Endothelial extracellular vesicles induce acute lung injury via follistatin-like protein 1

© 2023. Science China Press..

Cardiopulmonary bypass has been speculated to elicit systemic inflammation to initiate acute lung injury (ALI), including acute respiratory distress syndrome (ARDS), in patients after cardiac surgery. We previously found that post-operative patients showed an increase in endothelial cell-derived extracellular vesicles (eEVs) with components of coagulation and acute inflammatory responses. However, the mechanism underlying the onset of ALI owing to the release of eEVs after cardiopulmonary bypass, remains unclear. Plasma plasminogen-activated inhibitor-1 (PAI-1) and eEV levels were measured in patients with cardiopulmonary bypass. Endothelial cells and mice (C57BL/6, Toll-like receptor 4 knockout (TLR4-/-) and inducible nitric oxide synthase knockout (iNOS-/-)) were challenged with eEVs isolated from PAI-1-stimulated endothelial cells. Plasma PAI-1 and eEVs were remarkably enhanced after cardiopulmonary bypass. Plasma PAI-1 elevation was positively correlated with the increase in eEVs. The increase in plasma PAI-1 and eEV levels was associated with post-operative ARDS. The eEVs derived from PAI-1-stimulated endothelial cells could recognize TLR4 to stimulate a downstream signaling cascade identified as the Janus kinase 2/3 (JAK2/3)-signal transducer and activator of transcription 3 (STAT3)-interferon regulatory factor 1 (IRF-1) pathway, along with iNOS induction, and cytokine/chemokine production in vascular endothelial cells and C57BL/6 mice, ultimately contributing to ALI. ALI could be attenuated by JAK2/3 or STAT3 inhibitors (AG490 or S3I-201, respectively), and was relieved in TLR4-/- and iNOS-/- mice. eEVs activate the TLR4/JAK3/STAT3/IRF-1 signaling pathway to induce ALI/ARDS by delivering follistatin-like protein 1 (FSTL1), and FSTL1 knockdown in eEVs alleviates eEV-induced ALI/ARDS. Our data thus demonstrate that cardiopulmonary bypass may increase plasma PAI-1 levels to induce FSTL1-enriched eEVs, which target the TLR4-mediated JAK2/3/STAT3/IRF-1 signaling cascade and form a positive feedback loop, leading to ALI/ARDS after cardiac surgery. Our findings provide new insight into the molecular mechanisms and therapeutic targets for ALI/ARDS after cardiac surgery.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:67

Enthalten in:

Science China. Life sciences - 67(2024), 3 vom: 22. März, Seite 475-487

Sprache:

Englisch

Beteiligte Personen:

Yuan, Hao-Xiang [VerfasserIn]
Chen, Ya-Ting [VerfasserIn]
Li, Yu-Quan [VerfasserIn]
Wang, Yan-Sheng [VerfasserIn]
Ou, Zhi-Jun [VerfasserIn]
Li, Yan [VerfasserIn]
Gao, Jian-Jun [VerfasserIn]
Deng, Meng-Jie [VerfasserIn]
Song, Yuan-Kai [VerfasserIn]
Fu, Li [VerfasserIn]
Ci, Hong-Bo [VerfasserIn]
Chang, Feng-Jun [VerfasserIn]
Cao, Yang [VerfasserIn]
Jian, Yu-Peng [VerfasserIn]
Kang, Bi-Ang [VerfasserIn]
Mo, Zhi-Wei [VerfasserIn]
Ning, Da-Sheng [VerfasserIn]
Peng, Yue-Ming [VerfasserIn]
Liu, Ze-Long [VerfasserIn]
Liu, Xiao-Jun [VerfasserIn]
Xu, Ying-Qi [VerfasserIn]
Xu, Jun [VerfasserIn]
Ou, Jing-Song [VerfasserIn]

Links:

Volltext

Themen:

158709-61-6
Acute lung injury
Acute respiratory distress syndrome
Cardiopulmonary bypass
Cell-derived extracellular vesicles
FSTL1 protein, human
Follistatin-Related Proteins
Follistatin-like protein 1
Fstl1 protein, mouse
Journal Article
Lipopolysaccharides
Plasminogen Activator Inhibitor 1
Toll-Like Receptor 4

Anmerkungen:

Date Completed 05.03.2024

Date Revised 05.03.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1007/s11427-022-2328-x

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM357222024