What question did this study set out to answer?

To define how the NLRP3 inflammasome and IL-1β inflammatory signaling pathways regulate central nervous system immune control and pathology during West Nile virus infection.

November 29, 2012PLoS PathogensOpen Access

IL-1β Signaling Promotes CNS-Intrinsic Immune Control of West Nile Virus Infection

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Authors

HRHilario J. RamosWisconsin Division of Public Health MLMarion C. LanteriUniversity of California, San Francisco GBGabriele BlahnikTranslational Research Institute

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Implication

Preclinical study demonstrates that IL-1β signaling suppresses West Nile virus replication in murine neurons, highlighting an essential intrinsic immune pathway against viral encephalitis.

Key Points

To define how the NLRP3 inflammasome and IL-1β inflammatory signaling pathways regulate central nervous system immune control and pathology during West Nile virus infection.
Measured systemic IL-1β concentrations in human patients presenting with acute West Nile virus infection.
Infected wild-type mice and mutant mice lacking the IL-1 receptor or inflammasome components to evaluate survival, viral burden, and CD8+ T cell responses.
Cultured cortical neurons to test IL-1β secretion after West Nile virus infection and assess antiviral synergy with type I interferon.
Acute West Nile virus infection elicited elevated plasma IL-1β concentrations in human patients and induced rapid IL-1β production in infected mice.
Mice deficient in IL-1 receptor or inflammasome complex components exhibited increased mortality, elevated viral accumulation specifically within the central nervous system, and impaired CD8+ T cell immunity.
Infected cortical neurons directly produced IL-1β, which synergized with type I interferon to suppress viral replication inside neuronal cells.

Cite This Study

Ramos et al. (2012) studied this question.

synapsesocial.com/papers/6a7baa0b4fcef545fadf7d0a https://doi.org/10.1371/journal.ppat.1003039

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Implication

Preclinical study demonstrates that IL-1β signaling suppresses West Nile virus replication in murine neurons, highlighting an essential intrinsic immune pathway against viral encephalitis.

IL-1β Signaling Promotes CNS-Intrinsic Immune Control of West Nile Virus Infection

Discussion

Member takes

Implication

Key Points

Cite This Study

IL-1β Signaling Promotes CNS-Intrinsic Immune Control of West Nile Virus Infection

Discussion

Member takes

Implication

Key Points

Cite This Study

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