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. 2014 Dec 20;588(24):4645-53.
doi: 10.1016/j.febslet.2014.10.036. Epub 2014 Nov 11.

C/EBPα controls mast cell function

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Free article

C/EBPα controls mast cell function

Kazumi Kasakura et al. FEBS Lett. .
Free article

Abstract

CCAAT/enhancer binding protein alpha (C/EBPα) is a transcription factor that influences immune cell fate and differentiation. However, the effect of C/EBPα on mast cells is not fully understood. In this study, we showed that C/EBPα suppressed granule formation in mast cells and increased macrophage inflammatory protein (MIP)-2 production from mast cells upon bacterial stimulation. These results indicate that C/EBPα regulates the balance between the allergic response and the innate immune response of mast cells. Furthermore, we showed that stimulation of mast cells with the Lactobacillus casei JCM1134(T) strain during late differentiation up-regulated C/EBPα expression in differentiated mast cells. This suggests that intestinal commensal bacteria modulate C/EBPα expression and thereby regulate mast cell function.

Keywords: Allergy; CCAAT/enhancer binding protein alpha; Commensal bacteria; Innate immunity; Mast cell; Terminal differentiation.

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