Abstract
Interferon gamma (IFN-γ) and interleukin 6 (IL-6) are including the most important cytokines which have been associated with the biological behavioral and immune responses in malignancies. Based on the critical roles which these two cytokines play against tumor cells, the present study was aimed to investigate the genes expression level of IL6 and IFN-γ in patients with Acute Lymphoblastic Leukemia and compare with normal controls. Fifty-two patients with ALL and 13 healthy volunteer were under studied. The peripheral blood mononuclear cells of all patients and normal controls were separated by ficoll. The expression of interferon gamma and interleukin 6 genes were determined by RQ-PCR. Finally all data were analyzes using T student, one way ANOVA and Mann-Whitney tests were use to analyze all samples data. Our finding showed that the level of IFN-γ gene expression was significant decreased in patients with All as compared with healthy controls (83 change fold, p < 0.0001). The level of IL-6 Gene expression was not changeable in B-ALL patients as compared with healthy control (p = 0.4), but in T-ALL patients, was significantly reduced (p < 0.01). The results of present study indicated that IFN-γ gene expression reduced in ALL patients. It provides a valuable insight that immune system may disrupted in patients with ALL, which cause tumor cells escape from immune surveillance.
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