The mRNA-binding protein which controls ferritin and transferrin receptor expression is conserved during evolution
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Cellular iron metabolism comprises pathways of iron-protein synthesis and degradation, iron uptake via transferrin receptor (TfR) or release to the extracellular space, as well as iron deposition into ferritin and remobilization from such stores. Different ...
Maintenance of cellular iron homeostasis demands the coordination of iron uptake, intracellular storage, and utilization. Recent investigations suggest that a single genetic regulatory system orchestrates the expression of proteins with central importance ...
Iron-responsive elements (IREs) are cis-acting mRNA stem-loop structures that specifically bind cytoplasmic iron regulatory proteins (IRPs). IRP-IRE interactions mediate the coordinate post-transcriptional regulation of key proteins in iron metabolism, suc ...
Biosynthesis of nitric oxide (NO) from L-arginine modulates activity of iron-dependent enzymes, including mitochondrial acontiase, an [Fe-S] protein. We examined the effect of NO on the activity of iron regulatory factor (IRF), a cytoplasmic protein which ...
IFN gamma inhibits the rise in transferrin receptor mRNA level which is normally observed when stationary WISH cells are stimulated to proliferate. This effect is not attributable to a change in the transcription rate of the transferrin receptor gene or in ...
The expression of several cell surface proteins including the transferrin receptor and 4F2 antigen is induced when quiescent cells are activated and proliferate. We have studied this induction in mouse spleen cells after stimulation with 4 beta-phorbol 12- ...
The control of cellular iron homeostasis involves the coordinate post-transcriptional regulation of ferritin mRNA translation and transferring receptor mRNA stability. These regulatory events are mediated by a soluble cytoplasmic protein, iron regulatory f ...
The intracellular iron level exerts a negative feedback on transferrin receptor (TfR) expression in cells requiring iron for their proliferation, in contrast to the positive feedback observed in monocytes-macrophages. It has been suggested recently that mo ...
1991
It has recently been proposed that cellular iron homeostasis in mammalian cells is regulated at the post-transcriptional level by the reciprocal control of transferrin receptor and ferritin mRNA expression via an iron-regulatory factor. This iron-regulator ...
1994
Interleukin-2 (IL-2) controls the proliferation of the murine T cell line B6.1 and induces transferrin receptor (TfR) mRNA steady-state levels 50-fold when added to arrested, IL-2-deprived cells. In addition, TfR mRNA is post-transcriptionally regulated by ...
