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[mRNA Expressions of T-bet, GATA-3, ROR γt and Foxp3 in peripheral blood of patients with chronic lymphocytic leukemia in different stages].

OBJECTIVE
This study was to investigate the mRNA expression of T-bet, GATA-3, ROR γt and Foxp3 mRNA in peripheral blood of patients with chronic lymphocytic leukemia (CLL) in different stages and explore their potential role in the pathogenesis and clinical diagnosis.


METHODS
A total of 46 newly diagnosed and untreated patients with CLL was chosen as patient group, including 16 patients in the stage of Binet A, 15 in the stage of Binet B, and 15 in the stage of Binet C; 20 healthy persons were selected as controls. The quantitative fluorescence PCR was adopted to detect the mRNA expression of T-bet, GATA-3, RORγt and Foxp3 in peripheral blood mononuclear cell (PBMNC).


RESULTS
(1) The expression of T-bet mRNA in patient group was lower than that in normal controls (P < 0.05), while the mRNA expression of GATA-3 mRNA, ROR γt, Foxp3 in CLL patients group were higher than that in normal controls (P < 0.05), and the ratio of T-bet/GATA-3 and RORγt/Foxp3 in CLL in patient group were lower than that in normal controls(P < 0.05); (2) The later the stage, the higher the mRNA expression of GATA-3 and Foxp3. The mRNA expression of GATA-3 in stage Binet B and stage Binet C of CLL patients were higher than that in stage Binet A (P < 0.05),and the mRNA expression of Foxp3 in stage Binet C was higher than that in stage of Binet A and Binet B (P < 0.05); the later the stage, the lower the ratio of T-bet/GATA-3 and RORγt/Foxp3. The ratio of T-bet/GATA-3 in stage of Binet A CLL patients was higher than that in stage Binet C (P < 0.05) and the ratio of RORγt/Foxp3 in stage of Binet A and stage of Binet B were higher than that in stage Binet C (P < 0.05).


CONCLUSION
This study found in the level of transcription factors in CLL patients that with the process of disease, the balance shifts from Th1/Th2 and Th17/Treg to Th17 and Treg, and Treg cell may play a critical immunosuppressive role in the development of CLL.