TY - JOUR T1 - MicroRNA-150 Is up-regulated in Extranodal Marginal Zone Lymphoma of MALT Type JF - Cancer Genomics - Proteomics JO - Cancer Genomics Proteomics SP - 51 LP - 56 VL - 11 IS - 1 AU - NIKLAS GEBAUER AU - JOHANNES KUBA AU - ANDREA SENFT AU - ARNE SCHILLERT AU - VERONICA BERNARD AU - CHRISTOPH THORNS Y1 - 2014/01/01 UR - http://cgp.iiarjournals.org/content/11/1/51.abstract N2 - Background: The mechanisms promoting malignant transformation from chronic Helicobacter pylori-gastritis to gastric extranodal marginal zone lymphoma (MALT lymphoma) are insufficiently characterized. This follow-up study aimed to validate candidate microRNAs (miRs) in the process of neoplastic transformation. Materials and Methods: MicroRNA expression signatures (n=20) were generated for a total of 60 cases of gastric lesions ranging from Wotherspoon 0-5 employing a quantitative real-time polymerase chain reaction (PCR) approach. Morphological and immunohistochemical characterization of the cohort was supplemented by PCR-based immunoglobulin heavy chain recombination studies. Results: Quantitative expression of miR-150, miR-142.3p, miR-375 and miR-494 was significantly de-regulated in samples from MALT lymphoma compared to those from gastritis. Conclusion: The previously reported up-regulation of miR-150 in marginal zone lymphoma of MALT type was verified in an independent cohort of lymphoma samples employing a modified methodology. This further substantiates the role of miR-150 as a potential oncomiR in MALT lymphoma. ER -