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Glucosylceramide in bunyavirus particles is essential for virus binding to host cells.

ABSTRACT: Hexosylceramides (HexCer) are implicated in the infection process of various pathogens. However, the molecular and cellular functions of HexCer in infectious cycles are poorly understood. Investigating the enveloped virus Uukuniemi (UUKV), a bunyavirus of the Phenuiviridae family, we performed a lipidomic analysis with mass spectrometry and determined the lipidome of both infected cells and derived virions. We found that UUKV alters the processing of HexCer to glycosphingolipids (GSL) in infected cells. The infection resulted in the overexpression of glucosylceramide (GlcCer) synthase (UGCG) and the specific accumulation of GlcCer and its subsequent incorporation into viral progeny. UUKV and several pathogenic bunyaviruses relied on GlcCer in the viral envelope for binding to various host cell types. Overall, our results indicate that GlcCer is a structural determinant of virions crucial for bunyavirus infectivity. This study also highlights the importance of glycolipids on virions in facilitating interactions with host cell receptors and infectious entry of enveloped viruses.

SUBMITTER: Uckeley ZM

PROVIDER: S-EPMC10834583 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature

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Glucosylceramide in bunyavirus particles is essential for virus binding to host cells.

Uckeley Zina M ZM Duboeuf Maëva M Gu Yu Y Erny Alexandra A Mazelier Magalie M Lüchtenborg Christian C Winter Sophie L SL Schad Paulina P Mathieu Cyrille C Koch Jana J Boulant Steeve S Chlanda Petr P Maisse Carine C Brügger Britta B Lozach Pierre-Yves PY

Cellular and molecular life sciences : CMLS 20240201 1

Hexosylceramides (HexCer) are implicated in the infection process of various pathogens. However, the molecular and cellular functions of HexCer in infectious cycles are poorly understood. Investigating the enveloped virus Uukuniemi (UUKV), a bunyavirus of the Phenuiviridae family, we performed a lipidomic analysis with mass spectrometry and determined the lipidome of both infected cells and derived virions. We found that UUKV alters the processing of HexCer to glycosphingolipids (GSL) in infecte ...[more]

PMID: 38300320

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Glucosylceramide in bunyavirus particles is essential for virus binding to host cells.

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Glucosylceramide in bunyavirus particles is essential for virus binding to host cells.

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