Title : Iron chelator induces THP-1 cell differentiation potentially by modulating intracellular glutathione levels.

Pub. Date : 2006 May 1

PMID : 16632111






9 Functional Relationships(s)
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Protein Name
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1 DFO rapidly phosphorylated both extracellular signal-regulated kinase (ERK) and p38 kinase. Deferoxamine mitogen-activated protein kinase 1 Homo sapiens
2 DFO rapidly phosphorylated both extracellular signal-regulated kinase (ERK) and p38 kinase. Deferoxamine mitogen-activated protein kinase 1 Homo sapiens
3 DFO rapidly phosphorylated both extracellular signal-regulated kinase (ERK) and p38 kinase. Deferoxamine mitogen-activated protein kinase 1 Homo sapiens
4 Blockade of ERK signaling by the MEK1/2 inhibitor PD098059 abolished DFO-induced class A scavenger receptor (SR-A) expression and phagocytic activity, indicating that ERK cascades mediate the induction of THP-1 differentiation. Deferoxamine mitogen-activated protein kinase 1 Homo sapiens
5 Blockade of ERK signaling by the MEK1/2 inhibitor PD098059 abolished DFO-induced class A scavenger receptor (SR-A) expression and phagocytic activity, indicating that ERK cascades mediate the induction of THP-1 differentiation. Deferoxamine mitogen-activated protein kinase 1 Homo sapiens
6 In contrast, in cells treated with the p38 inhibitor SB203580 or transfected with the dominant-negative variant of p38 kinase, DFO-mediated ERK activation became more prominent, and the induction of SR-A expression and phagocytic activity were significantly increased. Deferoxamine mitogen-activated protein kinase 1 Homo sapiens
7 In contrast, in cells treated with the p38 inhibitor SB203580 or transfected with the dominant-negative variant of p38 kinase, DFO-mediated ERK activation became more prominent, and the induction of SR-A expression and phagocytic activity were significantly increased. Deferoxamine mitogen-activated protein kinase 1 Homo sapiens
8 In contrast, in cells treated with the p38 inhibitor SB203580 or transfected with the dominant-negative variant of p38 kinase, DFO-mediated ERK activation became more prominent, and the induction of SR-A expression and phagocytic activity were significantly increased. Deferoxamine mitogen-activated protein kinase 1 Homo sapiens
9 Collectively, these results indicate that oxidative stress by DFO and the resulting activation of ERK cascade play dominant roles in the process of THP-1 differentiation, while p38 acts as a negative signal transmitter. Deferoxamine mitogen-activated protein kinase 1 Homo sapiens