Relationship between TRX1 and JAB1 in acute myelogenous leukemia

Objective: To detect the expressions of thioredoxin (TRX1) and c-jun-activation-domain binding protein-1 (JAB1) in patients with acute myelogenous leukemia (AML) and healthy controls, and measure the TRX1 level in AML patients at different stages for evaluating its clinical significance. Methods: The expressions of TRX1 and JAB1 in leukemia samples were analyzed by RT-PCR and Western blot at mRNA and protein levels, respectively. The correlation between TRX1 and JAB1, and the relationship between the gene expression and peripheral blood leukocytes count were also analyzed. Furthermore, serum TRX1 was measured by ELISA. Results: TRX1 and JAB1 expressions at both mRNA and protein levels were obviously upregulated in leukemia patients (P<0.05). TRX1 was positively related to JAB1 in both newly diagnosed and recurrent AML patients. And high levels of TRX1 and JAB1 expressions were associated with white blood cell (WBC) counts in AML patients (P<0.05). Moreover, abundance of TRX1 in serum was significantly greater in AML patients, especially in the patients with recurrent AML, than in healthy donors (P<0.05). Conclusion: There is a positive correlation between the expressions of TRX1 and JAB1, which is closely related to the occurrence and progression of AML.