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- W3213442916 abstract "Emerging evidence suggests that host glycans influence severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Here, we reveal that the receptor-binding domain (RBD) of the spike (S) protein on SARS-CoV-2 recognizes oligosaccharides containing sialic acid (Sia), with preference for monosialylated gangliosides. Gangliosides embedded within an artificial membrane also bind to the RBD. The monomeric affinities (Kd = 100–200 μM) of gangliosides for the RBD are similar to another negatively charged glycan ligand of the RBD proposed as a viral co-receptor, heparan sulfate (HS) dp2–dp6 oligosaccharides. RBD binding and infection of SARS-CoV-2 pseudotyped lentivirus to angiotensin-converting enzyme 2 (ACE2)-expressing cells is decreased following depletion of cell surface Sia levels using three approaches: sialyltransferase (ST) inhibition, genetic knockout of Sia biosynthesis, or neuraminidase treatment. These effects on RBD binding and both pseudotyped and authentic SARS-CoV-2 viral entry are recapitulated with pharmacological or genetic disruption of glycolipid biosynthesis. Together, these results suggest that sialylated glycans, specifically glycolipids, facilitate viral entry of SARS-CoV-2. Mass spectrometric profiling of a glycan library reveals that sialylated glycans, especially sialic acid-containing gangliosides, interact with the RBD of the SARS-CoV-2 spike protein and are involved in ACE2-dependent viral infection." @default.
- W3213442916 created "2021-11-22" @default.
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- W3213442916 date "2021-11-09" @default.
- W3213442916 modified "2023-10-18" @default.
- W3213442916 title "Sialic acid-containing glycolipids mediate binding and viral entry of SARS-CoV-2" @default.
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- W3213442916 doi "https://doi.org/10.1038/s41589-021-00924-1" @default.
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- W3213442916 hasPublicationYear "2021" @default.
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