Thromb Haemost 2025; 125(10): 998-1009
DOI: 10.1055/a-2493-2499
Cellular Haemostasis and Platelets

Neutrophil Extracellular Traps, Platelets and Endothelial Cells Cooperatively Contribute to Hypercoagulability in Non-Small Cell Lung Cancer

Dongxia Tong
1   Department of Oncology, Qingdao Municipal Hospital, Qingdao University, Shandong Province, China
,
Yuan Gao
2   Department of Gynaecology, Qingdao Municipal Hospital, Qingdao University, Shandong Province, China
,
Weihua Sun
1   Department of Oncology, Qingdao Municipal Hospital, Qingdao University, Shandong Province, China
,
Jie Yang
1   Department of Oncology, Qingdao Municipal Hospital, Qingdao University, Shandong Province, China
,
Yang Liu
1   Department of Oncology, Qingdao Municipal Hospital, Qingdao University, Shandong Province, China
,
Jihe Li
3   Department of Cardiology, Qingdao Municipal Hospital, Qingdao University, Shandong Province, China
,
Yan Zhang
1   Department of Oncology, Qingdao Municipal Hospital, Qingdao University, Shandong Province, China
› Author Affiliations

Funding This work was supported by grants from the Medical and Health Research Program of Qingdao City (2021-WJZD025).


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Abstract

Background

Thromboembolism is the second leading cause of death among patients with non-small cell lung cancer (NSCLC), but the precise mechanisms of thrombogenesis in NSCLC remain largely unknown. Our objectives were to evaluate the definitive role of neutrophil extracellular traps (NETs) in the hypercoagulability in NSCLC and to explore its interactions with platelets and endothelial cells (ECs).

Methods

The levels of NET markers in samples from 100 NSCLC patients and 30 healthy controls were measured by ELISA. NET formation was detected using immunofluorescence. Procoagulant activity was assessed based on purified coagulation complex, thrombin, clotting time, and fibrin formation assays.

Results

The plasma levels of NETs were increased in a stage-dependent manner in NSCLC patients and were markedly higher than those in controls. Neutrophils from NSCLC patients were more prone to form NETs, resulting in shortened coagulation time, significantly increased thrombin–antithrombin complexes and fibrin compared to controls. Moreover, NETs generation was mediated by High Mobility Group Box 1 from activated platelets in NSCLC patients. Conversely, NETs from NSCLC patients also induce phosphatidylserine exposure on platelets, leading to markedly enhanced procoagulant activity (PCA). Furthermore, NETs can damage endothelial cells and convert them to a procoagulant phenotype. The administration of NETs inhibitors (DNase I/activated protein C) could markedly diminish the PCA of NETs, activated platelets, and ECs.

Conclusion

Our results suggest that NETs contribute to hypercoagulability and may represent a potential therapeutic target to prevent cancer-associated thrombosis in NSCLC patients.

Ethical Approval Statement

This study was approved by the Ethics Committee of Qingdao Municipal Hospital according to the Helsinki Declaration and written informed consent was obtained from all participants during enrollment.


Data Availability Statement

The data that support the findings of this study are available on request from the corresponding author, upon reasonable request.


Authors' Contribution

J.H.L. and Y.Z. are responsible for the study design and experiment adjustment. D.X.T. and W.H.S. performed the experiments involved, drafted the manuscript, and conducted statistical analysis. Y.G., J.Y., and Y.L. collected the blood sample and clinical information of patients. All the authors read and approved the final manuscript.


Supplementary Material



Publication History

Received: 06 February 2024

Accepted: 28 November 2024

Accepted Manuscript online:
29 November 2024

Article published online:
27 December 2024

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