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Endothelial progenitor cells are associated with response to chemotherapy in human non-small-cell lung cancer
Purpose Bone marrow-derived endothelial progenitor cells (EPCs) play an important role in angiogenesis and tumor growth. However, the clinical relevance of EPCs in non-small-cell lung cancer (NSCLC) remains unclear. Recently, some reports suggested that EPCs correlate with clinical behavior of cance...
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Published in: | Journal of cancer research and clinical oncology 2011-12, Vol.137 (12), p.1849-1857 |
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Main Authors: | , , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Purpose
Bone marrow-derived endothelial progenitor cells (EPCs) play an important role in angiogenesis and tumor growth. However, the clinical relevance of EPCs in non-small-cell lung cancer (NSCLC) remains unclear. Recently, some reports suggested that EPCs correlate with clinical behavior of cancer patients. We assessed the hypothesis that EPCs correlate with efficient of therapy, prognosis, and clinicopathological factors, and EPCs may offer a possible biomarker for treatment outcome in NSCLC.
Methods
EPCs labeled with CD34, CD133, and vascular endothelial growth factor receptor-2 (VEGFR-2) antibodies were counted by flow cytometry in the peripheral blood of 31 NSCLC patients. We categorized two groups of NSCLC patients according to circulating EPC numbers. We examined age, pathological stage, histological type, Fluoro-
d
-glucose Positron emission tomography (FDG-PET
)
, response to therapy, progression-free survival, and tumor size of NSCLC patients and investigated whether these factors correlate with EPC counts.
Results
Circulating EPC numbers before antitumor therapy were increased in NSCLC patients compared with healthy controls (
P
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ISSN: | 0171-5216 1432-1335 |
DOI: | 10.1007/s00432-011-1043-8 |