Detection and cultivation of circulating tumor cells in gastric cancer

Detection and cultivation of circulating tumor cells in gastric cancer

Circulating tumor cells (CTCs) are important targets for treatment and critical surrogate markers when evaluating cancer prognosis and therapeutic response. A sensitive methodology for detecting CTCs in gastric cancer (GC) patients is needed. In this study we demonstrate a device for enrichment and...

Full description

Saved in:
Bibliographic Details
Published in:Cytotechnology (Dordrecht) 2016-08, Vol.68 (4), p.1095-1102
Main Authors: Kolostova, Katarina, Matkowski, Rafal, Gürlich, Robert, Grabowski, Krzysztof, Soter, Katarzyna, Lischke, Robert, Schützner, Jan, Bobek, Vladimir
Format: Article
Language:eng
Subjects:
Biochemistry
Biomarkers
Biomedicine
Biotechnology
CD45 antigen
Cell culture
Chemistry
Chemistry and Materials Science
Cytokeratin
ErbB-2 protein
Gastric cancer
Gene expression
Medical prognosis
Membrane filters
Metastasis
Original Research
Patients
Peripheral blood
Prostate cancer
Stomach cancer
Surgery
Tumor cells
Tumors
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Circulating tumor cells (CTCs) are important targets for treatment and critical surrogate markers when evaluating cancer prognosis and therapeutic response. A sensitive methodology for detecting CTCs in gastric cancer (GC) patients is needed. In this study we demonstrate a device for enrichment and cultivation of CTCs. In total, 22 patients with GC, all candidates for surgery, were enrolled in the study. Peripheral blood samples were collected before surgery, and patients were re-evaluated within operation and divided into two groups: resectable and non-resectable GC. A new size-based separation test for enrichment and cultivation of CTCs was used (MetaCell ® ). In addition to cytomorphological analysis, gene expression of tumor associated genes (Cytokeratin-18, Cytokeratin-19, Cytokeratin-20, Cytokeratin-7, EPCAM, MUC1, HER2, EGFR) and of leukocyte markers (e.g. CD45, CD68) was tested in enriched CTC fractions. CTCs were detected in 59 % of the patients studied (n = 13/22). CTCs were detected in seven patients of the resection group (7/10, 70 %) and six of the non-resectable group (6/12, 50 %). Enrichment of the viable CTCs allowed subsequent successful cultivation in vitro. The cytomorphological characterization of the CTCs was a prerequisite of random gene expression testing in CTC-positive samples. In CTC-positive samples gene expression of cytokeratin 18 and 19 was elevated in comparison to the whole blood gene expression analysis. CTCs were found to be present in both resectable and non-resectable gastric cancer patients. The size-based separation platform for CTCs may be used for in vitro cultivation, as well as in subsequent molecular analysis if desired. The sensitivity of CTC-detection could be enhanced by the combination of cytomorphological and molecular analysis.
ISSN:0920-9069
1573-0778