Abstract
Background: The mechanisms promoting malignant transformation from chronic Helicobacter pylorigastritis 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.
| Original language | English |
|---|---|
| Journal | Cancer Genomics and Proteomics |
| Volume | 11 |
| Issue number | 1 |
| Pages (from-to) | 51-56 |
| Number of pages | 6 |
| ISSN | 1109-6535 |
| Publication status | Published - 2014 |
