Abstract：
:Circulating tumor cells (CTCs) are important clinical indicators for prognosis and treatment efficacy. However, CTC investigation is hampered by their low number, making the establishment of permanent CTC lines very challenging. We derived and characterized nine CTC lines using blood samples from a patient with metastatic colorectal cancer collected before and after chemotherapy and targeted therapy, and during cancer progression. These cell lines displayed an intermediate epithelial/mesenchymal phenotype, stem-cell like characteristics, angiogenesis potential, an osteomimetic signature and the capacity to escape from the immune system. Moreover, they showed changes in mRNA and protein expression (e.g., DEFA6, ABCB1 and GAL), whereas analysis of chromosomal copy number aberrations revealed no significant variation over time. These data indicate that although CTC lines derived from sequential blood samples during therapy have common traits, treatment-resistant CTC clones with distinct phenotypic characteristics are selected over time.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Soler A,Cayrefourcq L,Mazard T,Babayan A,Lamy PJ,Assou S,Assenat E,Pantel K,Alix-Panabières Cdoi
10.1038/s41598-018-34365-zsubject
Has Abstractpub_date
2018-10-29 00:00:00pages
15931issue
1issn
2045-2322pii
10.1038/s41598-018-34365-zjournal_volume
8pub_type
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