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  • Title: Increased IL-10/IL-17 ratio is aggravated along with the prognosis of patients with chronic lymphocytic leukemia.
    Author: Pang N, Zhang R, Li J, Zhang Z, Yuan H, Chen G, Zhao F, Wang L, Cao H, Qu J, Ding J.
    Journal: Int Immunopharmacol; 2016 Nov; 40():57-64. PubMed ID: 27584054.
    Abstract:
    OBJECTIVE: This study is to investigate the association between the Treg/Th17 cells and prognosis of chronic lymphocytic leukemia (CLL). METHODS: Totally 50 CLL patients and 20 Health controls were included in this study. Regulatory T (Treg) cells and the cell subset secreting IL-17 (Th17) in peripheral blood were detected with flow cytometry. Serum levels of IL-10 and IL-17 were determined with ELISA, and expression of Foxp3 and RORγt was assessed with quantitative real-time PCR. RESULTS: Treg and Th17 cell proportions in peripheral blood in the CLL patients were significantly higher than control. Serum levels of IL-10 and IL-17, and expression of Foxp3 and RORγt, were significantly increased in the CLL patients. Ratios of Treg/Th17 and IL-10/IL-17 were significantly elevated in the CLL patients. Compared with those before treatment, Treg/Th17 and IL-10/IL-17 ratios were declined in the CLL patients in remission. Compared with the non-remission group, Treg cells were significantly decreased, while Th17 cells were significantly increased, resulting in decreased Treg/Th17 ratio, in the remission group. Moreover, the serum IL-10 level was significantly decreased, while the serum IL-17 level was significantly increased, resulting in declined IL-10/IL-17 ratio, in the remission group. Correlation analysis showed that, Treg and Th17 cell counts were significantly associated with CD38 and ZAP-70 expression in the CLL patients. Moreover, the IL-10/IL-17 ratio was also significantly associated with CLL prognostic factors. CONCLUSION: Altered Treg/Th17 and IL-10/IL-17 ratios in CLL would be aggravated along with the disease progression, which might be used as indicators for the disease prognosis.
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