanger.gz
	SRR17662559_1.fastq.gz	Fastqsanger.gz
	SRR17662559_2.fastq.gz	Fastqsanger.gz
	SRR17662560_1.fastq.gz	Fastqsanger.gz

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Nasally-delivered interferon-λ in mice protects against upper and lower respiratory tract infection of SARS-CoV-2 variants including Omicron

Project description:The Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has had devastating impacts on our global society. Although vaccines and monoclonal antibody countermeasures have reduced the morbidity and mortality associated with SARS-CoV-2 infection, variants with constellations of mutations in the spike gene threaten their efficacy. Therefore, antiviral interventions that are resistant to further virus evolution may be needed. Here, we show IFN-λ protects against SARS-CoV-2 B.1.351 (Beta) and B.1.1529 (Omicron) variants in three strains of conventional and human ACE2 transgenic mice. Prophylaxis or therapy with nasally-delivered IFN-λ2 limited infection of historical or variant (B.1.351 and B.1.1.529) SARS-CoV-2 strains in both the upper and lower respiratory tracts without causing excessive inflammation. In the lung, IFN-λ was produced preferentially in epithelial cells and acted on radio-resistant cells to protect against of SARS-CoV-2 infection. Thus, inhaled IFN-λ may have promise as a treatment for evolving SARS-CoV-2 variants that develop resistance to antibody-based countermeasures.

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Nasally-delivered interferon-λ protects mice against upper and lower respiratory tract infection of SARS-CoV-2 variants including Omicron.

Project description:Although vaccines and monoclonal antibody countermeasures have reduced the morbidity and mortality associated with SARS-CoV-2 infection, variants with constellations of mutations in the spike gene threaten their efficacy. Accordingly, antiviral interventions that are resistant to further virus evolution are needed. The host-derived cytokine IFN-λ has been proposed as a possible treatment based on correlative studies in human COVID-19 patients. Here, we show IFN-λ protects against SARS-CoV-2 B.1.351 (Beta) and B.1.1.529 (Omicron)variants in three strains of conventional and human ACE2 transgenic mice. Prophylaxis or therapy with nasally-delivered IFN-λ2 limited infection of historical or variant (B.1.351 and B.1.1.529) SARS-CoV-2 strains in the upper and lower respiratory tracts without causing excessive inflammation. In the lung, IFN-λ was produced preferentially in epithelial cells and acted on radio-resistant cells to protect against of SARS-CoV-2 infection. Thus, inhaled IFN-λ may have promise as a treatment for evolving SARS-CoV-2 variants that develop resistance to antibody-based countermeasures.

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Nasally delivered interferon-λ protects mice against infection by SARS-CoV-2 variants including Omicron.

Project description:Although vaccines and monoclonal antibody countermeasures have reduced the morbidity and mortality associated with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, variants with constellations of mutations in the spike gene jeopardize their efficacy. Accordingly, antiviral interventions that are resistant to further virus evolution are needed. The host-derived cytokine interferon lambda (IFN-λ) has been proposed as a possible treatment based on studies in human coronavirus 2019 (COVID-19) patients. Here, we show that IFN-λ protects against SARS-CoV-2 B.1.351 (Beta) and B.1.1.529 (Omicron) variants in three strains of conventional and human ACE2 transgenic mice. Prophylaxis or therapy with nasally delivered IFN-λ2 limits infection of historical or variant SARS-CoV-2 strains in the upper and lower respiratory tracts without causing excessive inflammation. In the lung, IFN-λ is produced preferentially in epithelial cells and acts on radio-resistant cells to protect against SARS-CoV-2 infection. Thus, inhaled IFN-λ may have promise as a treatment for evolving SARS-CoV-2 variants that develop resistance to antibody-based countermeasures.

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