کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2827361 1162438 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cell-specific regulation of Ferroportin transcription following experimentally-induced acute anemia in mice
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شناسی مولکولی
پیش نمایش صفحه اول مقاله
Cell-specific regulation of Ferroportin transcription following experimentally-induced acute anemia in mice
چکیده انگلیسی

Ferroportin (FPN), the sole characterized iron exporter, is mainly controlled by the peptide hormone hepcidin in response to iron, erythroid factors, hypoxia, and inflammation. In addition, intracellular iron level controls FPN translation by modulating the binding of Iron Responsive Proteins at the 5′UTR of FPN mRNA. Recently, hypoxia inducible factor (HIF)2α has been shown to regulate FPN expression in intestinal cells.Here we show that, during experimentally-induced acute anemia in mice, FPN is regulated at transcriptional level in a cell-specific manner. FPN mRNA level increases in duodenum and spleen macrophages, whereas it does not change in liver and is strongly down-regulated in erythroid precursors. These results were confirmed in Caco2, Raw264.7 and K562 cells treated with a hypoxic stimulus. Moreover, we found a differential expression of HIF1α and HIF2α in cells and tissues that might account for the specificity of FPN regulation.Thus, hypoxia, by directly controlling hepcidin and its target FPN, orchestrates a complex regulatory network aimed at ensuring rapid iron recovery from the periphery and efficient iron utilization in the erythroid compartment.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Blood Cells, Molecules, and Diseases - Volume 50, Issue 1, January 2013, Pages 25–30
نویسندگان
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