
Respiratory Research, Journal Year: 2025, Volume and Issue: 26(1)
Published: Jan. 22, 2025
Abstract Background Neutrophil extracellular trap (NET) formation has been implicated as a pathogenic mechanism in both rheumatoid arthritis (RA) and interstitial lung disease (ILD). However, the role of NETs RA-associated ILD (RA-ILD) mechanisms driving NET remain unclear. This study aimed to assess involvement RA-ILD elucidate underlying mechanisms. Methods Single-cell sequencing was used identify changes quantity function neutrophils tissue zymosan A (ZYM)-induced pneumonia model. Additionally, nuclear receptor 4A3 (NR4A3) interference performed HL-60 cells its impact on transformation MRC-5 into myofibroblasts. The clinical relevance plasma myeloperoxidase-DNA (MPO-DNA), citrullinated histone 3 (Cit-H3), cell-free DNA evaluated patients with different imaging types via commercial enzyme-linked immunosorbent assay (ELISA). Results In ZYM-treated SKG mouse model, which recapitulates key features RA-ILD, an increased population primarily responsible for formation. Mechanistically, we found that NR4A3 expression enhanced cells, turn promoted differentiation Clinically, MPO-DNA levels are elevated RA-nonspecific (RA-NSIP), whereas Cit-H3 RA-usual (RA-UIP) compared healthy subjects. ROC curve analysis further revealed combination MPO-DNA, factor (RF), anti-citrullinated protein (anti-CCP) Cit-H3, RF, anti-CCP were superior diagnostic panels NSIP UIP patients, respectively. Moreover, those from controls, RA-UIP RA-NSIP demonstrated significantly ability form induce Specifically, exhibited greater capacity myofibroblasts than did patients. Conclusions These findings suggest targeting may be novel therapeutic approach treating RA
Language: Английский