Identification of a population of blood circulating tumor cells from breast cancer patients that initiates metastasis in a xenograft assay

Irène Baccelli, Andreas Schneeweiss, Sabine Riethdorf, Albrecht Stenzinger, Anja Schillert, Vanessa Vogel, Corinna Klein, Massimo Saini, Tobias Bäuerle, Markus Wallwiener, Tim Holland-Letz, Thomas Höfner, Martin Sprick, Martina Scharpff, Frederik Marmé, Hans Peter Sinn, Klaus Pantel, Wilko Weichert, Andreas Trumpp

Research output: Contribution to journalArticlepeer-review

873 Scopus citations

Abstract

It has been hypothesized that carcinoma metastasis is initiated by a subpopulation of circulating tumor cells (CTCs) found in the blood of patients. However, although the presence of CTCs is an indicator of poor prognosis in several carcinoma entities, the existence and phenotype of metastasis-initiating cells (MICs) among CTCs has not been experimentally demonstrated. Here we developed a xenograft assay and used it to show that primary human luminal breast cancer CTCs contain MICs that give rise to bone, lung and liver metastases in mice. These MIC-containing CTC populations expressed EPCAM, CD44, CD47 and MET. In a small cohort of patients with metastases, the number of EPCAM+CD44+CD47+MET+CTCs, but not of bulk EPCAM+CTCs, correlated with lower overall survival and increased number of metastasic sites. These data describe functional circulating MICs and associated markers, which may aid the design of better tools to diagnose and treat metastatic breast cancer.

Original languageEnglish
Pages (from-to)539-544
Number of pages6
JournalNature Biotechnology
Volume31
Issue number6
DOIs
StatePublished - Jun 2013
Externally publishedYes

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