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Trends Cancer. 2016 Apr;2(4):159-160. doi: 10.1016/j.trecan.2016.02.006. Epub 2016 Mar 19.

Metastasis: Circulating Tumor Cells in Small Cell Lung Cancer.

Author information

1
Department of Surgery, Medical University of Vienna, A-1090, Vienna, Austria. Electronic address: gerhard.hamilton@meduniwien.ac.at.
2
Department of Cranio-, Maxillofacial, and Oral Surgery, Medical University of Vienna, A-1090, Vienna, Austria.
3
Respiratory Oncology Unit, Otto-Wagner Hospital, A-1140, Vienna, Austria.

Abstract

Small cell lung cancer (SCLC) is distinguished by excessive numbers of circulating tumor cells (CTCs) in extended and recurring disease. This malignancy has a poor prognosis due to rapid emergence of chemoradioresistant relapses after first-line chemotherapy. In vitro expansion of several CTC lines allowed for a detailed study of the contribution of these cells to metastasis. Generation of CTCs involves the establishment of co-cultures and recruitment of macrophages and specific cytokines. All cell lines show E-cadherin-positive epithelial-like cells and spontaneous assembling into very large tumorospheres. Such multicellular aggregates seem to be responsible for the observed broad resistance due to limited access to drugs, quiescent cell layers, and hypoxic cores.

KEYWORDS:

CTC; EMT; SCLC; tumorosphere

PMID:
28741567
DOI:
10.1016/j.trecan.2016.02.006
[Indexed for MEDLINE]

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