Discovery of a proteinaceous cellular receptor for a norovirus.
Authors | |
Abstract | Noroviruses (NoVs) are a leading cause of gastroenteritis globally, yet the host factors required for NoV infection are poorly understood. We identified host molecules that are essential for murine NoV (MNoV)-induced cell death, including CD300lf as a proteinaceous receptor. We found that CD300lf is essential for MNoV binding and replication in cell lines and primary cells. Additionally, Cd300lf(-/-) mice are resistant to MNoV infection. Expression of CD300lf in human cells breaks the species barrier that would otherwise restrict MNoV replication. The crystal structure of the CD300lf ectodomain reveals a potential ligand-binding cleft composed of residues that are critical for MNoV infection. Therefore, the presence of a proteinaceous receptor is the primary determinant of MNoV species tropism, whereas other components of cellular machinery required for NoV replication are conserved between humans and mice. |
Year of Publication | 2016
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Journal | Science
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Volume | 353
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Issue | 6302
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Pages | 933-6
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Date Published | 2016 08 26
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ISSN | 1095-9203
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DOI | 10.1126/science.aaf1220
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PubMed ID | 27540007
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Grant list | U19 AI109725 / AI / NIAID NIH HHS / United States
P30 CA091842 / CA / NCI NIH HHS / United States
F31 CA177194 / CA / NCI NIH HHS / United States
T32 CA009547 / CA / NCI NIH HHS / United States
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