title: Combined transcriptome and genome analysis of single micrometastatic cells.
abstract: In human cancer, early systemic spread of tumor cells is recognized as a leading cause of death. Adjuvant therapies are administered to patients after complete resectioning of their primary tumors to eradicate the few residual and latent metastatic cells. These therapeutic regimens, however, are currently designed without direct information about the presence or nature of the latent cells. To address this problem, we developed a PCR-based technique to analyze the transcriptome of individual tumor cells isolated from the bone marrow of cancer patients. From the same cells, genomic aberrations were identified by comparative genomic hybridization. The utility of this approach for understanding the biology of occult disseminated cells and for the identification of new therapeutic targets is demonstrated here by the detection of frequent extracellular matrix metalloproteinase inducer (EMMPRIN; CD147) expression which was verified by immunostaining.
authors.affiliation: Institut für Immunologie, Ludwig-Maximilians-Universität München, D-80336 Munich, Germany. christoph.klein@ifi.med.uni-muenchen.de
authors.forename: Christoph A
authors.initials: CA
authors.lastname: Klein
authors.forename: Stefan
authors.initials: S
authors.lastname: Seidl
authors.forename: Karina
authors.initials: K
authors.lastname: Petat-Dutter
authors.forename: Sonja
authors.initials: S
authors.lastname: Offner
authors.forename: Jochen B
authors.initials: JB
authors.lastname: Geigl
authors.forename: Oleg
authors.initials: O
authors.lastname: Schmidt-Kittler
authors.forename: Nicole
authors.initials: N
authors.lastname: Wendler
authors.forename: Bernward
authors.initials: B
authors.lastname: Passlick
authors.forename: Rudolf M
authors.initials: RM
authors.lastname: Huber
authors.forename: Günter
authors.initials: G
authors.lastname: Schlimok
authors.forename: Patrick A
authors.initials: PA
authors.lastname: Baeuerle
authors.forename: Gert
authors.initials: G
authors.lastname: Riethmüller
mesh_terms: D002453:Cell Cycle / Q000235:genetics; D020869:Gene Expression Profiling / Q000379:methods*; D015894:Genome, Human; D023281:Genomics / Q000379:methods*; D006801:Humans; D009362:Neoplasm Metastasis / Q000235:genetics* / Q000473:pathology; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods*; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D012334:RNA, Neoplasm / Q000235:genetics / Q000378:metabolism; D014158:Transcription, Genetic / Q000235:genetics*; D014407:Tumor Cells, Cultured
chemical_list: D012333:RNA, Messenger; D012334:RNA, Neoplasm