Klin Onkol 2006; 19(Suppl2): 415-418.
Summary
Background: Expression microarrays provide a powerful technology for studying disease processes on a genomic scale. We used plastic microarrays for identification of differentially expressed genes in chronic myeloid leukemia patients. Plastic arrays combine the best properties of glass and nylon arrays.
Patients and Methods: Leukocytes were isolated from peripheral blood of 6 CML patients at diagnosis. All patients were BCR/ABL fusion gene positive. For gene expression profiling we used Atlas Human Plastic 8K Microarrays (Clontech) with 8 327 gene probes. mRNA was isolated
from 45µg of total RNA using magnetic bead method.
Results: Majority of the patient genes showed the same transcription activity as in the control sample. In a few genes it was possible to observe similar significant changes of gene expression in all (most) patients e.g.up-regulation: lactotransferrin, proteoglycan 2, elastase 2, MMP9, defensin alpha 1,3,4, peptidoglycan recognition protein, cathepsin G, myeloperoxidase, proteinase 3; down-regulation: CD68 antigen, cathepsin B, H factor, integrin-alpha X, interleukin 8, preB cell colony enhancing factor.
Conclusions: Although the study revealed variability of gene expression in many genes, we identified a number of genes with the similar expression regulation. The genes may be associated with the disease process and will be analysed in detail.
