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Non-apoptotic TRAIL function modulates NK cell activity during viral infection.
Journal article

Non-apoptotic TRAIL function modulates NK cell activity during viral infection.

  • Cardoso Alves L Institute of Pathology, University of Bern, Bern, Switzerland.
  • Berger MD Institute of Pathology, University of Bern, Bern, Switzerland.
  • Koutsandreas T Institute of Biology, Medicinal Chemistry & Biotechnology, NHRF, Athens, Greece.
  • Kirschke N Institute of Pathology, University of Bern, Bern, Switzerland.
  • Lauer C Institute of Pathology, University of Bern, Bern, Switzerland.
  • Spörri R Institute of Microbiology, ETH Zurich, Zurich, Switzerland.
  • Chatziioannou A Institute of Biology, Medicinal Chemistry & Biotechnology, NHRF, Athens, Greece.
  • Corazza N Institute of Pathology, University of Bern, Bern, Switzerland.
  • Krebs P Institute of Pathology, University of Bern, Bern, Switzerland.
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  • 2019-11-20
Published in:
  • EMBO reports. - 2020
CD8 T cells
IL-15 signaling
NK cells
TNF-related apoptosis-inducing ligand
lymphocytic choriomeningitis virus
English The role of death receptor signaling for pathogen control and infection-associated pathogenesis is multifaceted and controversial. Here, we show that during viral infection, tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) modulates NK cell activity independently of its pro-apoptotic function. In mice infected with lymphocytic choriomeningitis virus (LCMV), Trail deficiency led to improved specific CD8+ T-cell responses, resulting in faster pathogen clearance and reduced liver pathology. Depletion experiments indicated that this effect was mediated by NK cells. Mechanistically, TRAIL expressed by immune cells positively and dose-dependently modulates IL-15 signaling-induced granzyme B production in NK cells, leading to enhanced NK cell-mediated T cell killing. TRAIL also regulates the signaling downstream of IL-15 receptor in human NK cells. In addition, TRAIL restricts NK1.1-triggered IFNγ production by NK cells. Our study reveals a hitherto unappreciated immunoregulatory role of TRAIL signaling on NK cells for the granzyme B-dependent elimination of antiviral T cells.
Language
  • English
Open access status
hybrid
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Persistent URL
https://sonar.ch/global/documents/308
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