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Hantavirus Inhibits TRAIL-Mediated Killing of Infected Cells by Downregulating Death Receptor 5
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2019 (English)In: Cell Reports, E-ISSN 2211-1247, Vol. 28, no 8, p. 2124-2139Article in journal (Refereed) Published
Abstract [en]

Cytotoxic lymphocytes normally kill virus-infected cells by apoptosis induction. Cytotoxic granule-dependent apoptosis induction engages the intrinsic apoptosis pathway, whereas death receptor (DR)-dependent apoptosis triggers the extrinsic apoptosis pathway. Hantaviruses, single-stranded RNA viruses of the order Bunyavirales, induce strong cytotoxic lymphocyte responses in infected humans. Cytotoxic lymphocytes, however, are largely incapable of eradicating hantavirus-infected cells. Here, we show that the prototypic hantavirus, Hantaan virus (HTNV), induces TRAIL production but strongly inhibits TRAIL-mediated extrinsic apoptosis induction in infected cells by downregulating DR5 cell surface expression. Mechanistic analyses revealed that HTNV triggers both 26S proteasome-dependent degradation of DR5 through direct ubiquitination of DR5 and hampers DR5 transport to the cell surface. These results corroborate earlier findings, demonstrating that hantavirus also inhibits cytotoxic cell granule-dependent apoptosis induction. Together, these findings show that HTNV counteracts intrinsic and extrinsic apoptosis induction pathways, providing a defense mechanism utilized by hantaviruses to inhibit cytotoxic cell-mediated eradication of infected cells.

Place, publisher, year, edition, pages
Cell Press , 2019. Vol. 28, no 8, p. 2124-2139
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Cell Biology
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URN: urn:nbn:se:umu:diva-163683DOI: 10.1016/j.celrep.2019.07.066ISI: 000482135400015PubMedID: 31433987Scopus ID: 2-s2.0-85070557561OAI: oai:DiVA.org:umu-163683DiVA, id: diva2:1362034
Available from: 2019-10-17 Created: 2019-10-17 Last updated: 2024-01-17Bibliographically approved

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Ahlm, Clas
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CiteExportLink to record
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Citation style
  • apa
  • ieee
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  • Other style
More styles
Language
  • de-DE
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  • en-US
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More languages
Output format
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