Abstract:
:Frequently, the number of circulating tumor cells (CTC) isolated in 7.5 mL of blood is too small to reliably determine tumor heterogeneity and to be representative as a "liquid biopsy". In the EU FP7 program CTCTrap, we aimed to validate and optimize the recently introduced Diagnostic LeukApheresis (DLA) to screen liters of blood. Here we present the results obtained from 34 metastatic cancer patients subjected to DLA in the participating institutions. About 7.5 mL blood processed with CellSearch® was used as "gold standard" reference. DLAs were obtained from 22 metastatic prostate and 12 metastatic breast cancer patients at four different institutions without any noticeable side effects. DLA samples were prepared and processed with different analysis techniques. Processing DLA using CellSearch resulted in a 0-32 fold increase in CTC yield compared to processing 7.5 mL blood. Filtration of DLA through 5 μm pores microsieves was accompanied by large CTC losses. Leukocyte depletion of 18 mL followed by CellSearch yielded an increase of the number of CTC but a relative decrease in yield (37%) versus CellSearch DLA. In four out of seven patients with 0 CTC detected in 7.5 mL of blood, CTC were detected in DLA (range 1-4 CTC). The CTC obtained through DLA enables molecular characterization of the tumor. CTC enrichment technologies however still need to be improved to isolate all the CTC present in the DLA.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Andree KC,Mentink A,Zeune LL,Terstappen LWMM,Stoecklein NH,Neves RP,Driemel C,Lampignano R,Yang L,Neubauer H,Fehm T,Fischer JC,Rossi E,Manicone M,Basso U,Marson P,Zamarchi R,Loriot Y,Lapierre V,Faugeroux V,Oulhendoi
10.1002/ijc.31752subject
Has Abstractpub_date
2018-11-15 00:00:00pages
2584-2591issue
10eissn
0020-7136issn
1097-0215journal_volume
143pub_type
杂志文章,多中心研究abstract::The application of glucocorticoids (GC3) in human leukemia is based on apoptosis induction but is often hampered by GC resistance. To delineate resistance mechanisms, we examined 5 GC-resistant leukemic cell lines, termed CEM-C7.R1-R5, isolated from the GC-sensitive human acute-T-cell-leukemic line, CCRF-CEM-C7, by se...
journal_title:International journal of cancer
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abstract::A new non peptidic farnesyltransferase inhibitor, RPR-115135, in combination with 5-FU was studied in 10 human colon cancer cell lines (HCT-116, RKO, DLD-1, Colo-320, LoVo, SW-620, HT-29, HCT-15, Colo-205 and KM-12) carrying several mutations but well characterized for p53 and Ras status. We found that there was a sli...
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journal_title:International journal of cancer
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更新日期:1997-05-02 00:00:00
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journal_title:International journal of cancer
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
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更新日期:2002-01-10 00:00:00
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journal_title:International journal of cancer
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更新日期:1992-07-09 00:00:00
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journal_title:International journal of cancer
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更新日期:1997-11-04 00:00:00
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