Characteristics of circulating tumor cells in organ metastases, prognosis, and T lymphocyte mediated immune response.

Abstract:

:Circulating tumor cells (CTCs) possess profound influence on tumor metastases and disease progression. This study aimed to investigate the correlation of CTCs with clinical characteristics and T-cell immunity, and to explore whether CTCs and the subpopulations can serve as an independent prognostic factor in advanced non-small cell lung cancer (NSCLC). A prospective study was conducted in late stages of NSCLC patients. The levels of overall CTCs and the three subpopulation CTCs were enumerated using the CanPatrol™ CTC enrichment system. The information about the patients which included the clinical characteristics, survival status at the 200th day postdiagnosis, and the levels of T cells was collected. Mann-Whitney U test, Kruskal-Wallis H test, Cox regression, and Spearman's rank correlation coefficient were the statistical methods used in this study. We detected CTCs in 27 of the 31 eligible patients; the level of epithelial-mesenchymal circulating tumor cells (EMCTCs) was higher than that of epithelial circulating tumor cells and that of mesenchymal circulating tumor cells (MCTCs) in the majority of NSCLC patients. Organ metastases were positively associated with the levels of overall CTCs, EMCTCs, and MCTCs (P<0.05). EMCTCs and MCTCs were associated with worse clinical outcomes. Additionally, the levels of EMCTCs were negatively associated with the levels of CD3+ T cells (P=0.01) and CD8+ T cells (P=0.04). In conclusion, the levels of CTCs were positively associated with organ metastases, particularly bone metastases, but were negatively associated with T-cell levels. The levels of EMCTCs and MCTCs had negative prognostic value.

journal_name

Onco Targets Ther

journal_title

OncoTargets and therapy

authors

Sun WW,Xu ZH,Lian P,Gao BL,Hu JA

doi

10.2147/OTT.S130087

subject

Has Abstract

pub_date

2017-05-04 00:00:00

pages

2413-2424

issn

1178-6930

pii

ott-10-2413

journal_volume

10

pub_type

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