Elevated circulating levels of tissue factor-positive microvesicles are associated with distant metastasis in lung cancer.

Abstract

PURPOSE:

Microvesicles (MV) in the blood stream are associated with distant metastasis in cancer. Platelet or endothelial cell-related MV actively participate in thrombogenesis, which is an important step in cancer metastasis. This study investigated the correlations between MV levels of platelet-poor plasma and distant metastasis in lung cancer.

METHODS:

Platelet-poor plasma from 44 treatment-naive lung cancer (23 with distant metastasis) and 19 normal subjects was used to determine the levels of glycoprotein Iβ (CD42) + platelet MV (PMV), P-selectin (CD62P) + PMV, VE-cadherin (CD144) + endothelial MV (EMV), tissue factor (CD142) + MV, thrombin-antithrombin complex and vascular endothelial growth factor (VEGF).

RESULTS:

The level of CD142 + MV was significant (odds ratio 5.86, 95 % confidence interval 1.31-38.3) in predicting distant metastasis in lung cancer, and a cutoff value of 2.668 (after logarithm transformation) in the ROC curve had a specificity of 90 % and a sensitivity of 59 %. The presence of distant metastasis showed a significant correlation between CD144 + EMV and VEGF, but not between CD144 + EMV and CD42 + PMV or CD62P + PMV in lung cancer subjects.

CONCLUSIONS:

The finding of CD142 + MV in platelet-poor plasma may be useful for suggesting distant metastasis in lung cancer. In addition to thrombogenesis, interaction between VE-cadherin and VEGF may be needed for successful metastasis in lung cancer.

• Authors: Jo-Chi Tseng, Liang-Che Chang, Boy-Yiing Jiang, Yu-Chih Liu, Hung-Jie Chen, Chih-Teng Yu, Chung-Ching Hua
• Journal: Journal of cancer research and clinical oncology (J Cancer Res Clin Oncol) Vol. 140 Issue 1 Pg. 61-7 (Jan 2014) ISSN: 1432-1335 [Electronic] Germany
• PMID: 24169761 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Thromboplastin

Topics

• Aged
• Case-Control Studies
• Cytoplasmic Vesicles (metabolism)
• Female
• Flow Cytometry
• Humans
• Lung Neoplasms (blood, pathology)
• Male
• Neoplasm Metastasis
• ROC Curve
• Thromboplastin (metabolism)