Different Influence of Macrophage Migration Inhibitory Factor (MIF) in Signal Transduction Pathway of Various T Cell Subsets

Immunobiology ◽  
2000 ◽  
Vol 201 (3-4) ◽  
pp. 356-367 ◽  
Author(s):  
Nobuyoshi Kitaichi ◽  
Kazumasa Ogasawara ◽  
Kazuya Iwabuchi ◽  
Jun Nishihira ◽  
Ken-Ichi Namba ◽  
...  
2000 ◽  
Vol 279 (3) ◽  
pp. R1043-R1049 ◽  
Author(s):  
Jane M. Daun ◽  
Joseph G. Cannon

Macrophage migration inhibitory factor (MIF) is an inflammatory cytokine secreted by several cell types, including mononuclear and pituitary cells. It has also been shown to counteract cortisol-induced inhibition of inflammatory cytokine secretion. The purpose of this study was to determine whether MIF antagonized the effect of hydrocortisone on the NF-κB/IκB signal transduction pathway in lipopolysaccharide (LPS)-stimulated human peripheral blood mononuclear cells. Physiological doses of hydrocortisone (50–200 ng/ml) diminished both the LPS-stimulated decrease in cytosolic IκBα levels and the subsequent increase in nuclear NF-κB DNA binding. In the presence of both LPS and hydrocortisone, 1 ng/ml of MIF antagonized the effects of hydrocortisone, resulting in decreased cytosolic IκBα levels ( P < 0.05) and increased nuclear NF-κB DNA binding ( P < 0.05). In the absence of hydrocortisone, MIF had no effect on LPS-induced decreases in IκBα. In the absence of LPS, MIF inhibited hydrocortisone-induced increases in IκBα ( P = 0.03). Thus the mechanism by which MIF antagonizes the effect of hydrocortisone on the NF-kB/IκB signal transduction pathway is through inhibiting the ability of hydrocortisone to increase cytosolic IκBα.


2012 ◽  
Vol 189 (8) ◽  
pp. 3905-3913 ◽  
Author(s):  
Susanna Choi ◽  
Hang-Rae Kim ◽  
Lin Leng ◽  
Insoo Kang ◽  
William L. Jorgensen ◽  
...  

2016 ◽  
Vol 10 (2) ◽  
pp. 165-170 ◽  
Author(s):  
Tejaswini Subbannayya ◽  
Prathyaksha Variar ◽  
Jayshree Advani ◽  
Bipin Nair ◽  
Subramanian Shankar ◽  
...  

Author(s):  
Tyler J. Alban ◽  
Defne Bayik ◽  
Balint Otvos ◽  
Anja Rabljenovic ◽  
Lin Leng ◽  
...  

AbstractThe application of tumor immunotherapy to glioblastoma (GBM) is limited by an unprecedented degree of immune suppression due to factors that include high numbers of immune suppressive myeloid cells, the blood brain barrier, and T cell sequestration to the bone marrow. We previously identified an increase in immune suppressive myeloid-derived suppressor cells (MDSCs) in GBM patients, which correlated with poor prognosis and was dependent on macrophage migration inhibitory factor (MIF). Here we examine the MIF signaling axis in detail in murine MDSC models, GBM-educated MDSCs and human GBM. We found that the monocytic subset of MDSCs (M-MDSCs), expressed high levels of the MIF cognate receptor CD74 and was localized in the tumor microenvironment. In contrast, granulocytic MDSCs (G-MDSCs) expressed high levels of the MIF non-cognate receptor CXCR2 and showed minimal accumulation in the tumor microenvironment. Furthermore, targeting M-MDSCs with ibudilast, a brain penetrant MIF-CD74 interaction inhibitor, reduced MDSC function and enhanced CD8 T cell activity in the tumor microenvironment. These findings demonstrate the MDSC subsets differentially express MIF receptors and may be leveraged for specific MDSC targeting.


2011 ◽  
Vol 186 (11) ◽  
pp. 6271-6279 ◽  
Author(s):  
Diane Tshikudi Malu ◽  
Benoit Bélanger ◽  
François Desautels ◽  
Karine Kelendji ◽  
Esther Dalko ◽  
...  

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