The availability of blood-based diagnostic testing using a non-invasive technique holds promise for real-time monitoring of disease progression and treatment selection. Circulating tumor cells (CTCs) have been used as a prognostic biomarker for the metastatic breast cancer (MBC). The molecular characterization of CTCs is fundamental to the phenotypic identification of malignant cells and description of the relevant genetic alterations that may change according to disease progression and therapy resistance. However, the molecular characterization of CTCs remains a challenge because of the rarity and heterogeneity of CTCs and technological difficulties in the enrichment, isolation and molecular characterization of CTCs. In this pilot study, we evaluated circulating tumor associated cells in one blood draw by size exclusion technology and cytological analysis. Among 30 prospectively enrolled MBC patients, CTCs, circulating tumor cell clusters (CTC clusters), CTCs of epithelial–mesenchymal transition (EMT) and cancer associated macrophage-like cells (CAMLs) were detected and analyzed. For molecular characterization of CTCs, size-exclusion method for CTC enrichment was tested in combination with DEPArray™ technology, which allows the recovery of single CTCs or pools of CTCs as a pure CTC sample for mutation analysis. Genomic mutations of TP53 and ESR1 were analyzed by targeted sequencing on isolated 7 CTCs from a patient with MBC. The results of genomic analysis showed heterozygous TP53 R248W mutation from one single CTC and pools of three CTCs, and homozygous TP53 R248W mutation from one single CTC and pools of two CTCs. Wild-type ESR1 was detected in the same isolated CTCs. The results of this study reveal that size-exclusion method can be used to enrich and identify circulating tumor associated cells, and enriched CTCs were characterized for genetic alterations in MBC patients, respectively.
from #AlexandrosSfakianakis via Alexandros G.Sfakianakis on Inoreader http://ift.tt/2deJKJU
via IFTTT
Εγγραφή σε:
Σχόλια ανάρτησης (Atom)
Δημοφιλείς αναρτήσεις
-
Background Hyperthyroidism is associated with increased thrombotic risk. As contact system activation through formation of neutrophil extrac...
-
UM-Chor1: establishment and characterization of the first validated clival chordoma cell line. J Neurosurg. 2017 Apr 21;:1-9 Authors:...
-
Publication date: Available online 10 May 2017 Source: Journal of Dairy Science Author(s): R.E. Vibart, M. Tavendale, D. Otter, B.H. Schw...
-
Competency-based psychiatric education for Indian medical undergraduates Vijayalakshmi Pernenkil Archives of Mental Health 2019 20(1):1-2 Be...
-
Related Articles Developmental control of macrophage function. Curr Opin Immunol. 2017 Dec 13;50:64-74 Authors: Bonnardel J, Guillia...
-
from #AlexandrosSfakianakis via Alexandros G.Sfakianakis on Inoreader http://ift.tt/2tcPIjn via IFTTT
-
Abstract: Epidermolytic ichthyosis (EI) is a rare disorder of cornification caused by mutations in KRT1 and KRT10, encoding two suprabasal e...
-
Bloomberg Celgene Settles Whistle-Blower Fraud Suit for $280 Million Bloomberg Even after the FDA approved Thalomid for multiple myelo...
-
Related Articles Chinese version of the Constant-Murley questionnaire for shoulder pain and disability: a reliability and validation ...
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου