IFN-γ Is Protective in Cytokine Release Syndrome-associated Extrapulmonary Acute Lung Injury

The mechanisms by which excessive systemic activation of adaptive T lymphocytes, as in cytokine release syndrome (CRS), leads to innate immune cell-mediated acute lung injury (ALI) or acute respiratory distress syndrome, often in the absence of any infection, remains unknown. Here, we investigated the roles of IFN-γ and IL-17A, key T-cell cytokines significantly elevated in patients with CRS, in the immunopathogenesis of CRS-induced extrapulmonary ALI. CRS was induced in wild-type (WT), IL-17A- and IFN-γ knockout (KO) human leukocyte antigen-DR3 transgenic mice with 10 μg of the superantigen, staphylococcal enterotoxin B, given intraperitoneally. Several ALI parameters, including gene expression profiling in the lungs, were studied 4, 24, or 48 hours later. Systemic T-cell activation with staphylococcal enterotoxin B resulted in robust upregulation of several chemokines, S100A8/A9, matrix metalloproteases, and other molecules implicated in tissue damage, granulocyte as well as agranulocyte adhesion, and diapedesis in the lungs as early as 4 hours, which was accompanied by subsequent neutrophil/eosinophil lung infiltration and severe ALI in IFN-γ KO mice. These pathways were significantly underexpressed in IL-17A KO mice, which manifested mildest ALI and intermediate in WT mice. Neutralization of IFN-γ worsened ALI in WT and IL-17A KO mice, whereas neutralizing IL-17A did not mitigate lung injury in IFN-γ KO mice, suggesting a dominant protective role for IFN-γ in ALI and that IL-17A is dispensable. Ruxolitinib, a Janus kinase inhibitor, increased ALI severity in WT mice. Thus, our study identified novel mechanisms of ALI in CRS and its differential modulation by IFN-γ and IL-17A.

Errataetall:

CommentIn: Am J Respir Cell Mol Biol. 2023 Jan;68(1):7-8. - PMID 36260489

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:68

Enthalten in:

American journal of respiratory cell and molecular biology - 68(2023), 1 vom: 21. Jan., Seite 75-89

Sprache:

Englisch

Beteiligte Personen:

Sun, Ying [VerfasserIn]
Hu, Buqu [VerfasserIn]
Stanley, Gail [VerfasserIn]
Harris, Zachary M [VerfasserIn]
Gautam, Samir [VerfasserIn]
Homer, Robert [VerfasserIn]
Koff, Jonathan L [VerfasserIn]
Rajagopalan, Govindarajan [VerfasserIn]

Links:

Volltext

Themen:

82115-62-6
Acute lung injury
Acute respiratory distress syndrome
Cytokine release syndrome
Cytokines
IFN-γ
IL-17A
Interferon-gamma
Interleukin-17
Journal Article
Research Support, N.I.H., Extramural

Anmerkungen:

Date Completed 03.01.2023

Date Revised 21.09.2023

published: Print

CommentIn: Am J Respir Cell Mol Biol. 2023 Jan;68(1):7-8. - PMID 36260489

Citation Status MEDLINE

doi:

10.1165/rcmb.2022-0117OC

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM346418313