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Catch and release: Rare cell analysis from a functionalised medical wire

 
: Chen, Shukun; El-Heliebi, Amin; Tauber, Gerlinde; Langsenlehner, Tanja; Pötscher, Michaela; Kashofer, Karl; Czyz, Zbigniew T.; Polzer, Bernhard; Riethdorf, Sabine; Kuske, Andra; Leitinger, Gerd; Pantel, Klaus; Kroneis, Thomas; Sedlmayr, Peter

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Fulltext urn:nbn:de:0011-n-4528330 (825 KByte PDF)
MD5 Fingerprint: 656adca89f79787bde952663eba77239
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Created on: 1.7.2017


Scientific Reports 7 (2017), Art. 43424, 8 pp.
ISSN: 2045-2322
English
Journal Article, Electronic Publication
Fraunhofer ITEM ()
cytological techniques; diagnostic markers; tumour biomarkers

Abstract
Enumeration and especially molecular characterization of circulating tumour cells (CTCs) holds great promise for cancer management. We tested a modified type of an in vivo enrichment device (Catch&Release) for its ability to bind and detach cancer cells for the purpose of single-cell molecular downstream analysis in vitro. The evaluation showed that single-cell analysis using array comparative genome hybridization (array-CGH) and next generation sequencing (NGS) is feasible. We found array-CGH to be less noisy when whole genome amplification (WGA) was performed with Ampli1 as compared to GenomePlex (DLRS values 0.65 vs. 1.39). Moreover, Ampli1-processed cells allowed detection of smaller aberrations (median 14.0 vs. 49.9 Mb). Single-cell NGS data obtained from Ampli1-processed samples showed the expected non-synonymous mutations (deletion/SNP) according to bulk DNA. We conclude that clinical application of this refined in vivo enrichment device allows CTC enumeration and characterization, thus, representing a promising tool for personalized medicine.

: http://publica.fraunhofer.de/documents/N-452833.html