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Halofuginone is a potent inhibitor of SARS-CoV-2 Infection and Replication

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Homo sapiens

PROVIDER: GSE157036 | GEO | 2023/08/28

REPOSITORIES: GEO

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Halofuginone is a potent inhibitor of SARS-CoV-2 Infection and Replication [Exp3]

Project description:Here we identify halofuginone, a Prolyl-tRNA Synthetase (PRS) inhibitors as a potent inhibitors of SARS-CoV-2 cellular entry and viral replication. To infect the host cell, the SARS-CoV-2 spike protein interacts with cell surface heparan sulfate (HS) and angiotensin-converting enzyme 2 (ACE2) through its Receptor Binding Domain. Removal of cell surface HS or blockade of HS biosynthesis represents a promising clinical target for treatment of SARS-CoV-2. In vitro studies confirm that halofuginone and PRS inhibitors prevent HS biosynthesis and thereby HS cell surface presentation and Spike protein binding. Halofuginone also suppresses authentic SARS-CoV-2 infection by inhibiting PRS activity, which decreases the translation efficiency of proline-rich HS biosynthetic enzymes and essential SARS-CoV-2 proteins after infection. Thus, halofuginone inhibits SARS-CoV-2 at both attachment and post-entry steps and blocks SARS-CoV-2 infection of human lung airway epithelial cells at low nanomolar concentrations. These findings support the use of halofuginone, an orally bioavailable anti-fibrotic and anti-inflammatory compound with encouraging clinical phase 1 safety data, as an antiviral drug to prevent SARS-CoV-2 infection.

2023-08-28 | GSE166411 | GEO

Halofuginone is a potent inhibitor of SARS-CoV-2 Infection and Replication [Exp2]

Project description:Here we identify halofuginone, a Prolyl-tRNA Synthetase (PRS) inhibitors as a potent inhibitors of SARS-CoV-2 cellular entry and viral replication. To infect the host cell, the SARS-CoV-2 spike protein interacts with cell surface heparan sulfate (HS) and angiotensin-converting enzyme 2 (ACE2) through its Receptor Binding Domain. Removal of cell surface HS or blockade of HS biosynthesis represents a promising clinical target for treatment of SARS-CoV-2. In vitro studies confirm that halofuginone and PRS inhibitors prevent HS biosynthesis and thereby HS cell surface presentation and Spike protein binding. Halofuginone also suppresses authentic SARS-CoV-2 infection by inhibiting PRS activity, which decreases the translation efficiency of proline-rich HS biosynthetic enzymes and essential SARS-CoV-2 proteins after infection (data not provided here). Thus, halofuginone inhibits SARS-CoV-2 at both attachment and post-entry steps and blocks SARS-CoV-2 infection of human lung airway epithelial cells at low nanomolar concentrations. These findings support the use of halofuginone, an orally bioavailable anti-fibrotic and anti-inflammatory compound with encouraging clinical phase 1 safety data, as an antiviral drug to prevent SARS-CoV-2 infection.

2023-08-28 | GSE157034 | GEO

Halofuginone is a potent inhibitor of SARS-CoV-2 Infection and Replication [Exp1]

Project description:Here we identify halofuginone, a Prolyl-tRNA Synthetase (PRS) inhibitors as a potent inhibitors of SARS-CoV-2 cellular entry and viral replication. To infect the host cell, the SARS-CoV-2 spike protein interacts with cell surface heparan sulfate (HS) and angiotensin-converting enzyme 2 (ACE2) through its Receptor Binding Domain. Removal of cell surface HS or blockade of HS biosynthesis represents a promising clinical target for treatment of SARS-CoV-2. In vitro studies confirm that halofuginone and PRS inhibitors prevent HS biosynthesis and thereby HS cell surface presentation and Spike protein binding. Halofuginone also suppresses authentic SARS-CoV-2 infection by inhibiting PRS activity, which decreases the translation efficiency of proline-rich HS biosynthetic enzymes and essential SARS-CoV-2 proteins after infection (data not provided here). Thus, halofuginone inhibits SARS-CoV-2 at both attachment and post-entry steps and blocks SARS-CoV-2 infection of human lung airway epithelial cells at low nanomolar concentrations. These findings support the use of halofuginone, an orally bioavailable anti-fibrotic and anti-inflammatory compound with encouraging clinical phase 1 safety data, as an antiviral drug to prevent SARS-CoV-2 infection.

2023-08-28 | GSE157032 | GEO

SARS-CoV-2 infection