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PD-L1+ neutrophils induced NETs in malignant ascites is a potential biomarker in HCC
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PD-L1+ neutrophils induced NETs in malignant ascites is a potential biomarker in HCC
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Journal Article
PD-L1+ neutrophils induced NETs in malignant ascites is a potential biomarker in HCC
2024
Overview
BackgroundSince differentiating malignant ascites from benign ascites has always been a clinical difficult, recognition of novel biomarkers in malignant ascites of hepatocellular carcinoma (HCC) patients could be helpful for establishing a diagnosis for HCC patients with ascitic fluids.MethodsThirty-five HCC patients with malignant ascites and chronic liver diseases patients with benign ascites were enrolled. Serum and ascites specimens were collected to determine TAN subpopulations and NETs concentration. Then, the correlation between ascitic NETs levels and clinical features were analyzed, and ROC curves were generated to evaluate the diagnostic value of NETs. For in vitro study, fresh neutrophils were employed to explore the underlying mechanism of TAN polarization and NETs formation using RNAseq analysis.ResultsSignificantly increased pro-tumor PD-L1+ TANs and higher lactate levels were measured in HCC ascites. RNAseq data showed that lactate regulated genes expression involving PD-L1 expression and NETs formation, suggesting that ascitic lactate might be responsible for tumor progression in TME. Then, NETs-related markers including calprotectin, dsDNA, CitH3, MPO and MPO-DNA were found dramatically elevated in malignant ascites. Next, correlation analysis revealed that ascitic NETs levels positively correlated with LDH, a classic ascitic biochemical indicator. Furthermore, we identified the diagnostic values of NETs in discriminating malignant ascites from benign ascites.ConclusionsOur findings highlighted that elevated ascitic NETs served as a biomarker in HCC patients with malignant ascites, which provided useful insights for both clinical and basic research for malignant ascites diagnosis and management.
Publisher
Springer Nature B.V
Subject
