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Anal Bioanal Chem

Title:		Discrimination of cancerous and non-cancerous cell lines by headspace-analysis with PTR-MS
Author(s):		Brunner C; Szymczak W; Hollriegl V; Mortl S; Oelmez H; Bergner A; Huber RM; Hoeschen C; Oeh U;
Address:		"Institute of Radiology, Hospital rechts der Isar of the Technical University of Munich, 81675 Munich, Germany. claudia.brunner@helmholtz-muenchen.de"
Journal Title:		Anal Bioanal Chem
Year:		2010
Volume:		20100526
Issue:		6
Page Number:		2315 - 2324
DOI:		10.1007/s00216-010-3838-x
ISSN/ISBN:		1618-2650 (Electronic) 1618-2642 (Linking)
Abstract:		"Proton transfer reaction mass spectrometry (PTR-MS) has been used to analyze the volatile organic compounds (VOCs) emitted by in-vitro cultured human cells. For this purpose, two pairs of cancerous and non-cancerous human cell lines were selected:1. lung epithelium cells A-549 and retinal pigment epithelium cells hTERT-RPE1, cultured in different growth media; and 2. squamous lung carcinoma cells EPLC and immortalized human bronchial epithelial cells BEAS2B, cultured in identical growth medium. The VOCs in the headspace of the cell cultures were sampled: 1. online by drawing off the gas directly from the culture flask; and 2. by accumulation of the VOCs in PTFE bags connected to the flask for at least 12 h. The pure media were analyzed in the same way as the corresponding cells in order to provide a reference. Direct comparison of headspace VOCs from flasks with cells plus medium and from flasks with pure medium enabled the characterization of cell-line-specific production or consumption of VOCs. Among all identified VOCs in this respect, the most outstanding compound was m/z = 45 (acetaldehyde) revealing significant consumption by the cancerous cell lines but not by the non-cancerous cells. By applying multivariate statistical analysis using 42 selected marker VOCs, it was possible to clearly separate the cancerous and non-cancerous cell lines from each other"
Keywords:		"Acetaldehyde/metabolism Biomarkers, Tumor/analysis Cell Line Cell Line, Tumor Humans Multivariate Analysis Neoplasms/chemistry/*diagnosis/metabolism Protons Volatile Organic Compounds/*analysis;"
Notes:		"MedlineBrunner, C Szymczak, W Hollriegl, V Mortl, S Oelmez, H Bergner, A Huber, R M Hoeschen, C Oeh, U eng Germany 2010/05/27 Anal Bioanal Chem. 2010 Jul; 397(6):2315-24. doi: 10.1007/s00216-010-3838-x. Epub 2010 May 26"