PT - JOURNAL ARTICLE AU - ANNE CASPAR AU - JÖRG MOSTERTZ AU - MERLE LEYMANN AU - PATRICK ZIEGLER AU - KATJA EVERT AU - MATTHIAS EVERT AU - UWE ZIMMERMANN AU - LARS-OVE BRANDENBURG AU - MARTIN BURCHARDT AU - MATTHIAS B. STOPE TI - <em>In Vitro</em> Cultivation of Primary Prostate Cancer Cells Alters the Molecular Biomarker Pattern DP - 2016 Sep 01 TA - In Vivo PG - 573--579 VI - 30 IP - 5 4099 - http://iv.iiarjournals.org/content/30/5/573.short 4100 - http://iv.iiarjournals.org/content/30/5/573.full SO - In Vivo2016 Sep 01; 30 AB - Background/Aim: The high variability of primary cells propagated in vitro led us to study the expression patterns of 11 most commonly accepted and widely used biomarkers specific for prostate cancer (PC) cells in primary cell models. Materials and Methods: Primary PC cells from five PC patients were partially subjected to RNA preparation immediately and remaining cells were propagated up to 84 days followed by RNA preparation. Subsequently, biomarker mRNA quantification was performed by quantitative reverse transcription-polymerase chain reaction (RT-PCR) and biomarker transcript concentrations before and after cultivation of primary PC cells were compared. Results: Evaluation of androgen receptor, prostate-specific antigen, acid phosphatase, prostate-specific membrane antigen, fatty acid synthase, cytokeratin types 5/8/19, E-cadherin, epithelial cell adhesion molecule and fibroblast-specific protein 1 demonstrated temporal changes, as well as individual differences in expression, during primary PC cell propagation. Conclusion: Experimental design, as well as data evaluation, may need to take under consideration the high variability of biomarker expression in primary PC cells.