A sustained type I IFN-neutrophil-IL-18 axis drives pathology during mucosal viral infection

ABSTRACT Neutrophil responses against pathogens must be balanced between protection and immunopathology. Factors that determine these outcomes are not well-understood. In a mouse model of genital herpes simplex virus-2 (HSV-2) infection, which results in severe genital inflammation, antibody-mediated neutrophil depletion reduced disease. Comparative single cell RNA-sequencing analysis of vaginal cells against a model of genital HSV-1 infection, which results in mild inflammation, demonstrated sustained expression of interferon-stimulated genes (ISGs) only after HSV-2 infection primarily within the neutrophil population. Both therapeutic blockade of IFNα/βreceptor 1 (IFNAR1) and genetic deletion of IFNAR1 in neutrophils concomitantly decreased HSV-2 genital disease severity and vaginal IL-18 levels. Therapeutic neutralization of IL-18 also diminished genital inflammation, indicating an important role for this cytokine in promoting neutrophil-dependent immunopathology. Our study reveals that sustained type I IFN signaling is a driver of pathogenic neutrophil responses, and identifies IL-18 as a novel component of disease during genital HSV-2 infection..

Medienart:

Preprint

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

bioRxiv.org - (2023) vom: 16. Okt. Zur Gesamtaufnahme - year:2023

Sprache:

Englisch

Beteiligte Personen:

Lebratti, Tania J. [VerfasserIn]
Lim, Ying Shiang [VerfasserIn]
Cofie, Adjoa [VerfasserIn]
Andey, Prabhakar S. [VerfasserIn]
Jiang, Xiaoping [VerfasserIn]
Scott, Jason M. [VerfasserIn]
Fabbrizi, Maria Rita [VerfasserIn]
Ozanturk, Ayse N. [VerfasserIn]
Pham, Christine T.N. [VerfasserIn]
Clemens, Regina A. [VerfasserIn]
Artyomov, Maxim [VerfasserIn]
Dinauer, Mary C. [VerfasserIn]
Shin, Haina [VerfasserIn]

Links:

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Themen:

570
Biology

doi:

10.1101/2020.12.20.423690

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

XBI019590466