[Proportion and Clinical Significance of γδT17/Th17/Tc17 Cells in Peripheral Blood of Uygur Patients with Chronic Lymphoblastic Leukemia]

Objective: To explore the distribution of γδT17/Th17/Tc17 cells in the peripheral blood of Uygur patients with chronic lymphoblastic leukemia (CLL) and clinical significance.

Methods: ELISA method was used to detect the levels of IL-17, IL-23, IL-6, and IFN-γ in the peripheral blood serum of 53 newly diagnosed Uygur patients with CLL and 30 healthy controls. Flow cytometry was used to determine the proportion of γδT/γδT17/Th17/Tc17 cells in the peripheral blood of Uygur CLL patients and controls, and the changes of the abover indexes in CLL Binet staging were observed.

Results: Compared with the control group, the proportion of γδT cells, γδT17 cells, and Th17 cells in the peripheral blood of Uygur CLL patients increased significantly （P <0.05）. γδT17 cell proportion in total lymphocytes was significantly higher than Th17 and Tc17 cell proportions（P <0.05）, and proportions of γδT, γδT17 cells increased gradually as the disease progressed. The levels of cytokines IL-17, IL-23, and IL-6 in peripheral blood of Uygur patients with CLL were significantly higher than those in the control group（P <0.05）, while the level of cytokine IFN-γ was significantly lower（P <0.05）. The level of IL-17 in peripheral blood decreased gradually as the disease progressed（P <0.05）.

Conclusion: γδT and γδT17 are abnormally highly expressed in Uygur CLL , which are related to the stage of disease and participate in the occurrence and development of CLL.