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TGF-β1 is a multifunctional cytokine that mediates diverse biological processes. However, the mechanisms by which the intracellular signals of TGF-β1 are terminated are not well understood. Here, we demonstrate that DRAK2 serves as a TGF-β1-inducible antagonist of TGF-β signaling. TGF-β1 stimulation rapidly induces DRAK2 expression and enhances endogenous interaction of the type I TGF-β receptor with...
In the present study, we investigated the effect of CdCl 2 on the inflammatory cytokines in human intestinal Caco-2 cells. The secretion of IL-8 from Caco-2 cells was significantly increased in a dose- and time-dependent manner, whereas the secretion of such other inflammatory cytokines as TNF-α and IFN-γ was not changed. And IL-8 mRNA level was significantly increased by exposing the cells...
Intestinal inflammation is an indispensable protective response of the gut immune system to aggressive injury from pathogens and/or chemicals. Although the major route of exposure to cadmium for most people is via food, causing the gastrointestinal tract to become the first target organ, very little information is available on whether cadmium exposure triggers the intestinal inflammatory response...
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