Proteomic Comparison of Malignant Human Germ Cell Tumor Cell Lines.

Proteomic Comparison of Malignant Human Germ Cell Tumor Cell Lines. Dis Markers. 2019;2019:8298524 Authors: Bremmer F, Bohnenberger H, Küffer S, Oellerich T, Serve H, Urlaub H, Strauss A, Maatoug Y, Behnes CL, Oing C, Radzun HJ, Ströbel P, Balabanov S, Honecker F Abstract Malignant germ cell tumors (GCT) are the most common malignant tumors in young men between 18 and 40 years. The correct identification of histological subtypes, in difficult cases supported by immunohistochemistry, is essential for therapeutic management. Furthermore, biomarkers may help to understand pathophysiological processes in these tumor types. Two GCT cell lines, TCam-2 with seminoma-like characteristics, and NTERA-2, an embryonal carcinoma-like cell line, were compared by a quantitative proteomic approach using high-resolution mass spectrometry (MS) in combination with stable isotope labelling by amino acid in cell culture (SILAC). We were able to identify 4856 proteins and quantify the expression of 3936. 347 were significantly differentially expressed between the two cell lines. For further validation, CD81, CBX-3, PHF6, and ENSA were analyzed by western blot analysis. The results confirmed the MS results. Immunohistochemical analysis on 59 formalin-fixed and paraffin-embedded (FFPE) normal and GCT tissue samples (normal testis, GCNIS, seminomas, and embryonal carcinomas) of these proteins demonstrated the ability to distinguish different GCT subtypes, ...
Source: Disease Markers - Category: Laboratory Medicine Tags: Dis Markers Source Type: research