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Cited by 187

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Listeria monocytogenes -Infected Human Peripheral Blood Mononuclear Cells Produce IL-1β, Depending on Listeriolysin O and NLRP3

Meixenberger, Karolin, Pache, Florence, Eitel, Julia, Schmeck, Bernd, Hippenstiel, Stefan, Slevogt, Hortense, N’Guessan, Philippe, Witzenrath, Martin, Netea, Mihai G, Chakraborty, Trinad, Suttorp, Norbert, Opitz, Bastian·2010·The Journal of Immunology

Abstract

Different NOD-like receptors, including NLRP1, NLRP3, and NLRC4, as well as the recently identified HIN-200 protein, AIM2, form multiprotein complexes called inflammasomes, which mediate caspase-1–dependent processing of pro-IL-1β. Listeria monocytogenes is an intracellular pathogen that is actively phagocytosed by monocytes/macrophages and subsequently escapes from the phagosome into the host cell cytosol, depending on its pore-forming toxin listeriolysin O (LLO). In this study, we demonstrate that human PBMCs produced mature IL-1β when infected with wild-type L. monocytogenes or when treated with purified LLO. L. monocytogenes mutants lacking LLO or expressing a noncytolytic LLO as well as the avirulent Listeria innocua induced strongly impaired IL-1β production. RNA interference and inhibitor experiments in human PBMCs as well as experiments in Nlrp3 and Rip2 knockout bone marrow-derived macrophages demonstrated that the Listeria-induced IL-1β release was dependent on ASC, caspase-1, and NLRP3, whereas NOD2, Rip2, NLRP1, NLRP6, NLRP12, NLRC4, and AIM2 appeared to be dispensable. We found that L. monocytogenes-induced IL-1β production was largely dependent on phagosomal acidification and cathepsin B release, whereas purified LLO activated an IL-1β production independently of these mechanisms. Our results indicate that L. monocytogenes-infected human PBMCs produced IL-1β, largely depending on an LLO-mediated phagosomal rupture and cathepsin B release, which is sensed by Nlrp3. In addition, an LLO-dependent but cathepsin B-independent NLRP3 activation might contribute to some extent to the IL-1β production in L. monocytogenes-infected cells.

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Metadata

Authors
Meixenberger, K., Pache, F., Eitel, J., Schmeck, B., Hippenstiel, S., Slevogt, H., N’Guessan, P., Witzenrath, M., Netea, M. G., Chakraborty, T., Suttorp, N., & Opitz, B.
Venue
The Journal of Immunology
Published
2009-12-27
Volume
184
Issue
2
Pages
922-930
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W2097825875
Cited by
187
References
14
FWCI
6.12
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Listeria monocytogenes -Infected Human Peripheral Blood Mononuclear Cells Produce IL-1β, Depending on Listeriolysin O and NLRP3. https://app.cochat.ai/papers/10.4049/jimmunol.0901346
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Meixenberger, K., Pache, F., Eitel, J., Schmeck, B., Hippenstiel, S., Slevogt, H., N’Guessan, P., Witzenrath, M., Netea, M. G., Chakraborty, T., Suttorp, N., & Opitz, B. (2010). Listeria monocytogenes -Infected Human Peripheral Blood Mononuclear Cells Produce IL-1β, Depending on Listeriolysin O and NLRP3. The Journal of Immunology. https://doi.org/10.4049/jimmunol.0901346

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