title: Distinct metabolic differences between various human cancer and primary cells.
abstract: Recent years have seen resurging interest in cancer cell metabolism and the role of secreted cancer metabolites in modulating the tumor stroma. Using a combination of nontargeted and targeted LC and GC-MS methods, the exometabolomes of three leukemia, two melanoma, three renal cell carcinoma, two colorectal adenocarcinoma, four hepatocellular carcinoma, three breast cancer, two bladder carcinoma, and one glioblastoma cell line, as well as five primary cultures of human melanocytes, hepatocytes, monocytes, CD4 and CD8 lymphocytes, that had been all cultivated under identical conditions, were investigated. Unsupervised affinity propagation clustering of the metabolic footprints yielded five distinct clusters that grouped the investigated cell cultures mainly according to the tissue of origin. A common expected feature of all neoplastic cells was high lactate production. Extracellular arginine and nicotinamide were major discriminants between normal and neoplastic hepatocytes. Further, significant differences in the assimilation of di- and tripeptides were observed. This finding appears to underscore the importance of peptides for meeting the increased bioenergetic and biosynthetic demands of many cancers.
authors.affiliation: Institute of Functional Genomics, University of Regensburg, Regensburg, Germany.
authors.forename: Katja
authors.initials: K
authors.lastname: Dettmer
authors.forename: Franziska C
authors.initials: FC
authors.lastname: Vogl
authors.forename: Axel P
authors.initials: AP
authors.lastname: Ritter
authors.forename: Wentao
authors.initials: W
authors.lastname: Zhu
authors.forename: Nadine
authors.initials: N
authors.lastname: Nürnberger
authors.forename: Marina
authors.initials: M
authors.lastname: Kreutz
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Oefner
authors.forename: Wolfram
authors.initials: W
authors.lastname: Gronwald
authors.forename: Eva
authors.initials: E
authors.lastname: Gottfried
mesh_terms: D045744:Cell Line, Tumor; D002853:Chromatography, Liquid / Q000379:methods; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006801:Humans; D013058:Mass Spectrometry / Q000379:methods; D055442:Metabolome; D055432:Metabolomics / Q000379:methods*; D009369:Neoplasms / Q000378:metabolism*; D014407:Tumor Cells, Cultured
keywords: Mass spectrometry; Metabolomics; Primary cells; Tumor cells