Ischemia and reperfusion-injured liver-derived exosomes elicit acute lung injury through miR-122-5p regulated alveolar macrophage polarization

Copyright © 2024. Published by Elsevier B.V..

Acute lung injury (ALI) is a common postoperative complication, particularly in pediatric patients after liver transplantation. Hepatic ischemia-reperfusion (HIR) increases the release of exosomes (IR-Exos) in peripheral circulation. However, the role of IR-Exos in the pathogenesis of ALI induced by HIR remains unclear. Here, we explored the role of exosomes derived from the HIR-injured liver in ALI development. Intravenous injection of IR-Exos caused lung inflammation in naive rats, whereas pretreatment with an inhibitor of exosomal secretion (GW4869) attenuated HIR-related lung injury. In vivo and in vitro results show that IR-Exos promoted proinflammatory responses and M1 macrophage polarization. Furthermore, miRNA profiling of serum identified miR-122-5p as the exosomal miRNA with the highest increase in young rats with HIR compared with controls. Additionally, IR-Exos transferred miR-122-5p to macrophages and promoted proinflammatory responses and M1 phenotype polarization by targeting suppressor of cytokine signaling protein 1(SOCS-1)/nuclear factor (NF)-κB. Importantly, the pathological role of exosomal miR-122-5p in initiating lung inflammation was reversed by inhibition of miR-122-5p. Clinically, high levels of miR-122-5p were found in serum and correlated to the severity of lung injury in pediatric living-donor liver transplant recipients with ALI. Taken together, our findings reveal that IR-Exos transfer liver-specific miR-122-5p to alveolar macrophages and elicit ALI by inducing M1 macrophage polarization via the SOCS-1/NF-κB signaling pathway.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:131

Enthalten in:

International immunopharmacology - 131(2024) vom: 20. Apr., Seite 111853

Sprache:

Englisch

Beteiligte Personen:

Lyu, Jingshu [VerfasserIn]
Sheng, Mingwei [VerfasserIn]
Cao, Yingli [VerfasserIn]
Jia, Lili [VerfasserIn]
Zhang, Chen [VerfasserIn]
Weng, Yiqi [VerfasserIn]
Yu, Wenli [VerfasserIn]

Links:

Volltext

Themen:

Acute lung injury
Exosomes
Inflammation
Ischemia–reperfusion injury
Journal Article
MIRN122 microRNA, human
MIRN122 microRNA, rat
Macrophage polarization
MicroRNA
MicroRNAs
NF-kappa B

Anmerkungen:

Date Completed 10.04.2024

Date Revised 10.04.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.intimp.2024.111853

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369926218