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Deprecated: Implicit conversion from float 249.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Int+J+Mol+Sci 2018 ; 19 (3): ä Nephropedia Template TP
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Characterization of Multiple Cytokine Combinations and TGF-? on Differentiation and Functions of Myeloid-Derived Suppressor Cells #MMPMID29543758
Lee CR; Lee W; Cho SK; Park SG
Int J Mol Sci 2018[Mar]; 19 (3): ä PMID29543758show ga
Myeloid-derived suppressor cells (MDSCs) regulate T cell immunity, and this population is a new therapeutic target for immune regulation. A previous study showed that transforming growth factor-? (TGF-?) is involved in controlling MDSC differentiation and immunoregulatory function in vivo. However, the direct effect of TGF-? on MDSCs with various cytokines has not previously been tested. Thus, we examined the effect of various cytokine combinations with TGF-? on MDSCs derived from bone marrow cells. The data show that different cytokine combinations affect the differentiation and immunosuppressive functions of MDSCs in different ways. In the presence of TGF-?, interleukin-6 (IL-6) was the most potent enhancer of MDSC function, whereas granulocyte colony-stimulating factors (G-CSF) was the most potent in the absence of TGF-?. In addition, IL-4 maintained MDSCs in an immature state with an increased expression of arginase 1 (Arg1). However, regardless of the cytokine combinations, TGF-? increased expansion of the monocytic MDSC (Mo-MDSC) population, expression of immunosuppressive molecules by MDSCs, and the ability of MDSCs to suppress CD4+ T cell proliferation. Thus, although different cytokine combinations affected the MDSCs in different ways, TGF-? directly affects monocytic-MDSCs (Mo-MDSCs) expansion and MDSCs functions.