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Updated: May 27, 2025
Mouse Fetal Liver Culture System to Dissect Target Gene Functions at the Early and Late Stages of Terminal Erythropoiesis
Published on: September 9, 2014
Effect of a high-fat diet and iron overload on erythropoiesis in mice
Joe Varghese1, Jithu James Varghese1, Molly Jacob1
1Department of Biochemistry, Christian Medical College, Vellore, Tamil Nadu, India.
Background:
Insulin and iron availability stimulate and regulate erythropoiesis, respectively. The effects of hyperinsulinemia and/or iron overload on erythroid differentiation are unclear.
Methodology:
Male C57Bl/6J wild-type (WT) mice were fed a high-fat diet (HFD) (to produce hyperinsulinemia) or a control diet (CD) for varying periods (4-24 weeks). Hepcidin knock-out (Hamp1 ) mice (which are iron-overloaded) were fed CD or HFD for 24 weeks. Terminal erythroid differentiation (TED) in the bone marrow (BM) from these mice was analyzed by flow cytometry. Hematological parameters were estimated in peripheral blood.
Results:
HFD-feeding of WT mice did not significantly affect erythroid precursors in the BM or hematological parameters. However, these mice had a significantly higher reticulocyte population in the BM than those fed CD (at all time points studied). Values of hematological parameters were higher in Hamp1 mice than WT mice, at 24 weeks of feeding (irrespective of diet type), indicating increased erythropoiesis. Early erythroid precursors in the BM were higher in HFD-fed Hamp1 mice than those fed CD.
Conclusions:
HFD-feeding in WT mice resulted in increases in the proportion of reticulocytes in the bone marrow; maturation of the early erythroid precursors was not significantly affected. In Hamp1 mice, HFD-feeding increased the number of early erythroid precursors.
