Nutrient isothiocyanates covalently modify and inhibit the inflammatory cytokine macrophage migration inhibitory factor (MIF)

被引:62
作者
Cross, Janet V. [1 ]
Rady, Joshua M. [1 ]
Foss, Frank W., Jr. [2 ]
Lyons, Charles E. [1 ]
MacDonald, Timothy L. [2 ]
Templeton, Dennis J. [1 ]
机构
[1] Univ Virginia, Dept Pathol, Charlottesville, VA 22908 USA
[2] Univ Virginia, Dept Chem, Charlottesville, VA 22908 USA
基金
美国国家卫生研究院;
关键词
cancer; cytokine; inflammation; isothiocyanate (ITC); macrophage migration inhibitory factor (MIF); tautomerase; CELL LUNG-CANCER; TUMOR-GROWTH; IN-VIVO; EXPRESSION; VITRO; MICE; HYPERSENSITIVITY; SITE;
D O I
10.1042/BJ20091170
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
070307 [化学生物学]; 071010 [生物化学与分子生物学];
摘要
Dietary ITCs (isothiocyanates) prevent cancer and show other bioactivities in vivo. As electrophiles, ITCs may covalently modify cellular proteins. Using a novel proteomics screen, we identified MIF (macrophage migration inhibitory factor) as the principal target of nutrient ITCs in intact cells. ITCs covalently modify the N-terminal proline residue of MIF and extinguish its catalytic tautomerase activity. MIF deficiency does not prevent induction of Phase 2 gene expression, a hallmark of many cancer chemopreventives, including ITCs. Due to the emerging role of MIF in the control of malignant cell growth and its clear involvement in inflammation, inhibition of MIF by nutrient ITCs suggests therapeutic strategies for inflammatory diseases and cancer.
引用
收藏
页码:315 / 321
页数:7
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